CN101886718A - Two-way thermal expansion valve - Google Patents
Two-way thermal expansion valve Download PDFInfo
- Publication number
- CN101886718A CN101886718A CN2009102030250A CN200910203025A CN101886718A CN 101886718 A CN101886718 A CN 101886718A CN 2009102030250 A CN2009102030250 A CN 2009102030250A CN 200910203025 A CN200910203025 A CN 200910203025A CN 101886718 A CN101886718 A CN 101886718A
- Authority
- CN
- China
- Prior art keywords
- throttling
- chamber
- expansion valve
- adjusting portion
- reverse
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 230000008447 perception Effects 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 abstract description 28
- 239000003507 refrigerant Substances 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 16
- 238000004378 air conditioning Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Landscapes
- Multiple-Way Valves (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention relates to a two-way thermal expansion valve, which belongs to the technical field of refrigeration control and solves the problems that refrigerants of forward and reverse circulation are throttled by using the same throttle adjusting part and the system design cannot be optimized according to the specificity of a refrigerating or heating stage. The two-way thermal expansion valve comprises a valve body provided with a first chamber and a second chamber, a forward throttle connecting cavity and a reverse throttle connecting cavity communicated with the first cavity, a valve core placed in the first chamber, a temperature sensing component for sensing temperature change in the second chamber, and a transmission bar for connecting the valve core and the temperature sensing component. The two-way thermal expansion valve is characterized in that the valve core is provided with a forward throttle adjusting part and a reverse throttle adjusting part. The refrigerants of forward and reverse circulation are adjusted by the independent throttle adjusting parts so as to fulfill the purposes of improving the energy consumption rate and prolonging the service life of equipment.
Description
Technical field
The invention belongs to refrigeration control technique field, be particularly suitable for vapor compression heat pump systems (as air-conditioning system) etc.Be specifically related to a kind of two-way heating power expansion valve structure.
Background technique
Expansion valve as throttling arrangement is widely used in the loop of refrigeration system, by the temperature/pressure of perception special position refrigeration agent, controls the size of refrigerant flow.As the patent No. is that 200520013860.5 Chinese patent discloses a kind of two-way heating power expansion valve structure as shown in Figure 6.This structure comprise offer first chamber 11 ' and second chamber 12 ' valve body 1 ', first chamber 11 ' in be provided with as spool 2 ' steel ball, valve body 1 ' an end be fixed with air tank head 200 as temperature sensing part, air tank head 200 is by gas tank seat 201, driver blade 202, diaphragm 203, gas tank lid 204 is welded to form, be filled with refrigeration agent 205 in the Seal cage between diaphragm 203 gentle case lids 204, when second chamber 12 ' in refrigerant temperature/variation in pressure the time, the pressure of the refrigeration agent 205 in the Seal cage will change, this variation impels diaphragm 203 to promote the variation that driver blade 202 produces displacement, again with this variation by drive link 7 ' move be delivered to spool 2 ', the size of control valve aperture reaches the refrigerant flow effect of adjusting throttling passage.
Such throttling design, no matter be throttling forward or backwards (heating or cooling condition), all be as the throttling adjusting portion relatively and regulate the flow of refrigeration agent between the restriction change in displacement by the steel ball cambered surface of spool, when second chamber 12 ' under specific pressure and temperature, amount of restriction all is certain.And the running environment more complicated in the refrigeration system in fact, consider the reasons such as working life of energy-conservation, optimum efficiency and equipment, freezing and heating in the different operating environment, at specific temperature/pressure parameter, throttling to refrigeration system changes the requirement difference, use same throttling adjusting portion to carry out forward and oppositely throttling in the prior art, can't reach such purpose.
So the improvement expansion valve device, make refrigeration with heat different refrigerant cycle, according to system's needs, independently throttling adjusting portion is set separately controls amount of restriction, obtain best restriction effect, be that those skilled in the art makes great efforts the problem of capturing always.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is a kind of new two-way expansion valve mechanism of design, in the working environment that freezes and heat, the refrigeration agent of forward circulation and the refrigeration agent of recycled back are regulated through independently throttling adjusting portion, make the system optimization design, reaching raising can loss-rate and the purpose that prolongs service life of equipment.
