CN217381733U

CN217381733U - Flow path switching valve

Info

Publication number: CN217381733U
Application number: CN202123126059.XU
Authority: CN
Inventors: 金华海; 宣永斌; 寿周阳
Original assignee: HANGZHOU SAFETY EQUIPMENT CO Ltd
Current assignee: HANGZHOU SAFETY EQUIPMENT CO Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-09-06
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to the technical field of valves, especially, relate to a flow path diverter valve, include: the valve body is internally provided with a valve cavity, and the valve body is respectively provided with a first interface, a second interface and at least one switching flow path which are communicated with the valve cavity; the switching tube is provided with a first end and a second end, the first end is rotatably connected with the valve body and is connected with the first interface, and the second end is positioned in the valve cavity; the switching tube can rotate to enable the second end to be communicated with any switching flow path; the power amplification mechanism is connected with the first end; and the transmission mechanism is matched with the power amplification mechanism for transmission, and drives the switching pipe to rotate through the power amplification mechanism so that the second end is connected with one of the switching flow paths. The application provides a flow path diverter valve only needs less power drive mechanism to move, just can drive the switching pipe and rotate, simple structure, and the drive mode is simple, need not to establish pressure differential environment to eliminate the application environment and the requirement of application operating mode to the valve, enlarged the application scope of product.

Description

Flow path switching valve

Technical Field

The utility model relates to a valve technical field especially relates to a flow path diverter valve.

Background

At present, most of switching valves are driven by pressure difference, when the switching valves are used, the pressure difference is required to be established at the high side and the low side of a valve body, and then the switching valves are started to switch flow paths, so that the requirements of the switching valves on application environments and application scenes exist, the application working conditions of products are limited, and the application range is small.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a flow path switching valve that is simple in flow path switching and has a wide application range.

The utility model provides a pair of flow path diverter valve, flow path diverter valve includes: the valve comprises a valve body, a valve cavity and a valve body, wherein the valve body is internally provided with a first interface, a second interface and at least one switching flow path which are communicated with the valve cavity; the switching tube is provided with a first end and a second end, the first end is rotatably connected with the valve body and is connected with the first interface, and the second end is positioned in the valve cavity; the switching tube is rotatable so that the second end communicates with any one of the switching flow paths; a power amplification mechanism connected with the first end; and the transmission mechanism is matched with the power amplification mechanism for transmission, and drives the switching pipe to rotate through the power amplification mechanism so as to enable the second end to be communicated with one of the switching flow paths.

In one embodiment, the power amplification mechanism comprises a mating member connected to the first end, and the transmission mechanism comprises a transmission member applying a transmission force to the mating member to mate the transmission to rotate the switching tube; wherein the transmission force consists of a circumferential force and/or a radial force.

In one embodiment, the engaging piece is a first gear, the transmission piece is a second gear, and the first gear and the second gear are in meshing transmission.

In one embodiment, the first gear is a sector gear.

In one embodiment, the transmission mechanism further includes a transmission shaft and a power element, one end of the transmission shaft is connected to the transmission member, the other end of the transmission shaft is connected to the power element, the power element is used for driving the transmission shaft to rotate, and the transmission shaft drives the transmission member to rotate.

In one embodiment, the power member is disposed outside the valve body; the valve body is provided with a connecting through hole, and the connecting through hole corresponds to the transmission shaft, so that one end of the transmission shaft extends out of the connecting through hole and is connected with the power part.

In one embodiment, an accommodating cavity is formed in the valve body, the power piece is arranged in the accommodating cavity, and the accommodating cavity is isolated from the valve cavity.

In one embodiment, a support table is disposed on a side wall of the valve body, the support table is located at an end of the valve body close to the first port, and the power amplification mechanism is located on the support table, so that the support table supports the power amplification mechanism and the switching tube.

In one embodiment, the flow path switching valve further includes a first rotating member, the first rotating member is sleeved on the first end and is located between the switching tube and the cavity wall of the valve cavity, so that the switching tube is rotatably connected with the valve body through the first rotating member.

In one embodiment, the flow path switching valve further includes a second rotating member, the second end of the switching tube is rotatably connected to the valve body via the second rotating member, and the first rotating member and the second rotating member are coaxially disposed.

