CN202747707U - Thermostatic expansion valve for heat-pump-type air conditioner - Google Patents
Thermostatic expansion valve for heat-pump-type air conditioner Download PDFInfo
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- CN202747707U CN202747707U CN 201220306240 CN201220306240U CN202747707U CN 202747707 U CN202747707 U CN 202747707U CN 201220306240 CN201220306240 CN 201220306240 CN 201220306240 U CN201220306240 U CN 201220306240U CN 202747707 U CN202747707 U CN 202747707U
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Abstract
The utility model discloses a thermostatic expansion valve for a heat-pump-type air conditioner. The thermostatic expansion valve for the heat-pump-type air conditioner comprises a valve body, a valve core and a valve rod, wherein the valve core is arranged in the valve body; the valve body is provided with an inlet and an outlet, and is internally provided with a valve cavity which is communicated with the inlet and the outlet and is provided with a throttling port; the valve cavity is also internally provided with a unidirectional valve which is unidirectionally communicated to the inlet from the outlet, and is provided with an installation opening which is axially parallel to the throttling port; the unidirectional valve comprises a unidirectional valve body arranged in the installation opening and a unidirectional valve core which is arranged in the unidirectional valve body and slides up and down along the unidirectional valve body; the bottom of the unidirectional valve body is provided with a lower opening communicated with the outlet; and the middle side wall of the unidirectional valve body is provided with a lateral opening communicated with the inlet. The thermostatic expansion valve for the heat-pump-type air conditioner provided by the utility model is reasonable in design, is simple in structure, can achieve bidirectional throttling in a heat-pump-type air conditioner system, and can achieve the throttling function rapidly after reversing.
Description
Technical field
The utility model relates to the air-conditioning system accessory, particularly a kind of heat pump-type idle call heating power expansion valve.
Background technology
In heat pump type air conditioner system, because traditional heating power expansion valve can only be used for one-way throttle, therefore, usually be in parallel the flow direction of working medium in the realization system with two check valves and two heating power expansion valves.Such system pipeline more complicated, cost is higher.And some is with the heating power expansion valve of check valve, and its complex structure is installed inconveniently, moves not rapidly, and nonreturn valve core is easily stuck, and maintenance cost is higher.
Summary of the invention
Problem to be solved in the utility model just provides a kind of heat pump-type idle call heating power expansion valve, and is reasonable in design, simple in structure, and can realize bidirectional throttle in heat pump type air conditioner system, and can realize fast throttling function after commutation.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: the heat pump-type idle call heating power expansion valve, comprise valve body, be located at spool and valve rod in the valve body, described valve body is provided with import and outlet, be provided with in the valve body and be communicated with import and outlet and with the valve pocket of restriction, spool and restriction cooperate to be attempted by follows valve rod and moves up and down restriction is opened to be communicated with import and outlet or restriction is closed to cut off import and outlet on the valve rod, also be provided with the check valve from the outlet unilaterally connected to import in the described valve pocket, it is characterized in that: be provided with installing port in the described valve pocket, described installing port is parallel with the restriction axis, described check valve comprises the check valve body that is located in the installing port and is located in the check valve body and along the check valve body nonreturn valve core of slippage up and down, the bottom of described check valve body is provided with and exports the under shed that is communicated with, the middle part sidewall of described check valve body is provided with the side opening that is communicated with import, described side opening is rear above nonreturn valve core upwards slides onto side opening to be communicated with under shed and after nonreturn valve core is closed under shed the check valve body inner chamber to be communicated with import, and described nonreturn valve core keeps under shed is closed under forward circulation differential pressure action.The installing port structure is saved the space more so that check valve is installed.
Further, the lower end of described installing port is concordant with the lower end of restriction.Be convenient to processing.
Further, described check valve body comprises for the slipping part of nonreturn valve core slippage and is located at the slipping part lower end and connecting portion that installing port is connected, described under shed is located in the connecting portion, the outer ring surface of described connecting portion is provided with outer bulge loop, described outer bulge loop is sealed and matched with installing port and is connected, the inner ring surface of described connecting portion is provided with the internal projection that the restriction nonreturn valve core moves down the position, and the horizontal level at the place, upper end of described internal projection is higher than the horizontal level at the place, upper end of outer bulge loop.Do not affect the slipping part structure even if connecting portion is connected rear distortion with the installing port installation yet, do not affect the flexibility of valve core movement.
