A cooling water flow regulating device and a thermostat

Abstract

The present invention discloses a cooling water flow regulating device and a thermostat. The cooling water flow regulating device is arranged at the inlet of the thermostat water inlet housing, and includes: a support base, the support base includes a support base bottom plate and a support base side wall connected to the support base bottom plate, and a water passing hole for cooling water to pass through is further formed on the support base bottom plate; a shielding member for abutting against the bottom end surface of the support base bottom plate, and the shielding member realizes the regulation of the cooling water flow by different shielding areas of the water passing hole. After the cooling water enters from the inlet of the thermostat water inlet housing, it first passes through the water passing hole. At this time, the shielding member is adjusted to realize the shielding of different areas of the water passing hole, so as to realize the precise regulation of the working temperature of the fuel cell, and further ensure the normal operation of the fuel cell.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle cooling systems, and particularly relates to a cooling water flow regulating device and a thermostat. Background Art

[0002] The thermostat for a fuel cell automatically adjusts the amount of water entering the radiator according to the high and low temperature of the cooling water, changes the water circulation range, so as to adjust the heat dissipation capacity of the cooling system, and ensures that the proton exchange membrane of the fuel cell works within a suitable temperature range. Therefore, the thermostat must maintain a good technical state, otherwise it will seriously affect the normal operation of the stack. For example, if the main valve of the thermostat opens too late, it will cause the stack to overheat; if the main valve opens too early, it will prolong the preheating time of the stack and make the stack temperature too low.

[0003] Generally, the thermostat adjusts the flow of air, gas or liquid by adjusting the valve core, using the melting and solidification of paraffin, and relying on thermal expansion or contraction to open and close the flow. In this way, the flow of each branch is adjusted, but this structure cannot accurately adjust the working temperature of the fuel cell.

[0004] Therefore, how to accurately adjust the working temperature of the fuel cell to ensure the normal operation of the fuel cell is a technical problem that those skilled in the art need to solve urgently. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a cooling water flow regulating device that can accurately adjust the working temperature of the fuel cell, thereby ensuring the normal operation of the fuel cell.

[0006] Another purpose of the present invention is also to provide a thermostat.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A cooling water flow regulating device is arranged at the entrance of the inlet housing of the thermostat, and includes:

[0009] A support seat, the support seat includes a support seat bottom plate and a support seat side wall connected to the support seat bottom plate, and a water passing hole for the cooling water to pass through is also opened on the support seat bottom plate;

[0010] A shielding member for abutting against the bottom end surface of the support seat bottom plate, and the shielding member adjusts the cooling water flow by different shielding areas of the water passing hole.

[0011] Preferably, the support seat and the shielding member are connected by bolts and nuts.

[0012] Preferably, the shielding member is an elastic telescopic cap, and the open end of the elastic telescopic cap can contract or expand, and the flow rate of the cooling water is adjusted by different shielding areas of the water passing holes.

[0013] Preferably, the elastic telescopic cap is in a hollow frustum shape, the open end is the end for abutting against the bottom end surface of the support base plate, the other end of the elastic telescopic cap is a closed end, and the cross-sectional area of the open end is larger than that of the closed end.

[0014] Preferably, a first through hole for the bolt to pass through is formed on the end surface of the closed end of the elastic telescopic cap, a second through hole for the bolt to pass through is formed on the support base plate, and the nut and the bolt are screwed and matched.

[0015] Preferably, the nut is a T-shaped nut, a sealing gasket is further arranged on the upper part of the support base plate, the water passing hole is formed between the inner side wall of the support seat side wall and the outer side wall of the sealing gasket, and the two arms of the T-shaped nut are respectively in contact with the sealing gasket.

[0016] Preferably, a gasket is further arranged between the bolt head of the bolt and the bottom end surface of the elastic telescopic cap.

[0017] Preferably, the shielding member is a plurality of support rods fixedly connected to the side wall of the bolt head of the bolt and a plurality of shielding sheets fixedly connected to the support rods, and any one of the shielding sheets corresponds to any one of the water passing holes.

[0018] A thermostat includes a cooling water flow rate adjusting device, and the cooling water flow rate adjusting device is the cooling water flow rate adjusting device as described in any one of the above.

[0019] Preferably, the cooling water flow rate adjusting device is arranged between the inlet housing and the outlet housing, and the inlet housing and the outlet housing are sealed by a sealing ring.

[0020] It can be seen from the above technical solutions that the disclosed cooling water flow rate adjusting device of the present invention is arranged at the inlet of the thermostat inlet housing and includes: a support seat, the support seat includes a support seat bottom plate and a support seat side wall connected to the support seat bottom plate, and a water passing hole for the cooling water to pass through is further formed on the support seat bottom plate; a shielding member for abutting against the bottom end surface of the support seat bottom plate, and the shielding member adjusts the flow rate of the cooling water by different shielding areas of the water passing holes. After the cooling water enters from the inlet of the thermostat inlet housing, it first passes through the water passing hole. At this time, the shielding member is adjusted to realize the shielding of different areas of the water passing hole, so as to realize the precise adjustment of the working temperature of the fuel cell, and further ensure the normal operation of the fuel cell. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0022] Figure 1 It is a top view structural schematic diagram of the cooling water flow rate regulating device disclosed in the embodiments of the present invention;

[0023] Figure 2 is Figure 1 A cross-sectional structural schematic diagram along the A-A direction.

