CN205978641U

CN205978641U - Expansion switch valve

Info

Publication number: CN205978641U
Application number: CN201620419014.1U
Authority: CN
Inventors: 黄健; 陈雪峰; 叶梅娇
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2016-05-10
Filing date: 2016-05-10
Publication date: 2017-02-22
Anticipated expiration: 2026-05-10

Abstract

The utility model discloses an expansion switch valve, including valve body (500), be formed with import (501), export (502) and intercommunication on this valve body and be in the import with inside runner between the export, install on the inside runner first case (503) and second case (504), first case (503) make the import with the export is intercommunication or disconnection intercommunication directly, second case (504) make the import with the export is through throttle mouthful (505) intercommunication or disconnection intercommunication. Like this, through first case of the integrated installation and second case on the inside runner of same valve body, can realize the on -off control of cryogen and/or the bulge control function of throttling, simple structure, easily production and installation, and work as the utility model provides a when expansion switch valve is applied to heat pump system, can simplify tube coupling reduce cost to the refrigerant that reduces whole heat pump system fills the fluence, the compressor oil return of being convenient for.

Description

Expand switch valve

Technical field

This utility model is related to control valve field, in particular it relates to a kind of expand switch valve.

Background technology

Sometimes for control cold-producing medium reducing pressure by regulating flow or only by not throttling in heat pump, and existing electronic expansion Valve can only control cold-producing medium throttling or not pass through.For meeting this demand of heat pump, it is swollen that prior art will use electronics Swollen valve and the structure of electromagnetic switch valve parallel connection.This structure needs to use two three way cock, six roots of sensation pipeline, and structure is more multiple Miscellaneous, it is not easy to install.Work as closed electromagnetic valve, during using electric expansion valve, electric expansion valve import is the liquid system of middle temperature high pressure Cryogen, electronic expansion valve outlet port is the liquid refrigerant of low-temp low-pressure, because pipeline is connection, so the import and export of electromagnetic valve Also consistent with the refrigerant condition of electric expansion valve import and export respectively, the refrigerant pressure temperature that electromagnetic valve is imported and exported is different, Easily the internal structure of electromagnetic valve is caused to damage.The cold-producing medium of whole heat pump further, since pipeline is relatively more, can be improved Charging amount, improves cost.When heat pump works at low temperature, compressor oil return can be relatively difficult, and this complicated structure is also The oil return of heat pump can be unfavorable for.

Utility model content

The purpose of this utility model be provide a kind of expand switch valve, this expansion switch valve is capable of to flowing through medium Break-make controls and throttling controls two kinds of functions, and structure is simple.

To achieve these goals, this utility model provides a kind of expansion switch valve, including valve body, wherein, on this valve body It is formed with import, the outlet and connection inner flow passage between described import and described outlet, described inner flow passage is installed There are the first valve element and the second valve element, described first valve element makes described import directly connect or disconnect connection, institute with described outlet State the second valve element so that described import is connected by restriction with described outlet or disconnects connection.

Alternatively, described inner flow passage includes first flow and the second flow channel with described inlet communication respectively, and described The first valve port with described first valve element cooperation is formed with one runner, described restriction is formed in described second flow channel with shape Become the second valve port with described second valve element cooperation, described first flow and described second flow channel are intersected in described second valve port Downstream and with described outlet.

Alternatively, described second flow channel and described outlet open up in the same direction, and described first flow is formed as and described second The orthogonal first through hole in road, described import is by being opened in the second through hole and described second on the wall of described second flow channel side Flow passage, described first through hole and described second through hole are respectively communicated with described import.

Alternatively, described import and described outlet are opened on described valve body mutual vertically.

Alternatively, described first valve element is laid along moving direction is coaxial with described first valve port selectively to block or to take off From described first valve port.

Alternatively, described second valve element is laid along moving direction is coaxial with described second valve port selectively to block or to take off From described second valve port.

