CN102997535B - Refrigerator - Google Patents
Refrigerator Download PDFInfo
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- CN102997535B CN102997535B CN201210038762.1A CN201210038762A CN102997535B CN 102997535 B CN102997535 B CN 102997535B CN 201210038762 A CN201210038762 A CN 201210038762A CN 102997535 B CN102997535 B CN 102997535B
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- Prior art keywords
- mentioned
- cooler
- flow path
- refrigerant
- refrigerant flow
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
- F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention relates to a refrigerator, and aims at enabling the temperature of a cooler to rise uniformly by controlling refrigerant flowing into the cooler during defrosting, thereby obtaining the refrigerator with a high electricity saving performance. The refrigerator comprises: a compressor used for compressing the refrigerant; a condenser used for condensing the refrigerant compressed by the compressor; a decompressor used for performing decompression for the refrigerant condensed by the condenser; the cooler used for vaporing the refrigerant decompressed by the decompressor; a heating mechanism used for heating the cooler; and a refrigerant flow path adjusting mechanism used for blocking a refrigerant flow path. The refrigerator is characterized in that during defrosting operation of the cooler, the refrigerant flow path is blocked through the refrigerant flow path adjusting mechanism, so that the compressor stops, when the cooler is heated by the heating mechanism, after preset time or after the cooler reaches a preset temperature, the refrigerant flow path is opened.
Description
Technical field
The present invention relates to refrigerator.
Background technology
Japan Patent No. 4341215 publication (patent document 1) is had as the prior art controlling refrigerant flow path during defrosting.
In patent document 1, disclose following technology, possess: the compressor of compressed refrigerant; The condenser of the cold-producing medium that condensation is compressed by above-mentioned compressor; Possesses the full cut-off function of closing refrigerant flow path completely and to the decompressor reduced pressure by the cold-producing medium of above-mentioned condenser condenses; Make the cooler evaporated by the cold-producing medium that above-mentioned decompressor reduces pressure; Store the reservoir of the remaining liquid cold-producing medium flowed out from above-mentioned cooler; The suction line connecting above-mentioned reservoir successively and be connected with above-mentioned compressor and the freeze cycle formed; Melt the Defrost heater of the frost be attached on above-mentioned cooler; And stop the running of above-mentioned compressor and the controlling organization of the state when the defrosting running that above-mentioned cooler defrosts, above-mentioned decompressor cutting out above-mentioned Defrost heater energising completely and refrigerant flow path is closed, until stop from the energising of above-mentioned Defrost heater, close above-mentioned decompressor completely and flow out to above-mentioned suction line to prevent the liquid refrigerant flowed out from above-mentioned cooler from spilling in above-mentioned reservoir.
Prior art document
Patent document
Patent document 1: Japan Patent No. 4341215 publication
But, in the prior art of patent document 1, because when Defrost heater is energized, cold-producing medium does not flow into cooler, therefore cold-producing medium flow into the cooler caused temperature rise suppressed, defrosting time is elongated, consume more electric power.
In addition, when Defrost heater is arranged at that cooler bottom shown in patent document 1, owing to heating successively from cooler bottom with Defrost heater, cooler upper and lower produces temperature difference, can not effectively melt the frost be attached on cooler.
Summary of the invention
The present invention proposes in view of the problem of above-mentioned prior art, flows into the cold-producing medium of cooler, and makes the homogeneous temperature of cooler increase, thus obtain electricity saving performance high refrigerator when its objective is by controlling defrosting.
In order to solve the problem, have employed the such as structure described in technical scheme protection domain.The application comprises multiple mechanism solved the problem, as an example, there is the compressor of compressed refrigerant, the condenser of the cold-producing medium that condensation is compressed by above-mentioned compressor, to the decompressor reduced pressure by the cold-producing medium of above-mentioned condenser condenses, make by the cooler of the post-decompression cold-producing medium evaporation of above-mentioned decompressor, heat the heating arrangements of above-mentioned cooler, in the refrigerator of the refrigerant flow path guiding mechanism of blocking refrigerant flow path, it is characterized in that: when the defrosting running of above-mentioned cooler, above-mentioned refrigerant flow path guiding mechanism is utilized to interdict above-mentioned refrigerant flow path, above-mentioned compressor is stopped, when heating above-mentioned cooler with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, open wide above-mentioned refrigerant flow path.
Effect of the present invention is as follows.
According to the present invention, flowing into the cold-producing medium of cooler during by controlling defrosting, making the homogeneous temperature of cooler increase, thus the high refrigerator of electricity saving performance can be obtained.
Accompanying drawing explanation
Fig. 1 is the front appearance figure of the refrigerator of embodiments of the invention.
Fig. 2 is the longitudinal section of the case inner structure representing refrigerator.
Fig. 3 is the front view of the case inner structure representing refrigerator.
Fig. 4 is the fragmentary front view representing cooler peripheral part structure.
Fig. 5 is the figure representing Defrost heater structure.
Fig. 6 is the schematic diagram of the refrigerant flow path of the refrigerator representing embodiments of the invention 1.
Fig. 7 is the time diagram of the control representing embodiments of the invention 1.
Fig. 8 is the flow chart of the defrost control representing embodiments of the invention 1.
Fig. 9 is the schematic diagram of the refrigerant flow path of the refrigerator representing embodiments of the invention 2.
Figure 10 is the time diagram of the control representing embodiments of the invention 2.
Figure 11 represents the prominent flow chart executing the defrost control of example 2 of the present invention.
Figure 12 is the schematic diagram of the refrigerant flow path of the refrigerator representing embodiments of the invention 3.
Figure 13 is the time diagram of the control representing embodiments of the invention 3.
Figure 14 is the flow chart of the defrost control representing embodiments of the invention 3.
Figure 15 is the schematic diagram of the refrigerant flow path of the refrigerator representing embodiments of the invention 4.
Figure 16 is the schematic diagram of the refrigerant flow path of the refrigerator representing embodiments of the invention 5.
Figure 17 is the time diagram of the control representing embodiments of the invention 5.
Figure 18 is the flow chart of the defrost control representing embodiments of the invention 5.
Figure 19 is the time diagram of the control representing embodiments of the invention 6.
Figure 20 is the flow chart of the defrost control representing embodiments of the invention 6.
In figure:
7-cooler, 9-box fan (in case pressure fan), 18-chiller temperature sensor, 20-refrigerated storage temperature band room air door, 22 Defrost heaters (heating arrangements), 24-compressor, 50-cryogenic temperature band room air door, 52-condensing mechanism, 52a-condenser, 52b-radiating tube, 52c-radiating tube (the first refrigerant flow path), 54, 54a-refrigerant valve (triple valve, first refrigerant flow path guiding mechanism), 54b-refrigerant valve (two-port valve, second refrigerant runner guiding mechanism), 54c-refrigerant valve (two-port valve), 55-tube connector (Duan Network パ イ プ) (second refrigerant runner), 56-check-valves, 57-separating part, 58-decompressor, 59-suction line, 60-refrigerant valve (two-port valve, refrigerant flow path guiding mechanism), 61-refrigerant valve (cross valve, refrigerant flow path guiding mechanism).
Detailed description of the invention
The present invention has the compressor of compressed refrigerant, the condenser of the cold-producing medium that condensation is compressed by above-mentioned compressor, to the decompressor reduced pressure by the cold-producing medium of above-mentioned condenser condenses, make the cooler evaporated by the cold-producing medium that above-mentioned decompressor reduces pressure, heat the heating arrangements of above-mentioned cooler, in the refrigerator of the refrigerant flow path guiding mechanism of blocking refrigerant flow path, it is characterized in that: when the defrosting running of above-mentioned cooler, above-mentioned refrigerant flow path is interdicted with above-mentioned refrigerant flow path guiding mechanism, above-mentioned compressor is stopped, when heating above-mentioned cooler with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, open wide above-mentioned refrigerant flow path.Like this, what can not increase heating arrangements generation adds heat, can shorten defrosting time, can suppress consumes power.
