Plate heat exchanger and heat pump for heating thereof

Abstract

The utility model relates to the technical field of heating, and discloses a plate heat exchanger and a heat pump for heating thereof, which comprise a starting plate, an end plate arranged on one side of the starting plate, a plurality of plate sheets arranged between the starting plate and the end plate, two positioning pins and four fastening bolts fixed between the starting plate and the end plate in a penetrating manner, the lock catch mechanisms are movably arranged on one sides of the plate pieces, the plate pieces are clamped and fixed through the corresponding lock catch mechanisms, each lock catch mechanism comprises a fixing block, a limiting frame, a shifting block and clamping heads, the fixing blocks are fixedly arranged on one sides of the plate pieces, the limiting frames are fixedly arranged on one sides of the fixing blocks, and the two clamping heads are symmetrically fixed to the sides, away from the fixing blocks, of the shifting blocks. The two clamping heads lock and limit the corresponding limiting frames, the lock catch mechanism fixes and positions the sheet bar, the fastening bolts can be effectively prevented from loosening in cooperation with the nylon nuts, and the problems that under the working condition of high-frequency vibration of the sheet bar, connection points are prone to loosening, and medium leakage is caused by a gap between the gasket and the sheet bar are solved.

Description

Technical Field

[0001] This utility model belongs to the field of heating technology, specifically, it relates to a plate heat exchanger and its heating heat pump. Background Technology

[0002] Plate heat exchangers in heating heat pumps are highly efficient heat exchange devices. Their main function is to transfer the heat absorbed by the heat pump system to the heating medium (such as hot water or air) to achieve heating.

[0003] The prior art discloses a heat pump for heating (CN220817880U), including an outdoor unit, a heating component, and a heat collection component. The outdoor unit has a compressor located on its front side and a plate heat exchanger located on its rear side. The compressor's output port is connected to the plate heat exchanger's input port via a connecting pipe. The compressor and plate heat exchanger's input terminals are electrically connected to the output terminals of a microcontroller. The heating component is located outside the outdoor unit and is connected to the plate heat exchanger's input port via a heat pipe. The heat collection component is located on the front surface of the outdoor unit and is connected to the compressor. This heat pump can raise the indoor temperature faster, even when ventilation is required. It consumes little energy, directly utilizes heat from the outside air, and is highly safe, meeting the needs of daily heating or rapid heating in special situations.

[0004] Research revealed that the plate heat exchangers used in existing technologies are the commonly available models on the market. However, most commercially available plate heat exchangers are fastened with bolts, which means that during operation, the connection points are prone to loosening under high-frequency vibration of the plates. This can lead to gaps between the gaskets and the plates, causing media leakage. Furthermore, since the plates are only fixed together by locating pins and bolts, the vibration between the plates can cause friction between them, resulting in wear on the gaskets and affecting the service life of the plates.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A plate heat exchanger, comprising

[0008] A starting plate, with an end plate on one side, and multiple plates between the starting plate and the end plate. Two locating pins and four fastening bolts are fixed through the starting plate and the end plate, and the multiple plates are clamped and limited by the two locating pins.

[0009] A locking mechanism is movably disposed on one side of the plates. The plates are locked together by corresponding locking mechanisms. The locking mechanism includes a fixing block, a limiting frame, a lever block, and locking heads. The fixing block is fixedly disposed on one side of the plates. The limiting frame is fixedly disposed on one side of the fixing block. The lever block is movably disposed inside the fixing block. Two locking heads are symmetrically fixed on the side of the lever block away from the fixing block. The two locking heads lock and limit the corresponding limiting frame.

[0010] In a preferred embodiment of this utility model, two input ports are provided above the starting plate, and two output ports are provided above the end plate. Two positioning pins are disposed through the center of the two input ports and the two output ports. Four fastening bolts are arranged in an array at the four corners between the starting plate and the end plate. Nylon nuts of different specifications are correspondingly provided on the two positioning pins and the four fastening bolts. The six nylon nuts are threadedly engaged with the corresponding positioning pins and fastening bolts.

[0011] In a preferred embodiment of this utility model, a washer is provided on one side of the plate, the width of the fixing block corresponds to the common width of the plate and the washer, and each plate forms a space for the flow medium through the corresponding washer.

