Small-size square expansion tank for heat pump

Abstract

The utility model provides a small-size square expansion tank for a heat pump, which relates to the technical field of expansion tanks and comprises an upper tank body, a first inner turned edge is arranged at the edge of the upper tank body, and a lower tank body is arranged at the bottom of the upper tank body. In the installation process, the upper elastic film and the upper can body are sequentially placed after the can body is flatly placed, at the moment, the first inner curled edge and the second inner curled edge clamp the outer convex edge, then the upper can body is pressed downwards with force, at the moment, the first inner curled edge and the second inner curled edge extrude the outer convex edge to compress the outer convex edge, and the first inner curled edge and the second inner curled edge make contact with each other. Then the two clamping sleeves are inserted into the upper tank body from the two sides and loosened, at the moment, the outer convex edge rebounds to fill the inner space of the two clamping sleeves, the first inner turned edge and the second inner turned edge are extruded to enable the clamping sleeves not to fall off, and then the device can be installed, and when the device is dismantled, the upper tank body is pressed downwards to enable the outer convex edge to shrink, the clamping sleeves can be dismantled, and overall disassembly and assembly are convenient; the size is small, the subsequent disassembly and maintenance difficulty is greatly reduced, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion tanks, in particular to a small-volume square expansion tank for a heat pump. Background Art

[0002] An expansion tank is a water supply device that uses the principle that the product of gas pressure and volume at a certain temperature is equal to a constant. It uses the property of water's extremely low compressibility to store water in the tank with external force. The gas is compressed and the pressure increases. When the external force disappears, the compressed gas expands and the water can be discharged. When the expansion tank is used in a thermal system, it is mainly used to absorb the volume of the working medium that increases due to temperature changes. When used in a water supply system, it is mainly used to absorb the water hammer impact caused by the opening and closing of valves, water pumps, etc., as well as a small amount of water replenishment at night to put the main pump of the water supply system into sleep mode, thereby reducing electricity consumption and extending the service life of the water pump.

[0003] At present, the expansion tank used in the heat pump is usually composed of an elliptical tank body and an internal air bag layer. The outer tank body is usually formed in one piece, and the air bag is mainly inserted into the interior through the opening of the tank body and fixed. The overall structure is bloated, the appearance is poor, and it is difficult to disassemble and repair. The practicality needs to be improved. Therefore, in response to the above problems, we propose a new type of small-volume square expansion tank for heat pumps. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that the expansion tank for a heat pump is usually composed of an elliptical tank body and an internal air bag layer, the external tank body is usually formed in one piece, the air bag is mainly inserted into the interior through the opening of the tank body and fixed, the overall structure is bloated, the aesthetics is poor, and the disassembly and maintenance are difficult, and the practicality needs to be improved. A small-volume square expansion tank for a heat pump is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a small-volume square expansion tank for a heat pump, comprising an upper tank body, a first inner curled edge is provided at the edge of the upper tank body, a lower tank body is provided at the bottom of the upper tank body, a second inner curled edge is provided at the edge of the lower tank body, an outer convex edge is engaged between the inner surface walls of the first inner curled edge and the second inner curled edge, an elastic membrane is provided between the inner surface walls of the outer convex edges, and a clamping sleeve is engaged with the outside of the first inner curled edge and the second inner curled edge.

[0006] Preferably, a water inlet valve is installed on the front surface of the lower tank body, and an air charging valve is installed on the outer surface of one side of the upper tank body.

[0007] Preferably, the upper tank body is in an upwardly convex shape, the lower tank body is in a downwardly convex shape, and the elastic membrane is in a downwardly convex shape.

[0008] Preferably, reinforcing ribs are provided at the bottom of the elastic membrane.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] 1. In the utility model, during installation, the tank body is laid flat and then the elastic membrane and the upper tank body are placed in turn. At this time, the first inner curled edge and the second inner curled edge will clamp the outer convex edge, and then the upper tank body is pressed down with force. At this time, the first inner curled edge and the second inner curled edge will squeeze the outer convex edge to compress it, and the two are in contact. Subsequently, two ferrules are inserted from both sides and the upper tank body is released. At this time, the outer convex edge rebounds to fill the space inside the two, and squeezes the first inner curled edge and the second inner curled edge so that the ferrule cannot fall off, and the installation of the device is completed. When dismantling, the upper tank body is pressed down to shrink the outer convex edge and the ferrule can be removed. The overall disassembly and assembly is convenient, the size is compact, the difficulty of subsequent disassembly and assembly and maintenance is greatly reduced, and the practicality is high.