Alternatively, described first valve element includes the first valve rod and be connected to the first plug of this first valve stem end, and this One plug is used for being sealed against on the end face of described first valve port to block described first flow.

Alternatively, described second valve element includes the second valve rod, and the end of this second valve rod is formed as taper header structure, described Second valve port is formed as the taper pore structure matching with this taper header structure.

Alternatively, described valve body includes forming described inner flow passage valve seat and the first valve casing being arranged on this valve seat and Second valve casing, is provided with the first electromagnetic drive part for driving described first valve element, described second valve in described first valve casing The second electromagnetic drive part for driving described second valve element is installed in shell, described first valve element extends from described first valve casing Described inner flow passage to described valve seat, described second valve element extends to described interior in described valve seat from described second valve casing Portion's runner.

Alternatively, described valve seat is formed as polyhedral structure, described first valve casing, described second valve casing, described import and Described outlet is separately positioned on the different surfaces of this polyhedral structure, wherein, described first valve casing and described second valve casing Installation direction is mutually perpendicular to, and the opening direction of described import and described outlet is mutually perpendicular to.

By technique scheme, by the first valve element and the second valve element, energy are installed on the inner flow passage of same valve body The break-make enough realizing cryogen controls and/or throttling expansion control function, and structure is simply it is easy to producing and installing, and works as this practicality When the expansion switch valve of new offer is applied to heat pump, pipeline can be simplified and connect reduces cost, and reduce whole heat The refrigerant charge of pumping system, is easy to compressor oil return.

Other feature and advantage of the present utility model will be described in detail in subsequent specific embodiment part.

Brief description

Accompanying drawing is used to provide and further understands to of the present utility model, and constitutes a part for description, and following Specific embodiment be used for together explaining this utility model, but do not constitute to restriction of the present utility model.In the accompanying drawings：

Fig. 1 is the overlooking the structure diagram of the expansion switch valve that this utility model preferred implementation provides；

Fig. 2 is the cross-sectional view crossed by along Fig. 1 center line AB-AB, and wherein, the first valve port and the second valve port are all located In open mode；

Fig. 3 be the expansion switch valve that this utility model preferred implementation provides face structural representation along a visual angle Figure；

Fig. 4 is the cross-sectional view crossed by along Fig. 1 center line AB-AB, and wherein, the first valve port is in open mode, Second valve port is in closure state；

Fig. 5 is the cross-sectional view crossed by along Fig. 1 center line AB-AB, and wherein, the first valve port is in closure state, Second valve port is in open mode；

Fig. 6 is that the structure of facing along another visual angle of the expansion switch valve that this utility model preferred implementation provides is shown It is intended to；

Fig. 7 is the cross-sectional view crossed by along Fig. 6 center line AC-AC, and wherein, the first valve port is in open mode, Second valve port is in closure state；

Fig. 8 is the first internal structure schematic diagram of the expansion switch valve that this utility model preferred implementation provides, wherein, First valve port and the second valve port are in open mode；

Fig. 9 is the partial enlarged drawing in A portion in Fig. 8；

Figure 10 is the second internal structure schematic diagram of the expansion switch valve that this utility model preferred implementation provides, its In, the first valve port is in open mode, and the second valve port is closed；

Figure 11 is the 3rd internal structure schematic diagram of the expansion switch valve that this utility model preferred implementation provides, its In, the first valve port is closed, and the second valve port is in open mode.

Description of reference numerals

500 valve body 501 import 502 exports

503 first valve element, 513 first valve rod 523 first plug

504 second valve element 514 second valve rod 505 restriction

506 first flow 516 first valve port 526 first through hole

507 second flow channel, 517 second valve port 527 second through hole

510 valve seat, 511 first valve casing 521 first electromagnetic drive part

512 second valve casing 522 second electromagnetic drive part

Specific embodiment

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.It should be appreciated that herein Described specific embodiment is merely to illustrate and explains this utility model, is not limited to this utility model.

