CN208075218U - Air conditioner heat pump system - Google Patents
Air conditioner heat pump system Download PDFInfo
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- CN208075218U CN208075218U CN201820576117.8U CN201820576117U CN208075218U CN 208075218 U CN208075218 U CN 208075218U CN 201820576117 U CN201820576117 U CN 201820576117U CN 208075218 U CN208075218 U CN 208075218U
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Abstract
The utility model provides a kind of air conditioner heat pump system, including heat exchange cycle pipeline, increasing enthalpy pipeline, tonifying Qi pipeline and hydrojet pipeline, the heat exchange cycle pipeline includes compressor, four-way valve, indoor heat exchanger, throttling set and outdoor heat exchanger, and increasing enthalpy pipeline one end is connected to the gas supplementing opening of the compressor.Air conditioner heat pump system provided by the utility model, by the way that increasing enthalpy pipeline is arranged, it can ensure to work normally when air conditioner heat pump system is in compared with low ambient temperature, improve the refrigerant quality internal circulating load of compressor under same rotating speed, compressor electric motor is set preferably to be cooled down, reduce delivery temperature, by the way that tonifying Qi pipeline and hydrojet pipeline is arranged, the pressure at the end of the compression of compressor can be increased, and then realize system pressure than raising, some refrigerant liquid enters compressor by liquid injection valve simultaneously, improve circulating mass of refrigerant, reduce the compressor air suction degree of superheat, to reduce discharge superheat.
Description
Technical field
The utility model is related to airhandling equipment technical field, especially a kind of air conditioner heat pump system.
Background technology
For air-conditioning heat pump product due to the feature of its high energy efficiency and environmental protection, the application as heating heating is more and more extensive,
The warm a wide range of popularization and application in area, it is still, also seldom in the application of cold district.In cold district heating operation, room
External environment temperature is extremely low, causes system evaporating pressure low, and the compression ratio of conventional single stage steam compressed refrigerating circulating system limits
The raising of condensing pressure has been made, and then has caused the problem of heating effect difference.In addition, lower evaporating pressure, causes compressor to be inhaled
The refrigerant specific volume of gas side is larger, and the refrigerant mass fluxes of compressor cycle are less, and refrigerant circulation cannot effectively take away pressure
The heat that the electromechanical machine of contracting distributes, causes the motor of compressor to be unable to get good cooling, can not run reliably and with long-term.
Utility model content
In order to solve the above-mentioned technical problem, a kind of air conditioner heat that can be realized and be run reliably and with long-term in cold district is provided
Pumping system.
A kind of air conditioner heat pump system, including heat exchange cycle pipeline, tonifying Qi pipeline and hydrojet pipeline, the heat exchange cycle pipeline
Including compressor, indoor heat exchanger, throttling set and outdoor heat exchanger, the tonifying Qi of increasing enthalpy pipeline one end and the compressor
Mouth connection, the connecting pipeline between the other end and the indoor heat exchanger and the throttling set are connected to, the tonifying Qi pipeline one
End is connected to the gas supplementing opening of the compressor, and the other end is connected to the exhaust outlet of the compressor, one end of the hydrojet pipeline
Connecting pipeline between the indoor heat exchanger and the throttling set is connected to, and the air entry of the other end and the compressor connects
It is logical.
The air conditioner heat pump system further includes increasing enthalpy pipeline, and increasing enthalpy pipeline one end and the gas supplementing opening of the compressor connect
Logical, the connecting pipeline between the other end and the indoor heat exchanger and the throttling set is connected to.
The increasing enthalpy pipeline includes increasing enthalpy valve, economizer and increasing enthalpy throttle valve, and the economizer includes the first heat exchanging pipe
It is connected to the gas supplementing opening of the compressor with one end of the second heat exchanging pipe, the increasing enthalpy valve, the other end exchanges heat with described second
One end of pipeline is connected to, and first heat exchanging pipe one end is connected to the indoor heat exchanger, the other end and the throttling set
Connection, the connecting pipeline between increasing enthalpy throttle valve one end and the indoor heat exchanger and first heat exchanging pipe are connected to,
The other end is connected to one end far from the increasing enthalpy valve of second heat exchanging pipe.
The tonifying Qi pipeline includes aeration valve, and one end of the aeration valve is connected to the gas supplementing opening of the compressor, another
End is connected to the exhaust outlet of the compressor.
