CN103940138B - Air-Cooled Heat Pump Unit - Google Patents
Air-Cooled Heat Pump Unit Download PDFInfo
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- CN103940138B CN103940138B CN201410129986.2A CN201410129986A CN103940138B CN 103940138 B CN103940138 B CN 103940138B CN 201410129986 A CN201410129986 A CN 201410129986A CN 103940138 B CN103940138 B CN 103940138B
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- Prior art keywords
- pipeline
- air
- pressure
- side heat
- pump unit
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- Expired - Fee Related
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- 239000002826 coolant Substances 0.000 claims abstract description 54
- 238000005057 refrigeration Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 230000008014 freezing Effects 0.000 abstract description 6
- 238000007710 freezing Methods 0.000 abstract description 6
- 230000009172 bursting Effects 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Air Conditioning Control Device (AREA)
- Compressor (AREA)
Abstract
The invention discloses a kind of Air-Cooled Heat Pump Unit.In described Air-Cooled Heat Pump Unit, increase and have QI invigorating pipeline and pressure-equalizing control device, described QI invigorating pipeline is connected between the air vent of described compressor and the second end of described water-side heat, the force value of coolant that described pressure-equalizing control device is discharged for the first end detecting described water-side heat when kind of refrigeration cycle, and open, according to testing result, the part gaseous coolant that described QI invigorating pipeline produces for described compressor and enter described water-side heat or close described QI invigorating pipeline.The present invention is capable of in time improving the coolant pressure of water-side heat and temperature when kind of refrigeration cycle, to solve the water-side heat bursting by freezing problem when kind of refrigeration cycle.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of Air-Cooled Heat Pump Unit.
Background technology
The water-side heat of Air-Cooled Heat Pump Unit generally uses the heat exchanger of three kinds of forms, respectively shell-tube type
Heat exchanger, plate change formula heat exchanger and double pipe heat exchanger.And in existing Air-Cooled Heat Pump Unit, water side
Heat exchanger bursting by freezing is its most common fault, is also to affect the most serious fault.Existing technology can not be complete
Entirely preventing water-side heat from leaking, and water side once leaks, coolant and water will interpenetrate, coolant
Once intaking in pipeline, whole refrigerant pipeline system will be unable to use, and compressor is once intake, can
Can cause burning compressor, even if not burning in the short time, compressor also will be unable to use, and the most not
It is beneficial to maintenance.
Summary of the invention
Present invention is primarily targeted at a kind of Air-Cooled Heat Pump Unit of offer, it is intended to during kind of refrigeration cycle in time
Improve coolant pressure and the temperature of water-side heat, to solve the water-side heat bursting by freezing when kind of refrigeration cycle
Problem.
To achieve these goals, the Air-Cooled Heat Pump Unit that the present invention provides, divide including compressor, gas-liquid
From device, cross valve, water-side heat, throttle part and air side heat exchanger, described compressor, gas-liquid
Segregation apparatus, cross valve, water-side heat, throttle part and air side heat exchanger connect formation by pipeline
Closed circuit, the first end of described water-side heat is connected with described cross valve by the first pipeline, institute
The second end stating water-side heat is connected with the first end of described air side heat exchanger by the second pipeline, institute
Stating gas-liquid separation device to be located in described second pipeline, described Air-Cooled Heat Pump Unit also includes:
QI invigorating pipeline, described QI invigorating pipeline is connected to the air vent of described compressor and described water-side heat
The second end between, and
Pressure-equalizing control device, described pressure-equalizing control device be installed on described QI invigorating pipeline for
The force value of the coolant of the first end discharge of described water-side heat is detected when kind of refrigeration cycle, and according to inspection
Survey result and open the described water side of part gaseous coolant entrance that described QI invigorating pipeline produces for described compressor
Heat exchanger or close described QI invigorating pipeline.