In this utility model, in the case of illustrating on the contrary, the noun of locality such as " upper and lower, left and right " of use is generally It is for the page of accompanying drawing, " upstream, downstream " is with respect to medium, e.g., for the flow direction of cold-producing medium , specifically, the flow direction towards cold-producing medium is downstream, and the flow direction deviating from cold-producing medium is upstream, and " inside and outside " refers to phase Answer the interior and outer of component outline.

As shown in figure 1, this utility model provides a kind of expansion switch valve, including valve body 500, wherein, shape on this valve body 500 Become to have import 501, the outlet 502 and connection inner flow passage between import 501 and outlet 502, inner flow passage is provided with First valve element 503 and the second valve element 504, the first valve element 503 makes import 501 directly connect with outlet 502 or disconnect connection, the Two valve elements 504 make import 501 connect by restriction 505 with outlet 502 or disconnect connection.

Wherein, " directly the connecting " that the first valve element is realized refers to that the coolant of import 501 entrance from valve body 500 is permissible Cross the first valve element and pass through the outlet 502 that inner flow passage insusceptibly flows directly to valve body 500, the first valve element is realized " disconnecting connection " refers to that the coolant entering from the import 501 of valve body 500 cannot be crossed the first valve element and can not flow by inside Road flows to the outlet 502 of valve body 500." being connected by restriction " that second valve element is realized refers to the import 501 from valve body 500 The coolant entering can be crossed the second valve element and flow to the outlet 502 of valve body 500 after the throttling of restriction, and the second valve " disconnect connection " that core is realized refer to the coolant entering from the import 501 of valve body 500 cannot cross the second valve element and can not Flow to the outlet 502 of valve body 500 by restriction 505.

So, by the control to the first valve element and the second valve element, the expansion switch valve of the present invention is so that from import Three kinds of states at least realized by the coolant of 501 entrance.That is, 1) cut-off state；2) cross the direct connected state of the first valve element 503 State；And 3) cross the throttling mode of communicating of the second valve element 504.

Wherein, the liquid refrigerant of High Temperature High Pressure, again after restriction 505 throttling, can become the vaporific of low-temp low-pressure Hydraulic pressure cold-producing medium, can be cold-producing medium evaporation create conditions, that is, the cross-sectional area of restriction 505 be less than outlet 504 horizontal stroke Sectional area, and by controlling the second valve element, the aperture size of restriction 505 can be adjusted, with controlling stream through restriction 505 Flow, prevents the refrigeration deficiency because of the very few generation of cold-producing medium, and prevents from making compressor produce liquid hammer because cold-producing medium is excessive Phenomenon.That is, the cooperation of the second valve element 504 and valve body 500 is so that expand the function that switch valve has expansion valve.

So, by the first valve element 503 and the second valve element 504 are installed on the inner flow passage of same valve body 500, to realize The break-make of import 501 and outlet 502 controls and/or throttling control function, and structure is simply it is easy to producing and installing, and works as this reality When being applied to heat pump with the expansion switch valve of new offer, it is possible to reduce the refrigerant charge of whole heat pump, fall Low cost, simplifies pipeline and connects, the more conducively oil return of heat pump.

As a kind of exemplary inner mounting structure of valve body 500, as shown in Figures 1 to 6, valve body 500 includes being formed The valve seat 510 of inner flow passage and the first valve casing 511 being arranged on this valve seat 510 and the second valve casing 512, in the first valve casing 511 The first electromagnetic drive part 521 for driving the first valve element 503 is installed, is provided with the second valve casing 512 for driving second Second electromagnetic drive part 522 of valve element 504, the first valve element 503 extends to the inner flow passage in valve seat 510 from the first valve casing 511, Second valve element 504 extends to the inner flow passage in valve seat 510 from the second valve casing 512.