The hydrojet pipeline includes liquid injection valve, and one end of the liquid injection valve is connected to the air entry of the compressor, another
End is connected to the connecting pipeline between the indoor heat exchanger and the throttling set.
The increasing enthalpy pipeline includes increasing enthalpy valve, economizer and increasing enthalpy throttle valve, and the economizer includes the first heat exchanging pipe
It is connected to the gas supplementing opening of the compressor with one end of the second heat exchanging pipe, the increasing enthalpy valve, the other end exchanges heat with described second
One end of pipeline is connected to, and first heat exchanging pipe one end is connected to the indoor heat exchanger, the other end and the throttling set
Connection, the connecting pipeline between increasing enthalpy throttle valve one end and the indoor heat exchanger and first heat exchanging pipe are connected to,
The other end is connected to one end far from the increasing enthalpy valve of second heat exchanging pipe, and the tonifying Qi pipeline includes aeration valve, institute
The one end for stating aeration valve is connected to the gas supplementing opening of the compressor, and the other end is connected to the exhaust outlet of the compressor, the spray
Liquid pipeline includes liquid injection valve, and one end of the liquid injection valve is connected to the air entry of the compressor, and the other end is changed with the interior
Connecting pipeline connection between hot device and the throttling set.
The increasing enthalpy valve, the aeration valve and the liquid injection valve are electric expansion valve or solenoid valve.
The increasing enthalpy throttle valve is electric expansion valve.
The air entry of the compressor is provided with first pressure sensor, and the gas supplementing opening of the compressor is provided with the second pressure
The exhaust outlet of force snesor, the compressor is provided with third pressure sensor and exhaust gas temperature sensor, the outdoor heat exchange
Outdoor environment temperature sensor is provided on device.
A kind of control method of above-mentioned air conditioner heat pump system, it is characterised in that：Including：
General mode, the increasing enthalpy throttle valve, the aeration valve, the liquid injection valve are closed；
Increasing enthalpy pattern, the increasing enthalpy throttle valve, the increasing enthalpy valve are opened, and the aeration valve, the liquid injection valve are closed；
High-pressure ratio pattern, the increasing enthalpy throttle valve are closed, and the aeration valve, the liquid injection valve are opened.
The control method further includes：
Detect target environment temperature T1, T2 (T1>) and outdoor environment temperature t1 T2；
If T1≤t1, the air conditioner heat pump system enters the general mode；
If T2 < t1 < T1, the air conditioner heat pump system enters the increasing enthalpy pattern；
If t1≤T2, the air conditioner heat pump system enters the high-pressure ratio pattern.
The control method further includes in high-pressure ratio pattern：
The pressure of inspiration(Pi) p1 and pressure at expulsion p2 of compressor are detected, and calculates superfeed pressure P=f (p1, p2)；
The aperture of aeration valve is adjusted according to superfeed pressure P.
The control method further includes in high-pressure ratio pattern：
Set target exhaust temperature range { Tmin, Tmax }；
Delivery temperature t2 is detected, and adjusts hydrojet valve opening, t2 is made to be in { Tmin, Tmax } range.
Air conditioner heat pump system provided by the utility model can be ensured by the way that increasing enthalpy pipeline is arranged in air conditioner heat pump system
It is worked normally when in compared with low ambient temperature, improves the refrigerant quality internal circulating load of compressor under same rotating speed, using more
Refrigerant takes away the heat of compressor electric motor, and compressor electric motor is made preferably to be cooled down, and reduces delivery temperature, is mended by being arranged
Air pipe and hydrojet pipeline, can increase the pressure at the end of the compression of compressor, so realize system pressure than raising, together
When some refrigerant liquid compressor is entered by liquid injection valve, improve circulating mass of refrigerant, reduce the compressor air suction degree of superheat, from
And reduce discharge superheat.
Description of the drawings
Fig. 1 is the structural schematic diagram of air conditioner heat pump system provided by the utility model；
In figure：
1, heat exchange cycle pipeline；2, increasing enthalpy pipeline；3, tonifying Qi pipeline；4, hydrojet pipeline；11, compressor；12, four-way valve；
13, indoor heat exchanger；14, throttling set；15, outdoor heat exchanger；21, increasing enthalpy valve；22, economizer；23, increasing enthalpy throttle valve；24,
First heat exchanging pipe；25, the second heat exchanging pipe；31, aeration valve；41, liquid injection valve.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
The present invention will be further described in detail for example.It should be appreciated that specific embodiment described herein is only used for explaining this
Utility model is not used to limit the utility model.