In addition, refrigerator of the present invention has: the compressor of compressed refrigerant; The condenser of the cold-producing medium that condensation is compressed by above-mentioned compressor; To the decompressor reduced pressure by the cold-producing medium of above-mentioned condenser condenses; Make the cooler evaporated by the cold-producing medium that above-mentioned decompressor reduces pressure; And heating the heating arrangements of above-mentioned cooler, the feature of above-mentioned refrigerator is to have: the first refrigerant flow path of the front portion of the separating part of heating storeroom; Be set up in parallel with above-mentioned first refrigerant flow path, connect (Duan Network) the second refrigerant runner of above-mentioned condenser and above-mentioned decompressor; And be located at from above-mentioned condenser to above-mentioned first refrigerant flow path and second refrigerant flow channel entry point, first refrigerant flow path guiding mechanism of blocking or switching the first refrigerant flow path and second refrigerant runner, when the defrosting running of above-mentioned cooler, utilize above-mentioned first refrigerant flow path guiding mechanism above-mentioned first refrigerant flow path of blocking and second refrigerant runner, above-mentioned compressor is stopped, when heating above-mentioned cooler with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, open wide above-mentioned second refrigerant runner.Like this, what can not increase heating arrangements generation adds heat, can shorten defrosting time, can suppress consumes power.
In addition, having to be arranged on exports between above-mentioned decompressor from above-mentioned first refrigerant flow path and second refrigerant runner, interdict the second refrigerant runner guiding mechanism of above-mentioned first refrigerant flow path and second refrigerant runner, above-mentioned compressor is stopped, with second refrigerant runner guiding mechanism blocking cold-producing medium from above-mentioned first refrigerant flow path and second refrigerant runner to the inflow of above-mentioned cooler, when heating above-mentioned cooler with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, open wide the inflow of cold-producing medium to above-mentioned cooler.Like this, during by suppressing to defrost, heat is to the intrusion of storeroom, can shorten the cooling of the rear storeroom of defrosting, can suppress consumes power.In addition, the temperature of the separating part of refrigerator can be kept, can prevent from condensing during defrosting.
In addition, there is following characteristics: after making at unlimited above-mentioned second refrigerant runner above-mentioned cold-producing medium flow into scheduled volume, open wide above-mentioned first refrigerant flow path, make the temperature on above-mentioned cooler top increase.Like this, owing to making without above-mentioned first refrigerant flow path cold-producing medium flow into cooler, therefore, it is possible to preventing heat from invading in case, and do not cool off because of the heat cold-producing medium in case, make cold-producing medium flow into cooler with the state of high temperature.
In addition, there is following characteristics: be provided with check-valves or two-port valve in above-mentioned first refrigerant flow path outlet.Like this, can prevent flow of refrigerant to the first refrigerant flow path and second refrigerant runner refrigerant flow path between.
In addition, there is following characteristics: make above-mentioned predetermined temperature near the melt temperature of frost.Like this, due to the melt temperature at frost, the temperature of cold-producing medium does not change, and by opening wide refrigerant flow path near the melt temperature of frost, the latent heat of frost can be utilized more effectively to defrost.
In addition, there is following characteristics: in the above-mentioned refrigerant flow path of blocking and after a predetermined time, to reclaim in above-mentioned cooler residual cold-producing medium.Like this, the temperature of the separating part of refrigerator can be kept, condensation when defrosting can be suppressed.
In addition, there is following characteristics: stop making above-mentioned compressor and after a predetermined time after, to adjust in above-mentioned cooler residual refrigerant amount.Like this, remain a certain amount of owing to flowing into the cold-producing medium of cooler, therefore, it is possible to the heat heat becoming to melt the frost be attached on cooler in the past for the Defrost heater that makes the cold-producing medium of inflow cooler warm, can defrosting time be shortened.
In addition, there is following characteristics: be provided with check-valves or two-port valve in above-mentioned first refrigerant flow path outlet.Can prevent cold-producing medium from coming between above-mentioned refrigerant flow path like this.
In addition, there is following characteristics: above-mentioned storeroom is the refrigerated storage temperature band room and cryogenic temperature band room that arrange in refrigerator main body, possesses: pressure fan in the case of the cold air generated with above-mentioned cooler to above-mentioned refrigerated storage temperature band room and the supply of above-mentioned cryogenic temperature band room; Adjust the refrigerated storage temperature band room air door of the air conditioning quantity to the supply of above-mentioned refrigerated storage temperature band room; And adjustment is to the cryogenic temperature band room air door of the air conditioning quantity of above-mentioned cryogenic temperature band room supply, make that pressure fan in above-mentioned case is in driving condition, above-mentioned compressor is in halted state, above-mentioned refrigerant flow path is in blocking state, above-mentioned heating arrangements is in driving condition, above-mentioned cryogenic temperature band room air door is in closed condition, above-mentioned refrigerated storage temperature band room air door is in open mode, utilizes the latent heat of the frost of above-mentioned cooler to cool above-mentioned refrigerated storage temperature band room.Like this, due to can when defrosting cooling refrigeration temperature band room, therefore, it is possible to suppress to after usually cooling running starts again from defrosting running, the consumes power required for storeroom cooling.
In addition, there is following characteristics: above-mentioned storeroom is the refrigerated storage temperature band room and cryogenic temperature band room that arrange in refrigerating chamber main body, possesses: pressure fan in the case of the cold air generated to above-mentioned refrigerated storage temperature band room and the above-mentioned cryogenic temperature band room above-mentioned cooler of supply; Adjust the refrigerated storage temperature band room air door of the air conditioning quantity to the supply of above-mentioned refrigerated storage temperature band room; And adjustment is to the cryogenic temperature band room air door of the air conditioning quantity of above-mentioned cryogenic temperature band room supply, above-mentioned cooler is heated with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, make that above-mentioned refrigerant flow path is in opening-wide state, above-mentioned cryogenic temperature band room air door is in open mode, above-mentioned refrigerated storage temperature band room air door is in closed condition, make pressure fan in above-mentioned case be in halted state.Like this, can consumes power be suppressed, and the condensation such as separating part when suppressing defrosting.
Referring to accompanying drawing, embodiments of the invention are described.
(overall structure of refrigerator)
First, referring to figs. 1 through Fig. 6, the overall structure of refrigerator of the present invention is described.Fig. 1 is the front view of the refrigerator of the present embodiment.Fig. 2 is the A-A longitudinal section in Fig. 1.Fig. 3 is the front view of the case inner structure representing refrigerator, is the figure of the configuration representing cold air path and blow-off outlet etc.
As shown in Figure 1, from the top of refrigerator 1, have successively refrigerating chamber 2, left and right configuration ice-making compartment 3 and upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5, vegetable compartment 6.There is at the front openings place of refrigerating chamber 2 refrigerating-chamber door 2a, 2b of the opposite opened (appearance of french doors) of left and right segmentation.The front openings place of ice-making compartment 3, upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5 and vegetable compartment 6 possesses drawer type ice-making compartment door 3a, upper strata refrigerating chamber door 4a, lower floor refrigerating chamber door 5a and vegetable compartment door 6a respectively.
As shown in Figure 2, between outer container 45 and interior case 46, be filled with foamed thermal insulating (polyurathamc), form body of thermal insulating box 10.Like this, the inside and outside of refrigerator 1 separates insulatedly.In addition, multiple vacuum heat insulation materials 25 is installed between outer container 45 and interior case 46.Further, in fig. 2, vacuum heat insulation material 25 is located at the rear portion of refrigerator 1, but is located at top or bottom, heat-insulating property can also be improved further.
Refrigerating chamber 2 and upper strata refrigerating chamber 4 and ice-making compartment 3 (not shown with reference to ice-making compartment 3 in Fig. 1, Fig. 2) insulated partition wall about 28 adiabatically demarcate.Further, adiabatic partition wall 28 is provided with vacuum heat insulation materials 25.Like this, the heat-insulating property of the refrigerating chamber 2 as refrigerated storage temperature band and the upper strata refrigerating chamber 4 as cryogenic temperature band and ice-making compartment 3 can be improved, improve the cooling effectiveness of each storeroom.In addition, lower floor's refrigerating chamber 5 and vegetable compartment 6 are adiabatic partition wall 29 and adiabatically separate.