Preferably, described pressure-equalizing control device includes pressure pipeline, valve body, piston, spool and valve
Block, described valve body is installed on described QI invigorating pipeline, in described piston is located at described valve body and by described valve
The inner space of body is separated into the first chamber and the second chamber, and described first chamber is provided with has preset pressure
The compressed gas of value, described valve block is located in described QI invigorating pipeline and by described spool and described piston phase
Connecting, described pressure pipeline is connected between described second chamber and described first pipeline, with by described the
Two chambers are connected with described first pipeline.
Preferably, it is more than or equal to described compressed gas when the force value of the coolant flowing through described first pipeline
Preset pressure value time, described piston compresses described valve block by described spool makes described valve block be maintained at institute
State in QI invigorating pipeline to close described QI invigorating pipeline；When the force value of the coolant flowing through described first pipeline is little
When the preset pressure value of described compressed gas, described compressed gas promotes piston away from described first chamber
Motion, described piston drives described valve block to move to open described QI invigorating pipeline for institute by described spool
State the part gaseous coolant described water-side heat of entrance that compressor produces.
Preferably, described pressure-equalizing control device also includes that fixed plate, described fixed plate are located at described valve
Internal and between described piston and described valve block, described fixed plate is communicated with described fixed plate two
The installation through hole that the sieve aperture of side and the described spool of confession pass.
Preferably, the compressed gas in described first chamber is nitrogen.
Preferably, described pressure-equalizing control device includes control valve, pressure detector and controller, institute
State control valve to be located in described QI invigorating pipeline to control opening and closing of described QI invigorating pipeline, described pressure
Detector is located in described first pipeline to detect the force value of the coolant flowed through in described first pipeline, institute
Stating storage in controller has preset pressure value, described controller to be connected with described control valve and pressure detector
Connect, for receiving the force value of the coolant flowed through in described first pipeline that described pressure detector is detected
And compare with described preset pressure value, and control opening of described control valve according to comparative result
With closedown.
Preferably, when the force value that described pressure detector detects is less than described preset pressure value, institute
State the described control valve of controller control and open the part gaseous state that described QI invigorating pipeline produces for described compressor
Coolant enters described water-side heat；The force value detected when described pressure detector is more than or equal to institute
When stating preset pressure value, described controller controls described control valve and cuts out described QI invigorating pipeline.
Preferably, described control valve is electromagnetic valve, and described pressure detector is pressure transducer.
Preferably, described preset pressure value more than the evaporator refrigerant temperature in described closed circuit be 0 DEG C time institute
Corresponding force value.
Preferably, the coolant in described closed circuit is R410A, and described preset pressure value is more than or equal to
0.7MPa。
The Air-Cooled Heat Pump Unit of the present invention, by setting up QI invigorating pipeline and pressure-equalizing control device, in system
During SAPMAC method, when pressure-equalizing control device detects the pressure of the coolant of the first end discharge of water-side heat
When force value is less than described preset pressure value, it is possible to open described QI invigorating pipeline by pressure-equalizing control device
The part gaseous coolant produced for described compressor enters described water-side heat, improves the heat exchange of water side
Pressure in device (i.e. vaporizer) and temperature, to regulate the coolant of the first end discharge of water-side heat
Force value is to more than or equal to described preset pressure value, thus prevents from carrying out the water of heat exchange with water-side heat
Freeze and bursting by freezing water-side heat.
Accompanying drawing explanation
Fig. 1 is the structural representation of Air-Cooled Heat Pump Unit one embodiment of the present invention.
Fig. 2 is the enlarged diagram in Fig. 1 at A.
Fig. 3 is the structural representation of another embodiment of Air-Cooled Heat Pump Unit of the present invention.
Fig. 4 is the enlarged diagram in Fig. 3 at B.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Should be appreciated that detailed description of the invention described herein, only in order to explain the present invention, is not used to
Limit the present invention.
