Liquid flow adjusting device and liquid conveying device

Abstract

The invention provides a liquid flow adjusting device and a liquid conveying device. The liquid flow adjusting device comprises a shell, at least one bimetallic strip and a valve body, wherein the bimetallic strips and the valve body are arranged in the shell. And the shell is provided with a liquid inlet and a liquid outlet. The valve body is arranged in the shell, and a liquid channel communicated with the liquid inlet and the liquid outlet is formed in the valve body. The bimetallic strip is fixedly arranged on the shell, and the bimetallic strip deforms due to temperature change so as to change the flow area of the liquid channel. The liquid flow adjusting device and the liquid conveying device have the advantages of being high in flow control precision, high in reliability, simple in control method, small in size, simple in structure and the like.

Description

Technical Field

[0001] The present application relates to the technical field of flow control devices, and in particular to a liquid flow regulating device and a liquid conveying device. Background Art

[0002] In the fields of aerospace technology, electronic information technology, transportation equipment manufacturing, new energy, rail transit air conditioning, central temperature control, energy storage temperature control, liquid cooling and electronic heat dissipation, cabinet air conditioning, data center integration, cold chain temperature control, and indoor air environment control, hydraulic valves are key devices widely used. The function of a hydraulic valve is to achieve precise control by adjusting the flow rate, pressure, and direction of a fluid, etc., to meet the requirements of different industries.

[0003] In the process of implementing the present application, the inventors found that there are at least the following problems in the prior art:

[0004] Existing flow control valves usually use piston seals to control fluid flow. Manual flow valves require manual control of the flow rate, and the uncertainty of flow control is large and the accuracy is low. Summary of the Invention

[0005] Based on this, the present application provides a liquid flow regulating device and a liquid conveying device, which achieve high reliability with a simple structure, and do not require manual adjustment and setting of electrical control components, improving the control accuracy and simplifying the control process.

[0006] To achieve the above object, the technical solution of the embodiment of the present application is realized as follows: On the one hand, the embodiment of the present application provides a liquid flow regulating device, including a housing, and at least one bimetal sheet and a valve body disposed in the housing;

[0007] The housing is provided with a liquid inlet and a liquid outlet;

[0008] The valve body is disposed in the housing and forms a liquid passage communicating the liquid inlet and the liquid outlet;

[0009] The bimetal sheet is fixedly disposed on the housing, and the bimetal sheet deforms due to temperature change to change the flow area of the liquid passage.

[0010] In one embodiment, the valve body includes a plurality of blocks, the plurality of blocks are arranged in parallel along the liquid flow direction, and a channel opening is formed between every two adjacent blocks;

[0011] The plurality of bimetal sheets are arranged in parallel along the liquid flow direction, and the free ends are correspondingly disposed with the channel openings.

[0012] In one embodiment, a plurality of the stoppers are arranged in parallel at equal intervals, and a plurality of the bimetal sheets are arranged in parallel at equal intervals.

[0013] In one embodiment, the bimetal sheet includes an active layer and a passive layer which are stacked, and the coefficient of thermal expansion of the active layer is greater than that of the passive layer.

[0014] In one embodiment, each of the bimetal sheets is configured to bend in the same direction when heated.

[0015] In one embodiment, a minimum flow clearance is provided between the bimetal sheet and the valve body.

[0016] In one embodiment, the housing includes an upper cover and a bottom shell, the upper cover is disposed on the open end of the bottom shell, and is detachably connected to the bottom shell.

[0017] In one embodiment, limiting card slots are respectively provided corresponding in the upper cover and the bottom shell, the limiting card slots are disposed at one end of the housing close to the liquid inlet, and the limiting card slots are used for clamping the fixed end of the bimetal sheet to fix the fixed end of the bimetal sheet on the housing.

[0018] In one embodiment, each of the bimetal sheets is configured such that the maximum deformation amount does not exceed the adjacent stopper or the adjacent channel opening.

[0019] On the other hand, an embodiment of the present application provides a liquid delivery device, including a pipeline and the liquid flow rate regulating device as described above, and the liquid flow rate regulating device is connected to the pipeline.