[0011] 2. In the utility model, when in use, the water inlet valve and the high-pressure side pipeline of the heat pump host can be connected. When the water pressure in the high-pressure side pipeline of the heat pump is greater than the air pressure between the upper tank body and the elastic membrane, water will enter between the lower tank body and the elastic membrane, and squeeze the elastic membrane to deform toward the upper tank body, thereby compressing the gas chamber. When the water pressure is lower than the air pressure, the elastic membrane will gradually restore the deformation and squeeze the internal water into the high-pressure side pipeline of the heat pump, thereby maintaining the water pressure balance in the pipeline, thereby stabilizing the pressure of the heat pump system and reducing pressure fluctuations, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A three-dimensional diagram of a small-volume square expansion tank for a heat pump proposed in the utility model;

[0013] Figure 2 Another perspective view of the small-volume square expansion tank for heat pump proposed by the utility model;

[0014] Figure 3 The utility model provides an expanded diagram of a small-volume square expansion tank for a heat pump;

[0015] Figure 4 The utility model provides a cross-sectional view of a small-volume square expansion tank for a heat pump.

[0016] Legend: 1. Upper tank body; 11. Inflating valve; 12. First inner curling edge; 2. Elastic membrane; 21. Outer convex edge; 22. Reinforcing rib; 3. Lower tank body; 31. Water inlet valve; 32. Second inner curling edge; 4. Card sleeve. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0019] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a small-volume square expansion tank for a heat pump, comprising an upper tank body 1, a first inner curl 12 is provided at the edge of the upper tank body 1, a lower tank body 3 is provided at the bottom of the upper tank body 1, a second inner curl 32 is provided at the edge of the lower tank body 3, an outer convex edge 21 is engaged between the inner surface walls of the first inner curl 12 and the second inner curl 32, an elastic membrane 2 is provided between the inner surface walls of the outer convex edge 21, a ferrule 4 is engaged outside the first inner curl 12 and the second inner curl 32, an inlet valve 31 is installed on the front surface of the lower tank body 3, an inflation valve 11 is installed on the outer surface of one side of the upper tank body 1, the upper tank body 1 is in an upward convex shape, the lower tank body 3 is in a downward convex shape, and the elastic membrane 2 is in a downward convex shape.

[0020] The effect achieved by the entire embodiment 1 is that when installing the device, the lower tank body 3 is first placed flat, and then the elastic membrane 2 is placed inside the lower tank body 3, and the outer convex edge 21 is pressed into the inside of the second inner curling edge 32 so that the two fit tightly together. Then the upper tank body 1 is placed on the top of the lower tank body 3 and pressed down. At this time, the upper half of the outer convex edge 21 of the elastic membrane 2 will be stuck in the inside of the first inner curling edge 12. At this time, the lower tank body 3 is pressed tightly to make it in close contact with the upper tank body 1, so that the outer convex edge 21 is compressed, and then the two ferrules 4 are inserted from both sides. At this time, the ferrules 4 will be stuck on the outside of the first inner curling edge 12 and the second inner curling edge 32. Then, loosening the upper tank body 1 will cause the outer convex edge 21 to rebound, thereby filling the internal space of the first inner curling edge 12 and the second inner curling edge 32 and applying an extrusion force in the up and down directions, so that the ferrule 4 cannot fall off. After the installation of the device is completed, when dismantling, the upper tank body 1 is pressed down to shrink the outer convex edge 21 and the ferrule 4 can be removed. The overall disassembly and assembly is convenient, the size is compact, and the difficulty of subsequent disassembly and assembly and maintenance is greatly reduced. It is highly practical and has a full square shape as a whole, and is highly aesthetic. When in use, the water inlet valve 31 is connected to the high-pressure side pipeline of the heat pump host. When the water pressure in the high-pressure side pipeline of the heat pump is greater than the air pressure value between the upper tank body 1 and the elastic membrane 2, water will enter between the lower tank body 3 and the elastic membrane 2, and squeeze the elastic membrane 2 to deform toward the upper tank body 1, thereby compressing the gas chamber. When the water pressure is less than the air pressure, the elastic membrane 2 will gradually restore the deformation and squeeze the internal water to replenish the high-pressure side pipeline of the heat pump, thereby maintaining the water pressure balance in the pipeline, thereby stabilizing the pressure of the heat pump system and reducing pressure fluctuations, and the use effect is better.

