CN101769657A - Air conditioner capable of improving low-temperature heating capacity and control method thereof - Google Patents
Air conditioner capable of improving low-temperature heating capacity and control method thereof Download PDFInfo
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- CN101769657A CN101769657A CN200910263756A CN200910263756A CN101769657A CN 101769657 A CN101769657 A CN 101769657A CN 200910263756 A CN200910263756 A CN 200910263756A CN 200910263756 A CN200910263756 A CN 200910263756A CN 101769657 A CN101769657 A CN 101769657A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air conditioner capable of improving low-temperature heating capacity, comprising a compressor and an air-supplying enthalpy-increasing device connected between an exhaust pipe and a return pipe of the compressor. The exhaust pressure is improved through an air-supplying enthalpy-increasing circuit under low outdoor ambient temperature so as to improve low-temperature heating capacity and obtain better low-temperature heating effect. The invention also discloses a control method of the air conditioner capable of improving the low-temperature heating capacity. When the outdoor ambient temperature is lower than a certain temperature t1, the air-supplying enthalpy-increasing device is turned on, the high-pressure high-temperature gas in the exhaust pipe of the compressor is changed into the low-pressure high-temperature gas after pressure reduction through the air-supplying enthalpy-increasing circuit; the low-pressure high-temperature gas returns to a return air inlet of the compressor through the air-supplying enthalpy-increasing circuit; because relative high-temperature gaseous refrigerant at the return air inlet of the compressor is increased, the return pressure of the compressor rises, and the exhaust pressure further rises. In the invention, the exhaust pressure rises, the condensing pressure is improved, the condensing temperature is improved, and the heating capacity is increased.
Description
Technical field
The present invention relates to the technical field of air-conditioner in the electric equipment, more particularly, relate to a kind of air-conditioner and control method thereof that can improve low-temperature heating capacity.
Background technology
During heating operation, the difference of evaporating temperature and outdoor temperature is less, evaporimeter heat exchange property variation under the lower situation of outdoor temperature for air conditioner, though at this moment the multiplication of voltage of condensing pressure and evaporating pressure is very big, but,, also relatively low through condensing pressure after the compressor compresses because evaporating pressure is lower, condensation temperature is lower, less with the indoor temperature difference, the condenser heat exchange property is also poor, and heating capacity is little, leaving air temp is also lower, and comfortableness is very poor.Therefore, in order to improve the low-temperature heating performance, the condensing pressure in the time of should improving low-temperature heating as far as possible will improve condensing pressure and just must improve pressure at expulsion, and the raising of pressure at expulsion depends on the raising of pressure of inspiration(Pi).Because outdoor temperature is low, evaporating pressure is low, causes pressure of inspiration(Pi) to be difficult to improve.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of raising pressure at expulsion, and then reaches the air-conditioner that improves low-temperature heating capacity; The present invention also provides a kind of control method that can improve the air-conditioner of low-temperature heating capacity.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of air-conditioner that can improve low-temperature heating capacity, comprise compressor, and also be included in the tonifying Qi enthalpy-increasing device that is connected between compressor exhaust pipe and the muffler.
Described tonifying Qi enthalpy-increasing device comprises capillary and the magnetic valve that is connected in series.
Described tonifying Qi enthalpy-increasing device is an electric expansion valve.
Described capillary is a restriction sleeve.
Described capillary is a restricting orifice.
A kind of control method that can improve the air-conditioner of low-temperature heating capacity when outdoor environment temperature is lower than a certain temperature t 1, is opened the tonifying Qi enthalpy-increasing device.
When outdoor environment temperature is lower than a certain temperature t 1, open the magnetic valve of tonifying Qi enthalpy-increasing device.
When outdoor environment temperature is lower than a certain temperature t 1, open the electric expansion valve of tonifying Qi enthalpy-increasing device.
The scope of described temperature t 1 is at-5 ℃～+ 5 ℃.
The present invention with respect to the beneficial effect of prior art is:
The present invention increases the enthalpy loop by a tonifying Qi, when outdoor environment temperature is low, improves pressure at expulsion, and then reaches the purpose that improves low-temperature heating capacity, obtains the good low-temperature heating effect.
Control method of the present invention is when outdoor environment temperature is lower than a certain temperature t 1, open the tonifying Qi enthalpy-increasing device, high pressure-temperature gas in the compressor exhaust pipe, after the process tonifying Qi increases the step-down of enthalpy loop, become the gas of low-voltage high-temperature, low-voltage high-temperature gas increases the return-air mouth that the enthalpy loop turns back to compressor through tonifying Qi.Because compressor return air mouth relatively-high temperature gaseous refrigerant increases, make the rising of compressor return air pressure, and then cause pressure at expulsion to raise.Pressure at expulsion raises, and condensing pressure improves, condensation temperature improves, and heating capacity increases, and adopts this method can make low-temperature heating capacity increase about 30%.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the connection layout of air-conditioner critical piece of the present invention.
