CN101988594A - Heat pump type air conditioner and four-way shuttle valve thereof - Google Patents
Heat pump type air conditioner and four-way shuttle valve thereof Download PDFInfo
- Publication number
- CN101988594A CN101988594A CN2009101653663A CN200910165366A CN101988594A CN 101988594 A CN101988594 A CN 101988594A CN 2009101653663 A CN2009101653663 A CN 2009101653663A CN 200910165366 A CN200910165366 A CN 200910165366A CN 101988594 A CN101988594 A CN 101988594A
- Authority
- CN
- China
- Prior art keywords
- valve seat
- adapter
- way change
- thermal sleeve
- valve
- 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
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The invention discloses a four-way shuttle valve for a heat pump type air conditioner. The shuttle valve comprises a main valve body, a valve seat fixed in an inner cavity of the main valve body, and a connecting pipe which is fixedly connected with the valve seat and passes through the inner cavity and the outside of the main valve body; and a heat insulating sleeve is arranged between the connecting pipe and the valve seat. The heat insulating sleeve is arranged between the connecting pipe and the valve seat, so the connecting pipe is not directly connected with the valve seat; and the heat insulating sleeve has lower heat conductive efficiency, so the heat transfer between the connecting pipe and the valve seat is remarkably reduced. The heat transfer between the connecting pipe of the heat insulating sleeve and the valve seat is remarkably reduced, so the energy loss between a high-temperature high-pressure medium and a low-temperature low-pressure medium is remarkably reduced, namely the energy loss in the main valve body is remarkably reduced. The invention also discloses the heat pump type air conditioner comprising the four-way shuttle valve; and the energy efficiency ratio of the air conditioner is improved to a certain degree.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of four-way change-over valve that is used for heat pump type air conditioner.In addition, the invention still further relates to a kind of heat pump type air conditioner that comprises above-mentioned four-way change-over valve.
Background technique
Along with the fast development of China's economic construction, market for air-conditioning particularly the demand of high heat transfering efficient air-conditioning increase day by day.
Please refer to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is the structural representation of a kind of typical four-way change-over valve in the prior art; Fig. 2 is the structural representation of a kind of typical main valve in the prior art; Fig. 3 is the structural representation of a kind of typical valve seat in the prior art.
The structure of existing heat pump-type idle call electromagnetic four-way change-over valve comprises electromagnetic coil 11 and main valve 12 as shown in Figure 1.Its structure of brief description and working principle:
Columnar main valve body 121 interior welds have valve seat 122, are welded with four connecting tubes on the main valve body 121, and wherein: D takes over the exhaust end that connects compressor 14, and its inside is always High Temperature High Pressure; S takes over the suction end that connects compressor 14, and its inside is always low-pressure low-temperature; E takes over and connects indoor heat converter 15; C takes over junction chamber outer heat-exchanger 16.
When air-conditioning needs refrigerating operaton, electromagnetic coil 11 outages, the left chamber of main valve 12 is the low-pressure low-temperature district, the right chamber of main valve 12 is the high pressure-temperature district.Form pressure difference between the left and right chamber in the main valve 12 like this.Under this action of pressure, E, S take over and communicate, and D, C take over and communicate.Exhaust end, D adapter, main valve body 121, C adapter, outdoor heat converter 16, indoor heat converter 15, the E that the high-temperature high-pressure medium of internal system flows through compressor 14 successively takes over, S takes over, sucked system's realization refrigeration cycle then by the suction end of compressor 14.
When air-conditioning needs heating operation, electromagnetic coil 11 energisings, the medium in the right chamber of main valve 12 flows into the low-pressure low-temperature district, makes the right chamber of main valve 12 become the low-pressure low-temperature district; And the high pressure-temperature medium of compressor air-discharging end enters the left chamber of main valve 12, and the left chamber of main valve 12 becomes the high pressure-temperature district; Make between the left and right chamber of main valve 12 and just formed a pressure difference.Under this action of pressure, make C adapter, S take over and communicate, D takes over, E takes over and communicates.Exhaust end, D adapter, main valve body 121, E adapter, indoor heat converter 15, outdoor heat converter 16, the C that the high-temperature high-pressure medium of internal system flows through compressor 14 successively takes over, S takes over, the suction end of compressor 14 sucks, and system realizes heating circulation.
