Connector assembly, water tank and water heater

Abstract

The embodiment of the utility model provides a connector assembly, a water tank and a water heater, and the connector assembly comprises a connecting body and a limiting plate; the number of the connecting bodies is at least two, each connecting body comprises a pipe joint and an insulating bush, the pipe joint is provided with a communicating channel, the communicating channel penetrates through the two opposite ends of the pipe joint in the first direction, and the insulating bush is arranged outside the pipe joint in a sleeving mode; the limiting plate is provided with limiting openings in one-to-one correspondence with the connecting bodies, the pipe joints of the connecting bodies are arranged in the corresponding limiting openings in a penetrating mode, and the insulating bushings at least protrude out of the side, in the first direction, of the limiting plate. The connector assembly provided by the embodiment of the utility model has a relatively good insulation effect and is convenient to install.

Description

Technical Field

[0001] The present application relates to the technical field of pipe joints, and particularly relates to a joint assembly, a water tank and a water heater. Background Art

[0002] In the related art, there is a water heater with an inner coil disposed in the inner tank, and the inner coil is welded to the inner tank for heating the water in the inner tank.

[0003] However, since the inner coil is welded to the inner tank, electrochemical corrosion is likely to occur at the welding position of the inner coil and the inner tank. Although components such as a magnesium rod and / or an electronic anode are generally assembled in the inner tank for anti-corrosion protection of the inner tank, since the inner coil welded to the inner tank is grounded together with the inner tank, the protection effect of components such as the magnesium rod and / or the electronic anode will also be correspondingly weakened due to the grounding. Utility Model Content

[0004] In view of this, the embodiments of the present application are expected to provide a joint assembly, a water tank and a water heater with good insulation effect and convenient installation.

[0005] To achieve the above object, the first embodiment of the present application provides a joint assembly, including:

[0006] At least two connecting bodies, the connecting body includes a pipe joint and an insulating bushing, the pipe joint has a communication channel, the communication channel penetrates through opposite ends of the pipe joint along a first direction, and the insulating bushing is sleeved outside the pipe joint;

[0007] A limiting plate, the limiting plate has limiting openings corresponding to the connecting bodies one by one, the pipe joints of the connecting bodies penetrate through the corresponding limiting openings, and the insulating bushing protrudes at least from one side of the limiting plate along the first direction.

[0008] In an implementation manner, an outer surface of the pipe joint has a first convex edge protruding away from the communication channel, the first convex edge is located between the limiting plate and the insulating bushing, and is in contact with the limiting plate and the insulating bushing respectively.

[0009] In an implementation manner, one of the insulating bushing and the first convex edge has a first sealing ring groove on an end surface close to the other one, the connecting body includes a first sealing ring, the first sealing ring is sleeved on the pipe joint and is located in the first sealing ring groove.

[0010] In an implementation manner, an outer surface of the insulating bushing has a second convex edge protruding away from the pipe joint, and the second convex edge is located at an end of the insulating bushing close to the limiting plate.

[0011] In one embodiment, the outer surface of the insulating bushing has a second sealing ring groove, and the connecting body includes a second sealing ring. The second sealing ring is sleeved on the insulating bushing and is located in the second sealing ring groove.

[0012] In one embodiment, the insulating bushing has a plurality of the second sealing ring grooves. The plurality of second sealing ring grooves are arranged at intervals along the first direction, and the second sealing rings correspond to the second sealing ring grooves one by one.

[0013] In one embodiment, the pipe joint is welded to the limiting plate; and / or,

[0014] The insulating bushing is threadedly connected to the pipe joint.

[0015] The second embodiment of the present application provides a water tank, including:

[0016] An inner tank, the inner tank having a water storage cavity and two installation ports respectively communicating with the water storage cavity;

[0017] The above-mentioned joint assembly, at least two of the connecting bodies include a first connecting body and a second connecting body. The insulating bushing of the first connecting body is inserted through one of the two installation ports, and the insulating bushing of the second connecting body is inserted through the other of the two installation ports. The limiting plate is located in the water storage cavity;

[0018] An inner coil pipe with a flow channel, the inner coil pipe is located in the water storage cavity, and opposite ends of the inner coil pipe along the extending direction are respectively connected to the pipe joint of the first connecting body and the pipe joint of the second connecting body, so that the flow channel communicates with the communication channels of the respective pipe joints.

