CN115371351A - Temperature control method and system for vending machine - Google Patents
Temperature control method and system for vending machine Download PDFInfo
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- CN115371351A CN115371351A CN202211019119.4A CN202211019119A CN115371351A CN 115371351 A CN115371351 A CN 115371351A CN 202211019119 A CN202211019119 A CN 202211019119A CN 115371351 A CN115371351 A CN 115371351A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005057 refrigeration Methods 0.000 claims abstract description 104
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 239000003507 refrigerant Substances 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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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
- F25B41/40—Fluid line 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F11/00—Coin-freed apparatus for dispensing, or the like, discrete articles
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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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)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Combustion & Propulsion (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The application discloses a temperature control method and a temperature control system for a vending machine, wherein the temperature control method for the vending machine comprises the following steps: a temperature acquisition step: collecting the temperature of the adjacent first chambers in real time, and judging whether the two chambers reach the set temperature or not according to preset conditions; a refrigeration state control step: and controlling the first compartment refrigeration function or the second compartment refrigeration function to be turned on or off according to the judgment result so that the first compartment detection temperature and the second compartment detection temperature reach the set temperature at the same time and tend to be the same. The invention realizes the beneficial effect that the two chambers can reach the set temperature quickly and simultaneously. Simultaneously, the problem of leading to compressor continuous operation because of two rooms refrigeration speed is different has been solved, through making two rooms reach the settlement temperature simultaneously for the compressor can normally start the shutdown circulation, has reduced power consumption.
Description
Technical Field
The application relates to the technical field of refrigeration system temperature control, in particular to a temperature control method and system for a vending machine.
Background
When the goods selling and replenishing speeds of the first compartment and the second compartment are different, the situation that the refrigerating speeds are obviously different easily occurs, particularly the temperature difference of the drinks sold in the two compartments is large, and when the refrigerating function of the first compartment reaches the set temperature and is closed, the refrigerating function of the second compartment is still opened; when the refrigeration function of the second chamber reaches the set temperature and is closed, the temperature of the second chamber rises to the starting temperature, and the refrigeration function is started; at this time, the compressor continuously works, so that the power consumption is increased, the service life of the compressor is shortened, and other problems occur.
Disclosure of Invention
The embodiment of the application provides a temperature control method and a temperature control system for an automatic vending machine, and at least solves the problems that the detected temperature of double refrigeration chambers of the vending machine cannot reach the set temperature at the same time, so that a compressor cannot be normally started and stopped for circulation, the power consumption of the compressor is large, the service life of the compressor is short, and the like.
The invention provides a temperature control method for a vending machine, which comprises the following steps:
temperature acquisition step: acquiring the detection temperature of a first compartment and the detection temperature of a second compartment which are adjacent in real time;
a temperature judgment step: judging whether the two chambers reach the set temperature or not through a preset condition based on the detection temperature of one of the two chambers;
a refrigeration state control step: and controlling the first compartment refrigeration function or the second compartment refrigeration function to be turned on or off according to the judgment result so that the first compartment detection temperature and the second compartment detection temperature reach the set temperature at the same time and tend to be the same.
The above temperature control method for a vending machine, wherein the temperature determining step includes:
when the first compartment refrigeration function and the second compartment refrigeration function are started, if L is detected K ＞S t1 +H C1 If B-A is larger than C, the judgment result is that the first compartment detection temperature does not reach the first compartment set temperature, and the second compartment refrigeration speed is slower than the first compartment refrigeration speed;
wherein the detection temperature of the first compartment is Lk; the set temperature of the first chamber is St1; the temperature return difference is Hc1; the temperature difference between the first compartment detection temperature and the first compartment set temperature is A, and the temperature difference between the second compartment detection temperature and the second compartment set temperature is B; the maximum temperature difference between A and B is C.
In an embodiment, the temperature determining step further includes:
if L is K ≥S t1 +H C1 If the judgment result is that the first compartment detection temperature does not reach the first compartment set temperature, the first compartment refrigeration speed and the second compartment refrigeration speed tend to be the same;
wherein the minimum temperature difference between A and B is D.
In an embodiment, the temperature determining step further includes:
if L is K ＜S t1 And if so, the judgment result is that the first chamber detection temperature reaches the first chamber set temperature.
