CN-121993918-A - Heat pump air conditioning system

CN121993918ACN 121993918 ACN121993918 ACN 121993918ACN-121993918-A

Abstract

The invention discloses a heat pump air conditioning system which comprises a compressor, a four-way reversing valve, an indoor heat exchanger, an outdoor heat exchanger, a refrigerant storage, a branch pipeline and an adjustable on-off device, wherein the four-way reversing valve is connected with the compressor and is configured to change the flow direction of a refrigerant, the indoor heat exchanger is connected with the four-way reversing valve, the outdoor heat exchanger is connected with the four-way reversing valve, the refrigerant storage is configured to store the refrigerant flowing through, the first pipeline is configured to connect the outdoor heat exchanger with the indoor heat exchanger, the branch pipeline is configured to connect the refrigerant storage with the first pipeline to form a refrigerant flow path, and the adjustable on-off device is arranged on the first pipeline and is configured to adjust the flow rate of the refrigerant flowing through the refrigerant storage so as to adjust the circulation quantity of the refrigerant in the air conditioning system. The air conditioning system can realize dynamic adjustment of the refrigerant circulation quantity so as to meet the requirements of the air conditioning system on the refrigerant quantity under different working conditions.

Inventors

YU LUDA
DONG CHEN
LI DONGZHE
YANG YIMING
CHEN WEIXING

Assignees

青岛海信日立空调系统有限公司

Dates

Publication Date: 20260508
Application Date: 20241104

Claims (10)

1. A heat pump air conditioning system, comprising: A compressor; the four-way reversing valve is connected with the compressor and is configured to change the flow direction of the refrigerant; the indoor heat exchanger is connected with the four-way reversing valve; the outdoor heat exchanger is connected with the four-way reversing valve; A refrigerant storage configured to store a flowing refrigerant; a first pipe configured to connect the outdoor heat exchanger and the indoor heat exchanger; a branch pipe configured to connect the refrigerant reservoir and the first pipe to form a refrigerant flow path; The adjustable on-off device is arranged on the first pipeline and is configured to adjust the flow rate of the refrigerant flowing through the refrigerant storage so as to adjust the circulation amount of the refrigerant in the air conditioning system.
2. The heat pump air conditioning system according to claim 1, wherein, The air conditioning system further comprises a first throttling device, wherein the first throttling device is arranged on the first pipeline, and the first throttling device is arranged on one side close to the outdoor heat exchanger; The air conditioning system further comprises a second throttling device, the second throttling device is arranged on the first pipeline, and the second throttling device is arranged on one side close to the indoor heat exchanger; the adjustable on-off device is arranged between the first throttling device and the second throttling device; The branch pipeline comprises a first sub-branch pipeline, a first end of the first sub-branch pipeline is connected with a first end of the refrigerant storage, and a second end of the first sub-branch pipeline is connected with the first pipeline between the first throttling device and the adjustable on-off device; the branch pipeline comprises a second sub-branch pipeline, a first end of the second sub-branch pipeline is connected with a second end of the refrigerant storage, and a second end of the second sub-branch pipeline is connected with a first pipeline between the second throttling device and the adjustable on-off device.
3. The heat pump air conditioning system according to claim 2, wherein, The air conditioning system is provided with a first refrigerant adjusting mode, the opening degree of the adjustable on-off device is increased, the branch pipeline is conducted, and the flow rate of the refrigerant flowing through the refrigerant storage is reduced, so that the circulation rate of the refrigerant in the air conditioning system is increased.
4. The heat pump air conditioning system according to claim 2, wherein, The air conditioning system is provided with a second refrigerant adjusting mode, the opening degree of the adjustable on-off device is reduced, the branch pipeline is communicated, and the refrigerant flow flowing through the refrigerant storage is increased, so that the refrigerant circulation quantity in the air conditioning system is reduced.
5. The heat pump air conditioning system according to claim 2, wherein, The air conditioning system is provided with a third refrigerant adjusting mode, the opening of the adjustable on-off device is increased to the limit position, the branch pipeline is closed, and the refrigerant is prevented from flowing through the refrigerant storage, so that the circulation amount of the refrigerant in the air conditioning system is increased.
6. The heat pump air conditioning system according to claim 2, wherein, The refrigerant storage comprises a plurality of heat exchange tubes, the heat exchange tubes are configured to flow through the refrigerant, and the heat exchange tubes are provided with radiating fins.
7. The heat pump air conditioning system according to claim 6, wherein, The air conditioning system is provided with a fourth refrigerant adjusting mode, the adjustable on-off device is closed, the branch pipeline is conducted, the first throttling device does not throttle, and the second throttling device throttles so that the refrigerant storage exchanges heat with the refrigerant flowing through.
8. The heat pump air conditioning system according to any of claims 2 to 7, characterized in that, The refrigerant storage is arranged at the bottom of the outdoor heat exchanger; the air conditioning system further comprises a bypass pipeline, the bypass pipeline is connected between the exhaust end pipeline of the compressor and the second sub-branch pipeline, and an on-off device is arranged on the bypass pipeline; the bypass line is configured to divert a high temperature refrigerant discharged from the compressor to the refrigerant reservoir to prevent frosting of the outdoor heat exchanger.
9. The heat pump air conditioning system according to claim 8, wherein, The air conditioning system is provided with a fifth refrigerant adjusting mode, the air conditioning system can execute the fifth refrigerant adjusting mode when heating, the bypass pipeline is conducted, and high-temperature refrigerant discharged by the compressor flows to the refrigerant storage through the bypass pipeline and the second sub-branch pipeline so as to prevent frosting of the outdoor heat exchanger.
10. A heat pump air conditioning system comprising: A compressor; the four-way reversing valve is connected with the compressor and is configured to change the flow direction of the refrigerant; the indoor heat exchanger is connected with the four-way reversing valve; It is characterized in that the method also comprises the following steps: The outdoor heat exchanger comprises: the refrigerant heat exchange area is configured to exchange heat with the refrigerant flowing through, and is connected with the four-way reversing valve; A refrigerant storage area configured to store a flowing refrigerant; A first pipe configured to connect the refrigerant heat exchanger and the indoor heat exchanger; A branch pipe configured to connect the refrigerant storage area and the first pipe to form a refrigerant flow path; The adjustable on-off device is arranged on the first pipeline and is configured to adjust the flow rate of the refrigerant flowing into the refrigerant storage area so as to adjust the circulation amount of the refrigerant in the air conditioning system.