Air conditioner heat pump system as shown in Figure 1, including heat exchange cycle pipeline 1, tonifying Qi pipeline 3 and hydrojet pipeline 4, it is described to change
Thermal cycle pipeline 1 includes compressor 11, indoor heat exchanger 13, throttling set 14 and outdoor heat exchanger 15, the increasing enthalpy pipeline 2 one
End is connected to the gas supplementing opening of the compressor 11, between the other end and the indoor heat exchanger 13 and the throttling set 14
Connecting pipeline is connected to, and described 3 one end of tonifying Qi pipeline is connected to the gas supplementing opening of the compressor 11, the other end and the compressor 11
Exhaust outlet connection, the company between one end and the indoor heat exchanger 13 and the throttling set 14 of the hydrojet pipeline 4
Logical pipeline connection, the other end are connected to the air entry of the compressor 11, can by the way that tonifying Qi pipeline 3 and hydrojet pipeline 4 is arranged
Increase the pressure at the end of the compression of compressor 11, so realize system pressure than raising, while some refrigerant liquid is logical
It crosses liquid injection valve 41 and enters compressor 11, improve circulating mass of refrigerant, reduce by 11 suction superheat of compressor, be vented to reduce
Temperature.
The air conditioner heat pump system further includes increasing enthalpy pipeline 2, the tonifying Qi of described increasing enthalpy pipeline 2 one end and the compressor 11
Mouth connection, the connecting pipeline between the other end and the indoor heat exchanger 13 and the throttling set 14 are connected to, and pass through and increasing is arranged
Enthalpy pipeline 2 can ensure to work normally when air conditioner heat pump system is in compared with low ambient temperature, improve compressor under same rotating speed
11 refrigerant quality internal circulating load increases the amount into the refrigerant of compressor, to be compressed using more refrigerants
The heat of 11 motor of machine is taken away, and 11 motor of compressor is made preferably to be cooled down, and reduces delivery temperature.
Further include four-way valve 12 in the heat exchange cycle pipeline 1, the four-way valve 12 allows hand over the heat exchange cycle pipe
Road 1 carries out heating cycle or refrigeration cycle.
The increasing enthalpy pipeline 2 includes increasing enthalpy valve 21, economizer 22 and increasing enthalpy throttle valve 23, and the economizer 22 includes first
Heat exchanging pipe 24 and the second heat exchanging pipe 25, one end of the increasing enthalpy valve 21 is connected to the gas supplementing opening of the compressor 11, another
End is connected to one end of second heat exchanging pipe 25, and described first heat exchanging pipe, 24 one end connects with the indoor heat exchanger 13
Logical, the other end is connected to the throttling set 14, described 23 one end of increasing enthalpy throttle valve and the indoor heat exchanger 13 and described the
Connecting pipeline connection between one heat exchanging pipe 24, the other end is with second heat exchanging pipe 25 far from the increasing enthalpy valve 21
One end connection, the medium temperature and medium pressure refrigerant liquid after being condensed in heat exchanger 13 indoors is divided into two parts, and a part enters
22 connector of economizer is further cooled by, and a part enters economizer 22 after 23 reducing pressure by regulating flow of increasing enthalpy throttle valve and connects
Mouthful, since the temperature after reducing pressure by regulating flow is less than the refrigerant liquid at connector, heat exchange occurs therewith, absorbs heat of vaporization
It is flowed out from connector for the refrigerant gas of low-temp low-pressure, enters 11 gas supplementing opening of compressor by increasing enthalpy valve 21, with compressor 11
Internal compressed refrigerant gas mixing, continuation are compressed, and the refrigerant gas for the low-temp low-pressure that gas supplementing opening sucks is passed through
Body improves the refrigerant quality internal circulating load of compressor 11 under same rotating speed, to improve heating effect, while increasing entrance
The amount of the refrigerant of compressor, to be taken away the heat of 11 motor of compressor using more refrigerants so that compressor 11
Motor is preferably cooled down, and delivery temperature is reduced.
