CN106247675A - Heat pump - Google Patents
Heat pump Download PDFInfo
- Publication number
- CN106247675A CN106247675A CN201610676184.2A CN201610676184A CN106247675A CN 106247675 A CN106247675 A CN 106247675A CN 201610676184 A CN201610676184 A CN 201610676184A CN 106247675 A CN106247675 A CN 106247675A
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- Prior art keywords
- interface
- heat
- pump
- water
- heat pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a kind of heat pump, including: compressor, compressor has air entry and air vent；Controlling device, control device and have first to fourth interface, first interface is connected with air entry, and the 3rd interface is connected with air vent；Heat exchanger, the first end of heat exchanger and the second interface are connected；Shell and tube exchanger, the first end of shell and tube exchanger and the 4th interface are connected, and shell and tube exchanger is formed heat exchange water inlet and heat exchange outlet；Throttling arrangement, throttling arrangement is located between the second end of heat exchanger and the second end of shell and tube exchanger；Hydraulic module, intake tunnel and exhalant canal it is formed with on hydraulic module, first end of intake tunnel has the water inlet interface being connected with heat exchange water inlet and the second end has water inlet, first end of exhalant canal has the water outlet mouthpiece being connected with heat exchange outlet and the second end has outlet, and intake tunnel is provided with water pump.According to the heat pump of the present invention, efficiency of assembling is high and easy for installation.
Description
Technical field
The present invention relates to cooling and warming technical field, especially relate to a kind of heat pump.
Background technology
In correlation technique, typically only only meet refrigeration and/or unit (this unit bag of heating needs due to heat pump
Include compressor, control device, heat exchanger, shell and tube exchanger and throttling arrangement) so that user needs to reserve at unit
Adapter outside be the most again equipped with the auxiliary device such as water pump, flow controller, thus the great inconvenience of cause the user.And
And, it is a set of that the design of the auxiliary device such as the water pump of coupling, flow controller is relative special with installation for a user with unit
Industry and complicated, and, actually used in, the installation of the auxiliary device such as water pump, flow controller is easy to be limited by place, peace
Dress is inconvenient for.Additionally, the parts lack of standardization buying of engineering is numerous and diverse in addition, random type selecting and universal difference, for whole heat pump
Installation and the practicality of system have larger difference, it is difficult to ensure that heat pump Effec-tive Function.
Summary of the invention
Present invention seek to address that one of technical problem present in prior art.To this end, it is an object of the present invention to
Propose a kind of heat pump, it is ensured that heat pump Effec-tive Function, be very easy to user.
According to the heat pump of the present invention, including: compressor, described compressor has air entry and air vent；Control dress
Putting, described control device has first interface and is connected with described air entry to the 4th interface, described first interface, the 3rd interface with
Described air vent is connected；Heat exchanger, the first end of described heat exchanger is connected with described second interface；Shell and tube exchanger, described
First end of shell and tube exchanger is connected with described 4th interface, described shell and tube exchanger is formed heat exchange water inlet and changes
Hot water outlet；Throttling arrangement, described throttling arrangement is located at second end and the second of described shell and tube exchanger of described heat exchanger
Between end；Hydraulic module, described hydraulic module is formed intake tunnel and exhalant canal, the first end tool of described intake tunnel
Have the water inlet interface being connected with described heat exchange water inlet and the second end to have water inlet, the first end of described exhalant canal have with
Water outlet mouthpiece and the second end that described heat exchange outlet is connected have outlet, and described intake tunnel is provided with water pump.
According to the heat pump of the present invention, refrigeration can be met simultaneously, heat needs.It is arranged on heat pump system by hydraulic module
The inside of system, is neither limited by outside place, saves installing space, can choose to install flexibly again, and again be equipped with water without user
The auxiliary devices such as pump, are very easy to user, and hydraulic module matches with the unit of heat pump simultaneously, it is ensured that heat pump
Effec-tive Function.Additionally, the operation of hydraulic module can avoid the injuries such as frozen pipe, improve the security performance of heat pump.