Wherein, by the first electromagnetic drive part 521, e.g., solenoid, the control of power on/off can easily control The position of the first valve element 503, and then control import 501 directly to connect with outlet 502 or disconnect connection；By driving to the second electromagnetism Dynamic portion 522, e.g., solenoid, the control of power on/off can easily control the position of the second valve element 504, thus control into Whether mouth 501 is connected with restriction 505 with outlet 502.In other words, it has been installed in parallel total import 501 and outlet in valve body 500 502 electric expansion valve and electromagnetic valve it is thus possible to realize expanding the break-make of switch valve and/or the Automated condtrol of throttling, and Simplify pipeline trend.

For making full use of the locus of all directions expanding switch valve, it is to avoid expand switch valve and different pipeline connects Produce and interfere, valve seat 510 is formed as polyhedral structure, the first valve casing 511, the second valve casing 512, import 501 and outlet 502 are respectively It is arranged on the different surfaces of this polyhedral structure, wherein, the installation direction of the first valve casing 511 and the second valve casing 512 is mutually vertical Directly, the opening direction of import 501 and outlet 502 is mutually perpendicular to.As such, it is possible to import, export pipeline are connected to polyhedron knot On the different surfaces of structure, it can be avoided that pipeline arranges problem that is in disorder, tangling.

As a kind of typical internal structure of electromagnetic expanding valve, as shown in Figures 1 to 4, inner flow passage include respectively with The first flow 506 of import 501 connection and second flow channel 507, first flow 506 are formed with and the first valve element 503 cooperation First valve port 516, restriction 505 is formed in second flow channel 507 to be formed as the second valve port with the second valve element 504 cooperation 517, first flow 506 and second flow channel 507 are intersected in the downstream of the second valve port 517 and are connected with outlet 502.

That is, by converting the position of the first valve element 503 and realizing the closing to the first valve port 516 or open, and then control Connection import 501 being blocked or turning on, such that it is able to realize above-described electromagnetic valve with the first flow 506 of outlet 502 Connection or the function of disconnecting connection.Similarly, realize cutting to the second valve port 517 by converting the position of the second valve element 504 Break or turn on, such that it is able to realize the throttling function of electric expansion valve.

First flow 506 and second flow channel 507 can be respectively communicated with import 501 and outlet with any appropriate arrangement 502, the entirety for reducing valve body 500 takes up room, as shown in figure 5, second flow channel 507 is opened up in the same direction with outlet 502, first-class Road 506 is formed as the orthogonal first through hole 526 with second flow channel 507, and import 501 is by being opened in second flow channel 507 side The second through hole 527 on wall is connected with second flow channel 507, and first through hole 526 and the second through hole 527 are respectively communicated with import 501. Wherein, first through hole 526 or can be arranged in parallel in spatial vertical setting with the second through hole 527, and this utility model is to this not It is restricted, belong among protection domain of the present utility model.

Entirety for simplifying valve body 500 further takes up room, as shown in Figs. 8 to 11, import 501 and outlet 502 phases Mutually vertically it is opened on valve body 500.So, as shown in Fig. 8 to Figure 10, the axis of import 501, the axis (i.e. the of outlet 502 The axis of two runners 507), and the axis of first flow 506 is vertically arranged two-by-two in space, thus preventing the first valve element 503 Mobile generation with the second valve element 504 is interfered, and can substantially utilize the inner space of valve body 500.

As shown in Figure 4 and Figure 5, for ease of realizing the closing of the first valve port 516 and opening, the first valve element 503 is along movement side Coaxially lay to the first valve port 516 selectively to block or to depart from the first valve port 516.

For ease of realizing the closing of the second valve port 517 and opening, the second valve element 504 is along moving direction and the second valve port 517 Coaxially lay selectively to block or to depart from the second valve port 517.