The tonifying Qi pipeline 3 includes aeration valve 31, and one end of the aeration valve 31 and the gas supplementing opening of the compressor 11 connect
Logical, the other end is connected to the exhaust outlet of the compressor 11, can be direct by the exhaust that machine 11 is partially compressed by aeration valve 31
Send to the gas supplementing opening of compressor 11, increase the compression ratio of compressor 11, to realize system pressure than raising, for example,
The refrigerant pressure of 11 cooling cycle system of conventional single stage compressor, the sucking of 11 air entry of compressor is P1, and compression travel carries out
Pressure when to 11 gas supplementing opening position of compressor is P2, and pressure when 11 stroke of compressor terminates to discharge compressor 11 is P3,
So, air conditioner heat pump system provided by the present application keeps P1 constant, due to the high temperature and pressure system of the second vapor injection of gas supplementing opening sucking
Refrigerant gas is mixed with the refrigerant gas of 11 internal compression stroke half of compressor, pressure P2 ' the > P2 after mixing, because
This, pressure P3 ' the > P3 at the end of final compression, to realize system pressure than raising, i.e. P3 '/P1 > P3/P1.
The hydrojet pipeline 4 includes liquid injection valve 41, and one end of the liquid injection valve 41 and the air entry of the compressor 11 connect
Logical, the connecting pipeline between the other end and the indoor heat exchanger 13 and the throttling set 14 is connected to, indoor heat exchanger 13
A condensed refrigerant liquid part, by liquid injection valve 41, enters 11 air entry of compressor.
The increasing enthalpy pipeline 2 includes increasing enthalpy valve 21, economizer 22 and increasing enthalpy throttle valve 23, and the economizer 22 includes first
Heat exchanging pipe 24 and the second heat exchanging pipe 25, one end of the increasing enthalpy valve 21 is connected to the gas supplementing opening of the compressor 11, another
End is connected to one end of second heat exchanging pipe 25, and described first heat exchanging pipe, 24 one end connects with the indoor heat exchanger 13
Logical, the other end is connected to the throttling set 14, described 23 one end of increasing enthalpy throttle valve and the indoor heat exchanger 13 and described the
Connecting pipeline connection between one heat exchanging pipe 24, the other end is with second heat exchanging pipe 25 far from the increasing enthalpy valve 21
One end connection, the tonifying Qi pipeline 3 include aeration valve 31, the gas supplementing opening of one end of the aeration valve 31 and the compressor 11
Connection, the other end are connected to the exhaust outlet of the compressor 11, and the hydrojet pipeline 4 includes liquid injection valve 41, the liquid injection valve 41
One end be connected to the air entry of the compressor 11, the other end and the indoor heat exchanger 13 and the throttling set 14 it
Between connecting pipeline connection.
The increasing enthalpy valve 21, the aeration valve 31 and the liquid injection valve 41 are electric expansion valve or solenoid valve or other can
The structure of flow, preferably electric expansion valve are adjusted, to realize the adjusting of pressure and/or flow.
The increasing enthalpy throttle valve 23 is electric expansion valve, to realize the purpose of reducing pressure by regulating flow and flow-rate adjustment.
The air entry of the compressor 11 is provided with first pressure sensor, the pressure of inspiration(Pi) for detecting compressor 11,
The gas supplementing opening of the compressor 11 is provided with second pressure sensor, the superfeed pressure for detecting air conditioner heat pump system, described
The exhaust outlet of compressor 11 is provided with third pressure sensor (pressure at expulsion for detecting compressor 11) and delivery temperature passes
Sensor (delivery temperature for detecting compressor 11) is provided with outdoor environment temperature sensor on the outdoor heat exchanger 15,
For detecting outdoor environment temperature.