As mentioned above, whether switch on by electromagnetic coil 11 and to realize the commutation of main valve 12, and switch the circulating direction of refrigeration working medium by the commutation of main valve 12, make indoor heat converter 15 become the condenser of the state that heats from the vaporizer of refrigerating state, outdoor heat converter 16 has then become the vaporizer of the state that heats from the condenser of refrigerating state, thereby makes heat pump type air conditioner realize the purpose that refrigeration in summer, winter heat.
From the workflow of above-mentioned heat pump type air conditioner, be not difficult to find out, flowing simultaneously in the main valve 12 of four-way change-over valve high-temperature high-pressure medium and low-temp low-pressure medium, each is taken over always the high-temperature high-pressure medium that circulates in the adapter, in addition two circulation low-temp low-pressure media.Heat transfer can take place in high-temperature high-pressure medium and low-temp low-pressure medium, causes the certain energy loss.
How reducing the energy loss of medium, improve the Energy Efficiency Ratio of heat pump type air conditioner, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of four-way change-over valve that is used for heat pump type air conditioner, this four-way change-over valve can effectively reduce the heat transfer between high-temperature high-pressure medium and the low-temp low-pressure medium, reduces the energy loss of medium.Another object of the present invention provides a kind of heat pump type air conditioner that comprises above-mentioned four-way change-over valve, and its working efficiency obviously improves.
For solving the problems of the technologies described above, the invention provides a kind of four-way change-over valve that is used for heat pump type air conditioner, comprise main valve body and the valve seat that is fixedly installed in the inner chamber of described main valve body, and fixedly connected with described valve seat and connect the adapter of described inner chamber and main valve body outside, be provided with thermal sleeve between described adapter and the described valve seat.
Preferably, the upper surface of described thermal sleeve is close to described valve seat, and the lower surface of described thermal sleeve is a little less than the lower surface of described main valve body.
Preferably, described thermal sleeve comprises and coaxial first section of described adapter that this internal diameter of first section equates substantially with the external diameter of described adapter.
Preferably, described thermal sleeve also comprises and is located at described first section top and fixedly connected with it second section; Described second section external diameter equals described first section external diameter substantially, and internal diameter is less than described first section internal diameter.
Preferably, described second section internal diameter equates substantially with the internal diameter of described adapter.
Preferably, described second section lower surface is lower than the lower surface of described main valve body.
Preferably, the number of described adapter is three, and each described adapter and described valve base chamber are equipped with described thermal sleeve.
Preferably, the material of described thermal sleeve is a stainless steel.
Preferably, described thermal sleeve, described adapter and described valve seat adopt the furnace brazing mode to process.
The present invention also provides a kind of heat pump type air conditioner, comprises above-mentioned each described four-way change-over valve.
Four-way change-over valve provided by the present invention comprises main valve body and is fixedly installed in the valve seat of the inner chamber of described main valve body, and the adapter of fixedlying connected with described valve seat.In heat pump type air conditioner refrigeration with heat in the process high-temperature high-pressure medium that circulates in a part was taken over during each was taken over, circulation low-temp low-pressure medium in another part is taken over.Owing between adapter and valve seat, thermal sleeve is set, makes to take over directly not to be connected with described valve seat; And the thermal conductivity of thermal sleeve is lower, so adapter can obvious reduction with the heat of the transmission of valve base chamber.Then having the adapter of thermal sleeve and the heat of valve base chamber transmission can significantly reduce, energy loss between high-temperature high-pressure medium and low-temp low-pressure medium is significantly reduced, be that the interior energy loss of main valve body significantly reduces, thereby can improve the Energy Efficiency Ratio of heat pump type air conditioner to a certain extent.
A kind of preferred embodiment in, the upper surface of described thermal sleeve is close to described valve seat, the lower surface of described thermal sleeve is a little less than the lower surface of described main valve body.Like this, thermal sleeve can separate described adapter and described valve seat from axial direction, and can also separate taking over described main valve body, thereby effectively reduce the heat loss between adapter and main valve body, reduce the heat loss of taking over valve base chamber simultaneously, further improve the effect of heat insulation of four-way change-over valve, improve the Energy Efficiency Ratio of heat pump type air conditioner.