It addition, also can have a following additional technical feature according to the heat pump of the present invention:
According to one embodiment of present invention, described hydraulic module is detachably connected with described shell and tube exchanger.
According to one embodiment of present invention, along the flow direction of described intake tunnel, described intake tunnel sets successively
There are water filter, expansion drum and water pump.
According to one embodiment of present invention, heat pump farther includes: branch road, and the first end of described branch road is with described
Intake tunnel is connected and between described water filter and described water pump, and wherein said expansion drum is located at the second of described branch road
End.
According to one embodiment of present invention, described water inlet interface and described heat exchange water inlet, described water outlet mouthpiece and institute
State and be connected by connecting hose respectively between heat exchange outlet.
According to one embodiment of present invention, described hydraulic module includes isolating casing, wherein said intake tunnel and institute
State exhalant canal to be located on described isolation casing.
According to one embodiment of present invention, described compressor is scroll compressor.
According to one embodiment of present invention, described heat exchanger is air cooling heat exchanger.
According to one embodiment of present invention, described heat exchanger is finned heat exchanger.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment and will become
Substantially with easy to understand, wherein:
Fig. 1 is the schematic diagram of heat pump according to embodiments of the present invention.
Reference:
100: heat pump；
1: water conservancy module；
12: intake tunnel；121: water inlet；122: water inlet interface；123: water filter；
124: water pump；125: the first connecting hoses；
13: exhalant canal: 131: outlet；132: water outlet mouthpiece；133: the second connecting hoses；
14: branch road；141: the first ends；142: the second ends；143: expansion drum；
15: isolation casing；
2: compressor；21: air entry；22: air vent；
3: control device；31: first interface；32: the second interfaces；33: the three interfaces；34: the four interfaces；
4: heat exchanger；41: the first ends；42: the second ends；
5: shell and tube exchanger；51: the first ends；52: the second ends；53: heat exchange water inlet；54: heat exchange outlet；
6: throttling arrangement.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " middle ", " on ", the orientation of the instruction such as D score or position
Relation is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies description rather than refer to
Show or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as limitation of the present invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For this area
For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
Below with reference to Fig. 1, heat pump 100 according to embodiments of the present invention is described.
As it is shown in figure 1, heat pump 100 according to embodiments of the present invention, including: compressor 2, control device 3, heat exchanger
4, shell and tube exchanger 5, throttling arrangement 6 and hydraulic module 1.
Compressor 2 has air entry 21 and air vent 22.Control device 3 and there is first interface the 31, second interface the 32, the 3rd
Interface 33 and the 4th interface 34, first interface 31 is connected with air entry 21, and the 3rd interface 33 is connected with air vent 22.Heat exchanger 4
The first end 41 be connected with the second interface 32.First end 51 of shell and tube exchanger 5 is connected with the 4th interface 34, shell-tube type heat exchange
Heat exchange water inlet 53 and heat exchange outlet 54 it is formed with on device 5.Throttling arrangement 6 is located at the second end 42 and shell-tube type of heat exchanger 4
Between second end 52 of heat exchanger 5.Intake tunnel 12 and exhalant canal 13 it is formed with, the of intake tunnel 12 on hydraulic module 1
One end has the water inlet interface 122 being connected with heat exchange water inlet 53, and the second end of intake tunnel 12 has water inlet 121, goes out
First end of aquaporin 13 has the water outlet mouthpiece 132 being connected with heat exchange outlet 54, and the second end of exhalant canal 13 has
Outlet 131, intake tunnel 12 is provided with water pump 124.Alternatively, throttling arrangement 6 is electric expansion valve, it is of course also possible to be
Capillary tube etc..