[0019] In one embodiment, the inner tank includes a tank body having the water storage cavity and the two installation ports and inner tank joints corresponding to the installation ports one by one. The inner tank joints have insertion channels; each inner tank joint is respectively arranged at the corresponding installation port, and the insulating bushing of the first connecting body and the insulating bushing of the second connecting body are respectively inserted into the insertion channels of the corresponding inner tank joints.

[0020] In one embodiment, the insertion channel gradually contracts in a direction away from the water storage cavity, and the portion of the insulating bushing located in the insertion channel matches the shape of the insertion channel.

[0021] In one embodiment, the water tank includes two nuts, one of the two nuts is threadedly connected to the pipe joint of the first connecting body and abuts against the side of the corresponding inner tank joint facing away from the limiting plate, and the other of the two nuts is threadedly connected to the pipe joint of the second connecting body and abuts against the side of the corresponding inner tank joint facing away from the limiting plate.

[0022] A third embodiment of the present application provides a water heater, comprising:

[0023] The water tank described above;

[0024] A supply device, wherein the supply device has a working fluid outlet and a working fluid inlet, and the supply device is respectively connected to the pipe joint of the first connection body and the pipe joint of the second connection body, so that the working fluid outlet is connected to the flow channel through the pipe joint of the first connection body, and the working fluid inlet is connected to the flow channel through the pipe joint of the second connection body.

[0025] In one embodiment, the supply equipment includes at least one of a solar thermal panel, a gas heater, an electric heater and a heat pump host.

[0026] The embodiment of the present application provides a joint assembly, a water tank and a water heater. By installing a joint assembly having a pipe joint and an insulating bushing at the installation port of the inner tank, the inner tank and the inner coil can be separated by the insulating bushing, thereby not only avoiding electrochemical corrosion between the inner coil and the inner tank due to welding, but also preventing the magnesium rod and / or electronic anode and other components of the water tank from being affected by the grounding of the inner coil and the inner tank, resulting in weakened anti-corrosion protection. The joint assembly can limit the pipe joints of each connection body and form an integral structure by setting a limit plate, so that in the process of installing the joint assembly, it is easy to align the insulating bushing of each connection body with the corresponding installation port, thereby improving the convenience of installing the joint assembly. In other words, the joint assembly of the embodiment of the present application not only has a good insulation effect, but also is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a water heater according to an embodiment of the present application;

[0028] Figure 2 for Figure 1 An exploded view of the water tank is shown;

[0029] Figure 3 for Figure 1 The schematic diagram of the assembly relationship between the joint assembly and the inner coil is shown;

[0030] Figure 4 forFigure 3 Schematic structural diagram of the joint assembly shown

[0031] Figure 5 is Figure 4 Exploded view of the joint assembly shown

[0032] Figure 6 is Figure 1 Schematic diagram of the assembly relationship of the inner tank, the joint assembly and the inner coil shown

[0033] Explanation of reference numerals in the drawings:

[0034] 10. Water tank; 11. Inner tank; 11a. Water storage chamber; 11b. Installation opening; 111. Tank body; 1111. Tank body; 1112. Top cover; 1113. Bottom cover; 112. Inner tank joint; 112a. Insertion channel; 12. Joint assembly; 121. Connection main body; 121a. First connection main body; 121b. Second connection main body; 1211. Pipe joint; 1211a. Communication channel; 1211b. First convex edge; 1211c. First sealing ring groove; 1212. Insulating bushing; 1212a. Second convex edge; 1212b. Second sealing ring groove; 1213. First sealing ring; 1214. Second sealing ring; 122. Limiting plate; 122a. Limiting opening; 13. Inner coil; 14. Nut; 20. Supply device; 20a. Working fluid outlet; 20b. Working fluid inlet; 30. First connecting pipe; 40. Second connecting pipe; 50. Water pump. Detailed implementation manner

[0035] In the description of the embodiments of the present application, it should be noted that the term "first direction" is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the embodiments of the present 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 the embodiments of the present application. Figure 6 As shown in the attached drawings, it is only for the convenience of describing the embodiments of the present 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 the embodiments of the present application.

[0036] An embodiment of the present application provides a joint assembly 12. Please refer to Figures 1 to 6 , the joint assembly 12 includes a limiting plate 122 and a connection main body 121.

[0037] The number of the connection main bodies 121 is at least two. That is to say, the number of the connection main bodies 121 can be two, or can be more than two.