In another preferred embodiment, described thermal sleeve comprises that described thermal sleeve comprises and coaxial first section of described adapter that this internal diameter of first section equates substantially with the external diameter of described adapter.Owing to take over described valve seat bigger in the area of contact of its axial direction, being provided with first section at its axial direction can make the area of taking over valve seat directly contacts significantly reduce, the heat of taking over the valve base chamber transmission is significantly reduced, thereby the energy loss of taking over valve base chamber is significantly reduced.In addition, first section direction of extending with described adapter is identical, is connected all comparatively conveniently with valve seat with adapter, and difficulty of processing is less, helps cutting down finished cost.
Description of drawings
Fig. 1 is the structural representation of a kind of typical four-way change-over valve in the prior art;
Fig. 2 is the structural representation of a kind of typical main valve in the prior art;
Fig. 3 is the structural representation of a kind of typical valve seat in the prior art;
Fig. 4 is the structural representation of first kind of embodiment of main valve of four-way change-over valve provided by the present invention;
Fig. 5 is the partial enlarged drawing of A part among Fig. 4;
Fig. 6 is the structural representation of second kind of embodiment of main valve of four-way change-over valve provided by the present invention;
Fig. 7 is the partial enlarged drawing of B part among Fig. 6;
Fig. 8 is the structural representation of the third embodiment of main valve of four-way change-over valve provided by the present invention;
Fig. 9 is the partial enlarged drawing of C part among Fig. 8.
Embodiment
Core of the present invention provides a kind of four-way change-over valve that is used for heat pump type air conditioner, and this four-way change-over valve can effectively reduce the heat transfer between high-temperature high-pressure medium and the low-temp low-pressure medium, reduces the fluid energy loss.Another core of the present invention provides a kind of heat pump type air conditioner that comprises above-mentioned four-way change-over valve, and its Energy Efficiency Ratio increases to a certain extent.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of first kind of embodiment of main valve of four-way change-over valve provided by the present invention; Fig. 5 is the partial enlarged drawing of A part among Fig. 4.
Four-way change-over valve in the heat pump type air conditioner comprises main valve body 2 and is installed on the valve seat 3 of main valve body 2 inner chambers, and fixedlys connected with valve seat 3 and connects the inner chamber of main valve body 2 and the adapter 4 of outside.In heat pump type air conditioner, take over 4 for one and connect the suction end of indoor heat converter, adapter 4 connection compressors, adapter 4 junction chamber outer heat-exchangers; In addition, four-way change-over valve also has other pipe that connects the compressor air-discharging end.Wherein, indoor heat converter, compressor, outdoor heat converter all do not illustrate in the drawings.
During air conditioner refrigerating, the suction end of indoor heat converter and compressor flows into the low-temp low-pressure medium, circulation high-temperature high-pressure medium in the outdoor heat converter; When air-conditioning heats, the suction end of outdoor heat converter and compressor circulation low-temp low-pressure medium, circulation high-temperature high-pressure medium in the indoor heat converter.Thereby cause respectively taking in 4 of four-way pilot valve, a part is taken over 4 li circulation low-temp low-pressure media, and a part is taken over the high-temperature high-pressure medium that circulates in 4 in addition.
Four-way change-over valve provided by the present invention take over 4 with valve seat 3 between thermal sleeve 5 is set, adapter 4 directly is not connected with valve seat 3; Because the heat transfer efficiency of thermal sleeve 5 is lower, thus take over 4 with the obviously reduction of heat of the transmission of 3 of valve seats.Then being provided with the heat that transmits between the adapter 4 of thermal sleeve 5 and the valve seat 3 can significantly reduce, energy loss between high-temperature high-pressure medium and low-temp low-pressure medium is significantly reduced, be that main valve body 2 interior energy losses significantly reduce, thereby improved the Energy Efficiency Ratio of heat pump type air conditioner.
In a kind of concrete mode of execution, the upper surface of thermal sleeve 5 can be close to valve seat 3.Like this, thermal sleeve 5 can will be taken over 4 at axial direction and separate with valve seat 3, makes to take over 4 and directly be not connected with valve seat 3 at axial direction, reduces to take over 4 heat transfer 3 of axial direction and valve seats, reduces energy loss.
In addition, the lower surface of thermal sleeve 5 can extend between adapter 4 and the main valve body 2 thermal sleeve 5 a little less than the lower surface of main valve body 2.Like this, take over 4 and also directly is not connected, thereby the effective heat loss between reduction adapter 4 and the main valve body 2 further improves effect of heat insulation with 2 of main valve bodies, reduce high-temperature high-pressure medium and the high heat transfer of low-temp low-pressure medium, improve the Energy Efficiency Ratio of heat pump type air conditioner.