Further, the top of described slipping part is provided with upper shed, and the internal diameter of described upper shed is less than the external diameter of nonreturn valve core.Avoid mineralization pressure chamber between nonreturn valve core and the check valve body top, be convenient to the nonreturn valve core slippage that makes progress.
Further, described side opening is provided with at least two and be distributed on the slipping part equal height position.
After adopting technique scheme, the utlity model has following advantage: one-way valve structures is simple, and production cost and maintenance cost are low, are active in one's movements, and can realize fast afterwards throttling in commutation, and nonreturn valve core can be not stuck.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of the utility model embodiment when forward circulates;
Fig. 2 is the structural representation of the utility model check valve;
Fig. 3 is the structural representation of the utility model embodiment when reverse circulated.
The specific embodiment
A kind of embodiment of the utility model as shown in Figures 1 to 3, the heat pump-type idle call heating power expansion valve, comprise valve body 1, be located at spool 2 and valve rod 3 in the valve body, described valve body is provided with import 11 and outlet 12, be provided with in the valve body and be communicated with import and outlet and with the valve pocket 13 of restriction 131, spool and restriction cooperate to be attempted by follows valve rod and moves up and down restriction is opened to be communicated with import and outlet or restriction is closed to cut off import and outlet on the valve rod, also be provided with the check valve 4 from the outlet unilaterally connected to import in the described valve pocket, be provided with installing port 132 in the described valve pocket, described installing port is parallel with the restriction axis, described check valve comprises the check valve body 41 that is located in the installing port and is located in the check valve body and along the check valve body nonreturn valve core 42 of slippage up and down, the bottom of described check valve body is provided with and exports the under shed 411 that is communicated with, the middle part sidewall of described check valve body is provided with the side opening 412 that is communicated with import, described side opening is rear above nonreturn valve core upwards slides onto side opening to be communicated with under shed and after nonreturn valve core is closed under shed the check valve body inner chamber to be communicated with import, and described nonreturn valve core keeps under shed is closed under forward circulation differential pressure action.Installing port is parallel with the restriction axis so that the motion of nonreturn valve core is parallel with the direction of motion of spool, and installing space is less, more compact structure.
In the present embodiment, the lower end of described installing port is concordant with the lower end of restriction.Described check valve body comprises for the slipping part 413 of nonreturn valve core slippage and is located at the slipping part lower end and connecting portion 414 that installing port is connected, described under shed is located in the connecting portion, the outer ring surface of described connecting portion is provided with outer bulge loop 415, described outer bulge loop is sealed and matched with installing port and is connected, the inner ring surface of described connecting portion is provided with the internal projection 416 that the restriction nonreturn valve core moves down the position, and the horizontal level at the place, upper end of described internal projection is higher than the horizontal level at the place, upper end of outer bulge loop.The top of described slipping part is provided with upper shed 417, and the internal diameter of described upper shed is less than the external diameter of nonreturn valve core.Described side opening is provided with at least two and be distributed on the slipping part equal height position.
The utility model is applied in the cooling and warming dual-purpose heat pump air-conditioning system, the specific works principle is as follows: 1) as shown by the arrows in Figure 1, when fluid flows from import to outlet, the air tank head expanded by heating pushes away valve rod downwards, and when the thrust of air tank head during greater than the elastic force of Compress Spring, valve rod moves down, restriction is opened, fluid from the inlet flow to the outlet, and this moment nonreturn valve core up and down the pressure at two ends equate, under the self gravitation effect, under shed is closed; 2) as shown by the arrows in Figure 3, when fluid from outlet during to inlet flow, air tank head is caught a cold to shrink valve rod is upwards drawn, and the elastic force of Compress Spring upwards pushes away valve rod simultaneously, so valve rod moves up, restriction is closed, and the fluid pressure in exit is greater than the fluid pressure of import department at this moment, and nonreturn valve core moves up under the pressure differential effect of these two fluid pressures, and under shed is communicated with side opening, thereby outlet is communicated with import, and fluid flow to import from outlet.In commutation process, because check valve body is provided with side opening and upper shed, when moving up, nonreturn valve core can not make nonreturn valve core stuck rapidly with the fluid expulsion in the check valve body inner chamber, realize fast commutation.