In an embodiment, the temperature determining step further includes:
if L is K ＜S t1 +H C1 And A is greater than B, the judgment result is that the first compartment refrigeration speed is slower than the second compartment refrigeration speed.
In an embodiment, the cooling state controlling step includes:
when the judgment result is that the detected temperature of the first compartment does not reach the set temperature of the first compartment and the refrigerating speed of the second compartment is lower than that of the first compartment, the refrigerating function of the first compartment is closed, and the refrigerating function of the second compartment is opened;
and when the judgment result is that the first compartment detection temperature does not reach the first compartment set temperature and the first compartment refrigeration speed and the second compartment refrigeration speed tend to be the same, starting the first compartment refrigeration function and the second compartment refrigeration function.
The present invention also provides a temperature control system for a vending machine, wherein the temperature control system is suitable for the above temperature control method for a vending machine, and the temperature control system for a vending machine comprises:
a temperature acquisition unit: acquiring the detection temperature of a first compartment and the detection temperature of a second compartment which are adjacent in real time;
a temperature determination unit: judging whether the two chambers reach the set temperature or not through a preset condition based on the detection temperature of one of the two chambers;
a cooling state control unit: and controlling the first compartment refrigeration function or the second compartment refrigeration function to be turned on or off according to the judgment result so that the first compartment detection temperature and the second compartment detection temperature reach the set temperature at the same time and tend to be the same.
The temperature control system for the vending machine further comprises a self-evaporation pipe, a condenser, a gas-liquid separator, a drying filter, a left electromagnetic valve, a left capillary tube, a left evaporator, a right electromagnetic valve, a right capillary tube and a right evaporator.
The above temperature control system for a vending machine, wherein the cooling state control unit comprises:
if the judgment result is that the first chamber detection temperature does not reach the first chamber set temperature, and the second chamber refrigeration speed is lower than the first chamber refrigeration speed, the first chamber refrigeration function is closed, the second chamber refrigeration function is opened, the compressor is started, the refrigerant flows through the self-evaporation pipe, the condenser and the drying filter, the left electromagnetic valve is closed, the right electromagnetic valve is opened, the right electromagnetic valve controls the refrigerant to only flow to the right capillary pipe and the right evaporator, and then the refrigerant flows through the gas-liquid separator and returns to the compressor.
The above temperature control system for a vending machine, wherein the cooling state control unit comprises:
if the judgment result is that the first compartment detection temperature does not reach the first compartment set temperature, the first compartment refrigeration speed and the second compartment refrigeration speed tend to be the same, the first compartment refrigeration function and the second compartment refrigeration function are started, the compressor is started, the refrigerant flows through the self-evaporation pipe, the condenser and the drying filter, the right electromagnetic valve and the left electromagnetic valve are started, the left electromagnetic valve controls the refrigerant to flow to the left capillary pipe and the left evaporator, the right electromagnetic valve controls the refrigerant to flow to the right capillary pipe and the right evaporator, and the refrigerant flows back to the compressor after flowing out of the left evaporator and the right evaporator and then flows into the gas-liquid separator.
Compared with the prior art, the invention provides a temperature control method and a temperature control system for a vending machine, and solves the problem that the data difference between the detected temperature and the set temperature of two chambers is large due to different selling speeds and different load refrigerating speeds of the two chambers in the process that the machine just finishes loading for refrigerating; after the machine refrigerates for a period of time, in the circulation that the detected temperature is close to the set temperature, when the refrigeration function of the first chamber reaches the set temperature and is closed, the refrigeration function of the second chamber is still opened, and when the refrigeration function of the second chamber reaches the set temperature and is closed, the temperature of the second chamber rises to the starting temperature and the refrigeration function is opened, the compressor continuously works, the service life of the compressor is shortened, and the power consumption is increased.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of a method for temperature control of a vending machine according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a temperature control flow for a vending machine according to an embodiment of the present application;
FIG. 3 is a schematic illustration of a refrigeration principle according to an embodiment of the present application;
fig. 4 is a schematic view showing the construction of the temperature control system for the vending machine according to the present invention.