[0024] Figure 3 It is an exploded structural schematic diagram of the overall structure of the thermostat disclosed in the embodiments of the present invention;

[0025] Figure 4 It is a cross-sectional structural schematic diagram of the thermostat disclosed in the embodiments of the present invention.

[0026] Among them, the names of each component are as follows:

[0027] 1 - Support seat, 11 - Support seat bottom plate, 12 - Support seat side wall, 13 - Water passing hole, 2 - Elastic expansion cap, 3 - Bolt, 4 - Nut, 5 - Sealing gasket, 6 - Spacer, 7 - Inlet housing, 8 - Outlet housing. Specific embodiments

[0028] In view of this, the core of the present invention lies in providing a cooling water flow rate regulating device, which can accurately regulate the working temperature of the fuel cell, so as to ensure the normal operation of the fuel cell.

[0029] Another core of the present invention also lies in providing a thermostat.

[0030] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0031] Such as Figure 1-2As shown in the figure, the cooling water flow regulating device disclosed in the embodiment of the present invention is arranged at the inlet of the thermostat water inlet housing 7 and includes: a support seat 1, the support seat 1 includes a support seat bottom plate 11 and a support seat side wall 12 connected to the support seat bottom plate 11, and a water passing hole 13 for cooling water to pass through is also provided on the support seat bottom plate 11; a shielding member for abutting against the bottom end surface of the support seat bottom plate 11, and the shielding member realizes the regulation of the cooling water flow by different shielding areas of the water passing hole 13. After the cooling water enters from the inlet of the thermostat water inlet housing 7, it first passes through the water passing hole 13. At this time, the shielding member is adjusted to realize the shielding of different areas of the water passing hole 13, so as to realize the precise regulation of the working temperature of the fuel cell, and further ensure the normal operation of the fuel cell.

[0032] It should be noted that the support seat 1 and the shielding member are connected by bolts 3 and nuts 4.

[0033] As one of the embodiments, in the cooling water flow regulating device disclosed in the embodiment of the present invention, the shielding member preferably adopts an elastic telescopic cap 2, and the open end of the elastic telescopic cap 2 can contract or expand, and the cooling water flow is regulated by different shielding areas of the water passing hole 13.

[0034] It should be noted that when the open end of the elastic telescopic cap 2 abuts against the support seat bottom plate 11 placed inside the water passing hole 13, the elastic telescopic cap 2 does not shield the water passing hole 13, and at this time, the cooling water flow is the largest; when the open end of the elastic telescopic cap 2 gradually expands towards the direction of the support seat side wall 12, the shielding area of the elastic telescopic cap 2 for the water passing hole 13 is continuously increasing. When the elastic telescopic cap 2 abuts against the support seat bottom plate 11 outside the water passing hole 13, the elastic telescopic cap 2 completely shields the water passing hole 13, and at this time, the flow rate of the cooling water is zero.

[0035] It should be explained that the inside of the water passing hole 13 refers to the side close to the center of the support seat bottom plate 11, and the outside of the water passing hole 13 refers to the side close to the support seat side wall 12.

[0036] Please continue to refer to Figure 1 , the elastic telescopic cap 2 is a hollow frustum shape, where the open end is the end for abutting against the bottom end surface of the support seat bottom plate 11, the other end of the elastic telescopic cap 2 is a closed end, and the cross-sectional area of the open end is larger than that of the closed end. Therefore, the shielding area of the elastic telescopic cap 2 for the water passing hole 13 can be controlled by adjusting the opening area of the open end of the elastic telescopic cap 2, so as to adjust the flow rate of the cooling water passing through the water passing hole 13.

[0037] Of course, the support base 1 and the elastic expansion cap 2 are connected by bolts 3 and nuts 4. Specifically, a first through hole for the bolt 3 to pass through is provided on the end face of the closed end of the elastic expansion cap 2, and a second through hole for the bolt 3 to pass through is provided on the support base bottom plate 11. The bolt 3 passes through the first through hole and the second through hole in sequence to connect the support base 1 and the elastic expansion cap 2, and then the nut 4 and the bolt 3 are tightly fitted.

[0038] Since the cooling water flow regulating device disclosed in the embodiment of the present invention is arranged at the inlet of the thermostat inlet housing 7, the operator can adjust the bolt 3 with a cross screwdriver, thereby adjusting the fastening degree of the bolt 3 and the nut 4.

[0039] Of course, the higher the fastening degree of the cooperation between the bolt 3 and the nut 4, the greater the extrusion force on the elastic expansion cap 2, and the larger the opening area of the open end of the elastic expansion cap 2, so the larger the shielding area for the water passing hole 13. Therefore, the flow rate of the cooling water passing through the water passing hole 13 is smaller; when the fastening degree of the connection between the bolt 3 and the nut 4 is lower, the extrusion force on the elastic expansion cap 2 is smaller, and the opening area of the open end of the elastic expansion cap 2 is smaller, so the shielding area for the water passing hole 13 is smaller. Therefore, the flow rate of the cooling water passing through the water passing hole 13 is larger.