[0020] The present application has at least the following beneficial effects: The liquid flow rate regulating device of the embodiment of the present application realizes the control and regulation of the liquid flow rate by arranging a bimetal sheet and a valve body in the housing. Without changing the overall design concept, different flow rate regulations when the temperature changes can be realized only by changing the relative position relationship between the bimetal sheet and the valve body according to different flow rate regulation requirements. One end of the bimetal sheet is fixed, and the other end is used to generate displacement when heated and deformed so as to adjust the flow area of the liquid and change the liquid flow rate. Its regulation of the flow rate completely depends on the temperature of the liquid, greatly improving the control accuracy and reliability. At the same time, it does not require manual or electrical operation, which not only ensures the simplicity of the overall structure, reduces the overall volume of the device, but also simplifies the control process. The liquid flow rate regulating device of the embodiment of the present application can select to increase the liquid flow rate when the liquid temperature rises or decrease the liquid flow rate when the liquid temperature rises according to actual needs, and can meet the flow rate regulation requirements in different fields. The liquid delivery device of the embodiment of the present application includes the above-mentioned liquid flow rate regulating device, and therefore, also has the above-mentioned beneficial effects. Description of the Drawings

[0021] Figure 1 Structural schematic diagram of a liquid flow rate regulating device according to an embodiment of the present application (the liquid flow rate regulating device increases the liquid flow area when the liquid temperature rises).

[0022] Figure 2 Internal structural schematic diagram of a liquid flow rate regulating device according to an embodiment of the present application (the upper cover is removed).

[0023] Figure 3 Cross-sectional structural schematic diagram of a liquid flow rate regulating device according to an embodiment of the present application.

[0024] Figure 4 is Figure 2 Front view structural schematic diagram of the liquid flow rate regulating device of (when the liquid flow area is the smallest).

[0025] Figure 5 Structural schematic diagram of a bimetallic strip according to an embodiment of the present application.

[0026] Figure 6 Cross-sectional structural schematic diagram of a housing and a valve body according to an embodiment of the present application.

[0027] Figure 7 is Figure 4 Structural schematic diagram when the liquid flow rate regulating device of reaches the maximum liquid flow area.

[0028] Figure 8 Cross-sectional structural schematic diagram of a liquid flow rate regulating device according to another embodiment of the present application (the liquid flow rate regulating device reduces the liquid flow area when the liquid temperature rises).

[0029] Figure 9 is Figure 4 Schematic diagram of the liquid flow state in the state.

[0030] Figure 10 is Figure 7 Schematic diagram of the liquid flow state in the state.

[0031] The meanings of the reference numerals in the drawings are as follows:

[0032] 1. Housing; 11. Liquid inlet; 12. Liquid outlet; 13. Bottom shell; 14. Limiting part; 141. Limiting card slot; 15. Upper cover;

[0033] 2. Bimetallic strip; 21. Fixed end; 22. Free end; 23. Active layer; 24. Passive layer;

[0034] 3. Valve body; 31. Block; 32. Channel opening. Detailed Description of the Invention

[0035] The technical solution of the present application will be further elaborated in detail below in conjunction with the specification drawings and specific embodiments.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the implementation of this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0037] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. In the description of this application, unless otherwise stated, the meaning of "plurality" is two or more.

[0038] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0039] The liquid delivery device of the embodiment of this application includes a pipeline (not shown) and a liquid flow regulating device provided on the pipeline. Specific liquid delivery devices can be, for example, temperature-controlled heat dissipation devices. At this time, it is necessary for the liquid flow regulating device to increase the liquid flow area when the liquid temperature rises, so as to increase the liquid flow rate; or, the liquid delivery device can also be an oil delivery system. At this time, it is necessary for the liquid flow regulating device to reduce the liquid flow area when the liquid temperature rises to prevent the liquid from flowing too fast due to the increase in temperature and the decrease in viscosity.

[0040] Please refer to Figure 1 and Figure 2 , the liquid flow regulating device of this embodiment includes a housing 1, a bimetallic strip 2, and a valve body 3.