Wherein the reference numerals are:
a temperature acquisition unit: 51;
a temperature determination unit: 52;
a cooling state control unit: 53.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the application, and that it is also possible for a person skilled in the art to apply the application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that such a development effort might be complex and tedious, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as a limitation of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless otherwise defined, technical or scientific terms referred to herein should have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The use of the terms "including," "comprising," "having," and any variations thereof herein, is meant to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
The invention provides a temperature control method and a temperature control system for a vending machine, which are used for solving the problems that the continuous work of a compressor is caused due to different refrigerating speeds of double refrigerating chambers, the detected temperatures of the double refrigerating chambers cannot reach the set temperature at the same time and the like by enabling the detected temperatures of the double refrigerating chambers of the vending machine to quickly reach the set temperature at the same time.
The present invention will be described with reference to specific examples.
Example one
The embodiment also provides a temperature control method for the vending machine. Referring to fig. 1, fig. 1 is a flow chart illustrating a temperature control method for a vending machine according to an embodiment of the present disclosure. As shown in fig. 1, the temperature control method for the vending machine includes:
a temperature acquisition step S1: acquiring the detection temperature of a first compartment and the detection temperature of a second compartment which are adjacent in real time;
a temperature determination step S2: judging whether the two chambers reach the set temperature or not through a preset condition based on the detection temperature of one of the two chambers;
cooling state control step S3: and controlling the first compartment refrigeration function or the second compartment refrigeration function to be turned on or turned off according to the judgment result, so that the first compartment detection temperature and the second compartment detection temperature reach the set temperature at the same time and tend to be the same.
In an embodiment, the temperature determining step S2 includes:
when the first compartment refrigeration function and the second compartment refrigeration function are started, if L is detected K ＞S t1 +H C1 +1, judging whether B-A is larger than C, if B-A is larger than C, judging that the detection temperature of the first compartment does not reach the set temperature of the first compartment and the refrigeration speed of the second compartment is slower than that of the first compartment;
if L is K ≥S t1 +H C1 If B-A is less than or equal to D, the judgment result is that the detection temperature of the first compartment does not reach the set temperature of the first compartment, and the refrigeration speed of the first compartment and the refrigeration speed of the second compartment tend to be the same;
if L is K ＜S t1 If the first chamber detection temperature reaches the first chamber set temperature, judging that the first chamber detection temperature reaches the first chamber set temperature;
if L is K ＜S t1 +H C1 If A is greater than B, the judgment result is that the refrigeration speed of the first compartment is slower than that of the second compartment;
wherein the detection temperature of the first compartment is Lk; the set temperature of the first chamber is St1; the temperature return difference is Hc1; the temperature difference between the first compartment detection temperature and the first compartment set temperature is A, and the temperature difference between the second compartment detection temperature and the second compartment set temperature is B; the maximum temperature difference between A and B is C;
wherein the minimum temperature difference between A and B is D.
In the embodiment, the cooling state control step S3:
when the judgment result shows that the detected temperature of the first compartment does not reach the set temperature of the first compartment and the refrigerating speed of the second compartment is lower than that of the first compartment, closing the refrigerating function of the first compartment and opening the refrigerating function of the second compartment;
and when the judgment result shows that the detected temperature of the first compartment does not reach the set temperature of the first compartment and the refrigeration speed of the second compartment tend to be the same, starting the refrigeration function of the first compartment and the refrigeration function of the second compartment.
In a specific implementation, the second compartment senses the temperature R K And a set temperatureDegree S t2 The difference is B; a and B represent the speed of refrigeration, and the smaller the numerical value is, the faster the temperature-pulling speed is; h C1 Representing a reasonable range of temperature fluctuation and needing to be preset in advance; the maximum temperature difference between A and B is C, and C is generally set to be 10; the minimum temperature difference between A and B is D, which is generally set to 3.
