Heat pump system with electromagnetic-induction heating and control method therefor

Patent metadata

Field	Value
Publication number	US-11326812-B2
Application number	US-201916620133-A
Country	US
Kind code	B2
Filing date	Jun 3, 2019
Priority date	Jun 20, 2018
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A heat pump system and a control method therefor are provided. The heat pump system includes an outdoor heat exchanger and an electromagnetic heating assembly. The electromagnetic heating assembly includes an induction heating sheet, an insulation plate, and an electromagnetic induction wire coil. The induction heating sheet is in contact with the outdoor heat exchanger, the electromagnetic induction wire coil is attached to the insulation plate, the insulation plate is connected to the outdoor heat exchanger or the induction heating sheet, the induction heating sheet is coupled with the electromagnetic induction wire coil by communication.

First claim

What is claimed is:

1. A heat pump system, comprising:
an outdoor heat exchanger, wherein the outdoor heat exchanger is configured as a heat exchange tube, the induction heating sheet is located in the heat exchange tube, and the insulation plate is attached to an outer peripheral wall of the heat exchange tube; and
an electromagnetic heating assembly, comprising:
an induction heating sheet, an insulation plate, and an electromagnetic induction wire coil, the induction heating sheet being in contact with the outdoor heat exchanger, the electromagnetic induction wire coil being attached to the insulation plate, the insulation plate being connected to the outdoor heat exchanger or the induction heating sheet, and the induction heating sheet being coupled with the electromagnetic induction wire coil in a feedback manner to generate an alternating magnetic field.

2. The heat pump system according to claim 1 , wherein the heat exchange tube has two outer surfaces being a first surface as the upper side of the outer surface and a second surface as a lower side of the outer surface;
two insulation plates are provided, the two insulation plates being a first insulation plate and a second insulation plate, the first insulation plate is attached to the first surface, and the second insulation plate is attached to the second surface; and
two electromagnetic induction wire coils are provided, the two electromagnetic induction wire coils being a first electromagnetic induction wire coil and a second electromagnetic induction wire coil, the first electromagnetic induction wire coil is attached to the first insulation plate, and the second electromagnetic induction wire coil is attached to the second insulation plate.

3. The heat pump system according to claim 1 , wherein the outdoor heat exchanger is configured as a microchannel plate.

4. The heat pump system according to claim 3 , wherein the induction heating sheet is attached to an outer peripheral wall of the outdoor heat exchanger.

5. The heat pump system according to claim 3 , wherein the electromagnetic heating assembly comprises two induction heating sheets, the two induction heating sheets are located at opposite outer surfaces of the microchannel plate, and the insulation plate is attached to one of the induction heating sheets.

6. The heat pump system according to claim 3 , wherein two microchannel plates are provided, and the induction heating sheet is sandwiched between the two microchannel plates.

7. The heat pump system according to claim 1 , wherein two electromagnetic heating assembles are provided, the induction heating sheet, the insulation plate, and the electromagnetic induction wire coil of each of the electromagnetic heating assemblies are superposed in sequence, and the induction heating sheet is attached to an outer surface of the outdoor heat exchanger.

8. The heat pump system according to claim 7 , wherein the two electromagnetic heating assembles are arranged at surfaces of the outdoor heat exchanger respectively.

9. The heat pump system according to claim 1 , wherein the electromagnetic induction wire coil is circular, oval, or polygonal.

10. A control method for a heat pump system, wherein the heat pump system is the heat pump system according to claim 1 ,
the heat pump system comprises a temperature sensor configured to detect a discharge temperature of a compressor, the discharge temperature detected by the temperature sensor is represented by T, and a target discharge temperature of the heat pump system is represented by T 0 ,
the control method comprises: starting the electromagnetic heating assembly when the heat pump system is in a heating-start mode or a defrosting mode.

11. The control method according to claim 10 , wherein in a normal heating mode,
if T is less than T 0 , and the compressor reaches a maximum frequency, the electromagnetic heating assembly is started; and
if T is greater than or equal to T 0 , and the compressor does not reach the maximum frequency, the electromagnetic heating assembly stops heating.

12. The heat pump system according to claim 4 , wherein the electromagnetic heating assembly comprises two induction heating sheets, the two induction heating sheets are located at opposite outer surfaces of the microchannel plate, and the insulation plate is attached to one of the induction heating sheets.

13. The heat pump system according to claim 4 , wherein two microchannel plates are provided, and the induction heating sheet is sandwiched between the two microchannel plates.

14. The heat pump system according to claim 5 , wherein two microchannel plates are provided, and the induction heating sheet is sandwiched between the two microchannel plates.

15. The heat pump system according to claim 1 , wherein two electromagnetic heating assembles are provided, the induction heating sheet, the insulation plate, and the electromagnetic induction wire coil of each of the electromagnetic heating assemblies are superposed in sequence, and the induction heating sheet is attached to an outer surface of the outdoor heat exchanger.

16. The heat pump system according to claim 2 , wherein two electromagnetic heating assembles are provided, the induction heating sheet, the insulation plate, and the electromagnetic induction wire coil of each of the electromagnetic heating assemblies are superposed in sequence, and the induction heating sheet is attached to an outer surface of the outdoor heat exchanger.

17. The heat pump system according to claim 3 , wherein two electromagnetic heating assembles are provided, the induction heating sheet, the insulation plate, and the electromagnetic induction wire coil of each of the electromagnetic heating assemblies are superposed in sequence, and the induction heating sheet is attached to an outer surface of the outdoor heat exchanger.

18. The heat pump system according to claim 4 , wherein two electromagnetic heating assembles are provided, the induction heating sheet, the insulation plate, and the electromagnetic induction wire coil of each of the electromagnetic heating assemblies are superposed in sequence, and the induction heating sheet is attached to an outer surface of the outdoor heat exchanger.

19. The heat pump system according to claim 5 , wherein two electromagnetic heating assembles are provided, the induction heating sheet, the insulation plate, and the electromagnetic induction wire coil of each of the electromagnetic heating assemblies are superposed in sequence, and the induction heating sheet is attached to an outer surface of the outdoor heat exchanger.

Assignees

• Hefei Midea Heating & Ventilating Equipment Co Ltd
• Gd Midea Heating & Ventilating Equipment Co Ltd

Inventors

• Luo Bin
• Li Yuanyang
• Liu Shuqing
• Yang Kun
• Zhan Lei

Classifications

• F25B49/02

  for compression type machines, plants or systems · CPC title

• F25B2700/21152

  at the discharge side of the compressor · CPC title

• F24F11/42

  of outdoor units · CPC title

• H05B6/36

  Coil arrangements · CPC title

• H05B6/108

  for heating a fluid · CPC title