CN109519564B

CN109519564B - Electric valve

Info

Publication number: CN109519564B
Application number: CN201710851077.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2017-09-20
Filing date: 2017-09-20
Publication date: 2020-10-30
Anticipated expiration: 2037-09-20
Also published as: CN109519564A

Abstract

The invention discloses an electric valve, which comprises: the valve body is provided with a first interface, a second interface and a third interface; the valve seat is fixed inside the valve body, a first through hole and a second through hole are formed in the valve seat, the first through hole is a part of a flow channel formed between the first connector and the third connector, and the second through hole is a part of a flow channel formed between the second connector and the third connector; the slider, the slider is located inside the valve body, the slider with sliding fit between the disk seat, the slider for can realize during the disk seat rotates: the first through hole is completely covered and the second through hole is communicated with the third interface, or the first through hole and the second through hole are covered partially at the same time, or the second through hole is completely covered and the first through hole is communicated with the third interface; and the driving device drives the sliding block to rotate. The structure design of the electric valve can effectively simplify the pipeline design.

Description

Electric valve

Technical Field

The invention relates to the technical field of refrigeration parts, in particular to an electric valve.

Background

In an air conditioning system, two electromagnetic valves are generally used as control components for changing a refrigerant flow path, so that switching between cooling and heating modes is realized. However, for a vehicle-mounted air conditioner, the vehicle-mounted space is limited, the two electromagnetic valves not only occupy large space, but also are complex in control method and air conditioner pipeline design.

In summary, how to effectively simplify the pipeline design is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In view of this, the present invention provides an electrically operated valve, the structural design of which can effectively simplify the pipeline design.

In order to achieve the purpose, the invention provides the following technical scheme:

an electrically operated valve comprising:

the valve body is provided with a first interface, a second interface and a third interface;

the valve seat is fixed inside the valve body, a first through hole and a second through hole are formed in the valve seat, the first through hole is a part of a flow channel formed between the first connector and the third connector, and the second through hole is a part of a flow channel formed between the second connector and the third connector;

the slider, the slider is located inside the valve body, the slider with sliding fit between the disk seat, the slider for can realize when the disk seat rotates: the first through hole is completely covered and the second through hole is communicated with the third interface, or the first through hole and the second through hole are covered partially at the same time, or the second through hole is completely covered and the first through hole is communicated with the third interface;

and the driving device drives the sliding block to rotate.

In the above electrically operated valve, the electrically operated valve further includes a gear box, the driving device drives the slider to rotate through the gear box, the gear box includes a box body, a limiting device and a gear set, the gear box is disposed in the valve body, the limiting device includes a first stop lever and a second stop lever, one gear of the gear set is a stop gear matched with the first stop lever and the second stop lever, the stop gear can rotate to abut against the first stop lever, and the stop gear can rotate to abut against the second stop lever.

In the electrically operated valve, the gear box includes at least one gear shaft, and the top end of the first stop rod, the second stop rod and/or at least one gear shaft extends out of the box body.

In the electric valve, one side of the slider, which is close to the valve seat, is provided with a working boss and a supporting boss, the working boss and the supporting boss are in sliding fit with the valve seat, and the working boss completely covers the first through hole, or simultaneously covers part of the first through hole and part of the second through hole, or completely covers the second through hole when the slider rotates.

In the electric valve, the support boss comprises a plurality of strip-shaped bosses, the working boss is a circular boss, and the radius of the circular boss is 1.6-2 mm larger than the radius of the first through hole and the radius of the second through hole.

In the electric valve, a cavity is arranged in the valve body, and the first interface, the second interface and the third interface are communicated with the cavity.

In the electric valve, the electric valve further comprises a positioning shaft fixedly connected with the valve body and the valve seat, and the sliding block is rotatably connected with the positioning shaft.

In the above electric valve, the side wall of the valve seat and the valve body are provided with the compression ring, and one side of the compression ring, which is far away from the sliding block, and the valve seat are provided with the damping sheet.

In the electric valve, a blind hole is formed in one side, away from the valve seat, of the sliding block, a compression elastic piece is arranged in the blind hole, and the compression elastic piece acts to enable the sliding block to be always attached to the valve seat.

In the electric valve, one side of the sliding block, which is far away from the valve seat, is matched with the output end key groove of the gear box.

