CN111854206B - Refrigerator equipment, refrigerating system and control method of refrigerating system - Google Patents
Refrigerator equipment, refrigerating system and control method of refrigerating system Download PDFInfo
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- CN111854206B CN111854206B CN201910348362.2A CN201910348362A CN111854206B CN 111854206 B CN111854206 B CN 111854206B CN 201910348362 A CN201910348362 A CN 201910348362A CN 111854206 B CN111854206 B CN 111854206B
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000003507 refrigerant Substances 0.000 claims abstract description 322
- 238000005057 refrigeration Methods 0.000 claims abstract description 88
- 230000001172 regenerating effect Effects 0.000 claims abstract description 28
- 238000011084 recovery Methods 0.000 claims description 52
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 11
- 238000007796 conventional method Methods 0.000 description 10
- 238000013021 overheating Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000004590 computer program Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001052 transient effect 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
本申请涉及一种冷柜设备、制冷系统及其控制方法，属于制冷设备领域。制冷系统包括冷凝器、蒸发器、压缩机和节流装置连接构成的冷媒循环回路，还包括回热器，控制方法包括：获取制冷系统运行过程中，第一回热腔的冷媒进口的第一冷媒温度以及第二回热腔的冷媒出口的第二冷媒温度，第一回热腔的冷媒出口的第三冷媒温度以及蒸发器的冷媒进口的第四冷媒温度；根据第一回热腔的冷媒进口的第一冷媒温度、第二回热腔的冷媒出口的第二冷媒温度、第一回热腔的冷媒出口的第三冷媒温度以及蒸发器的冷媒进口的第四冷媒温度，控制调整节流装置的流量开度。能够对节流装置实施精准控制，使蒸发器出口冷媒不过热，充分利用蒸发器的换热能力，使制冷系统高效工作。
The application relates to a refrigerator device, a refrigeration system and a control method thereof, and belongs to the field of refrigeration equipment. The refrigeration system includes a refrigerant circulation loop formed by connecting a condenser, an evaporator, a compressor and a throttling device, and also includes a regenerator. The temperature of the refrigerant and the temperature of the second refrigerant at the refrigerant outlet of the second regenerative cavity, the temperature of the third refrigerant at the refrigerant outlet of the first regenerative cavity, and the temperature of the fourth refrigerant at the refrigerant inlet of the evaporator; according to the refrigerant temperature of the first regenerative cavity The temperature of the first refrigerant at the inlet, the temperature of the second refrigerant at the outlet of the second regenerative chamber, the temperature of the third refrigerant at the outlet of the refrigerant of the first regenerative chamber, and the temperature of the fourth refrigerant at the inlet of the refrigerant of the evaporator, control and adjust the throttling The flow opening of the device. It can precisely control the throttling device, so that the refrigerant at the outlet of the evaporator does not overheat, make full use of the heat exchange capacity of the evaporator, and make the refrigeration system work efficiently.
Description
Technical Field
The present application relates to the field of refrigeration equipment, and for example, to a refrigerator device, a refrigeration system, and a control method thereof.
Background
The electronic expansion valve is a throttling element which can adjust the flow of a refrigerant of a refrigerating device according to a preset program, and is commonly used for controlling the throttling of the flow of the refrigerant of refrigerating equipment such as a refrigerator, an air conditioner and the like; especially, in some occasions with severe load change or wider operation condition range in the operation process of refrigeration equipment, the traditional throttling elements (such as capillary tubes, thermal expansion valves and the like) can not meet the requirements of comfort and energy conservation, and the electronic expansion valve is more and more widely applied as a throttling element with more comprehensive functions.
The electronic expansion valve has the advantages of high response and action speed, generally, the electronic expansion valve only needs a few seconds from a fully closed state to a fully opened state, and the opening and closing characteristics and the speed can be set manually; the electronic expansion valve can be accurately adjusted within the range of 10% -100%, and the adjustment range can be set according to the actual working requirements of different refrigeration equipment products.
For the existing refrigeration equipment using an electronic expansion valve, a control method of the electronic expansion valve generally adjusts the opening degree of the electronic expansion valve according to the superheat degree of a refrigerant detected by an evaporator of the refrigeration equipment, for example, when the superheat degree of the refrigerant is high, the opening degree of the electronic expansion valve is increased, and when the superheat degree of the refrigerant is low, the opening degree of the electronic expansion valve is decreased. Correspondingly, in order to realize the control flow, the refrigeration equipment needs to be provided with a refrigerant superheat degree control system consisting of an electronic expansion valve, a pressure sensor, a temperature sensor, a controller and the like, wherein the pressure sensor is mainly responsible for detecting the evaporation pressure of the refrigerant in the evaporator and converting the evaporation pressure value into a current signal of 4 mA-20 mA; the temperature sensor can generate corresponding resistance value signals according to different temperatures; the controller can receive a 4 mA-20 mA current signal sent by the pressure sensor and a resistance value signal of the temperature sensor, determine the refrigerant superheat degree of the evaporator according to the signals, and further send out a pulse signal through a built-in program to control the opening degree of the electronic expansion valve; the electronic expansion valve controls the opening of the expansion valve according to the received pulse signal, and ensures proper liquid supply amount and proper superheat degree.