[0041] As Figure 2 and Figure 3As shown, the housing 1 of this embodiment is rectangular in shape, and in other embodiments, it can also be of other shapes, without specific limitation. At both ends of the housing 1 in the length direction, a liquid inlet 11 and a liquid outlet 12 are respectively provided. Liquid enters the interior of the housing 1 through the liquid inlet 11 and flows out of the housing 1 through the liquid outlet 12. The housing 1 includes an upper cover 15 and a bottom shell 13. The upper cover 15 covers the open end of the bottom shell 13 and is detachably connected to the bottom shell 13. The detachable upper cover 15 facilitates the maintenance and replacement of the components installed in the housing 1. The liquid inlet 11 and the liquid outlet 12 are respectively located at the center of the housing 1 in the width direction. The center lines of the liquid inlet 11 and the liquid outlet 12 are the liquid flow direction, which is also the length direction L of the housing 1.

[0042] As Figure 2 and Figure 4 shown, the valve body 3 is provided in the bottom shell 13 and forms a liquid channel connecting the liquid inlet 11 and the liquid outlet 12. The valve body 3 includes a plurality of blocking blocks 31 and a plurality of channel openings 32 arranged adjacent to the plurality of blocking blocks 31. The valve body 3 is arranged on the side close to the liquid outlet 12. The plurality of blocking blocks 31 are arranged in parallel in the width direction of the housing 1, and each blocking block 31 is respectively arranged parallel to the long side of the housing 1. A channel opening 32 is formed between two adjacent blocking blocks 31. To make the liquid flow rate flowing out of the housing 1 more uniform, the specifications of each blocking block 31 can be set to be the same, that is, the length, width, and height of each blocking block 31 are equal, and the sizes of all the channel openings 32 are also set to be equal. The specifications, materials, etc. of each blocking block 31 can be designed according to actual needs.

[0043] As Figure 4 and Figure 5 shown, the bimetallic strip 2 is provided on the liquid channel. The bimetallic strip is also called a thermal bimetallic strip and includes an active layer 23 and a passive layer 24 arranged in a stacked manner. The thermal expansion coefficient of the active layer 23 is greater than that of the passive layer 24, and the active layer 23 is fixedly connected to the passive layer 24. When the temperature rises, the deformation amount of the active layer 23 is greater than that of the passive layer 24, and the bimetallic strip 2 will bend towards the passive layer 24 side (as Figure 7 shown). The bimetallic strip 2 is a device that can convert temperature changes into mechanical displacements. They expand at different rates when heated, including but not limited to steel and copper (such as brass). Different expansion forces force the flat belt to bend in one direction when heated.

[0044] In this embodiment, the two ends of the bimetallic strip 2 in the length direction are respectively a fixed end 21 and a free end 22. The fixed end 21 is fixed to the housing 1 and is arranged close to the liquid inlet 11, and the free end 22 is arranged close to the valve body 3. The free end 22 is used to deform when heated.

[0045] As Figure 3 and Figure 6As shown in the figure, to facilitate the installation and disassembly of the bimetallic strip 2, limit parts 14 can be respectively arranged on the upper cover 15 and the bottom case 13 of the housing 1. A plurality of limit card slots 141 are respectively formed in each limit part 14. The number of the limit card slots 141 is equal to the number of the bimetallic strips 2. One bimetallic strip 2 is clamped in each limit card slot 141. The upper and lower ends (in the illustrated direction, that is, the vertical direction of the upper cover 15) of the fixed end 21 of the bimetallic strip 2 are respectively clamped in the limit card slots 141, which not only ensures the reliability of the installation, but also facilitates the disassembly and assembly of the bimetallic strip 2, and is convenient for replacing or maintaining the bimetallic strip 2. At the same time, the bimetallic strips 2 are respectively arranged independently, and a certain bimetallic strip 2 can be disassembled and assembled alone, and at this time, it will not affect other bimetallic strips 2. At the same time, when a certain bimetallic strip 2 fails, it will not have a great impact on the whole device, and at this time, the normal use function of the liquid flow regulating device can still be ensured.