When the electric valve provided by the invention is applied, the slide block in the driving device body is used for rotating relative to the valve seat, so that the switching of three modes of enabling the refrigerant to flow through the first interface and/or the second interface is realized, the flow path of the refrigerant is changed, and the switching of the refrigeration and the heating of the temperature adjusting equipment can be realized. The electric valve provided by the invention not only functionally replaces two electromagnetic valves, but also can realize the flow proportion regulation of the first through hole and the second through hole, so that the pipeline design of the temperature regulation equipment is simpler, the pipeline design is more compact, and the control strategy of the temperature regulation equipment is simplified.

Drawings

In order to illustrate the embodiments of the invention more clearly, the drawings that are needed for describing the embodiments or prior art will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained by those skilled in the art without inventive effort.

Figure 1 is a cross-sectional view of an electrically operated valve provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of an assembly of a valve seat and a valve body according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of area A of FIG. 2;

FIG. 4 is a schematic view of an alternative angle of assembly of the valve seat and valve body provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a valve seat provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a slider according to an embodiment of the present invention;

FIG. 7 is a schematic view of another angle structure of a slider according to an embodiment of the present invention;

FIG. 8 is a schematic view of a slider engaged with a valve seat according to an embodiment of the present invention;

figure 9 is a schematic diagram of a slider engaged with a valve seat in a first mode of operation of an electrically operated valve according to an embodiment of the present invention;

figure 10 is a schematic diagram of a slider engaged with a valve seat in a second mode of operation of an electrically operated valve according to an embodiment of the present invention;

figure 11 is a schematic diagram of a slider engaged with a valve seat in a third mode of operation of an electrically operated valve according to an embodiment of the present invention;

FIG. 12 is a schematic structural view of a valve cover according to an embodiment of the present invention;

FIG. 13 is a schematic structural view of a gearbox provided in accordance with an embodiment of the present invention;

FIG. 14 is a schematic structural view of the interior of a gearbox according to an embodiment of the present invention;

FIG. 15 shows an electrically operated valve in a first mode of operation according to an embodiment of the present invention;

figure 16 shows the electrically operated valve of the present invention in a third mode of operation within the gearbox.

In fig. 1-16:

1-driving device, 2-valve cover, 2 a-jack, 3-gear box, 3 a-first stop rod, 3 b-second stop rod, 3 c-gear shaft, 3 d-box, 3 e-output end, 3 f-gear group, 4-valve body, 4 a-third interface, 4 b-first interface, 4 c-second interface, 5-positioning shaft, 6-slide block, 6 a-supporting boss, 6 b-working boss, 6 c-shaft hole, 6 d-slotted hole, 6 e-blind hole, 7-valve seat, 7 a-first through hole, 7 b-second through hole, 7 c-positioning hole, 8-press ring and 9-damping sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the electric valve provided by the present invention includes a valve body 4, a valve seat 7, a slider 6 and a driving device 1. The valve body 4 is provided with a first port 4b, a second port 4c and a third port 4 a. The first port 4b and the second port 4c inside the valve body 4 can be communicated with the third port 4a, that is, a first flow passage and a second flow passage are arranged inside the valve body 4, the first flow passage is communicated with the first port 4b and the third port 4a, and the second flow passage is communicated with the second port 4c and the third port 4 a. The refrigerant may enter and exit the electric valve through the first port 4b and the third port 4a, or may enter and exit the electric valve through the second port 4c and the third port 4 a.

The valve seat 7 is fixed inside the valve body 4, and a first through hole 7a and a second through hole 7b are opened on the valve seat 7, the first through hole 7a is a part of a flow passage formed between the first port 4b and the third port 4a, and the second through hole 7b is a part of a flow passage formed between the second port 4c and the third port 4 a. The first through hole 7a is located on the first flow passage, and the refrigerant can not flow through the first flow passage when the first through hole 7a is blocked, namely the refrigerant can not flow into and out of the electric valve through the first interface 4b and the third interface 4a after the first through hole 7a is blocked. The second through hole 7b is located on the second flow passage, and the refrigerant can not flow through the second flow passage when the second through hole 7b is blocked, namely the refrigerant can not flow into and out of the electric valve through the second port 4c and the third port 4a after the second through hole 7b is blocked.