The control flow controls the opening of the throttling device according to the superheat degree of the outlet of the evaporator, and the heat exchange capacity of the refrigerating system cannot be fully utilized when the outlet of the evaporator of the refrigerating system is overheated, so that the heat exchange efficiency of the system is reduced.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
According to one aspect of the disclosed embodiments, a method of controlling a refrigeration system is provided.
In some optional embodiments, the refrigeration system comprises a refrigerant circulation loop mainly formed by connecting a condenser for exchanging heat with the outside, an evaporator for exchanging heat with the inside, a compressor and a throttling device, and the refrigeration system also comprises a heat regenerator, wherein a first heat recovery cavity of the heat regenerator is connected with a refrigerant pipe section between the condenser and the throttling device in series, and a second heat recovery cavity is connected with a refrigerant pipe section between the evaporator and the compressor in series; the control method comprises the following steps:
acquiring a first refrigerant temperature of a refrigerant inlet of a first regenerative cavity, a second refrigerant temperature of a refrigerant outlet of a second regenerative cavity, a third refrigerant temperature of a refrigerant outlet of the first regenerative cavity and a fourth refrigerant temperature of a refrigerant inlet of an evaporator in the operation process of the refrigeration system;
and controlling and adjusting the flow opening of the throttling device according to the first refrigerant temperature of the refrigerant inlet of the first heat recovery cavity, the second refrigerant temperature of the refrigerant outlet of the second heat recovery cavity, the third refrigerant temperature of the refrigerant outlet of the first heat recovery cavity and the fourth refrigerant temperature of the refrigerant inlet of the evaporator.
In an optional embodiment, the control method further comprises:
according to the first refrigerant temperature of the refrigerant import of first backheat chamber, the second refrigerant temperature of the refrigerant export of second backheat chamber, the third refrigerant temperature of the refrigerant export of first backheat chamber and the fourth refrigerant temperature of the refrigerant import of evaporimeter, the flow aperture of control adjustment throttling arrangement includes:
calculating a first temperature difference value between the first refrigerant temperature and the second refrigerant temperature;
calculating a second temperature difference value between the temperature of the third refrigerant and the temperature of the fourth refrigerant;
and controlling and adjusting the flow opening of the throttling device according to the first temperature difference value, a preset first difference value threshold value, a preset second temperature difference value and a preset second difference value threshold value.
In an optional embodiment, the controlling and adjusting the flow opening degree of the throttling device according to the first temperature difference and a preset first difference threshold, the second temperature difference and a preset second difference threshold includes:
and when the first temperature difference is smaller than or equal to a preset first difference threshold value and the second temperature difference is smaller than or equal to a preset second difference threshold value, keeping the flow opening of the throttling device unchanged.
In an optional embodiment, the controlling and adjusting the flow opening degree of the throttling device according to the first temperature difference value and a preset first difference threshold, the second temperature difference value and a preset second difference threshold includes:
and when the first temperature difference value is greater than a preset first difference value threshold value and the second temperature difference value is less than a preset second difference value threshold value, controlling to reduce the flow opening of the throttling device.
In an optional embodiment, the controlling and adjusting the flow opening degree of the throttling device according to the first temperature difference value and a preset first difference threshold, the second temperature difference value and a preset second difference threshold includes:
and when the first temperature difference value is smaller than a preset first difference value threshold value and the second temperature difference value is larger than a preset second difference value threshold value, controlling and improving the flow opening of the throttling device.
According to another aspect of an embodiment of the present disclosure, a refrigeration system is provided.
