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Refrigerant filling device and refrigerant filling method

A filling device and refrigerant technology, applied in refrigerators, heating methods, refrigeration components, etc., can solve the problems of large volume, heavy weight, affecting the use effect of air conditioners, etc.

Inactive Publication Date: 2020-04-17
NINGBO AUX ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inaccurate air-conditioning refrigerant filling will increase the energy efficiency of the air-conditioning, affect the use of the air-conditioning, and even lead to air-conditioning failure, damage, explosion, etc.
When the maintenance master fills the air conditioner with refrigerant, he usually judges the refrigerant filling amount based on experience. The filling error is large and uncontrollable, and there are potential safety hazards
The refrigerant filling machine can achieve precise filling, but the filling machine is large in size and heavy in weight, making it difficult to use for after-sales maintenance

Method used

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  • Refrigerant filling device and refrigerant filling method
  • Refrigerant filling device and refrigerant filling method
  • Refrigerant filling device and refrigerant filling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a refrigerant filling device, which includes a refrigerant storage tank 1 , a first temperature sensor 2 , a controller 3 and a solenoid valve 4 . Both the first temperature sensor 2 and the solenoid valve 4 are connected to the controller 3, and the solenoid valve 4 connects the refrigerant storage tank 1 and the air conditioning unit.

[0031] The refrigerant storage tank 1 is used for storing refrigerant, and the type of refrigerant stored therein is the same as that used by the air conditioner to be filled.

[0032] The first temperature sensor 2 is used to detect the actual discharge temperature of the compressor to be filled with air conditioner. The first temperature sensor 2 is arranged on the outer wall of the exhaust pipe of the outdoor unit of the air conditioning unit. The discharge temperature of the compressor is a key indicator reflecting the operating state of the air conditioner. In this embodiment, the refrigerant filling amou...

Embodiment 2

[0037] This embodiment provides a refrigerant filling device. Compared with the refrigerant filling device provided in Embodiment 1, the refrigerant filling device of this embodiment further includes a second temperature sensor 5 and a third temperature sensor 6 .

[0038] The second temperature sensor 5 is used to detect the outdoor ambient temperature. The second temperature sensor 5 is placed, for example, on the air intake side of the outdoor unit of the air conditioning unit.

[0039] The third temperature sensor 6 is used to detect the indoor ambient temperature. The third temperature sensor 6 is placed, for example, at the return air outlet of the indoor unit of the air conditioning unit.

[0040] The controller 3 is used to calculate the target exhaust temperature according to the outdoor ambient temperature detected by the second temperature sensor 5 and the indoor ambient temperature detected by the third temperature sensor 6 by using a preset fitting function, and ...

Embodiment 3

[0046] This embodiment provides a refrigerant filling device. Compared with the refrigerant filling device provided in Embodiment 1, the refrigerant filling device of this embodiment further includes a first pressure sensor 7 and a display 8 . Both the first pressure sensor 7 and the display 8 are connected to the controller 3 .

[0047] The first pressure sensor 7 is used to detect the first pressure in the refrigerant storage tank 1 and send the detected first pressure to the controller 3 . The first pressure sensor 7 is provided, for example, in the refrigerant storage tank 1 .

[0048] The controller 3 is also used to judge whether the first pressure is within a preset range. In this embodiment, for example, the upper limit value P of the pressure in the refrigerant storage tank 1 is pre-stored in the controller 3 max and the pressure lower limit P min , the preset range is (P min , P max ). P min The minimum pressure to ensure the normal operation of the refrigeran...

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Abstract

The invention provides a refrigerant filling device and a refrigerant filling method. The refrigerant filling device comprises a refrigerant storage tank (1), a first temperature sensor (2), a controller (3) and an electromagnetic valve (4), wherein the refrigerant storage tank (1) is used for storing a refrigerant; the first temperature sensor (2) is used for detecting an actual exhausting temperature of a compressor; the controller (3) is used for generating a control command according to a target exhausting temperature and the actual exhausting temperature; and the electromagnetic valve (4)is used for adding the refrigerant into an air conditioning unit according to the control command or stopping adding the refrigerant into the air conditioning unit according to the control command. By controlling filling of the refrigerant automatically according to the exhausting temperature, the size and weight of the filling device can be reduced while the filling precision is guaranteed.

Description

technical field [0001] The present disclosure relates to the technical field of air conditioning, in particular, to a refrigerant filling device and method. Background technique [0002] With the development of society, the use of air conditioners is increasing year by year, and the number of after-sales maintenance of air conditioners is also increasing. Filling refrigerant for air conditioners is a common task in after-sales maintenance of air conditioners. Inaccurate filling of air-conditioning refrigerant will increase the energy efficiency of the air-conditioning, affect the performance of the air-conditioning, and even lead to air-conditioning failure, damage, explosion, etc. When the maintenance master fills the air conditioner with refrigerant, he usually judges the refrigerant filling amount based on experience. The filling error is large and uncontrollable, and there are potential safety hazards. The refrigerant filling machine can achieve precise filling, but the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/32F24F11/64F24F11/65F24F11/84F24F11/85F25B45/00F24F110/10F24F110/12F24F140/12F24F140/20
CPCF24F11/32F24F11/64F24F11/65F24F11/84F24F11/85F25B45/00F24F2110/10F24F2110/12F24F2140/12F24F2140/20
Inventor 张新明王成周涯宸
Owner NINGBO AUX ELECTRIC
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