CN110630754A

CN110630754A - Fluid control valve

Info

Publication number: CN110630754A
Application number: CN201810656305.6A
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: 2018-06-24
Filing date: 2018-06-24
Publication date: 2019-12-31

Abstract

The invention provides a fluid control valve, which comprises a valve body, a thermal element and a spring, wherein a cavity is formed in the valve body, at least part of the thermal element is positioned in the cavity, the fluid control valve also comprises a first channel, a second channel and a valve port part, the valve port part is provided with a valve port, the first channel is communicated with the cavity, the first channel can be communicated with the second channel through the valve port, the thermal element comprises a body and a valve rod, the body is abutted against the spring, the valve rod is abutted against the valve body, the flow control valve is also provided with a channel which is juxtaposed with the valve port, one end of the channel is communicated with the cavity, the other end of the channel is communicated with the second channel, the flow rate of the channel is far smaller than the flow rate of the valve port, when the body is abutted against the valve port part, the body blocks the valve port. Through set up above-mentioned fluid control valve in automotive transmission lubricating oil cooling system, can realize the fast intensification of gearbox lubricating oil.

Description

Fluid control valve

Technical Field

The invention relates to the technical field of fluid control, in particular to a fluid control valve.

Background

The automobile gearbox lubricating oil mainly realizes the temperature regulation function through a temperature control flow path consisting of a temperature regulation valve and an external cooling heat exchange device. When the automobile is started, particularly in a low-temperature environment, the lubricating oil of the gearbox needs to be heated so as to keep the lubricating oil of the gearbox at a proper working temperature.

Generally, hot cooling liquid of an engine is used for heating lubricating oil of a gearbox, but in a low-temperature environment, when an automobile is started, the temperature of the cooling liquid of the engine is also lower, and at the moment, the cooling liquid enters a heat exchanger to take away a large amount of heat of the lubricating oil of the gearbox, so that the temperature rise of the lubricating oil of the gearbox is too slow.

Disclosure of Invention

In order to solve the above problems, the present invention provides a fluid control valve, including a valve body, a thermal element, and a spring, wherein a chamber is formed in the valve body, at least a portion of the thermal element is located in the chamber, the fluid control valve further includes a first channel, a second channel, and a valve port, the valve port is provided with a valve port, the first channel is communicated with the chamber and can be communicated with the second channel through the valve port, the thermal element includes a body and a valve rod, the body is abutted against the spring, the valve rod is abutted against the valve body, the flow control valve is further provided with a channel juxtaposed to the valve port, one end of the channel is communicated with the chamber, the other end of the channel is communicated with the second channel, a flow rate of the channel is much smaller than a flow rate of the valve port, when the body is abutted against the valve port, the body blocks the valve port, and the second passage is communicated with the first passage through the passage and the valve chamber.

The channel is positioned at the valve port part, the channel is sunken in the inner wall corresponding to the valve port, and the number of the channels is more than or equal to 1.

The valve body includes first valve body and second valve body, the one end of second valve body with first valve body fixed connection, and the junction is sealed to be set up, first valve body includes first passageway and connecting portion, the valve body that the cavity corresponds is located between first passageway and the connecting portion the cavity is close to one side of first passageway, the interior wall portion of first valve body is formed with first shoulder, connecting portion include connecting portion minor diameter portion and connecting portion major diameter portion, connecting portion minor diameter portion is close to relatively the cavity, the interior wall portion of first valve body is in the junction of connecting portion minor diameter portion and connecting portion major diameter portion is formed with the second shoulder.

One end of the valve rod extends into the body, the body comprises a body large-diameter part and a body small-diameter part, the body large-diameter part is provided with a first end wall part on one side far away from the body small-diameter part, a second end wall part is arranged on one side close to the body small-diameter part, and the first end wall part is matched with the valve port part.

The spring is provided with a small end part and a large end part, the spring is sleeved on the body, the small end part is abutted against the second end wall part, the large end part is abutted against the first shoulder part, and the outer diameter of the large end part is the same as the inner diameter of the valve body corresponding to the cavity.

The second valve body comprises a tubular body, the second channel is arranged inside the tubular body, the tubular body comprises a first port portion and a second port portion, the valve port portion is formed on the inner circumferential face portion of the first port portion, a first annular protrusion is arranged near the first port portion, a first annular groove is arranged between the first port portion and the first annular protrusion, the first port portion extends into the connecting portion small-diameter portion, the first port portion is in clearance fit with the connecting portion small-diameter portion, the first annular protrusion is in clearance fit with the connecting portion large-diameter portion, the first annular protrusion is abutted to the second shoulder portion, and a sealing ring is further arranged in the first annular groove.