[0021] Embodiment 2, as Figure 1-Figure 4 As shown, a reinforcing rib 22 is provided at the bottom of the elastic membrane 2 .

[0022] The effect achieved by the entire embodiment 2 is that by adding the reinforcing ribs 22 at the bottom of the elastic membrane 2, the tensile strength of the elastic membrane 2 is increased, thereby avoiding damage due to excessive expansion.

[0023] Working principle: When installing the device, first lay the lower tank body 3 flat, then place the elastic membrane 2 inside the lower tank body 3, and press the outer convex edge 21 into the inside of the second inner curling edge 32 so that the two fit tightly, then place the upper tank body 1 on the top of the lower tank body 3 and press it down, at this time, the upper half of the outer convex edge 21 of the elastic membrane 2 will be stuck in the inside of the first inner curling edge 12, at this time, press the lower tank body 3 so that it is in close contact with the upper tank body 1, so that the outer convex edge 21 is compressed, and then the two ferrules 4 are inserted from both sides, at this time, the ferrules 4 will be stuck on the outside of the first inner curling edge 12 and the second inner curling edge 32, and then release the upper tank body 1 to make the outer convex edge 21 rebound, so that the internal space of the first inner curling edge 12 and the second inner curling edge 32 is filled and the extrusion force in the up and down directions is applied, so that the ferrule 4 cannot fall off, and the installation is completed. The installation of the device can be carried out by pressing down the upper tank body 1 to shrink the outer convex edge 21, so that the ferrule 4 can be removed. The overall disassembly and assembly is convenient, the size is compact, and the difficulty of subsequent disassembly and assembly and maintenance is greatly reduced. It is highly practical, and the overall shape is a full square with high aesthetics. When in use, it can be done by connecting the water inlet valve 31 and the high-pressure side pipeline of the heat pump host. When the water pressure in the high-pressure side pipeline of the heat pump is greater than the air pressure value between the upper tank body 1 and the elastic membrane 2, water will enter between the lower tank body 3 and the elastic membrane 2, and squeeze the elastic membrane 2 to deform toward the upper tank body 1, thereby compressing the gas chamber. When the water pressure is less than the air pressure, the elastic membrane 2 will gradually recover the deformation and squeeze the internal water into the high-pressure side pipeline of the heat pump, thereby maintaining the water pressure balance in the pipeline, thereby stabilizing the pressure of the heat pump system and reducing pressure fluctuations, and the use effect is better.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A small-volume square expansion tank for a heat pump, comprising an upper tank body (1), characterized in that: A first inner curled edge (12) is provided at the edge of the upper tank body (1), a lower tank body (3) is provided at the bottom of the upper tank body (1), a second inner curled edge (32) is provided at the edge of the lower tank body (3), an outer convex edge (21) is engaged between the inner surfaces of the first inner curled edge (12) and the second inner curled edge (32), an elastic membrane (2) is provided between the inner surfaces of the outer convex edge (21), and a clamping sleeve (4) is engaged between the outside of the first inner curled edge (12) and the second inner curled edge (32).

2. The small-volume square expansion tank for heat pump according to claim 1, characterized in that: A water inlet valve (31) is installed on the front surface of the lower tank body (3), and an air charging valve (11) is installed on one side outer surface of the upper tank body (1).

3. The small-volume square expansion tank for a heat pump according to claim 2, characterized in that: The upper tank body (1) is in an upwardly convex shape, the lower tank body (3) is in a downwardly convex shape, and the elastic membrane (2) is in a downwardly convex shape.

4. The small-volume square expansion tank for a heat pump according to claim 3, characterized in that: The bottom of the elastic membrane (2) is provided with a reinforcing rib (22).

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