The refrigeration functions of the first chamber and the second chamber are all started, and when the control system detects L K ＞S t1 +H C1 When the temperature of the refrigerant in the first compartment is higher than the temperature of the refrigerant in the second compartment, the control system controls the first compartment to close the refrigeration function, and the refrigerant flows into the second compartment in ase:Sub>A concentrated manner to accelerate the refrigeration speed of the second compartment; the control system continuously detects and judges whether B-A is less than or equal to D, when B-A is less than or equal to D, the control system controls the first chamber to restart the refrigeration function, at the moment, the two chambers refrigerate simultaneously, the temperature-pulling speeds of the two chambers are balanced, and overlarge difference is avoided; during cooling of the machine just after loading, i.e. L K ＞S t1 +H C1 When +1, the above steps make the first chamber and the second chamber deviate from the set temperature and refrigerate rapidly, make B and A get closer and closer, make two chambers reach the set temperature as fast and as possible at the same time, make the compressor stop;
when the control system detects L K ＜S t1 When the refrigerant flows into the first chamber, the refrigerant flows into the second chamber in a concentrated manner, so that the refrigerating speed of the refrigerant is increased; after the refrigeration function of the first chamber is closed, the numerical value of the first chamber A is increased, and the numerical value of the second chamber B is rapidly reduced; wherein the first compartment L K And the value of a increases, the following two situations occur:
when L is K ≥S t1 +H C1 The control system controls the first compartment to restart the refrigeration function; when L is K ＜S t1 +H C1 When A is larger than B, the temperature sensor of the first chamber is in a reasonable fluctuation range of temperature, but the refrigeration speed of the first chamber is slower than that of the second chamber, so that the control system controls the first chamber to restart the refrigeration function; after the machine is refrigerated for a period of time, the detected temperature approaches the set temperature L K ≤S t1 +H C1 In the cycle, the steps enable the first compartment and the second compartment to reach the refrigeration temperature as far as possible simultaneously, namely A and B reach 0 simultaneously, so that the compressor can be started and stopped normally, the refrigeration speeds of the first compartment and the second compartment are as same as possible, the power consumption can be reduced, and the service life of the compressor can be prolonged.
Example two
The embodiment also provides a temperature control system for the vending machine. FIG. 3 is a schematic illustration of a refrigeration principle according to an embodiment of the present application; fig. 4 is a schematic view showing the construction of the temperature control system for the vending machine according to the present invention. As shown in fig. 3 to 4, the temperature control system for vending machine of the invention is suitable for the above temperature control method for vending machine, and the temperature control system for vending machine comprises:
temperature acquisition unit 51: acquiring the detection temperature of a first compartment and the detection temperature of a second compartment which are adjacent in real time;
temperature determination unit 52: judging whether the two chambers reach the set temperature or not through a preset condition based on the detection temperature of one of the two chambers;
cooling state control unit 53: and controlling the first compartment refrigeration function or the second compartment refrigeration function to be turned on or off according to the judgment result so that the first compartment detection temperature and the second compartment detection temperature reach the set temperature at the same time and tend to be the same.
In an embodiment, the temperature control system for the vending machine further comprises a self-evaporation pipe, a condenser, a gas-liquid separator, a drying filter, a left electromagnetic valve, a left capillary tube, a left evaporator, a right electromagnetic valve, a right capillary tube and a right evaporator.
In the embodiment, the cooling state control unit 53 includes:
and if the judgment result shows that the detected temperature of the first chamber does not reach the set temperature of the first chamber and the refrigerating speed of the second chamber is lower than that of the first chamber, the refrigerating function of the first chamber is closed, the refrigerating function of the second chamber is started, the compressor is started, the refrigerant flows through the self-evaporation pipe, the condenser and the drying filter, the left electromagnetic valve is closed, the right electromagnetic valve is opened, and the refrigerant flows back to the compressor through the gas-liquid separator after being controlled to flow only to the right capillary tube and the right evaporator by the right electromagnetic valve.
In the embodiment, the cooling state control unit 53 includes:
if the judgment result shows that the detected temperature of the first chamber does not reach the set temperature of the first chamber and the refrigerating speed of the second chamber tend to be the same, the refrigerating function of the first chamber and the refrigerating function of the second chamber are started, the compressor is started, the refrigerant flows through the self-evaporation pipe, the condenser and the drying filter, the right electromagnetic valve and the left electromagnetic valve are opened, the left electromagnetic valve controls the refrigerant to flow to the left capillary tube and the left evaporator, the right electromagnetic valve controls the refrigerant to flow to the right capillary tube and the right evaporator, and the refrigerant flows out of the left evaporator and the right evaporator and then flows into the gas-liquid separator and then returns to the compressor.
EXAMPLE III
The present embodiment also provides temperature control process steps for the vending machine. Fig. 2 is a schematic diagram of a temperature control flow for a vending machine according to an embodiment of the present application. As shown in fig. 2, the detailed flow of temperature control includes the following steps:
step 1: judging whether the detected temperature of the first chamber is greater than the set temperature of the first chamber and the temperature return difference, namely Lk is greater than St1+ Hc1;
if Lk is larger than St1+ Hc1, starting a first compartment refrigeration function, namely opening a first compartment electromagnetic valve, starting a first compartment fan and starting a compressor;
step 2: if Lk is less than or equal to St1+ Hc1, continuously judging whether the first compartment detection temperature-first compartment set temperature is greater than the second compartment detection temperature-second compartment set temperature and the second compartment is in a refrigerating state, namely Lk-St1 is greater than Rk-St2 and the refrigerating state of the second compartment is running; if Lk-St1 is larger than Rk-St2 and the second chamber refrigeration state is running, the first chamber needs to be started for refrigeration, namely, a first chamber electromagnetic valve is opened, a first chamber fan is started, and a compressor is started;
and step 3: if Lk-St1 is not more than Rk-St2 or the refrigeration function of the second chamber is stopped, judging whether the detection temperature of the first chamber is less than the set temperature of the first chamber, namely Lk is less than St1; if Lk is less than St1, the refrigeration function of the first chamber needs to be closed, the refrigeration state of the second chamber needs to be judged before closing, if the second chamber is in the refrigeration state, the electromagnetic valve of the first chamber is closed, and after 5 minutes of delay, the refrigeration function of the first chamber is closed after the fan of the first chamber is closed; if the second compartment is in a non-refrigeration state, the compressor is closed firstly, then the first compartment electromagnetic valve is closed, the first compartment fan is closed after 5 minutes of delay, and the first compartment refrigeration state is closed;
step 4, if Lk is larger than or equal to St1, judging whether the detected temperature of the first chamber is smaller than or equal to the set temperature of the first chamber and the temperature return difference +1, namely, lk is smaller than or equal to St1+ Hc1+ 1; if Lk is less than or equal to St1+ Hc1+ 1, ending the circulation and returning to the step 1;
and 5: if Lk is larger than St1+ Hc1+1 and the second chambers are in a refrigerating state, judging whether the first chamber detection temperature-first chamber set temperature is smaller than the second chamber detection temperature-second chamber set temperature, namely Lk-St1 is smaller than Rk-St2; if the Lk-St1 is not less than the Rk-St2, ending the circulation and returning to the step 1; if Lk-St1 is less than Rk-St2, judging that (Rk-St 2) - (Lk-St 1) is more than or equal to 10; if (Rk-St 2) - (Lk-St 1) ≥ 10, closing the first compartment refrigeration state;
and 6: if (Rk-St 2) - (Lk-St 1) < 10, judging whether (Rk-St 2) - (Lk-St 1) < 3, if so, starting the first chamber for refrigeration; if (Rk-St 2) - (Lk-St 1) > 3, the loop is ended, returning to step 1.
In fig. 2, the sensor comprises a first compartment temperature sensor L K Second compartment sensor R K A first compartment defrosting sensor Ls, a second compartment defrosting sensor Rs; the solenoid valve comprises a first chamber solenoid valve L d Second Compartment solenoid valves R d (ii) a The fan comprises a first chamber fan L f Second compartment blower R f 。
In summary, the present invention provides a temperature control method and system for an automatic vending machine, which enable the detected temperatures of the first compartment and the second compartment to reach the set temperature at the same time, so that the compressor is normally started and stopped, and the shutdown time of the compressor is prolonged, thereby reducing the power consumption and prolonging the service life of the compressor.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the protection scope of the appended claims.
Claims (10)
1. Temperature control method for vending machines, characterized in that it comprises:
temperature acquisition step: acquiring the detection temperature of a first compartment and the detection temperature of a second compartment which are adjacent in real time;
a temperature judgment step: judging whether the two chambers reach the set temperature or not through a preset condition based on the detection temperature of one of the two chambers;
a refrigeration state control step: and controlling the first compartment refrigeration function or the second compartment refrigeration function to be turned on or off according to the judgment result so that the first compartment detection temperature and the second compartment detection temperature reach the set temperature at the same time and tend to be the same.