Wherein, freezing or in heating operations at heat pump 100, hydraulic module 1 can be in duty.Water is permissible
Enter intake tunnel 12 from water inlet 121, and flow out from water inlet interface 122, flow to shell and tube exchanger 5 through heat exchange water inlet 53
In, participate in the heat transfer process of shell and tube exchanger 5；After heat exchange, the hot water or the cold water that obtain flow out from heat exchange outlet 54, and warp
Water outlet mouthpiece 132 flows into exhalant canal 13, finally flows out from outlet 131, uses for user.Here, it should be noted that
In heat pump 100 process of refrigerastion, due to the flowing of water in hydraulic module 1, the part system of shell and tube exchanger 5 can be taken away
Cold, such that it is able to avoid the destructive injuries such as frozen pipe, improves the security performance of heat pump 100.
When heat pump 100 freezes, the gaseous refrigerant of low-temp low-pressure enters compressor 2 from air entry 21, is compressed
The gaseous refrigerant forming High Temperature High Pressure after machine 2 compression flows out from air vent 22, enters through the 3rd interface 33 and controls device 3, from
Second interface 32 flows out, and enters in heat exchanger 4 through the first end 41 of heat exchanger 4, through heat exchange, is cooled to cryogenic high pressure liquid
State cold-producing medium flows out from the second end 42 of heat exchanger 4, becomes low-temp low-pressure gas liquid mixture after being then passed through throttling arrangement 6, from
Second end 52 of shell and tube exchanger 5 enters in shell and tube exchanger 5, again becomes low-temp low-pressure gaseous refrigerant after heat absorption,
Flow out from the first end 51 of shell and tube exchanger 5, through the 4th interface 34 inflow control device 3, flow out through inhaling from first interface 31
QI KOU 21 enters compressor 2, so circulates, to realize refrigeration.
When heat pump 100 heats, the gaseous refrigerant of low-temp low-pressure enters compressor 2 from air entry 21, is compressed
The gaseous refrigerant forming High Temperature High Pressure after machine 2 compression flows out from air vent 22, enters through the 3rd interface 33 and controls device 3, from
4th interface 34 flows out, and enters in shell and tube exchanger 5 through the first end 51 of shell and tube exchanger 5, becomes low temperature after heat release
High pressure liquid refrigerant, flows out from the second end 52 of shell and tube exchanger 5, becomes low-temp low-pressure gas-liquid and mix after throttling arrangement 6
Zoarium, enters in heat exchanger 4 through the second end 42 of heat exchanger 4, through heat exchange, again become low-temp low-pressure gaseous refrigerant from
First end 41 of heat exchanger 4 flows out, and through the second interface 32 inflow control device 3, flows out to enter through air entry 21 from first interface 31
Enter compressor 2, so circulate, to realize heating.
Heat pump 100 according to an embodiment of the invention, can meet refrigeration simultaneously, heat needs.Integrated by arranging
Having the hydraulic module 1 of intake tunnel 12, exhalant canal 13 and water pump 124, hydraulic module 1 belongs to a part for heat pump 100,
Can be understood as hydraulic module 1 and be built in the inside of heat pump 100, do not limited by outside place, save installing space, make
It is installed more flexibly and attractive in appearance, and, it is not necessary to user is equipped with the auxiliary devices such as water pump again, can directly use factory to dispatch from the factory
Heat pump 100 carry out integral installation, be very easy to user, simultaneously as hydraulic module 1 and heat pump 100
Unit (include compressor 2, control device 3, heat exchanger 4, shell and tube exchanger 5 and throttling arrangement 6) matches, such that it is able to
Ensure heat pump 100 Effec-tive Function.Additionally, after the integrated hydraulic module of heat pump 100 1, it is easier to unification carries out water pump connection
(water pump joint control refers to can realize between water pump main pump and water pump donkey pump automatically switching, i.e. when water pump main pump is due to maloperation in control
Time out of service etc. reason, water pump donkey pump can start voluntarily, it is ensured that water constant flow), it is to avoid traditional heat pump
Unit hydropenia cause the destructive injury such as frozen pipe, improve the security performance of heat pump 100.
In one embodiment of the invention, hydraulic module 1 is detachably connected with shell and tube exchanger 5.It is to say,
When need not hydraulic module 1, hydraulic module 1 can be taken apart with shell and tube exchanger 5.Such as, heat pump 100 is overall permissible
It is arranged on a sheet metal component, sheet metal component is reserved with the installation site of hydraulic module 1, when not needed, can be by hydraulic module 1
Take apart with shell and tube exchanger 5, and remove from sheet metal component, thus, can be easy to select flexibly to install.