[0038] The connection main body 121 includes a pipe joint 1211 and an insulating bushing 1212. The pipe joint 1211 has a communication channel 1211a, and the communication channel 1211a penetrates through the opposite ends of the pipe joint 1211 along the first direction. The insulating bushing 1212 is sleeved outside the pipe joint 1211.

[0039] The insulating bushing 1212 refers to a bushing that can play an insulating role. The insulating bushing 1212 is made of insulating materials, and the insulating materials include but are not limited to plastics, rubbers, ceramics, etc. Among them, plastics include one or a combination of more than one of polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polytetrafluoroethylene (PTFE), polycarbonate (PC), polyethylene terephthalate (PET), polyurethane (PU), and chlorinated polyvinyl chloride (CPVC).

[0040] The pipe joint 1211 can be made of insulating materials or non-insulating materials.

[0041] The insulating bushing 1212 can be threadedly connected to the pipe joint 1211 to better ensure that the insulating bushing 1212 does not slide along the first direction. The insulating bushing 1212 can also be threadedly connected to the pipe joint 1211, that is, the insulating bushing 1212 can be only sleeved on the outside of the pipe joint 1211 without further connection using other connection schemes.

[0042] The limiting plate 122 has limiting openings 122a corresponding one by one to the connecting body 121. The pipe joints 1211 of each connecting body 121 pass through the corresponding limiting openings 122a, and the insulating bushing 1212 protrudes at least from one side of the limiting plate 122 along the first direction.

[0043] That is to say, the number of the limiting openings 122a is at least equal to the number of the connecting bodies 121, and each connecting body 121 is respectively installed at the corresponding limiting opening 122a. When the number of the limiting openings 122a is greater than the number of the connecting bodies 121, the redundant limiting openings 122a can be left idle or other components can be installed.

[0044] Figure 5 The shown limiting opening 122a is a hole shape with a closed perimeter. In some other embodiments, the limiting opening 122a can also have a notch shape with a partially open area.

[0045] The limiting plate 122 can be made of insulating materials or non-insulating materials.

[0046] The pipe joint 1211 can be welded to the limiting plate 122 or not welded to the limiting plate 122. For example, the pipe joint 1211 can be in interference fit with the limiting opening 122a.

[0047] The insulating bushing 1212 protrudes at least from one side of the limiting plate 122 along the first direction, which means that the insulating bushing 1212 can be located on one side of the limiting plate 122 along the first direction as shown in Figure 4 and Figure 6 or, the insulating bushing 1212 can also be inserted through the limiting opening 122a, but a part of the structure of the insulating bushing 1212 inserted through the limiting opening 122a protrudes from one side of the limiting plate 122 along the first direction.

[0048] The pipe connectors 1211 of each connecting body 121 can play a limiting role by being inserted through the corresponding limiting openings 122a to ensure that there is no large deviation in the relative positions between the pipe connectors 1211 of each connecting body 121. In addition, each connecting body 121 can also form an integral structure through the limiting plate 122.

[0049] Another embodiment of the present application provides a water heater. Please refer to Figure 1 , the water heater includes a water tank 10 and a supply device 20.

[0050] The type of the water heater is not limited as long as it has a water tank 10. Exemplarily, the water heater can be a heat pump water heater, an electric water heater, etc.

[0051] Please refer to Figure 1 and Figure 2 , the water tank 10 includes an inner tank 11, an inner coil 13, and the joint assembly 12 provided in any embodiment of the present application.

[0052] The inner tank 11 has a water storage cavity 11a and two mounting openings 11b respectively communicating with the water storage cavity 11a.

[0053] The water storage cavity 11a is used for storing domestic water.

[0054] The material of the inner tank 11 is not limited. Exemplarily, the material of the inner tank 11 can be enamel or stainless steel.

[0055] At least two connecting bodies 121 include a first connecting body 121a and a second connecting body 121b. It should be noted that both the first connecting body 121a and the second connecting body 121b are connecting bodies 121, and they are only distinguished by the first connecting body 121a and the second connecting body 121b for the convenience of description.

[0056] Please continue to refer to Figure 1 and Figure 6, the insulating bushing 1212 of the first connection body 121a is inserted through one of the two mounting openings 11b, and the insulating bushing 1212 of the second connection body 121b is inserted through the other of the two mounting openings 11b. The limiting plate 122 is located within the water storage cavity 11a.