The present invention provides a kind of Air-Cooled Heat Pump Unit, with reference to Fig. 1, in one embodiment of this invention, air-cooled
Source pump 100, including compressor 1, gas-liquid separation device 2, cross valve 3, water-side heat 4, joint
Stream unit 5 and air side heat exchanger 6.Described compressor 1, gas-liquid separation device 2, cross valve 3, water side
Heat exchanger 4, throttle part 5 and air side heat exchanger 6 connect formation closed circuit, wherein, institute by pipeline
State four interfaces (i.e. D, E, S, C interface) of cross valve 33 tool in Air-Cooled Heat Pump Unit 100
Body connection is the known technology of this technical field, does not repeats them here.The first of described water-side heat 4
End 41 is connected with described cross valve 3 by the first pipeline 71, the second end of described water-side heat 4
42 are connected with the first end 61 of described air side heat exchanger 6 by the second pipeline 72, described gas-liquid separation
Device 2 is located in described second pipeline 72.Described Air-Cooled Heat Pump Unit 100 also include QI invigorating pipeline 8 and
Pressure-equalizing control device 9, described QI invigorating pipeline 8 is connected to air vent 11 and the institute of described compressor 1
Stating between the second end 42 of water-side heat 4, described pressure-equalizing control device 9 is installed on described QI invigorating
The coolant discharged for the first end 41 detecting described water-side heat 4 when kind of refrigeration cycle on pipeline 8
Force value, and open, according to testing result, the portion that described QI invigorating pipeline 8 produces for described compressor 1
Gaseous coolant is divided to enter described water-side heat 4 or close described QI invigorating pipeline 8.
In described Air-Cooled Heat Pump Unit 100, by setting up QI invigorating pipeline 8 and pressure-equalizing control device 9,
When kind of refrigeration cycle, when pressure-equalizing control device 9 detects that the first end 41 of water-side heat 4 is discharged
The force value of coolant less than preset pressure value time, it is possible to opened described by pressure-equalizing control device 9
The part gaseous coolant that QI invigorating pipeline 8 produces for described compressor 1 enters described water-side heat 4, comes
Improve water-side heat 4(i.e. vaporizer) in pressure and temperature, to regulate the first of water-side heat 4
The force value of the coolant of end 41 discharge is extremely more than or equal to preset pressure value, thus prevents and water-side heat
4 water freezings carrying out heat exchange and bursting by freezing water-side heat 4.
Referring to Fig. 2, in the present embodiment, described pressure-equalizing control device 9 includes pressure pipeline
91, valve body 92, piston 94, spool 95 and valve block 96.Described valve body 92 is installed on described QI invigorating pipeline
On 8, in described piston 94 is located at described valve body 92 and the inner space of described valve body 92 is separated into the
One chamber 921 and the second chamber 922, described first chamber 921 is provided with the compressed gas with preset pressure value
Body, described valve block 96 is located in described QI invigorating pipeline 8 and by described spool 95 and described piston 94 phase
Connecting, described pressure pipeline 91 is connected between described second chamber 922 and described first pipeline 71,
So that described second chamber 922 is connected with described first pipeline 71.
When pressure-equalizing control device 9 works, when the force value of the coolant flowing through described first pipeline 71 is big
In or during equal to the preset pressure value of described compressed gas, described piston 94 is compressed by described spool 95
Described valve block 96 makes described valve block 96 be maintained in described QI invigorating pipeline 8 to close described QI invigorating pipeline 8；
When flowing through the preset pressure value that the force value of coolant of described first pipeline 71 is less than described compressed gas,
Described compressed gas promotes piston 94 to move away from described first chamber 921, and described piston 94 passes through institute
State spool 95 to drive described valve block 96 to move to open described QI invigorating pipeline 8 to produce for described compressor 1
Raw part gaseous coolant enters described water-side heat 4.
In the present embodiment, described pressure-equalizing control device 9 also includes fixed plate 93, described fixed plate
In 93 are located at described valve body 92 and between described piston 94 and described valve block 96, described fixed plate
It is communicated with the sieve aperture (not shown) of described fixed plate 93 both sides on 93 and wears for described spool 95
The installation through hole (not indicating in figure) crossed.By arranging fixed plate 93, when flowing through described first pipeline 71
The force value of coolant more than or equal to the preset pressure value of described compressed gas time, piston 94 is at the first pipe
It is resisted against described fixed plate 93 under the pressure effect of the coolant on road 71, is come piston by fixed plate 93
94 carry out spacing, are so possible to prevent the pressure of the coolant of the first pipeline 71 when heating circulation excessive and damage
Bad QI invigorating pipeline 8.