A kind of control method of above-mentioned air conditioner heat pump system, it is characterised in that：Including：
General mode, the increasing enthalpy throttle valve 23, the aeration valve 31, the liquid injection valve 41 are closed, and compressor 11 is discharged
The refrigerant gas of high temperature and pressure enter four-way valve 12 by oil eliminator, flow through the condensation release heat of indoor heat exchanger 13,
As the refrigerant liquid of medium temperature and medium pressure, then passes through the refrigerant liquid that throttle part becomes low-temp low-pressure, changed into outdoor
The evaporation of hot device 15 absorbs heat, becomes the refrigerant gas of low-temp low-pressure, flows through four-way valve 12 and enters 11 air entry of compressor, pressure
Contracting machine 11 is discharged after the refrigerant gas the refrigerant gas boil down to high temperature and pressure of low-temp low-pressure；
Increasing enthalpy pattern, the increasing enthalpy throttle valve 23, the increasing enthalpy valve 21 are opened, the aeration valve 31, the liquid injection valve 41
It closes, the medium temperature and medium pressure refrigerant liquid after being condensed in heat exchanger 13 indoors, is divided into two parts, a part is changed into first
Pipe line 24 is further cooled by, and a part enters the second heat exchanging pipe 25 after 23 reducing pressure by regulating flow of increasing enthalpy throttle valve, due to
Temperature after reducing pressure by regulating flow occurs heat exchange, absorbs heat therewith less than the temperature of refrigerant liquid in the first heat exchanging pipe 24
The refrigerant gas that amount is evaporated to low-temp low-pressure is flowed out from the second heat exchanging pipe 25, enters 11 tonifying Qi of compressor by increasing enthalpy valve 21
Mouthful, and compressed refrigerant gas mix inside compressor 11, continues to be compressed；
High-pressure ratio pattern, the increasing enthalpy throttle valve 23 are closed, and the aeration valve 31, the liquid injection valve 41 are opened, compression
The high-temperature high-pressure refrigerant gas that machine 11 is discharged, a part enters 11 gas supplementing opening of compressor by aeration valve 31, with compressor
Compressed refrigerant gas mixing, continuation are discharged after being compressed from 11 exhaust outlet of compressor inside 11, this is followed for tonifying Qi
Ring；An indoor heat exchanger 13 condensed refrigerant liquid part, by liquid injection valve 41, enters 11 air entry of compressor, this
It is recycled for hydrojet.
The control method further includes：
Detect target environment temperature T1, T2 (T1>) and outdoor environment temperature t1 T2；
If T1≤t1, the air conditioner heat pump system enters the general mode；
If T2 < t1 < T1, the air conditioner heat pump system enters the increasing enthalpy pattern；
If t1≤T2, the air conditioner heat pump system enters the high-pressure ratio pattern.
The control method further includes in high-pressure ratio pattern：
The pressure of inspiration(Pi) p1 and pressure at expulsion p2 of compressor 11 are detected, and calculates superfeed pressure P=f (p1, p2)；
The aperture of aeration valve 31 is adjusted according to superfeed pressure P, the adjusting of the aperture keeps current superfeed pressure full for adjusting
Foot-eye second vapor injection pressure P.
The control method further includes in high-pressure ratio pattern：
Set target exhaust temperature range { Tmin, Tmax }；
Delivery temperature t2 is detected, and adjusts 41 aperture of liquid injection valve, t2 is made to be in { Tmin, Tmax } range.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. a kind of air conditioner heat pump system, it is characterised in that：Including heat exchange cycle pipeline (1), tonifying Qi pipeline (3) and hydrojet pipeline
(4), the heat exchange cycle pipeline (1) includes compressor (11), indoor heat exchanger (13), throttling set (14) and outdoor heat exchanger
(15), described tonifying Qi pipeline (3) one end is connected to the gas supplementing opening of the compressor (11), the other end and the compressor (11)
Exhaust outlet is connected to, between one end and the indoor heat exchanger (13) and the throttling set (14) of the hydrojet pipeline (4)
Connecting pipeline is connected to, and the other end is connected to the air entry of the compressor (11).
2. air conditioner heat pump system according to claim 1, it is characterised in that：The air conditioner heat pump system further includes increasing enthalpy pipe
Road (2), described increasing enthalpy pipeline (2) one end are connected to the gas supplementing opening of the compressor (11), the other end and the indoor heat exchanger
(13) the connecting pipeline connection between the throttling set (14).
3. air conditioner heat pump system according to claim 2, it is characterised in that：The increasing enthalpy pipeline (2) includes increasing enthalpy valve
(21), economizer (22) and increasing enthalpy throttle valve (23), the economizer (22) include the first heat exchanging pipe (24) and the second heat exchange
One end of pipeline (25), the increasing enthalpy valve (21) is connected to the gas supplementing opening of the compressor (11), and the other end is changed with described second
One end of pipe line (25) is connected to, and described first heat exchanging pipe (24) one end is connected to the indoor heat exchanger (13), the other end
It is connected to the throttling set (14), described increasing enthalpy throttle valve (23) one end is changed with the indoor heat exchanger (13) and described first
Connecting pipeline connection between pipe line (24), the other end is with second heat exchanging pipe (25) far from the increasing enthalpy valve (21)
One end connection.