[0046] In this embodiment, the bimetallic strips 2 are respectively arranged in parallel like the stoppers 31 and are correspondingly arranged with the stoppers 31 or the channel openings 32.

[0047] As Figure 4 shown, when the bimetallic strip 2 is configured to increase the liquid flow area when heated and deformed, the free end 22 is correspondingly arranged with the channel opening 32, that is, the bimetallic strip 2 is located at the channel opening 32 before deformation and blocks the channel opening 32. At this time, the liquid flow area is the smallest (the liquid flow state at this time is as Figure 9 shown). To ensure the normal operation of the liquid flow regulating device and the liquid conveying device, a certain gap needs to be set between the bimetallic strip 2 and the channel opening 32 as the minimum liquid flow gap to prevent the channel opening 32 from being completely blocked. The minimum flow gap is designed according to specific conditions. When the bimetallic strip 2 is heated and deformed, the free end 22 deflects towards the adjacent stopper 31, reducing the blockage of the channel opening 32, thereby increasing the liquid flow area. The higher the temperature, the greater the deformation amount, and the larger the flow area. The bimetallic strip 2 can automatically adjust the liquid flow according to the change of the liquid temperature, eliminating manual operation. At the same time, the reliability and accuracy of the adjustment are ensured.

[0048] As Figure 8As shown in the figure, when the bimetal 2 is configured to reduce the liquid flow area when heated and deformed, the free end 22 is arranged corresponding to the stopper 31, that is, the bimetal 2 is located at the stopper 31 when not deformed. At this time, the channel opening 32 is not blocked at all, and the liquid flow area is the largest. At this time, the bimetal 2 still needs to be set with a minimum flow gap, that is, when the bimetal 2 undergoes the maximum deformation, there needs to be a certain gap with the channel opening 32 to ensure that the liquid can flow. In this mode, when the bimetal 2 is heated and deformed, the free end 22 deflects towards the adjacent channel opening 32, increasing the blockage of the channel opening 32, thereby reducing the liquid flow area. As the temperature gets higher and higher, the deformation amount gets larger and larger, the blockage of the channel opening 32 gets larger and larger, and the flow area gradually decreases accordingly.

[0049] As Figure 5 shown, when installing the bimetal 2, it is necessary to ensure that the active layer 23 of the bimetal 2 is on the same side of the bimetal 2, that is, the active layer 23 is all arranged towards the same side, and the passive layer 24 is all arranged towards the other side, so as to ensure that the bimetal 2 bends in the same direction when heated and deformed. However, since the stopper 31 and the channel opening 32 are adjacent, it is not particularly limited which side the specific active layer 23 and passive layer 24 are set on, as long as the bending direction of the bimetal 2 can be ensured to be the same (for example, Figure 5 in, it is possible to arrange all the active layers 23 on the upper part as Figure 5 shown, and all the passive layers 24 on the lower part; or vice versa, arrange all the active layers 23 on the lower part and all the passive layers 24 on the upper part), reducing the installation difficulty of the bimetal 2.

[0050] When designing the bimetal 2, the maximum deformation amount of the bimetal 2 should not exceed the adjacent stopper 31 or the adjacent channel opening 32 (as Figure 7 shown, at this time the bimetal 2 is in the state of maximum deformation amount, and the liquid flow state at this time is as Figure 10 shown). For example, when the bimetal 2 is configured to increase the liquid flow area when heated and deformed, when the bimetal 2 undergoes the maximum deformation amount, its free end 22 cannot reach the position corresponding to the adjacent other channel opening 32 to prevent excessive deformation from blocking the next channel opening 32; similarly, when the bimetal 2 is configured to reduce the liquid flow area when heated and deformed, when the bimetal 2 undergoes the maximum deformation amount, its free end 22 cannot reach the position corresponding to the adjacent other stopper 31 to prevent excessive deformation from reducing the blockage of the next channel opening 32.