The utility model provides a pair of flow path diverter valve compares as follows in prior art's beneficial effect:

the utility model provides a pair of flow path diverter valve, through power amplification mechanism and drive mechanism cooperation transmission, drive mechanism, so that drive mechanism will drive power transmission to power amplification mechanism, power amplification mechanism and then the switching pipe that drives to be connected with it rotates the intercommunication relation between switching flow path and first interface and the second interface, so set up, only need less power drive mechanism motion, just can drive the switching pipe and rotate, moreover, the steam generator is simple in structure, the drive mode is simple, need not to establish the pressure differential environment, thereby eliminate the requirement to flow path diverter valve application environment and application operating mode, the application operating mode and the application scope of product have been enlarged.

Drawings

Fig. 1 is a schematic view of a flow path switching valve provided in an embodiment of the present invention.

Fig. 2 is a sectional view of the flow path switching valve of fig. 1.

Fig. 3 is a schematic structural diagram of a flow path switching valve provided in another embodiment of the present invention.

Fig. 4 is a sectional view a-a in fig. 3.

Fig. 5 is a schematic structural diagram of another view angle of the flow path switching valve in fig. 3.

Fig. 6 is a sectional view taken along line B-B in fig. 5.

Fig. 7 is a schematic view of a transmission mechanism provided in an embodiment of the present invention.

Fig. 8 is a schematic view of a power transmission mechanism provided in an embodiment of the present invention.

Fig. 9 is a schematic view of a power transmission mechanism provided in another embodiment of the present invention.

In the figure, 100, a flow path switching valve; 10. a valve body; 11. a first interface; 12. a second interface; 13. switching a flow path; 13a, a first switching flow path; 13b, a second switching flow path; 14. a valve cavity; 15. a connecting through hole; 16. an accommodating cavity; 17. a support table; 20. switching the tube; 21. a first end; 22. a second end; 23. a mounting member; 30. a power amplification mechanism; 31. a mating member; 311. a first mounting hole; 40. a transmission mechanism; 41. A transmission member; 42. a drive shaft; 43. a power member; 50. a first rotating member; 60. a second rotating member.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

An embodiment of the present invention provides a flow path switching valve 100, where the flow path switching valve 100 is used to switch the flow relationship between a plurality of flow paths, and referring to fig. 1 to 9, the flow path switching valve 100 includes a valve body 10, a switching tube 20, a power amplifying mechanism 30 and a transmission mechanism 40, where a valve cavity 14 is provided inside the valve body 10, and the valve body 10 is provided with a first interface 11, a second interface 12 and at least one switching flow path 13 respectively communicated with the valve cavity 14; the switching tube 20 has a first end 21 and a second end 22, the first end 21 is rotatably connected with the valve body 10 and is connected and communicated with the first interface 11, and the second end 22 is positioned in the valve cavity 14; the power amplification mechanism 30 is connected with the first end 21 of the switching tube 20, the transmission mechanism 40 is in transmission fit with the power amplification mechanism 30, the transmission mechanism 40 drives the switching tube 20 to rotate through the power amplification mechanism 30, and when the switching tube 20 rotates, the second end 22 is connected with any one of the switching flow paths 13, so that the purpose of switching the flow paths 13 is achieved.

This application is through power amplification mechanism 30 and the transmission of drive mechanism 40 cooperation, drive mechanism 40, so that drive mechanism 40 will drive power transmission to power amplification mechanism 30, power amplification mechanism 30 and then drive the switching pipe 20 of being connected with it and rotate the intercommunication relation between switching flow path 13 and first interface 11 and the second interface 12, so set up, only need less power drive mechanism 40 motion, just can drive switching pipe 20 and rotate, moreover, the steam generator is simple in structure, the drive mode is simple, need not to establish the pressure differential environment, thereby eliminate the requirement to flow path diverter valve 100 application environment and application condition, the application operating mode and the application scope of product have been enlarged.

The flow path switching valve 100 is generally applied to a heat exchange system of an air conditioner, and the heat exchange system generally includes a compressor (not shown), an oil separator (not shown), a first heat exchanger (not shown), and a second heat exchanger (not shown), where the second heat exchanger is an outdoor heat exchanger; wherein the oil separator can separate oil droplets and gaseous refrigerant entering the oil separator. The refrigerant separated by the oil separator may flow to the first heat exchanger or the second heat exchanger through the flow path switching valve 100, and oil droplets collected by the oil separator may be returned to the compressor to replenish the oil. The oil separator communicates with an exhaust port of the compressor, separates oil droplets discharged from the compressor from the gaseous refrigerant, and the separated refrigerant flows through the plurality of switching flow paths 13 to the corresponding heat exchangers.