The channel comprises a through hole arranged at the first port part, one end of the through hole is communicated with the second channel, and the other end of the through hole is communicated with the cavity; or the channel is disposed at the body major diameter portion.

The second valve body further comprises a valve rod seat, the valve rod seat is located in the second channel, the valve rod seat comprises a blind hole portion and a communicating hole, the communicating hole is communicated with the channels on two sides of the valve rod seat, a blind hole is formed in the blind hole portion, one end of the valve rod extends into the blind hole, the valve rod is in clearance fit with the blind hole, the valve rod is abutted to the bottom of the blind hole, and the valve rod seat is fixedly connected with the tubular body or is in an integrated structure with the tubular body.

The fluid control valve further comprises a clamp spring, and the clamp spring comprises a body, a first branch part and a second branch part;

the circumference face portion of connecting portion major diameter portion is provided with first through-hole, second through-hole, third through-hole and fourth through-hole, first branch portion passes second through-hole and third through-hole, the second branches the portion and passes first through-hole and fourth through-hole, first branch portion and second branch position in the both sides of tubulose body, first branch portion and second branch maximum distance between the portion is less than the bellied external diameter of first annular, first annular arch is located the second shoulder with between the jump ring, just first branch portion and second branch portion with the bellied looks butt of first annular.

The inner peripheral surface part of the connecting part large-diameter part is provided with a first plane part between the third through hole and the fourth through hole, the first plane part can extend from one end to the other end of the inner peripheral surface part of the connecting part large-diameter part, or at least one part of the inner peripheral surface part of the connecting part large-diameter part is provided with a plane structure;

the second valve body is provided with a second flat part on one side of the tubular body, and when the second valve body is connected with the connecting part, the first flat part is matched with one end of the second flat part.

Through set up above-mentioned fluid control valve in motor transmission lubricating oil cooling system, when gearbox lubricating oil need heat, microthermal coolant liquid can only carry out the microcirculation, can avoid microthermal coolant liquid to flow into the heat exchanger in a large number and carry out the heat exchange with lubricating oil and take away the heat of lubricating oil, also can guarantee the very fast intensification of coolant liquid, make the faster settlement temperature that reaches of coolant liquid, when the coolant liquid reaches the settlement temperature, the fluid control valve opens completely, the coolant liquid of a large amount of heat gets into the heat exchanger and heats gearbox lubricating oil, can realize the very fast intensification of gearbox lubricating oil.

Drawings

FIG. 1 is a schematic perspective view of a fluid control valve according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the fluid control valve of FIG. 1;

FIG. 3 is a schematic front view of a second valve body in the fluid control valve of FIG. 1;

FIG. 4 is a perspective view of the second valve body shown in FIG. 3;

FIG. 5 is a perspective view of the second valve body of FIG. 4 from another perspective;

FIG. 6 is an axial schematic view of the second valve body of FIG. 5;

FIG. 7 is a schematic perspective view of a first valve body of the fluid control valve of FIG. 1;

FIG. 8 is a schematic perspective view of the fluid control valve of FIG. 1 from another perspective;

fig. 9 is a perspective view of a circlip in the fluid control valve of fig. 1.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 to 9 show a fluid control valve of the present embodiment, which includes a valve body including a first valve body 1 and a second valve body 2, a thermal element 3, a spring 4, and a snap spring 5. One end of the second valve body 2 is fixedly connected with the first valve body 1, and the joint is arranged in a sealing manner. As shown in fig. 2, the first valve body 1 includes a first passage 9 and a connecting portion 10, the valve body is further provided with a chamber 8, the valve body corresponding to the chamber 8 is located between the first passage 9 and the connecting portion 10, and a first shoulder 15 is formed on an inner wall portion of the first valve body 1 at a side of the chamber 8 close to the first passage 9.

The connecting portion 10 includes a connecting portion small diameter portion 11 and a connecting portion large diameter portion 12, the connecting portion small diameter portion 11 is relatively close to the chamber 8, and the inner wall portion of the first valve body 1 is formed with a second shoulder portion 16 at the junction of the connecting portion small diameter portion 11 and the connecting portion large diameter portion 12.