[0057] That is to say, by inserting the insulating bushing 1212 of the first connection body 121a and the insulating bushing 1212 of the second connection body 121b through the corresponding mounting openings 11b respectively, the joint assembly 12 can be installed on the inner container 11.

[0058] Figure 1 and Figure 6 As shown in the figure, the inner container 11 includes a container body 111 having a water storage cavity 11a and two mounting openings 11b, and inner container joints 112 corresponding to the mounting openings 11b one by one. The inner container joints 112 have insertion channels 112a. Each inner container joint 112 is respectively arranged at the corresponding mounting opening 11b, and the insulating bushing 1212 of the first connection body 121a and the insulating bushing 1212 of the second connection body 121b are respectively inserted into the insertion channels 112a of the corresponding inner container joints 112. That is to say, two inner container joints 112 are provided on the inner container 11. In addition to being inserted through the corresponding mounting openings 11b, the insulating bushing 1212 of the first connection body 121a and the insulating bushing 1212 of the second connection body 121b are also fixed by being inserted into the corresponding inner container joints 112.

[0059] Please refer to Figure 6 , the insertion channel 112a can gradually contract in a direction away from the water storage cavity 11a. That is to say, the cross-sectional area of the insertion channel 112a on the side close to the water storage cavity 11a is larger than the cross-sectional area on the side away from the water storage cavity 11a. The part of the insulating bushing 1212 located within the insertion channel 112a matches the shape of the insertion channel 112a. That is to say, the part of the insulating bushing 1212 located within the insertion channel 112a gradually contracts in a direction away from the limiting plate 122. That is, the cross-sectional area of the part of the insulating bushing 1212 located within the insertion channel 112a on the side close to the limiting plate 122 is larger than the cross-sectional area on the side away from the limiting plate 122.

[0060] Since the insulating bushing 1212 is inserted into the insertion channel 112a from the side of the insertion channel 112a close to the water storage cavity 11a, this setting method can facilitate the insertion of the insulating bushing 1212 into the insertion channel 112a.

[0061] In some other embodiments, the inner container 11 may not be provided with the inner container joints 112.

[0062] When the limiting plate 122 is made of an insulating material, the limiting plate 122 may or may not be in contact with the inner container 11. When the limiting plate 122 is made of a non-insulating material, preferably, the limiting plate 122 may be arranged at an interval from the inner container 11, that is, the limiting plate 122 is not in contact with the inner container 11.

[0063] The inner coil 13 has a flow channel. The inner coil 13 is located in the water storage cavity 11a. The opposite ends of the inner coil 13 in the extending direction are respectively connected to the pipe joint 1211 of the first connection body 121a and the pipe joint 1211 of the second connection body 121b, so that the flow channel is communicated with the communication channel 1211a of each pipe joint 1211.

[0064] The flow channel of the inner coil 13 is used for allowing a working medium at a relatively high temperature to pass through. The working medium at a relatively high temperature exchanges heat with the water in the water storage cavity 11a, and can heat the water in the water storage cavity 11a into hot water.

[0065] The material of the inner coil 13 is not limited. Exemplarily, the material of the inner coil 13 may be enamel or stainless steel.

[0066] The inner coil 13 can be installed in the water storage cavity 11a by connecting the inner coil 13 to the pipe joint 1211 of the first connection body 121a and the pipe joint 1211 of the second connection body 121b.

[0067] The connection manner of the inner coil 13 to the pipe joint 1211 of the first connection body 121a and the pipe joint 1211 of the second connection body 121b is not limited. Exemplarily, please refer to Figure 1 and Figure 6 , the opposite ends of the inner coil 13 in the extending direction can be respectively inserted into the communication channel 1211a of the corresponding pipe joint 1211, and the inner coil 13 is welded to the corresponding pipe joint 1211.

[0068] Please refer to Figure 2 , the body 111 of the inner container 11 includes a body 1111, a top cover 1112 and a bottom cover 1113. The top cover 1112 and the bottom cover 1113 are respectively located on the opposite sides of the body 1111 in the height direction. For the convenience of installing the inner coil 13, two installation openings 11b can be arranged on the body 1111 and are close to the bottom cover 1113. During the assembly process, the bottom end of the body 1111 can be opened first. The inner coil 13 is placed into the water storage cavity 11a from the bottom end of the body 1111, and after the opposite ends of the inner coil 13 in the extending direction are respectively connected to the pipe joint 1211 of the first connection body 121a and the pipe joint 1211 of the second connection body 121b, the bottom cover 1113 is welded to the bottom end of the body 1111.