For this reason, the present invention proposes a kind of two-way heating power expansion valve structure, the forward throttling connection chamber that comprises the valve body that offers first chamber and second chamber, is communicated with described first chamber and oppositely the throttling connection chamber, place temperature variation in described second chamber of spool, perception in described first chamber temperature sensing part, be connected the drive link of described spool and described temperature sensing part, it is characterized in that described spool is provided with independently forward throttling adjusting portion and oppositely throttling adjusting portion.
As the two-way heating power expansion valve of above-mentioned structure, also be provided with the connecting path that forward throttling adjusting portion and reverse throttling adjusting portion are communicated with first chamber on the described spool.
Further, be provided with sealed member in the forward throttling adjusting portion of described spool and the peripheral part between the reverse throttling adjusting portion.
Further, described spool is nonmetal plastics or stupalith.
Further, the forward throttling adjusting portion of described spool and the oppositely separate setting of throttling adjusting portion.
Further, described forward throttling adjusting portion and reverse throttling adjusting portion are ring shaped slot, and preferably, the axial cross section of its ring shaped slot is square type or trapezoidal-structure.
As the two-way heating power expansion valve of above-mentioned structure, between described first chamber and forward throttling connection chamber, be provided with forward throttling prepass and reverse passage after the throttling; At described first chamber and oppositely between the throttling connection chamber, be provided with passage after reverse throttling prepass and the forward throttling.
Further, in described forward throttling connection chamber and reverse throttling connection chamber, be provided with one-way valve.
Thermal expansion valve arrangement of the present invention, owing to be provided with two independently forward throttling adjusting portion and reverse throttling adjusting portions, make refrigeration with heat different refrigerant cycle, obtain different throttlings and change and satisfy system optimization design, reaching raising can loss-rate and prolong the purpose of service life of equipment.
Description of drawings
Figure 1A/1B: one of preference that the present invention provides just/structure under the recycled back stream;
Fig. 2: the schematic representation of the valve core structure among above-mentioned Figure 1A/1B in the preference;
Fig. 3: the schematic representation of the one-way valve structures among above-mentioned Figure 1A/1B in the preference;
Fig. 4: two structural representation of the preference that the present invention provides;
Fig. 5 A/5B: the schematic representation of two kinds of preferred valve core structures of conduct in addition that the present invention provides;
Fig. 6: the heating power expansion valve exemplary block diagram of prior art;
Fig. 7: the typical case that two-way heating power expansion valve the is applied to air-conditioning refrigeration system flow circuit diagram that freezes.
Symbol description among the figure:
1/1 '-valve body;
2/2A/2B/2 '-spool;
The 3-temperature sensing part;
4/4 '-drive link;
The 5-one-way valve;
The 6/7/8/9-connecting tube;
The 10-returning spring;
11/11 '-the first chamber, 12/12 '-the second chamber;
13-forward throttling connection chamber, the reverse throttling connection chamber of 14-;
The 15-elastic member;
The 17-aperture;
18-inner circle wall, 21/21A/21B-peripheral part;
22-forward throttling adjusting portion, the reverse throttling adjusting portion of 23-;
The 24/24A/24B/25/25A/25B-through hole;
The 26/26A/26B-axial bore;
51-tapering, 54-groove, 52-dividing plate, 53-end;
55-cylindrical portion, 56-inner circular part; The 131/141-tapering;
The ring-like cutting of 61/71-, 62/72-locking plate;
Passage after 134-forward throttling prepass, the throttling of 143-forward;
Passage after the reverse throttling prepass of 144-, the reverse throttling of 133-;
200-air tank head, 201-gas tank seat, 202-driver blade;
203-diaphragm, 204-gas tank lid, 205-refrigeration agent;
The 100-two-way heating power expansion valve;
101-compressor, 102-solenoid directional control valve;
103-first heat exchanger, 104-second heat exchanger;
Embodiment
Two-way heating power expansion valve of the present invention is fit to be applied to refrigeration system, because the principle of refrigeration system is basic identical, so following air-conditioning system with a kind of heat pump type is that example describes.
The typical case that Fig. 7 is applied to a kind of refrigeration system of heat pump air conditioner for the two-way heating power expansion valve flow circuit diagram that freezes.In refrigeration system, mainly comprise in the refrigerant flow path: compressor 101, solenoid directional control valve 102, two-way heating power expansion valve 100, first heat exchanger 103 (as outdoor heat converter), second heat exchanger 104 (as indoor heat converter).
