Temperature regulating valve and applications thereof

Abstract

To provide a temperature regulating valve with a simple structure and high accuracy, and applications thereof.SOLUTION: A temperature regulating valve includes a mounting seat 1 and a valve disc 2 set on the end face of the mounting seat. In the mounting seat, a valve hole 11 is formed that penetrates through the mounting seat. An end of the valve disc close to the valve hole is set to be slidable relatively to the valve hole in accordance with temperature changes. In accordance with temperature changes, the valve disc deforms, gradually changing its position relative to the valve hole, gradually blocking the valve hole or gradually overlapping a valve disc hole with the valve hole, thereby allowing a gradual change in the cross-sectional area through which fluid can pass and automatically adjusting the flow rate of the fluid in accordance with the temperature changes.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the technical field of valves, in particular to thermostatic valves and their uses. [Background technology]

[0002] Regulating valves adjust the flow rate of fluid by changing the cross-sectional area of ​​the flow path, and include manual regulating valves and automatic regulating valves. Automatic regulating valves automatically adjust the opening of the valve based on the control signal of the automation system to adjust the flow rate, pressure, and liquid level of the fluid. However, automatic regulating valves are equipped with a valve body and an actuator system, and require the installation of monitoring devices such as a temperature sensor, and have a complex and large structure, making them unsuitable for small equipment, etc., while manual regulating valves require manual adjustment, which means they cannot be adjusted in a timely manner and have low accuracy, among other disadvantages. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Chinese Patent Application Publication No. CN116006742A Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE PRESENT EMBODIMENT It is an object of the present invention to provide a thermostatic valve and its use to overcome deficiencies in the prior art. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention provides the following technical means.

[0006] The present invention discloses a temperature control valve which comprises a mounting seat and a valve piece provided on an end face of the mounting seat, wherein a valve hole penetrating the mounting seat is provided within the mounting seat, and wherein an end of the valve piece proximate to the valve hole is arranged to be slidable relative to the valve hole in response to changes in temperature.

[0007] Furthermore, in the above temperature regulating valve, the valve piece comprises a mounting piece, a sliding piece, and a first connecting member and a second connecting member respectively connected between the mounting piece and the sliding piece, the mounting piece is fixed to an end face of the mounting seat, and the thermal expansion and contraction coefficient of the first connecting member is greater than or less than the thermal expansion and contraction coefficient of the second connecting member.

[0008] Furthermore, in the temperature control valve, a valve piece hole corresponding to the valve hole is provided in the valve piece.

[0009] Furthermore, in the above temperature control valve, the valve piece is made of a thermal expansion / contraction material that is sensitive to temperature, and the end portion away from the valve hole is fixed to the mounting seat.

[0010] Furthermore, in the above temperature control valve, a groove corresponding to the valve piece is provided on the end face of the mounting seat, and the valve hole communicates with the groove.

[0011] Furthermore, in the above temperature control valve, the valve piece is hinged to the end face of the mounting seat, and a drive device for swinging the valve piece is connected to the end away from the valve hole.

[0012] Furthermore, in the above temperature control valve, the drive device is a drive piece made of a thermal expansion and contraction material that is sensitive to temperature, and both ends of the drive piece are hingedly connected to the valve piece and the mounting seat, respectively.

[0013] Furthermore, in the above temperature control valve, the valve piece has a roll-like structure, and one end is fixed to the mounting seat.

[0014] The present invention discloses a piston having a piston body with the above-mentioned temperature regulating valve provided at one end and a flow passage provided therein that communicates with the valve hole.

[0015] The present invention discloses a door closer including the above piston.