In some optional embodiments, the refrigeration system comprises a refrigerant circulation loop mainly formed by connecting a condenser for exchanging heat with the outside, an evaporator for exchanging heat with the inside, a compressor and a throttling device, and the refrigeration system also comprises a heat regenerator, wherein a first heat recovery cavity of the heat regenerator is connected with a refrigerant pipe section between the condenser and the throttling device in series, and a second heat recovery cavity is connected with a refrigerant pipe section between the evaporator and the compressor in series;
the refrigeration system further includes:
the first temperature sensor is used for acquiring the first refrigerant temperature of a refrigerant inlet of the first heat recovery cavity in the operation process of the refrigeration system;
the second temperature sensor is used for acquiring the second refrigerant temperature of the refrigerant outlet of the second regenerative cavity;
the third temperature sensor is used for acquiring a third refrigerant temperature of the refrigerant outlet of the first heat recovery cavity;
a fourth temperature sensor for a fourth refrigerant temperature at the refrigerant inlet of the evaporator;
and the controller is used for controlling and adjusting the flow opening of the throttling device according to the first refrigerant temperature of the refrigerant inlet of the first heat recovery cavity, the second refrigerant temperature of the refrigerant outlet of the second heat recovery cavity, the third refrigerant temperature of the refrigerant outlet of the first heat recovery cavity and the fourth refrigerant temperature of the refrigerant inlet of the evaporator.
In an alternative embodiment, the controller is specifically configured to:
calculating a first temperature difference value between the first refrigerant temperature and the second refrigerant temperature;
calculating a second temperature difference value between the temperature of the third refrigerant and the temperature of the fourth refrigerant;
and controlling and adjusting the flow opening of the throttling device according to the first temperature difference value, a preset first difference value threshold value, a preset second temperature difference value and a preset second difference value threshold value.
In an alternative embodiment, the controller is specifically configured to:
and when the first temperature difference is smaller than or equal to a preset first difference threshold value and the second temperature difference is smaller than or equal to a preset second difference threshold value, keeping the flow opening of the throttling device unchanged.
In an alternative embodiment, the controller is specifically configured to:
and when the first temperature difference value is greater than a preset first difference value threshold value and the second temperature difference value is less than a preset second difference value threshold value, controlling to reduce the flow opening of the throttling device.
In an optional embodiment, the controller is specifically further configured to:
and when the first temperature difference value is smaller than a preset first difference value threshold value and the second temperature difference value is larger than a preset second difference value threshold value, controlling and improving the flow opening of the throttling device.
According to another aspect of embodiments of the present disclosure, a cooler apparatus is provided.
In some optional embodiments, the freezer device has a refrigeration system as in any of the previously disclosed embodiments.
Some technical solutions provided by the embodiments of the present disclosure can achieve the following technical effects:
the control method of the refrigeration system can accurately control the throttling device, guarantees that refrigerant at the outlet of the evaporator is not overheated, makes full use of the heat exchange capacity of the evaporator, and enables the refrigeration system to work efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic block diagram of a refrigeration system provided by an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart diagram of a method of controlling a refrigeration system provided by an embodiment of the present disclosure;
FIG. 3 is a flow chart schematic of a method of controlling a refrigeration system provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of the overall configuration of a refrigeration system provided by an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure.
Reference numerals:
1. a freezer device; 11. a refrigeration system; 111. a condenser; 112. an evaporator; 121. a first temperature sensor; 122. a second temperature sensor; 123. a third temperature sensor; 124. a fourth temperature sensor; 13. a controller; 14. a throttling device; 15. a compressor; 16. a heat regenerator; 161. a first heat recovery cavity; 162. a second regenerative chamber; 500. a processor; 501. a memory; 502. a communication interface; 503. a bus.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
In the embodiment of the application, the control method of the refrigeration system 11 can implement accurate control on the throttling device, ensure that the refrigerant at the outlet of the evaporator is not overheated, fully utilize the heat exchange capacity of the evaporator, and enable the refrigeration system to work efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
Fig. 1 is a schematic diagram illustrating the construction of a refrigeration system 11 of the present application according to an exemplary embodiment.
As shown in fig. 1, the refrigeration system 11 includes a refrigerant circulation loop mainly formed by connecting a condenser 111 for exchanging heat with the outside, an evaporator 112 for exchanging heat with the inside, a compressor 15, and a throttling device 14, and the refrigeration system 11 further includes a heat regenerator 16, in which a first heat recovery chamber 161 of the heat regenerator is connected in series with a refrigerant pipe section between the condenser 111 and the throttling device 14, and a second heat recovery chamber 162 is connected in series with a refrigerant pipe section between the evaporator 112 and the compressor 15.
Here, regenerator 16 includes a first regenerative chamber 161 and a second regenerative chamber 162. The first heat recovery chamber 161 of the heat regenerator is connected in series with the refrigerant pipe section between the condenser 111 and the throttle device 14, and the second heat recovery chamber 162 of the heat regenerator is connected in series with the refrigerant pipe between the evaporator 112 and the compressor 15. In a refrigeration system comprising a heat regenerator, if the opening degree of a throttling device is controlled by a conventional method for detecting the superheat degree of a refrigerant at an outlet of an evaporator, a temperature sensor and a pressure sensor are required to be arranged at the outlet of the evaporator, and in a refrigeration device such as a common refrigerator and the like, the evaporator is arranged in a foaming layer, so that the temperature sensor and the pressure sensor at the outlet of the evaporator are arranged in the foaming layer, thus the installation and the maintenance of the sensor are very inconvenient, and in view of the above problems, in the application, a method for detecting the refrigerant inlet temperature of a first heat recovery cavity, the refrigerant outlet temperature of a second heat recovery cavity, the refrigerant outlet temperature of the first heat recovery cavity and the refrigerant inlet temperature of the evaporator is adopted to control and adjust the flow opening degree of the throttling device without depending on parameters detected by the sensor arranged on the evaporator, the installation of the sensor is effectively simplified, the maintenance is convenient, and the accurate adjustment and control of the opening degree of the electronic expansion valve and other throttling devices can be still ensured.
In some embodiments, in the case where the refrigeration system is applied to an air conditioning apparatus, the condenser 111 is a heat exchanger for exchanging heat between the refrigeration system 11 and the outdoor environment; the evaporator 112 is a heat exchanger for exchanging heat between the refrigeration system 11 and the indoor environment; under the condition that the refrigeration system is applied to the refrigerator equipment, the condenser 111 is a heat exchanger for exchanging heat between the refrigeration system 11 and the environment outside the refrigerator equipment shell; the evaporator 112 is a heat exchanger for exchanging heat between the refrigeration system 11 and the refrigerated environment within the freezer housing.
Optionally, the refrigeration system 11 further includes a first temperature sensor 121, a second temperature sensor 122, a third temperature sensor 123, and a fourth temperature sensor 124. The first temperature sensor 121 is configured to obtain a first refrigerant temperature at a refrigerant inlet of the first heat recovery cavity 161 during an operation process of the refrigeration system 11; the second temperature sensor 122 is configured to obtain a second refrigerant temperature at the refrigerant outlet of the second regenerative chamber 162; a third temperature sensor 123, configured to obtain a third refrigerant temperature at the refrigerant outlet of the first heat recovery cavity 161; a fourth temperature sensor 124 for a fourth refrigerant temperature at the refrigerant inlet of the evaporator 112;
optionally, the refrigeration system 11 further includes a controller 13, configured to control and adjust a flow opening of the throttling device 14 according to a first refrigerant temperature of the refrigerant inlet of the first recuperative chamber 161, a second refrigerant temperature of the refrigerant outlet of the second recuperative chamber 162, a third refrigerant temperature of the refrigerant outlet of the first recuperative chamber 161, and a fourth refrigerant temperature of the refrigerant inlet of the evaporator 112
FIG. 2 is a flow chart illustrating a method of controlling the refrigeration system 11 of the present application according to an exemplary embodiment.
As shown in fig. 2, the control method includes:
s1, acquiring a first refrigerant temperature at a refrigerant inlet of the first heat recovery chamber 161, a second refrigerant temperature at a refrigerant outlet of the second heat recovery chamber 162, a third refrigerant temperature at a refrigerant outlet of the first heat recovery chamber 161, and a fourth refrigerant temperature at a refrigerant inlet of the evaporator 112 during an operation of the refrigeration system 11;
here, the first temperature sensor 121 is disposed at the refrigerant inlet of the first heat recovery chamber 161, the second temperature sensor 122 is disposed at the refrigerant outlet of the second heat recovery chamber 162, the third temperature sensor 123 is disposed at the refrigerant outlet of the first heat recovery chamber 161, and the fourth temperature sensor 124 is disposed at the refrigerant inlet of the evaporator 112, and when the refrigeration system 11 starts to operate, the first temperature sensor 121, the second temperature sensor 122, the third temperature sensor 123, and the fourth temperature sensor 124 start to detect the refrigerant temperatures of the refrigerant inlet of the first heat recovery chamber 161, the refrigerant outlet of the second heat recovery chamber 162, the refrigerant outlet of the first heat recovery chamber 161, and the refrigerant inlet of the evaporator 112.
In this embodiment, the first refrigerant temperature, the second refrigerant temperature, the third refrigerant temperature, and the fourth refrigerant temperature of the refrigeration system 11 are all in celsius degrees.
S2, controlling and adjusting the flow opening of the throttling device 14 according to the first refrigerant temperature at the refrigerant inlet of the first recuperating chamber 161, the second refrigerant temperature at the refrigerant outlet of the second recuperating chamber 162, the third refrigerant temperature at the refrigerant outlet of the first recuperating chamber 161, and the fourth refrigerant temperature at the refrigerant inlet of the evaporator 112.