Slider 6 also is located inside valve body 4, and sliding fit between slider 6 and the disk seat 7, can realize three kinds of states when slider 6 rotates for disk seat 7, and three kinds of states are respectively: the first through hole 7a is completely covered and the second through hole 7b communicates with the third port 4a, or both the first through hole 7a and a part of the second through hole 7b are covered, or the second through hole 7b is completely covered and the first through hole 7a communicates with the third port 4 a. The three states correspond to three working modes of the electric valve respectively, wherein the first working mode is that the slide block 6 rotates to completely cover the first through hole 7a, the second through hole 7b is communicated with the third interface 4a, and at the moment, the refrigerant flows through the second flow channel, namely the refrigerant flows through the second through hole 7b and enters and exits the electric valve through the second interface 4c and the third interface 4 a. The second working mode is that the sliding block 6 rotates to cover a part of the first through hole 7a and a part of the second through hole 7b at the same time, at the moment, the first flow channel and the second flow channel are both provided with refrigerants to flow through, the first through hole 7a and the second through hole 7b are both provided with refrigerants to flow through, the adjustment of the covered area of the first through hole 7a and the adjustment of the covered area of the second through hole 7b are realized by adjusting the rotating angle of the sliding block 6, and then the flow proportion adjustment of the first through hole 7a and the second through hole 7b is realized. In the third working mode, the slide block 6 rotates to completely cover the second through hole 7b, the first through hole 7a is communicated with the third interface 4a, and at the moment, the refrigerant flows through the first flow channel, namely, the refrigerant flows through the first through hole 7a and enters and exits the electric valve through the first interface 4b and the third interface 4 a.

Wherein the communication of the second through hole 7b with the third port 4a in the first mode includes both a case where a part of the second through hole 7b is covered and a case where the second through hole 7b is not covered at all. Similarly, the communication of the first through hole 7a with the third port 4a in the second mode includes both the case where a part of the first through hole 7a is covered and the case where the first through hole 7a is not covered at all.

The driving device 1 can drive the slide block 6 to rotate relative to the valve seat 7 so as to realize the switching of three working modes of the electric valve.

The first port 4b and the second port 4c may be inlets or outlets of electric valves, and similarly, the third port 4a may also be an inlet or outlet of an electric valve.

When the electric valve provided by the invention is applied, the driving device 1 is used for driving the sliding block 6 in the valve body 4 to rotate relative to the valve seat 7, so that the switching of three modes of enabling the refrigerant to flow through the first interface 4b and/or the second interface 4c is realized, the refrigerant flow path is changed, and the switching of the refrigeration and heating of the temperature adjusting equipment can be realized. The electric valve provided by the invention not only functionally replaces two electromagnetic valves, but also can realize the flow proportion regulation of the first through hole 7a and the second through hole 7b, so that the pipeline design of the temperature regulation equipment is simpler, the pipeline design is more compact, and the control strategy of the temperature regulation equipment is simplified.

The electric valve may further include a gear box 3, and the driving device 1 drives the slider 6 to rotate through the gear box 3. The driving device 1 can drive the gear box 3 to operate, that is, the driving device 1 drives the gear set 3f in the gear box 3 to rotate, and the gear set 3f rotates to drive the sliding block 6 to rotate. The driving device 1 can be a motor, and the output end 3e of the motor is meshed with a gear in the gear box 3 so as to realize the operation of driving the gear box 3 by the motor.

As shown in fig. 14 to 16, the gear case 3 includes a case body 3d, a stopper, and a gear set 3f provided in the case body 3d, the gear set 3f being provided in the case body 3 d.

Further, the limiting device comprises a first stop rod 3a and a second stop rod 3b, one gear in the gear set 3f is a stop gear matched with the first stop rod 3a and the second stop rod 3b, the stop gear can rotate anticlockwise to abut against the first stop rod 3a, and the stop gear can also rotate clockwise to abut against the second stop rod 3 b. The first and second stop levers 3a and 3b can prevent the stop gear from continuing to rotate. That is, the stop gear can not rotate counterclockwise any more after abutting against the first stop lever 3a, and can not rotate clockwise any more after abutting against the second stop lever 3 b.

The gear box 3 comprises at least one gear shaft 3c, the electric valve further comprises a valve cover 2 fixedly connected with the valve body 4, the top ends of the first stop rod 3a, the second stop rod 3b and/or the at least one gear shaft 3c can extend out of the box body 3d, the valve cover 2 is provided with an insertion hole 2a, and the parts of the first stop rod 3a, the second stop rod 3b and/or the at least one gear shaft 3c, which extend out of the box body 3d, can be clamped in the insertion hole 2a of the valve cover 2, so that the gear box 3 and the valve cover 2 are circumferentially fixed, and further the gear box 3 is prevented from integrally rotating. The length of the part of the first stopping rod 3a, the second stopping rod 3b and/or the at least one gear shaft 3c extending out of the box body 3d is 2-4mm, and a clamping protrusion is formed, and particularly, the length of the part of the first stopping rod 3a, the second stopping rod 3b and/or the at least one gear shaft 3c extending out of the box body 3d is 3mm, which is not limited herein.