Correspondingly, in one embodiment, referring to fig. 2 or fig. 6, the number of the switching flow paths 13 is two, namely, the first switching flow path 13a and the second switching flow path 13 b. The first interface 11 is used for communicating with a suction port of the compressor, the second interface 12 is used for communicating with a discharge port of the compressor, and the oil separator is arranged in a passage of the second interface 12 and the discharge port; the first switching flow path 13a communicates with the first heat exchanger, the second switching flow path 13b communicates with the second heat exchanger, and the communication relationship between the compressor and the first and second heat exchangers can be adjusted by rotating the switching tube 20. Of course, in other embodiments, the flow path switching valve 100 may be used not only in a heat exchange system of an air conditioner, but also in an application scenario where a flow path relationship needs to be changed. Also, in other embodiments, the first port 11 may be for communication with a discharge port of a compressor and the corresponding second port 12 may be for communication with a suction port of the compressor.

Specifically, referring to fig. 1 and 2, the first port 11 is provided at one end of the valve body 10, the first switching flow path 13a and the second switching flow path 13b are provided at the other end of the valve body 10, and the second port 12 is opened on the circumferential side of the valve body 10 in the axial direction of the valve body 10. In other embodiments, the positions where the first switching flow path 13a and the second switching flow path 13b are provided are not limited to the above, and for example, the first switching flow path 13a and the second switching flow path 13b may be provided on the circumferential side of the valve body 10.

When the heat exchange system is in a cooling state, the switching tube 20 is rotated to communicate the switching tube 20 with the first switching flow path 13a, so that the first port 11 is communicated with the first switching flow path 13a, and the second port 12 is communicated with the second switching flow path 13b through the valve cavity 14, so that the refrigerant sequentially flows from the first heat exchanger through the first switching flow path 13a, the switching tube 20, the first port 11, the suction port of the compressor, the exhaust port of the compressor, the oil separator, the second port 12, the valve cavity 14, the second switching flow path 13b and the second heat exchanger, at this time, the first heat exchanger functions as a condenser, and the second heat exchanger functions as an evaporator.

When the heat exchange system is in a heating state, the switching pipe 20 is rotated to communicate the switching pipe 20 with the second switching flow path 13b, so that the first port 11 is communicated with the second switching flow path 13b, and the second port 12 is communicated with the first switching flow path 13a through the valve cavity 14, so that the refrigerant flows through the second switching flow path 13b, the switching pipe 20, the first port 11, the suction port of the compressor, the exhaust port of the compressor, the oil separator, the second port 12, the valve cavity 14, the first switching flow path 13a and the first heat exchanger from the second heat exchanger in sequence, at this time, the first heat exchanger plays a role of an evaporator, and the second heat exchanger plays a role of a condenser.

In one embodiment, referring to fig. 1 and 2, or referring to fig. 3-6, the power amplifying mechanism 30 includes a fitting member 31, the fitting member 31 is connected to the first end 21, the transmission mechanism 40 includes a transmission member 41, and the transmission member 41 applies a transmission force to the fitting member 31 to cooperate with transmission to rotate the switching tube 20; the transmission force is composed of a circumferential force and/or a radial force, so that the switching tube 20 is not subjected to an axial force, the switching tube 20 cannot generate displacement along the axial direction of the valve body 10 in the transmission process, the second end 22 of the switching tube 20 is ensured to be connected and tightly contacted with the first switching flow path 13a or the second switching flow path 13b, and leakage and blow-by of refrigerant are prevented.

In one embodiment, referring to fig. 1-8, the engaging element 31 is a first gear, the transmission element 41 is a second gear, and the first gear and the second gear are engaged for transmission. So set up, through the drive ratio who changes first gear and second gear, use the first gear rotation of less drive power drive, can drive the second gear rotation and drive switching tube 20 and rotate, so, only need very little drive power can realize switching tube 20's rotation, the drive mode is simple to do not have the requirement to the application environment, need not to pay attention to application environment pressure differential, obviously strengthen flow path diverter valve 100's suitability and energy-conserving performance. Of course, in other embodiments, the engaging element 31 and the transmission element 41 may be a worm gear, wherein the engaging element 31 is a worm gear, or the engaging element 31 and the transmission element 41 may be a belt or chain transmission.