The specific embodiment
Referring to accompanying drawing 1,1 is air conditioning chamber's inner condenser, and 2 are the throttling dropping equipment, and 3 is evaporimeter outside the air conditioning chamber, and 4 is cross valve, and 5 is magnetic valve, and 6 is compressor liquid storage can, and 7 is compressor, and 8 is capillary, and 9 is check valve.
Be connected a tonifying Qi enthalpy-increasing device between outdoor compressor exhaust pipe and muffler, this device comprises capillary 8 and the magnetic valve 5 that is connected in series.It is the capillary of φ 1.4 or φ 1.7 that capillary 8 adopts internal diameter, length 300mm～1500mm.
When if outdoor environment temperature is higher, magnetic valve 5 is in closed condition, the refrigeration of air-conditioner, heat fully the same with the common air-conditioning device.
When outdoor environment temperature was low, the gaseous refrigerant of getting back to compressor liquid storage can 6 through off-premises station evaporimeter 3, cross valve 4, check valve 9 was few, and temperature is low, pressure is low.After the cold-producing medium of low back pressure compressed through compressor 7, pressure at expulsion was relative also lower, the cold-producing medium process cross valve 4 that pressure is not high, and the condensing pressure that arrives indoor condenser 1 is also lower, makes condensation temperature not high, and heating capacity is little.
Therefore, when outdoor environment temperature is lower than a certain temperature t 1, open magnetic valve 5, high pressure-temperature gas in the compressor exhaust pipe after capillary 8 step-downs, becomes the gas of low-voltage high-temperature, low-voltage high-temperature gas turns back to fluid reservoir 6 through magnetic valve 5, arrives the return-air mouth of compressor 7 again.Because compressor return air mouth relatively-high temperature gaseous refrigerant increases, make the rising of compressor return air pressure, and then cause pressure at expulsion to raise.Pressure at expulsion raises, and condensing pressure improves, condensation temperature improves, and heating capacity increases.The scope of t1 is at-5 ℃～+ 5 ℃.
In the air conditioner heat-production process, if, controlling magnetic valve 5 less than+5 ℃, opens outdoor environment temperature, will flow into the compressor air suction loop after the refrigerant step-down of part.Magnetic valve 5 cuts out during heating operation under other environment temperatures, and refrigerant can not flow through magnetic valve 5 and capillary 8, the normal heating operation of air-conditioner.
The present invention can also select electric expansion valve, replaces capillary 8 and magnetic valve 5.If outdoor environment temperature is more than or equal to+5 ℃, the control electric expansion valve is closed.If outdoor environment temperature less than+5 ℃, under different outdoor temperatures, is controlled the different opening of electric expansion valve.
The present invention also can select restriction sleeve, restricting orifice to substitute capillary 8 and realize above-mentioned purpose.
Claims (9)
1. the air-conditioner that can improve low-temperature heating capacity comprises compressor, it is characterized in that: also be included in the tonifying Qi enthalpy-increasing device that is connected between compressor exhaust pipe and the muffler.
2. the air-conditioner that can improve low-temperature heating capacity according to claim 1 is characterized in that: described tonifying Qi enthalpy-increasing device comprises capillary (8) and the magnetic valve (5) that is connected in series.
3. the air-conditioner that can improve low-temperature heating capacity according to claim 1 is characterized in that: described tonifying Qi enthalpy-increasing device is an electric expansion valve.
4. the air-conditioner that can improve low-temperature heating capacity according to claim 2 is characterized in that: described capillary (8) is a restriction sleeve.
5. the air-conditioner that can improve low-temperature heating capacity according to claim 2 is characterized in that: described capillary (8) is a restricting orifice.
6. described control method that can improve the air-conditioner of low-temperature heating capacity of claim 1 is characterized in that: when outdoor environment temperature is lower than a certain temperature t 1, open the tonifying Qi enthalpy-increasing device.
7. the control method that can improve the air-conditioner of low-temperature heating capacity according to claim 6 is characterized in that: when outdoor environment temperature is lower than a certain temperature t 1, open the magnetic valve (5) of tonifying Qi enthalpy-increasing device.
8. the control method that can improve the air-conditioner of low-temperature heating capacity according to claim 6 is characterized in that: when outdoor environment temperature is lower than a certain temperature t 1, open the electric expansion valve of tonifying Qi enthalpy-increasing device.