In further embodiment of the present invention, along the flow direction of intake tunnel 12 (such as, shown in the arrow in Fig. 1
Direction), intake tunnel 12 is sequentially provided with water filter 123, expansion drum 143 and water pump 124, as it is shown in figure 1, wherein water mistake
Filter 123 flows through the impurity such as the granule in its water for filtration, to prevent intake tunnel 12 or exhalant canal 13 from blocking,
Thus better ensure that hydraulic module 1 is properly functioning.Expansion drum 143 can be used for storing unnecessary water, or gives when water shortage
Intake tunnel 12 supplements water.Water pump 124 is used for promoting water to flow, and drives water to circulate.
Further, heat pump 100 also includes: branch road 14, and the first end 141 of branch road 14 is connected with intake tunnel 12,
And the first end 141 of branch road 14 is between water filter 123 and water pump 124, wherein expansion drum 143 is located at the second of branch road 14
End 142, as shown in Figure 1.Thus, by arranging expansion drum 143, due to factors such as water temperature changes in available buffer intake tunnel 12
The water yield that causes, pressure oscillation, make hydraulic module 1 work more steady.Further, branch road 14 is also provided with temperature sensing
Device and Pressure gauge and exhaust-valve (not shown).
In one embodiment of the invention, by the first connecting hose 125 between water inlet interface 122 and heat exchange water inlet 53
It is connected, is connected, as shown in Figure 1 by the second connecting hose 133 between water outlet mouthpiece 132 with heat exchange outlet 54.Thus, by setting
Put the first connecting hose 125 and the second connecting hose 133, it is possible to decrease vibration and noise, and to expanding with heat and contract with cold of causing because of variations in temperature
Redeeming, it is ensured that interface between water inlet interface 122 and heat exchange water inlet 53 and water outlet mouthpiece 132 and heat exchange outlet 54
Between interface between connect sealing.Here, it should be noted that " the first connecting hose 125 ", " the second connecting hose 133 "
It is the hollow rubber goods playing flexible connection effect between metallic conduit.
In one embodiment of the invention, hydraulic module 1 includes isolating casing 15, and wherein intake tunnel 12 and water outlet are led to
Road 13 is located on isolation casing 15, and water filter 123, water pump 124 and expansion drum 143 are each provided at isolating in casing 15.Such as Fig. 1 institute
Showing, hydraulic module 1 is assembled into an entirety as an entirety by isolating casing 15, thus can be easy to integral installation, dismounting.This
Time hydraulic module 1 can be by water pump 124, intake tunnel 12, exhalant canal 13, water filter the 123, first connecting hose 125,
Two connecting hoses 133, expansion drum 143, the detachable entirety of isolation casing 15 composition.Further, hydraulic module 1 can also include
Electric components, such as, realize the linkage controller (not shown) of water pump joint control.
Alternatively, compressor 2 is scroll compressor, but is not limited to this.
In one embodiment of the invention, heat exchanger 4 is air cooling heat exchanger, but is not limited to this.
Alternatively, heat exchanger 4 is finned heat exchanger, but is not limited to this.
Other of heat pump 100 according to embodiments of the present invention are constituted, and operation is for ordinary skill people
It is all known for Yuan, is not detailed herein.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " concrete example " or " some examples " etc. means to combine this embodiment or the specific features of example description, knot
Structure, material or feature are contained at least one embodiment or the example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
Embodiment can be carried out multiple change in the case of departing from the principle of the present invention and objective, revise, replace and modification, the present invention
Scope limited by claim and equivalent thereof.