Wherein, as shown in fig. 7, being to ensure the reliability that the first valve element 503 blocks, the first valve element 503 to first flow 506 The first valve rod 513 and the first plug 523 being connected to this first valve rod 513 end can be included, this first plug 523 is used for close Envelope is pressed against on the end face of the first valve port 516 to block first flow 506.

For ease of adjusting the aperture size of the restriction 505 expanding switch valve, as shown in Figure 4 and Figure 5, the second valve element 504 Including the second valve rod 514, the end of this second valve rod 514 is formed as taper header structure, and the second valve port 517 is formed as and this taper The taper pore structure that header structure matches.

Wherein, restriction 505 aperture expanding switch valve can be adjusted by the second moving up and down of valve element 504, and Moving up and down of second valve element 504 can be adjusted by the second electromagnetic drive part 522.If expanding the restriction 505 of switch valve Aperture be zero, as shown in figure 4, the second valve element 504 is in extreme lower position, the second valve element 504 block the second valve port 517, refrigeration Agent can not pass through restriction 505, i.e. the second valve port 517 completely；If expanding switch valve restriction 505 there is aperture, as Fig. 5 institute Show there is between the taper header structure of the end of the second valve element 504 and restriction 505 space, flow to out again after cold-producing medium throttling Mouth 502.When if desired increasing the throttle opening expanding switch valve, can be by controlling the second electromagnetic drive part 522 so that second Valve element 504 moves up, so that taper header structure is away from restriction 505, thus the change realizing restriction 505 aperture is big；Phase Instead, when the aperture needing to reduce the restriction 505 expanding switch valve, can order about mobile under the second valve element 504 phase.

During use, when only needing to the electromagnetic valve function using expansion switch valve, as shown in Fig. 4, Fig. 7 and Figure 10, first Valve element 503 departs from the first valve port 516, and the first valve port 516 is in open mode, and the second valve element 504 is in extreme lower position, the second valve Throttle orifice 505 is blocked by core 504, and the cold-producing medium flowing into inner flow passage from import 501 can not pass through throttle orifice 505 completely, The first valve port 516 can only be passed sequentially through, first through hole 526 flows in outlet 502.When electromagnetic valve power-off, the first valve element 503 to Move left, the first plug 523 and the first valve port 516 separate, and cold-producing medium can pass through from first through hole 526；When electromagnetic valve leads to Electricity, the first valve element 503 moves right, and the first plug 523 and the first valve port 516 are fitted, and cold-producing medium cannot be from first through hole 526 Pass through.

It should be noted that the dotted line with arrow in Fig. 4 and Figure 10 represents cold-producing medium when using electromagnetic valve function Flow route and trend.

When only needing to the electric expansion valve function using expansion switch valve, as shown in Fig. 5 and Figure 11, the second valve port 517, I.e. restriction 505 is in open mode, and the first valve element 503 blocks the first valve port 516, flows into inner flow passage from import 501 Cold-producing medium cannot pass through first through hole 526, can only pass sequentially through the second through hole 527, restriction 505 flows in outlet 502, and And the second valve element 504 can be moved up and down to adjust the size of the aperture of restriction 505.

It should be noted that the dotted line with arrow in Fig. 5 and Figure 11 represents cold-producing medium using electric expansion valve function When flow route and trend.

When needing simultaneously using the electromagnetic valve function of expanding switch valve and electric expansion valve function, such as Fig. 2, Fig. 8 and Fig. 9 Shown, wherein, the dotted line with arrow represents glide path and the trend of cold-producing medium, and the first valve element 503 departs from the first valve port 516, the first valve port 516 is in open mode, and restriction 505 is in open mode, and the cold-producing medium flowing into inner flow passage is permissible Flow to outlet 502 along first flow 506 and second flow channel 507 respectively, thus have electromagnetic valve function and electric expansion valve simultaneously Function.

Describe preferred implementation of the present utility model above in association with accompanying drawing in detail, but, this utility model does not limit Detail in above-mentioned embodiment, in range of the technology design of the present utility model, can be to skill of the present utility model Art scheme carries out multiple simple variant, and these simple variant belong to protection domain of the present utility model.

