Heater with non-metal shell and heating core with polymer coating and pool

Abstract

The utility model discloses a heater with a heating core with a non-metal shell and a polymer coating, which comprises the non-metal shell, a heating device and an insulating layer, and is characterized in that the non-metal shell is provided with an inner cavity; the heating device is arranged in the inner cavity and comprises a metal shell and a heating core, and an insulating part is arranged between the metal shell and the heating core; the insulating layer is arranged on the surface of the metal shell, and fluid flowing into the inner cavity can make contact with the insulating layer. According to the utility model, corrosion resistance and high pressure resistance of the heating device can be enhanced, potential safety hazards caused by electric leakage due to corrosion of the heating device caused by long-time soaking in water can be avoided, and scale can be prevented from being accumulated on the surface of the metal shell. The utility model further provides the pool.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heaters, in particular to a heater and a pool with a heating core having a non-metallic shell and a polymer coating. Background Art

[0002] PTC (Positive Temperature Coefficient) heater is also called PTC heating element. It is composed of PTC ceramic heating element and aluminum tube. PTC heater has advantages that traditional heating elements cannot match, such as constant temperature heating, no open flame, high heat conversion rate, minimal influence of power supply voltage, and long natural life. Therefore, it is widely used in various electric heating appliances.

[0003] At present, some pools also use PTC heaters as heating devices. However, as the application scenarios of pools continue to expand, especially in massage pools and other usage scenarios, the PTC heaters used in pools in the prior art have risks such as susceptibility to corrosion, leakage, and short service life. Utility Model Content

[0004] The utility model aims to solve the problems of the heating device in the prior art being susceptible to corrosion, easy to leak electricity and having a short service life. The utility model provides a heater which can achieve the beneficial effects of corrosion resistance, high pressure resistance and the like.

[0005] In order to solve the above technical problems, the embodiment of the utility model discloses a heater having a heating core with a non-metallic shell and a polymer coating, comprising:

[0006] A non-metallic shell having an inner cavity;

[0007] A heating device, the heating device is arranged in the inner cavity, the heating device comprises a metal shell and a heating core, and an insulating portion is arranged between the metal shell and the heating core;

[0008] The insulating layer is arranged on the surface of the metal shell, and the fluid flowing into the inner cavity can contact the insulating layer.

[0009] By adopting the above technical scheme, on the one hand, an inner cavity is provided in the non-metallic shell, and the fluid is heated in the inner cavity. The non-metallic shell can better gather the heat in the inner cavity to prevent the heat from being conducted to the outside through the shell, resulting in reduced heating efficiency; on the other hand, by successively providing an insulating part and a metal shell on the periphery of the heating core, and providing an insulating layer on the surface of the metal shell, the corrosion resistance and high-voltage resistance of the heating device can be enhanced, and scale can be prevented from accumulating on the surface of the metal shell. In this scheme, the fluid flowing into the inner cavity can directly contact the insulating layer, and the heating device will not be corroded or leak electricity even if it is immersed in water for too long.

[0010] According to another specific embodiment of the present utility model, the embodiment of the present utility model discloses a heater, wherein the insulating layer includes a polymer coating, and the polymer coating includes a liquid coating or a solid coating.

[0011] By adopting the above technical solution and utilizing the good corrosion resistance and high pressure resistance of polymer materials, the use of the heater is further made safer and more reliable.

[0012] According to another specific embodiment of the present utility model, the embodiment of the present utility model discloses a heater, wherein the non-metallic shell includes a partition, and the partition is arranged in the inner cavity to divide the inner cavity into at least two fluid channels.

[0013] By adopting the above technical solution, at least two fluid channels are formed by setting a partition, and the heating device can heat the fluid in the fluid channel. The fluid flows through different fluid channels in sequence, so that the fluid can obtain a more sufficient heating time.

[0014] According to another specific embodiment of the present utility model, the embodiment of the present utility model discloses a heater, wherein the heating device divides the inner cavity into at least two fluid channels.

[0015] By adopting the above technical solution, the inner cavity is divided into at least two fluid channels by a heating device, which can avoid the use of partitions and reduce product costs. The two opposite surfaces of the heating device can respectively contact the fluids in two adjacent fluid channels, so that one heating device can heat the fluids in two adjacent fluid channels at the same time, thereby improving the heating efficiency.

