CN112797698A - Refrigerating system suitable for double-layer high-low temperature test chamber and control method thereof - Google Patents

Refrigerating system suitable for double-layer high-low temperature test chamber and control method thereof Download PDF

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Publication number
CN112797698A
CN112797698A CN202110162961.2A CN202110162961A CN112797698A CN 112797698 A CN112797698 A CN 112797698A CN 202110162961 A CN202110162961 A CN 202110162961A CN 112797698 A CN112797698 A CN 112797698A
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CN
China
Prior art keywords
low temperature
double
box body
temperature test
chamber
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Pending
Application number
CN202110162961.2A
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Chinese (zh)
Inventor
万先锋
方肖
蔡文城
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Guangzhou Clement Technology Co ltd
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Guangzhou Clement Technology Co ltd
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Priority to CN202110162961.2A priority Critical patent/CN112797698A/en
Publication of CN112797698A publication Critical patent/CN112797698A/en
Pending legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

The invention discloses a refrigerating system suitable for a double-layer high-low temperature test box and a control method thereof. According to the double-layer high-low temperature test box, the control system controls the on-off of the electromagnetic valve so as to control the operation of the refrigerating system, a set of refrigerating system can refrigerate two independent box bodies, the two test boxes can work simultaneously but cannot interfere with each other, the utilization rate of the box bodies is fully excavated, the utilization rate of the refrigerating system is improved, the refrigerating system is controlled simply, the manufacturing cost of the test boxes is reduced, and the purpose of saving energy is achieved.