Alternatively, the throttling device 14 may control and adjust the flow opening of the throttling device 14 according to a comparison between the temperature of the refrigerant at the refrigerant inlet of the first heat recovery chamber 161 and a preset refrigerant temperature threshold at the refrigerant inlet of the first heat recovery chamber 161, when the temperature detected by the temperature sensor at the refrigerant inlet of the first heat recovery chamber 161 is not equal to the preset refrigerant temperature threshold at the refrigerant inlet of the first heat recovery chamber 161.
Alternatively, the throttling device 14 may control and adjust the flow opening of the throttling device 14 when the temperature detected by the temperature sensor at the refrigerant outlet of the second regenerative chamber 162 is not equal to the preset refrigerant temperature threshold at the refrigerant outlet of the second regenerative chamber 162, according to the comparison between the temperature of the refrigerant at the refrigerant outlet of the second regenerative chamber 162 and the preset refrigerant temperature threshold at the refrigerant outlet of the second regenerative chamber 162.
Alternatively, the throttling device 14 may control and adjust the flow opening of the throttling device 14 according to a comparison between the refrigerant temperature at the refrigerant outlet of the first heat recovery chamber 161 and a preset refrigerant temperature threshold at the refrigerant outlet of the first heat recovery chamber 161, when the temperature detected by the refrigerant outlet temperature sensor of the first heat recovery chamber 161 is not equal to the preset refrigerant temperature threshold at the refrigerant outlet of the first heat recovery chamber 161.
Alternatively, the throttling device 14 may control and adjust the flow opening of the throttling device 14 according to a comparison between the temperature of the refrigerant at the refrigerant inlet of the evaporator 112 and a preset refrigerant temperature threshold at the refrigerant inlet of the evaporator 112, when the temperature detected by the temperature sensor at the refrigerant inlet of the evaporator 112 is not equal to the preset refrigerant temperature threshold at the refrigerant inlet of the evaporator 112.
Therefore, the throttling device can be accurately controlled, refrigerant at the outlet of the evaporator is not overheated, the heat exchange capacity of the evaporator is fully utilized, and the refrigerating system can work efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
Fig. 3 is a flow chart illustrating a method of controlling the refrigeration system 11 of the present application according to yet another exemplary embodiment.
As shown in fig. 3, the present application also provides a control method of the refrigeration system 11, including:
s201, calculating a first temperature difference value between the first refrigerant temperature and the second refrigerant temperature;
optionally, the control method of the refrigeration system 11 may include controlling and calculating a first temperature difference between the first refrigerant temperature and the second refrigerant temperature based on the first refrigerant temperature and the second refrigerant temperature, where the first refrigerant temperature is acquired at the refrigerant inlet of the first recuperation chamber 161 and the second refrigerant temperature is acquired at the refrigerant outlet of the second recuperation chamber 162.
S202, calculating a second temperature difference value between the temperature of the third refrigerant and the temperature of the fourth refrigerant;
alternatively, the control method of the refrigeration system 11 may include controlling and calculating a second temperature difference between the third refrigerant temperature and the fourth refrigerant temperature based on the acquired third refrigerant temperature at the refrigerant outlet of the first heat recovery chamber 161 and the acquired fourth refrigerant temperature at the refrigerant inlet of the evaporator 112.
And S203, controlling and adjusting the flow opening of the throttling device 14 according to the first temperature difference value, the preset first difference threshold value, the second temperature difference value and the preset second difference threshold value.
Optionally, the obtained first temperature difference is compared with a preset first difference threshold, and when the first temperature difference is not equal to the preset first difference threshold, the flow opening of the throttling device 14 is controlled to be adjusted, including when the first temperature difference is smaller than the preset first difference threshold, the flow opening of the throttling device 14 is controlled to be increased; and controlling to reduce the flow opening degree of the throttling device 14 when the first temperature difference value is larger than a preset first difference value threshold value. Here, the preset first difference threshold may be a threshold of a difference between saturation temperatures of the refrigerant inlet of the first regenerative chamber 161 and the refrigerant outlet of the second regenerative chamber 162 in a steady operation state of the refrigeration system 11.
Optionally, the obtained second temperature difference is compared with a preset second difference threshold, and when the second temperature difference is not equal to the preset second difference threshold, the flow opening of the throttling device 14 is controlled to be adjusted, including when the second temperature difference is smaller than the preset second difference threshold, the flow opening of the throttling device 14 is controlled to be increased; and controlling to reduce the flow opening degree of the throttling device 14 when the second temperature difference value is larger than a preset second difference value threshold value. Here, the preset second difference threshold may be a threshold of a difference between saturation temperatures of the refrigerant outlet of the first heat recovery chamber 161 and the refrigerant inlet of the evaporator 112 in a steady operation state of the refrigeration system 11.