As shown in fig. 2, at least a portion of the thermal element 3 is accommodated in the chamber 8, the thermal element 3 includes a body 32 and a valve stem 34, the body 32 includes a large body diameter portion 31 and a small body diameter portion 33, the thermal element 3 is filled with a heat sensitive substance, one end of the valve stem 34 extends into the body 32, the heat sensitive substance can generate a volume change along with a temperature change, and the volume change of the heat sensitive substance pushes the valve stem 34 to move, so that the valve stem 34 can be driven to move relative to the body 32, or the body 32 moves relative to the valve stem 34.

The body large diameter portion 31 has a first end wall portion 35 on a side away from the body small diameter portion 33, and a second end wall portion 36 on a side close to the body small diameter portion 33, the first end wall portion 35 being fitted to one end of the second valve body 2.

The form of the spring 4 is not specifically limited, in this embodiment, the spring 4 is a conical spring, the spring 4 has a small end portion 401 and a large end portion 402, the spring 4 is sleeved on the body 32, the small end portion 401 abuts against the second end wall portion 36, the large end portion 402 abuts against the first shoulder portion 15, the outer diameter of the large end portion 402 is substantially the same as the inner diameter of the valve body corresponding to the chamber 8, the inner wall portion of the valve body corresponding to the chamber 8 can play a role in limiting, the spring 4 is prevented from being displaced and cannot normally work, and similarly, the spring 4 is sleeved on the body 32 in a manner of also playing a role in limiting. The spring 4 is in a compressed state, and the first end wall portion 35 is held in contact with one end of the second valve body 2 by the elastic force of the spring 4 until the temperature of the first fluid reaches the set temperature.

As shown in fig. 3-6, the second valve body 2 comprises a tubular body, a second channel 100 is arranged inside the tubular body, the tubular body comprises a first port 25 and a second port 26, in this embodiment, the tubular body is provided with a first annular protrusion 27 near the first port 25, a first annular groove 29 is arranged between the first port 25 and the first annular protrusion 27, and the first port 25 can extend into the connecting portion small diameter portion 11. The tubular body is provided with a second annular projection 28 near the second port portion 26 and a second annular groove 30 between the second port portion 26 and the second annular projection 28.

When the second valve body 2 is connected and matched with the first valve body 1, the first port part 25 of the second valve body 2 extends into the connecting part 10, the first port part 25 is in clearance fit with the small-diameter part 11 of the connecting part, a sealing ring is arranged between the first port part 25 and the small-diameter part 11 of the connecting part, the first annular bulge 27 is in clearance fit with the large-diameter part 12 of the connecting part, and the first annular bulge 27 is abutted to the second shoulder part 16; a portion of the sealing ring may be received in the first annular groove 29, and the sealing ring may provide a seal at the junction of the second valve body 2 and the first valve body 1.

The inner circumferential surface of the first port portion 25 is formed with a valve port portion 37, the valve port portion 37 is engaged with the first end wall portion 35 of the thermal element 3, and the valve port portion 37 is provided with a valve port 45. The valve port 37 is further provided with a channel parallel to the valve port 45, and it should be noted here that the channel parallel to the valve port 45 means that the channel can also communicate the chamber 8 and the second channel 100, the number of the channels is greater than or equal to 1, in the present embodiment, the channel is a substantially square groove 38, the groove 38 is recessed in an inner wall corresponding to the valve port 45, when the first end wall portion 35 of the thermal element 3 is in abutting engagement with the valve port portion 37, the valve port 45 is blocked, the groove 38 communicates with the chamber 8 and the second channel 100 in the second valve body 2, the flow rate of the groove 38 is much smaller than that of the valve port 45, and the specific flow rate of the groove 38 is determined by the system and is not limited specifically here.

By providing the fluid control valve in the lubricating oil cooling system of the automobile gearbox, when the automobile is started, before the coolant does not reach the set temperature, the heat-sensitive substance of the thermal actuator 3 contracts or is in a relatively contracted state, the valve rod 33 retracts towards the body 32, correspondingly the body 32 moves towards the first port part 25 until the first end wall part 35 is in contact with the valve port part 37, at the moment, the second channel 100 is communicated with the first channel 9 through the groove 38 and the valve chamber 8, the coolant can carry out microcirculation, the microcirculation can avoid the heat of the low-temperature coolant entering the gearbox lubricating oil of the heat exchanger in a large amount and can ensure the quick temperature rise of the coolant, so that the coolant can reach the set temperature more quickly, when the temperature of the coolant reaches the set temperature, the heat-sensitive substance of the thermal actuator 3 is heated and expands, and the body 32 moves towards the first channel 9 until the first end wall part 35 is separated from the valve port part 37 and the valve port 45 is, and a large amount of hot cooling liquid enters the heat exchanger to heat the lubricating oil of the gearbox, so that the lubricating oil of the gearbox is quickly heated.