9. according to each described control method that can improve the air-conditioner of low-temperature heating capacity of claim 6 to 8, it is characterized in that: the scope of described temperature t 1 is at-5 ℃～+ 5 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910263756A CN101769657A (en) | 2009-12-31 | 2009-12-31 | Air conditioner capable of improving low-temperature heating capacity and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910263756A CN101769657A (en) | 2009-12-31 | 2009-12-31 | Air conditioner capable of improving low-temperature heating capacity and control method thereof |
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| CN101769657A true CN101769657A (en) | 2010-07-07 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032726A (en) * | 2010-11-25 | 2011-04-27 | 广东美的电器股份有限公司 | Air conditioner capable of improving low-temperature heating capacity |
| WO2013120375A1 (en) * | 2012-02-14 | 2013-08-22 | 国家节能环保制冷设备工程技术研究中心 | Method of controlling a heat pump system with two-stage enthalpy increase |
| CN106482303A (en) * | 2016-11-25 | 2017-03-08 | 广州华凌制冷设备有限公司 | A kind of air-conditioner and its refrigeration control method |
| CN106595004A (en) * | 2017-02-04 | 2017-04-26 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner, and air conditioner |
| CN106642526A (en) * | 2016-10-13 | 2017-05-10 | 四川长虹电器股份有限公司 | Method of promoting heating performance of air conditioner system under low-temperature environment |
| CN106679119A (en) * | 2017-02-04 | 2017-05-17 | 青岛海尔空调器有限总公司 | Air conditioner control method and device and air conditioner |
| CN106801921A (en) * | 2017-02-21 | 2017-06-06 | 广东美的暖通设备有限公司 | Air injection enthalpy-increasing air-conditioning system and its control method |
| CN106839310A (en) * | 2017-02-04 | 2017-06-13 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioning, device and air-conditioning |
| CN107166664A (en) * | 2017-06-09 | 2017-09-15 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| WO2019200951A1 (en) * | 2018-04-20 | 2019-10-24 | 珠海格力电器股份有限公司 | Air conditioning heat pump system and control method |
| CN113669857A (en) * | 2020-05-13 | 2021-11-19 | 广东美的制冷设备有限公司 | Air conditioner sterilization method, air conditioner and storage medium |
-
2009
- 2009-12-31 CN CN200910263756A patent/CN101769657A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032726A (en) * | 2010-11-25 | 2011-04-27 | 广东美的电器股份有限公司 | Air conditioner capable of improving low-temperature heating capacity |
| WO2013120375A1 (en) * | 2012-02-14 | 2013-08-22 | 国家节能环保制冷设备工程技术研究中心 | Method of controlling a heat pump system with two-stage enthalpy increase |
| CN106642526B (en) * | 2016-10-13 | 2019-05-10 | 四川长虹电器股份有限公司 | The method of low temperature environment promotion air-conditioning system heating performance |
| CN106642526A (en) * | 2016-10-13 | 2017-05-10 | 四川长虹电器股份有限公司 | Method of promoting heating performance of air conditioner system under low-temperature environment |
| CN106482303A (en) * | 2016-11-25 | 2017-03-08 | 广州华凌制冷设备有限公司 | A kind of air-conditioner and its refrigeration control method |
| CN106839310B (en) * | 2017-02-04 | 2019-11-05 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioning, device and air-conditioning |
| CN106839310A (en) * | 2017-02-04 | 2017-06-13 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioning, device and air-conditioning |
| CN106679119A (en) * | 2017-02-04 | 2017-05-17 | 青岛海尔空调器有限总公司 | Air conditioner control method and device and air conditioner |
| CN106679119B (en) * | 2017-02-04 | 2019-11-05 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioning, device and air-conditioning |
| CN106595004A (en) * | 2017-02-04 | 2017-04-26 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner, and air conditioner |
| CN106595004B (en) * | 2017-02-04 | 2019-12-06 | 青岛海尔空调器有限总公司 | air conditioner control method and device and air conditioner |
| CN106801921A (en) * | 2017-02-21 | 2017-06-06 | 广东美的暖通设备有限公司 | Air injection enthalpy-increasing air-conditioning system and its control method |
| CN107166664A (en) * | 2017-06-09 | 2017-09-15 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| WO2019200951A1 (en) * | 2018-04-20 | 2019-10-24 | 珠海格力电器股份有限公司 | Air conditioning heat pump system and control method |
| CN113669857A (en) * | 2020-05-13 | 2021-11-19 | 广东美的制冷设备有限公司 | Air conditioner sterilization method, air conditioner and storage medium |
| CN113669857B (en) * | 2020-05-13 | 2022-11-11 | 广东美的制冷设备有限公司 | Air conditioner sterilization method, air conditioner and storage medium |
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Open date: 20100707 |