Therefore, the throttling device can be accurately controlled, refrigerant at the outlet of the evaporator is not overheated, the heat exchange capacity of the evaporator is fully utilized, and the refrigerating system can work efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
Optionally, controlling and adjusting the flow opening degree of the throttling device 14 according to the first temperature difference value and a preset first difference threshold, the second temperature difference value and a preset second difference threshold, includes: when the first temperature difference is smaller than or equal to a preset first difference threshold value and the second temperature difference is smaller than or equal to a preset second difference threshold value, the flow opening of the throttling device 14 is kept unchanged.
Alternatively, when the first temperature difference is less than or equal to a preset first difference threshold, the flow opening of the throttling device 14 is kept constant.
Alternatively, when the second temperature difference is smaller than or equal to the preset second difference threshold, the flow opening degree of the throttling device 14 is kept unchanged.
Optionally, controlling and adjusting the flow opening degree of the throttling device 14 according to the first temperature difference value and a preset first difference threshold, the second temperature difference value and a preset second difference threshold, includes: and when the first temperature difference value is greater than a preset first difference threshold value and the second temperature difference value is less than a preset second difference threshold value, controlling to reduce the flow opening degree of the throttling device 14.
Alternatively, when the first temperature difference is greater than a preset first difference threshold, the flow opening of the throttling device 14 is controlled to be decreased.
Alternatively, when the second temperature difference is less than a preset second difference threshold, the flow opening of the throttling device 14 is controlled to be decreased.
Optionally, controlling and adjusting the flow opening degree of the throttling device 14 according to the first temperature difference value and a preset first difference threshold, the second temperature difference value and a preset second difference threshold, includes: and when the first temperature difference value is smaller than a preset first difference threshold value and the second temperature difference value is larger than a preset second difference threshold value, controlling to increase the flow opening of the throttling device 14.
Alternatively, when the first temperature difference is smaller than a preset first difference threshold, the control increases the flow opening of the throttling device 14.
Alternatively, when the second temperature difference is greater than a preset second difference threshold, the control increases the flow opening of the throttling device 14.
Therefore, the throttling device can be accurately controlled, refrigerant at the outlet of the evaporator is not overheated, the heat exchange capacity of the evaporator is fully utilized, and the refrigerating system can work efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
Fig. 4 is a schematic diagram illustrating the overall construction of the refrigeration system 11 of the present application, according to an exemplary embodiment.
As shown in fig. 4, the present application further provides a refrigeration system 11, where the refrigeration system 11 includes a refrigerant circulation loop formed by connecting a condenser 111 for exchanging heat with the outside, an evaporator 112 for exchanging heat with the inside, a compressor 15, and a throttling device 14, and the refrigeration system 11 further includes a heat regenerator 16, where a first heat recovery chamber 161 of the heat regenerator is connected in series with a refrigerant pipe section between the condenser 111 and the throttling device 14, and a second heat recovery chamber 162 is connected in series with a refrigerant pipe section between the evaporator 112 and the compressor 15;
the refrigeration system 11 further includes:
the first temperature sensor 121 is configured to obtain a first refrigerant temperature at a refrigerant inlet of the first heat recovery cavity 161 during an operation process of the refrigeration system 11;
the second temperature sensor 122 is configured to obtain a second refrigerant temperature at the refrigerant outlet of the second regenerative chamber 162;
a third temperature sensor 123, configured to obtain a third refrigerant temperature at the refrigerant outlet of the first heat recovery cavity 161;
a fourth temperature sensor 124 for a fourth refrigerant temperature at the refrigerant inlet of the evaporator 112;
the controller 13 is configured to control and adjust the flow opening of the throttling device 14 according to a first refrigerant temperature at the refrigerant inlet of the first recuperating chamber 161, a second refrigerant temperature at the refrigerant outlet of the second recuperating chamber 162, a third refrigerant temperature at the refrigerant outlet of the first recuperating chamber 161, and a fourth refrigerant temperature at the refrigerant inlet of the evaporator 112.
Here, the first temperature sensor 121 is disposed at the refrigerant inlet of the first heat recovery chamber 161, the second temperature sensor 122 is disposed at the refrigerant outlet of the second heat recovery chamber 162, the third temperature sensor 123 is disposed at the refrigerant outlet of the first heat recovery chamber 161, and the fourth temperature sensor 124 is disposed at the refrigerant inlet of the evaporator 112, and when the refrigeration system 11 starts to operate, the first temperature sensor 121, the second temperature sensor 122, the third temperature sensor 123, and the fourth temperature sensor 124 start to detect the refrigerant temperatures of the refrigerant inlet of the first heat recovery chamber 161, the refrigerant outlet of the second heat recovery chamber 162, the refrigerant outlet of the first heat recovery chamber 161, and the refrigerant inlet of the evaporator 112.