Obviously, if the upper surface of thermal sleeve 5 is not adjacent to valve seat 3, perhaps lower surface is not less than the lower surface of main valve body 2, also can realize the fundamental function of thermal sleeve 5, and the heat transfer between adapter 4 and the valve seat 3 is reduced.As long as at valve seat 3 with take over and be provided with the thermal sleeve 5 that low thermal conductivity material is done between 4, just can reduce valve seat 3 and take over 4 energy loss, just can realize purpose of the present invention.
Need to prove that upper surface as herein described means that thermal sleeve 5 was positioned at the surface of the top when valve seat 3 was in position shown in Fig. 4; Correspondingly, lower surface mentioned above means and the corresponding surface of below of thermal sleeve 5 that is positioned at of described upper surface.Four-way change-over valve provided by the present invention can have a plurality of existences in actual use, and its in esse state should not influence protection scope of the present invention.
Particularly, thermal sleeve 5 can comprise and take over 4 coaxial first section 51, and first section 51 internal diameter equates substantially with the external diameter of adapter 4.Like this, thermal sleeve 5 can not only be closely around the outer wall of taking over 4, and its bearing of trend is identical with the bearing of trend of adapter 4.Because adapter 4 is bigger in the area of contact of its axial direction with valve seat 3, being provided with first section 51 at the axial direction of taking over 4 can make adapter 4 significantly reduce with the area that valve seat 3 directly contacts, make take over 4 with valve seat 3 between the heat that transmits significantly reduce, thereby the energy loss of 3 of adapter 4 and valve seats is significantly reduced.And first section 51 with to take over 4 directions of extending identical, and takes over 4 and be connected all comparatively conveniently with valve seat 3, and difficulty of processing is less, helps improving work efficiency, cuts down finished cost.
Please refer to Fig. 6 and Fig. 7, Fig. 6 is the structural representation of second kind of embodiment of main valve of four-way change-over valve provided by the present invention; Fig. 7 is the partial enlarged drawing of B part among Fig. 6.
Effect of heat insulation for further thermal sleeve 5, thermal sleeve 5 provided by the present invention can further include and be located at second section 52 of first section 51 top, and second section 52 external diameter equates substantially with first section 51 external diameter, and second section 52 internal diameter is less than first section 51 internal diameter.Like this, thermal sleeve 5 not only has first section 51 identical with adapter 4 bearing of trends, also have second section 52 vertical with adapter 4 bearing of trends, thereby will take over 4 radially separates with valve seat 3 at it, realize valve seat 3 with take over 4 axially with radially all directly be not connected, further increase heat insulation area, the raising effect of heat insulation, reduce energy loss, improve the Energy Efficiency Ratio of heat pump type air conditioner.
Particularly, second section 52 internal diameter can equate substantially with the internal diameter of taking over 4, guarantees that promptly thermal sleeve 5 is equal with the inwall of taking over 4.Take over 4 top and valve seat 3 thereby can guarantee to isolate for second section 52, can guarantee that again second section 52 existence can not disturb medium in the circulation of taking in 4, make the effect of heat insulation of thermal sleeve 5 better.
Can do to improve further to above-mentioned thermal sleeve 5.
Please refer to Fig. 8 and Fig. 9, Fig. 8 is the structural representation of the third embodiment of main valve of four-way change-over valve provided by the present invention; Fig. 9 is the partial enlarged drawing of C part among Fig. 8.
In a kind of concrete mode of execution, above-mentioned second section 52 lower surface can be lower than the lower surface of main valve body 2, and promptly second section 52 length can be greater than the length of adapter 4 with valve seat 3 joints, and adapter 4 is connected the below of thermal sleeve 5.Thereby make high-temperature high-pressure medium and low-temp low-pressure medium all can pass through thermal sleeve 5 earlier, through taking over 4, further improved effect of heat insulation again, reduced energy loss, more help the working efficiency of four-way change-over valve.
Particularly, the number of the adapter 4 in the four-way change-over valve provided by the present invention is three, and three take over 4 and valve seat 3 between be equipped with thermal sleeve 5.Like this, take over 4 for three and all directly be not connected with valve seat 3, its effect of heat insulation is better, the energy loss between high-temperature high-pressure medium and low-temp low-pressure medium still less, the Energy Efficiency Ratio of heat pump type air conditioner is higher.