[0016] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a heater, wherein a first card slot and a second card slot are provided in the non-metallic shell, and along the second direction, the first card slot and the second card slot are provided on opposite sides of the non-metallic shell, and the two ends of the metal shell in the second direction are respectively connected to the first card slot and the second card slot.

[0017] By adopting the above technical solution, the stability of the heating device in the non-metallic shell can be enhanced by respectively clamping the two ends of the metal shell in the second direction to the first clamping slot and the second clamping slot.

[0018] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a heater, wherein the heating device includes a connecting portion, the connecting portion is arranged at the end of the non-metallic shell, the metal shell includes a closed portion with an opening at one end along a third direction, the insulating layer is arranged on the surface of the closed portion, the connecting portion is connected to one end of the opening, and the heating core protrudes from the opening for electrical connection with a control device.

[0019] By adopting the above technical solution, the heating core passes through the connection part and protrudes out of the non-metallic shell, which can prevent the part electrically connected to the control device from contacting the fluid and causing the risk of leakage.

[0020] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a heater, the connecting portion is provided with an opening corresponding to the fluid channel, the heater includes a first end cover, the first end cover is detachably provided on the non-metallic shell, the connecting portion is provided between the first end cover and the non-metallic shell, and the first end cover is connected to the opening.

[0021] By adopting the above technical solution, the openings on the connecting part corresponding to the fluid channels are connected through the first end cover to achieve smooth flow of the fluid between different channels.

[0022] According to another specific embodiment of the present utility model, the embodiment of the present utility model discloses a heater, wherein the connecting portion is sealedly connected to the end of the metal shell.

[0023] By adopting the above technical solution, the connecting part is sealed and connected to the end of the metal shell, for example, the connecting part and the metal shell are connected together through a welding process. The solder after welding can seal the gap that may appear at the junction of the two, so as to improve the sealing of the inner cavity and avoid fluid leakage.

[0024] According to another specific embodiment of the present utility model, the embodiment of the present utility model discloses a heater, wherein the connecting portion is made of metal, a portion of the connecting portion forms a portion of a side wall of the fluid channel, and an insulating layer is provided on the surface of the connecting portion.

[0025] By adopting the above technical solution, on the one hand, the connecting part is made of metal, and the heat generated by the heating core can increase the contact area with the water flow through the connecting part, thereby improving the heating efficiency; on the other hand, an insulating layer is also provided on the surface of the connecting part, which can enhance the corrosion resistance and high pressure resistance of the connecting part, and prevent scale from accumulating on the surface of the connecting part.

[0026] According to another specific embodiment of the present utility model, the embodiment of the present utility model discloses a heater, wherein the heating core comprises a PTC heater.

[0027] The embodiment of the utility model further discloses a water pool, which at least comprises the heater in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1a A three-dimensional schematic diagram of a water pool and a heater provided in an embodiment of the present application is shown.

[0029] Figure 1b A partial enlarged schematic diagram of a water pool and a heater provided in an embodiment of the present application is shown.

[0030] Figure 2 A three-dimensional schematic diagram of a heater provided in an embodiment of the present application is shown.

[0031] Figure 3 A cross-sectional schematic diagram of a heater provided in an embodiment of the present application is shown.

[0032] Figure 4 A three-dimensional schematic diagram of a heating device of a heater provided in an embodiment of the present application is shown.

[0033] Figure 5 An exploded view of a heating device of a heater provided in an embodiment of the present application is shown.

[0034] Figure 6 A schematic diagram showing the formation of a fluid channel of the heater provided in an embodiment of the present application is shown.

[0035] Figure 7 An exploded view of a heater provided in an embodiment of the present application is shown.

[0036] Figure 8 An exploded view of the heater provided by an embodiment of the present application is shown from another perspective.

[0037] Figure 9a A schematic diagram of the connection portion of the heater provided in an embodiment of the present application is shown.

[0038] Figure 9b A schematic diagram of the opening of the connecting portion of the heater provided in an embodiment of the present application is shown.