[0016] Compared with the prior art, this temperature regulating valve has a simple structure, and the valve piece deforms in response to changes in temperature, gradually changing its relative position to the valve hole, gradually blocking the valve hole or causing the valve piece hole to gradually overlap with the valve hole, gradually changing the cross-sectional area through which the fluid can pass, and automatically adjusting the flow rate of the fluid in response to changes in temperature. [Brief description of the drawings]

[0017] In order to more clearly describe the technical means in the embodiments of the present invention or the prior art, the drawings that need to be used in the description of the embodiments or the prior art will be briefly described below. The drawings in the following description are only some embodiments described in the present invention, and it is obvious that those skilled in the art can derive other drawings from these drawings without creative efforts. [Figure 1] 1 is a structural schematic diagram of a temperature regulating valve according to a first embodiment of the present invention. [Diagram 2] 4 is a diagram showing a state of the temperature regulating valve when the valve piece according to the first embodiment of the present invention is deformed. FIG. [Diagram 3] 4 is a diagram showing a state of the temperature regulating valve when the valve piece according to the first embodiment of the present invention closes the valve hole. FIG. [Figure 4] FIG. 6 is a structural schematic diagram of a temperature regulating valve according to a second embodiment of the present invention. [Diagram 5] 10 is a diagram showing a state of a temperature regulating valve when a valve piece according to a second embodiment of the present invention is deformed. FIG. [Figure 6] 13 is a diagram showing a state of the temperature regulating valve when the valve piece hole and the valve hole overlap with each other according to the second embodiment of the present invention. FIG. [Figure 7] FIG. 11 is a structural schematic diagram of a temperature regulating valve according to a third embodiment of the present invention. [Figure 8] FIG. 11 is a cross-sectional view of a temperature regulating valve according to a third embodiment of the present invention. [Figure 9] 13 is a diagram showing a state of a temperature regulating valve when a valve piece according to a third embodiment of the present invention is deformed. FIG. [Figure 10] 13 is a diagram showing a state of the temperature regulating valve when the valve piece hole and the valve hole overlap with each other according to the third embodiment of the present invention. FIG. [Figure 11]FIG. 11 is a cross-sectional view of a temperature regulating valve according to a fourth embodiment of the present invention. [Figure 12] 13 is a diagram showing a state of a temperature regulating valve when a valve piece according to a fourth embodiment of the present invention is deformed. FIG. [Figure 13] 13 is a diagram showing a state of the temperature regulating valve when the valve piece hole and the valve hole overlap each other according to the fourth embodiment of the present invention. FIG. [Figure 14] FIG. 11 is a cross-sectional view of a temperature regulating valve according to a fifth embodiment of the present invention. [Figure 15] 13 is a diagram showing a state of a temperature regulating valve when a valve piece according to a fifth embodiment of the present invention is deformed. FIG. [Figure 16] 13 is a diagram showing a state of the temperature regulating valve when the valve piece hole and the valve hole overlap each other according to the fifth embodiment of the present invention. FIG. [Figure 17] FIG. 11 is a cross-sectional view of a temperature regulating valve according to a sixth embodiment of the present invention. [Figure 18] FIG. 13 is a diagram showing a state of a temperature regulating valve when a valve piece according to a sixth embodiment of the present invention is deformed. [Figure 19] 13 is a diagram showing a state of the temperature regulating valve when the valve piece hole and the valve hole overlap each other according to the sixth embodiment of the present invention. FIG. [Figure 20] FIG. 11 is a structural schematic diagram of a piston according to a seventh embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the technical means in the embodiments of the present invention will be described in detail with reference to the drawings in the embodiments of the present invention. It is clear that the described embodiments are not all of the embodiments of the present invention, but are merely a part of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts are all within the protection scope of the present invention.

