CN201293489Y - Water source multi-connection air conditioning system with bypass loop - Google Patents
Water source multi-connection air conditioning system with bypass loop Download PDFInfo
- Publication number
- CN201293489Y CN201293489Y CNU2008201750467U CN200820175046U CN201293489Y CN 201293489 Y CN201293489 Y CN 201293489Y CN U2008201750467 U CNU2008201750467 U CN U2008201750467U CN 200820175046 U CN200820175046 U CN 200820175046U CN 201293489 Y CN201293489 Y CN 201293489Y
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Abstract
The utility model discloses a water supply multi-couple unit air conditioner system with a refrigeration constant pressure by-pass loop, belonging to the air conditioning equipment field, comprising a compressor. The exhaustion side of the compressor is communicated with a four-way valve which is communicated with an outdoor heat exchanger. The outdoor heat exchanger is communicated with a main electronic expansion valve. The electronic expansion valve is communicated with a liquid container. The liquid container is communicated with the indoor heat exchanger. The indoor heat exchanger is communicated with the four-way valve. The four-way valve is communicated with the air-intake side. A by-pass pipe is connected behind the exhaustion side of the compressor and the main electronic expansion valve. A solenoid valve is arranged on the by-pass pipe. The utility model can ensure the safety of the operation oil return of the compressor.
Description
Technical field
The utility model relates to a kind of air-conditioning equipment, specifically a kind of water source multi-online air-conditioning system.
Background technology
The water source multi-online air-conditioning system of prior art, when the refrigeration inflow temperature was low, condensing pressure was also lower, causes compression ratio low easily, and is unfavorable to oil return control, influences the security of operation and the service life of compressor.
Summary of the invention
Task of the present utility model is to provide a kind of water source multi-online air-conditioning system with bypass circulation, and it can guarantee the security of compressor operating oil return.
Its technical solution is: the water source multi-online air-conditioning system of band bypass circulation, comprise compressor, compressor air-discharging side and cross valve link, cross valve and outdoor heat exchanger link, outdoor heat exchanger and main electric expansion valve link, electric expansion valve and reservoir link, reservoir and indoor heat exchanger link, indoor heat exchanger and cross valve link, cross valve is connected with the air inlet side of compressor, be connected with bypass pipe behind the exhaust side of described compressor and the main electric expansion valve, bypass pipe is provided with magnetic valve.
Above-mentioned magnetic valve adopts the level pressure magnetic valve.
Be provided with division board in the above-mentioned reservoir, division board is arranged between the interior two liquid pipes of reservoir.
The beneficial effects of the utility model are: owing to increased bypass circulation in air-conditioning system, at little load, under the situation of low inflow temperature, switching by control level pressure magnetic valve, the guiding warm refrigerant enters reservoir, raise condensation side pressure, thereby can ensure compression ratio ε＞more than 1.8, guarantee the security of compressor operating oil return.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Describe below in conjunction with 1 pair of the utility model of accompanying drawing:
The specific embodiment
A kind of water source multi-online air-conditioning system described in the utility model with bypass circulation, comprise frequency-changeable compressor 1, frequency-changeable compressor 1 exhaust side and cross valve 2 link, cross valve 2 links with outdoor heat exchanger 3, outdoor heat exchanger 3 links with main electric expansion valve 4, main electric expansion valve 4 links with reservoir 5, reservoir 5 links with indoor heat exchanger 8 by indoor electric expansion valve 7, indoor heat exchanger 8 links with cross valve 2, cross valve 2 is connected with the air inlet side of frequency-changeable compressor 1, be connected with bypass pipe 9 behind the exhaust side of described frequency-changeable compressor 1 and the main electric expansion valve 4, bypass pipe 9 is provided with level pressure magnetic valve 6.In order to play the purpose of isolating the cold-producing medium bubble, be provided with division board in the reservoir, division board is arranged between the interior two liquid pipes of reservoir.
In the refrigeration underrun, under the situation of low inflow temperature, the refrigeration condensing pressure can significantly reduce.If condensing pressure is low excessively, cause compression ratio ε＜1.8 o'clock, compressor oil return meeting takes place not smooth.Therefore when compression ratio ε＜2.2, open the level pressure magnetic valve this moment, and the high-temperature gas cold-producing medium is directly walked around outdoor heat exchanger, enters reservoir and mix, and raises the pressure of condensation side, thereby ensure that control compression ratio ε is not less than 1.8.When compression ratio ε＞2.4, close the level pressure magnetic valve, block bypass circulation, guaranteed the security of compressor oil return.