It should be noted here that the channels may also be provided as through-holes, one end of which communicates with the second channel 100 and the other end communicates with the chamber 8; it should also be noted here that the passage may also be provided in the body large diameter portion 31.

The second valve body 2 further includes a valve stem seat 22, the valve stem seat 22 is located in the second passage 100, the form of the valve stem seat 22 is not particularly limited, in this embodiment, the valve stem seat 22 includes a blind hole portion 23 and a communication hole 24, the communication hole 24 communicates with the passages on both sides of the valve stem seat 22, the blind hole portion 23 is provided with a blind hole, the valve stem seat 22 is fixedly connected with the tubular body, and the valve stem seat 22 and the tubular body may also be an integral structure.

One end of the valve rod 34 extends into the blind hole, the valve rod 34 and the blind hole are in clearance fit, the valve rod 34 is abutted against the bottom of the blind hole, and therefore the limiting of the valve rod 34 is achieved, and when the thermosensitive material expands or contracts, the other end of the valve rod 34 drives the body 32 to be far away from or close to the first end opening portion 25.

As shown in fig. 7, the circumferential surface of the large diameter portion 12 of the connecting portion is provided with a first through hole 17, a second through hole 18, a third through hole 19 and a fourth through hole 20, and the snap spring 5 is installed by being matched with the first through hole 17, the second through hole 18, the third through hole 19 and the fourth through hole 20, so that the first valve body 1 and the second valve body 2 can be fixedly connected, and the installation mode is simple and convenient to detach.

As shown in fig. 7, the inner peripheral surface of the connecting portion large diameter portion 12 is provided with a first plane portion 21 between the third through hole 19 and the fourth through hole 20, the first plane portion 21 may extend from one end to the other end of the inner peripheral surface of the connecting portion large diameter portion 12, or at least a part of the inner peripheral surface of the connecting portion large diameter portion 12 is provided in a planar structure, the first plane portion 21 is engaged with the second valve body 2 to prevent relative rotation between the second valve body 2 and the first valve body 1, the first plane portion 21 may be square or circular, and the first plane portion 21 may be provided to limit the position.

As shown in fig. 5 and 6, a plurality of ribs 39 are further provided between the first annular protrusion 27 and the second annular protrusion 28, in this embodiment, the number of the ribs 39 is 6, the first annular protrusion 27 and the second annular protrusion 28 are fixedly connected by the ribs 39, the ribs 39 are symmetrically provided at both sides of the tubular body of the second valve body 2, and by symmetrically providing the ribs 39, uniform stress on the second valve body 2 can be achieved, strength of the second valve body 2 is increased, and thus, the service life of the second valve body 2 is prolonged.

The reinforcing rib 39 is fixedly connected with the tubular body at one side close to the tubular body, the height of the reinforcing rib 39 in the radial direction is not larger than the height of the first annular bulge 27 and the second annular bulge 28 in the radial direction, and the reinforcing rib 39, the tubular body, the first annular bulge 27 and the second annular bulge 28 can be of an integral structure.

The three reinforcing ribs 39 on the side of the tubular body are located on the same plane or nearly the same plane at the end face of the end remote from the tubular body, the first annular projection 27 is provided with a first platform 40 at the intersection with the plane, the second annular projection 28 is provided with a second platform 41 at the intersection with the plane, and the end surface of the first platform part 40 and the end surface of the second platform part 41 are located on the same plane as the plane, an imaginary plane part formed by the first platform part 40, the second platform part 41 and one end of the reinforcing rib 39 is defined as a second plane part 42, and when the second valve body 2 is connected to the connecting part 10, as shown in fig. 8, the first plane part 21 is engaged with one end of the second plane part 42, which can play a role of limiting, in the use, can prevent to take place relative rotation between second valve body 2 and the first valve body 1 to avoid causing the wearing and tearing inefficacy of sealing washer because of long-term relative rotation.