[0069] Please refer to Figure 1, the supply device 20 has a working fluid outlet 20a and a working fluid inlet 20b. The supply device 20 is connected to the pipe joint 1211 of the first connection body 121a and the pipe joint 1211 of the second connection body 121b through pipelines respectively, so that the working fluid outlet 20a is communicated with the flow channel through the pipe joint 1211 of the first connection body 121a, and the working fluid inlet 20b is communicated with the flow channel through the pipe joint 1211 of the second connection body 121b.

[0070] The supply device 20 is used to provide a working fluid with a relatively high temperature for the inner coil 13. Among them, the working fluid flows out from the working fluid outlet 20a and returns to the supply device 20 from the working fluid inlet 20b.

[0071] The fact that the working fluid outlet 20a is communicated with the flow channel through the pipe joint 1211 of the first connection body 121a and the working fluid inlet 20b is communicated with the flow channel through the pipe joint 1211 of the second connection body 121b means that the working fluid flowing out from the working fluid outlet 20a can flow into the flow channel of the inner coil 13 through the communication channel 1211a of the pipe joint 1211 of the first connection body 121a. The working fluid flowing out from the flow channel can flow to the working fluid inlet 20b through the communication channel 1211a of the pipe joint 1211 of the second connection body 121b and return to the supply device 20 from the working fluid inlet 20b. Thus, the working fluid can circulate between the supply device 20 and the inner coil 13.

[0072] Please refer to Figure 1 , the water heater can be provided with a first connecting pipe 30 and a second connecting pipe 40. The first connecting pipe 30 is respectively connected to the supply device 20 and the pipe joint 1211 of the first connection body 121a, and the second connecting pipe 40 is respectively connected to the supply device 20 and the pipe joint 1211 of the second connection body 121b. Thus, the pipeline connection between the supply device 20 and the pipe joint 1211 of the first connection body 121a and the pipe joint 1211 of the second connection body 121b is realized.

[0073] In some other embodiments, the water heater may not be provided with the first connecting pipe 30 and the second connecting pipe 40. For example, the supply device 20 may be provided with a first installation pipe having a working fluid outlet 20a and a second installation pipe having a working fluid inlet 20b. The first installation pipe is connected to the pipe joint 1211 of the first connection body 121a, and the second installation pipe is connected to the pipe joint 1211 of the second connection body 121b.

[0074] The type of the supply device 20 is not limited, as long as it can provide a working fluid with a relatively high temperature for the inner coil 13. Exemplarily, please refer to Figure 1, the supply device 20 may include a solar thermal panel. The working medium flowing through the solar thermal panel may be water. The solar thermal panel can heat the water in the panel into hot water with a higher temperature by absorbing the heat of solar radiation. The hot water with a higher temperature flows into the flow channel of the inner coil 13 and exchanges heat with the water in the water storage cavity 11a.

[0075] Please refer to Figure 1 , the water heater may be provided with a water pump 50 on the pipeline between the solar thermal panel and the water tank 10. For example, for a water heater provided with a first connecting pipe 30 and a second connecting pipe 40, the water pump 50 may be arranged on the first connecting pipe 30 as shown in Figure 1 , or the water pump 50 may also be arranged on the second connecting pipe 40 to drive the water to circulate between the solar thermal panel and the inner coil 13.

[0076] In an alternative embodiment, when the temperature difference between the water temperature in the solar thermal panel and the water temperature in the water storage cavity 11a is greater than the set water temperature, such as 8 degrees Celsius, the water pump 50 can be controlled to operate to heat the water in the water storage cavity 11a.

[0077] In some other embodiments, the supply device 20 may also include a gas heater or an electric heater. The gas heater is a heater that uses gas to achieve heating, and the electric heater is a heater that uses electric energy to achieve heating. That is to say, the gas heater or the electric heater can be used to heat the water flowing into the flow channel of the inner coil 13 into hot water with a higher temperature. Similarly, a water pump 50 can also be arranged on the pipeline between the gas heater or the electric heater and the water tank 10.