Multiple door pocket 32 as tank is had on inside the case of refrigerating-chamber door 2a.In addition, in refrigerating chamber 2, be longitudinally provided with multiple shelf 36, be divided into multiple storage space.
Ice-making compartment 3, upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5 and vegetable compartment 6 be provided with respectively with ice-making compartment door 3a, upper strata refrigerating chamber door 4a, lower floor refrigerating chamber door 5a and vegetable compartment door 6a one pull out accommodating container 3b (not shown), 4b, 5b, 6b.
As shown in FIG. 2 and 3, in the cooler room 8 that the rear that cooler 7 is located at lower floor's refrigerating chamber 5 is arranged.Pressure fan 9 in case is provided with in the overhead projection position of cooler 7.By pressure fan in case 9, be sent to refrigerating chamber 2, vegetable compartment 6, upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5 and ice-making compartment 3 with cooler 7 heat exchange and cooled air (hereinafter referred to as " cold air ") by refrigerating chamber air-supply passage 11, vegetable compartment air-supply passage 14 (with reference to Fig. 3), upper strata refrigerating chamber air-supply passage 12, lower floor's refrigerating chamber air-supply passage 13 and ice-making compartment air-supply passage (not shown).Further, each air-supply passage is located at the rear of each room of refrigerator 1 as shown in phantom in Figure 3.
In addition, the air output to the cold air of each storeroom is controlled by the opening and closing of refrigerated storage temperature band room air door 20, cryogenic temperature band room air door 50, vegetable compartment passage 51.When refrigerated storage temperature band room air door 20 is open mode, pressure fan 9 in case is utilized via refrigerating chamber air-supply passage 11, to be sent to refrigerating chamber respectively from blow-off outlet 2c with the cold air after cooler 7 heat exchange.The cold air cooling refrigerating chamber 2 via refrigerating chamber backward channel 16, viewed from the front of cooler room 8, returns lower right side from the return port 2d arranged in refrigerating chamber 2 lower rear.
On the other hand, when cryogenic temperature band room air door 50 is open mode, via ice-making compartment air-supply passage (not shown), upper strata refrigerating chamber air-supply passage 12 and lower floor's refrigerating chamber air-supply passage 13, be sent to ice-making compartment 3, upper strata refrigerating chamber 4 and lower floor's refrigerating chamber 5 respectively from blow-off outlet 3c, 4c, 5c.The cold air cooling ice-making compartment 3, upper strata refrigerating chamber 4 and lower floor's refrigerating chamber 5 returns to cooler room 8 by the refrigerating chamber return port 17 arranged in lower floor's refrigerating chamber 5 lower rear.
On the other hand, when vegetable compartment passage 51 is open mode, via vegetable compartment air-supply passage 14 (with reference to Fig. 3), blow from blow-off outlet 6c to vegetable compartment 6.Return the never illustrated vegetable compartment return port of air via vegetable compartment backward channel from vegetable compartment 6, be returned to the left lower of cooler room 8.
Machine Room 19 is provided with at the rear, bottom of refrigerator 1.In Machine Room 19, folding and unfolding has the condensing mechanism 52 shown in compressor 24 and Fig. 4, drier 53, refrigerant valve 54, is ventilated, remove the heating produced by respective running by the outer pressure fan of not shown case to compressor 24 and condensing mechanism 52.
The control substrate 31 as control device is configured with at the upper back of refrigerator 1.By being pre-installed in the program controlled on substrate 31, the ON/OFF of carrying out compressor 24 controls and rotary speed controls, the control of refrigerated storage temperature band room air door 20, cryogenic temperature band room air door 50, vegetable compartment passage 51, the ON/OFF of pressure fan 9 controls and rotary speed controls, the ON/OFF control of the outer pressure fan 9 of case and rotary speed control etc. in case.
The frost be attached on the wall of the cooler room 8 of cooler 7 and periphery thereof etc. is removed by the Defrost heater 22 arranged below cooler 7.By defrosting, the defrost water that frost melts and produces drips in the chute 23 be equipped with in bottom, cooler room 8, is then stored in by drainpipe 27 in the evaporating dish 21 configured above the compressor 24 of Machine Room 19.Like this, by being evaporated from the heating of compressor 24 and not shown condenser and the ventilation of the outer pressure fan of not shown case.
Further, in the present embodiment, as cold-producing medium iso-butane, cold-producing medium enclosed volume is a small amount of, about 88g.
(peripheral construction of cooler)
Its this, be described with reference to the peripheral construction of Fig. 4 to the cooler 7 of the refrigerator 1 of the present embodiment.Fig. 4 is the front view of cooler 7 peripheral part.Fig. 5 is the stereogram of Defrost heater.
As shown by the arrows in Figure 4, return cold air via refrigerating chamber backward channel 16 from refrigerating chamber 2, flowing into when observing from the front of cooler room 8 is lower right side.In other words, be provided with refrigerating chamber backward channel 16 to make to flow into the below of cooler 7 from the cold air that returns of refrigerating chamber 2.
Chiller temperature sensor 18 is equipped with in the left upper portion of cooler 7.Defrosting running is undertaken by be energized to Defrost heater 22 (power output of the Defrost heater 22 of the present embodiment is 160W).Also have, Defrost heater 22 as shown in Figure 5, has glass tube 22c, the heater line (not shown) be built in glass tube 22c, does not contact and be configured to spiral helicine radiating fin 22b and in order to prevent defrost water from dripping to the upper lid 22a that glass tube 22c is arranged with the periphery of glass tube.The end of defrosting running is judged by chiller temperature sensor 18.
In addition, return cold air via not shown vegetable compartment backward channel from vegetable compartment 6, return cold air inflow part 6d from the vegetable compartment in left lower front, cooler room 8 and flow into cooler room 8.In other words, arrange vegetable compartment to return cold air inflow part 6d and make to flow into the below of cooler 7 from the cold air that returns of vegetable compartment 6.
In addition, cool ice-making compartment 3, upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5 return cold air through cooler room 8 lower front portion arrange refrigerating chamber return port 17, flow into cooler room 8.In other words, the below returning cold air inflow cooler 7 that refrigerating chamber return port 17 makes to cool ice-making compartment 3, upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5 is set.
Embodiment 1
Secondly, be described with reference to the freeze cycle of Fig. 6 to embodiment 1.Fig. 6 is the schematic diagram of the refrigerant flow path representing refrigerator.
In Fig. 6,24 is the compressors of compressed refrigerant in freeze cycle, is arranged in the Machine Room 19 shown in Fig. 2, controls as changing rotating speed by controlling substrate 31.52 is condensing mechanisms of the cold-producing medium that condensation is compressed by compressor 24.
Condensing mechanism 52 is made up of the radiating tube 52b being configured in the condenser 52a of the cold-producing medium that Machine Room 19 condensation are compressed by compressor 24, condensating refrigerant and preventing condenses in the side of refrigerator 1, condensating refrigerant and the radiating tube 52c preventing separating part 57 from condensing.Further, the separating part 57 of configuration radiating tube 52c as shown in Figure 3, is that the vertical separating part separating ice-making compartment 3 and upper strata refrigerating chamber 4 by the cross septation portion of ice-making compartment 3 and upper strata refrigerating chamber 4 and lower floor's refrigerating chamber about 5 being separated, left and right is formed.
In figure 6,60 is blocking refrigerant valves (refrigerant flow path guiding mechanism) to the refrigerant flow path of decompressor 58, and this decompressor 58 reduces pressure to the cold-producing medium of condensing mechanism 52 condensation.7 is the coolers making to be depressurized the post-decompression cold-producing medium evaporation of device 58, is located in the cooler room 8 shown in Fig. 2.