Obviously, thermal sleeve 5 is set, also can reduces the energy loss between circulation medium if having only in the four-way change-over valve between one or two adapter 4 and the valve seat 3.But three take over 4 and 3 effect of heat insulation that thermal sleeve 5 all is set of valve seat better, more help improving the Energy Efficiency Ratio of heat pump type air conditioner.
In addition, thermal sleeve 5 can be made of stainless steel.The valve seat 3 of four-way change-over valve and main valve body 2 all are brass generally, and taking over 4 generally is red copper, and heat conductivity is all bigger.And the heat conductivity of stainless steel material is much smaller than copper, and the thermal sleeve 5 that stainless steel material is made is located between adapter 4 and the valve seat 3, can effectively reduce the heat transfer between adapter 4 and the valve seat 3, reduces energy loss.
Obviously, as long as thermal sleeve 5 can stably be fixed in the middle of adapter 4 and the valve seat 3, and the heat conductivity of its Manufacturing material just can satisfy basic demand of the present invention less than the heat conductivity of adapter 4 and valve seat 3.Thermal sleeve 5 provided by the present invention can also adopt the lower material of other heat conductivity.
In a kind of concrete mode of execution, the thermal sleeve 5 in the four-way change-over valve provided by the present invention, adapter 4 and valve seat 3 adopt the furnace brazing modes to process.Furnace brazing is that the weldment that will assemble solder is placed in the stove and heats, and its manufacturing efficiency is higher.Mode one-step shaping with thermal sleeve 5, adapter 4 and valve seat 3 employing furnace brazings helps improving the manufacturing efficiency of four-way change-over valve, and improves its reliability.
Except above-mentioned four-way change-over valve, the present invention also provides a kind of heat pump type air conditioner that comprises above-mentioned four-way change-over valve, and the structure of these other each several parts of heat pump type air conditioner please refer to prior art, and this paper repeats no more.
More than heat pump type air conditioner provided by the present invention and four-way change-over valve thereof are described in detail.Used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. four-way change-over valve that is used for heat pump type air conditioner, comprise main valve body and the valve seat that is fixedly installed in the inner chamber of described main valve body, and fixedly connected with described valve seat and connect the adapter of described inner chamber and main valve body outside, it is characterized in that, be provided with thermal sleeve between described adapter and the described valve seat.
2. four-way change-over valve according to claim 1 is characterized in that the upper surface of described thermal sleeve is close to described valve seat, and the lower surface of described thermal sleeve is a little less than the lower surface of described main valve body.
3. four-way change-over valve according to claim 2 is characterized in that, described thermal sleeve comprises and coaxial first section of described adapter that this internal diameter of first section equates substantially with the external diameter of described adapter.
4. four-way change-over valve according to claim 3 is characterized in that, described thermal sleeve also comprises is located at described first section top and fixedly connected with it second section; Described second section external diameter equals described first section external diameter substantially, and internal diameter is less than described first section internal diameter.
5. four-way change-over valve according to claim 4 is characterized in that, described second section internal diameter equates substantially with the internal diameter of described adapter.
6. four-way change-over valve according to claim 5 is characterized in that, described second section lower surface is lower than the lower surface of described main valve body.
7. according to each described four-way change-over valve of claim 1 to 6, it is characterized in that the number of described adapter is three, be equipped with described thermal sleeve between each described adapter and the described valve seat.
8. according to each described four-way change-over valve of claim 1 to 6, it is characterized in that the material of described thermal sleeve is a stainless steel.
9. four-way change-over valve according to claim 8 is characterized in that, described thermal sleeve, described adapter and described valve seat adopt the furnace brazing mode to process.