When air conditioner refrigerating moves, switch 102 by solenoid directional control valve, the refrigeration agent circulation path is: second chamber 12 of first chamber 11 ' → the second heat exchanger 104 (the indoor heat converter) → solenoid directional control valve 102 → heating power expansion valve 100 of pressurized gas → selector valve 102 → the first heat exchanger 103 (outdoor heat converter) → heating power expansion valves 100 that compressor 101 is discharged ' → compressor 101 suctions; When the air-conditioning heating operation, switch by solenoid directional control valve 102, the refrigeration agent circulation path is: second chamber 12 of first chamber 11 ' → the first heat exchanger 103 (the outdoor heat converter) → solenoid directional control valve 102 → heating power expansion valve 100 of pressurized gas → selector valve 102 → the second heat exchanger 104 (indoor heat converter) → heating power expansion valves 100 that compressor 101 is discharged ' → compressor 101 suctions.By the throttling passage two-way working of heating power expansion valve, the purpose of the dual-use that makes air-conditioning realize freezing summer to heat winter.
Figure 1A/1B is respectively one of the preference that the present invention the provides structural representation under forward and recycled back stream, and Fig. 2 is the schematic representation of valve core structure in the above-mentioned preference, and Fig. 3 is the schematic representation of one-way valve structures in the above-mentioned preference.
Shown in Figure 1A/1B.The valve body 1 of two-way heating power expansion valve 100 is roughly column structure, and the cylindrical chamber that offers from two ends up and down at axial direction is communicated with by aperture 17 as first chamber 11 and second chamber 12, first chamber 11 and second chamber 12 respectively.Forward throttling connection chamber 13 and oppositely throttling connection chamber 14 be arranged on the both lateral sides of first chamber 11, between forward throttling connection chamber 13 and first chamber 11 by being communicated with as the less hole of forward throttling prepass 134 with as the bigger hole of passage 133 after the reverse throttling; Equally, oppositely between throttling connection chamber 14 and first chamber 11 by being communicated with as the less hole of reverse throttling prepass 144 with as the bigger hole of passage 143 after the forward throttling.In second chamber 12 of valve body 1, be provided with temperature sensing part 3, in first chamber 11 of valve body 1, be provided with spool 2, drive link 4 penetrates aperture 17, the returning spring 10 that is provided with in first chamber 11 makes spool 2 by drive link 4 butt temperature sensing part 3, connecting tube 8 with 9 respectively with airtight connection of two ends, the left and right sides of second chamber 12, connecting tube 6 with 7 respectively with forward throttling connection chamber 13 and reverse 14 airtight connections of throttling connection chamber, on the tube wall of connecting tube 6 and connecting tube 7, be processed with ring- like cutting 61 and 71 respectively.
As shown in Figure 2.Spool 2 is the cardinal principle cylindrical-shaped structure, the diameter dimension of the inner circle wall 18 of the diameter dimension of its peripheral part 21 and first chamber 11 is suitable, so that spool 2 endwisely slips in first chamber 11, first chamber 11 is separated into two chambers up and down, for quality of fit between the inner circle wall 18 of the peripheral part 21 that improves spool 2 and first chamber 11 to keep the seal of isolation, simultaneously also for improving the wear resistance of spool 2, spool 2 preferably uses nonmetal plastic materials or stupalith processing, can certainly use nonmetal plastic materials or the stupalith compound body spool as embedded structure.
Axially distribute up and down circumferentially being provided with of spool 2 two ring shaped slots independently, respectively as the forward throttling adjusting portion 22 of spool 2 and reverse throttling adjusting portion 23, in the present embodiment, the ring shaped slot of lower position is circumferential enclosed trapezoidal-structure, above the ring shaped slot of position be circumferential semienclosed trapezoidal-structure.The lateral direction penetrating hole 24,25 of setting and vertical hole 26 common connecting paths of forming are communicated with forward throttling adjusting portion 22 and reverse throttling adjusting portion 23 on the spool 2 with first chamber 11.