59 is the suction lines being connected to compressor 24 from cooler 7.Connect compressor 24, condensing mechanism 52, refrigerant valve 60, decompressor 58, cooler 7, suction line 59 and form freeze cycle successively.
Secondly, controlling organization when defrosting in embodiment 1 is described.Fig. 7 is the time diagram of state of compressor in the defrosting of the refrigerator representing embodiment 1, Defrost heater, refrigerant valve.In the figure 7, horizontal axis representing time, the longitudinal axis represents the humidity of chiller temperature sensor 18, the running/stopping (ON/OFF) of compressor, the energising/stopping (ON/OFF) of Defrost heater, the opening/closing state of refrigerant valve respectively.In the figure 7, represent that t1, t2, t3 of the longitudinal axis of the temperature of cooler are the temperature of chiller temperature sensor 18 respectively, temperature when temperature, t2 when t1 represents that defrosting starts represent that the upper and lower of cooler produces temperature difference, t3 represent defrosting end temp, there is the relation of t1 < t2 < t3, also schematically show the variations in temperature of cooler.
Refrigerator is operated, and on cooler 7, a lot of frost of attachment, defrosts to make cooling effectiveness not decline.The defrosting condition of starting shown in Fig. 8 is the accumulation duration of runs calculating refrigerator from defrosting last time terminating, and starts defrosting when reaching the stipulated time.Defrosting beginning condition stops the running of compressor 24, meanwhile, interdicts refrigerant flow path with refrigerant valve 60, prevent cold-producing medium to the inflow of cooler 7 after setting up.
During usual running, to be high-pressure side from compressor 24 discharge opening to the entrance of decompressor 58, to export to suction line 59 from decompressor 58 for low-pressure side running.For this reason, when compressor 24 stops, due in order to eliminate pressure differential, cold-producing medium flows into from high side to low side and closes refrigerant valve 60, blocking refrigerant flow path, although thus flow into from refrigerant valve 60 to the cold-producing medium of cooler 7 to cooler 7, the capacity of decompressor 58 is little, and cold-producing medium flows into cooler 7 hardly.
Then, start to be energized to Defrost heater 22.Now, because cold-producing medium does not flow into cooler 7, therefore the heat of the original Defrost heater 22 for the cold-producing medium flowing into cooler 7 of heating for melting the frost be attached on cooler 7, thus defrosting time can be shortened.In addition, owing to interdicting refrigerant flow path by refrigerant valve 60, therefore the pressure of radiating tube 52b, 52c does not change, and temperature can not reduce because of pressure drop.Therefore, the side of refrigerator 1 and the temperature of separating part 57 can be kept, suppress frosting during defrosting.
Then, be energized more than the scheduled time if chiller temperature sensor 18 reaches predetermined temperature or Defrost heater 22, open refrigerant valve 60, open wide refrigerant flow path.For this reason, after the pressure differential before and after the refrigerant valve 60 of cooled dose of valve 60 maintenance is eliminated, cold-producing medium flows into cooler 7.Now, because cold-producing medium flows into the cooler 7 of low-pressure side, the pressure increase of cooler 7, the temperature of cooler 7 rises, and in addition, the cold-producing medium for cooler 7, Yin Gaowen flows into, and the temperature of cooler 7 rises, therefore, it is possible to shorten defrosting time.Also have, if the time of blocking refrigerant flow path is long, then may be used for melting time of the frost be attached on cooler 7 for the heat of Defrost heater 22 of the cold-producing medium flowing into cooler 7 of heating elongated, but the cold-producing medium decreasing high temperature flows into the temperature rising of the cooler 7 caused in the past.At the melt temperature of frost, due to temperature-resistantization of cold-producing medium, therefore by opening wide refrigerant flow path near the melt temperature of frost, can effectively defrost further.
Then, when chiller temperature sensor 18 reaches the set point of temperature of defrosting end, stop the energising of Defrost heater 22, and again start the running of compressor 24, return the running of common cold storage room.Also have, open refrigerant valve 60, open wide the predetermined temperature of refrigerant flow path and Defrost heater conduction time, predetermined temperature that defrosting terminates because of compressor capacity, enclose refrigerant amount, air channel structure, storeroom capacity etc. and different, therefore preset according to test etc.In addition, when defrosting starts, make the simultaneously action of compressor 24, refrigerant valve 54, but change the time difference and order is also passable not having in influential scope.
Therefore, the turn on angle not increasing Defrost heater 22 just can shorten defrosting time, can suppress consumes power.And, the side of refrigerator 1 and the temperature of separating part 57 can be kept, condensation when defrosting can be suppressed.
Secondly, Fig. 8 is the flow chart of the defrost control representing embodiment 1.In fig. 8, step 101 is steps of common cooling running, step 102 is the steps judging whether defrosting beginning condition is set up, step 103 is that refrigerant valve 60 is closed, the step of refrigerant flow path blocking, step 104 is steps that compressor 24 is stopped, step 105 is the steps starting to be energized to Defrost heater 22, step 106 judges whether chiller temperature sensor 18 reaches the step of temperature t2, step 107 judges whether Defrost heater reaches the step of stipulated time Tlimit1 conduction time, step 108 is that refrigerant valve 60 is opened, the step that refrigerant flow path is opened wide, step 109 judges whether chiller temperature sensor 18 reaches the step of defrosting end temp t3, step 110 is the steps of the energising terminating Defrost heater 22, step 111 is steps that compressor 24 is started again.
Step 101 is common cooling commissioning steps, based on by not shown external air temperature sensor or and the state of refrigerator 1 that detects of refrigerated storage temperature band room sensor, cryogenic temperature band room sensor, vegetable compartment sensor, the common cooling being carried out the temperature controlling each storeroom by the opening and closing etc. of the ON/OFF of pressure fan 9 in compressor 24 and case and refrigerated storage temperature band room air door 20, cryogenic temperature band room air door 50, vegetable compartment passage 51 is operated.
Step 102 is the steps judging whether defrosting beginning condition is set up, and calculates the accumulated running time of the refrigerator from the defrosting of last time terminates, makes the defrosting condition that starts set up when reaching the scheduled time.In the invalid situation of defrosting beginning condition, then return step 101 and carry out common cooling running, again judge defrosting beginning condition in step 102.When the beginning condition that defrosts is set up, in step 103, refrigerant valve 60 is closed, blocking refrigerant flow path, stops the running of compressor 24 in step 104.Further, the accumulated running time of refrigerator is different because of the opening and closing number of times of door and time, external air temperature etc.
Then, start to be energized to Defrost heater 22 in step 105, melt the frost be attached on cooler 7.Step 106 judges whether chiller temperature sensor 18 reaches the step of predetermined temperature t2, when chiller temperature sensor 18 reaches predetermined temperature t2, in step 108, refrigerant valve 60 opened, and opens wide refrigerant flow path.In addition, when chiller temperature sensor 18 does not reach predetermined temperature t2, judge whether Defrost heater reaches Tlimit1 conduction time in step 107, when Defrost heater reaches Tlimit1 conduction time, in step 108, refrigerant valve 60 is opened, open wide refrigerant flow path.In addition, when Defrost heater does not reach Tlimit1 conduction time, then return step 106, judge whether chiller temperature sensor 18 reaches predetermined temperature t2.
Then, judge whether chiller temperature sensor 18 reaches defrosting and terminate predetermined temperature t3, if do not reached, then repeatedly judges whether to reach predetermined temperature t3 in step 109 in step 109.When reaching predetermined temperature t3, terminating, to the energising of Defrost heater, again to start compressor in step 111 in step 110, returning common cooling running in step 101.
Further, step 103, step 104, step 105 can be carried out simultaneously, also can not have influential time difference change order.In addition, step 106, step 107 change order also passable.
