CN106052291A - Refrigeration and freezing equipment and control method thereof - Google Patents
Refrigeration and freezing equipment and control method thereof Download PDFInfo
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- CN106052291A CN106052291A CN201610365200.6A CN201610365200A CN106052291A CN 106052291 A CN106052291 A CN 106052291A CN 201610365200 A CN201610365200 A CN 201610365200A CN 106052291 A CN106052291 A CN 106052291A
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- nitrogen
- air compressor
- compressor machine
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- temperature
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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
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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
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/16—Sensors measuring the temperature of products
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- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides refrigeration and freezing equipment and a control method thereof. The control method of the refrigeration and freezing equipment comprises the steps that the concentration of nitrogen gas in a sealed space is detected; whether the concentration of the nitrogen gas is larger than the preset first concentration threshold value or not is judged; if yes, an air compressor is controlled to continuously work so that a nitrogen-oxygen separator can continuously generate nitrogen gas; and if not, the air compressor is controlled to work in the intermittent mode of starting the first preset time and stopping the second preset time. When a concentration sensor detects that the concentration of the nitrogen gas in the sealed space is smaller than the first concentration threshold value, the air compressor works in the intermittent mode of stopping the second preset time after the first preset time is started; natural cooling and temperature lowering are conducted through the second preset time so that temperature rising speed of the air compressor can be decreased, the air compressor is prevented from being damaged by the high temperature, and normal working of a nitrogen-making device is ensured; and meanwhile, the situation that the temperature of the sealed space is raised, and food preservation is affected due to the fact that the temperature of the nitrogen gas generated through the nitrogen-making device is too high is prevented.
Description
Technical field
The present invention relates to article field of storage, particularly to a kind of refrigerating equipment and control method thereof.
Background technology
Some current refrigerating equipment, in order to improve the fresh-keeping effect of self, can install nitrogen-making device therein,
And room is filled with nitrogen to suppress aerobic respiration and the growth of microorganism of food self between its inside.
The nitrogen-making device of current refrigerating equipment typically arranges a fixing nitrogen time processed by experience, and nitrogen processed fills
Put nitrogen the most processed within the fixing nitrogen time processed and be promoted to aimed concn with the nitrogen gas concn by a room, but, set by experience
The nitrogen time processed put is the most not accurate enough, and if nitrogen-making device work for a long time, its operating temperature can be caused rapidly
Rise, so can affect its normal use and also can reduce its service life.Meanwhile, if nitrogen-making device own temperature is too high, its
The nitrogen temperature produced also can be too high, causes compartment temperature to rise, affects food fresh-keeping.
Summary of the invention
In view of the above problems, it is proposed that the present invention in case provide one overcome the problems referred to above or at least in part solve on
State refrigerating equipment and the control method thereof of problem.
The present invention one further objective is that the nitrogen-making device ensureing refrigerating equipment normally works.
The present invention one further objective is that the functional reliability of refrigerating equipment to be improved.
Another of the present invention further objective is that the operating noise reducing refrigerating equipment.
According to an aspect of the present invention, the invention provides the control method of a kind of refrigerating equipment, refrigerating
Between the storing of equipment, chamber interior is provided with sealing space, and refrigerating equipment is provided with for sealing space offer nitrogen
Nitrogen-making device, and nitrogen-making device includes air compressor machine and nitrogen oxygen separator, and wherein air compressor machine is controllably to nitrogen oxygen separator
Thering is provided compressed air, so that nitrogen oxygen separator uses compressed air to prepare nitrogen, and control method includes: detection seals space
Internal nitrogen gas concn；Judge that whether nitrogen gas concn is more than the first concentration threshold preset；If so, air compressor machine continuous firing is controlled
So that nitrogen oxygen separator persistently produces nitrogen, until nitrogen gas concn reaches the second default concentration threshold, the second concentration threshold
More than the first concentration threshold；And if it is not, control air compressor machine to open the first Preset Time so that nitrogen oxygen separator is when this is default
In prepare nitrogen, and close after air compressor machine opens the first Preset Time, and re-execute inspection after being spaced the second Preset Time
Survey the step of the concentration sealing interior volume nitrogen.
Alternatively, also include during controlling air compressor machine continuous firing: the operating temperature of detection air compressor machine；At pneumatics
The operating temperature of machine, more than in the case of the first preset temperature, controls air compressor machine and closes after starting the 3rd Preset Time, and
After closing the 4th Preset Time, detection seals the concentration of interior volume nitrogen again；And if it is not, perform detection and seal in space
The step of the concentration of portion's nitrogen.
Alternatively, also include before the step of the concentration sealing interior volume nitrogen in detection: detection refrigerating equipment
Refrigeration compressor whether open；If so, keep air compressor machine to close, and perform to detect after refrigeration compressor cuts out to seal space
The step of the concentration of internal nitrogen.
Alternatively, after nitrogen gas concn reaches the second concentration threshold, close air compressor machine, reach the 5th in air compressor machine closedown pre-
If re-executing the step that detection seals the nitrogen gas concn of interior volume after the time.
Alternatively, carry out the process of nitrogen processed and also include opening air compressor machine: detect the storing temperature of room between storing；Judge storage
Whether thing temperature is more than the second preset temperature；If so, close air compressor machine, be then turned on refrigeration compressor.
