US 2021/0260955 A1Published application

Heat pump system

AssigneeHangzhou Sanhua Research Institute Co., Ltd.

InventorsJUNQI DONG, QIAOFENG LIU, SHIWEI JIA

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Abstract

A heat pump system includes a compressor, a fluid switching device, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a flow regulating device and a throttle element. The second heat exchanger includes a first heat exchange portion and a second heat exchange portion. An outlet of the first heat exchange portion communicates with the throttle element. An inlet of the first heat exchange portion communicates with at least one of a second port of the third heat exchanger and an outlet of the fourth heat exchanger. An inlet of the second heat exchange portion communicates with the outlet of the first heat exchanger. An outlet of the second heat exchange portion communicates with an inlet of the compressor. In a heating mode, the function of the second heat exchanger is reduced, thereby the heating capacity of the heat pump system is improved.

Claims20

Dependent claims

A heat pump system, comprising:

a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a flow regulating device and a throttle element;
the second heat exchanger comprising a first heat exchange portion and a second heat exchange portion which are capable of exchanging heat with each other, the throttle element being connected between an outlet of the first heat exchange portion and an inlet of the first heat exchanger, an inlet of the first heat exchange portion being capable of communicating with at least one of a second port of the third heat exchanger and an outlet of the fourth heat exchanger, and the flow regulating device being connected between the second port of the third heat exchanger and the inlet of the first heat exchange portion;
a first port of the third heat exchanger being capable of communicating with an inlet of the compressor, and the outlet of the fourth heat exchanger being capable of communicating with the second port of the third heat exchanger through the flow regulating device;
or, the first port of the third heat exchanger communicating with the outlet of the fourth heat exchanger, and the fourth heat exchanger being capable of communicating with the flow regulating device through the third heat exchanger;
an inlet of the second heat exchange portion communicating with an outlet of the first heat exchanger, and an outlet of the second heat exchange portion being capable of communicating with the inlet of the compressor;
the heat pump system comprising a heating mode in which the first port of the third heat exchanger is in communication with the inlet of the compressor, an outlet of the compressor is in communication with an inlet of the fourth heat exchanger, the outlet of the fourth heat exchanger is in communication with the second port of the third heat exchanger through the flow regulating device, the throttle element is closed, and the flow regulating device throttles and depressurizes a refrigerant.

3 more elements

A heat pump system, characterized in that, comprising:

a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a flow regulating device and a throttle element;
the first heat exchanger being located in an air-conditioning box;
the third heat exchanger having a first port and a second port;
the second heat exchanger comprising a first heat exchange portion and a second heat exchange portion which are capable of exchanging heat with each other, the throttle element being connected between an outlet of the first heat exchange portion and an inlet of the first heat exchanger, an inlet of the first heat exchange portion being capable of communicating with the second port of the third heat exchanger, the flow regulating device being connected between the second port of the third heat exchanger and the inlet of the first heat exchange portion;
an inlet of the second heat exchange portion communicating with an outlet of the first heat exchanger, and an outlet of the second heat exchange portion communicating with an inlet of the compressor;
wherein the heat pump system comprises a cooling mode in which an outlet of the compressor is in communication with the first port of the third heat exchanger, the second port of the third heat exchanger is in communication with the throttle element through the flow regulating device and the first heat exchange portion, the throttle element is in communication with the inlet of the first heat exchanger, the outlet of the first heat exchanger is in communication with the inlet of the compressor through the second heat exchange portion, the throttle element throttles and depressurizes a refrigerant, and the flow regulating device is opened.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/253,037Filed 15 Oct 2019
Priority: CN 201811618080.128 Dec 2018
Published: 26 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification22 codes

B60H 1/00921
Controlling the flow of liquid in a heat pump system: where the flow direction of the refrigerant does not change and there is an extra…
B60H 1/00392
For vehicles having an electrical drive, e.g. hybrid or fuel cell: for electric vehicles having only electric drive means
B60H 1/22
Heating, cooling or ventilating devices: the heat source being other than the propulsion plant
B60H 1/3213
Control means therefor: for increasing the efficiency in a vehicle heat pump