Like this, by possessing the step and closedown refrigerant valve 60 and the step of blocking refrigerant flow path that make compressor 24 stop, thus cold-producing medium does not flow into cooler 7, the heat of the Defrost heater of the cold-producing medium flowing into cooler 7 that was in the past used for heating can be used for melting the heat of the frost be attached on cooler 7, by opening refrigerant valve 60 in step 108, open wide refrigerant flow path, cold-producing medium flows into cooler 7, the pressure increase of cooler 7, the temperature of cooler 7 rises, in addition the cold-producing medium for cooler 7, Yin Gaowen flows into and the rising of the temperature of cooler 7.Therefore, do not increase the turn on angle of Defrost heater 22, just can shorten defrosting time, can consumes power be suppressed.
(embodiment 2)
Secondly, be described with reference to the freeze cycle of Fig. 9 to embodiment 2.Fig. 9 is the schematic diagram of the refrigerant flow path representing refrigerator.
55 is the tube connectors (second refrigerant runner) connecting radiating tube 52b and decompressor 58.54 is blocking or the refrigerant valve (the first refrigerant flow path guiding mechanism) switching radiating tube 52c (the first refrigerant flow path) and tube connector 55 (second refrigerant runner).56 is at the check-valves that refrigerant flow path outlet (outlet of radiating tube 52c (the first refrigerant flow path)) is arranged between the refrigerant flow path in order to prevent cold-producing medium from coming radiating tube 52c and tube connector 55.Other symbol due to identical with embodiment 1, the symbol that therefore note is same and omitting the description.
Controlling organization during defrosting in embodiment 2 is described.Figure 10 is the time diagram of the state of compressor, Defrost heater, refrigerant valve in the defrosting of the refrigerator of the control representing embodiment 2.In Fig. 10, horizontal axis representing time, the longitudinal axis represents the state of the running/stopping (ON/OFF) of the temperature of chiller temperature sensor 18, compressor, the energising/stopping (ON/OFF) of Defrost heater, radiating tube 52c (the first refrigerant flow path) side of refrigerant valve, tube connector 55 (second refrigerant runner) side, contract fully respectively.In figure, represent that t1, t2, t3 of the longitudinal axis of the temperature of cooler are identical with t1, t2, t3 of embodiment 1 and thus omit the description.
Refrigerator operates, and cooler 7 attached to a lot of frost, defrosting to not reduce cooling effectiveness.The defrosting condition of starting shown in Figure 10 is the accumulation duration of runs calculating refrigerator from defrosting last time terminates, starts defrosting when reaching the scheduled time.Defrosting beginning condition is interdicted refrigerant flow path with refrigerant valve 54, is stopped the running of compressor 24 after certain hour, all or part of removal of cold-producing medium existed in radiating tube 52c, tube connector 55, cooler 7 after setting up.
Namely use refrigerant valve 54 to interdict refrigerant flow path, compressor 24 also operates, and therefore, is gathered in the high-pressure side from the discharge opening of compressor 24 to refrigerant valve 54 from refrigerant valve 54 to the cold-producing medium of the low-pressure side of suction line 59.Therefore, after certain hour, by stopping compressor 24, the cold-producing medium remained in cooler 7 just can be adjusted.Further, from blocking refrigerant flow path to stopping the time of compressor 24 short or when stopping compressor interdicting refrigerant flow path as embodiment 1 simultaneously, the cold-producing medium of radiating tube 52c and tube connector 55 flows into cooler 7.
The effect that blocking refrigerant flow path produces is identical with embodiment 1 and omit the description.
Then, when chiller temperature sensor 18 reaches predetermined temperature or is energized more than the scheduled time to Defrost heater 22, refrigerant valve 54 is opened to tube connector 55 side, open wide tube connector 55.Therefore, after the pressure differential before and after the refrigerant valve 54 kept with refrigerant valve 54 is removed, cold-producing medium flows into cooler 7.Now, because cold-producing medium flows into the cooler 7 of low-pressure side, the pressure increase of cooler 7, temperature rises, and in addition, the cold-producing medium for cooler 7, Yin Gaowen flows into, and the temperature of cooler 7 rises, thus can shorten defrosting time.In addition, owing to not passing through radiating tube 52c, therefore, it is possible to prevent heat to the intrusion in case, because of the heat in case, cold-producing medium can not turn cold, and thus cold-producing medium can be made to flow into cooler 7 keeping the state of high temperature.
Then, when chiller temperature sensor 18 reaches the set point of temperature of defrosting end, stop the energising to Defrost heater 22, and refrigerant valve 54 is opened to radiating tube 52c side, again start the running of compressor 24, return the running of common cold storage room.In addition, when defrosting starts, make the simultaneously action of compressor 24, Defrost heater 22, refrigerant valve 54, change the time difference and order is also passable not having in influential scope.
Therefore, do not increase the turn on angle of Defrost heater 22, just can shorten defrosting time, during by suppressing to defrost, heat invades to storeroom, thus can shorten the cooling of the storeroom after defrosting, suppresses consumes power.In addition, the side of refrigerator 1 and the temperature of separating part 57 can be kept, suppress to condense during defrosting.
Figure 11 is the flow chart of the defrost control representing embodiment 2.In fig. 11, step 212 makes refrigerant valve 54 close completely and interdict the step of refrigerant flow path, step 213 judges from making refrigerant valve 54 close completely and whether the time of interdicting refrigerant flow path reaches the step of the scheduled time Tlimit2 removing the cold-producing medium remained in cooler 7, step 214 refrigerant valve is opened and only tube connector 55 opens wide the step of refrigerant flow path, and step 215 is steps that refrigerant valve 54 is opened to radiating tube 52c side.Step 201 ~ step 211 is identical with the step 101 ~ step 111 of embodiment 1 and omit the description.
When the beginning condition that defrosts is set up, in step 212, refrigerant valve 54 is closed completely, blocking refrigerant flow path.Step 213 judges from making refrigerant valve 54 close completely and whether the time of interdicting refrigerant flow path reaches the step of the scheduled time Tlimit2 removing the cold-producing medium remained in cooler 7, if the time from blocking refrigerant flow path does not reach scheduled time Tlimit2, then repeatedly judge whether to reach scheduled time Tlimit2 in step 204.If reach scheduled time Tlimit2, then stop the running of compressor 24 in step 205.
Then, predetermined temperature t2 is reached in step 206 chiller temperature sensor 18, or when step 207 Defrost heater reaches Tlimit1 conduction time, make refrigerant valve 54 open to tube connector 55 side in step 214, only tube connector 55 opens wide refrigerant flow path.
Then, when step 209 chiller temperature sensor 18 reaches predetermined temperature t3, in step 215, refrigerant valve 54 is opened to radiating tube 52c side.
Like this, the step of the stipulated time Tlimit2 removing the cold-producing medium remained in cooler 7 is judged whether to reach by possessing, the refrigerant amount remained in cooler 7 can be adjusted, in addition, opening wide the step of refrigerant flow path by possessing only tube connector 55, owing to not passing through radiating tube 52c, thus heat can be prevented to the intrusion in refrigerator, due to the heat in refrigerator, cold-producing medium is not turned cold, therefore, it is possible to make cold-producing medium flow into cooler 7 under the state of high temperature.Therefore, do not increase the turn on angle of Defrost heater, just can shorten defrosting time, can consumes power be suppressed.
(embodiment 3)
Secondly, be described with reference to the freeze cycle of Figure 12 to embodiment 3.
In fig. 12,54a is blocking or the refrigerant valve (the first refrigerant flow path guiding mechanism) switching radiating tube 52c and tube connector 55,54b is the refrigerant valve (second refrigerant runner guiding mechanism) of blocking to the refrigerant flow path of decompressor 58, and the cold-producing medium of this decompressor 58 to the mechanism's condensation that is condensed reduces pressure.Other symbol is identical with embodiment 1 and omit the description.
