阅读说明：本技术 一种电子阀及其阀体结构 (Electronic valve and valve body structure thereof ) 是由 马俊 于 2019-01-07 设计创作，主要内容包括：本发明公开了一种电子阀,包括阀体组件、流量控制装置和动力装置,所述的阀体组件包括阀体,所述的阀体包括阀体上部和阀体下部,所述的阀体上部设有上端盖,所述的阀体下部设有接管和下端盖；所述的动力装置置于上端盖和阀体上部形成的空间内；所述的流量控制装置置于下端盖与阀体下部形成的空间内,其特征在于所述的阀体上部和阀体下部通过注塑一体成型。本发明结构设计合理,把阀体集成在一体开模成型,减少了零部件数量、阀体上下部装配的工艺以及产品零件的开模数量,降低了开发周期和研发费用；且产品的尺寸容易保证,重量也会降低,对于主机厂要求的轻量化、集成化目标,更容易实现。(The invention discloses an electronic valve which comprises a valve body assembly, a flow control device and a power device, wherein the valve body assembly comprises a valve body, the valve body comprises an upper valve body part and a lower valve body part, an upper end cover is arranged on the upper valve body part, and a connecting pipe and a lower end cover are arranged on the lower valve body part; the power device is arranged in a space formed by the upper end cover and the upper part of the valve body; the flow control device is arranged in a space formed by the lower end cover and the lower part of the valve body, and is characterized in that the upper part of the valve body and the lower part of the valve body are integrally formed through injection molding. The valve body is integrated into an integral die sinking and molding structure, so that the number of parts, the process of assembling the upper part and the lower part of the valve body and the die sinking number of product parts are reduced, and the development period and the research and development cost are reduced; and the size of the product is easy to guarantee, the weight is also reduced, and the light weight and integration target required by a host factory is easier to realize.)

1. An electronic valve comprises a valve body assembly, a flow control device and a power device, wherein the valve body assembly comprises a valve body, the valve body comprises an upper valve body part and a lower valve body part, an upper end cover is arranged on the upper valve body part, and a connecting pipe and a lower end cover are arranged on the lower valve body part; the power device comprises a motor, a gear train and a control panel and is arranged in a space formed by the upper end cover and the upper part of the valve body; the flow control device comprises a valve core and is arranged in a space formed by the lower end cover and the lower part of the valve body, and is characterized in that the upper part of the valve body and the lower part of the valve body are integrally formed by injection molding.

2. The electronic valve of claim 1, wherein a neck portion of the valve body is further provided between the upper portion and the lower portion of the valve body, and the neck portion is provided with a reinforcing rib.

3. The electronic valve of claim 2, wherein the ribs are radially disposed about a central axis of the valve core.

4. The electronic valve according to claim 2, wherein the number of the reinforcing ribs is 2-4, and the reinforcing ribs are uniformly distributed.

5. The electronic valve of claim 1, wherein a metal insert is further provided on a bottom of the lower portion of the valve body.

6. The electronic valve according to claim 5, wherein a mounting leg is further provided at a lower portion of the valve body, and the metal embedded part is embedded in a bottom portion of the mounting leg.

7. An electronic valve according to claim 6 wherein the number of mounting posts is 2 to 4.

8. The electronic valve of claim 1, wherein said valve body has a power unit receiving chamber at an upper portion thereof, said power unit receiving chamber further having ribs formed on a side wall thereof.

9. An electronic valve according to claim 1, wherein said ribs are from 1 to a plurality and are circumferentially disposed along a side wall of said power unit receiving cavity.

10. An electronic valve according to claim 1 wherein the rib is from 1 to a plurality of ribs parallel to the axis of the core.

11. An electronic valve according to claim 9 or 10, wherein the height of the rib is less than 1 mm.

12. An electronic valve according to any one of claims 1 to 10 wherein two sealing rings are provided between the valve body and the valve body, said two sealing rings being spaced up and down along the axial direction of the valve body.

13. A valve body structure of an electronic valve is characterized in that the valve body is integrally formed by injection molding; a section of valve body necking part is arranged between the upper part of the valve body and the lower part of the valve body, and a group of reinforcing ribs are arranged on the necking part; the bottom of the lower part of the valve body is also provided with a metal embedded part for installing an electronic valve; the upper portion of the valve body is provided with a power device accommodating cavity, and the side wall of the power device accommodating cavity is further provided with a convex edge.