4. air conditioner heat pump system according to claim 1, it is characterised in that：The tonifying Qi pipeline (3) includes aeration valve
(31), one end of the aeration valve (31) is connected to the gas supplementing opening of the compressor (11), the other end and the compressor (11)
Exhaust outlet connection.
5. air conditioner heat pump system according to claim 1, it is characterised in that：The hydrojet pipeline (4) includes liquid injection valve
(41), one end of the liquid injection valve (41) is connected to the air entry of the compressor (11), the other end and the indoor heat exchanger
(13) the connecting pipeline connection between the throttling set (14).
6. air conditioner heat pump system according to claim 2, it is characterised in that：The increasing enthalpy pipeline (2) includes increasing enthalpy valve
(21), economizer (22) and increasing enthalpy throttle valve (23), the economizer (22) include the first heat exchanging pipe (24) and the second heat exchange
One end of pipeline (25), the increasing enthalpy valve (21) is connected to the gas supplementing opening of the compressor (11), and the other end is changed with described second
One end of pipe line (25) is connected to, and the first heat exchanging pipe (24) series connection is filled with the indoor heat exchanger (13) and the throttling
Between setting (14), described increasing enthalpy throttle valve (23) one end and the indoor heat exchanger (13) and first heat exchanging pipe (24) it
Between connecting pipeline connection, one end of the separate increasing enthalpy valve (21) of the other end and second heat exchanging pipe (25) is connected to,
The tonifying Qi pipeline (3) includes aeration valve (31), and one end of the aeration valve (31) connects with the gas supplementing opening of the compressor (11)
Logical, the other end is connected to the exhaust outlet of the compressor (11), and the hydrojet pipeline (4) includes liquid injection valve (41), the hydrojet
One end of valve (41) is connected to the air entry of the compressor (11), the other end and the indoor heat exchanger (13) and the throttling
Connecting pipeline connection between device (14).
7. air conditioner heat pump system according to claim 6, it is characterised in that：The increasing enthalpy valve (21), the aeration valve
(31) and the liquid injection valve (41) is electric expansion valve or solenoid valve；The increasing enthalpy throttle valve (23) is electric expansion valve.
8. air conditioner heat pump system according to claim 6, it is characterised in that：The air entry of the compressor (11) is provided with
The gas supplementing opening of first pressure sensor, the compressor (11) is provided with second pressure sensor, the row of the compressor (11)
Gas port is provided with third pressure sensor and exhaust gas temperature sensor, and outdoor environment temperature is provided on the outdoor heat exchanger (15)
Spend sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820576117.8U CN208075218U (en) | 2018-04-20 | 2018-04-20 | Air conditioner heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820576117.8U CN208075218U (en) | 2018-04-20 | 2018-04-20 | Air conditioner heat pump system |
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| CN208075218U true CN208075218U (en) | 2018-11-09 |
Family
ID=64044576
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| CN201820576117.8U Active CN208075218U (en) | 2018-04-20 | 2018-04-20 | Air conditioner heat pump system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592463A (en) * | 2018-04-20 | 2018-09-28 | 珠海格力电器股份有限公司 | Air conditioner heat pump system and control method |
| CN111023362A (en) * | 2019-12-16 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Refrigerant circulation system and air conditioner under heating mode |
| CN111578389A (en) * | 2020-05-09 | 2020-08-25 | 宁波奥克斯电气股份有限公司 | Outer machine heat exchanger, high-temperature-prevention control device and control method and air conditioner |
-
2018
- 2018-04-20 CN CN201820576117.8U patent/CN208075218U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592463A (en) * | 2018-04-20 | 2018-09-28 | 珠海格力电器股份有限公司 | Air conditioner heat pump system 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 |
| CN111023362A (en) * | 2019-12-16 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Refrigerant circulation system and air conditioner under heating mode |
| CN111578389A (en) * | 2020-05-09 | 2020-08-25 | 宁波奥克斯电气股份有限公司 | Outer machine heat exchanger, high-temperature-prevention control device and control method and air conditioner |
| CN111578389B (en) * | 2020-05-09 | 2021-12-10 | 宁波奥克斯电气股份有限公司 | Outer machine heat exchanger, high-temperature-prevention control device and control method and air conditioner |
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