[0051] In addition to the above design, the liquid flow regulating device can also be in other forms. For example, the stopper 31 is arranged on the side close to the liquid inlet 11, while the fixed end 21 of the bimetallic strip 2 is arranged on the side close to the liquid outlet 12, and the same effect can be achieved using the same principle. Another example is that the stopper 31 and the bimetallic strip 2 are arranged in a direction perpendicular to the liquid channel. Specifically, the specific installation positions of the stopper 31 and the bimetallic strip 2 are not limited as long as the flow area of the liquid channel can be changed by thermal deformation, and they will not be listed one by one here.

[0052] The liquid flow regulating device and the liquid conveying device according to the embodiments of the present application have a simple structure, a small volume, and a small flow resistance. They have a temperature self-adaptive regulation function and reduce the temperature control error. By setting the bimetallic strip, the structures of piston sealing and electrical control in the traditional hydraulic valve are eliminated, avoiding the leakage and energy loss problems caused by the gap between the piston and the seal in the traditional hydraulic valve, reducing the use of electrical components, reducing the failure risk and volume requirements, and improving the reliability, safety, and stability of the device. It does not require manual control and automatically adjusts the opening and closing state of the channel port and the flow control through an intelligent temperature sensing and feedback mechanism, achieving more accurate, stable, and reliable temperature control, reducing the risk factors generated by manual operation, and reducing the labor cost. The device can accurately and stably control the liquid temperature, improving the accuracy of temperature control. The device can design different flow control methods according to specific application scenarios, enhancing the flexibility and adaptability of the device and meeting the different needs of different industries. The device has a long service life, reducing the maintenance cost, and at the same time, the maintenance is very convenient. The device provides a simple, efficient, and reliable temperature control solution, which is of great significance for multiple fields such as aerospace technology, electronic information technology, and transportation equipment manufacturing industry.

[0053] It should be noted that in this article, the term "including", "comprising", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article, or device including that element.

[0054] As described above, only the specific embodiments of the present application are provided, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A liquid flow regulating device, characterized in that, Comprising a housing, and at least one bimetallic strip and a valve body disposed within the housing; The housing is provided with a liquid inlet and a liquid outlet; The valve body is disposed within the housing and forms a liquid passage communicating the liquid inlet with the liquid outlet; The bimetallic strip is fixedly disposed on the housing, and the bimetallic strip deforms due to temperature change to change the flow area of the liquid passage.

2. The liquid flow regulating device according to claim 1, characterized in that, The valve body includes a plurality of stoppers, and the plurality of stoppers are arranged side by side along the liquid flow direction, and a channel opening is formed between every two adjacent stoppers; The plurality of bimetallic strips are arranged side by side along the liquid flow direction, and the free ends are correspondingly arranged with the channel openings.

3. The liquid flow regulating device according to claim 2, characterized in that, The plurality of stoppers are arranged in parallel at equal intervals, and the plurality of bimetallic strips are arranged in parallel at equal intervals.

4. The liquid flow regulating device according to claim 2, characterized in that, The bimetallic strip includes an active layer and a passive layer arranged in a stacked manner, and the coefficient of thermal expansion of the active layer is greater than that of the passive layer.

5. The liquid flow regulating device according to claim 4, characterized in that, Each bimetallic strip is configured to bend in the same direction when heated.

6. The liquid flow regulating device according to claim 1, characterized in that, A minimum flow gap is provided between the bimetallic strip and the valve body.

7. The liquid flow regulating device according to claim 1, characterized in that, The housing includes an upper cover and a bottom case, the upper cover covers the open end of the bottom case and is detachably connected to the bottom case.

8. The liquid flow regulating device according to claim 7, characterized in that, Limiting card slots are respectively provided inside the upper cover and the bottom case, the limiting card slots are provided at one end of the housing close to the liquid inlet, and the limiting card slots are used for clamping the fixed end of the bimetallic strip to fix the fixed end of the bimetallic strip on the housing.

9. The liquid flow regulating device according to claim 2, characterized in that, Each bimetallic strip is configured such that the maximum deformation amount does not exceed the adjacent stopper or the adjacent channel opening.

10. A liquid conveying device, characterized in that, Comprising a pipeline and a liquid flow regulating device according to any one of claims 1 to 9, and the liquid flow regulating device is connected to the pipeline.

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