Therefore, the throttling device can be accurately controlled, refrigerant at the outlet of the evaporator is not overheated, the heat exchange capacity of the evaporator is fully utilized, and the refrigerating system can work efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
In an alternative embodiment, the controller 13 is specifically configured to:
calculating a first temperature difference value between the first refrigerant temperature and the second refrigerant temperature;
calculating a second temperature difference value between the temperature of the third refrigerant and the temperature of the fourth refrigerant;
and controlling and adjusting the flow opening of the throttling device 14 according to the first temperature difference value, a preset first difference value threshold value, a preset second temperature difference value and a preset second difference value threshold value.
Therefore, the throttling device can be accurately controlled, refrigerant at the outlet of the evaporator is not overheated, the heat exchange capacity of the evaporator is fully utilized, and the refrigerating system can work efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
Alternatively, in the refrigeration system 11, the evaporator 112 discharges a low-temperature low-pressure gaseous refrigerant through a refrigerant pipeline to enter the compressor 15, the refrigerant in the pipeline is compressed into a high-temperature high-pressure gaseous refrigerant by the operation of the compressor 15, and the temperature of the refrigerant entering the compressor 15 is the temperature of the low-temperature low-pressure gaseous refrigerant.
Alternatively, in the refrigeration system 11, since the low-temperature and low-pressure liquid refrigerant flows into the pipeline of the evaporator 112, passes through the evaporator 112, in actual operation, it is difficult to ensure sufficient heat exchange, and the refrigerant flowing out of the evaporator 112 may have a gas-liquid coexisting state, however, the refrigerant entering the compressor 15 is very strict, must be a gaseous refrigerant, to ensure that the refrigerant in the refrigerant line section between the evaporator 112 and the compressor 15 is entirely in a gaseous state, therefore, the refrigeration system 11 incorporates a regenerator 16, after the refrigerant flows out of the evaporator 112, the refrigerant enters the second regenerative chamber 162 of the regenerator 16, so that the refrigerant in the pipeline is fully heat-exchanged, and is completely in a gas state, after flowing out of the second regenerative chamber 162 of the regenerator 16 and entering the gaseous refrigerant suction port of the compressor 15, at this time, the suction temperature of the compressor 15 is the temperature of the low-temperature and low-pressure gaseous refrigerant entering the compressor 15.
The throttling device 14 in the refrigeration system 11 is not specifically limited in the embodiment of the present application, and may be an electronic expansion valve, which receives an electrical signal generated by the controller 13, and performs stepless-change refrigeration liquid supply control, wide liquid supply regulation range, fast regulation response, and stepless control on the flow opening.
Optionally, in the refrigeration system 11, a low-temperature low-pressure gaseous refrigerant enters the compressor 15, and through the working operation of the compressor 15, a gaseous high-temperature high-pressure gaseous refrigerant is output, enters the refrigerant pipeline, then enters the condenser 111, and through the heat exchange between the condenser 111 and the external environment, the temperature of the refrigerant is reduced, and a gaseous low-temperature high-pressure gaseous refrigerant is output, in order to reduce the flow pressure in the refrigerant pipeline, the refrigerant flowing out of the throttling device 14 is a low-temperature low-pressure liquid refrigerant through the throttling device 14, for example, through a partially reduced refrigerant pipeline, and then the low-temperature low-pressure liquid refrigerant enters the evaporator 112 to refrigerate the refrigeration portion of the refrigeration system 11, for example, the refrigeration system 11 is applied to a freezer, and the evaporator 112 refrigerates a heat preservation space in the freezer, so that a refrigeration environment is formed; if the refrigeration system 11 is used in an air conditioner, the evaporator 112 is installed in an indoor unit of the air conditioner to cool the indoor environment.
In an alternative embodiment, the controller is specifically configured to: and when the first temperature difference is smaller than or equal to a preset first difference threshold value and the second temperature difference is smaller than or equal to a preset second difference threshold value, keeping the flow opening of the throttling device unchanged.
In an alternative embodiment, the controller is specifically configured to: and when the first temperature difference value is greater than a preset first difference threshold value and the second temperature difference value is less than a preset second difference threshold value, controlling to reduce the flow opening degree of the throttling device 14.