Description

Refrigerating system suitable for double-layer high-low temperature test chamber and control method thereof
Technical Field
The invention relates to the field of test boxes, in particular to a refrigerating system suitable for a double-layer high-low temperature test box and a control method thereof.
Background
The high-low temperature test box is suitable for high-temperature and low-temperature reliability tests of industrial products. The performance indexes of parts and materials of related products such as electronics, electricians, automobiles, motorcycles, aerospace, ships, weapons, universities, scientific research institutions and the like are tested under the condition of high-temperature and low-temperature cyclic change.
When a low-temperature test is performed in the high-low temperature test box, a refrigeration system is needed, and the refrigeration system is a system for transferring heat from a substance (or environment) with higher temperature to a substance (or environment) with lower temperature by using external energy. The working principle of the device is that heat exchange is carried out through state change. The existing two-box type high-low temperature test box has the problems that the cost of the test box is high, the system control is complex and the energy consumption is high because each box body in the test box is independently provided with a refrigerating system.
The above disadvantages need to be improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a refrigeration system suitable for a double-layer high-low temperature test chamber and a control method thereof.
The technical scheme of the invention is as follows:
the utility model provides a refrigerating system who is fit for double-deck high low temperature test chamber, includes refrigeration subassembly, first evaporimeter, second evaporimeter, first solenoid valve and second solenoid valve, the refrigeration subassembly passes through first solenoid valve with first evaporimeter is connected, the refrigeration subassembly passes through the second solenoid valve with the second evaporimeter is connected, first evaporimeter is located the first box, the second evaporimeter is located the second box, first box with the second box sets up side by side from top to bottom in double-deck high low temperature test chamber, still be provided with heating device, control system and power supply system in the double-deck high low temperature test chamber, heating device, refrigerating system respectively with control system electric connection.
The refrigeration assembly comprises a compressor, a condenser, a precooler, an oil separator and a liquid storage device, wherein the precooler, the condenser, the oil separator, the compressor, the liquid storage device and the evaporator are connected through pipelines, and the liquid storage device is respectively connected with the first evaporator and the second evaporator.
The invention according to the scheme is characterized in that sample frames are arranged in the first box body and the second box body, a heat insulation foaming plate is arranged between each sample frame and the corresponding box body, and an evaporator and the heating device are arranged on one side of each sample frame.
The invention according to the scheme is characterized in that a pressure relief device and a blowing device are respectively installed on one side of the first box body and one side of the second box body, the pressure relief device comprises a protective cover, pressure relief holes and a baffle, the pressure relief holes are respectively and uniformly formed in two ends of the protective cover, the baffle is arranged below the protective cover, and a blowing motor and fan blades connected to the blowing motor are arranged in the blowing device.
The invention according to the above scheme is characterized in that test holes are respectively formed in the other side of the first box body and the other side of the second box body.
The invention according to the scheme is characterized in that the first box body and the second box body are respectively connected with an explosion-proof box door, and the explosion-proof box door is provided with an observation window.
The explosion-proof box door is characterized in that a control panel is arranged on one side of the explosion-proof box door and connected with the control system, and a display screen, an over-temperature protector, a cumulative timer and an emergency stop button are arranged on the control panel.
The invention according to the scheme is characterized in that the double-layer high-low temperature test box is further provided with a mechanical chamber and a power distribution cabinet, the refrigerating assembly is installed in the mechanical chamber, the heat dissipation fan is further installed above the mechanical chamber, and the control system and the power supply system are arranged in the power distribution cabinet.
A control method of a refrigerating system suitable for double-layer high-low temperature test boxes is characterized in that a temperature and humidity value required by each test box is set on a control panel, and the control system automatically adjusts the operation condition of the refrigerating system according to test conditions.
The invention according to the above scheme is characterized in that the operation conditions of the refrigeration system comprise:
only the first box body is refrigerated, the control system controls the first electromagnetic valve to be switched on, the second electromagnetic valve is switched off, and cold air released by the refrigeration system in operation circulates in the first box body;
only the second box body is refrigerated, the control system controls the first electromagnetic valve to be switched off, the second electromagnetic valve is switched on, and cold air released by the operation of the refrigerating system circulates in the second box body;
refrigerating the first box body and the second box body, controlling the first electromagnetic valve and the second electromagnetic valve to be communicated by a control system, and circulating cold air released by the operation of the refrigerating system in the first box body and the second box body;