[0019] In describing the present invention, the orientations or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientations or positional relationships shown in the drawings, and are merely for facilitating and simplifying the description of the present invention, and are not to be understood as limiting the present invention, as they do not indicate or imply that the devices or parts referred to have a particular orientation, or must be configured and operated in a particular orientation. Also, the terms "first", "second", and "third" are merely for descriptive purposes, and are not to be understood as indicating or implying relative importance.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "attached", "coupled" and "connected" should be understood in a broad sense. For example, they may be fixedly connected, detachably connected, or integrally connected. They may also be mechanically connected or electrically connected. They may also be directly connected, indirectly connected via an intermediate member, or communicated inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0021] As shown in Figures 1 to 20, the temperature control valve comprises a mounting seat 1 and a valve piece 2 provided on an end surface of the mounting seat 1. A valve hole 11 penetrating the mounting seat 1 is provided within the mounting seat 1, and the end of the valve piece 2 close to the valve hole 11 is arranged to be slidable relative to the valve hole 11 in response to changes in temperature.

[0022] In this technical means, the shape of the valve hole is not particularly limited as long as the fluid can pass through, and when the end of the valve piece close to the valve hole slides relative to the valve hole in response to changes in temperature, the cross-sectional area through which the fluid can pass also changes, and the flow rate of the fluid is automatically adjusted in response to changes in temperature. The valve piece is provided on one end surface of the mounting seat, and when a fluid such as hydraulic oil flows from the side where the valve piece is located to the temperature control valve, the valve piece comes into close contact with the surface of the mounting seat, and the fluid is either blocked by the valve piece or the flow rate changes in response to changes in the deformation amount of the valve piece. When the flow direction of the fluid changes, i.e., when it flows from the side away from the valve piece to the temperature control valve, the fluid flows along the valve hole to the valve piece, impacting the valve piece, which is lifted up, and is not directly regulated by the valve piece, forming a one-way flow regulating valve. Two valve pieces are provided at both ends of the valve hole, and the two valve pieces slide in the same or opposite directions. The valve piece that the fluid passes through first adjusts the flow rate, and the valve piece that passes later is lifted up by the impact and does not affect the flow rate. When the fluid flow direction changes, the functions of the two valve pieces are exchanged, and the flow rate is similarly adjusted according to the change in temperature. EXAMPLES

[0023] For example, as shown in Figures 1 to 3, the valve piece 2 comprises an attachment piece 21, a sliding piece 22, and a first connecting member 23 and a second connecting member 24 connected between the attachment piece 21 and the sliding piece 22, respectively, the attachment piece 21 is fixed to an end face of the mounting seat 1, and the thermal expansion and contraction coefficient of the first connecting member 23 is greater than or smaller than the thermal expansion and contraction coefficient of the second connecting member 24.

[0024] In this technical means, the mounting piece is fixed to the end surface of the mounting seat by a method such as crimping, and when the temperature changes, the thermal expansion and contraction coefficients of the first and second connecting members are different, so that the first and second connecting members are deformed by different amounts, thereby causing the first and second connecting members to bend and swing the sliding piece, and as the sliding piece swings, the valve hole is gradually blocked. It is sufficient that the first and second connecting members have a conventional structure such as a strip or line, and deformation such as overall bending can be realized when the temperature changes. In the initial state, the valve piece blocks the valve hole, and as the temperature changes, the valve piece gradually moves away from the valve hole. In the initial state, the valve piece and the valve hole are offset from each other, and as the temperature changes, the valve piece gradually approaches the valve hole until it completely blocks the valve hole. The direction in which the sliding piece swings is determined by the positions of the first connecting member and the second connecting member and their thermal expansion and contraction coefficients. The first connecting member is provided to the left of the second connecting member, and the thermal expansion and contraction coefficient of the first connecting member is smaller than that of the second connecting member. When the temperature drops, the amount of contraction of the second connecting member is greater than the amount of contraction of the first connecting member, so that the sliding piece swings toward the side where the second connecting member is located. EXAMPLES

[0025] For example, as shown in Figures 4 to 6, a valve piece hole corresponding to the valve hole is provided in the sliding piece 22, and the area of ​​the overlapping portion between the valve piece hole and the valve hole 11 changes according to the sliding of the sliding piece, which is the same as in Example 1.