Technical Field

The invention relates to the technical field of new energy automobiles, in particular to the field of electronic valve products used in a thermal management system of a new energy automobile, and specifically relates to an electronic valve and a valve body structure thereof in an automobile waterway system.

Background

The performance and quality of pure electric vehicles and hybrid electric vehicles, which use batteries as power sources, depend on the performance of the power battery packs. Therefore, battery thermal management must be performed on the power battery to ensure that the working temperature of the power battery is in a better range.

Fig. 1 is a schematic diagram of a current new energy battery liquid cooling and heating system. The automobile air conditioner consists of a compressor, a condenser, an expansion valve and an evaporator, and forms a refrigerant loop. Because the new energy automobile needs to carry out thermal management on the battery, a battery deep cooler is generally connected with the evaporator in parallel on an air conditioning loop. The cooling liquid loop is composed of an electronic water pump, a low-temperature water tank, a battery deep cooler, a heater and a water cooling plate. The heat that the battery during operation produced transmits to the water-cooling board, transmits the coolant liquid again, and the medium in two return circuits carries out heat exchange in the battery deep-cooling ware and cools down the battery. The electronic valve is used for controlling the flow direction and the flow rate of the cooling liquid loop.

Referring to fig. 2 and 3, the conventional electronic valve includes a valve body assembly, a flow control device, and a power device. The valve body assembly comprises a valve body, an upper end cover, a lower end cover and a connecting pipe. The valve body comprises an upper valve body part 6 'and a lower valve body part 5'. The upper part 6 'of the valve body is provided with an upper end cover 1'; the lower part 5 ' of the valve body is provided with a connecting pipe 3 ' and a lower end cover (positioned at the bottom of the lower part 5 ' of the valve body and not shown in the figure); the upper valve body part 6 ' and the lower valve body part 5 ' are connected by a support 7 '. The power device comprises a gear train, a motor and a control panel and is arranged in a space formed by the upper end cover 1 'and the upper part 6' of the valve body. The flow control device comprises a valve core 10 'and a sealing element and the like, and is arranged in a space formed by a lower end cover and the lower part 5' of the valve body. An external control signal is input to a control panel of the power device to drive the motor to work, and the motor drives the gear train to rotate to transmit power to an output gear of the gear train; the output gear shaft is matched with a valve core 10 ' of the flow control device to drive the valve core 10 ' to rotate, a flow channel is arranged in the valve core 10 ', and the flow channel between the valve core and the valve body is switched through the change of the angle of the valve core, so that the flow direction and the flow rate of a cooling liquid loop in the new energy cooling system are controlled.

The electronic valve with the structure has the following defects because the upper valve body part 6 'and the lower valve body part 5' are separated parts:

1. the assembly is assembled by the upper part of the valve body and the lower part of the valve body, so that the high coaxiality of the valve core shaft and the output gear shaft is difficult to guarantee, if the coaxiality precision cannot be guaranteed during assembly, the power transmission efficiency can be reduced, and the rotary clamping can be caused to cause the failure of the electronic valve.

2. The electronic valve structure assembled on the upper part and the lower part of the valve body needs to be respectively provided with a die for connecting the upper part and the lower part of the valve body and a middle connecting bracket, so that the die cost and the part cost are higher.

3. When the upper part and the lower part of the valve body are assembled, the bracket 7 ' and the lower part 5 ' of the valve body are fixed through one group of screws, and then the connecting column 8 ' of the bracket and the upper part 6 ' of the valve body are fixed through the other group of screws 2 ', so that the number of parts is large, the assembly is complex, and the manufacturing cost is high.

4. When multiple components are combined, the contact parts of the components are easy to cause poor sealing. The adjacent parts need to be sealed through the sealing rings, and further the part number and the manufacturing cost of the product are increased.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, and provides an electronic valve with an integrated valve body, which solves the matching problem of a control device and a power device and reduces the product cost.

In order to solve the problems, the invention adopts the following technical scheme: an electronic valve comprises a valve body assembly, a flow control device and a power device, wherein the valve body assembly comprises a valve body, the valve body comprises an upper valve body part and a lower valve body part, an upper end cover is arranged on the upper valve body part, and a connecting pipe and a lower end cover are arranged on the lower valve body part; the power device comprises a motor, a gear train and a control panel and is arranged in a space formed by the upper end cover and the upper part of the valve body; the flow control device comprises a valve core and is arranged in a space formed by the lower end cover and the lower part of the valve body, and is characterized in that the upper part of the valve body and the lower part of the valve body are integrally formed by injection molding.