[0039] Fig.10 A schematic diagram of the liquid flow process of the heater provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0040] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0041] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0042] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0043] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0044] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0045] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] In some embodiments, see Figure 1a and Figure 1bThe present application provides a water pool 100, including a control device (not shown in the figure) and a circulation pump 101, the control device is electrically connected to the heater 10, and the circulation pump 101 is in communication with the heater 10. Exemplarily, the circulation pump 101 and the heater 10 are both arranged on a support frame 102, the support frame 102 is arranged on the side of the water pool 100, and a first flow channel 103 and a second flow channel 104 are arranged between the support frame 102 and the water pool, one end of the first flow channel 103 is in communication with a water holding space 105 of the water pool 100, the other end of the first flow channel 103 is in communication with one end of the circulation pump 101, the other end of the circulation pump 101 is in communication with a water inlet channel 1517 of the heater 10, the water outlet channel 16 of the heater 10 is in communication with one end of the second flow channel 104, and the other end of the second flow channel 104 is in communication with the water pool. The water in the pool 100 returns to the water holding space 105 of the pool 100 through the first flow channel 103, the circulation pump 102, the water inlet channel 1517, the water outlet channel 16, and the second flow channel 104 in sequence, completing a heating cycle. The aforementioned heating cycle process can be repeatedly performed until the water in the pool 100 is heated to a preset temperature. The control device is electrically connected to the heater 10 through a cable. The control device may also include a single-chip microcomputer, and the single-chip microcomputer outputs high and low levels to realize functions such as controlling the heater 10 to turn on or off heating.

[0047] See also Figure 2 , Figure 3 , Figure 4 In some embodiments, the heater 10 includes a non-metallic shell 11, a heating device 12 and an insulating layer 1204. The heating device 12 is disposed in the inner cavity 136 of the non-metallic shell 11, and the heating device 12 includes a metal shell 1201 and a heating core 1202. An insulating portion 1203 is provided between the metal shell 1201 and the heating core 1202. The insulating layer 1204 is provided on the surface of the metal shell 1201, and the fluid flowing into the inner cavity 136 can contact the insulating layer 1204.

[0048] In some embodiments, the metal shell 1201 is disposed around the heating device 12 at intervals, an insulating portion 1203 is disposed around the heating core 1202 and the metal shell 1201, and an insulating layer 1204 is disposed around the surface of the metal shell 1201 on one side facing away from the heating core 1202. Exemplarily, the metal shell 1201 includes a closed portion 1207 with an opening at one end along the third direction Z, and the insulating layer 1204 is disposed on the surface of the closed portion 1207.

[0049] In some embodiments, see Figure 4When the metal shell 1201 is in the shape of a rectangular parallelepiped, the metal shell 1201 includes a first surface 12011, a second surface 12012, a third surface 12013, a fourth surface 12014, a fifth surface 12015 and a sixth surface 12016, wherein the first surface 12011 and the second surface 12012 are arranged relative to each other along a first direction X, the third surface 12013 and the fourth surface 12014 are arranged relative to each other along a second direction Y, and the fifth surface 12015 and the sixth surface 12016 are arranged relative to each other along a third direction Z.

[0050] Exemplarily, one of the fifth surface 12015 and the sixth surface 12016 is a connecting surface, such as Figure 3 In the scheme shown in , the fifth surface 12015 is a connecting surface, the heating core 1202 is arranged to protrude from the fifth surface 12015, and the insulating layer 1204 is not arranged on the fifth surface 12015. At this time, the first surface 12011, the second surface 12012, the third surface 12013, the fourth surface 12014 and the sixth surface 12016 are jointly enclosed to form a closed part 1207.

[0051] In some embodiments, a sealing ring is provided between the third surface 12013 and the bottom of the non-metallic shell 11, and a sealing ring is provided between the top of the non-metallic shell 11 and the fourth surface 12014. At this time, the third surface 12013 and the fourth surface 12014 are not in contact with the fluid flowing into the inner cavity 136, and the insulating layer 1204 is not provided on the third surface 12013 and the fourth surface 12014. That is, the present application does not limit the specific position of the insulating layer 1204 provided on the metal shell 1201, and it is only necessary to satisfy that the insulating layer is provided on the surface of the metal shell 1201 that is in direct contact with the fluid. It can be understood that the present application does not limit the shape of the metal shell, for example, the metal shell 1201 can also be cylindrical.