Described preset pressure value selects according to the type of the coolant in closed circuit, it is preferable that described
The force value that preset pressure value is corresponding when being 0 DEG C more than the evaporator refrigerant temperature in described closed circuit, this
Sample can control the evaporating temperature of coolant the most completely more than 0 DEG C, freezes efficiently solving water-side heat 4
The problem split.As a example by coolant is as R410A, its evaporating temperature is that 0 DEG C of corresponding force value is less than
0.7MPa, i.e. corresponding when pressure is equal to 0.7MPa evaporating temperature is ＞ 0 DEG C, the most described default pressure
Force value selects should be greater than or equal to 0.7MPa.When coolant is other material, those skilled in the art
Thought according to the present invention can reasonably select preset pressure value according to the evaporation characteristics of coolant.
In the present embodiment, the coolant in described closed circuit is R410A, in described first chamber 921
The preset pressure value of compressed gas more than or equal to 0.7MPa.When the coolant in closed circuit is other thing
During matter, those skilled in the art can according to the evaporation characteristics of coolant reasonably according to the thought of the present invention
Select preset pressure value.
Preferably, the compressed gas in described first chamber 921 uses physics and chemical characteristic more stable
Gas, carry out the accuracy of antifreeze control improving described Air-Cooled Heat Pump Unit 100 as far as possible.Described
Compressed gas in first chamber 921 is more preferably nitrogen, because nitrogen obtains easily and low cost.
In the present embodiment, pressure-equalizing control device 9 is mechanism structure formula, its easy to control and cost
Low.In other embodiments, the structure that pressure-equalizing control device can also take other form, as long as
Pressure balance needed for being capable of the present invention controls to require.
Refer to Fig. 3 and Fig. 4, in another embodiment of the invention, Air-Cooled Heat Pump Unit 100a is same
Including compressor 1, gas-liquid separation device 2, cross valve 3, water-side heat 4, throttle part 5 and wind
The Air-Cooled Heat Pump Unit 100 of side heat exchanger 6, Air-Cooled Heat Pump Unit 100a of the present embodiment and previous embodiment
Differ only in pressure-equalizing control device 9a.
In the present embodiment, described pressure-equalizing control device 9a includes control valve 91a, pressure detector
92a and controller 93a.Described control valve 91a is located in described QI invigorating pipeline 8 to control described blowdown pipe
The opening and closing of road 8, described pressure detector 92a is located in described first pipeline 71 and flows through with detection
The force value of the coolant in described first pipeline 71, in described controller 93a, storage has described preset pressure
Value, described controller 93a is connected with described control valve 91a and pressure detector 92a, is used for receiving institute
State the force value of the coolant flowed through in the described first via 71 that pressure detector 92a is detected pre-with described
If force value compares, and control opening and closing of described control valve 91a according to comparative result.
During described pressure-equalizing control device 9a work, when the pressure that described pressure detector 92a detects
When value is less than described preset pressure value, described controller 93a controls described control valve 91a and opens described QI invigorating
The part gaseous coolant that pipeline 8 produces for described compressor 1 enters described water-side heat 4；When described
When the force value that pressure detector 92a detects is more than or equal to described preset pressure value, described controller
93a controls described control valve 91a and closes described QI invigorating pipeline 8.
In the present embodiment, described control valve 91a is electromagnetic valve, and described pressure detector 92a is that pressure passes
Sensor.
Described preset pressure value selects according to the type of the coolant in closed circuit, it is preferable that described
The force value that preset pressure value is corresponding when being 0 DEG C more than the evaporator refrigerant temperature in described closed circuit, this
Sample can control the evaporating temperature of coolant the most completely more than 0 DEG C, freezes efficiently solving water-side heat 4
The problem split.As a example by coolant is as R410A, its evaporating temperature is that 0 DEG C of corresponding force value is less than
0.7MPa, i.e. corresponding when pressure is equal to 0.7MPa evaporating temperature is ＞ 0 DEG C, the most described default pressure
Force value selects should be greater than or equal to 0.7MPa.When coolant is other material, those skilled in the art
Thought according to the present invention can reasonably select preset pressure value according to the evaporation characteristics of coolant.