The electronic valve has reasonable structural design, integrates the upper part and the lower part of the valve body into a whole, and is formed by opening the die, so that the number of parts of the electronic valve product is reduced, the process of assembling the upper part and the lower part of the valve body is reduced, the number of opening the die of product parts is reduced, the development cycle of the product is greatly reduced, and the research and development cost of the product is reduced; and integral type electronic valve through mould integrated into one piece, the size of product also can guarantee more easily, and the weight of whole product also can reduce simultaneously, to the lightweight of host computer factory requirement, integrate the target, realize more easily.

As an improvement of the invention, a section of valve body necking part is arranged between the upper part and the lower part of the valve body, and the necking part is provided with a reinforcing rib, so that the strength of the valve body can be greatly improved under the condition of not increasing the size and the wall thickness of the valve body.

The structure and shape of the reinforcing rib are not limited, so that the purpose can be achieved. Preferably, the strengthening rib use the dabber of case as the center and be radial setting, the quantity is preferably 2~4, a plurality of strengthening ribs are the equipartition setting.

As a further improvement of the invention, the bottom of the lower part of the valve body is also provided with a metal embedded part. Preferably, the lower part of the valve body is also provided with a mounting foot, and the bottom of the mounting foot is embedded in the metal embedded part. The metal embedment is used to mount the electronic valve of the present invention to a corresponding part of an automobile. Different from the prior art that the side surface of the valve body is installed, the invention adopts bottom surface installation, thereby not only being convenient to operate, but also being capable of more reasonably utilizing the space in the vehicle. The metal embedded parts are of nut or bolt structures, and the number of the metal embedded parts and the number of the corresponding mounting feet are preferably 2-4.

As a further improvement of the invention, the upper part of the valve body is provided with a power device accommodating cavity, and the side wall of the power device accommodating cavity is also provided with a convex rib. Because the invention adopts an integrated valve body structure, a local weak area is possibly formed on the upper part of the valve body during demoulding, so that a plastic part is cracked. The convex edge can increase the adhesive force between the material and the mold during injection molding, plays a role in enhancing and can increase the qualification rate of demolding.

As a further improvement of the invention, the number of the convex ribs is 1 to a plurality of the convex ribs, and the convex ribs are circumferentially arranged along the side wall of the power device accommodating cavity. The ribs may be disposed around the side walls of the power unit receiving cavity 214, closed or in multiple spaced-apart sections.

As an alternative embodiment, the rib is arranged parallel to the core axis of the valve core.

As another alternative, the inner wall of the upper part of the valve body is provided with a circumferential rib and an axial rib at the same time.

In order to facilitate demoulding, the height of the convex edge is not too large, preferably less than 1mm, and demoulding can be realized in a forced demoulding manner under the condition of not increasing the difficulty of a mould.

As a further improvement of the invention, a first sealing ring is arranged between the valve core and the valve body to separate the flow control device accommodating cavity at the lower part of the valve body from the power device accommodating cavity at the upper part of the valve body; and a second sealing ring groove is also arranged above the first sealing ring, and the first sealing ring and the second sealing ring groove are arranged at intervals up and down along the axial direction of the valve core. After the electronic valve is used for a long time, particularly, the friction corrosion of the valve core and the valve body to the sealing surface is obvious, the sealing ring is likely to be unreliable in sealing after being subjected to the friction corrosion, and the cooling liquid in the valve body is likely to leak, so that the electronic valve is caused to lose efficacy. When the first sealing ring can meet the sealing requirement, the second sealing ring groove is vacant. On the contrary, if the first sealing ring can not ensure the sealing performance of the electronic valve, a second sealing ring is arranged in the second sealing ring groove. After the double seal is adopted, the sealing effect of the electronic valve can be greatly enhanced, the reliability of the product can be improved, and the service life can be prolonged. Because the invention adopts an integrated valve body structure, a sealing ring is not required to be arranged between the upper part and the lower part of the valve body, and the integral sealing effect of the electronic valve is improved under the condition of not increasing the number of the sealing rings.

As a still further improvement of the invention, the injection molding material used for the valve body includes but is not limited to PA, PPA or PPS material.