[0052] When the fluid enters the inner cavity, it is in direct contact with the insulating layer 1204 on the surface of the metal shell 1201. Even if the fluid is immersed in water for a long time, the heating device will not be corroded or leak electricity.

[0053] The heater provided in the embodiment of the present application, on the one hand, is provided with an inner cavity 136 in the non-metallic shell 11, and the fluid is heated in the inner cavity 136. The non-metallic shell 11 can better gather heat in the inner cavity 136 to prevent the heat from being conducted to the outside through the shell, resulting in reduced heating efficiency. Compared with a shell made of metal material, the non-metallic shell 11 does not have the risk of rusting, and the cost of the non-metallic shell 11 is relatively lower. On the other hand, by sequentially providing an insulating part 1203 and a metal shell 1201 on the periphery of the heating core 1202, and providing an insulating layer 1204 on the surface of the metal shell 1201, the corrosion resistance and high voltage resistance of the heating device can be enhanced, and scale can be prevented from accumulating on the surface of the metal shell 1201.

[0054] Exemplarily, the heating core 1202 and the metal shell 1201 can be tightly fitted together by pressing or using a thermally conductive filling material, and the heating core 1202 includes a PTC heater.

[0055] In some embodiments, the non-metallic shell 11 is extended along the third direction Z, and the non-metallic shell 11 is hollow, that is, the interior of the non-metallic shell 11 is connected in the third direction Z. When there are no other components in the non-metallic shell 11, the non-metallic shell 11 as a whole is a fluid channel. The material of the non-metallic shell 11 can be plastic, and the present application does not limit the material and shape of the non-metallic shell 11.

[0056] For example, see Figure 4 , Figure 5 The metal shell 1201, the insulating portion 1203, and the heating core 1202 are all extended along the third direction Z. The metal shell 1201, the insulating portion 1203, and the heating core 1202 are all arranged in a rectangular parallelepiped shape. It can be understood that the metal shell 1201, the insulating portion 1203, and the heating core 1202 can also be other shapes, such as cylindrical, etc., and this application does not limit this. Exemplarily, the metal shell 1201 and the heating core 1202 can be tightly fitted together by pressing, or the metal shell 1201 and the heating core 1202 can be tightly fitted by using a thermally conductive filling material.

[0057] In some embodiments, the insulating part 1203 may be an insulating film, an insulating plastic, or an insulating paper. The present application does not limit the specific form of the insulating part 1203 .

[0058] In some embodiments, the insulating layer 1204 includes a polymer coating, which includes a liquid coating or a solid coating. Exemplarily, the polymer coating includes a polymer insulating material, which is an insulating material used in electrical equipment and cables, has excellent insulation performance and heat resistance, and is usually made of polymer materials, such as polyethylene, polypropylene, polyvinyl chloride, etc.

[0059] In some embodiments, see Figure 6 Combined with Figure 3 The non-metallic shell 11 includes a separator 13, which is disposed in the inner cavity 136 to separate the inner cavity 136 into at least two fluid channels. Exemplarily, the separator 13 is disposed inside the inner cavity 136 at intervals along the first direction X, and the separator 13 is extended along the third direction Z to divide the inner cavity 136 into a plurality of inner cavities extending along the third direction Z.

[0060] Exemplarily, a first aluminum plate 131 and a second aluminum plate 132 are provided in the non-metallic shell 11. The first aluminum plate 131 and the second aluminum plate 132 form a first fluid channel 133, a second fluid channel 134, and a third fluid channel 135 in the cavity 136. Correspondingly, a heating device 12 is provided in each fluid channel.

[0061] It is understandable that there can be only one heating device 12, and one heating device 12 can be arranged in any fluid channel. There can also be four, five, six, etc. heating devices 12, and the present application does not limit the number of heating devices 12 and in which fluid channel they are located. Similarly, the number of aluminum plates 131 and fluid channels of the present application can also be four, five, six, etc., and the present application does not limit the number of aluminum plates 131 and fluid channels.

[0062] In some embodiments, see Figure 7 , Figure 8 Combined with Figure 3 , the heating device 12 divides the inner cavity 136 into at least two fluid channels. Exemplarily, the heater 10 includes a first heating device 121 and a second heating device 122 arranged at intervals along the first direction X, the first heating device 121 and the second heating device 122 are both extended along the third direction Z, and the first heating device 121 and the second heating device 122 divide the interior of the non-metallic shell 11 into a first fluid channel 133, a second fluid channel 134, and a third fluid channel 135 extending along the third direction Z.