Except above preferred embodiment, the utility model also has other embodiment, those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from spirit of the present utility model, all should belong to the defined scope of the utility model claims.
Claims (5)
1. heat pump-type idle call heating power expansion valve, comprise valve body (1), be located at spool (2) and valve rod (3) in the valve body, described valve body is provided with import (11) and outlet (12), be provided with in the valve body and be communicated with import and outlet and with the valve pocket (13) of restriction (131), spool and restriction cooperate to be attempted by follows valve rod and moves up and down restriction is opened to be communicated with import and outlet or restriction is closed to cut off import and outlet on the valve rod, also be provided with the check valve (4) from the outlet unilaterally connected to import in the described valve pocket, it is characterized in that:
Be provided with installing port (132) in the described valve pocket, described installing port is parallel with the restriction axis, described check valve comprises the check valve body (41) that is located in the installing port and is located in the check valve body and along the check valve body nonreturn valve core (42) of slippage up and down, the bottom of described check valve body is provided with and exports the under shed (411) that is communicated with, the middle part sidewall of described check valve body is provided with the side opening (412) that is communicated with import, described side opening is rear above nonreturn valve core upwards slides onto side opening to be communicated with under shed and after nonreturn valve core is closed under shed the check valve body inner chamber to be communicated with import, and described nonreturn valve core keeps under shed is closed under forward circulation differential pressure action.
2. heat pump-type idle call heating power expansion valve according to claim 1, it is characterized in that: the lower end of described installing port is concordant with the lower end of restriction.
3. heat pump-type idle call heating power expansion valve according to claim 1 and 2, it is characterized in that: described check valve body comprises for the slipping part (413) of nonreturn valve core slippage and is located at the slipping part lower end and connecting portion (414) that installing port is connected, described under shed is located in the connecting portion, the outer ring surface of described connecting portion is provided with outer bulge loop (415), described outer bulge loop is sealed and matched with installing port and is connected, the inner ring surface of described connecting portion is provided with the internal projection (416) that the restriction nonreturn valve core moves down the position, and the horizontal level at the place, upper end of described internal projection is higher than the horizontal level at the place, upper end of outer bulge loop.
4. heat pump-type idle call heating power expansion valve according to claim 3, it is characterized in that: the top of described slipping part is provided with upper shed (417), and the internal diameter of described upper shed is less than the external diameter of nonreturn valve core.
5. heat pump-type idle call heating power expansion valve according to claim 3 is characterized in that: described side opening is provided with at least two and be distributed on the slipping part equal height position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220306240 CN202747707U (en) | 2012-06-27 | 2012-06-27 | Thermostatic expansion valve for heat-pump-type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220306240 CN202747707U (en) | 2012-06-27 | 2012-06-27 | Thermostatic expansion valve for heat-pump-type air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202747707U true CN202747707U (en) | 2013-02-20 |
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ID=47707087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220306240 Expired - Lifetime CN202747707U (en) | 2012-06-27 | 2012-06-27 | Thermostatic expansion valve for heat-pump-type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202747707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180566A (en) * | 2013-05-21 | 2014-12-03 | 浙江三花股份有限公司 | Thermal expansion valve with functions of one-way valve |
-
2012
- 2012-06-27 CN CN 201220306240 patent/CN202747707U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180566A (en) * | 2013-05-21 | 2014-12-03 | 浙江三花股份有限公司 | Thermal expansion valve with functions of one-way valve |
| CN104180566B (en) * | 2013-05-21 | 2018-06-19 | 浙江三花制冷集团有限公司 | A kind of heating power expansion valve with non-return valve function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |
|
| CX01 | Expiry of patent term |