Description

Heat pump air conditioning system Technical Field The invention relates to the technical field of air conditioners, in particular to a heat pump air conditioning system. Background In the use process of the air conditioner product, the quantity of circulating refrigerants required by a unit is different when the air conditioner operates under different working conditions, and the quantity difference of cold and hot refrigerants is balanced when the air conditioner product is developed, a liquid storage device is usually arranged in the system and used for storing a part of refrigerants when the air conditioner product operates, but the air conditioner product can only meet the best balance effect under a specific working condition state, and the circulating quantity under different working condition states can not be dynamically regulated. The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention Aiming at the problems pointed out in the background art, the invention provides a heat pump air conditioning system which can realize dynamic adjustment of the circulation quantity of the refrigerant so as to meet the requirements of the air conditioning system on the quantity of the refrigerant under different working conditions. In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme: In some embodiments, a heat pump air conditioning system is provided, which comprises a compressor, a four-way reversing valve connected with the compressor and configured to change the flow direction of a refrigerant, an indoor heat exchanger connected with the four-way reversing valve, an outdoor heat exchanger connected with the four-way reversing valve, a refrigerant storage configured to store the refrigerant flowing through, a first pipeline configured to connect the outdoor heat exchanger with the indoor heat exchanger, a branch pipeline configured to connect the refrigerant storage with the first pipeline to form a refrigerant flow path, and an adjustable on-off device arranged on the first pipeline and configured to adjust the flow rate of the refrigerant flowing through the refrigerant storage so as to adjust the circulation amount of the refrigerant in the air conditioning system. The technical scheme has the following advantages or beneficial effects: When the refrigerant flows between the indoor heat exchanger and the outdoor heat exchanger, the refrigerant flows through the first pipeline, and according to the refrigerant quantity required by the air conditioning system, the opening degree of the adjustable on-off device is adjusted to change the refrigerant quantity flowing into the branch pipeline in the first pipeline, namely, the refrigerant quantity flowing through the refrigerant storage is adjusted, so that the refrigerant circulation quantity in the air conditioning system is adjusted. The opening degree of the adjustable on-off device can be adjusted, and the refrigerant circularly flows through the refrigerant storage, so that the dynamic adjustment of the circulation quantity of the refrigerant can be realized, and the requirement of the air conditioning system on the quantity of the refrigerant under different working conditions can be met. In some embodiments of the present application, the air conditioning system further includes a first throttling device, where the first throttling device is disposed on the first pipeline, and the first throttling device is disposed on a side close to the outdoor heat exchanger; The air conditioning system further comprises a second throttling device, the second throttling device is arranged on the first pipeline, and the second throttling device is arranged on one side close to the indoor heat exchanger; the adjustable on-off device is arranged between the first throttling device and the second throttling device; The branch pipeline comprises a first sub-branch pipeline, a first end of the first sub-branch pipeline is connected with a first end of the refrigerant storage, and a second end of the first sub-branch pipeline is connected with the first pipeline between the first throttling device and the adjustable on-off device; the branch pipeline comprises a second sub-branch pipeline, a first end of the second sub-branch pipeline is connected with a second end of the refrigerant storage, and a second end of the second sub-branch pipeline is connected with a first pipeline between the second throttling device and the adjustable on-off device. The other technical scheme has the following advantages or beneficial effects: The branch pipeline and the refrigerant storage are equivalent to a bypass branch connected to the first pipeline, and when the refrigerant circulation amount in the air conditioning