The invention is not limited in embodiment of above, under technology contents disclosed in above-mentioned embodiment,
Various change can also be carried out.Every equivalent structure utilizing description of the invention and accompanying drawing content to be made becomes
Change, or be directly or indirectly used in other relevant technical fields, be the most in like manner included in the patent of the present invention
In protection domain.
Claims (10)
1. an Air-Cooled Heat Pump Unit, including compressor, gas-liquid separation device, cross valve, the heat exchange of water side
Device, throttle part and air side heat exchanger, described compressor, gas-liquid separation device, cross valve, water side are changed
Hot device, throttle part and air side heat exchanger connect formation closed circuit, described water-side heat by pipeline
The first end be connected with described cross valve by the first pipeline, the second end of described water-side heat passes through
Second pipeline is connected with the first end of described air side heat exchanger, and described gas-liquid separation device is located at described
In two pipelines, it is characterised in that described Air-Cooled Heat Pump Unit also includes:
QI invigorating pipeline, described QI invigorating pipeline is connected to the air vent of described compressor and described water-side heat
The second end between, and
Pressure-equalizing control device, described pressure-equalizing control device be installed on described QI invigorating pipeline with
The force value of coolant that the first end of described water-side heat is discharged is detected when in kind of refrigeration cycle, and according to
Testing result opens the part gaseous coolant described water of entrance that described QI invigorating pipeline produces for described compressor
Side heat exchanger or close described QI invigorating pipeline.
2. Air-Cooled Heat Pump Unit as claimed in claim 1, it is characterised in that described pressure balance controls
Device includes pressure pipeline, valve body, piston, spool and valve block, and described valve body is installed on described blowdown pipe
Lu Shang, described piston be located in described valve body and the inner space of described valve body be separated into the first chamber with
Second chamber, described first chamber is provided with the compressed gas with preset pressure value, and described valve block is located at institute
Stating in QI invigorating pipeline and be connected with described piston by described spool, described pressure pipeline is connected to described
Between second chamber and described first pipeline, so that described second chamber is connected with described first pipeline.
3. Air-Cooled Heat Pump Unit as claimed in claim 2, it is characterised in that when flowing through described first pipe
When the force value of the coolant on road is more than or equal to the preset pressure value of described compressed gas, described piston passes through
Described spool compresses described valve block makes described valve block be maintained in described QI invigorating pipeline to close described blowdown pipe
Road；When flowing through the preset pressure value that the force value of coolant of described first pipeline is less than described compressed gas,
Described compressed gas promotes piston to be driven by described spool away from described first chamber movement, described piston
The part gaseous coolant that the motion of described valve block produces for described compressor to open described QI invigorating pipeline enters
Described water-side heat.
4. Air-Cooled Heat Pump Unit as claimed in claim 2, it is characterised in that described pressure balance controls
Device also includes that fixed plate, described fixed plate are located in described valve body and are positioned at described piston and described valve block
Between, the sieve aperture that described fixed plate is communicated with described fixed plate both sides and the peace passed for described spool
Dress through hole.
5. Air-Cooled Heat Pump Unit as claimed in claim 4, it is characterised in that in described first chamber
Compressed gas is nitrogen.
6. Air-Cooled Heat Pump Unit as claimed in claim 1, it is characterised in that described pressure balance controls
Device include control valve, pressure detector and controller, described control valve be located in described QI invigorating pipeline with
Controlling opening and closing of described QI invigorating pipeline, described pressure detector is located in described first pipeline with inspection
The force value of flow measurement coolant in described first pipeline, in described controller, storage has preset pressure value,
Described controller is connected with described control valve and pressure detector, is used for receiving described pressure detector institute
The force value of the coolant flowed through in described first pipeline of detection also compares with described preset pressure value,
And control opening and closing of described control valve according to comparative result.