As shown in Figure 3.One-way valve 5 is roughly the cylindrical structure that has tapering 51, the lateral cross section of its cylinder is designed to " concavo-convex alternating structure ", four groove 54 and four protruding dividing plates that have cylindrical portion 55 52 that have inner circular part 56 that " concavo-convex alternating structure " in the present embodiment is embodied as circumferential distribution constitute, greater than the minimum diameter dimension D 2 of ring-like cutting 61/71, one-way valve can slide in connecting tube and be stopped by ring-like cutting the diameter dimension D of its one-way valve 5 cylindrical portions 55 like this less than the internal diameter size D1 of connecting tube 6/7; The diameter dimension d of the inner circular part 56 of its one-way valve 5 is less than the minimum diameter dimension D 2 of ring-like cutting 61/71 and greater than the aperture size of passage 143 after the passage 133/ forward throttling after the reverse throttling, can realize after the reverse throttling of unidirectional control the function of passage 143 after the passage 133/ forward throttling like this.
Shown in Figure 1A, when the system refrigerant forward circulation flows (as cooling condition), refrigeration agent enters from the forward throttling connection chamber 13 of two-way heating power expansion valve 100, be subjected to fluid pressure action, one-way valve 5 in connection chamber 13 is pushed to the inboard of forward throttling connection chamber 13, the tapering 51 that makes one-way valve 5 contacts with tapering 131 in the forward throttling connection chamber of valve body 1 13, because the diameter dimension d of the inner circular part 56 of one-way valve 5 is greater than the aperture size of passage 133 after the reverse throttling, can close passage 133 after the reverse throttling, refrigeration agent arrives forward throttling adjusting portion 22 by forward throttling prepass 134,25--axial bore 26--lateral direction penetrating hole, lateral direction penetrating hole 24 from spool 2, enter passage 143 after the forward throttling, promote to move the ring-like cutting 71 of butt behind the one-way valve 5 in the connecting tube 7, because the diameter dimension d of the inner circular part 56 of one-way valve 5 is less than the minimum diameter dimension D 2 of ring-like cutting 71, its refrigeration agent flows out two-way heating power expansion valve 100 thus.
In system's running, be arranged on the variation of temperature sensing part 3 sense temperature in second chamber 12, promote spool 2 by drive link 4 and move, make forward throttling adjusting portion 22 and 134 relative displacements of forward throttling prepass on the spool 2, form the size of the restriction control flow rate of size variation.
Shown in Figure 1B, when the system refrigerant recycled back flows (as heating condition), refrigeration agent enters from the reverse throttling connection chamber 14 of two-way heating power expansion valve 100, be subjected to fluid pressure action, one-way valve 5 in connection chamber 14 is pushed to the inboard of reverse throttling connection chamber 14, the tapering 51 that makes one-way valve 5 contacts with tapering 141 in the reverse throttling connection chamber of valve body 1 14, since the diameter dimension d of the inner circular part 56 of one-way valve 5 greater than the forward throttling after the aperture size of passage 143, can close passage 143 after the forward throttling, refrigeration agent arrives reverse throttling adjusting portion 23 by reverse throttling prepass 144, lateral direction penetrating hole 24--axial bore 26 from spool 2, enter passage 133 after the reverse throttling, promote to move the ring-like cutting 61 of butt behind the one-way valve 5 in the connecting tube 7, because the diameter dimension d of the inner circular part 56 of one-way valve 5 is less than the minimum diameter dimension D 2 of ring-like cutting 61, its refrigeration agent flows out two-way heating power expansion valve 100 thus.In system's running, be arranged on the variation of temperature sensing part 3 sense temperature in second chamber 12, promote spool 2 by drive link 4 and move, make reverse throttling adjusting portion 23 and oppositely throttling prepass 144 relative displacements on the spool 2, form the size of the restriction control flow rate of size variation.
Two structural representation of the preference that Fig. 4 provides for the present invention, different with the foregoing description is, in forward throttling connection chamber 13 and reverse throttling connection chamber 14, be respectively arranged with locking plate 62/72, connecting tube 6/7 butt locking plate 62/72 airtight being welded on the valve body.Ring-like cutting 61/71 role in its locking plate 62/72 and the foregoing description one is identical with the effect that reaches, and does not repeat them here.