[0026] In this technical means, the mounting piece is fixed to the end surface of the mounting seat by a method such as crimping, and when the temperature changes, the thermal expansion and contraction coefficients of the first and second connecting members are different, so that the first and second connecting members are deformed by different amounts, which causes the first and second connecting members to bend and swing the sliding piece, and when the sliding piece swings, the valve piece hole moves relative to the valve hole, and it is sufficient that the first and second connecting members have a conventional structure such as a strip or line shape, and can realize deformation such as overall bending when the temperature changes. In the initial state, the valve piece hole and the valve hole overlap, and when the temperature changes, the valve piece hole gradually moves away from the valve hole. In the initial state, the valve piece hole and the valve hole are offset from each other, and when the temperature changes, the valve piece hole gradually approaches the valve hole. The direction in which the sliding piece swings is determined by the positions of the first connecting member and the second connecting member and their thermal expansion and contraction coefficients. The first connecting member is provided to the left of the second connecting member, and the thermal expansion and contraction coefficient of the first connecting member is smaller than that of the second connecting member. When the temperature drops, the amount of contraction of the second connecting member is greater than the amount of contraction of the first connecting member, so that the sliding piece swings to the right.

[0027] For example, as shown in FIGS. 1 to 6, the attachment piece 21 and the sliding piece 22 are integrally formed with the first connecting member 23 or the second connecting member 24.

[0028] In this technical solution, the mounting piece and the sliding piece are integrally formed with the first connecting member by a method such as pressing, and then both ends of the second connecting member are fixed to the corresponding positions of the mounting piece and the sliding piece by conventional methods such as welding, rolling, etc. The mounting piece and the sliding piece can also be integrally formed with the second connecting member, and the first connecting member is fixed by a method such as welding or rolling. A crimping hole is provided in the mounting piece, and it is hinged to the mounting seat by a conventional rivet, etc. The mounting piece, the sliding piece, the first connecting member, and the second connecting member may each be processed and formed, and fixedly connected to each other by conventional methods such as welding or rolling. EXAMPLES

[0029] For example, as shown in FIGS. 7 to 10, the valve piece 2 is made of a thermal expansion and contraction material that is sensitive to temperature, and the end portion remote from the valve hole is fixed to the mounting seat 1. As shown in FIG.

[0030] In this technical solution, the valve leaf is made of a conventional high expansion alloy or a high expansion material such as nylon, and the valve leaf expands or contracts in response to changes in temperature, gradually changing the relative position between the valve leaf hole and the valve hole, or gradually changing the area where the valve leaf blocks the valve hole, so that the cross-sectional area through which the fluid can pass gradually changes, and the flow rate of the fluid is automatically adjusted in response to changes in temperature.

[0031] For example, as shown in Figs. 4 to 7, a groove corresponding to the valve piece 2 is provided on the end face of the mounting seat 1, and the valve hole 11 communicates with the groove.

[0032] In this technical means, an oval groove is formed in the end face of the mounting seat, the end closest to the outer edge is connected to the valve piece by a crimping screw or the like, and the other end is connected to the valve hole. The groove restricts the deformation direction of the valve piece, allowing the valve piece to expand and contract as much as possible along the longitudinal direction of the groove. EXAMPLES

[0033] For example, as shown in Figs. 11 to 13, the valve piece 2 is hinged to an end face of the mounting seat 1, and a drive device 3 for swinging the valve piece is connected to the end away from the valve hole 11.

[0034] In this technical solution, both the valve piece and the mounting seat are made of low-expansion materials, and the actuator is made of high-expansion material that is sensitive to temperature. When the temperature changes, the actuator swings the valve piece, changing the overlapping area between the valve piece hole and the valve hole or changing the area where the valve piece blocks the valve hole, so that the cross-sectional area through which the fluid can pass gradually changes, and the flow rate of the fluid is automatically adjusted according to changes in temperature.