The valve cover 2 is fixed on the valve body 4 by means of threads or a positioning pin.

In a preferred embodiment, a working boss 6b and a supporting boss 6a are arranged on one side of the sliding block 6 close to the valve seat 7, and the working boss 6b and the supporting boss 6a are in sliding fit with the valve seat. The rotation of the slide 6 relative to the valve seat 7 achieves that the working projection 6b completely covers the first through hole 7a, covers part of the first through hole 7a and part of the second through hole 7b, and completely covers the second through hole 7 b. The height of the working boss 6b and the support boss 6a is the same or approximately the same, i.e. the working boss 6b is flush with the support boss 6a, and the height of the projection of the working boss 6b and the support boss 6a is the same.

In the above embodiment, the working boss 6b and the supporting boss 6a are simultaneously tightly attached to the valve seat 7, and compared with the whole lower end face of the slider 6 tightly attached to the valve seat 7, the contact area between the valve seat 7 and the slider 6 is greatly reduced, so that the load of the slider 6 is reduced, and the slider 6 can be rotated by using a smaller motor.

As shown in fig. 6, specifically, the support boss 6a includes a plurality of strip-shaped bosses, and specifically, the support boss 6a may include two strip-shaped bosses symmetrically arranged along the length direction of the slider 6.

The working boss 6b may be a circular boss. Further, the radius of the circular boss is 1.6mm-2mm larger than the radius of the first through hole 7a and the second through hole 7 b. Of course, the size of the circular boss can be set according to practical situations, and is not limited herein.

The working projection 6b may also be of other shapes, such as a square projection, a profiled projection, etc. In order to buffer the refrigerant in the valve body 4, a cavity may be further disposed inside the valve body 4, and the first port 4b, the second port 4c, and the third port 4a are all communicated with the cavity, i.e., the refrigerant entering the electric valve may flow into the cavity first and then flow out through the ports. In particular, the cavity may start at the bottom of the valve body 4, without being limited thereto.

As shown in fig. 2-3, the electric valve further includes a positioning shaft 5 fixedly connected to the valve body 4 and the valve seat 7, the slider 6 is rotatably connected to the positioning shaft 5, the valve seat 7 is provided with a positioning hole 7c, and the positioning shaft 5 penetrates through the positioning hole 7c and is relatively fixed to the valve seat 7. The slide 6 rotates around the positioning shaft 5 to realize the switching of the three working modes of the electric valve. Specifically, the positioning shaft 5 may be interference-fitted with the valve body 4 and the valve seat 7.

In order to improve the stability of the valve seat 7, a pressing ring 8 can be arranged between the side wall of the valve seat 7 and the valve body 4, specifically, an annular groove can be formed in the side wall of the valve seat 7, the pressing ring 8 is arranged in the annular groove, and the valve seat 7 and the valve body 4 extrude the pressing ring 8 to realize the relative fixation of the valve seat 7 and the valve body 4.

Further, a damping sheet 9 is arranged between one side of the pressing ring 8, which is far away from the sliding block 6, and the valve seat 7 so as to reduce vibration.

As shown in fig. 8, in order to ensure that the slider 6 and the valve seat 7 are always tightly attached to each other, a blind hole 6e may be formed in a side of the slider 6 away from the valve seat 7, and a compression elastic member is disposed in the blind hole 6e, and acts to make the slider 6 always attached to the valve seat 7. The compression elastic component can offset one end with blind hole 6e diapire, and the other end offsets with gear box 3 to this realizes that compression elastic component elastic force effect makes slider 6 also can paste tight cooperation with disk seat 7 under the operating mode of low pressure or no pressure.

In the above embodiment, the compression elastic member may be a compression spring and a steel ball, the compression spring is integrally located in the blind hole 6e, and at least a part of the steel ball sinks into the blind hole 6 e. Of course, the compression spring may have other structures, and is not limited herein.

As shown in fig. 7-8, the side of the slide 6 facing away from the valve seat 7 is splined to the output end 3e of the gearbox 3. A groove hole 6d can be formed in one side, away from the valve seat 7, of the sliding block 6, the output end 3e of the gear box 3 is clamped in the groove hole 6d, and therefore the sliding block 6 is driven to rotate when the gear box 3 operates. The slide block 6 is further provided with a shaft hole 6c for the positioning shaft to pass through so as to realize the rotation of the slide block 6, and the shaft hole 6c can be arranged opposite to the slotted hole 6 d.

