Control method and device for electronic expansion valves of multiple chambers of refrigerating system and refrigerating system

An electronic expansion valve and refrigeration system technology, which is applied in the control of multi-chamber electronic expansion valves in refrigeration systems, and in the field of refrigeration systems, can solve the problem that the energy consumption of refrigeration systems cannot be effectively reduced, affecting the energy-saving effect of refrigeration systems, and the energy consumption of refrigeration systems. major issues

Active Publication Date: 2021-08-20
JIANGSU TUOMILUO ENVIRONMENTAL TEST EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing control method of the multi-chamber electronic expansion valve in the refrigeration system is usually to adjust the opening of the electronic expansion valve within a certain range in order to prevent the temperature fluctuation of the compartments, such as adjusting the opening of th...

Method used

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  • Control method and device for electronic expansion valves of multiple chambers of refrigerating system and refrigerating system
  • Control method and device for electronic expansion valves of multiple chambers of refrigerating system and refrigerating system
  • Control method and device for electronic expansion valves of multiple chambers of refrigerating system and refrigerating system

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Embodiment 1

[0047] figure 1 It is a flow chart of a control method for multi-chamber electronic expansion valves in a refrigeration system provided by Embodiment 1 of the present invention. This embodiment is applicable to the control of electronic expansion valves in various chambers of a refrigeration system. The method can be composed of The control device of the multi-chamber electronic expansion valve of the refrigeration system can be implemented, and the device can be integrated in the controller of the refrigeration system. The method specifically includes the following steps:

[0048] Step 110, acquiring the running state of the compressor, the opening degree of the electronic expansion valve set in the thermal bypass, and the actual temperature of each compartment; wherein, each compartment is set with a corresponding preset target temperature.

[0049] Specifically, each chamber in the refrigeration system is equipped with at least two electronic expansion valves, and each cham...

Embodiment 2

[0056] figure 2 It is a flow chart of a method for controlling electronic expansion valves in multiple compartments of a refrigeration system provided by Embodiment 2 of the present invention. This embodiment is applicable to aspects such as controlling electronic expansion valves in various compartments of a refrigeration system. The method can be composed of The control device of the multi-chamber electronic expansion valve of the refrigeration system can be implemented, and the device can be integrated in the controller of the refrigeration system. The method specifically includes the following steps:

[0057] Step 210, acquiring the operating state of the compressor, the opening degree of the electronic expansion valve set in the thermal bypass, and the actual temperature of each compartment; wherein, each compartment is set with a corresponding preset target temperature.

[0058] specific, image 3 It is a structural schematic diagram of a refrigeration system provided ...

Embodiment 3

[0076] Figure 4 It is a structural block diagram of a control device for multi-chamber electronic expansion valves in a refrigeration system provided in Embodiment 3 of the present invention. Each chamber in the refrigeration system is equipped with at least two electronic expansion valves, and each chamber passes through a different The passage is connected to the compressor in the refrigeration system, and there are at least two passages between the compressor and each compartment, and electronic expansion valves are installed in the passages between each compartment and the compressor; at least one electronic expansion valve corresponding to the compartment is set on In the thermal bypass between the compressor and the compartment in the refrigeration system, at least one electronic expansion valve corresponding to the compartment is set in the passage where the compressor communicates with the compartment through the condenser; the electronic expansion valve set in the the...

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Abstract

The invention discloses a control method and device for electronic expansion valves of multiple chambers of a refrigerating system and the refrigerating system. The control method comprises the following steps that 1, the running state of a compressor, the opening degree of the electronic expansion valves arranged in a thermal bypass and the actual temperature of each chamber are obtained, wherein each chamber is provided with a corresponding preset target temperature; 2, according to the actual temperature of each chamber, the temperature difference between the actual temperature of each chamber and the corresponding preset target temperature is determined; and 3, according to the running state of the compressor, the temperature difference and the current opening values of the electronic expansion valves which correspond to the chambers and are arranged in the thermal bypass, the opening values of the electronic expansion valves which correspond to the chambers and are arranged in the thermal bypass are controlled to be increased to a first preset value or decreased to a second preset value. According to the control method and device for the electronic expansion valves of the multiple chambers of the refrigerating system and the refrigerating system, heating output can be reduced, the purpose of saving energy is achieved, oil return of the compressor is easy, and the compressor is protected.

Description

technical field [0001] Embodiments of the present invention relate to refrigeration technology, in particular to a method and device for controlling a multi-chamber electronic expansion valve in a refrigeration system, and a refrigeration system. Background technique [0002] In the refrigeration system, for the refrigeration system of the environmental test equipment applied to the battery test, such as a multi-chamber refrigeration system, generally when the temperature of at least one chamber is constant for a long time, the refrigeration system and the heating system need to be operated simultaneously to keep the temperature constant. When the cooling capacity output by the refrigeration system is greater, the heating capacity output by the heating system is also greater, which consumes a lot of energy. Therefore, it is necessary to adjust the opening degree of the electronic expansion valve corresponding to the compartment, such as the thermal bypass electronic expansio...

Claims

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Application Information

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IPC IPC(8): F25B41/34F25B49/02
CPCF25B49/02F25B41/34F25B49/022Y02B30/70
Inventor 叶昊浔周栋
Owner JIANGSU TUOMILUO ENVIRONMENTAL TEST EQUIP CO LTD
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