[0035] For example, as shown in Figs. 8 to 10, the driving device is a driving piece made of a thermal expansion and contraction material that is sensitive to temperature, and both ends of the driving piece are hingedly connected to the valve piece 2 and the mounting seat 1, respectively.

[0036] In this technical solution, the driving piece is made of a conventional high-expansion alloy or a high-expansion material such as nylon, and the driving piece expands or contracts in response to changes in temperature, causing the valve piece to swing. The overlapping area between the valve piece hole and the valve hole or the area where the valve piece blocks the valve hole changes, so that the cross-sectional area through which the fluid can pass gradually changes, and the flow rate of the fluid is automatically adjusted in response to changes in temperature. EXAMPLES

[0037] For example, as shown in Figures 14 to 16, the valve piece 2 is a roll-shaped elastic body and has an inner layer connecting member 25 and an outer layer connecting member 26 with different thermal expansion and contraction coefficients, and the inner ring end of the valve piece is located close to the valve hole 11 and the outer ring end is fixed to the mounting seat.

[0038] In this technical means, the roll-shaped elastic body is made of an inner layer metal piece and an outer layer metal piece with different thermal expansion and contraction coefficients, and both ends of the outer layer metal piece protrude from both ends of the inner layer metal piece to form a mounting boss and a sliding boss, which may be provided independently and fixedly connected by a conventional method such as crimping. The mounting boss located at the outer ring end of the outer layer metal piece is fixed to the end face of the mounting seat, and the sliding boss located at the inner ring end of the outer layer metal piece is provided close to the valve hole, and when the temperature changes, the thermal expansion and contraction coefficients of the inner layer metal piece and the outer layer metal piece are different, so that the deformation amounts of the inner layer metal piece and the outer layer metal piece are different, which causes the roll-shaped elastic body to contract or release, and the overlapping area between the valve piece hole and the valve hole changes, or the area where the sliding boss blocks the valve hole changes, so that the cross-sectional area through which the fluid can pass gradually changes, and the flow rate of the fluid is automatically adjusted according to the change in temperature. The valve piece may also be made of a single temperature-sensitive thermal expansion and contraction material, and when the temperature changes, the deformation amount is smaller than that of the two layers of materials, so that the accuracy of adjusting the flow rate is higher, and it is used in cases where high accuracy is required, such as experimental equipment. The valve piece may also be made of three or more layers of materials with different thermal expansion and contraction coefficients. EXAMPLES

[0039] As shown in Figures 17 to 19, the drive device is a roll-shaped elastic body, which is drive-connected to one end of the valve piece by a structure such as a conventional connecting rod, and when the roll-shaped elastic body contracts or releases, the connecting rod causes the valve piece to swing around the crimped joint between the valve piece and the mounting seat, changing the overlapping area between the valve piece hole and the valve hole, or changing the area over which the sliding boss blocks the valve hole, so that the cross-sectional area through which the fluid can pass gradually changes and the flow rate of the fluid is automatically adjusted in response to changes in temperature, which is the same as in Example 4. EXAMPLES

[0040] For example, as shown in Fig. 20, the piston has a piston body 4 to which the temperature control valve is connected at one end by a method such as screwing, bolting or welding, and in which a flow path communicating with the valve hole 11 is provided. The temperature control valve is fixed to the end remote from the spring by a bolt or the like, and the contact surface between the temperature control valve and the piston body is sealed by a conventional technique such as a stepped structure or a seal ring to prevent hydraulic oil from leaking from the connection between the temperature control valve and the piston body, and the mounting seat of the temperature control valve can also be integrally structured with the piston body. When the door is opened, the piston body presses the spring, the space on the side where the spring is located becomes smaller, and the hydraulic oil flows to the side remote from the spring, pressing the valve piece and elastically deforming the valve piece, ensuring a smooth flow of hydraulic oil. When the door is closed, the spring releases its elastic energy and pushes the piston to return, so that the hydraulic oil flows to the side where the spring is located, and presses the valve piece against the end face of the mounting seat to close the valve hole, forming a one-way flow path, and the hydraulic oil returns along the oil return path of the door closer. When the temperature of the external environment decreases, the viscosity of the hydraulic oil gradually increases, the valve piece deforms, the valve piece hole moves relative to the valve hole, and the valve piece hole and the valve hole gradually overlap, so that the cross-sectional area through which the fluid can pass gradually changes, and the flow rate of the fluid is automatically adjusted according to the change in temperature, and the increased viscosity of the hydraulic oil compensates for the reduced flow rate in the oil return path, ensuring the closing speed of the door. EXAMPLES