[0078] In some other embodiments, the supply device 20 may further include a heat pump main unit. The heat pump main unit includes a heat exchanger and a compressor. The working medium flowing through the compressor is a refrigerant. The refrigerant can be heated into a refrigerant with a higher temperature by exchanging heat with the heat exchanger. The refrigerant with a higher temperature flows into the flow channel of the inner coil 13 and exchanges heat with the water in the water storage cavity 11a. The compressor is used to drive the refrigerant to circulate between the supply device 20 and the inner coil 13.

[0079] It should be noted that the supply device 20 may be any one of a solar thermal panel, a gas heater, an electric heater, and a heat pump main unit, or a combination of at least two of a solar thermal panel, a gas heater, an electric heater, and a heat pump main unit. In addition, the supply device 20 may also be other devices as long as it can heat the working medium.

[0080] In the embodiment of the present application, the water tank 10 can isolate the inner tank 11 from the inner coil 13 through the insulating bushing 1212 by installing the joint assembly 12 with the pipe joint 1211 and the insulating bushing 1212 at the installation opening 11b of the inner tank 11. Thus, not only can the electrochemical corrosion caused by welding between the inner coil 13 and the inner tank 11 be avoided, but also the components such as the magnesium rod and / or the electronic anode of the water tank 10 can be prevented from being affected by the grounding of the inner coil 13 and the inner tank 11, resulting in weakened anti-corrosion protection. By providing the limiting plate 122, the joint assembly 12 can not only limit the pipe joint 1211 of each connecting body 121, but also form an integral structure for each connecting body 121. Therefore, during the installation of the joint assembly 12, it is convenient to align the insulating bushing 1212 of each connecting body 121 with the corresponding installation opening 11b, thereby improving the convenience of installing the joint assembly 12. That is to say, the joint assembly 12 in the embodiment of the present application not only has a good insulation effect but also is convenient for installation.

[0081] In addition, since the inner coil in the related art is welded to the inner tank, during the transportation of the water tank, the weld between the inner coil and the inner tank may crack due to transportation bumps, resulting in the leakage of the working medium in the inner coil.

[0082] In the embodiment of the present application, by passing the insulating bushing 1212 through the installation opening 11b of the inner tank 11, a flexible connection can be formed between the inner coil 13 and the inner tank 11 through the insulating bushing 1212, and there is no problem of stress cracking between the inner coil 13 and the inner tank 11 due to transportation bumps. Therefore, by using the joint assembly 12 in the embodiment of the present application, the problem of leakage of the working medium in the inner coil 13 can also be better prevented.

[0083] It should be noted that the joint assembly 12 in the embodiment of the present application is not limited to being used on the water tank 10 of the water heater, and this joint assembly 12 can be used on any other device or equipment that needs to connect pipes according to requirements.

[0084] In one embodiment, please refer to Figures 4 to 6 , a first convex edge 1211b protruding away from the communication channel 1211a can be provided on the outer surface of the pipe joint 1211. The first convex edge 1211b is located between the limiting plate 122 and the insulating bushing 1212 and abuts against the limiting plate 122 and the insulating bushing 1212 respectively.

[0085] By providing the first convex edge 1211b, it is convenient to position the installation of the pipe joint 1211 on the limiting plate 122. In addition, the first convex edge 1211b can also play a positioning role for the insulating bushing 1212.

[0086] Please refer to Figure 5 and Figure 6, on the end face of the insulating bushing 1212 close to the first convex edge 1211b, a first sealing ring groove 1211c can be provided. The connecting body 121 includes a first sealing ring 1213. The first sealing ring 1213 is sleeved on the pipe joint 1211 and is located in the first sealing ring groove 1211c. That is to say, the insulating bushing 1212 and the first convex edge 1211b can be sealed by the first sealing ring 1213.

[0087] In some other embodiments, it can also be that the end face of the first convex edge 1211b close to the insulating bushing 1212 is provided with the first sealing ring groove 1211c. That is to say, the first sealing ring groove 1211c can also be provided on the first convex edge 1211b.

[0088] In one embodiment, please refer to Figure 5 and Figure 6 , on the outer surface of the insulating bushing 1212, a second convex edge 1212a protruding away from the pipe joint 1211 can be provided. The second convex edge 1212a is located at one end of the insulating bushing 1212 close to the limiting plate 122.