Controlling organization during defrosting in embodiment 3 is described.Figure 13 is the time diagram of state of compressor in the defrosting of the refrigerator of the control representing illustrated embodiment 3, Defrost heater, the first refrigerant flow path guiding mechanism, second refrigerant runner guiding mechanism.In fig. 13, horizontal axis representing time, the longitudinal axis represents the opening/closing state of the running/stopping (ON/OFF) of the temperature of each chiller temperature sensor 18, compressor, the energising/stopping (ON/OFF) of Defrost heater, the radiating tube 52c side of refrigerant valve 54a, tube connector 55 side, the state of closing completely, refrigerant valve 54b respectively.In figure, t1, t2, t3 of the longitudinal axis of the temperature of expression cooler are identical with t1, t2, t3 of embodiment 1 and omit the description.
In fig. 13, defrosting beginning condition stops the running of compressor 24 after setting up, and meanwhile, by making refrigerant valve 54a, refrigerant valve 54b closes completely, blocking refrigerant flow path, thus prevents cold-producing medium to the inflow of cooler 7.
During usual running, be high-pressure side with the entrance from the discharge opening of compressor 24 to decompressor 58, export to suction line 59 from decompressor 58 for low-pressure side running.Therefore, when compressor 24 stops, eliminate pressure differential, cold-producing medium is flowed into from high side to low side, but owing to making refrigerant valve 54a, refrigerant valve 54b closes completely, blocking refrigerant flow path, therefore, although flow into cooler 7 from refrigerant valve 54b to the cold-producing medium of cooler 7, the capacity of decompressor 58 is very little, thus flows into cold-producing medium hardly in cooler 7.In addition, owing to making refrigerant valve 54a close completely, cold-producing medium does not flow into radiating tube 52c, and cold-producing medium can remain in condenser 52a, radiating tube 52b with the state of high temperature.
The effect that blocking refrigerant flow path produces is identical with embodiment 1 and omit the description.
Then, when chiller temperature sensor 18 reaches predetermined temperature or is energized more than the scheduled time to Defrost heater 22, refrigerant valve 54a is opened to tube connector 55 side, opens refrigerant valve 54b, open wide refrigerant flow path.Therefore, after eliminating the pressure differential before and after refrigerant valve 54b that cooled dose of valve 54b keep, cold-producing medium flows into cooler 7.Identical with embodiment 2 below and omit the description.In addition, when defrosting starts, make compressor 24, Defrost heater 22, refrigerant valve 54a, refrigerant valve 54b simultaneously action, change the time difference and order is also passable not having in influential scope.
Therefore, do not increase the turn on angle of Defrost heater 22, just can shorten defrosting time, during by suppressing to defrost, heat invades to storeroom, can shorten the cooling of the storeroom after defrosting, suppresses consumes power.In addition, the side of refrigerator 1 and the temperature of separating part 57 can be kept, suppress to condense during defrosting.
Figure 14 is the flow chart of the defrost control representing embodiment 3.In figure, step 316 is while step 312 makes refrigerant valve 54a close completely, refrigerant valve 54b is closed, interdicts the step of the refrigerant flow path to decompressor 58.Step 317 in step 314, refrigerant valve 54a is opened, and makes refrigerant valve 54b open simultaneously, open wide the step of the refrigerant flow path to decompressor 58.Step 301 ~ step 315 is identical with the step 201 ~ step 215 of embodiment 1 and omit the description.
In step 302, when defrosting beginning condition is set up, while step 312 makes refrigerant valve 54a close completely, refrigerant valve 54b is closed, interdicts the refrigerant flow path to decompressor 58.In step 314, refrigerant valve 54a is opened to tube connector 55 side, and only tube connector 55 opens wide refrigerant flow path, meanwhile, refrigerant valve 54b is opened, opens wide the refrigerant flow path to decompressor 58.Further, step 312 and step 316, step 314 and step 317 can be carried out simultaneously, also can not have influential time difference change order.
Like this, by possess refrigerant valve 54a is closed completely while refrigerant valve 54b is closed, interdict the step of the refrigerant flow path to decompressor 58 and cooler 7, and, while refrigerant valve 54a is opened to tube connector 55 side, refrigerant valve 54b is opened, open wide the step of the refrigerant flow path to decompressor 58 and cooler 7, thus the effect identical with embodiment 2 can be obtained.
(embodiment 4)
Secondly, be described with reference to the freeze cycle of Figure 15 to embodiment 4.In fig .15,54c be blocking to the refrigerant flow path of decompressor 58, prevent cold-producing medium from coming refrigerant valve (two-port valve) between radiating tube 52c and tube connector 55, above-mentioned decompressor 58 reduces pressure to the cold-producing medium by condenser condenses.Other symbol is identical with embodiment 1 and omit the description.
Controlling organization during defrosting in embodiment 4 is described.Identical with embodiment 2 and omit the description to the control of compressor, Defrost heater, refrigerant valve 54a, refrigerant valve 54c (being check-valves 56 in embodiment 2).
During usual running, with the entrance from the discharge opening of compressor 24 to decompressor 58 for high-pressure side, export to suction line 59 for low-pressure side from decompressor 58 and operate.Therefore, when compressor 24 stops, if eliminate pressure differential, cold-producing medium is flowed into from high side to low side, owing to making refrigerant valve 54a, refrigerant valve 54c closes completely, blocking refrigerant flow path, therefore, although flow into cooler 7 from the refrigerant flow path of tube connector 55 and refrigerant valve 54c to the cold-producing medium of cooler 7, but the capacity of tube connector 55 is very little compared with radiating tube 52c, the capacity of decompressor 58 is very little, thus only flows into a small amount of cold-producing medium in cooler 7.In addition, owing to making refrigerant valve 54a close completely, cold-producing medium does not flow into radiating tube 52c, and cold-producing medium can remain in condenser 52a, radiating tube 52b with the state of high temperature.Further, as embodiment 2, by before compressor stops, making refrigerant valve 54a, refrigerant valve 54c close completely, adjust the refrigerant amount flowing into cooler 7 also passable, other control and effect identical with embodiment 2 and omit the description.
(embodiment 5)
Secondly, be described with reference to the freeze cycle of Figure 16 to embodiment 5.In figure 16,61 is can switch radiating tube 52c entrance and outlet, radiating tube 52b export, the refrigerant valve of the connection of decompressor 58 (refrigerant flow path guiding mechanism).Other symbol is identical with embodiment 1 and omit the description.
Controlling organization when defrosting in embodiment 5 is described.Figure 17 is the time diagram of state of compressor in the defrosting of the refrigerator of the control representing illustrated embodiment 5, Defrost heater, refrigerant valve 61.In figure 16, horizontal axis representing time, the longitudinal axis represents the running/stopping (ON/OFF) of the temperature of chiller temperature sensor 18, compressor respectively, the energising/stopping (ON/OFF) of Defrost heater, the connection radiating tube 52b of refrigerant valve 61 export with radiating tube 52c, is connected that radiating tube 52c exports with the A-B side of decompressor, is connected radiating tube 52c entrance and exit, connection radiating tube 52b exports and the A-C side of decompressor, the state of closing completely.In figure, t1, t2, t3 of the longitudinal axis of the temperature of expression cooler are identical with t1, t2, t3 of embodiment 1 and omit the description.
In figure 16, defrosting beginning condition by stopping the running of compressor 24, closes refrigerant valve 61 after setting up simultaneously completely, blocking refrigerant flow path, thus prevents cold-producing medium to the inflow of cooler 7.
The effect that blocking refrigerant flow path produces is identical with embodiment 1 and omit the description.
Then, when chiller temperature sensor 18 reaches predetermined temperature or is energized more than the scheduled time to Defrost heater 22, refrigerant valve 61 is opened to A-C side, open wide refrigerant flow path.Therefore, after eliminating the pressure differential before and after refrigerant valve 61 that cooled dose of valve 61 keep, cold-producing medium flows into cooler 7.The effect that cold-producing medium inflow produces is identical with embodiment 2 and omit the description.
Then, when chiller temperature sensor 18 reaches the predetermined temperature of defrosting end, stop the energising to Defrost heater 22, and refrigerant valve 61 is opened to A-B side, again make compressor 24 operate, return the running of common cold storage room.In addition, when defrosting starts, make the simultaneously action of compressor 24, Defrost heater 22, refrigerant valve 61, but change the time difference and order is also passable not having in influential scope.After this, identical with embodiment 2 and omit the description.