2. The temperature control method for a vending machine according to claim 1, wherein the temperature judging step includes:
when the first compartment refrigeration function and the second compartment refrigeration function are started, if L is detected K ＞S t1 +H C1 If B-A is larger than C, the judgment result is that the first compartment detection temperature does not reach the first compartment set temperature, and the second compartment refrigeration speed is slower than the first compartment refrigeration speed;
wherein the detection temperature of the first compartment is Lk; the set temperature of the first chamber is St1; the temperature return difference is Hc1; the temperature difference between the first compartment detection temperature and the first compartment set temperature is A, and the temperature difference between the second compartment detection temperature and the second compartment set temperature is B; the maximum temperature difference between A and B is C.
3. The temperature control method for a vending machine according to claim 2, wherein the temperature judging step further includes:
if L is K ≥S t1 +H C1 If B-A is less than or equal to D, the judgment result is that the first compartment detection temperature does not reach the first compartment set temperature, and the first compartment refrigeration speed and the second compartment refrigeration speed tend to be the same;
wherein the minimum temperature difference between A and B is D.
4. The temperature control method for a vending machine according to claim 2, wherein the temperature judging step further includes:
if L is K ＜S t1 And if so, judging that the first chamber detection temperature reaches the first chamber set temperature.
5. The temperature control method for the vending machine according to claim 2, wherein the temperature judging step further includes:
if L is K ＜S t1 +H C1 And A is greater than B, the judgment result is that the first compartment refrigeration speed is slower than the second compartment refrigeration speed.
6. The temperature control method for vending machine according to claim 2, wherein the cooling state control step includes:
when the judgment result is that the first compartment detection temperature does not reach the first compartment set temperature and the second compartment refrigeration speed is lower than the first compartment refrigeration speed, closing the first compartment refrigeration function and opening the second compartment refrigeration function;
and when the judgment result shows that the first compartment detection temperature does not reach the first compartment set temperature and the first compartment refrigeration speed and the second compartment refrigeration speed tend to be the same, starting the first compartment refrigeration function and the second compartment refrigeration function.
7. A temperature control system for a vending machine, the temperature control system for a vending machine comprising:
a temperature acquisition unit: acquiring the detection temperature of a first compartment and the detection temperature of a second compartment which are adjacent in real time;
a temperature determination unit: judging whether the two chambers reach the set temperature or not through a preset condition based on the detection temperature of one of the two chambers;
a cooling state control unit: and controlling the first compartment refrigeration function or the second compartment refrigeration function to be turned on or off according to the judgment result so that the first compartment detection temperature and the second compartment detection temperature reach the set temperature at the same time and tend to be the same.
8. The temperature control system for vending machine according to claim 7, further comprising a self-evaporation tube, a condenser, a gas-liquid separator, a dry filter, a left solenoid valve, a left capillary tube, a left evaporator, a right solenoid valve, a right capillary tube, a right evaporator.
9. The temperature control system for vending machine according to claim 8, wherein said cooling state control unit comprises:
if the judgment result is that the first chamber detection temperature does not reach the first chamber set temperature, and the second chamber refrigeration speed is lower than the first chamber refrigeration speed, the first chamber refrigeration function is closed, the second chamber refrigeration function is opened, the compressor is started, the refrigerant flows through the self-evaporation pipe, the condenser and the drying filter, the left electromagnetic valve is closed, the right electromagnetic valve is opened, the right electromagnetic valve controls the refrigerant to only flow to the right capillary pipe and the right evaporator, and then the refrigerant flows through the gas-liquid separator and returns to the compressor.
10. The temperature control system for a vending machine according to claim 9, wherein the cooling state control unit includes:
if the judgment result is that the first compartment detection temperature does not reach the first compartment set temperature, the first compartment refrigeration speed and the second compartment refrigeration speed tend to be the same, the first compartment refrigeration function and the second compartment refrigeration function are started, the compressor is started, the refrigerant flows through the self-evaporation pipe, the condenser and the drying filter, the right electromagnetic valve and the left electromagnetic valve are started, the left electromagnetic valve controls the refrigerant to flow to the left capillary pipe and the left evaporator, the right electromagnetic valve controls the refrigerant to flow to the right capillary pipe and the right evaporator, and the refrigerant flows back to the compressor after flowing out of the left evaporator and the right evaporator and then flows into the gas-liquid separator.
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