The slot 6d of the slider 6 may be a kidney-shaped hole, and the output end 3e of the gear box 3 is a kidney-shaped protrusion. Of course, the slot 6d of the sliding block 6 may also be a bar-shaped hole, and the output end 3e of the gear box 3 is a bar-shaped protrusion, which is not limited herein.

In another embodiment, the slider 6 is a ceramic slider and the valve seat 7 is a ceramic valve seat. Of course, the slider 6 and the valve seat may be made of other materials, and are not limited herein.

Based on the electrically operated valve provided in the above embodiment, the invention further provides a temperature adjusting device, which includes any one of the electrically operated valves in the above embodiments. Because the electrically operated valve in the above embodiment is adopted in the temperature adjusting device, please refer to the above embodiment for the beneficial effect of the temperature adjusting device.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrically operated valve, comprising:

the valve body (4), wherein a first interface (4b), a second interface (4c) and a third interface (4a) are formed in the valve body (4);

the valve seat (7) is fixed inside the valve body (4), a first through hole (7a) and a second through hole (7b) are formed in the valve seat (7), the first through hole (7a) is a part of a flow channel formed between the first port (4b) and the third port (4a), and the second through hole (7b) is a part of a flow channel formed between the second port (4c) and the third port (4 a);

slider (6), slider (6) are located inside valve body (4), sliding fit between slider (6) and disk seat (7), slider (6) can realize when rotating for disk seat (7): completely cover the first through hole (7a) and the second through hole (7b) communicates with the third interface (4a), or cover both a part of the first through hole (7a) and a part of the second through hole (7b), or completely cover the second through hole (7b) and the first through hole (7a) communicates with the third interface (4 a);

the driving device (1), the driving device (1) drives the sliding block (6) to rotate;

the electric valve further comprises a gear box (3), the driving device (1) drives the sliding block (6) to rotate through the gear box (3), the gear box (3) comprises a box body (3d), a limiting device and a gear set (3f), the gear box is arranged in the valve body, the limiting device comprises a first stop rod (3a) and a second stop rod (3b), one gear in the gear set (3f) is a stop gear matched with the first stop rod (3a) and the second stop rod (3b), the stop gear can rotate to abut against the first stop rod (3a), and the stop gear can rotate to abut against the second stop rod (3 b).

2. Electric valve according to claim 1, characterized in that the gear box (3) comprises at least one gear shaft (3c), the top end of the first stop rod (3a), the second stop rod (3b) and/or at least one gear shaft (3c) extends out of the box body (3d), the electric valve further comprises a valve cover (2) fixedly connected with the valve body (4), the valve cover (2) is provided with an insertion hole (2a), and the first stop rod (3a), the second stop rod (3b) and/or at least one gear shaft (3c) extending out of the box body (3d) are inserted into the insertion hole (2 a).

3. Electric valve according to claim 1, characterized in that the side of the slider (6) close to the valve seat (7) is provided with a working boss (6b) and a support boss (6a), both of which are in sliding fit with the valve seat, and that the slider (6) rotates to achieve that the working boss (6b) completely covers the first through hole (7a), or simultaneously covers part of the first through hole (7a) and part of the second through hole (7b), or completely covers the second through hole (7 b).

4. The electric valve according to claim 3, wherein the support boss (6a) comprises a plurality of bar-shaped bosses, and the working boss (6b) is a circular boss having a radius 1.6mm to 2mm larger than the radius of the first and second through holes (7a, 7 b).

5. The electric valve according to claim 1, characterised in that a cavity is arranged inside the valve body (4), and the first port (4b), the second port (4c) and the third port (4a) are all communicated with the cavity.

6. The electric valve according to claim 1, further comprising a positioning shaft (5) fixedly connected with the valve body (4) and the valve seat (7), wherein the slide block (6) is rotatably connected with the positioning shaft (5).

7. Electric valve according to claim 1, characterised in that a pressure ring (8) is arranged between the side wall of the valve seat (7) and the valve body (4), and a damping sheet (9) is arranged between the side of the pressure ring (8) remote from the slide (6) and the valve seat (7).

8. Electrically operated valve according to claim 1, characterised in that the side of the slider (6) facing away from the valve seat (7) is provided with a blind hole (6e), and in that a compression spring is arranged in the blind hole (6e), which compression spring acts to keep the slider (6) in abutment with the valve seat (7) at all times.

9. Electrically operated valve according to claim 1, characterised in that the side of the slider (6) facing away from the valve seat (7) is splined to the output end (3e) of the gearbox (3).