Therefore, do not increase the turn on angle of Defrost heater, just defrosting time can be shortened, during by suppressing to defrost, heat is to the intrusion of storeroom, the cooling of the storeroom after defrosting can be shortened, consumes power can be suppressed in addition, the side of refrigerator 1 and the temperature of separating part 57 can be kept, condensation when defrosting can be suppressed.
Figure 18 is the flow chart of the defrost control representing embodiment 5.In figure, step 512 is that refrigerant valve 61 is closed completely, interdicts the step of the refrigerant flow path to decompressor 58.Step 514 is that refrigerant valve 54 is opened to A-C side, opens wide the step of the refrigerant flow path to decompressor 58.Step 515 is that refrigerant valve 54 is opened to A-B side, opens wide the step of the refrigerant flow path of radiating tube 52c.Step 501 ~ step 511 is identical with the step 101 ~ step 111 of embodiment 1 and omit the description.
(embodiment 6)
Secondly, embodiment 6 is described.Further, the freeze cycle of embodiment 6 is identical with embodiment 2 and omit the description.
First, during defrosting to the refrigerator of embodiment 6, controlling organization is described.Figure 19 is the time diagram of the state of pressure fan, refrigerated storage temperature band room air door, cryogenic temperature band room air door, refrigerant valve in compressor in the defrosting of the refrigerator of the embodiment of the control representing illustrated embodiment 6, Defrost heater, case.
In Figure 19, horizontal axis representing time, the longitudinal axis represents the radiating tube 52c side of opening/closing, the refrigerant valve 54 of opening/closing, the cryogenic temperature band room air door of the energising ON/OFF of pressure fan in the running/stopping (ON/OFF) of the temperature of chiller temperature sensor 18, compressor, the energising/stopping (ON/OFF) of Defrost heater, case, refrigerated storage temperature band room air door, tube connector 55 side, the state of closing completely respectively.In figure, t1, t2, t3 of the longitudinal axis of the temperature of expression cooler are identical with t1, t2, t3 of embodiment 1 and omit the description.In addition, until compressor stops identical with embodiment 2 and omits the description.
After compressor stops, in the state be energized to pressure fan in case 9, cryogenic temperature band room air door 50 is closed, and refrigerated storage temperature band room air door 20 is opened, and starts to be energized to Defrost heater 22.Now, due in the state be energized to pressure fan in case 9, refrigerated storage temperature band room air door 20 is opened, thus can melt the frost be attached on cooler 7, and utilizes the white refrigerated compartment 2 be attached on cooler 7.The effect that cold-producing medium controls to produce is identical with embodiment 2 and omit the description.
Then, chiller temperature sensor 18 reaches predetermined temperature or Defrost heater 22 when being energized more than the scheduled time, stop being energized to pressure fan in case 9, cryogenic temperature band room air door 50 is opened, refrigerated storage temperature band room air door 20 is closed, refrigerant valve 54 is opened to tube connector 55 side, opens wide refrigerant flow path.It is identical with embodiment 2 and omit the description that cold-producing medium flows into the effect produced.
Then, when chiller temperature sensor 18 reaches the set point of temperature of defrosting end, stop the energising to Defrost heater 22, and refrigerant valve 54 is opened to radiating tube 52c side, cryogenic temperature band room air door 50 is closed, and refrigerated storage temperature band room air door is opened, and starts pressure fan energising in case, again start the running of compressor 24, return the running of common cold storage room.Further, when defrosting starts, make the simultaneously action of compressor 24, refrigerant valve 54, refrigerated storage temperature band room air door 20, cryogenic temperature band room air door 50, Defrost heater, but change the time difference and order is also passable not having in influential scope.
Therefore, do not increase the turn on angle of Defrost heater, just defrosting time can be shortened, during by suppressing to defrost, heat is to the intrusion of storeroom, the cooling of the storeroom after defrosting can be shortened, consumes power can be suppressed in addition, the side of refrigerator 1 and the temperature of separating part 57 can be kept, condensation when defrosting can be suppressed.
Figure 20 is the flow chart of the defrost control representing embodiment 6.In figure, step 616 is steps that cryogenic temperature band room air door 50 is closed, step 617 is steps that refrigerated storage temperature band room air door 20 is opened, step 618 makes the step that in case, pressure fan 9 stops, step 619 is steps that refrigerated storage temperature band room air door 20 is closed, step 620 is steps that cryogenic temperature band room air door 50 is opened, step 621 is steps that cryogenic temperature band room air door 50 is closed, step 622 is steps that refrigerated storage temperature band room air door 20 is opened, and step 623 is again to the step that pressure fan in case 9 is energized.Step 601 ~ step 615 is due to identical with the step 201 ~ step 215 of embodiment 1 and omit the description.
After step 604 stopped compressor, close cryogenic temperature band room air door 50 in step 616, open refrigerated storage temperature band room air door 20 in step 617.Now, owing to being energized to pressure fan in case 9, the frost be attached on cooler 7 melts, and meanwhile, utilizes the frost be attached on cooler 7, can refrigerated compartment 2.
In addition, after step 614 is opened refrigerant valve 54 to tube connector 55 side, stop pressure fan in case in step 618, close refrigerated storage temperature band room air door 20 in step 619, open cryogenic temperature band room air door 50 in step 620.
In addition, in step 610, after Defrost heater energising stops, closing cryogenic temperature band room air door 50 in step 621, open refrigerated storage temperature band room air door 20 in step 622, again pressure fan in case 9 is energized in step 623.Further, step 604, step 616, step 617, step 605 can simultaneously, also can not have influential time difference change order.Step 618 ~ step 620 too.Step 610, step 615, step 611, step 621 ~ step 623 too.
Like this, by possessing the energising of pressure fan in case, the opening and closing of refrigerated storage temperature band room air door 20, the opening and closing of cryogenic temperature band room air door 50, just can freezing defrosting time refrigerating chamber 2.Cold-producing medium controls the effect that produces due to identical with embodiment 2 and omit the description.Therefore, the turn on angle not increasing Defrost heater just can shorten defrosting time, can suppress consumes power.
Claims (8)
1. a refrigerator, has:
The compressor of compressed refrigerant;
The condenser of the cold-producing medium that condensation is compressed by above-mentioned compressor;
To the decompressor reduced pressure by the cold-producing medium of above-mentioned condenser condenses;
Make by the cooler of the post-decompression cold-producing medium evaporation of above-mentioned decompressor;
Heat the heating arrangements of above-mentioned cooler; And
The refrigerant flow path guiding mechanism of blocking refrigerant flow path,
The feature of above-mentioned refrigerator is,
When the defrosting running of above-mentioned cooler, above-mentioned refrigerant flow path guiding mechanism is utilized to interdict above-mentioned refrigerant flow path, above-mentioned compressor is stopped, when heating above-mentioned cooler with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, open wide above-mentioned refrigerant flow path.
2. a refrigerator, has:
The compressor of compressed refrigerant;
The condenser of the cold-producing medium that condensation is compressed by above-mentioned compressor;
To the decompressor reduced pressure by the cold-producing medium of above-mentioned condenser condenses;
Make by the cooler of the post-decompression cold-producing medium evaporation of above-mentioned decompressor; And
Heat the heating arrangements of above-mentioned cooler,
The feature of above-mentioned refrigerator is to possess:
First refrigerant flow path of heating to the front portion of the separating part that storeroom is separated;
Be set up in parallel with above-mentioned first refrigerant flow path, and connect the second refrigerant runner of above-mentioned condenser and above-mentioned decompressor; And
Be arranged on from above-mentioned condenser to above-mentioned first refrigerant flow path and second refrigerant flow channel entry point, the first refrigerant flow path guiding mechanism of blocking or switching the first refrigerant flow path and second refrigerant runner,
When the defrosting running of above-mentioned cooler, utilize above-mentioned first refrigerant flow path guiding mechanism above-mentioned first refrigerant flow path of blocking and second refrigerant runner, above-mentioned compressor is stopped, when heating above-mentioned cooler with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, open wide above-mentioned second refrigerant runner.
