Multi-type air conditioner system

Patent metadata

Field	Value
Publication number	US-10429083-B2
Application number	US-201414531044-A
Country	US
Kind code	B2
Filing date	Nov 3, 2014
Priority date	Aug 30, 2013
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

The disclosure discloses a multi-type air conditioner system including: an outdoor machine, a refrigerant pipe connected with an output end of the outdoor machine, a manifold connected with an input end of the refrigerant pipe, an indoor machine connected with an output end of the refrigerant pipe, and a controller connected respectively with the outdoor machine and the indoor machine through a shielded signal line, wherein the multi-type air conditioner system may further include: a pipe set including a composite pipe, a third cutoff valve, a third filter, a third electronic expanding valve, a fourth cutoff valve and a pipe control board. With the disclosure, heating can be provided by precisely controlling indoor temperature and effectively lower power consumption.

First claim

The invention claimed is:

1. A multi-type air conditioner system, comprising: an outdoor machine, an indoor machine connected with the outdoor machine through a first refrigerant pipe, and a controller connected respectively with the outdoor machine and the indoor machine through a shielded signal line, the multi-type air conditioner system further comprising:
a set of underfloor-heating pipes connected with the outdoor machine through a second refrigerant pipe; and
wherein the controller is configured to transmit a refrigeration operation signal to the outdoor machine through the shielded signal line when the multi-type air conditioner system is operated in cooling mode so that refrigerant flows into the indoor machine, and the controller is configured to transmit a heating operation signal to the outdoor machine through the shielded signal line when the multi-type air conditioner system is operated in heating mode so that refrigerant at high temperature and high pressure gas state flows into at least the set of underfloor-heating pipes;
wherein the outdoor machine comprises an outdoor machine control board unit, a refrigerant flow direction control unit, a refrigerant control unit, a valve controller, an over-pressure protection unit and a filter protection unit, wherein:
the outdoor machine control board unit is configured to transmit a refrigerant flow direction control signal to the refrigerant flow direction control unit upon reception of the heating operation signal or the refrigeration operation signal transmitted by the controller and to transmit a refrigerant control signal to the refrigerant control unit according to received indoor temperature and user-preset temperature transmitted by the controller;
the refrigerant flow direction control unit is configured to open the second refrigerant pipe connected with the set of underfloor-heating pipes so that the refrigerant flows into the set of underfloor-heating pipes or to open the first refrigerant pipe connected with the indoor machine so that the refrigerant flows into the indoor machine, upon reception of the refrigerant flow direction control signal transmitted by the outdoor machine control board unit;
the refrigerant control unit is configured to control modality of the refrigerant and to control the flow of the refrigerant upon reception of the refrigerant control signal transmitted by the outdoor machine control board;
the valve controller is configured to control valves in the outdoor machine through an outdoor machine control board;
the over-pressure protection unit is configured to detect the pressure of the refrigerant in refrigerant pipes and to stop a compressor from operating when the pressure exceeds a threshold; and
the filter protection unit is configured to filter out impurities in the refrigerant and to return lubricating oil separated from the refrigerant to the compressor.

2. The multi-type air conditioner system according to claim 1 , wherein the refrigerant flow direction control unit comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve, wherein:
the first electromagnetic valve is arranged on the second refrigerant pipe connected with a refrigerant inflow end of the set of underfloor-heating pipes to control the second refrigerant pipe connected with the refrigerant inflow end of the set of underfloor-heating pipes to be opened or closed;
the second electromagnetic valve is arranged on the first refrigerant pipe connected with a refrigerant outflow end of the indoor machine to control the first refrigerant pipe connected with the refrigerant outflow end of the indoor machine to be opened or closed;
the third electromagnetic valve is arranged on the second refrigerant pipe connected with a refrigerant outflow end of the set of underfloor-heating pipes to control the second refrigerant pipe connected with the refrigerant outflow end of the set of underfloor-heating pipes to be opened or closed; and
the fourth electromagnetic valve is arranged on the first refrigerant pipe connected with a refrigerant inflow end of the indoor machine to control the first refrigerant pipe connected with the refrigerant inflow end of the indoor machine to be opened or closed.

3. The multi-type air conditioner system according to claim 2 , wherein:
when the multi-type air conditioner system operates in the cooling mode, the controller transmits the refrigeration operation signal to the outdoor machine control board unit through the shielded signal line, so that the outdoor machine control board unit controls the second electromagnetic valve and the fourth electromagnetic valve in the refrigerant flow direction control unit to be opened and the first electromagnetic valve and the third electromagnetic valve to be closed.

4. The multi-type air conditioner system according to claim 2 , wherein:
when the multi-type air conditioner system operates in the heating mode, the controller transmits the heating operation signal to the outdoor machine control board unit through the shielded signal line, so that the outdoor machine control board unit controls the second electromagnetic valve and the fourth electromagnetic valve in the refrigerant flow direction control unit to be closed and the first electromagnetic valve and the third electromagnetic valve to be opened.

5. The multi-type air conditioner system according to claim 1 , wherein the refrigerant control unit comprises the compressor, a first heat exchanger, a first cold medium distributor, a first refreezer and an outdoor fan motor, wherein:
an input end of the compressor is connected with the filter protection unit, and an output end thereof is connected with the over-pressure protection unit;
an input end of the first heat exchanger is connected with the valve control unit, and an output end thereof is connected with the first cold medium distributor;
an output end of the first refreezer is connected with the valve control unit; and
the outdoor fan motor is arranged proximate to the first heat exchanger.

6. The multi-type air conditioner system according to claim 5 , wherein the refrigerant control unit further comprises a first electronic expanding valve; and
an input end of the first electronic expanding valve is connected with an output end of the first cold medium distributor, and an output end thereof is connected with an input end of the first refreezer, and the first electronic expanding valve is electrically connected with the outdoor machine control board.

7. A multi-type air conditioned system, comprising: an outdoor machine, an indoor machine connected with the outdoor machine through a first refrigerant pipe, and a controller connected respectively with the outdoor machine and the indoor machine through a shielded signal line, the multi-type air conditioner system further comprising:
a set of underfloor-heating pipes connected with the outdoor machine through a second refrigerant pipe; and
wherein the controller is configured to transmit a refrigeration operation signal to the outdoor machine through the shielded signal line when the multi-type air conditioner system is operated in cooling mode so that refrigerant flows into the indoor machine, and the controller is configured to transmit a heating operation signal to the outdoor machine through the shielded signal line when the multi-type air conditioner system is operated in heating mode so that refrigerant at high temperature and high pressure gas state flows into at least the set of underfloor-heating pipes;
wherein the indoor machine comprises a second heat exchanger, a second filter, a second cold medium distributor, a second electronic expanding valve, an indoor fan motor, a first cutoff valve, a sec

Assignees

• Qingdao Hisense Hitachi Air Conditioning Sys Co Ltd
• Hisense Usa Corp
• Hisense Int Co Ltd

Inventors

• Chi Wugong

Classifications

• F24D3/12

  Tube and panel arrangements for ceiling, wall, or underfloor heating (electric underfloor heating F24D13/02) · CPC title

• F25B13/00

  Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title

• Y02B30/12

  Hot water central heating systems using heat pumps · CPC title

• F25B2313/005

  Outdoor unit expansion valves · CPC title

• F25B2313/0233

  in parallel arrangements · CPC title