It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, this utility model is to each Plant possible compound mode no longer separately to illustrate.

Additionally, combination in any can also be carried out, as long as it is not disobeyed between various different embodiment of the present utility model Carry on the back thought of the present utility model, it equally should be considered as content disclosed in the utility model.

Claims

1. a kind of expansion switch valve, including valve body (500) it is characterised in that being formed with import (501) on this valve body (500), going out Mouth (502) and the connection inner flow passage between described import (501) and described outlet (502), described inner flow passage is pacified Equipped with the first valve element (503) and the second valve element (504), described first valve element (503) makes described import (501) and described outlet (502) directly connect or disconnect connection, described second valve element (504) makes described import (501) and described outlet (502) pass through Restriction (505) connection or disconnection connection.

2. according to claim 1 expansion switch valve it is characterised in that described inner flow passage include respectively with described import (501) first flow (506) connecting and second flow channel (507), described first flow (506) is formed with and described first valve The first valve port (516) that core (503) coordinates, described restriction (505) be formed in described second flow channel (507) be formed as with The second valve port (517) that described second valve element (504) coordinates, described first flow (506) and described second flow channel (507) cross Connect in the downstream of described second valve port (517) and with described outlet (502).

3. expansion switch valve according to claim 2 is it is characterised in that described second flow channel (507) and described outlet (502) open up in the same direction, described first flow (506) is formed as the orthogonal first through hole with described second flow channel (507) (526), described import (501) is by being opened in the second through hole (527) and described second on the wall of described second flow channel (507) side Runner (507) connects, and described first through hole (526) and described second through hole (527) are respectively communicated with described import (501).

4. the expansion switch valve according to any one in claim 1-3 is it is characterised in that described import (501) and institute State outlet (502) to be opened in mutual vertically on described valve body (500).

5. the expansion switch valve according to Claims 2 or 3 is it is characterised in that described first valve element (503) is along moving direction Laying coaxial with described first valve port (516) is selectively to block or to depart from described first valve port (516).

6. the expansion switch valve according to Claims 2 or 3 is it is characterised in that described second valve element (504) is along moving direction Laying coaxial with described second valve port (517) is selectively to block or to depart from described second valve port (517).

7. expansion switch valve according to claim 5 is it is characterised in that described first valve element (503) includes the first valve rod (513) and be connected to first plug (523) of this first valve rod (513) end, this first plug (523) is used for being sealed against To block described first flow (506) on the end face of described first valve port (516).

8. expansion switch valve according to claim 6 is it is characterised in that described second valve element (504) includes the second valve rod (514), the end of this second valve rod (514) is formed as taper header structure, and described second valve port (517) is formed as and this conical head The taper pore structure that structure matches.

9. expansion switch valve according to claim 1 is it is characterised in that described valve body (500) includes forming described inside The valve seat (510) of runner and the first valve casing (511) being arranged on this valve seat (510) and the second valve casing (512), described first valve The first electromagnetic drive part (521) for driving described first valve element (503), described second valve casing are installed in shell (511) (512) the second electromagnetic drive part (522) for driving described second valve element (504), described first valve element (503) are installed in Extend to the described inner flow passage in described valve seat (510) from described first valve casing (511), described second valve element (504) is from institute State the second valve casing (512) and extend to the described inner flow passage in described valve seat (510).

10. expansion switch valve according to claim 9 is it is characterised in that described valve seat (510) is formed as polyhedron knot Structure, described first valve casing (511), described second valve casing (512), described import (501) and described outlet (502) are respectively provided with On the different surfaces of this polyhedral structure, wherein, the installation side of described first valve casing (511) and described second valve casing (512) To being mutually perpendicular to, the opening direction of described import (501) and described outlet (502) is mutually perpendicular to.