the first box body and the second box body are not refrigerated, the control system controls the first electromagnetic valve and the second electromagnetic valve to be disconnected, and the refrigeration system stops running.
According to the double-layer high-low temperature test box disclosed by the scheme, the control system controls the on-off of the electromagnetic valve so as to control the operation of the refrigerating system, a set of refrigerating system can refrigerate two independent box bodies, the two test boxes can work simultaneously but cannot interfere with each other, the utilization rate of the box bodies is fully excavated, the utilization rate of the refrigerating system is improved, the refrigerating system is simple to control, the manufacturing cost of the test boxes is reduced, and the purpose of saving energy is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a block diagram of a refrigeration system of the present invention;
FIG. 2 is a schematic view of the refrigeration assembly of the present invention;
FIG. 3 is a side view of the refrigeration assembly construction of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic view of a double-layered high-low temperature test chamber according to the present invention;
FIG. 6 is another schematic view structure of the double-layer high-low temperature test chamber of the present invention.
In the figures, the various reference numbers:
10. a first box body, 20, a second box body, 30, a mechanical chamber, 31, a heat radiation fan, 40, a power distribution cabinet, 50, a pressure relief device, 51, a protective cover, 52, a pressure relief hole, 53, a baffle, 60, a blowing device, 70, a test hole, 80, an explosion-proof box door, 81, an observation window, 82 and a control panel,
101. compressor, 102, condenser, 103, precooler, 104, oil separator, 105 and reservoir.
Detailed Description
The invention is further described with reference to the following figures and embodiments:
it should be noted that the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features.
As shown in fig. 1, a refrigerating system suitable for double-deck high low temperature test chamber, including refrigeration subassembly, first evaporimeter, the second evaporimeter, first solenoid valve and second solenoid valve, refrigeration subassembly passes through first solenoid valve and is connected with first evaporimeter, refrigeration subassembly passes through the second solenoid valve and is connected with the second evaporimeter, first evaporimeter is located first box 10, the second evaporimeter is located second box 20, first box 10 and second box 20 set up side by side in double-deck high low temperature test chamber, still be provided with heating device in the double-deck high low temperature test chamber, control system and power supply system, heating device, refrigerating system respectively with control system electric connection.
The double-layer high-low temperature test box controls the operation of the refrigerating system through the on-off of the electromagnetic valve, realizes the control of two independent box bodies by one set of refrigerating system, and improves the utilization rate of the refrigerating system.
As shown in fig. 2 to 4, the refrigeration assembly includes a compressor 101 and a condenser 102, the compressor 101, the condenser 102 and the evaporator are connected by pipes to form a circulation refrigeration system, and a precooler 103 is disposed between the evaporator and the condenser 102 to increase the cooling speed and improve the refrigeration effect. An oil separator 104 is provided between the compressor 101 and the condenser 102 to separate the lubricating oil mixed in the refrigerant vapor to improve the refrigerating effect. The accumulator 105 is installed at a suction port of the compressor 101 to ensure that only gaseous refrigerant is allowed to enter the compressor 101.
As shown in fig. 5 to 6, the box body shell of the double-layer high-low temperature test box is made of a steel plate, and plastic spraying is performed on the surface of the steel plate. The double-layer high-low temperature test box comprises a first box body 10 and a second box body 20 which are arranged up and down, wherein sample frames are arranged in the first box body 10 and the second box body 20, and the sample frames are made of stainless steel and easy to clean. The sample frame and the corresponding box body are provided with a heat insulation foaming plate, the first evaporator and the second evaporator are respectively arranged on one side of the sample frame, the first box body 10 and the second box body 20 are respectively internally provided with a heating device, and the heating device heats to provide warm air circulation for the test box.
A pressure relief device 50 and a blowing device 60 are respectively installed at one side of the first box 10 and one side of the second box 20, the pressure relief device 50 comprises a protective cover 51, pressure relief holes 52 and a baffle 53, a plurality of pressure relief holes 52 are respectively and uniformly arranged above and below the protective cover 51, the pressure relief holes 52 are waist-shaped holes, and the baffle 53 is arranged below the protective cover 51. If in the testing process, the baffle 53 of pressure release hole 52 can bounce when the sample explodes, and the pressure in the test box body is discharged from pressure release hole 52 rapidly, and the effect of protection casing 51 is protected pressure release hole 52, prevents to let out to explode and assaults directly to cause the harm to the roof. The blowing device 60 is internally provided with a blowing motor and fan blades connected to the blowing motor, and the blowing device 60 is started to keep the circulation ventilation in the box body.
The other side of the first box 10 and the other side of the second box 20 are respectively provided with a testing hole 70, and the testing holes 70 are used for being externally connected with a testing power line or a signal line, so that the special detected sample can be monitored in real time.