[0040] In order to avoid nut failure and improve the service life of the nut, in the cooling water flow regulating device disclosed in the embodiment of the present invention, the nut 4 is preferably a T-shaped nut.

[0041] As Figure 2 shown, a sealing gasket 5 is further provided on the upper part of the support base bottom plate 11, wherein the water passing hole 13 is arranged between the inner side of the support base side wall 12 and the outer side wall of the sealing gasket 5, and the two arms of the T-shaped nut are respectively in contact with the sealing gasket 5.

[0042] In the cooling water flow regulating device disclosed in the embodiment of the present invention, a gasket 6 is further provided between the bolt head of the bolt 3 and the bottom end face of the elastic expansion cap 2. Such a setting can prevent the elastic expansion cap 2 from being damaged due to long-term use.

[0043] As another specific embodiment, in the cooling water flow regulating device disclosed in the embodiment of the present invention, the shielding member can be a plurality of support rods fixedly connected to the side wall of the bolt head of the bolt 3, and a plurality of shielding sheets fixedly connected to the support rods. Any one of the shielding sheets corresponds to any one of the water passing holes 13. By adjusting the bolt to rotate clockwise, the shielding area of the shielding sheet for the water passing hole 13 gradually increases, and by adjusting the bolt to rotate counterclockwise, the shielding area of the shielding sheet for the water passing hole 13 gradually decreases. The flow rate of the water passing hole 13 can also be adjusted through this device.

[0044] An embodiment of the present invention also discloses a thermostat, which includes a cooling water flow regulating device, and the cooling water flow regulating device is the cooling water flow regulating device disclosed in any one of the above embodiments.

[0045] Since the thermostat adopts the cooling water flow regulating device disclosed in the above embodiment, the thermostat has the technical advantages of the cooling water flow regulating device, and the details are not repeated in this application.

[0046] It should be noted that the cooling water flow regulating device is arranged between the inlet housing 7 and the outlet housing 8, and the inlet housing 7 and the outlet housing 8 are sealed by a sealing ring.

[0047] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cooling water flow regulating device is arranged at the inlet of the thermostat water inlet housing (7), and is characterized in that, Comprising: A support base (1), the support base (1) includes a support base bottom plate (11) and a support base side wall (12) connected to the support base bottom plate (11), and a water passing hole (13) for cooling water to pass through is also provided on the support base bottom plate (11); A shielding member for abutting against the bottom end surface of the support base bottom plate (11), and the shielding member adjusts the flow rate of the cooling water by different shielding areas of the water passing hole (13); The shielding member is an elastic telescopic cap (2), and the open end of the elastic telescopic cap (2) can contract or expand, and the flow rate of the cooling water is adjusted by different shielding areas of the water passing hole (13); The elastic telescopic cap (2) is in the shape of a hollow frustum, the open end is the end for abutting against the bottom end surface of the support base bottom plate (11), the other end of the elastic telescopic cap (2) is a closed end, and the cross-sectional area of the open end is larger than that of the closed end.

2. The cooling water flow rate regulating device according to claim 1, characterized in that The support base (1) and the shielding member are connected by bolts (3) and nuts (4).

3. The cooling water flow rate regulating device according to claim 2, characterized in that, A first through hole for the bolt (3) to pass through is provided on the end surface of the closed end of the elastic telescopic cap (2), a second through hole for the bolt (3) to pass through is provided on the support base bottom plate (11), and the nut (4) and the bolt (3) are screwed and matched.

4. The cooling water flow rate regulating device according to claim 2, characterized in that The nut (4) is a T-shaped nut, a sealing gasket (5) is further provided on the upper part of the support base bottom plate (11), the water passing hole (13) is provided between the inner side of the support base side wall (12) and the outer side wall of the sealing gasket (5), and the two arms of the T-shaped nut are respectively in contact with the sealing gasket (5).

5. The cooling water flow rate regulating device according to claim 2, characterized in that, A gasket (6) is further provided between the bolt head of the bolt (3) and the bottom end surface of the elastic telescopic cap (2).

6. The cooling water flow rate adjusting device according to claim 2, characterized in that The shielding member is a plurality of support rods fixedly connected to the side wall of the bolt head of the bolt (3), and a plurality of shielding sheets fixedly connected to the support rods, and any one of the shielding sheets corresponds to any one of the water passing holes (13).

7. A thermostat, characterized in that, Including a cooling water flow rate adjusting device, and the cooling water flow rate adjusting device is the cooling water flow rate adjusting device according to any one of claims 1-6.

8. The thermostat according to claim 7, characterized in that, The cooling water flow rate adjusting device is arranged between the inlet housing (7) and the outlet housing (8), and the inlet housing (7) and the outlet housing (8) are sealed by a sealing ring.

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