As shown in fig. 9, which is a schematic perspective view of the snap spring 5, the snap spring 5 is substantially U-shaped, and includes a body 50, a first branch portion 51 and a second branch portion 52, the first branch portion 51 passes through the second through hole 18 and the third through hole 19, the second branch portion 52 passes through the first through hole 17 and the fourth through hole 20, the first branch portion 51 and the second branch portion 52 are located at two sides of the tubular body, a maximum distance between the first branch portion 51 and the second branch portion 52 is smaller than an outer diameter of the first annular protrusion 27, the first annular protrusion 27 is located between the second shoulder portion 16 and the snap spring 5, and the first branch portion 51 and the second branch portion 52 are abutted against the first annular protrusion 27. So set up, can realize the firm connection of the one end of second valve body 2 and first valve body 1, and the dismouting of being convenient for.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted for those skilled in the art, and all technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. A fluid control valve comprises a valve body, a thermal element and a spring, wherein a cavity is formed in the valve body, at least part of the thermal element is positioned in the cavity, the fluid control valve is characterized by further comprising a first channel, a second channel and a valve port part, the valve port part is provided with a valve port, the first channel is communicated with the cavity and can be communicated with the second channel through the valve port, the thermal element comprises a body and a valve rod, the body is abutted against the spring, the valve rod is abutted against the valve body, the flow control valve is further provided with a channel juxtaposed with the valve port, one end of the channel is communicated with the cavity, the other end of the channel is communicated with the second channel, the flow of the channel is far smaller than that of the valve port, when the body is abutted against the valve port part, the body blocks the valve port, and the second passage is communicated with the first passage through the passage and the valve chamber.

2. The fluid control valve according to claim 1, wherein the channel is located at the valve port portion, the channel is recessed in an inner wall corresponding to the valve port, and the number of the channels is greater than or equal to 1.

3. The fluid control valve according to claim 2, wherein the valve body comprises a first valve body and a second valve body, one end of the second valve body is fixedly connected with the first valve body, and the joint is sealed, the first valve body comprises the first channel and a connecting portion, the valve body corresponding to the chamber is located between the first channel and the connecting portion, a first shoulder is formed on the inner wall of the first valve body on the side of the chamber close to the first channel, the connecting portion comprises a connecting portion small-diameter portion and a connecting portion large-diameter portion, the connecting portion small-diameter portion is relatively close to the chamber, and a second shoulder is formed on the inner wall of the first valve body at the joint of the connecting portion small-diameter portion and the connecting portion large-diameter portion.

4. The fluid control valve of claim 3, wherein the valve stem extends into the body at one end, the body including a body major diameter portion and a body minor diameter portion, the body major diameter portion having a first endwall portion on a side distal from the body minor diameter portion and a second endwall portion on a side proximal to the body minor diameter portion, the first endwall portion engaging the valve port portion.

5. The fluid control valve of claim 4, wherein the spring has a small end and a large end, the spring is sleeved on the body, the small end abuts against the second end wall portion, the large end abuts against the first shoulder, and an outer diameter of the large end is the same as an inner diameter of the valve body corresponding to the chamber.

6. The fluid control valve according to claim 5, wherein the second valve body includes a tubular body, the second passage is provided inside the tubular body, the tubular body includes a first port portion and a second port portion, the valve port portion is formed on an inner circumferential surface portion of the first port portion, the tubular body is provided with a first annular protrusion near the first port portion, a first annular groove is provided between the first port portion and the first annular protrusion, the first port portion extends into the connecting portion small diameter portion, the first port portion is in clearance fit with the connecting portion small diameter portion, the first annular protrusion is in clearance fit with the connecting portion large diameter portion, the first annular protrusion abuts against the second shoulder portion, and a seal ring is further provided in the first annular groove.

7. The fluid control valve of claim 6, wherein the passage includes a through-hole disposed at a first port portion, one end of the through-hole communicating with the second passage and the other end communicating with the chamber; or the channel is disposed at the body major diameter portion.

8. The fluid control valve according to claim 7, wherein the second valve body further comprises a valve stem seat, the valve stem seat is located in the second channel, the valve stem seat comprises a blind hole portion and a communication hole, the communication hole is communicated with the channels on two sides of the valve stem seat, the blind hole portion is provided with a blind hole, one end of the valve stem extends into the blind hole, the valve stem is in clearance fit with the blind hole, the valve stem is abutted against the bottom of the blind hole, and the valve stem seat is fixedly connected with the tubular body, or the valve stem seat and the tubular body are of an integral structure.

9. The fluid control valve of claim 8, further comprising a snap spring, the snap spring comprising a body, a first leg, and a second leg;

10. The fluid control valve according to any one of claims 1 to 9, wherein the inner peripheral surface portion of the connecting portion large diameter portion is provided with a first flat portion between the third through hole and the fourth through hole, the first flat portion may extend from one end to the other end of the inner peripheral surface portion of the connecting portion large diameter portion, or at least a part of the inner peripheral surface portion of the connecting portion large diameter portion is provided in a planar structure;