[0089] Please refer to Figure 6 , when the insulating bushing 1212 is inserted through the installation opening 11b, the second convex edge 1212a is actually located in the water storage cavity 11a and faces the inner wall surface of the inner tank 11 around the installation opening 11b.

[0090] The second convex edge 1212a can play a role in positioning the installation of the insulating bushing 1212 on the inner tank 11 to improve the convenience of installing the joint assembly 12. In addition, please refer to Figure 6 , for the pipe joint 1211 provided with the first convex edge 1211b, the second convex edge 1212a can separate the first convex edge 1211b from the inner wall surface of the inner tank 11 to prevent the first convex edge 1211b from contacting the inner wall surface of the inner tank 11. For the pipe joint 1211 without the first convex edge 1211b, the second convex edge 1212a can also separate the limiting plate 122 from the inner wall surface of the inner tank 11 to prevent the limiting plate 122 from contacting the inner wall surface of the inner tank 11.

[0091] In one embodiment, please refer to Figures 4 to 6 , on the outer surface of the insulating bushing 1212, a second sealing ring groove 1212b can be provided. The connecting body 121 includes a second sealing ring 1214. The second sealing ring 1214 is sleeved on the insulating bushing 1212 and is located in the second sealing ring groove 1212b.

[0092] The second sealing ring 1214 can play a sealing role between the inner tank 11 and the insulating bushing 1212. For example, please refer to Figure 6For the inner liner 11 provided with an inner liner joint 112, after the insulating sleeve 1212 of the first connecting body 121a and the insulating sleeve 1212 of the second connecting body 121b are respectively inserted into the corresponding inner liner joints 112, the insulating sleeve 1212 of the first connecting body 121a and the inner liner joint 112 can be sealed by a second sealing ring 1214, and the insulating sleeve 1212 of the second connecting body 121b and the inner liner joint 112 can also be sealed by the second sealing ring 1214.

[0093] Please continue reading Figures 4 to 6 The insulating bushing 1212 may be provided with a plurality of second sealing ring grooves 1212b, for example, Figures 4 to 6 The insulating bushing 1212 shown is provided with two second sealing ring grooves 1212b. In other embodiments, the number of the second sealing ring grooves 1212b may be greater than two. The plurality of second sealing ring grooves 1212b are arranged at intervals along the first direction, and the second sealing rings 1214 correspond to the second sealing ring grooves 1212b one by one, that is, the number of the second sealing rings 1214 is also multiple, and each second sealing ring groove 1212b is respectively provided with a second sealing ring 1214. The plurality of second sealing rings 1214 can improve the reliability of the seal between the insulating bushing 1212 and the inner liner 11.

[0094] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 6 For the inner tank 11 provided with the inner tank joint 112, the water tank 10 can be provided with two nuts 14, one of the two nuts 14 is threadedly connected to the pipe joint 1211 of the first connecting body 121a, and abuts against the side of the corresponding inner tank joint 112 away from the limiting plate 122, and the other of the two nuts 14 is threadedly connected to the pipe joint 1211 of the second connecting body 121b, and abuts against the side of the corresponding inner tank joint 112 away from the limiting plate 122.

[0095] That is to say, a portion of the pipe joint 1211 extends from a side of the inner liner joint 112 away from the limiting plate 122 to the outside of the inner liner joint 112 , and is threadedly connected to the nut 14 to further fix the pipe joint 1211 .

[0096] The nut 14 may be made of insulating material to provide insulation, for example, the nut 14 may be a nylon nut 14. In other embodiments, the nut 14 may be made of non-insulating material.

[0097] Since the nut 14 abuts against the side of the inner liner joint 112 facing away from the limit plate 122, during the installation of the joint assembly 12, it is only necessary to insert the insulating sleeve 1212 of the first connecting body 121a and the insulating sleeve 1212 of the second connecting body 121b into the corresponding insertion channel 112a of the inner liner joint 112, and then install the nut 14 on the pipe joint 1211 of the first connecting body 121a and the pipe joint 1211 of the second connecting body 121b respectively. The operation is simple and convenient, and the assembly efficiency of the joint assembly 12 can be improved.

[0098] In addition, for the joint assembly 12 provided with the first sealing ring 1213 and / or the second sealing ring 1214, during the process of tightening the nut 14, the first sealing ring 1213 and / or the second sealing ring 1214 can also be compressed along the first direction due to the force, thereby further improving the sealing reliability of the first sealing ring 1213 and / or the second sealing ring 1214.