According to another aspect of the present invention, additionally provide a kind of refrigerating equipment, including: seal box, it is arranged at cold
Hiding chamber interior between the storing of freezing equipment, seal box limits sealing space；Nitrogen gas concn sensor, is arranged at sealing space
In, it is configured to detection and seals the nitrogen gas concn in space；Nitrogen-making device, is configured to sealing space offer nitrogen, and it includes sky
Press and nitrogen oxygen separator, air compressor machine controllably provides compressed air to nitrogen oxygen separator, so that nitrogen oxygen separator uses compression
Air-making is for nitrogen；Air compressor machine is configured to, in the case of nitrogen gas concn is more than the first concentration threshold preset, and continuous firing
So that nitrogen oxygen separator persistently produces nitrogen, until nitrogen gas concn reaches the second default concentration threshold；Little at nitrogen gas concn
In the case of the first concentration threshold, according to closing the intermittent work mode of the second Preset Time after opening the first Preset Time,
Second concentration threshold is more than the first concentration threshold；And nitrogen gas concn sensor is configured to, close second at air compressor machine every time
After Preset Time, detection seals the concentration of interior volume nitrogen again.
Alternatively, above-mentioned refrigerating equipment also includes: air compressor machine temperature sensor, is configured to detect the work of air compressor machine
Temperature；And air compressor machine is configured to, during air compressor machine continuous firing, operating temperature is more than the feelings of the first preset temperature
Under condition, according to the intermittent work mode closing the 4th Preset Time after opening the 3rd Preset Time；And nitrogen gas concn sensor
Being configured to, after air compressor machine closes the 4th Preset Time every time, detection seals the concentration of interior volume nitrogen again.
Alternatively, above-mentioned refrigerating equipment also includes: refrigeration detection device, is configured to detect the system of refrigerating equipment
Whether cold compressor opens；And air compressor machine is configured to, in the case of refrigeration compressor is opened, air compressor machine is kept to close；
Nitrogen gas concn sensor is configured to, and after refrigeration compressor cuts out, detection seals the concentration of interior volume nitrogen again.
Alternatively, air compressor machine is configured to, and closes after nitrogen gas concn reaches the second concentration threshold；And nitrogen gas concn passes
Sensor is configured to, and after air compressor machine is closed and arrived the 5th Preset Time, detection seals the concentration of interior volume nitrogen again.
Alternatively, above-mentioned refrigerating equipment also includes: compartment temperature sensor, is configured to detect the storing of room between storing
Temperature；And air compressor machine is configured to, close in the case of storing temperature is more than the second preset temperature；Refrigeration compressor is also joined
It is set to, in the case of storing temperature is more than the second preset temperature, waits that air compressor machine is opened after closing.
The invention provides the control method of a kind of refrigerating equipment, indoor setting between the storing of this refrigerating equipment
Having sealing space, nitrogen-making device is filled with nitrogen to strengthen its fresh-keeping effect in sealing space.Above-mentioned control method includes: detection
Seal the nitrogen gas concn of interior volume；Judge that whether nitrogen gas concn is more than the first concentration threshold preset；If so, air compressor machine is controlled
Continuous firing is so that nitrogen oxygen separator persistently produces nitrogen, if it is not, control air compressor machine to open the first Preset Time, to close the
The intermittent work mode of two Preset Times.At the sealing space nitrogen gas concn that concentration sensor detects higher than the first concentration threshold
Time, illustrating to seal the nitrogen in space close to saturated, nitrogen gas concn can be promoted to target rich by nitrogen-making device at short notice
Degree threshold value, in this case, air compressor machine can be with continuous firing until stopping after nitrogen gas concn is promoted to aimed concn threshold value again
Machine, air compressor machine is short due to continuous working period, and temperature will not rise too high.At the sealing space nitrogen that concentration sensor detects
When concentration is less than the first concentration threshold, illustrate that nitrogen-making device needs the long period that nitrogen gas concn could be promoted to the second concentration threshold
Value, in this case, if air compressor machine long lasting for work its temperature will be caused to rise too high, now, air compressor machine according to
Close the intermittent work mode of the second Preset Time after opening the first Preset Time, utilize the second Preset Time natural cooling fall
Temperature, to slow down the rate of rise in temperature of air compressor machine, prevents high temperature from causing damage air compressor machine, it is ensured that the normal work of nitrogen-making device
Make, prevent nitrogen-making device from producing nitrogen temperature too high simultaneously, cause sealing space temperature to rise, affect food fresh-keeping, thus carry
The high functional reliability of nitrogen-making device.
It addition, the method for the present invention closes air compressor machine after nitrogen gas concn reaches the second concentration threshold.By detection nitrogen
Concentration formulates the nitrogen time processed, it is possible to accurately control the operating time of the nitrogen-making device of refrigerating equipment.Thus when preventing nitrogen processed
Between long, waste the energy, or prevent the nitrogen time processed too short, it is impossible to reach to meet the nitrogen gas concn of food fresh-keeping.
Further, the control method of the present invention was also wrapped before the step of the concentration of detection sealing interior volume nitrogen
Include: whether the refrigeration compressor of detection refrigerating equipment is opened；If so, air compressor machine is kept to close, and in refrigerant compression office
The step that detection seals the concentration of interior volume nitrogen is performed after closing.The control method of the refrigerating equipment of the present invention does not allows
Refrigeration compressor and air compressor machine ran in the same time.When refrigeration detection device detects that refrigeration compressor is opened, keep sky
The closed mode of press, reduces the operating noise of refrigerating equipment.
According to below in conjunction with the accompanying drawing detailed description to the specific embodiment of the invention, those skilled in the art will be brighter
Above-mentioned and other purposes, advantage and the feature of the present invention.