Preferably, in another embodiment, referring to fig. 9, the first gear may be a sector gear. Therefore, according to the maximum rotation angle required, the sector gear with the appropriate central angle is correspondingly selected. For example, when the angle between the center of each of the first switching flow path 13a and the second switching flow path 13b and the line connecting the rotation axes of the switching tubes 20 is 60 °, the maximum angular stroke of the switching tubes 20 required to rotate is 60 °, and the central angle of the corresponding sector gear is 60 °, that is, the maximum angular stroke of the sector gear rotation is 60 °, so that a complete gear plate is not required, the weight of the flow path switching valve 100 is reduced, and it is advantageous to save cost and reduce the machining workload.

Referring to fig. 2, 8 and 9, a first mounting hole 311 is formed on the fitting piece 31, a mounting piece 23 is disposed on the first end 21 of the switching tube 20, and a second mounting hole (not shown) is correspondingly formed on the mounting piece 23, and a fastener is inserted through the first mounting hole 311 and the second mounting hole to connect the fitting piece 31 and the switching tube 20, so that the fitting piece 31 can be conveniently detached and replaced, of course, in other embodiments, the connection manner of the fitting piece 31 and the switching tube 20 is not limited to the above or shown in the drawings, and may be, for example, welding.

Referring to fig. 1-7, in one embodiment, the transmission mechanism 40 further includes a transmission shaft 42 and a power element 43, one end of the transmission shaft 42 is connected to the transmission element 41, and the other end is connected to the power element 43, the power element 43 is used for driving the transmission shaft 42 to rotate, and the transmission shaft 42 drives the transmission element 41 to rotate. Specifically, the power member 43 is a driving motor, but the power member 43 may be another driving mechanism.

Referring to fig. 1 and 2, the power element 43 is disposed outside the valve body 10; the valve body 10 is provided with a connecting through hole 15, and the connecting through hole 15 corresponds to the transmission shaft 42, so that one end of the transmission shaft 42 extends out of the connecting through hole 15 and is connected with the power piece 43. By such arrangement, the power member 43 can be arranged outside the flow path switching valve 100, that is, the transmission shaft 42 can be externally connected with the power member 43, so that the power members 43 with different powers can be replaced according to different application scenes during application, the power of the power members 43 can be adapted to application conditions, and the working efficiency is improved; and the power part 43 is damaged, detached and replaced, and the power part 43 is simple and convenient, so that the maintenance difficulty is reduced. The transmission shaft 42 is rotatably connected with the valve body 1 and can be rotatably connected with the valve body through a bearing or a shaft sleeve, so that the rotation of the rotation shaft 42 is facilitated, and the friction force between the transmission shaft and the valve body is reduced. The power member 43 may also be fixedly installed outside the valve body 1 to drive the rotation shaft 42 to rotate.

Of course, in other embodiments, the position of the power member 43 is not limited to the above, for example, in another embodiment, referring to fig. 3 to 5, the accommodating cavity 16 is formed in the valve body 10, the power member 43 is disposed in the accommodating cavity 16, and the accommodating cavity 16 is isolated from the valve cavity 14. By arranging the power member 43 in the accommodating cavity 16, the power member 43 is prevented from being corroded or damaged, the service life of the power member 43 is prolonged, and meanwhile, the power member 43 is arranged in the accommodating cavity 16, so that the power member 43 is not corroded by the external application environment, the requirements on the application scene and the application working condition are reduced, and the applicability of the flow path switching valve 100 is improved.

Further, referring to fig. 4 and 6, a support table 17 is disposed on a side wall of the valve body 10, the support table 17 is located at an end of the valve body 10 close to the first port 11, and the power amplification mechanism 30 is located on the support table 17, so that the support table 17 supports the power amplification mechanism 30 and the switching tube 20, the power amplification mechanism 30 and the switching tube 20 are ensured to be stably mounted, the mounting stability of the power amplification mechanism 30 and the switching tube 20 is improved, the power amplification mechanism 30 and the switching tube 20 can be ensured to be stably mounted even under a vibration condition, and the connection tightness between the switching tube 20 and the switching flow path 13 is improved.

Referring to fig. 4 and fig. 6, in one embodiment, the flow path switching valve 100 further includes a first rotating member 50, the first rotating member 50 is sleeved on the first end 21 and is located between the switching tube 20 and the cavity wall of the valve cavity 14, so that the switching tube 20 is rotatably connected to the valve body 10 through the first rotating member 50, and friction between the cavity wall and the switching tube 20 is further reduced, so that the transmission mechanism 40 can more accurately drive the switching tube 20 to rotate at a position where the switching tube 20 is butted with the switching flow path 13, the butting is more accurate, and the butting misalignment is prevented.