3. refrigerator according to claim 2, is characterized in that,
Have and be arranged on exporting between above-mentioned decompressor from above-mentioned first refrigerant flow path and second refrigerant runner, and interdict the second refrigerant runner guiding mechanism of above-mentioned first refrigerant flow path and second refrigerant runner,
Above-mentioned compressor is stopped, second refrigerant runner guiding mechanism is utilized to interdict cold-producing medium from above-mentioned first refrigerant flow path and second refrigerant runner to the inflow of above-mentioned cooler, when heating above-mentioned cooler with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, open wide cold-producing medium from above-mentioned first refrigerant flow path and second refrigerant runner to the inflow of above-mentioned cooler.
4. refrigerator according to claim 2, is characterized in that,
Make above-mentioned cold-producing medium inflow scheduled volume at unlimited above-mentioned second refrigerant runner after, open wide above-mentioned first refrigerant flow path, make the temperature on above-mentioned cooler top increase.
5. refrigerator according to claim 2, is characterized in that,
Check-valves or two-port valve is provided with in above-mentioned first refrigerant flow path outlet.
6. refrigerator according to claim 1 and 2, is characterized in that,
Make above-mentioned predetermined temperature near the melt temperature of frost.
7. refrigerator according to claim 1, is characterized in that,
Storeroom is arranged on refrigerated storage temperature band room in refrigerator main body and cryogenic temperature band room,
Possess: pressure fan in the case supplying the cold air generated by above-mentioned cooler to above-mentioned refrigerated storage temperature band room and above-mentioned cryogenic temperature band room;
Adjust the refrigerated storage temperature band room air door of the air conditioning quantity to the supply of above-mentioned refrigerated storage temperature band room; And
Adjust the cryogenic temperature band room air door of the air conditioning quantity to the supply of above-mentioned cryogenic temperature band room,
Make that pressure fan in above-mentioned case is in driving condition, above-mentioned compressor is in halted state, above-mentioned refrigerant flow path is in blocking state, above-mentioned heating arrangements is in driving condition, above-mentioned cryogenic temperature band room air door is in closed condition, above-mentioned refrigerated storage temperature band room air door is in open mode, utilize the latent heat of the frost of above-mentioned cooler to cool above-mentioned refrigerated storage temperature band room.
8. refrigerator according to claim 1, is characterized in that,
Storeroom is arranged on refrigerated storage temperature band room in refrigerator main body and cryogenic temperature band room,
Possess: pressure fan in the case supplying the cold air generated by above-mentioned cooler to above-mentioned refrigerated storage temperature band room and above-mentioned cryogenic temperature band room;
Adjust the refrigerated storage temperature band room air door of the air conditioning quantity to the supply of above-mentioned refrigerated storage temperature band room; And
Adjust the cryogenic temperature band room air door of the air conditioning quantity to the supply of above-mentioned cryogenic temperature band room,
Above-mentioned cooler is heated with above-mentioned heating arrangements, reaching after the scheduled time or above-mentioned cooler reach predetermined temperature, make that above-mentioned refrigerant flow path is in opening-wide state, above-mentioned cryogenic temperature band room air door is in open mode, above-mentioned refrigerated storage temperature band room air door is in closed condition, make pressure fan in above-mentioned case be in halted state.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011197823A JP5417397B2 (en) | 2011-09-12 | 2011-09-12 | refrigerator |
| JP2011-197823 | 2011-09-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102997535A CN102997535A (en) | 2013-03-27 |
| CN102997535B true CN102997535B (en) | 2015-05-20 |
Family
ID=47926432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210038762.1A Expired - Fee Related CN102997535B (en) | 2011-09-12 | 2012-02-17 | Refrigerator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5417397B2 (en) |
| KR (1) | KR101330936B1 (en) |
| CN (1) | CN102997535B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5992076B1 (en) * | 2015-07-23 | 2016-09-14 | 三菱電機株式会社 | Refrigeration cycle apparatus, refrigerator equipped with the refrigeration cycle apparatus, and defrosting method for refrigeration cycle apparatus |
| WO2017056212A1 (en) * | 2015-09-30 | 2017-04-06 | 三菱電機株式会社 | Refrigerator |
| WO2017179500A1 (en) * | 2016-04-13 | 2017-10-19 | パナソニックＩｐマネジメント株式会社 | Refrigerator and cooling system |
| CN106642921B (en) * | 2016-12-28 | 2019-02-15 | 青岛海尔股份有限公司 | Refrigeration control method and refrigerator for refrigerator |
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|---|---|---|---|---|
| CN1314987A (en) * | 1998-10-31 | 2001-09-26 | 大宇电子株式会社 | Defrost technology for refrigerator |
| JP2002174483A (en) * | 2000-12-08 | 2002-06-21 | Hoshizaki Electric Co Ltd | Refrigeration system |
| JP2003083667A (en) * | 2001-09-06 | 2003-03-19 | Mitsubishi Electric Corp | Controller for freezer/refrigerator |
| JP2003322446A (en) * | 2002-04-26 | 2003-11-14 | Hitachi Home & Life Solutions Inc | Refrigerator |
| CN1702411A (en) * | 2004-05-28 | 2005-11-30 | 株式会社东芝 | Refrigerator |
| CN101619916A (en) * | 2008-06-09 | 2010-01-06 | 日立空调·家用电器株式会社 | Ice refrigerator |
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| JPS5970187U (en) * | 1982-11-02 | 1984-05-12 | 松下冷機株式会社 | Refrigeration equipment |
| JPH04320782A (en) * | 1991-04-19 | 1992-11-11 | Sharp Corp | Refrigerator/cold store |
| JP2000121233A (en) * | 1998-10-20 | 2000-04-28 | Toshiba Corp | Freezer/refrigerator |
| JP3696064B2 (en) * | 2000-08-24 | 2005-09-14 | 株式会社東芝 | refrigerator |
| JP4341215B2 (en) * | 2002-08-26 | 2009-10-07 | 三菱電機株式会社 | Refrigerator, how to operate the refrigerator |
| JP2004092939A (en) * | 2002-08-29 | 2004-03-25 | Sanyo Electric Co Ltd | Refrigerator-freezer |
| KR100764267B1 (en) * | 2004-06-28 | 2007-10-05 | 엘지전자 주식회사 | Refrigerator, and method for controlling operation of the same |
-
2011
- 2011-09-12 JP JP2011197823A patent/JP5417397B2/en not_active Expired - Fee Related
-
2012
- 2012-02-17 KR KR1020120016228A patent/KR101330936B1/en not_active IP Right Cessation
- 2012-02-17 CN CN201210038762.1A patent/CN102997535B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314987A (en) * | 1998-10-31 | 2001-09-26 | 大宇电子株式会社 | Defrost technology for refrigerator |
| JP2002174483A (en) * | 2000-12-08 | 2002-06-21 | Hoshizaki Electric Co Ltd | Refrigeration system |
| JP2003083667A (en) * | 2001-09-06 | 2003-03-19 | Mitsubishi Electric Corp | Controller for freezer/refrigerator |
| JP2003322446A (en) * | 2002-04-26 | 2003-11-14 | Hitachi Home & Life Solutions Inc | Refrigerator |
| CN1702411A (en) * | 2004-05-28 | 2005-11-30 | 株式会社东芝 | Refrigerator |
| CN101619916A (en) * | 2008-06-09 | 2010-01-06 | 日立空调·家用电器株式会社 | Ice refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5417397B2 (en) | 2014-02-12 |
| CN102997535A (en) | 2013-03-27 |
| JP2013061084A (en) | 2013-04-04 |
| KR20130028841A (en) | 2013-03-20 |
| KR101330936B1 (en) | 2013-11-18 |
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