Accompanying drawing explanation
Describe some specific embodiments of the present invention the most by way of example, and not by way of limitation in detail.
Reference identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these
Accompanying drawing is not necessarily drawn to scale.In accompanying drawing:
Fig. 1 is refrigerating equipment schematic diagram according to an embodiment of the invention；
Fig. 2 is the schematic diagram of refrigerating equipment in accordance with another embodiment of the present invention；
Fig. 3 is the schematic diagram of the control method of refrigerating equipment according to an embodiment of the invention；
Fig. 4 is the flow chart of the control method of refrigerating equipment according to an embodiment of the invention；And
Fig. 5 is the flow chart of the control method of refrigerating equipment in accordance with another embodiment of the present invention.
Detailed description of the invention
The present embodiment provide firstly a kind of refrigerating equipment, and Fig. 1 is that cold preservation is cold according to an embodiment of the invention
Freeze equipment schematic diagram.This refrigerating equipment can be refrigerator, refrigerator-freezer etc..
The refrigerating equipment of the present embodiment includes: seal box 100, nitrogen gas concn sensor 300 and nitrogen-making device
200.Between the storing of the refrigerating equipment of the present embodiment, chamber interior is provided with seal box 100, and seal box 100 limits sealing
Space, this sealing space needs the most fresh-keeping food for storing.Refrigerating device interior is provided with nitrogen-making device
200, provide nitrogen to sealing space, so that the nitrogen gas concn sealed in space reaches aimed concn threshold value, aimed concn threshold
Value is far above the nitrogen gas concn value in air, and therefore, in sealing space, oxygen concentration is far below air level, it is possible to suppression food
The aerobic respiration of self and the growth of microorganism, beneficially food fresh-keeping.Nitrogen-making device 200 includes that air compressor machine 210 and nitrogen oxygen divide
From device 220, air compressor machine 210 controllably provides compressed air to nitrogen oxygen separator 220, so that nitrogen oxygen separator 220 uses compression
Air-making is for nitrogen.The nitrogen-making device 200 of the present embodiment utilizes PSA method for preparing nitrogen, is removed by oxygen in air thus produces pure
Clean nitrogen.Pressure-variable adsorption PSA (Pressure Swing Adsorption) is the mainstream technology producing gas at present.
Pressure-variable adsorption specifically refers to, in the case of temperature-resistant, pressurize mixed gas, and utilizes adsorbent unnecessary
Foreign gas thus obtain the purest pure gas, then with reducing pressure (evacuation) or in the method for normal pressure makes adsorbent
Foreign gas desorbs, so that adsorbent is carried out secondary utilization.The Oxygen Adsorption agent of the present embodiment is arranged at nitrogen oxygen separator
220 is internal, and nitrogen oxygen separator 220, with air as raw material, uses pressure swing adsorption, utilizes adsorbent to oxygen and the selectivity of nitrogen
Absorption, it is achieved the nitrogen in air and oxygen separating, thus produce pure nitrogen.Nitrogen gas concn sensing it is provided with in sealing space
Device 300, for detecting the nitrogen gas concn sealed in space.In some optional embodiments, it is possible to use oxygen concentration passes
Sensor detection seals oxygen concentration in space, calculates nitrogen gas concn further according to oxygen concentration.
The nitrogen gas concn that the refrigerating equipment of the present embodiment detects according to nitrogen gas concn sensor 300 determines air compressor machine
The working method of 210.Above-mentioned air compressor machine 210 nitrogen gas concn more than preset the first concentration threshold in the case of, continuous firing
So that nitrogen oxygen separator 220 persistently produces nitrogen, until nitrogen gas concn reaches the second default concentration threshold；At nitrogen gas concn
In the case of the first concentration threshold, according to the intermittent mode work closing the second Preset Time after opening the first Preset Time
Making, the second concentration threshold is more than the first concentration threshold.And nitrogen gas concn sensor 300 cuts out second at air compressor machine 210 every time
After Preset Time, detection seals the concentration of interior volume nitrogen again.Above-mentioned second concentration threshold is filled with nitrogen for sealing interior volume
The aimed concn threshold value of gas, can be 95% to 100%, the most preferably 99%；Above-mentioned first concentration threshold connects
It is near and less than the second concentration threshold, so that nitrogen-making device 200 can will seal the nitrogen gas concn in space by the at short notice
One concentration threshold is promoted to the second concentration threshold, and the first concentration threshold can be 83% to 88%, is preferably in the present embodiment
85%.
When the sealing space nitrogen gas concn that concentration sensor detects is higher than the first concentration threshold, illustrate to seal in space
Nitrogen close to saturated, nitrogen gas concn can be promoted to the second concentration threshold, in this feelings by nitrogen-making device 200 at short notice
Under condition, air compressor machine 210 can be with continuous firing until shutting down after nitrogen gas concn is promoted to the second concentration threshold again, air compressor machine 210
Owing to continuous working period is short, temperature will not rise too high.It is less than at the sealing space nitrogen gas concn that concentration sensor detects
During the first concentration threshold, illustrate that nitrogen-making device 200 needs the long period nitrogen gas concn could be promoted to the second concentration threshold,
In this case, if air compressor machine 210 continuous firing will cause its temperature to rise too high, in this case, air compressor machine 210 is pressed
According to closing the intermittent work mode of the second Preset Time after opening the first Preset Time, utilize the second Preset Time natural cooling fall
Temperature, to slow down the rate of rise in temperature of air compressor machine 210.Above-mentioned first Preset Time can be that air compressor machine 210 is at continuous firing shape
Being risen to excessive temperature required time by normal temperature under state, the second Preset Time can be that air compressor machine 210 is cold by excessive temperature
But normal temperature required time is dropped to.Such as air compressor machine 210 can use work 10min, suspends the endless form work of 5min
Make, it would however also be possible to employ work 5min, suspend the endless form work of 10min, in certain embodiments, above-mentioned first Preset Time
Can be identical with the second Preset Time, such as air compressor machine 210 can use work 10min, suspends the side of the circulation work of 10min
Formula.