As a still further improvement of the invention, the power device comprises a motor, a gear train and a control board, and the motor can be a direct current motor or a stepping motor. The gears in the gear train can be made of plastic or metal.

The invention also provides a valve body structure of the electronic valve, the valve body comprises a valve body upper part and a valve body lower part, the valve body upper part is connected with an upper end cover, the valve body lower part is connected with a lower end cover and a connecting pipe, and the electronic valve is characterized in that the valve body is integrally formed by injection molding; a section of valve body necking part is arranged between the upper part of the valve body and the lower part of the valve body, and a group of reinforcing ribs are arranged on the necking part; the bottom of the lower part of the valve body is also provided with a metal embedded part for installing an electronic valve; the upper portion of the valve body is provided with a power device accommodating cavity, and the side wall of the power device accommodating cavity is further provided with a convex edge.

Drawings

The invention is further illustrated by the following figures and examples.

Fig. 1 is a schematic diagram of a new energy battery liquid cooling and heating system loop.

Fig. 2 is a schematic structural view of a conventional electronic valve.

FIG. 3 is a schematic view of a prior art electronic valve body lower portion and bracket assembly.

Fig. 4 is an exploded view of the electronic valve of the present invention.

Fig. 5 is an exploded view of the valve body structure of the electronic valve of the present invention.

Fig. 6 is a perspective view of the valve body structure of the electronic valve of the present invention.

Fig. 7 is a schematic view showing the structure of the bottom of the valve body of the electronic valve of the present invention.

FIG. 8 is a schematic diagram of an embodiment of an electronic valve with a circumferential rib structure of the present invention.

Fig. 9 is an enlarged view of fig. 8 at a.

FIG. 10 is a schematic diagram of an embodiment of an electronic valve with an axial rib structure according to the present invention.

Fig. 11 is an enlarged view of fig. 10 at B.

Fig. 12 is a schematic structural view of an embodiment of a double sealing structure of the electronic valve of the present invention.

In the figure, 1-the flow control device, 2-the valve body assembly, 3-the power device, 4-the first seal ring groove, 5-the second seal ring groove;

101-valve core, 102-flow channel;

201-upper part of valve body, 202-lower part of valve body, 203-connecting pipe, 204-neck part of valve body, 205-reinforcing rib, 206-upper end cover, 207-lower end cover, 208-shock pad, 209-metal embedded part, 210-convex rib, 211-convex ring, 212-mounting foot, 214-power device accommodating cavity, 215-side wall of power device accommodating cavity;

301-motor, 302-gear train, 303-control board.

Detailed Description

Fig. 2 and 3 are schematic structural diagrams of a conventional electronic valve, and the defects thereof have been described above and are not described again.

In the description of the present invention, directions or positions indicated by "upper", "lower", "left", "right", "top", "bottom", etc. are based on directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 4, an electronic valve of the present invention includes a valve body assembly 2, a flow control device 1, and a power device 3.

The valve body assembly 2 comprises a valve body, the valve body comprises a valve body upper part 201 and a valve body lower part 202, the valve body upper part 201 is provided with an upper end cover 206, and the valve body lower part 202 is provided with a connecting pipe 203 and a lower end cover 207.

The power device 3 comprises a motor 301, a gear train 302 and a control panel 303 and is arranged in a space formed by the upper end cover 206 and the upper part 201 of the valve body; the flow control device 1 comprises a valve core 101, a flow passage 102 is arranged in the valve core 101, and the valve core 101 is arranged in a space formed by a lower end cover 207 and a lower part 202 of a valve body.

Referring to fig. 5, the upper valve body part 201 and the lower valve body part 202 are integrally formed by injection molding. The adapter 203 is welded to the coolant passage of the lower valve body 202 by ultrasonic or laser welding. The number of the connecting pipes 203 is not less than 2, and the connecting pipes are determined according to the function and design requirements of the product. It is also possible to provide a plurality of connection pipe connection ports 213 in the lower part 202 of the valve body, and when the number of connection pipes 203 is smaller than the number of connection ports 213, the unused connection pipe connection ports 213 are blocked by plugs, so that the valve body can be designed as a universal module.

Referring to fig. 6, a section of valve body necking part 204 is further arranged between the valve body upper part 201 and the valve body lower part 202, and the necking part 204 is provided with a reinforcing rib 205, so that the strength of the valve body can be greatly improved under the condition that the size and the wall thickness of the valve body are not increased.