Referring to fig. 4 and fig. 6, the second end 22 of the switching tube 20 is rotatably connected to the valve body 10, so that both ends of the switching tube 20 are rotatably connected to the valve body 10, thereby ensuring stable rotation of both ends of the switching tube 20 during rotation and preventing the second end 22 of the switching tube 20 from being skewed to affect rotation accuracy.

Preferably, referring to fig. 4 and 6, the flow path switching valve 100 further includes a second rotating member 60, the second end 22 of the switching tube 20 is rotatably connected to the valve body 10 by the second rotating member 60, and the first rotating member 50 and the second rotating member 60 are coaxially disposed. Through setting up the second and rotating piece 60, reduce the chamber wall and switch the frictional force between the pipe 20, guarantee to switch the pipe 20 and revolve the precision to make drive mechanism 40 can more accurate drive switch the pipe 20 and rotate and switch the position department that flow path 13 docked, the butt joint is more accurate, prevents to dock the dislocation.

With continued reference to fig. 4 and 6, in one embodiment, the first transmission member 41 and the second transmission member 41 are bearings or bushings, but may be other components for supporting the mechanical rotating body.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The features of the above embodiments may be combined arbitrarily, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims

1. A flow path switching valve, characterized by comprising:

the valve comprises a valve body (10), a valve cavity (14) is formed in the valve body (10), and a first interface (11), a second interface (12) and at least one switching flow path (13) which are communicated with the valve cavity (14) are formed in the valve body (10) respectively;

a switching tube (20) having a first end (21) and a second end (22), the first end (21) being rotatably connected to the valve body (10) and connected to the first port (11), the second end (22) being located in the valve chamber (14); the switching tube (20) being rotatable so that the second end (22) communicates with any one of the switching flow paths (13);

a power amplification mechanism (30) connected to the first end (21);

and the transmission mechanism (40) is matched with the power amplification mechanism (30) for transmission, and the transmission mechanism (40) drives the switching tube (20) to rotate through the power amplification mechanism (30) so as to communicate the second end (22) with one of the switching flow paths (13).

2. The flow path switching valve according to claim 1, wherein the power amplification mechanism (30) includes a fitting member (31), the fitting member (31) being connected to the first end (21), the transmission mechanism (40) includes a transmission member (41), the transmission member (41) applying a transmission force to the fitting member (31) to engage transmission to rotate the switching tube (20);

wherein the transmission force consists of a circumferential force and/or a radial force.

3. The flow path switching valve according to claim 2, wherein the engaging member (31) is a first gear, and the transmission member (41) is a second gear, and the first gear is in meshing transmission with the second gear.

4. The flow path switching valve according to claim 3, wherein the first gear is a sector gear.

5. The flow path switching valve according to claim 2, wherein the transmission mechanism (40) further comprises a transmission shaft (42) and a power member (43), the transmission shaft (42) is connected to the transmission member (41) at one end and connected to the power member (43) at the other end, the power member (43) is used for driving the transmission shaft (42) to rotate, and the transmission shaft (42) drives the transmission member (41) to rotate.

6. The flow path switching valve according to claim 5, wherein the power member (43) is provided outside the valve body (10); the valve body (10) is provided with a connecting through hole (15), the connecting through hole (15) corresponds to the transmission shaft (42), so that one end of the transmission shaft (42) extends out of the connecting through hole (15) and is connected with the power part (43).

7. The flow path switching valve according to claim 5, wherein a housing chamber (16) is formed in the valve body (10), the power member (43) is disposed in the housing chamber (16), and the housing chamber (16) is isolated from the valve chamber (14).

8. The flow path switching valve according to claim 1 or 3, wherein a support table (17) is provided on a side wall of the valve body (10), and the support table (17) is located at an end of the valve body (10) close to the first port (11), and the power amplification mechanism (30) is located on the support table (17) so that the support table (17) supports the power amplification mechanism (30) and the switching tube (20).

9. The flow path switching valve according to claim 1, further comprising a first rotating member (50), wherein the first rotating member (50) is sleeved on the first end (21) and is located between the switching tube (20) and the cavity wall of the valve cavity (14) so that the switching tube (20) is rotatably connected with the valve body (10) through the first rotating member (50).

10. The flow path switching valve according to claim 9, further comprising a second rotating member (60), wherein the second end (22) of the switching tube (20) is rotatably connected to the valve body (10) by the second rotating member (60), and wherein the first rotating member (50) and the second rotating member (60) are coaxially disposed.