Nitrogen gas concn sensor 300, under air compressor machine 210 intermittently used state, cuts out second at air compressor machine 210 and presets
After time, detection seals the concentration of interior volume nitrogen again, to redefine the working method of air compressor machine 210.It addition, at this
In embodiment, air compressor machine 210 also closes to save the energy after nitrogen gas concn reaches the second concentration threshold；And nitrogen gas concn passes
Sensor 300 also detects the concentration sealing interior volume nitrogen after air compressor machine 210 is closed and arrived the 5th Preset Time again.Due to
User opens the reason such as seal box 100 or natural leakage, and the nitrogen gas concn sealed in space can decline, in time therefore at sky
Press 210 cuts out after arriving the 5th Preset Time and again detects the concentration sealing interior volume nitrogen, to redefine air compressor machine
The working method of 210.Above-mentioned 5th Preset Time can be according to sealing the nitrogen gas concn in space by under the second concentration threshold nature
The required time dropping to affect the concentration of food fresh-keeping is set.Control to air compressor machine 210 is based on seal box 100 above
In the case of not opening, if seal box 100 is opened, then wait that it detects after closing again and seal the dense of interior volume nitrogen
Degree.
Fig. 2 is the schematic diagram of refrigerating equipment in accordance with another embodiment of the present invention.The refrigerating of the present embodiment
Equipment also includes: air compressor machine temperature sensor 400.
Air compressor machine temperature sensor 400 detects the operating temperature of air compressor machine 210；And air compressor machine 210 is in its continuous firing
During, operating temperature, more than in the case of the first preset temperature, is preset according to closing the 4th after opening the 3rd Preset Time
The intermittent work mode of time.Nitrogen gas concn sensor 300 detects after air compressor machine 210 closes the 4th Preset Time every time again
Seal the concentration of interior volume nitrogen.Above-mentioned first preset temperature is that air compressor machine 210 is owing to long lasting for work, temperature rises
To the temperature affected when it normally works.Can be 45 to 55 DEG C in the present embodiment, for example, 50 DEG C.
Refrigerating equipment in the present embodiment can also determine air compressor machine 210 according to the temperature of air compressor machine 210 self
Working method, to prevent pneumatics temperature from rising too high.During air compressor machine 210 continuous firing, its temperature the most constantly raises,
Easily occur air compressor machine 210 temperature rise too high thus affect its use situation.Therefore, in air compressor machine 210 continuous firing
During, air compressor machine temperature sensor 400 detects the operating temperature of air compressor machine 210, presets warm more than first in its operating temperature
In the case of degree, illustrate air compressor machine 210 to need suitably and lower the temperature, changed into step working method, pre-in work the 3rd
If closing the 4th Preset Time after the time, and utilize the 4th Preset Time natural cooling cooling, to prevent in air compressor machine 210 temperature
Rise too high.Above-mentioned 3rd Preset Time can be risen to too high according to air compressor machine 210 under continuous firing state by normal temperature
Time needed for temperature sets, and the 4th Preset Time can be dropped to positive room temperature according to air compressor machine 210 by excessive temperature cooling
Degree required time sets, and such as air compressor machine 210 can use work 10min, suspends the endless form work of 5min, it is also possible to
Use work 5min, suspend the endless form work of 10min, in certain embodiments, above-mentioned 3rd Preset Time and the 4th pre-
If the time can be identical, such as air compressor machine 210 can use work 10min, suspends the mode of the circulation work of 10min.
Nitrogen gas concn sensor 300, under air compressor machine 210 intermittently used state, cuts out the 4th at air compressor machine 210 and presets
After time, detection seals the concentration of interior volume nitrogen again, to redefine the working method of air compressor machine 210.
Also including of the present embodiment refrigerating equipment: refrigeration detection device 600.Refrigeration detection device 600 detects cold preservation
Whether the refrigeration compressor 500 of freezing equipment is opened.Refrigeration detection device 600 can be by detection refrigerating equipment master control borad
Status indicator determine whether refrigeration compressor 500 is opened.
Air compressor machine 210, in the case of refrigeration compressor 500 is opened, keeps air compressor machine 210 to close；Nitrogen gas concn sensor
300 detect the concentration sealing interior volume nitrogen after refrigeration compressor 500 cuts out again.
The refrigerating equipment of the present embodiment loads for the energy consumption reducing self, controls refrigeration compressor 500 and pneumatics
Machine 210 runs at different time.When refrigeration detection device 600 detects that refrigeration compressor 500 is opened, keep air compressor machine 210
Closed mode, in this case, it is not necessary to detection nitrogen gas concn and the operating temperature of air compressor machine 210.At refrigeration detection dress
Put 600 determine that refrigeration compressor 500 has been switched off after, nitrogen gas concn sensor 300 again detect seal interior volume nitrogen dense
Degree.
The refrigerating equipment of the present embodiment also includes compartment temperature sensor.Room between compartment temperature sensor detection storing
Storing temperature；And air compressor machine 210 is closed in the case of storing temperature is more than the second preset temperature；Refrigeration compressor 500
It is configured to, in the case of storing temperature is more than the second preset temperature, waits that air compressor machine 210 is opened after closing.Above-mentioned second
Preset temperature is that between storing, room allows the peak reached, and when storing temperature is more than the second preset temperature, can affect food
Fresh-keeping effect.The refrigerating equipment of the present embodiment prepares to open refrigeration in the case of storing temperature is more than the second preset temperature
Compressor 500 is to reduce storing temperature, before this, closes air compressor machine 210 in advance, to prevent refrigeration compressor 500 and pneumatics
Machine 210 is opened simultaneously and is made refrigerating equipment exceed the load of its energy consumption.
Present invention also offers the control method of a kind of refrigerating equipment.Chamber interior between the storing of this refrigerating equipment
It is provided with sealing space, and refrigerating equipment is provided with the nitrogen-making device for providing nitrogen to sealing space, and make
Nitrogen device includes air compressor machine and nitrogen oxygen separator, and wherein air compressor machine controllably provides compressed air to nitrogen oxygen separator, so that
Nitrogen oxygen separator uses compressed air to prepare nitrogen.Fig. 3 is the control of refrigerating equipment according to an embodiment of the invention
The schematic diagram of method.
Step S302, detection seals the nitrogen gas concn of interior volume.Utilize the nitrogen gas concn sensor sealing interior volume
300 detections seal the nitrogen gas concn of interior volume.
Step S304, it is judged that whether nitrogen gas concn is more than the first concentration threshold preset.Above-mentioned first concentration threshold is close
And less than sealing the aimed concn threshold value that nitrogen is filled with in space, so that nitrogen-making device 200 can at short notice will sealing
The nitrogen gas concn in space is promoted to aimed concn threshold value by the first concentration threshold, and the first concentration threshold can be 83% to 88%,
It is preferably 85% in the present embodiment.
Step S306, if the judged result of step S304 is yes, controls air compressor machine 210 continuous firing so that nitrogen oxygen separating
Device 220 persistently produces nitrogen.Until nitrogen gas concn reaches the second default concentration threshold, the second concentration threshold is more than the first concentration
Threshold value.When the sealing space nitrogen gas concn that concentration sensor detects is higher than the first concentration threshold, illustrate to seal in space
Nitrogen is close to saturated, and nitrogen gas concn can be promoted to the second concentration threshold, in this situation by nitrogen-making device 200 at short notice
Under, air compressor machine 210 can with continuous firing until shutting down again after nitrogen gas concn is promoted to the second concentration threshold, air compressor machine 210 by
Short in continuous working period, temperature will not rise too high.Above-mentioned second concentration threshold is to seal interior volume to be filled with the mesh of nitrogen
Mark concentration threshold, can be 95% to 100%, the most preferably 99%.
Step S308, if the judged result of step S304 is no, controls air compressor machine 210 and opens the first Preset Time so that
Nitrogen oxygen separator 220 prepares nitrogen in this Preset Time, and closes after air compressor machine 210 opens the first Preset Time, and
The step that detection seals the concentration of interior volume nitrogen is re-executed after the second Preset Time.Detect at concentration sensor
When sealing space nitrogen gas concn less than the first concentration threshold, illustrate that nitrogen-making device 200 needs the long period could be by nitrogen gas concn
It is promoted to the second concentration threshold, in this case, if air compressor machine 210 continuous firing will cause its temperature to rise too high, empty
Press 210, according to cutting out the intermittent work mode of the second Preset Time after opening the first Preset Time, utilizes the second Preset Time
Natural cooling is lowered the temperature, to slow down the rate of rise in temperature of air compressor machine 210.Above-mentioned first Preset Time can be according to air compressor machine 210
The time risen to needed for excessive temperature by normal temperature under continuous firing state sets, and the second Preset Time can basis
Air compressor machine 210 is dropped to normal temperature required time by excessive temperature cooling and sets, and such as air compressor machine 210 can use work
10min, suspends the endless form work of 5min, it would however also be possible to employ work 5min, suspends the endless form work of 10min, one
In a little embodiments, above-mentioned first Preset Time and the second Preset Time can be identical, and such as air compressor machine 210 can use work
10min, suspends the mode of the circulation work of 10min.
Fig. 4 is the flow chart of the control method of refrigerating equipment according to an embodiment of the invention.This control method
Perform following steps successively:
Step S402, whether the refrigeration compressor 500 of detection refrigerating equipment is opened.
Step S404, if the judged result of step S402 is yes, then keeps air compressor machine 210 to close, waits refrigeration compressor
500 close.The refrigerating equipment of the present embodiment loads for the energy consumption reducing self, controls refrigeration compressor 500 and pneumatics
Machine 210 runs at different time.When refrigeration detection device 600 detects that refrigeration compressor 500 is opened, keep air compressor machine 210
Closed mode, in this case, it is not necessary to detection nitrogen gas concn and the operating temperature of air compressor machine 210.At refrigeration detection dress
Put 600 determine that refrigeration compressor 500 has been switched off after, nitrogen gas concn sensor 300 again detect seal interior volume nitrogen dense
Degree.
Step S406, if the judged result of step S402 is no, detection seals the nitrogen gas concn of interior volume.