7. Air-Cooled Heat Pump Unit as claimed in claim 6, it is characterised in that when described pressure detector
When the force value detected is less than described preset pressure value, described controller controls described control valve and opens institute
State the part gaseous coolant described water-side heat of entrance that QI invigorating pipeline produces for described compressor；Work as institute
When stating force value that pressure detector detects more than or equal to described preset pressure value, described controller control
Make described control valve and close described QI invigorating pipeline.
8. Air-Cooled Heat Pump Unit as claimed in claim 6, it is characterised in that described control valve is electromagnetism
Valve, described pressure detector is pressure transducer.
9. the Air-Cooled Heat Pump Unit as described in claim 2 or 6, it is characterised in that described preset pressure
The force value that value is corresponding when being 0 DEG C more than the evaporator refrigerant temperature in described closed circuit.
10. Air-Cooled Heat Pump Unit as claimed in claim 9, it is characterised in that in described closed circuit
Coolant be R410A, described preset pressure value be more than or equal to 0.7MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129986.2A CN103940138B (en) | 2014-04-01 | 2014-04-01 | Air-Cooled Heat Pump Unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129986.2A CN103940138B (en) | 2014-04-01 | 2014-04-01 | Air-Cooled Heat Pump Unit |
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| Publication Number | Publication Date |
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| CN103940138A CN103940138A (en) | 2014-07-23 |
| CN103940138B true CN103940138B (en) | 2016-08-17 |
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| CN201410129986.2A Expired - Fee Related CN103940138B (en) | 2014-04-01 | 2014-04-01 | Air-Cooled Heat Pump Unit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023373A (en) * | 2020-01-02 | 2020-04-17 | 珠海格力电器股份有限公司 | Heat pump system and air conditioner |
| CN112963979A (en) * | 2021-03-14 | 2021-06-15 | 北京工业大学 | Overlapping heat pump system capable of realizing work cycle conversion |
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| CN1800747A (en) * | 2005-11-25 | 2006-07-12 | 珠海格力电器股份有限公司 | Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same |
| CN2926935Y (en) * | 2006-06-14 | 2007-07-25 | 珠海格力电器股份有限公司 | Low-tmperature hot-pump air-conditioner system |
| CN202560563U (en) * | 2012-04-10 | 2012-11-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, air conditioner system comprising same and heat pump water heater system |
| CN202813762U (en) * | 2012-10-25 | 2013-03-20 | 浙江万宝新能源科技有限公司 | Air source heat pump water heater system with mixing working medium air supply in low-temperature environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265977Y (en) * | 2008-08-26 | 2009-07-01 | 广西诚基永信太阳能科技工程有限公司 | Air source heat pump units with air compensating pipeline |
| CN201666698U (en) * | 2009-12-31 | 2010-12-08 | 海信科龙电器股份有限公司 | Air conditioner capable of increasing low-temperature heating quantity |
| CN101936600B (en) * | 2010-09-15 | 2012-08-01 | 江苏天舒电器有限公司 | Self-regulating steady-state low-temperature heat-pump water heater and operating method thereof |
| CN201983513U (en) * | 2011-04-18 | 2011-09-21 | 江苏天舒电器有限公司 | Low-temperature air-compensation air source heat pump water heater |
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2014
- 2014-04-01 CN CN201410129986.2A patent/CN103940138B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800747A (en) * | 2005-11-25 | 2006-07-12 | 珠海格力电器股份有限公司 | Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same |
| CN2926935Y (en) * | 2006-06-14 | 2007-07-25 | 珠海格力电器股份有限公司 | Low-tmperature hot-pump air-conditioner system |
| CN202560563U (en) * | 2012-04-10 | 2012-11-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, air conditioner system comprising same and heat pump water heater system |
| CN202813762U (en) * | 2012-10-25 | 2013-03-20 | 浙江万宝新能源科技有限公司 | Air source heat pump water heater system with mixing working medium air supply in low-temperature environment |
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| CN103940138A (en) | 2014-07-23 |
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