[0012] In a preferred embodiment of this utility model, the fixing block is a C-shaped block, a collar is fixedly provided on the inner side of the fixing block, an L-shaped lever is slidably provided inside the collar, and two locking heads are respectively provided on the upper and lower sides of the collar.

[0013] In a preferred embodiment of this utility model, a spring is fixedly provided between the bottom surface of the lever and the inner bottom surface of the fixed block, and the fixed block is elastically connected to the lever via the spring.

[0014] In a preferred embodiment of this utility model, the limiting frame and the fixing block are similar in shape, the limiting frame corresponds to the inner shape of the fixing block, and the corresponding limiting frame is snapped into the fixing block.

[0015] In a preferred embodiment of this utility model, the limiting frame has two slots on the side away from the fixing block, the two slots corresponding to the size of the card head, and the card head is locked in the corresponding slot.

[0016] A heat pump for heating includes a casing, in which all of the above-mentioned plate heat exchangers are installed. A heating component is fixedly installed on one side of the casing, and a compressor is fixedly installed inside the casing. The output port of the compressor is connected to the input port on the starting plate side through a connecting pipe, and the heating component is connected to the input port on the starting plate side through a heat-conducting pipe.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. By setting up a locking mechanism, the fixing blocks between each plate engage with the limiting frame, the locking head fixes the limiting frame, and then the two positioning pins set at the top and bottom clamp and position the plates, so that each plate is limited in position from three directions, thereby avoiding friction and vibration between the plates during operation, thus protecting the washers and extending the service life of the plates.

[0019] 2. By setting up nylon nuts and locking mechanisms, the locking mechanism can fix and position the plates together. In conjunction with the nylon nuts, the nylon nuts can effectively prevent the fastening bolts from loosening, solving the problems of easy loosening of connection points under high-frequency vibration of plates and medium leakage caused by gaps between the washers and plates.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a schematic diagram of the overall rear cross-sectional structure of this utility model;

[0023] Figure 2 This is a schematic diagram showing the installation between the end plate and the plate of this utility model;

[0024] Figure 3 This is a side view of the starting plate, end plate, and plates used in this utility model;

[0025] Figure 4 This is a schematic diagram of the assembly of the plate and the locking mechanism of this utility model;

[0026] Figure 5 This utility model Figure 4 Enlarged diagram of point A in the middle.

[0027] In the diagram: 10. Chassis; 11. Heating component; 12. Compressor; 13. Heat pipe; 14. Connecting pipe; 15. Starting plate; 16. End plate; 17. Plate; 18. Positioning pin; 19. Fastening bolt; 20. Washer; 21. Fixing block; 22. Limiting bracket; 23. Nylon nut; 24. Bayonet; 25. Collar; 26. Spring; 27. Pulling block; 28. Clamping head. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0029] A plate heat exchanger, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the device includes a starting plate 15, an end plate 16 on one side of the starting plate 15, and multiple plates 17 between the starting plate 15 and the end plate 16. Two positioning pins 18 and four fastening bolts 19 are fixed through the starting plate 15 and the end plate 16. The multiple plates 17 are clamped and limited by the two positioning pins 18. A locking mechanism is movably disposed on one side of the plates 17. Each plate 17 is engaged and fixed by a corresponding locking mechanism. The locking mechanism includes a fixing block 21, a limiting frame 22, a toggle block 27, and a locking head 28. The fixing block 21 is fixedly disposed on one side of the plates 17, the limiting frame 22 is fixedly disposed on one side of the fixing block 21, and the toggle block 27 is movably disposed inside the fixing block 21. Two locking heads 28 are symmetrically fixed on the side of the toggle block 27 away from the fixing block 21. The two locking heads 28 lock and limit the corresponding limiting frame 22.

[0030] Specifically, this device uses two positioning pins 18 to clamp and fix the plate 17, and uses four fastening bolts 19 to fix the position of the end plate 16 and the starting plate 15, so that the plates between the starting plate 15 and the end plate 16 can be tightly connected, thereby allowing the locking mechanism's limiting frame 22 to be inserted into the fixing block 21. At the same time, the locking head 28 can fix the limiting frame 22, thereby fixing the position of the corresponding plate 17.

[0031] like Figure 2 As shown, two input ports are provided above the starting plate 15, and two output ports are provided above the end plate 16. Two positioning pins 18 are disposed through the center of the two input ports and the two output ports. Four fastening bolts 19 are arranged in an array at the four corners between the starting plate 15 and the end plate 16. Nylon nuts 23 of different specifications are correspondingly provided on the two positioning pins 18 and the four fastening bolts 19. The six nylon nuts 23 are threaded into the corresponding positioning pins 18 and fastening bolts 19. Figure 3 and Figure 4 As shown, a washer 20 is provided on one side of the plate 17, and the width of the fixing block 21 corresponds to the common width of the plate 17 and the washer 20. Each plate 17 forms a space for the flow medium through the corresponding washer 20.

[0032] Specifically, plate 17 is a basic style commonly found in the market. Its front side is a grooved surface for medium flow, and a slot for engaging the washer 20 is provided on the grooved surface. The back side of plate 17 is a grooved surface for connecting the washer 20. Among the multiple plates 17, there are two insulating end plates, located at the front and rear ends of the multiple plates 17 respectively, serving as the start and end plates for installing the plates 17. The washer 20 comes in two forms with the same shape but different orientations, and their functions are also different. Plates 17 with different types of washers 20 are also alternately arranged during installation. The alternating arrangement of the plates 17 forms multiple parallel flow channels, allowing hot and cold fluids to flow through adjacent channels respectively, achieving the effect of not mixing. In this device, by setting nylon nuts 23 and locking mechanisms, the locking mechanism is used to fix and position the plates 17 together. Combined with the anti-loosening properties of nylon nuts 23, the connection points of the fastening bolts 19 can be effectively prevented from loosening under the condition of high-frequency vibration of the plates 17. This solves the problem of medium leakage caused by gaps between the washers and plates 17.

[0033] like Figure 4 and Figure 5 As shown, the fixing block 21 is a C-shaped block, and a collar 25 is fixedly installed on the inner side of the fixing block 21. An L-shaped lever 27 is slidably installed inside the collar 25, and two locking heads 28 are respectively installed on the upper and lower sides of the collar 25; Figure 5 As shown, a spring 26 is fixedly installed between the bottom surface of the toggle block 27 and the inner bottom surface of the fixing block 21, and the fixing block 21 is elastically connected to the toggle block 27 through the spring 26; Figure 5 As shown, the limiting frame 22 and the fixing block 21 have similar shapes. The limiting frame 22 corresponds to the inner shape of the fixing block 21, and the corresponding limiting frame 22 is snapped into the fixing block 21. Figure 5 As shown, the limiting frame 22 has two slots 24 on the side away from the fixing block 21. The two slots 24 correspond to the size of the locking head 28, and the locking head 28 is locked in the corresponding slot 24.

[0034] Specifically, in this device, the width of the fixed block 21 after engaging with the limiting frame 22 is equal to or less than the thickness of the washer 20. The locking head 28 is a J-shaped block, and the locking slot 24 corresponds to the maximum length and width of the locking head 28. In use, the plate 17 is installed between the two positioning pins 18. When the two plates 17 approach each other, the limiting frame 22 will simultaneously engage with the inside of the fixed block 21. At the same time, the two latches will push the locking head 28 downwards. At this time, the pushing block 27 compresses the spring 26, and the locking head 28 enters the locking slot 24. When the spring 26 returns to its original position and the lever 27 resets, the latch 28 can lock the latch 24. By setting a locking mechanism, the fixing blocks 21 between each plate 17 engage with the limiting frame 22, and the latch 28 fixes the limiting frame 22. Then, with the help of the two positioning pins 18 set at the top and bottom, the plates 17 are clamped and positioned, so that each plate 17 is limited in position from three directions, thereby avoiding friction and vibration between the plates 17 during operation, thus protecting the washer 20 and extending the service life of the plates 17.

[0035] A heat pump for heating includes a casing 10, such as Figure 1 As shown, a heating component 11 is fixedly installed on one side of the casing 10, and a compressor 12 is fixedly installed inside the casing 10. The output port of the compressor 12 is connected to the input port on the side of the starting plate 15 through a connecting pipe 14. The heating component 11 is connected to the input port on the side of the starting plate 15 through a heat conduction pipe 13. By setting the plate heat exchanger described above, the device has the characteristics of extending the service life of the plates 17 and preventing the fastening bolts 19 from loosening and improving the fixing effect.

[0036] Specifically, the two inlets above the starting plate 15 are used for cold water and hot water input, respectively. Similarly, the two outlets above the end plate 16 are used for cold water and hot water output, respectively. The heat pipe 13 is connected to the hot water inlet on the starting plate 15, and the connecting pipe 14 is connected to the cold water inlet on the starting plate 15. At this time, the compressor 12 and the heating component 11 provide the medium to the plate 17. After heat exchange between the plate 17 and the gasket 20, the heating needs of the room can be met.

[0037] It is worth noting that the casing 10, heating component 11, compressor 12, heat pipe 13 and connecting pipe 14 appearing in this device are described in detail in the prior art of a heating heat pump (CN220817880U), and will not be repeated here.

[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A plate heat exchanger, characterized in that, include A starting plate (15) is provided with an end plate (16) on one side of the starting plate (15). Multiple plates (17) are provided between the starting plate (15) and the end plate (16). Two positioning pins (18) and four fastening bolts (19) are fixed through the starting plate (15) and the end plate (16). The multiple plates (17) are clamped and limited by the two positioning pins (18). The locking mechanism is movably disposed on one side of the plate (17). Each plate (17) is engaged and fixed with the corresponding locking mechanism. The locking mechanism includes a fixing block (21), a limiting frame (22), a lever block (27), and a locking head (28). The fixing block (21) is fixedly disposed on one side of the plate (17). The limiting frame (22) is fixedly disposed on one side of the fixing block (21). The lever block (27) is movably disposed inside the fixing block (21). Two locking heads (28) are symmetrically fixed on the side of the lever block (27) away from the fixing block (21). The two locking heads (28) lock and limit the corresponding limiting frame (22).

2. A plate heat exchanger according to claim 1, characterized in that, Two input ports are provided above the starting plate (15), and two output ports are provided above the end plate (16). Two positioning pins (18) are provided through the center of the two input ports and the two output ports. Four fastening bolts (19) are arranged in an array at the four corners between the starting plate (15) and the end plate (16). Different specifications of nylon nuts (23) are provided on the two positioning pins (18) and the four fastening bolts (19). The six nylon nuts (23) are threadedly engaged with the corresponding positioning pins (18) and fastening bolts (19).

3. A plate heat exchanger according to claim 1, characterized in that, A washer (20) is provided on one side of the plate (17), and the width of the fixing block (21) corresponds to the common width of the plate (17) and the washer (20). Each plate (17) forms a space for the flow medium through the corresponding washer (20).

4. A plate heat exchanger according to claim 1, characterized in that, The fixing block (21) is a C-shaped block. A collar (25) is fixedly provided on the inner side of the fixing block (21). An L-shaped lever (27) is slidably provided inside the collar (25). Two clips (28) are respectively provided on the upper and lower sides of the collar (25).

5. A plate heat exchanger according to claim 4, characterized in that, A spring (26) is fixedly installed between the bottom surface of the toggle block (27) and the inner bottom surface of the fixing block (21), and the fixing block (21) is elastically connected to the toggle block (27) through the spring (26).

6. A plate heat exchanger according to claim 5, characterized in that, The limiting frame (22) is similar in shape to the fixing block (21), the limiting frame (22) corresponds to the inner shape of the fixing block (21), and the corresponding limiting frame (22) is snapped into the fixing block (21).

7. A plate heat exchanger according to claim 6, characterized in that, The limiting frame (22) has two slots (24) on the side away from the fixing block (21). The two slots (24) correspond to the size of the card head (28), and the card head (28) is locked in the corresponding slot (24).

8. A heat pump for heating, comprising a casing (10), characterized in that, The casing (10) is equipped with a plate heat exchanger as described in any one of claims 1-7. A heating component (11) is fixedly installed on one side of the casing (10). A compressor (12) is fixedly installed inside the casing (10). The output port of the compressor (12) is connected to the input port on the side of the starting plate (15) through a connecting pipe (14). The heating component (11) is connected to the input port on the side of the starting plate (15) through a heat-conducting pipe (13).

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