Step S408, it is judged that whether nitrogen gas concn is more than the first concentration threshold preset.Above-mentioned first concentration threshold is close
And less than sealing the aimed concn threshold value that nitrogen is filled with in space, so that nitrogen-making device 200 can at short notice will sealing
The nitrogen gas concn in space is promoted to aimed concn threshold value by the first concentration threshold, and the first concentration threshold can be 83% to 88%,
It is preferably 85% in the present embodiment.
Step S410, if the judged result of step S408 is yes, controls air compressor machine 210 continuous firing so that nitrogen oxygen separating
Device 220 persistently produces nitrogen.When the sealing space nitrogen gas concn that concentration sensor detects is higher than the first concentration threshold, explanation
Nitrogen in sealing space is close to saturated, and nitrogen gas concn can be promoted to the second concentration threshold by nitrogen-making device 200 at short notice
Value, in this case, air compressor machine 210 can be with continuous firing until stopping after nitrogen gas concn is promoted to the second concentration threshold again
Machine, air compressor machine 210 is short due to continuous working period, and temperature will not rise too high.
Step S412, if the judged result of step S408 is no, controls air compressor machine 210 and opens the first Preset Time so that
Nitrogen oxygen separator 220 prepares nitrogen in this Preset Time, and closes after air compressor machine 210 opens the first Preset Time, and
The step that detection seals the concentration of interior volume nitrogen is re-executed after the second Preset Time.Detect at concentration sensor
When sealing space nitrogen gas concn less than the first concentration threshold, illustrate that nitrogen-making device 200 needs the long period could be by nitrogen gas concn
It is promoted to the second concentration threshold, in this case, if air compressor machine 210 continuous firing will cause its temperature to rise too high,
In this case, air compressor machine 210, according to closing the intermittent work mode of the second Preset Time after opening the first Preset Time, utilizes
Second Preset Time natural cooling cooling, to slow down the rate of rise in temperature of air compressor machine 210.Above-mentioned first Preset Time can be
Air compressor machine 210 is risen to excessive temperature required time by normal temperature under continuous firing state, and the second Preset Time can be
Air compressor machine 210 is dropped to normal temperature required time, above-mentioned first Preset Time and the second Preset Time by excessive temperature cooling
Can be identical, the most both preferably 10min.After air compressor machine 210 suspends closedown every time, both after the second Preset Time
Re-execute the step of concentration of detection sealing interior volume nitrogen to redefine the working method of air compressor machine 210.
Step S414, the operating temperature of detection air compressor machine 210.
Step S416, it is judged that whether the temperature of air compressor machine 210 is more than the first preset temperature.Refrigerating in the present embodiment
Equipment can also determine the working method of air compressor machine 210 according to the temperature of air compressor machine 210 self, to prevent pneumatics temperature from rising
High.During air compressor machine 210 continuous firing, its temperature the most constantly raises, and easily occurs that air compressor machine 210 temperature rises too high
Thus affect its situation about using.Therefore during air compressor machine 210 continuous firing, its operating temperature is detected.
Step S418, if the judged result of step S416 is yes, controls air compressor machine 210 and closes after starting the 3rd Preset Time
Close, and detection seals the concentration of interior volume nitrogen again after closing the 4th Preset Time.In air compressor machine 210 continuous firing
During, air compressor machine temperature sensor 400 detects the operating temperature of air compressor machine 210, presets warm more than first in its operating temperature
In the case of degree, illustrate air compressor machine 210 to need suitably and lower the temperature, changed into step working method, pre-in work the 3rd
If closing the 4th Preset Time after the time, and utilize the 4th Preset Time natural cooling cooling, to prevent in air compressor machine 210 temperature
Rise too high.Above-mentioned 3rd Preset Time can be risen to too high according to air compressor machine 210 under continuous firing state by normal temperature
Time needed for temperature sets, and the 4th Preset Time can be dropped to positive room temperature according to air compressor machine 210 by excessive temperature cooling
Degree required time sets, and such as air compressor machine 210 can use work 10min, suspends the endless form work of 5min, it is also possible to
Use work 5min, suspend the endless form work of 10min, in certain embodiments, above-mentioned 3rd Preset Time and the 4th pre-
If the time can be identical, such as air compressor machine 210 can use work 10min, suspends the mode of the circulation work of 10min.
Step S420, if the judged result of step S416 is no, whether detection nitrogen gas concn is more than the second concentration preset
Threshold value.If judged result is no, seals the nitrogen gas concn miss the mark concentration threshold in space, in this case, persistently open
Open air compressor machine 210, and be filled with nitrogen to sealing space.
Step S422, if the judged result of step S420 is yes, closes air compressor machine 210, closes at air compressor machine 210 and reaches the
The step that detection seals the nitrogen gas concn of interior volume is re-executed after five Preset Times.Due to user open seal box 100 or
The reasons such as person's nature leakage, the nitrogen gas concn sealed in space can decline in time, therefore closes at air compressor machine 210 and arrives the 5th
After Preset Time, detection seals the concentration of interior volume nitrogen again, to redefine the working method of air compressor machine 210.Above-mentioned
Five Preset Times can be dropped to by the second concentration threshold naturally according to the nitrogen gas concn sealing space affects the dense of food fresh-keeping
The required time of degree is set.Control to air compressor machine 210 is based in the case of seal box 100 do not opens above, if
Seal box 100 is opened, then wait that it detects, after closing, the concentration sealing interior volume nitrogen again.
Fig. 5 is the flow chart of the control method of refrigerating equipment in accordance with another embodiment of the present invention.This controlling party
Method performs following steps successively opening during air compressor machine carries out nitrogen processed:
Step S502, the storing temperature of room between detection storing.
Step S504, whether detection storing temperature is more than the second preset temperature.Above-mentioned second preset temperature is for allowing storing
The peak that temperature reaches, when storing temperature is more than the second preset temperature, can affect the fresh-keeping effect of food.If judged result
Being no, certain interval of time detects the storing temperature of room between storing again.
Step S506, if the testing result of step S504 is yes, closes air compressor machine 210, is then turned on refrigeration compressor
500.The refrigerating equipment of the present embodiment prepares to open refrigerant compression in the case of storing temperature is more than the second preset temperature
Machine 500 is to reduce storing temperature, before this, closes air compressor machine 210 in advance, to prevent refrigeration compressor 500 and air compressor machine 210
Open simultaneously and make refrigerating equipment exceed the load of its energy consumption.If the testing result of step S504 is no, certain interval of time weight
The storing temperature of room between new detection storing.
Present embodiments provide the control method of a kind of refrigerating equipment, indoor setting between the storing of refrigerating equipment
Having sealing space, nitrogen-making device 200 is filled with nitrogen to strengthen its fresh-keeping effect in sealing space.This control method includes: inspection
Survey the nitrogen gas concn sealing interior volume；Judge that whether nitrogen gas concn is more than the first concentration threshold preset；If so, pneumatics is controlled
Machine 210 continuous firing, so that nitrogen oxygen separator 220 persistently produces nitrogen, is preset if it is not, control air compressor machine 210 to open first
Time, close the intermittent work mode of the second Preset Time.It is higher than at the sealing space nitrogen gas concn that concentration sensor detects
During the first concentration threshold, illustrating to seal the nitrogen in space close to saturated, nitrogen-making device 200 can be dense by nitrogen at short notice
Degree is promoted to aimed concn threshold value, and in this case, air compressor machine 210 can be with continuous firing until being promoted to mesh by nitrogen gas concn
Shutting down after mark concentration threshold, air compressor machine 210 is short due to continuous working period, and temperature will not rise too high.At concentration sensor
When the sealing space nitrogen gas concn detected is less than the first concentration threshold, illustrate that nitrogen-making device 200 needs the long period could be by
Nitrogen gas concn is promoted to the second concentration threshold, in this case, if air compressor machine 210 continuous firing will cause its temperature to rise
Too high, air compressor machine 210, according to closing the intermittent work mode of the second Preset Time after opening the first Preset Time, utilizes second pre-
If time natural cooling is lowered the temperature, to slow down the rate of rise in temperature of air compressor machine 210, prevent high temperature from air compressor machine 210 being caused damage,
Ensure that nitrogen-making device 200 normally works, prevent nitrogen-making device 200 from producing nitrogen temperature too high simultaneously, cause sealing space temperature
Degree rises, and affects food fresh-keeping, thus improves the functional reliability of nitrogen-making device 200.
It addition, the method for the present embodiment closes air compressor machine 210 after nitrogen gas concn reaches the second concentration threshold.By detection
Nitrogen gas concn formulates the nitrogen time processed, it is possible to accurately control the operating time of the nitrogen-making device 200 of refrigerating equipment.Thus prevent
Nitrogen overlong time processed, wastes the energy, or prevents nitrogen time processed too short, it is impossible to reach to meet food fresh-keeping nitrogen gas concn will
Ask.
Further, the control method of the present embodiment was also wrapped before the step of the concentration of detection sealing interior volume nitrogen
Include: whether the refrigeration compressor 500 of detection refrigerating equipment is opened；If so, air compressor machine 210 is kept to close, and in refrigeration pressure
Contracting machine 500 performs the step that detection seals the concentration of interior volume nitrogen after cutting out.The refrigerating equipment of the present embodiment controls
Refrigeration compressor 500 and air compressor machine 210 run at different time.Detect that refrigeration compressor 500 leaves at refrigeration detection device 600
Qi Shi, keeps the closed mode of air compressor machine 210, reduces the operating noise of refrigerating equipment.
So far, although those skilled in the art will appreciate that the multiple of the most detailed present invention of illustrate and describing show
Example embodiment, but, without departing from the spirit and scope of the present invention, still can be direct according to present disclosure
Determine or derive other variations or modifications of many meeting the principle of the invention.Therefore, the scope of the present invention is it is understood that and recognize
It is set to and covers other variations or modifications all these.
Claims (10)
1. a control method for refrigerating equipment, between the storing of described refrigerating equipment, chamber interior is provided with sealing sky
Between, and described refrigerating equipment is provided with the nitrogen-making device for providing nitrogen to described sealing space, and described system
Nitrogen device includes air compressor machine and nitrogen oxygen separator, and wherein said air compressor machine controllably provides compression sky to described nitrogen oxygen separator
Gas, so that described nitrogen oxygen separator uses described compressed air to prepare nitrogen, and described control method includes:
Detect the nitrogen gas concn of described sealing interior volume；
Judge that whether described nitrogen gas concn is more than the first concentration threshold preset；
If so, described air compressor machine continuous firing is controlled so that described nitrogen oxygen separator persistently produces nitrogen, until described nitrogen
Concentration reaches the second default concentration threshold, and described second concentration threshold is more than described first concentration threshold；And
If it is not, control described air compressor machine to open the first Preset Time so that described nitrogen oxygen separator is prepared in this Preset Time
Nitrogen, and open at described air compressor machine and close after described first Preset Time, and re-execute inspection after being spaced the second Preset Time
Survey the step of the concentration of described sealing interior volume nitrogen.