10. a heat pump type air conditioner is characterized in that, comprises as each described four-way change-over valve of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101653663A CN101988594A (en) | 2009-08-07 | 2009-08-07 | Heat pump type air conditioner and four-way shuttle valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101653663A CN101988594A (en) | 2009-08-07 | 2009-08-07 | Heat pump type air conditioner and four-way shuttle valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101988594A true CN101988594A (en) | 2011-03-23 |
Family
ID=43745290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101653663A Pending CN101988594A (en) | 2009-08-07 | 2009-08-07 | Heat pump type air conditioner and four-way shuttle valve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101988594A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758936A (en) * | 2012-02-08 | 2012-10-31 | 浙江三花制冷集团有限公司 | Pilot valve of four-way reversing valve and machining method of pilot valve |
| CN102853108A (en) * | 2011-06-29 | 2013-01-02 | 株式会社鹭宫制作所 | Brazing structure body and brazing method of piping components |
| CN106016859A (en) * | 2016-07-18 | 2016-10-12 | 苏州恒兆空调节能科技有限公司 | Thermal insulation type four-way valve for cooling and heating air conditioner |
| CN106225293A (en) * | 2016-08-24 | 2016-12-14 | 常州市武进南夏墅苏南锻造有限公司 | Heat pump type air conditioner |
| CN110081201A (en) * | 2018-01-25 | 2019-08-02 | 株式会社不二工机 | Flow channel switching valve and valve base part for flow channel switching valve |
| WO2022161456A1 (en) * | 2021-02-01 | 2022-08-04 | 浙江三花智能控制股份有限公司 | Electromagnetic directional control valve |
-
2009
- 2009-08-07 CN CN2009101653663A patent/CN101988594A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853108A (en) * | 2011-06-29 | 2013-01-02 | 株式会社鹭宫制作所 | Brazing structure body and brazing method of piping components |
| CN102758936A (en) * | 2012-02-08 | 2012-10-31 | 浙江三花制冷集团有限公司 | Pilot valve of four-way reversing valve and machining method of pilot valve |
| CN106016859A (en) * | 2016-07-18 | 2016-10-12 | 苏州恒兆空调节能科技有限公司 | Thermal insulation type four-way valve for cooling and heating air conditioner |
| CN106016859B (en) * | 2016-07-18 | 2023-02-17 | 苏州恒兆空调节能科技有限公司 | Heat insulation type four-way valve of cooling and heating air conditioner |
| CN106225293A (en) * | 2016-08-24 | 2016-12-14 | 常州市武进南夏墅苏南锻造有限公司 | Heat pump type air conditioner |
| CN110081201A (en) * | 2018-01-25 | 2019-08-02 | 株式会社不二工机 | Flow channel switching valve and valve base part for flow channel switching valve |
| WO2022161456A1 (en) * | 2021-02-01 | 2022-08-04 | 浙江三花智能控制股份有限公司 | Electromagnetic directional control valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101988594A (en) | Heat pump type air conditioner and four-way shuttle valve thereof | |
| JP2009109062A (en) | Refrigerating cycle device using four-way switch valve | |
| CN109990419B (en) | Convection radiation air conditioner terminal and air conditioning system | |
| CN203443182U (en) | Air conditioner | |
| CN201368590Y (en) | Heat pump water heater of a heat exchanger which adopts micro-channels | |
| CN105737635A (en) | Heat exchange device | |
| CN103868281B (en) | A kind of single/double stage compresses switchable tri-generation system of ground-source heat pump | |
| CN106766374B (en) | Jet enthalpy-increasing heat pump system capable of increasing water temperature and defrosting | |
| CN102635986A (en) | Throttling device for air conditioner check valve | |
| CN202040372U (en) | Four-way reserving valve for heat pump water heater | |
| CN101590553A (en) | Heat exchanger of air condition covers copper-aluminum wrapped calandria and U-shaped copper pipe elbow welder and method | |
| CN102853513A (en) | Gas collecting tube component and manufacturing method of gas collecting tube component | |
| CN202835784U (en) | Natural circulation type heat-pump water heater | |
| CN213778366U (en) | Heat-insulation energy-saving high-low temperature all-in-one machine | |
| CN210220296U (en) | Energy-saving device of air source heat pump | |
| CN211876450U (en) | Air source heat pump system | |
| CN102419002A (en) | Equipment combining heat pump water heater and drinking fountain | |
| CN110207428B (en) | Heat exchanger and heat pump system | |
| CN210532732U (en) | Energy storage device based on air-cooled heat pump and heat and cold supply system applying energy storage device | |
| CN209672925U (en) | A kind of novel heat exchange connecting tube | |
| CN220707790U (en) | Air supplementing and enthalpy increasing system of compressor | |
| CN206056009U (en) | A kind of air conditioner and water heater blood circulation | |
| CN204612088U (en) | A kind of wind-cooling vortex total heat recovery air-conditioner set control system | |
| CN201438044U (en) | Multi-temperature direct-thermal heat pump water heater | |
| CN109099754B (en) | Novel heat exchange connecting pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110323 |