The first box body 10 and the second box body 20 are respectively connected with an explosion-proof box door 80, the explosion-proof box door 80 is provided with an observation window 81, and the observation window 81 is convenient for testers to observe the sample test condition inside the test box at any time so as to control the test process.
One side of explosion-proof box door 80 is provided with control panel 82, and control panel 82 is connected with control system, is equipped with display screen, overtemperature prote ware, cumulant ware and scram button on control panel 82. Parameters inside the test chamber, such as various performance indexes of the test sample, the internal environment state of the test chamber, and the like, are displayed on the display screen. The overtemperature protector can implement secondary protection for overtemperature in the box body when the temperature of the controller fails, and the emergency stop button is pressed to stop the test box to run, so that the overtemperature protector plays a role in overtemperature protection. The time accumulator can preset time for a certain sample test, corresponding signals are output to the control system when the preset time is reached, and the test box carries out corresponding operation.
Still be provided with machine room 30 and switch board 40 in the double-deck high low temperature test case, radiator fan 31 is installed to the top of machine room 30, and outside air inhales in the machine room 30, dredges away the hot-air through radiator fan 31, keeps the inside circulation of air of machine room 30, ensures that the inside temperature of machine room 30 is normal. Still install the maintenance frame in the machine room 30, install refrigeration subassembly on the maintenance frame, in the use, if refrigeration subassembly has the damage, the accessible is unpacked apart maintenance frame apron and can be maintained refrigeration subassembly, is provided with control system and power supply system in the switch board 40.
Only one set of refrigerating system is arranged in the double-layer high-low temperature test box, and the refrigerating system can be operated for the first box body 10 and the second box body 20 independently by controlling the on-off of the electromagnetic valve. The sample that will need to do high microthermal before the experiment is placed on the sample frame, carries out humiture value on control panel 82 to first box 10 and second box 20 respectively and sets for, and control system can the operation of independent control refrigerating system and heating device.
Firstly, the sample in the first box 10 needs low temperature test, the sample in the second box 20 needs high temperature test, the control system controls the first electromagnetic valve of the first box 10 to be switched on, the second electromagnetic valve of the second box 20 is switched off and starts the heating device to heat, cold air released by the refrigeration system in operation circulates in the first box 10, warm air released by the heating device circulates in the second box 20, the sample in the first box 10 is subjected to high temperature test, the sample in the second box 20 is subjected to low temperature test, if a specified temperature set value is reached, the control system controls the refrigeration system to stop refrigerating, the heating device is controlled to stop heating, and the test result in the test box can be displayed through the control panel 82.
The second, the sample in the first box 10 needs the high temperature test, the sample in the second box 20 needs the low temperature test, control system controls the first solenoid valve disconnection of first box 10 and starts the heating device heating, the second solenoid valve switch-on of second box 20, the warm braw of heating device release is at first box 10 internal loop, the cold wind of refrigerating system operation release is at second box 20 internal loop, it carries out the high temperature test to realize the sample in the first box 10, the sample in the second box 20 carries out the low temperature test, accessible control panel 82 shows the experimental result in the experimental box.
Thirdly, the samples in the first box body 10 and the second box body 20 need low-temperature testing, the control system controls the first electromagnetic valve and the second electromagnetic valve to be switched on, the refrigeration system runs, cold air circulates in the first box body 10 and the second box body 20, the first box body 10 and the second box body 20 respectively carry out low-temperature testing on the samples, and the testing results in the testing box bodies can be displayed through the control panel 82.
Fourthly, the samples in the first box body 10 and the second box body 20 need high-temperature testing, the control system controls the first electromagnetic valve and the second electromagnetic valve to be disconnected, the refrigeration system stops running, the heating device heats, hot air circulates in the first box body 10 and the second box body 20, the first box body 10 and the second box body 20 perform high-temperature testing on the samples respectively, and the testing results in the testing box bodies can be displayed through the control panel 82.
The temperature and humidity value is set for each test box through the controller, the refrigeration system is controlled through the electromagnetic valve, the refrigeration system can refrigerate for two independent boxes, the two test boxes can work simultaneously but cannot interfere with each other, the utilization rate of the boxes is fully excavated, the utilization rate of the refrigeration system is improved, and the purpose of saving energy is achieved.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
The invention is described above with reference to the accompanying drawings, which are illustrative, and it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other fields without modification.