The schematic representation of two kinds of preferred valve core structures of conduct in addition that Fig. 5 A/5B provides for the present invention.In Fig. 5 A, different with first embodiment is, peripheral part 21A between the forward throttling adjusting portion 22A of described spool 2A and the reverse throttling adjusting portion 23A is provided with " 0 " type circle as sealed member 15, the flow of refrigerant of avoiding the glade plane space between the inner circle wall 18 of the peripheral part 21A of spool 2A and first chamber 11 like this and producing, can also increase again at the peripheral part of the lower end of the forward throttling adjusting portion 22A of spool 2A certainly establish reset type circle as sealed member to isolate refrigeration agent.
In Fig. 5 B, different with first embodiment is, is enclosed square type structure at two ring shaped slot axial cross sections that axially distribute up and down of the circumferential setting of spool 2B; Can certainly be designed to ring shaped slot and the ring-like flume structure that axial cross section is a ladder type that an axial cross section is a square type structure; Certainly the axial cross section of ring shaped slot also can extend semi-circular on the basis of said structure or the trigonometric form structure, can both realize technological improvement of the present invention, does not repeat them here.
Below only be for setting forth the preferred implementation that technological scheme of the present invention exemplifies; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, all these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. two-way heating power expansion valve, the forward throttling connection chamber (13) that comprises the valve body (1) that offers first chamber (11) and second chamber (12), is communicated with described first chamber (11) and oppositely throttling connection chamber (14), place the interior temperature variation of described second chamber of spool (2), perception (12) in described first chamber (11) temperature sensing part (3), be connected the drive link (4) of described spool (2) and described temperature sensing part (3), it is characterized in that described spool (2) is provided with forward throttling adjusting portion (22) and reverse throttling adjusting portion (23).
2. two-way heating power expansion valve as claimed in claim 1 is characterized in that, described spool (2) is provided with forward throttling adjusting portion (22) and the reverse connecting path that is communicated with first chamber (11) of throttling adjusting portion (23).
3. two-way heating power expansion valve as claimed in claim 2 is characterized in that, is provided with sealed member (15) in the forward throttling adjusting portion (22) of described spool (2) and the peripheral part (21) between the reverse throttling adjusting portion (23).
4. two-way heating power expansion valve as claimed in claim 2 is characterized in that, described spool (2) is nonmetal plastics or stupalith.
5. two-way heating power expansion valve as claimed in claim 2 is characterized in that, the forward throttling adjusting portion (22) of described spool (2) and the oppositely separate setting of throttling adjusting portion (23).
6. as the described arbitrary two-way heating power expansion valve of claim 1-5, it is characterized in that described forward throttling adjusting portion (22) and reverse throttling adjusting portion (23) are ring shaped slot.
7. two-way heating power expansion valve as claimed in claim 6 is characterized in that, described as forward throttling adjusting portion (22) or oppositely the axial cross section of the ring shaped slot of throttling adjusting portion (23) be square type or trapezoidal-structure.
8. as the described arbitrary two-way heating power expansion valve of claim 1-5, it is characterized in that, between described first chamber (11) and forward throttling connection chamber (13), be provided with forward throttling prepass (134) and reverse passage (133) after the throttling.
9. as the described arbitrary two-way heating power expansion valve of claim 1-5, it is characterized in that,, be provided with passage (143) after reverse throttling prepass (144) and the forward throttling at described first chamber (11) and oppositely between the throttling connection chamber (14).