Claims (9)
1. a heat pump, it is characterised in that including:
Compressor, described compressor has air entry and air vent；
Controlling device, described control device has first interface and is connected with described air entry to the 4th interface, described first interface,
3rd interface is connected with described air vent；
Heat exchanger, the first end of described heat exchanger is connected with described second interface；
Shell and tube exchanger, the first end of described shell and tube exchanger is connected with described 4th interface, described shell and tube exchanger
On be formed with heat exchange water inlet and heat exchange outlet；
Throttling arrangement, described throttling arrangement be located at the second end of described heat exchanger and described shell and tube exchanger the second end it
Between；
Hydraulic module, described hydraulic module is formed intake tunnel and exhalant canal, and the first end of described intake tunnel has
The water inlet interface being connected with described heat exchange water inlet and the second end have water inlet, and the first end of described exhalant canal has and institute
Stating the connected water outlet mouthpiece of heat exchange outlet and the second end has outlet, described intake tunnel is provided with water pump.
Heat pump the most according to claim 1, it is characterised in that described hydraulic module and described shell and tube exchanger can
Releasably it is connected.
Heat pump the most according to claim 1 and 2, it is characterised in that along the flow direction of described intake tunnel, described
Water filter, expansion drum and described water pump it is sequentially provided with on intake tunnel.
Heat pump the most according to claim 3, it is characterised in that farther include:
Branch road, the first end of described branch road is connected and between described water filter and described water pump with described intake tunnel,
Wherein said expansion drum is located at the second end of described branch road.
Heat pump the most according to claim 1, it is characterised in that described water inlet interface and described heat exchange water inlet, institute
State and be connected by connecting hose respectively between water outlet mouthpiece with described heat exchange outlet.
Heat pump the most according to claim 1, it is characterised in that described hydraulic module includes isolating casing, Qi Zhongsuo
State intake tunnel and described exhalant canal is located on described isolation casing.
Heat pump the most according to claim 1, it is characterised in that described compressor is scroll compressor.
Heat pump the most according to claim 1, it is characterised in that described heat exchanger is air cooling heat exchanger.
Heat pump the most according to claim 1, it is characterised in that described heat exchanger is finned heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676184.2A CN106247675A (en) | 2016-08-16 | 2016-08-16 | Heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676184.2A CN106247675A (en) | 2016-08-16 | 2016-08-16 | Heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106247675A true CN106247675A (en) | 2016-12-21 |
Family
ID=57591523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610676184.2A Pending CN106247675A (en) | 2016-08-16 | 2016-08-16 | Heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106247675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645744A (en) * | 2019-10-16 | 2020-01-03 | 珠海格力电器股份有限公司 | Hydraulic assembly and air conditioning unit |
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| CN204373270U (en) * | 2014-12-31 | 2015-06-03 | 上海新祁环境科技有限公司 | PV air-conditioner Teat pump boiler |
| CN204574198U (en) * | 2015-01-26 | 2015-08-19 | 佛山欧思丹热能科技有限公司 | A kind of heat pump heating unit with hydraulic module |
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2016
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949613A (en) * | 2010-06-18 | 2011-01-19 | 袁小艳 | Refrigerating-heat pump combined operation system for computer room |
| CN102734982A (en) * | 2011-03-30 | 2012-10-17 | 哈尔滨工大金涛科技股份有限公司 | Direct sewage source heat pump |
| CN202304099U (en) * | 2011-08-17 | 2012-07-04 | 堃霖冷冻机械(上海)有限公司 | Integrated ground source heat pump unit |
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| CN102914077A (en) * | 2012-11-13 | 2013-02-06 | 无锡职业技术学院 | Air-cooled heat pump circulating system and heating and refrigerating methods thereof |
| CN202993655U (en) * | 2012-11-13 | 2013-06-12 | 罗伟强 | Double-supercooling heat pump |
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| CN204373270U (en) * | 2014-12-31 | 2015-06-03 | 上海新祁环境科技有限公司 | PV air-conditioner Teat pump boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645744A (en) * | 2019-10-16 | 2020-01-03 | 珠海格力电器股份有限公司 | Hydraulic assembly and air conditioning unit |
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Application publication date: 20161221 |
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| RJ01 | Rejection of invention patent application after publication |