Claims (10)

1. The utility model provides a refrigerating system who is fit for double-deck high low temperature test chamber, its characterized in that, includes refrigeration subassembly, first evaporimeter, second evaporimeter, first solenoid valve and second solenoid valve, the refrigeration subassembly passes through first solenoid valve with first evaporimeter is connected, the refrigeration subassembly passes through the second solenoid valve with the second evaporimeter is connected, first evaporimeter is located the first box, the second evaporimeter is located the second box, first box with the second box sets up side by side from top to bottom in double-deck high low temperature test chamber, still be provided with heating device, control system and power supply system in the double-deck high low temperature test chamber, heating device, refrigerating system respectively with control system electric connection.
2. The refrigeration system suitable for the double-layer high-low temperature test chamber as claimed in claim 1, wherein the refrigeration assembly comprises a compressor, a condenser, a precooler, an oil separator and a liquid storage device, the precooler, the condenser, the oil separator, the compressor and the liquid storage device are connected through pipelines, and the liquid storage device is connected with the first evaporator and the second evaporator respectively.
3. The refrigerating system suitable for the double-layer high-low temperature test chamber as claimed in claim 1, wherein a sample holder is arranged in each of the first box body and the second box body, a heat insulation foaming plate is arranged between each sample holder and the corresponding box body, and an evaporator and the heating device are arranged on one side of each sample holder.
4. The refrigerating system suitable for the double-layer high-low temperature test chamber as claimed in claim 1, wherein a pressure relief device and a blowing device are respectively installed on one side of the first chamber and one side of the second chamber, the pressure relief device comprises a protective cover, pressure relief holes and a baffle, a plurality of pressure relief holes are respectively and uniformly arranged at two ends of the protective cover, the baffle is arranged below the protective cover, and a blowing motor and a fan blade connected to the blowing motor are arranged in the blowing device.
5. The refrigerating system suitable for the double-layer high-low temperature test chamber as claimed in claim 4, wherein the other side of the first chamber and the other side of the second chamber are respectively provided with a test hole.
6. The refrigerating system suitable for the double-layer high-low temperature test chamber as recited in claim 1, wherein an explosion-proof chamber door is connected to each of the first chamber and the second chamber, and an observation window is arranged on each explosion-proof chamber door.
7. The refrigerating system suitable for the double-layer high-low temperature test chamber as claimed in claim 6, wherein a control panel is arranged on one side of the explosion-proof chamber door, the control panel is connected with the control system, and a display screen, an over-temperature protector, a cumulative timer and an emergency stop button are arranged on the control panel.
8. The refrigerating system suitable for the double-layer high-low temperature test chamber as claimed in claim 1, wherein the double-layer high-low temperature test chamber is further provided with a mechanical chamber and a power distribution cabinet, the refrigerating assembly is installed in the mechanical chamber, a heat dissipation fan is further installed above the mechanical chamber, and the control system and the power supply system are arranged in the power distribution cabinet.
9. A control method of a refrigerating system suitable for a double-layer high-low temperature test chamber is characterized by comprising the refrigerating system suitable for the double-layer high-low temperature test chamber as claimed in any one of claims 1 to 8, the temperature and humidity value required by each test chamber is set on a control panel, and the control system automatically adjusts the operation condition of the refrigerating system according to the test conditions.
10. The method for controlling a refrigeration system suitable for a double-deck high-low temperature test chamber as claimed in claim 9, wherein the operation condition of the refrigeration system comprises:
only the first box body is refrigerated, the control system controls the first electromagnetic valve to be switched on, the second electromagnetic valve is switched off, and cold air released by the refrigeration system in operation circulates in the first box body;
only the second box body is refrigerated, the control system controls the first electromagnetic valve to be switched off, the second electromagnetic valve is switched on, and cold air released by the operation of the refrigerating system circulates in the second box body;
refrigerating the first box body and the second box body, controlling the first electromagnetic valve and the second electromagnetic valve to be communicated by a control system, and circulating cold air released by the operation of the refrigerating system in the first box body and the second box body;
the first box body and the second box body are not refrigerated, the control system controls the first electromagnetic valve and the second electromagnetic valve to be disconnected, and the refrigeration system stops running.
CN202110162961.2A 2021-02-05 2021-02-05 Refrigerating system suitable for double-layer high-low temperature test chamber and control method thereof Pending CN112797698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110162961.2A CN112797698A (en) 2021-02-05 2021-02-05 Refrigerating system suitable for double-layer high-low temperature test chamber and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110162961.2A CN112797698A (en) 2021-02-05 2021-02-05 Refrigerating system suitable for double-layer high-low temperature test chamber and control method thereof

Publications (1)

Publication Number Publication Date
CN112797698A true CN112797698A (en) 2021-05-14

Family

ID=75814460

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110162961.2A Pending CN112797698A (en) 2021-02-05 2021-02-05 Refrigerating system suitable for double-layer high-low temperature test chamber and control method thereof

Country Status (1)

Country Link
CN (1) CN112797698A (en)

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