In an alternative embodiment, the controller 13 is specifically configured to: and when the first temperature difference value is smaller than a preset first difference threshold value and the second temperature difference value is larger than a preset second difference threshold value, controlling to increase the flow opening of the throttling device 14.
Therefore, the throttling device can be accurately controlled, refrigerant at the outlet of the evaporator is not overheated, the heat exchange capacity of the evaporator is fully utilized, and the refrigerating system can work efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
The embodiment of the present disclosure further provides a refrigerator device 1, where the refrigerator device 1 includes the refrigeration system 11 according to any of the above-mentioned optional embodiments.
Herein, do not specifically limit to the model of freezer equipment 1, the evaporimeter 112 of freezer equipment 1 can be for evenly laying the inboard copper coil pipe in freezer equipment 1 box heat preservation, the fixed setting of evaporimeter 112 is in freezer equipment 1's heat preservation inboard part, if control throttling arrangement's aperture according to evaporimeter export superheat degree, because when overheated appears in refrigerating system's evaporimeter export, refrigerating system's heat transfer ability will not obtain make full use of, can lead to system heat exchange efficiency to reduce like this.
This disclosed embodiment does not specifically restrict freezer equipment 1, refrigerating system 11 can set up in freezer equipment 1's casing, among freezer equipment 1's refrigerating system, through the first refrigerant temperature of the refrigerant import of the first backheat chamber 161 who acquires, the second refrigerant temperature of the refrigerant export of second backheat chamber 162, the third refrigerant temperature of the refrigerant export of first backheat chamber 161 and the fourth refrigerant temperature of the refrigerant import of evaporimeter, calculate, judge, the flow aperture of control adjustment throttling arrangement, and like this, the overheated condition appears in the exit of the evaporimeter that need not refrigerating system, just can implement accurate control to throttling arrangement, guarantee that evaporimeter export refrigerant is not overheated, make full use of the heat transfer ability of evaporimeter, make refrigerating system work high-efficiently. The problem of low system efficiency caused by overheating of refrigerant at the outlet of the evaporator, which is caused by a conventional method for controlling the opening of the throttling device according to the superheat degree of the outlet of the evaporator, is solved.
The disclosed embodiments provide a computer-readable storage medium storing computer-executable instructions configured to perform a method of controlling a refrigeration system according to any of the above-described alternative embodiments.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform a method of controlling a refrigeration system of any of the above optional embodiments.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
An embodiment of the present disclosure provides an electronic device, a structure of which is shown in fig. 5, and the electronic device includes:
at least one processor (processor)500, such as processor 500 in FIG. 5; and a memory (memory)501, and may further include a Communication Interface 502 and a bus 503. The processor 500, the communication interface 502, and the memory 501 may communicate with each other via a bus 503. Communication interface 502 may be used for information transfer. The processor 500 may call logic instructions in the memory 501 to perform the control method of the refrigeration system of the above-described embodiment.
In addition, the logic instructions in the memory 501 may be implemented in the form of software functional units and may be stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 501 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 500 executes functional applications and data processing by executing software programs, instructions and modules stored in the memory 501, so as to implement the control method of the refrigeration system in the above method embodiment.
The memory 501 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 501 may include a high-speed random access memory and may also include a nonvolatile memory.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
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| JP4112090B2 (en) * | 1998-09-04 | 2008-07-02 | 中部電力株式会社 | Heat pump equipment |
| CN100494829C (en) * | 2004-05-20 | 2009-06-03 | 上海交通大学 | High-efficiency refrigeration system in which the refrigerant at the outlet of the evaporator is in a two-phase state with a high dryness |
| CN200982764Y (en) * | 2006-12-09 | 2007-11-28 | 奇瑞汽车有限公司 | Automobile air conditioner |
| JP4948374B2 (en) * | 2007-11-30 | 2012-06-06 | 三菱電機株式会社 | Refrigeration cycle equipment |
| CN101979938A (en) * | 2010-11-29 | 2011-02-23 | 四川长虹空调有限公司 | Backheating method and backheating structure for heat pump air conditioner |
| CN106610145A (en) * | 2015-10-21 | 2017-05-03 | 青岛海尔新能源电器有限公司 | Air source heat pump heating system and control method thereof |
| CN105698424B (en) * | 2016-04-18 | 2018-03-13 | 迪邦仕冷却技术（苏州）有限公司 | A kind of super low temperature refrigeration method |
| CN106440586A (en) * | 2016-09-08 | 2017-02-22 | 赵向辉 | Method for controlling evaporator outlet refrigerant to be low in superheat degree or smaller than 1 in dryness |
| CN208365853U (en) * | 2018-04-11 | 2019-01-11 | 广州市庆瑞电子科技有限公司 | A kind of refrigerating system |
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