Certainly, protection domain of the present utility model is not limited to the foregoing description, so long as those of ordinary skill in the art is through creatively improving, and just should be within protection domain of the present utility model.
Claims (3)
1, the water source multi-online air-conditioning system of band bypass circulation, comprise compressor, cross valve, outdoor heat exchanger, main electric expansion valve, reservoir and indoor heat exchanger, it is characterized in that: be connected with bypass pipe behind the exhaust side of described compressor and the main electric expansion valve, bypass pipe is provided with magnetic valve.
2, the water source multi-online air-conditioning system of band bypass circulation according to claim 1 is characterized in that: described magnetic valve adopts the level pressure magnetic valve.
3, the water source multi-online air-conditioning system of band bypass circulation according to claim 1 and 2 is characterized in that: be provided with division board in the described reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201750467U CN201293489Y (en) | 2008-11-12 | 2008-11-12 | Water source multi-connection air conditioning system with bypass loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201750467U CN201293489Y (en) | 2008-11-12 | 2008-11-12 | Water source multi-connection air conditioning system with bypass loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201293489Y true CN201293489Y (en) | 2009-08-19 |
Family
ID=41006969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201750467U Expired - Lifetime CN201293489Y (en) | 2008-11-12 | 2008-11-12 | Water source multi-connection air conditioning system with bypass loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201293489Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506480A (en) * | 2011-11-11 | 2012-06-20 | 广东美的电器股份有限公司 | Air-conditioning heat pump system of multi-split air conditioner |
| CN103307816A (en) * | 2013-05-31 | 2013-09-18 | 深圳麦克维尔空调有限公司 | Water source multi-connected air-conditioning system |
| CN103983038A (en) * | 2014-05-06 | 2014-08-13 | 广东美的暖通设备有限公司 | Air conditioning system and control method thereof |
| CN107588573A (en) * | 2017-09-04 | 2018-01-16 | 广东美的暖通设备有限公司 | Air-conditioning, compressor protection method, computer equipment and readable storage medium storing program for executing |
| CN109489295A (en) * | 2018-11-21 | 2019-03-19 | 青岛海信日立空调系统有限公司 | Multi-connected air conditioning system and its control method |
| CN111397239A (en) * | 2020-03-13 | 2020-07-10 | 海信（山东）空调有限公司 | Multi-split air conditioning system and method for reducing noise of multi-split air conditioning system |
| CN113483449A (en) * | 2021-07-09 | 2021-10-08 | 青岛海尔空调器有限总公司 | Oil return control method for indoor unit |
-
2008
- 2008-11-12 CN CNU2008201750467U patent/CN201293489Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506480A (en) * | 2011-11-11 | 2012-06-20 | 广东美的电器股份有限公司 | Air-conditioning heat pump system of multi-split air conditioner |
| CN103307816A (en) * | 2013-05-31 | 2013-09-18 | 深圳麦克维尔空调有限公司 | Water source multi-connected air-conditioning system |
| CN103307816B (en) * | 2013-05-31 | 2016-02-03 | 深圳麦克维尔空调有限公司 | A kind of water source multi-connected air conditioning system |
| CN103983038A (en) * | 2014-05-06 | 2014-08-13 | 广东美的暖通设备有限公司 | Air conditioning system and control method thereof |
| CN107588573A (en) * | 2017-09-04 | 2018-01-16 | 广东美的暖通设备有限公司 | Air-conditioning, compressor protection method, computer equipment and readable storage medium storing program for executing |
| CN107588573B (en) * | 2017-09-04 | 2019-12-27 | 广东美的暖通设备有限公司 | Air conditioner, compressor protection method, computer device, and readable storage medium |
| CN109489295A (en) * | 2018-11-21 | 2019-03-19 | 青岛海信日立空调系统有限公司 | Multi-connected air conditioning system and its control method |
| CN109489295B (en) * | 2018-11-21 | 2021-03-30 | 青岛海信日立空调系统有限公司 | Multi-connected air conditioning system and control method thereof |
| CN111397239A (en) * | 2020-03-13 | 2020-07-10 | 海信（山东）空调有限公司 | Multi-split air conditioning system and method for reducing noise of multi-split air conditioning system |
| CN113483449A (en) * | 2021-07-09 | 2021-10-08 | 青岛海尔空调器有限总公司 | Oil return control method for indoor unit |
| CN113483449B (en) * | 2021-07-09 | 2022-09-06 | 青岛海尔空调器有限总公司 | Oil return control method for indoor unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |