Mobile air conditioner

Patent metadata

Field	Value
Publication number	US-11774150-B2
Application number	US-202017112890-A
Country	US
Kind code	B2
Filing date	Dec 4, 2020
Priority date	Jun 12, 2018
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A mobile air conditioner, comprising: a first heat exchanger, having a first interface and a second interface for a refrigerant to enter and exit; a phase-change energy storage heat exchange device, including a second heat exchanger and a phase-change energy storage working medium, wherein the second heat exchanger and the phase-change energy storage working medium may exchange heat therebetween, and the second heat exchanger has a third interface and a fourth interface for the refrigerant to enter and exit; a first refrigerant pipeline, connected to the first interface and the third interface; and a second refrigerant pipeline, connected to the second interface and the fourth interface.

First claim

What is claimed is:

1. A mobile air conditioner, comprising:
a first heat exchanger, having a first interface and a second interface for a refrigerant to enter and exit;
a phase-change energy storage heat exchange device, including a second heat exchanger and a phase-change energy storage working medium, the second heat exchanger and the phase-change energy storage working medium configured to exchange heat therebetween, and the second heat exchanger has a third interface and a fourth interface for the refrigerant to enter and exit;
a first refrigerant pipeline, connected to the first interface and the third interface;
a second refrigerant pipeline, connected to the second interface and the fourth interface;
a temperature detection unit, configured to detect a temperature of the phase-change energy storage working medium, and send out a first signal when detecting that the temperature of the phase-change energy storage working medium rises to a first preset limit; and
a controller, electrically connected to the temperature detection unit being configured to send out a first instruction in response to the first signal, the first instruction being used for triggering the mobile air conditioner to stop operating in a refrigeration mode, or the controller being configured to send out a second instruction in response to the first signal, the second instruction being used for triggering a reminding device to execute a reminding function.

2. The mobile air conditioner according to claim 1 , wherein
the first refrigerant pipeline includes:
a first communication branch, communicated with the first interface and the third interface, the first interface being communicated with the third interface when the first communication branch is opened.

3. The mobile air conditioner according to claim 2 , wherein
the first communication branch is opened when a temperature of the refrigerant flowing out of the third interface is lower than a current room temperature and there is a temperature difference of at least 3° C. therebetween.

4. The mobile air conditioner according to claim 1 , wherein
the first refrigerant pipeline includes:
a first one-way throttle branch, communicated with the first interface and the third interface, and the first one-way throttle branch being configured to throttle the refrigerant from the second heat exchanger and then deliver the refrigerant to the first heat exchanger.

5. The mobile air conditioner according to claim 4 , wherein
the first refrigerant pipeline further includes:
a second one-way throttle branch, communicated with the first interface and the third interface, and the second one-way throttle branch being configured to throttle the refrigerant from the first heat exchanger and then deliver the refrigerant to the second heat exchanger.

6. The mobile air conditioner according to claim 5 , wherein
the first one-way throttle branch and the second one-way throttle branch are configured to satisfy that a pressure drop after the refrigerant is throttled by the first one-way throttle branch is smaller than a pressure drop after the refrigerant is throttled by the second one-way throttle branch.

7. The mobile air conditioner according to claim 1 , wherein
the first preset limit is from 8° C. to 20° C.

8. The mobile air conditioner according to claim 1 , wherein
the temperature detection unit is configured to send out a second signal when detecting that the temperature of the phase-change energy storage working medium decreases to a second preset limit, and the controller is configured to send out a third instruction in response to the second signal, the third instruction being used for triggering the mobile air conditioner to stop operating in an energy storage mode.

9. The mobile air conditioner according to claim 8 , wherein
the second preset limit is from −10° C. to −4° C.

10. The mobile air conditioner according to claim 2 , wherein
the second refrigerant pipeline includes:
a second communication branch, communicated with the second interface and the fourth interface, the second heat exchanger being located higher than the first heat exchanger, to enable the refrigerant in the second heat exchanger to be transported by gravity to the first heat exchanger along the first communication branch.

11. The mobile air conditioner according to claim 2 , wherein
the second refrigerant pipeline includes:
a second communication branch, communicated with the second interface and the fourth interface, at least one of the first communication branch and the second communication branch being connected with a driving member configured to drive the refrigerant to flow.

12. The mobile air conditioner according to claim 1 , wherein
the second refrigerant pipeline includes:
a compressor, having a gas discharge port and a gas return port; and
a four-way valve, communicated with the gas discharge port, the gas return port, the second interface and the fourth interface, the four-way valve being configured to control the gas discharge port and the fourth interface to be communicated therebetween and control the gas return port and the second interface to be communicated therebetween,
wherein the four-way valve is further configured to control the gas return port and the fourth interface to be communicated therebetween, and control the gas discharge port and the second interface to be communicated therebetween.

13. The mobile air conditioner according to claim 1 , wherein
the second refrigerant pipeline includes:
a compressor, having a gas return port and a gas discharge port;
a first gas return pipe, communicated with the gas return port and the fourth interface and being connected with a third valve, and the third valve being configured to open or close the first gas return pipe;
a second gas return pipe, communicated with the gas return port and the second interface and being connected with a fourth valve, and the fourth valve being configured to open or close the second gas return pipe;
a first gas discharge pipe, communicated with the gas discharge port and the fourth interface and being connected with a fifth valve, and the fifth valve being configured to open or close the first gas discharge pipe; and
a second gas discharge pipe, communicated with the gas discharge port and the second interface and being connected with a sixth valve, and the sixth valve being configured to open or close the second gas discharge pipe.

14. The mobile air conditioner according to claim 12 , wherein
the compressor is provided with an interface configured to electrically connect the compressor to an external power source.

15. The mobile air conditioner according to claim 12 , further comprising:
a battery, electrically connected to the compressor and supplying power to the compressor.

16. The mobile air conditioner according to claim 1 , wherein
the second heat exchanger includes at least one of a coil heat exchanger, a finned tube heat exchanger and a spiral fin heat exchanger.

17. The mobile air conditioner according to claim 4 , wherein
the first one-way throttle branch includes at least one of a capillary tube, an electronic expansion valve and a thermostatic expansion valve.

18. The mobile air conditioner according to claim 5 , wherein
the second one-way throttle branch includes at least one of a capillary tube, an electronic expansion valve and a thermostatic expansion valve.

Assignees

• Midea Group Co Ltd

Inventors

• Lin Chen
• Liu Hecheng
• Yue Bao

Classifications

• F25B49/02 Primary

  for compression type machines, plants or systems · CPC title

• F25B39/00

  Evaporators; Condensers · CPC title

• F25B41/31

  Expansion valves · CPC title

• F25B41/37

  Capillary tubes · CPC title

• F25B41/40

  Fluid line arrangements · CPC title