[0099] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. 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 embodiments of the present application. In the present application, 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 may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0100] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A connector assembly, characterized in that, Comprising: At least two connecting bodies, the connecting bodies comprising pipe connectors and insulating bushings, the pipe connectors having communicating channels that penetrate opposite ends of the pipe connectors in a first direction, and the insulating bushings being sleeved outside the pipe connectors; A limiting plate having limiting openings corresponding one-to-one with the connecting bodies, the pipe connectors of the respective connecting bodies passing through the corresponding limiting openings, and the insulating bushings protruding at least from one side of the limiting plate in the first direction.

2. The joint assembly according to claim 1, wherein, The outer surface of the pipe connector has a first convex edge protruding away from the communicating channel, the first convex edge being located between the limiting plate and the insulating bushing and abutting against the limiting plate and the insulating bushing respectively.

3. The joint assembly according to claim 2, characterized in that, One of the insulating bushing and the first convex edge has a first sealing ring groove on the end face close to the other, and the connecting body includes a first sealing ring, the first sealing ring being sleeved on the pipe connector and located in the first sealing ring groove.

4. The joint assembly according to any one of claims 1-3, characterized in that, The outer surface of the insulating bushing has a second convex edge protruding away from the pipe connector, the second convex edge being located at one end of the insulating bushing close to the limiting plate.

5. The joint assembly according to any one of claims 1-3, characterized in that, The outer surface of the insulating bushing has a second sealing ring groove, and the connecting body includes a second sealing ring, the second sealing ring being sleeved on the insulating bushing and located in the second sealing ring groove.

6. The joint assembly according to claim 5, characterized in that, The insulating bushing has a plurality of the second sealing ring grooves, the plurality of second sealing ring grooves being arranged at intervals in the first direction, and the second sealing rings corresponding one-to-one with the second sealing ring grooves.

7. The joint assembly according to any one of claims 1-3, characterized in that, The pipe connector is welded to the limiting plate; and / or The insulating bushing is threadedly connected to the pipe connector.

8. A water tank, characterized in that, Comprising: An inner container having a water storage cavity and two mounting openings respectively communicating with the water storage cavity; The joint assembly according to any one of claims 1-7, at least two of the connecting bodies including a first connecting body and a second connecting body, the insulating bushing of the first connecting body passing through one of the two mounting openings, the insulating bushing of the second connecting body passing through the other of the two mounting openings, and the limiting plate being located in the water storage cavity; An inner coiled pipe having a flow channel, the inner coiled pipe being located in the water storage cavity, and opposite ends of the inner coiled pipe in the extending direction being respectively connected to the pipe connector of the first connecting body and the pipe connector of the second connecting body so that the flow channel communicates with the communicating channels of the respective pipe connectors.

9. The water tank according to claim 8, characterized in that, The inner container includes a container body having the water storage cavity and the two mounting openings and inner container connectors corresponding one-to-one with the mounting openings, the inner container connectors having insertion channels; the respective inner container connectors are respectively arranged at the corresponding mounting openings, and the insulating bushings of the first connecting body and the insulating bushings of the second connecting body are respectively inserted into the insertion channels of the corresponding inner container connectors.

10. The water tank according to claim 9, characterized in that, The insertion channel gradually contracts in a direction away from the water storage cavity, and the portion of the insulating bushing located in the insertion channel matches the shape of the insertion channel.

11. The water tank according to claim 9 or 10, characterized in that, The water tank includes two nuts, one of which is threadedly connected to the pipe joint of the first connecting body and abuts against the side of the corresponding inner tank joint facing away from the limiting plate, and the other of the two nuts is threadedly connected to the pipe joint of the second connecting body and abuts against the side of the corresponding inner tank joint facing away from the limiting plate.

12. A water heater, characterized in that, include: The water tank according to any one of claims 8 to 11; A supply device, wherein the supply device has a working fluid outlet and a working fluid inlet, and the supply device is respectively connected to the pipe joint of the first connection body and the pipe joint of the second connection body, so that the working fluid outlet is connected to the flow channel through the pipe joint of the first connection body, and the working fluid inlet is connected to the flow channel through the pipe joint of the second connection body.

13. The water heater according to claim 12, characterized in that, The supply equipment includes at least one of a solar thermal panel, a gas heater, an electric heater and a heat pump host.

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