[0041] A door closer equipped with the above piston. A door closer using the piston can ensure the door closing speed even when used in extremely cold weather or in low-temperature northern regions, does not affect use at normal temperatures, and does not require manual adjustment.

[0042] In summary, this temperature control valve has a simple structure, and the valve piece deforms in response to changes in temperature, gradually changing its relative position with the valve hole, gradually blocking the valve hole or gradually overlapping the valve piece hole with the valve hole, so that the cross-sectional area through which the fluid can pass gradually changes, and the flow rate of the fluid is automatically adjusted in response to changes in temperature. This piston-based door closer can ensure the door closing speed even when used in extremely cold weather or in low-temperature northern regions, and does not affect use at normal temperatures, and does not require manual adjustment.

[0043] It should be noted that, in this specification, relational terms such as "first," "second," and the like, are merely intended to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that such an actual relationship or order exists between these entities or operations. Furthermore, the terms "comprise," "include," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or device that includes a set of elements does not merely include those elements, but also includes other elements not expressly listed or that are inherent to such process, method, article, or device. In the absence of further limitations, an element that is limited by the phrase "comprises" does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0044] It should be noted that the above are merely specific embodiments of the present invention, and those skilled in the art may make various improvements and modifications without departing from the spirit of the present invention, and these improvements and modifications should also be considered as within the protection scope of the present invention.

Claims

1. 1. A temperature control valve comprising: a mounting seat; and a valve piece provided on an end face of the mounting seat, said mounting seat having a valve hole penetrating said mounting seat, said valve piece having an end proximate to the valve hole that is slidable relative to the valve hole in response to changes in temperature.

2. The temperature control valve according to claim 1, characterized in that the valve piece comprises a mounting piece, a sliding piece, and a first connecting member and a second connecting member respectively connected between the mounting piece and the sliding piece, the mounting piece is fixed to an end face of the mounting seat, and the thermal expansion and contraction coefficient of the first connecting member is greater or smaller than the thermal expansion and contraction coefficient of the second connecting member.

3. 2. The thermoregulating valve according to claim 1, wherein the valve piece has a valve piece hole corresponding to the valve hole.

4. 2. The thermoregulating valve according to claim 1, wherein the valve piece is made of a thermal expansion / contraction material that is sensitive to temperature, and an end portion thereof that is away from the valve hole is fixed to a mounting seat.

5. 5. The temperature control valve according to claim 4, wherein an end surface of the mounting seat is provided with a groove corresponding to the valve piece, and the valve hole communicates with the groove.

6. 2. The temperature control valve according to claim 1, wherein the valve piece is hinged to an end surface of the mounting seat, and a drive device for swinging the valve piece is connected to an end portion remote from the valve hole.

7. 7. The thermoregulating valve according to claim 6, wherein the driving device is a driving piece made of a thermal expansion and contraction material sensitive to temperature, and both ends of the driving piece are hingedly connected to the valve piece and the mounting seat, respectively.

8. 2. The thermoregulating valve according to claim 1, wherein the valve piece has a roll-like structure and one end is fixed to the mounting seat.

9. A piston comprising a piston body having at one end thereof the temperature control valve according to any one of claims 1 to 8 and an internal flow passage communicating with the valve hole.

10. A door closer comprising the piston according to claim 9.

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