10. as the described arbitrary two-way heating power expansion valve of claim 1-5, it is characterized in that, be provided with one-way valve (5) in described forward throttling connection chamber (13) and the reverse throttling connection chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102030250A CN101886718B (en) | 2009-05-13 | 2009-05-13 | Two-way thermal expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102030250A CN101886718B (en) | 2009-05-13 | 2009-05-13 | Two-way thermal expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886718A true CN101886718A (en) | 2010-11-17 |
| CN101886718B CN101886718B (en) | 2012-07-25 |
Family
ID=43072748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102030250A Active CN101886718B (en) | 2009-05-13 | 2009-05-13 | Two-way thermal expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101886718B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374712A (en) * | 2011-11-28 | 2012-03-14 | 宁波奥克斯空调有限公司 | Throttling device for air conditioner refrigerating system |
| CN103245142A (en) * | 2013-05-29 | 2013-08-14 | 上海交通大学 | Expansion valve having two-way valve functions |
| CN104121375A (en) * | 2013-04-27 | 2014-10-29 | 王钦廉 | Bidirectional thermal expansion valve |
| CN104879967A (en) * | 2014-02-28 | 2015-09-02 | 昆山灵科环保科技有限公司 | Two-way electronic expansion valve |
| CN104948793A (en) * | 2014-03-31 | 2015-09-30 | 杭州三花研究院有限公司 | Throttling device |
| CN105402438A (en) * | 2014-09-12 | 2016-03-16 | 浙江三花汽车零部件有限公司 | Thermal expansion valve and manufacturing method thereof |
-
2009
- 2009-05-13 CN CN2009102030250A patent/CN101886718B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374712A (en) * | 2011-11-28 | 2012-03-14 | 宁波奥克斯空调有限公司 | Throttling device for air conditioner refrigerating system |
| CN104121375A (en) * | 2013-04-27 | 2014-10-29 | 王钦廉 | Bidirectional thermal expansion valve |
| CN104121375B (en) * | 2013-04-27 | 2017-06-06 | 王钦廉 | A kind of two-way heating power expansion valve |
| CN103245142A (en) * | 2013-05-29 | 2013-08-14 | 上海交通大学 | Expansion valve having two-way valve functions |
| CN103245142B (en) * | 2013-05-29 | 2015-05-27 | 上海交通大学 | Expansion valve having two-way valve functions |
| CN104879967A (en) * | 2014-02-28 | 2015-09-02 | 昆山灵科环保科技有限公司 | Two-way electronic expansion valve |
| CN104879967B (en) * | 2014-02-28 | 2017-04-12 | 昆山灵科环保科技有限公司 | Two-way electronic expansion valve |
| CN104948793A (en) * | 2014-03-31 | 2015-09-30 | 杭州三花研究院有限公司 | Throttling device |
| CN105402438A (en) * | 2014-09-12 | 2016-03-16 | 浙江三花汽车零部件有限公司 | Thermal expansion valve and manufacturing method thereof |
| CN105402438B (en) * | 2014-09-12 | 2019-05-31 | 浙江三花汽车零部件有限公司 | Heating power expansion valve and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101886718B (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101886718B (en) | Two-way thermal expansion valve | |
| CN108253157B (en) | Expansion switch valve | |
| WO2016192146A1 (en) | Six-way reversing valve, and air-conditioning outdoor unit, and air conditioner having same | |
| KR101126711B1 (en) | 4-Way Valve for Air Conditioner having Heating and Cooling Function using Duplex Spool Valve | |
| CN109838583A (en) | Four-way reversing valve | |
| CN103291957A (en) | Main valve of four-way reversing valve and four-way reversing valve provided with main valve | |
| JP5663330B2 (en) | Four-way selector valve | |
| CN201540000U (en) | Liquid storage device component and heat pump refrigerating machine with same | |
| CN203223514U (en) | Outer-circulation type oil damper | |
| US20170191680A1 (en) | Air-conditioning outdoor unit and air conditioner | |
| CN112664665B (en) | High temperature resistant type self-cleaning high temperature butterfly valve | |
| CN113654035B (en) | Automatic control system and method for temperature and pressure reduction of regional cooling and heating steam | |
| CN202580123U (en) | Four-way valve for R32 refrigerant and air conditioner | |
| JP5144374B2 (en) | Four-way switching valve disc | |
| CN101762128B (en) | Thermal expansion valve | |
| EP2908062B1 (en) | Outdoor Unit of Air Conditioner | |
| CN201241963Y (en) | Main valve structure of electromagnetic valve | |
| CN103245142B (en) | Expansion valve having two-way valve functions | |
| CN101988585A (en) | Thermal expansion valve | |
| CN211009352U (en) | Hydraulic oil cylinder | |
| US10132417B2 (en) | Six-way directional valve | |
| CN217004992U (en) | Expansion valve with balanced internal pressure | |
| CN219317691U (en) | Valve core structure of hydraulic valve | |
| CN206439192U (en) | The air compressor machine of valve is maintained with pretension adjustable pressure | |
| CN108119437A (en) | The industrial constant-temperature device of hydraulic pressure bypass with adjustable relief valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170302 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Liquan village of Zhejiang County in Xinchang Province town under Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20231030 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: Xia Li Quan, Chengguan Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |