Hot water tank and heat pump system

Abstract

The utility model relates to the field of electric appliances and provides a hot water tank and a heat pump system. The hot water tank comprises a hot water tank body and a heat preservation sealing assembly. The heat preservation sealing assembly wraps the outer side of the hot water tank body, the heat preservation sealing assembly comprises two end heat preservation pieces and a peripheral heat preservation layer, the two end heat preservation pieces cover the two ends of the hot water tank body respectively, and the peripheral heat preservation layer is arranged around the peripheral wall of the hot water tank body. According to the hot water tank and the heat pump system, heat preservation is conducted on the hot water tank body through the heat preservation sealing assembly, and under the condition that normal use of the hot water tank is not affected, heat loss is reduced to the maximum extent, the temperature of hot water in the tank body is kept, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a hot water tank and a heat pump system. Background Art

[0002] In the related art, traditional hot water tanks often have the following defects: (1) Poor insulation effect: Existing hot water tanks may have poor insulation effect due to the use of inadequate insulation materials or technology, which makes heat easily dissipated, resulting in energy waste. (2) High insulation cost: In order to achieve better insulation effect, more expensive insulation materials or complex designs may be used, which increases the manufacturing cost of the hot water tank. (3) Poor sealing: There may be gaps or poor sealing between the tank body and the insulation layer, especially at the top and bottom of the tank body. These problems will make it easier for heat to dissipate through these parts. Utility Model Content

[0003] The utility model provides a hot water tank and a heat pump system to solve the defects in the prior art and achieve the following technical effects: a hot water tank body is insulated by a heat-insulating sealing component, heat loss is minimized without affecting the normal use of the hot water tank, the temperature of the hot water in the tank body is maintained, and energy utilization efficiency is improved.

[0004] According to the first embodiment of the present invention, the hot water tank comprises a hot water tank body and a heat-insulating sealing assembly;

[0005] The thermal insulation sealing assembly is wrapped around the outside of the hot water tank body. The thermal insulation sealing assembly includes two end insulation parts and a peripheral insulation layer. The two end insulation parts are respectively covered on the two ends of the hot water tank body, and the peripheral insulation layer is arranged around the outer peripheral wall of the hot water tank body.

[0006] According to one embodiment of the present invention, the two end insulation members respectively include an insulation top cover and an insulation base, the bottom of the insulation top cover forms a first insulation groove, and the top end of the hot water tank body is adapted to the shape of the first insulation groove and is sealed in the first insulation groove;

[0007] The top of the heat-insulating base forms a second heat-insulating tank, and the bottom end of the hot water tank body is adapted to the shape of the second heat-insulating tank and is sealed in the second heat-insulating tank.

[0008] According to an embodiment of the present invention, the thermal insulation top cover and the thermal insulation base are both made of foam.

[0009] According to one embodiment of the present invention, the top of the hot water tank is provided with a plurality of first inlet and outlet water pipes, and correspondingly, the thermal insulation top cover is formed with a plurality of through first water pipe holes, and the number of the first inlet and outlet water pipes and the first water pipe holes are equal and correspond one to one.

[0010] According to an embodiment of the present invention, the first water inlet and outlet pipes and the first water pipe hole are both interference fit.

[0011] According to one embodiment of the present invention, the upper and lower ends of the peripheral insulation layer are respectively connected to the insulation top cover and the insulation base, and the outer diameter of the peripheral insulation layer is respectively the same as the outer diameter of the first insulation tank and the outer diameter of the second insulation tank.

[0012] According to an embodiment of the present invention, the outer peripheral insulation layer is made of polyethylene plastic.

[0013] According to an embodiment of the present invention, the peripheral thermal insulation layer adopts a beveled structure at its seams; and / or, a cloth-based tape is bonded to the seams of the peripheral thermal insulation layer.

[0014] According to one embodiment of the present invention, a plurality of second water inlet and outlet pipes are connected to the outer peripheral wall of the hot water tank body, and correspondingly, a plurality of second water pipe holes are provided on the outer peripheral insulation layer, and the number of the second water inlet and outlet pipes and the second water pipe holes are equal and correspond one to one.

[0015] Furthermore, the second water inlet and outlet pipes and the second water pipe hole are both interference fit.

[0016] The heat pump system according to the embodiment of the second aspect of the present invention includes the hot water tank as described in the embodiment of the first aspect of the present invention.

[0017] The utility model provides a hot water tank, which uses a heat-insulating sealing component to insulate the hot water tank body, thereby minimizing heat loss, maintaining the temperature of the hot water in the tank body, and improving energy utilization efficiency without affecting the normal use of the hot water tank.

[0018] Furthermore, compared with the related art, the present invention has at least the following advantages.

[0019] (1) Good overall sealing: Through the special design of thermal insulation sealing components, including end insulation parts and peripheral insulation layers, the sealing of the hot water tank body is ensured, effectively reducing heat loss.

[0020] (2) Superior overall performance: Due to the adoption of better insulation and sealing measures, the thermal insulation performance of the hot water tank has been improved, making the overall machine more efficient and better able to meet the user's thermal insulation needs.

[0021] (3) Low cost: Using materials such as PE (polyethylene), taking advantage of its cost advantages and processing characteristics, and combining it with the structural characteristics of the tank for design, not only improves production efficiency but also reduces overall costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the explosion structure of the hot water tank provided by the utility model.

[0024] Figure 2 It is a structural schematic diagram of the thermal insulation top cover provided by the utility model.

[0025] Figure 3 It is a structural schematic diagram of the heat-insulating base provided by the utility model.

[0026] Figure 4 It is a structural schematic diagram of the outer peripheral thermal insulation layer provided by the utility model.

[0027] Description of reference numerals:

[0028] 1. Hot water tank body; 2. Insulation top cover; 21. First insulation groove; 22. First water pipe hole; 3. Insulation base; 31. Second insulation groove; 4. Peripheral insulation layer; 41. Joint; 42. Second water pipe hole; 5. First inlet and outlet water pipe; 6. Second inlet and outlet water pipe; 7. Cloth-based tape. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0032] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] The following describes a hot water tank and a heat pump system having the hot water tank provided by the present invention with reference to the accompanying drawings.

[0034] like Figures 1 to 4 As shown, the hot water tank according to the embodiment of the first aspect of the present utility model includes a hot water tank body 1 and a heat preservation sealing assembly.

[0035] The thermal insulation sealing assembly is wrapped around the outside of the hot water tank body 1. The thermal insulation sealing assembly includes two end insulation parts and a peripheral insulation layer 4. The two end insulation parts are respectively covered on the two ends of the hot water tank body 1, and the peripheral insulation layer 4 is arranged around the outer wall of the hot water tank body 1.

[0036] The hot water tank provided by the present invention has a specific structure as follows: the hot water tank body 1 is the core component of the hot water tank and is used to hold hot water. The hot water tank body 1 itself has a certain heat preservation capacity, but in order to improve the heat preservation effect, a heat preservation sealing component is added to the outside of the hot water tank body 1.

[0037] The insulation seal assembly consists of two parts: the end insulation components and the peripheral insulation layer 4. The end insulation components include two insulation components located at the top and bottom of the hot water tank 1. These two insulation components cover both ends of the tank, preventing heat loss from the top or bottom. These insulation components are typically designed to fit snugly around the ends of the tank, ensuring a good seal.

[0038] The outer insulation layer 4 is an insulation layer surrounding the outer periphery of the hot water tank body 1, which is used to prevent heat from being lost through the sides of the tank body. The outer insulation layer 4 is connected to the end insulation parts to form a complete insulation system.

[0039] The end insulation members are respectively covered on the top and bottom of the hot water tank body 1, and the peripheral insulation layer 4 surrounds the outer peripheral wall of the hot water tank body 1. This design ensures that the entire surface area of ​​the hot water tank is covered with effective insulation material, reducing heat dissipation.

[0040] It can be understood that the main purpose of the thermal insulation sealing component is to minimize heat loss, maintain the temperature of the hot water in the tank, and improve energy utilization efficiency without affecting the normal use of the hot water tank.

[0041] Furthermore, the specific operating principle and process of the hot water tank of the present invention are as follows: After hot water is injected into the tank, the thermal insulation and sealing assembly, through its excellent sealing and thermal insulation properties, reduces the transfer of heat through the tank wall to the external environment. The peripheral insulation layer 4 and the end insulation components work together to form a sealed, insulated environment, thereby extending the heat retention time of the hot water. When hot water is needed, it can be drained through a reserved pipe or port, while the thermal insulation and sealing assembly continues to maintain the temperature of the remaining hot water.

[0042] In the related art, traditional hot water tanks often have the following defects: (1) Poor insulation effect: Existing hot water tanks may have poor insulation effect due to the use of inadequate insulation materials or technology, which makes heat easily dissipated, resulting in energy waste. (2) High insulation cost: In order to achieve better insulation effect, more expensive insulation materials or complex designs may be used, which increases the manufacturing cost of the hot water tank. (3) Poor sealing: There may be gaps or poor sealing between the tank body and the insulation layer, especially at the top and bottom of the tank body. These problems will make it easier for heat to dissipate through these parts.

[0043] Therefore, in order to solve the technical defects existing in the above-mentioned related technologies, the utility model provides a hot water tank, which uses an insulation sealing component to insulate the hot water tank body 1, thereby minimizing heat loss, maintaining the temperature of the hot water in the tank body, and improving energy utilization efficiency without affecting the normal use of the hot water tank.

[0044] Furthermore, compared with the related art, the present invention has at least the following advantages.

[0045] (1) Good overall sealing: Through the special design of thermal insulation sealing components, including end insulation parts and peripheral insulation layer 4, the sealing of the hot water tank body 1 is ensured, effectively reducing heat loss.

[0046] (2) Superior overall performance: Due to the adoption of better insulation and sealing measures, the thermal insulation performance of the hot water tank has been improved, making the overall machine more efficient and better able to meet the user's thermal insulation needs.

[0047] (3) Low cost: Using materials such as PE (polyethylene), taking advantage of its cost advantages and processing characteristics, and combining it with the structural characteristics of the tank for design, not only improves production efficiency but also reduces overall costs.

[0048] like Figures 1 to 3 As shown, according to some embodiments of the present invention, the two end insulation parts respectively include an insulation top cover 2 and an insulation base 3, the bottom of the insulation top cover 2 forms a first insulation groove 21, and the top end of the hot water tank body 1 is adapted to the shape of the first insulation groove 21 and is sealed in the first insulation groove 21.

[0049] The top of the heat-insulating base 3 forms a second heat-insulating tank 31 , and the bottom end of the hot water tank body 1 is adapted in shape to the second heat-insulating tank 31 and is sealed in the second heat-insulating tank 31 .

[0050] In this embodiment, the bottom of the insulating top cover 2 is designed with a first insulating groove 21, whose shape perfectly matches the top of the hot water tank 1. This seals the top of the hot water tank 1 within this insulating groove, effectively preventing heat loss from the top. Similarly, the top of the insulating base 3 is designed with a second insulating groove 31, whose shape matches the bottom of the hot water tank 1. Therefore, the bottom of the hot water tank 1 is also sealed within this insulating groove, reducing heat loss from the bottom of the tank.

[0051] This ensures that both the top and bottom of the hot water tank are well insulated, enhancing the overall thermal insulation performance of the tank. By ensuring that both ends of the tank are properly sealed, not only does this improve the thermal insulation effect, but it also strengthens the sealing of the system, ensuring that the hot water tank can retain heat more efficiently.

[0052] Furthermore, in some specific embodiments, the thermal insulation top cover 2 and the thermal insulation base 3 are both made of foam.

[0053] As can be appreciated, using foam material to form the insulating top cover 2 and insulating base 3 not only provides excellent thermal insulation performance, but also reduces the weight of the hot water tank. Furthermore, due to the low cost of foam material, the manufacturing cost of the hot water tank can be controlled. Furthermore, foam material is easy to process and shape, making it suitable for forming an insulating groove that conforms to the shape of the top and bottom ends of the tank body, thereby providing a tight seal and ensuring the overall sealing of the hot water tank.

[0054] like Figures 1 to 3 As shown, according to some embodiments of the present invention, a plurality of first water inlet and outlet pipes 5 are provided on the top of the hot water tank, and correspondingly, a plurality of through first water pipe holes 22 are formed on the thermal insulation top cover 2, and the number of the first water inlet and outlet pipes 5 and the first water pipe holes 22 are equal and correspond one to one.

[0055] In this embodiment, a plurality of first inlet and outlet water pipes 5 are designed on the top of the hot water tank, and these water pipes are used for the inflow and outflow of hot water. At the same time, the same number of first water pipe holes 22 are also provided on the heat-insulating top cover 2. These water pipe holes correspond one-to-one with the first inlet and outlet water pipes 5, and there is an interference fit between the two, that is, there is a certain degree of tightness when the water pipes are inserted into the holes. The benefits of such a design include but are not limited to: (1) Precise matching: Each inlet and outlet water pipe has a corresponding water pipe hole, which ensures the clarity and accuracy of the water flow path. (2) Interference fit: Such a design can reduce or even eliminate water leakage caused by loose connection, and enhance the sealing of the entire hot water tank. (3) Easy installation and maintenance: The interference fit design makes the installation and disassembly of the water pipes easier, and is also convenient for daily inspection and maintenance.

[0056] In summary, through such a design, the hot water tank not only achieves efficient thermal insulation performance, but also ensures the reliability and ease of use of the system.

[0057] like Figure 1 and Figure 4 As shown, according to some embodiments of the present invention, the upper and lower ends of the peripheral insulation layer 4 are respectively connected to the insulation top cover 2 and the insulation base 3, and the outer diameter of the peripheral insulation layer 4 is respectively the same as the outer diameter of the first insulation tank 21 and the outer diameter of the second insulation tank 31.

[0058] In this embodiment, the peripheral insulation layer 4 is located on the periphery of the hot water tank body 1, and its upper and lower ends are respectively connected to the insulation top cover 2 and the insulation base 3, forming a closed insulation structure, ensuring all-round insulation of the tank body from top to bottom.

[0059] like Figure 1 and Figure 4As shown, further, the outer diameter of the peripheral insulation layer 4 is the same as the outer diameter of the first insulation groove 21 of the insulation top cover 2 and the second insulation groove 31 of the insulation base 3. This design makes the connection between the insulation layer and the top cover and the base tighter, and there is no extra space to cause additional heat loss.

[0060] In this way, the above structure not only improves the thermal insulation performance of the hot water tank, but also ensures the integrity of the thermal insulation component, making the overall thermal insulation effect better, while also helping to enhance the sealing of the tank body and reduce energy loss.

[0061] In some specific embodiments, the peripheral insulation layer 4 is made of polyethylene plastic.

[0062] It should be noted that polyethylene (PE) is a commonly used thermoplastic resin, widely used in many fields due to its good processing characteristics and cost advantages. In the hot water tank design of the present invention, polyethylene (PE) is used as the material for the outer peripheral insulation layer 4. The selection of PE material takes into account its several advantages:

[0063] (1) Cost advantage: Polyethylene is a relatively cheap material, and its use can reduce the manufacturing cost of hot water tanks.

[0064] (2) Processing characteristics: PE material is easy to process and shape, suitable for manufacturing parts of various shapes and sizes, and is conducive to making an insulation layer that fits tightly with the tank body.

[0065] (3) Thermal insulation performance: Although PE is not the best thermal insulation material, it still has certain thermal insulation performance, which is sufficient for the thermal insulation layer of hot water tanks considering cost-effectiveness.

[0066] like Figure 1 and Figure 4 As shown, in some specific embodiments of the present invention, the peripheral thermal insulation layer 4 adopts a beveled structure at its seam 41.

[0067] It should be noted that traditional straight-line butt joints may leave tiny gaps at the joint 41, leading to heat leakage. However, the beveled cut structure adopted by the present invention, by cutting the joint 41 diagonally, can make the joint tighter during splicing, thus avoiding the possible loose sealing problem caused by direct butt joints.

[0068] Furthermore, the specific manifestation of the bevel structure is to perform non-perpendicular cutting on the edge of the seam 41 of the peripheral insulation layer 4. This non-perpendicular cutting is usually performed at a certain angle rather than a simple vertical cutting.

[0069] It is understood that the advantages of the beveled structure are: (1) Increased contact area: By beveled cutting, the two parts of the material at the joint 41 will form a larger contact area when spliced, thereby improving the sealing of the joint. (2) Reduced leakage risk: The beveled design can effectively avoid the tiny gaps that may be generated by direct docking, reducing heat leakage through the joint 41. (3) Aesthetics: Beveled edges appear smoother than right-angled edges, which increases the aesthetics of the insulation layer.

[0070] like Figure 1 and Figure 4 As shown, in some specific embodiments of the present invention, a cloth-based tape 7 is bonded to the seam 41 of the peripheral thermal insulation layer 4 .

[0071] In this embodiment, the cloth-based tape 7 is a strong, adhesive tape typically used in applications requiring high-strength fixing. The cloth-based tape 7 is applied to the seams 41 of the peripheral insulation layer 4. This fills any small gaps that may exist in the beveled seams 41, further enhancing the seal and preventing heat leakage.

[0072] Furthermore, the cloth-based tape 7 possesses strong physical strength, reinforcing the seams 41 and preventing cracking of the outer insulation layer 4 due to external factors during use. Furthermore, the cloth-based tape 7 is waterproof and moisture-proof, preventing moisture from invading the seams and affecting the insulation effect. The cloth-based tape 7 is easy to use; simply applying it is enough to seal the joints, simplifying the installation process.

[0073] In summary, the ultimate purpose of the beveled structure is to improve the sealing of the insulation layer and reduce heat loss. At the same time, combined with auxiliary sealing means such as cloth-based tape 7, it jointly ensures the tightness of the insulation layer joint 41. This not only improves the insulation effect, but also extends the service life of the insulation layer.

[0074] like Figure 1 and Figure 4 As shown, according to some embodiments of the present invention, a plurality of second inlet and outlet water pipes 6 are connected to the outer peripheral wall of the hot water tank body 1, and correspondingly, a plurality of through second water pipe holes 42 are provided on the outer peripheral insulation layer 4, and the number of the second inlet and outlet water pipes 6 and the second water pipe holes 42 are equal and correspond one to one.

[0075] Furthermore, the second water inlet and outlet pipes 6 and the second water pipe hole 42 are both interference fit.

[0076] In this embodiment, the second water inlet and outlet pipes 6 are mounted on the outer wall of the hot water tank 1, responsible for the inlet and outlet of hot water. The second water pipe holes 42 are located in the outer insulation layer 4 and strictly correspond to the positions of the second water inlet and outlet pipes 6, ensuring that each water inlet and outlet pipe can smoothly pass through the insulation layer without affecting its insulation effect.

[0077] The second water inlet and outlet pipes 6 and the second water pipe hole 42 are interference fit, that is, there is a slight pressure fit between the water inlet and outlet pipes and the water pipe hole, which ensures good sealing, prevents heat loss through these parts, and reduces the possibility of condensation water or other pollutants entering.

[0078] In this way, the utility model not only ensures the functionality of the hot water tank, that is, ensures that hot water can flow in and out smoothly, but also maintains good thermal insulation performance and improves the overall efficiency of the system.

[0079] like Figures 1 to 4 As shown, the heat pump system according to the embodiment of the second aspect of the present invention includes the hot water tank described in the embodiment of the first aspect of the present invention.

[0080] The heat pump system according to the embodiment of the present invention can achieve the following advantages by integrating such a high-performance hot water tank:

[0081] (1) Energy saving: Since the hot water tank has a good thermal insulation effect, it can reduce heat loss, thereby reducing the energy consumption required by the heat pump system to maintain water temperature and improving the energy utilization efficiency of the system.

[0082] (2) Cost-effectiveness: The use of lower-cost PE materials and other design optimizations reduce the overall manufacturing cost of the system.

[0083] (3) Reliability: The hot water tank has good sealing performance, which ensures the stability of the system operation and reduces problems caused by leakage or insufficient insulation.

[0084] (4) Easy to install and maintain: The hot water tank is designed to be easy to install and also convenient for subsequent maintenance and inspection.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A hot water tank, characterized in that: Including hot water tank body and thermal insulation sealing components; The thermal insulation sealing assembly is wrapped around the outside of the hot water tank body. The thermal insulation sealing assembly includes two end insulation parts and a peripheral insulation layer. The two end insulation parts are respectively covered on the two ends of the hot water tank body, and the peripheral insulation layer is arranged around the outer peripheral wall of the hot water tank body.

2. The hot water tank according to claim 1, characterized in that The two end insulation parts respectively include an insulation top cover and an insulation base, the bottom of the insulation top cover forms a first insulation groove, and the top end of the hot water tank body is adapted to the shape of the first insulation groove and is sealed in the first insulation groove; The top of the heat-insulating base forms a second heat-insulating tank, and the bottom end of the hot water tank body is adapted to the shape of the second heat-insulating tank and is sealed in the second heat-insulating tank.

3. The hot water tank according to claim 2, characterized in that: The heat-insulating top cover and the heat-insulating base are both made of foam.

4. The hot water tank according to claim 2, characterized in that The top of the hot water tank is provided with a plurality of first water inlet and outlet pipes. Correspondingly, the thermal insulation top cover is formed with a plurality of through first water pipe holes. The first water inlet and outlet pipes and the first water pipe holes are equal in number and are matched one-to-one.

5. The hot water tank according to claim 4, characterized in that: The first water inlet and outlet pipes are interference fit with the first water pipe hole.

6. The hot water tank according to any one of claims 2 to 5, characterized in that: The upper and lower ends of the peripheral insulation layer are respectively connected to the insulation top cover and the insulation base, and the outer diameter of the peripheral insulation layer is respectively the same as the outer diameter of the first insulation tank and the outer diameter of the second insulation tank.

7. The hot water tank according to claim 6, characterized in that The outer peripheral heat-insulating layer is made of polyethylene plastic.

8. The hot water tank according to claim 6, characterized in that The peripheral thermal insulation layer adopts a beveled structure at its seams; and / or, a cloth-based tape is bonded to the seams of the peripheral thermal insulation layer.

9. The hot water tank according to claim 6, characterized in that The outer peripheral wall of the hot water tank body is connected to a plurality of second water inlet and outlet pipes. Correspondingly, the outer peripheral insulation layer is provided with a plurality of second water pipe holes. The number of the second water inlet and outlet pipes and the second water pipe holes are equal and correspond to each other one by one. Furthermore, the second water inlet and outlet pipes and the second water pipe hole are both interference fit.

10. A heat pump system, characterized in that: The invention comprises a hot water tank according to any one of claims 1 to 9.

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