The reinforcing rib 205 is not limited in structure and shape, and is preferably used for achieving the purpose. Preferably, the reinforcing ribs 205 are radially arranged by taking a mandrel of the valve core as a center, and the number of the reinforcing ribs is preferably 2-4. In this embodiment, the number of the reinforcing ribs 205 is four, and the four reinforcing ribs are uniformly distributed in the radial direction.

Referring to fig. 7, a metal embedded part 209 is also arranged at the bottom of the lower part 202 of the valve body. Preferably, the valve body lower part 202 is further provided with a mounting leg 212, and the metal embedded part 209 is embedded with the bottom of the mounting leg 212. The metal embedment 209 is used to mount the electronic valve of the present invention to the corresponding part of the automobile. Different from the prior art that the side surface of the valve body is installed, the invention adopts bottom surface installation, thereby not only being convenient to operate, but also being capable of more reasonably utilizing the space in the vehicle. The metal embedded parts 209 are in a nut or bolt structure, preferably, the number of the metal embedded parts 209 and the number of the corresponding mounting feet 212 are 2-4, and in the embodiment, the number of the metal embedded parts 209 is four. The bottom of the lower portion 202 of the valve body is also provided with a shock absorbing pad 208. The shock absorbing pad 208 has a ring structure. The material of the shock absorbing pad 208 includes but is not limited to EPDM rubber.

Referring to fig. 8 and 9, the upper portion 201 of the valve body has a receiving cavity 214 for receiving the power unit 3, and a rib 210 is further provided on a sidewall of the receiving cavity 214 of the power unit. Because the invention adopts an integrated valve body structure, a local weak area is possibly formed on the upper part of the valve body during demoulding, so that a plastic part is cracked. The convex edge can increase the adhesive force between the material and the mold during injection molding, plays a role in enhancing and can increase the qualification rate of demolding.

The number of the ribs 210 is 1 to several, and the ribs are circumferentially arranged along the side wall of the power device accommodating cavity 214. The ribs 210 may be disposed around the side walls of the power unit receiving cavity 214, closed or in multiple spaced-apart sections.

Referring to fig. 10 and 11, another arrangement of the ribs 210 is described. In the present embodiment, the rib 210 is disposed parallel to the core axis of the valve body 101. The number of the ribs 210 may be 1 or more. Preferably, the plurality of ribs 210 are uniformly distributed on the sidewall of the device receiving chamber 214.

Alternatively, the sidewall of the device receiving cavity 214 may be provided with both circumferential ribs and axial ribs.

For convenience of demolding, the height of the convex rib is not too large, and is preferably less than 1 mm. In the present embodiment, the height of the rib is 0.8 mm.

Referring to fig. 12, a first seal ring 4 and a second seal ring groove 5 are provided between the valve body 101 and the valve body upper portion 201. The first sealing ring 4 and the second sealing ring groove 5 are arranged at intervals up and down along the axial direction of the valve core. When the first seal ring 4 cannot ensure the sealing performance of the electronic valve, a second seal ring is placed in the second seal ring groove 5. After the double seal is adopted, the sealing effect of the electronic valve can be greatly enhanced, the reliability of the product can be improved, and the service life can be prolonged. Because the invention adopts an integrated valve body structure, a sealing ring is not required to be arranged between the upper part 201 of the valve body and the lower part 202 of the valve body, and the integral sealing effect of the electronic valve is improved under the condition of not increasing the number of the sealing rings.

The injection molding material used for the valve body includes but is not limited to PA, PPA or PPS material.

The motor of the power device can be a direct current motor or a stepping motor. The gears in the gear train can be made of plastic or metal, and the number of the gears is not less than 2.

The electronic valve has reasonable structural design, integrates the upper part and the lower part of the valve body into a whole, and is formed by opening the die, so that the number of parts of the electronic valve product is reduced, the process of assembling the upper part and the lower part of the valve body is reduced, the number of opening the die of product parts is reduced, the development cycle of the product is greatly reduced, and the research and development cost of the product is reduced; and integral type electronic valve through mould integrated into one piece, the size of product also can guarantee more easily, and the weight of whole product also can reduce simultaneously, to the lightweight of host computer factory requirement, integrate the target, realize more easily.

It should be understood that: the above-mentioned embodiments are merely illustrative of the present invention, not restrictive, and any invention which does not depart from the spirit and scope of the present invention will fall within the protection scope of the present invention.