Method the most according to claim 1, wherein, also includes during controlling described air compressor machine continuous firing:
Detect the operating temperature of described air compressor machine；
In the case of the operating temperature of described air compressor machine is more than the first preset temperature, control described air compressor machine pre-in startup the 3rd
If closing after the time, and after closing the 4th Preset Time, again detect the concentration of described sealing interior volume nitrogen；And
If it is not, perform to detect the step of the concentration of described sealing interior volume nitrogen.
Method the most according to claim 1, wherein, before detecting the step of concentration of described sealing interior volume nitrogen
Also include:
Whether the refrigeration compressor detecting described refrigerating equipment is opened；
If so, keep described air compressor machine to close, and perform to detect described sealing interior volume after described refrigeration compressor cuts out
The step of the concentration of nitrogen.
Method the most according to claim 1, wherein,
After described nitrogen gas concn reaches described second concentration threshold, close described air compressor machine, close at described air compressor machine and reach the
The step of the nitrogen gas concn detecting described sealing interior volume is re-executed after five Preset Times.
Method the most according to any one of claim 1 to 4, wherein, carries out the process of nitrogen processed at the described air compressor machine of unlatching
Also include:
Detect the storing temperature of room between described storing；
Judge that whether described storing temperature is more than the second preset temperature；
If so, close described air compressor machine, be then turned on described refrigeration compressor.
6. a refrigerating equipment, including:
Seal box, is arranged at chamber interior between the storing of described refrigerating equipment, and described seal box limits sealing space；
Nitrogen gas concn sensor, is arranged in described sealing space, is configured to detect the nitrogen gas concn in described sealing space；
Nitrogen-making device, is configured to provide nitrogen to described sealing space, and it includes air compressor machine and nitrogen oxygen separator, described air compressor machine
Controllably provide compressed air to described nitrogen oxygen separator, so that described nitrogen oxygen separator uses described compressed air to prepare nitrogen
Gas；
Described air compressor machine is configured to, in the case of described nitrogen gas concn is more than the first concentration threshold preset, and continuous firing
So that described nitrogen oxygen separator persistently produces nitrogen, until described nitrogen gas concn reaches the second default concentration threshold；Institute
State nitrogen gas concn less than in the case of described first concentration threshold, according to closing the second Preset Time after opening the first Preset Time
Intermittent work mode, described second concentration threshold be more than described first concentration threshold；And
Described nitrogen gas concn sensor is configured to, and again detects after described air compressor machine closes described second Preset Time every time
The concentration of described sealing interior volume nitrogen.
Refrigerating equipment the most according to claim 6, also includes:
Air compressor machine temperature sensor, is configured to detect the operating temperature of described air compressor machine；And
Described air compressor machine is configured to, and during described air compressor machine continuous firing, described operating temperature is preset more than first
In the case of temperature, according to the intermittent work mode closing the 4th Preset Time after opening the 3rd Preset Time；And
Described nitrogen gas concn sensor is configured to, and again detects after described air compressor machine closes described 4th Preset Time every time
The concentration of described sealing interior volume nitrogen.
Refrigerating equipment the most according to claim 6, also includes:
Refrigeration detection device, whether the refrigeration compressor being configured to detect described refrigerating equipment is opened；And
Described air compressor machine is configured to, and in the case of described refrigeration compressor is opened, keeps described air compressor machine to close；
Described nitrogen gas concn sensor is configured to, and again detects described sealing interior volume after described refrigeration compressor cuts out
The concentration of nitrogen.
Refrigerating equipment the most according to claim 6, wherein,
Described air compressor machine is configured to, and closes after described nitrogen gas concn reaches the second concentration threshold；And
Described nitrogen gas concn sensor is configured to, and after described air compressor machine is closed and arrived the 5th Preset Time, detection is described again
Seal the concentration of interior volume nitrogen.
10., according to the refrigerating equipment according to any one of claim 6 to 9, also include:
Compartment temperature sensor, is configured to detect the storing temperature of room between described storing；And
Described air compressor machine is configured to, and closes in the case of described storing temperature is more than the second preset temperature；
Described refrigeration compressor is configured to, and in the case of described storing temperature is more than described second preset temperature, waits institute
State after air compressor machine is closed and open.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610365200.6A CN106052291B (en) | 2016-05-26 | 2016-05-26 | Refrigerating equipment and its control method |
| PCT/CN2017/074608 WO2017202089A1 (en) | 2016-05-26 | 2017-02-23 | Refrigeration and freezing device and control method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610365200.6A CN106052291B (en) | 2016-05-26 | 2016-05-26 | Refrigerating equipment and its control method |
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| CN106642910A (en) * | 2016-11-11 | 2017-05-10 | 青岛海尔股份有限公司 | Temperature control method for refrigerating and freezing equipment and refrigerating and freezing equipment |
| CN106642968A (en) * | 2016-11-11 | 2017-05-10 | 青岛海尔股份有限公司 | Nitrogen production control method for refrigerating and freezing equipment and refrigerating and freezing equipment |
| WO2017202089A1 (en) * | 2016-05-26 | 2017-11-30 | 青岛海尔股份有限公司 | Refrigeration and freezing device and control method therefor |
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Also Published As
| Publication number | Publication date |
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| CN106052291B (en) | 2019-01-18 |
| WO2017202089A1 (en) | 2017-11-30 |
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