[0063] The heating device 12 in this embodiment can not only provide the function of heating the water flowing through the fluid channel, but also directly form the fluid channel instead of the aluminum plate 131. Moreover, through the aforementioned scheme, a heating device 12 can also heat the fluid in two adjacent fluid channels at the same time, that is, the two opposite surfaces of the heating device 12 in the first direction X can respectively contact the fluid in the two adjacent fluid channels, which can improve the heating efficiency.

[0064] It can be understood that when there is only one heating device 12 in the non-metallic shell 11, two fluid channels can be formed in the non-metallic shell 11. Similarly, when the non-metallic shell 11 includes three heating devices 12, four fluid channels can be formed in the non-metallic shell 11. The present application does not limit the number of heating devices 12 and fluid channels.

[0065] In some embodiments, see Figure 7 , Figure 8 , Figure 9a The heating device 12 includes a connecting portion 123, which is disposed at the end of the metal shell 1201. The connecting portion 123 and the opening 1208 ( Figure 5 The heating core 1202 protrudes from the opening 1208 and is used to be electrically connected to the control device. For example, the portion of the heating core 1202 protruding from the metal shell 1203 is provided with a cable 124, which is electrically connected to the control device through the cable 124.

[0066] In some embodiments, see Figure 9a , Figure 9b and Fig.10 The connection part 123 is made of metal, part of the connection part 123 forms a part of the side wall of the fluid channel, and the surface of the connection part 123 is provided with an insulating layer 1204. Exemplarily, the connection part 123 is provided with a first opening 1231 corresponding to the first fluid channel 133, a second opening 1232 corresponding to the second fluid channel 134, and a third opening 1233 corresponding to the third fluid channel 135. The first opening 1231 is connected to the first fluid channel 133, the second opening 1232 is connected to the second fluid channel 134, and the third opening 1233 is connected to the third fluid channel 135. The connection part 123 includes a first part 1234, a second part 1235, and a third part 1236. The first part 1234 forms a part of the side wall of the first fluid channel 133, the second part 1235 forms a part of the side wall of the second fluid channel 134, and the third part 1236 forms a part of the side wall of the third fluid channel 135.

[0067] It can be understood that in some embodiments, the projections of the first portion 1234 , the second portion 1235 , and the third portion 1236 in the third direction Z protrude from the non-metallic shell to further increase the contact area between the connecting portion 123 and the fluid in the fluid channel.

[0068] By adopting the above technical solution, on the one hand, the connection part 123 includes metal material, and the heat generated by the heating core 1202 can increase the contact area with the fluid through the first part 1234, the second part 1235, and the third part 1236, thereby improving the heating efficiency; on the other hand, an insulating layer 1204 is also provided on the surface of the connection part of the metal material, which can enhance the corrosion resistance and high pressure resistance of the connection part 123 and prevent scale from accumulating on the surface of the connection part 123.

[0069] In some embodiments, the heater 10 includes a first end cover 141 detachably disposed on the non-metallic shell 11 , the connecting portion 123 is disposed between the first end cover 141 and the non-metallic shell 11 , and the first end cover 141 communicates with the first opening 1231 and the second opening 1232 .

[0070] Exemplarily, the heater 10 further includes a second end cap 142, the first end cap 141 and the second end cap 142 are arranged on both sides of the non-metallic shell 11 along the third direction Z, the first end cap 141 is connected to the first fluid channel 133 and the second fluid channel 134, and the second end cap 142 is connected to the second fluid channel 134 and the third fluid channel 135. Exemplarily, the end cap 14 is arranged in an arc shape. It can be understood that the number of the end caps 14 can also be one, three, four, five, etc., and the end caps 14 can also be set to other shapes, which is not limited in the present application.

[0071] In some embodiments, the connection portion 123 is sealed and connected to the end of the metal shell 1201. Exemplarily, the connection portion 123 and the metal shell 1201 are connected together by a welding process, and the solder after welding is used to seal the inner cavity. At this time, there is no need to set an additional sealing ring between the connection portion 123 and the metal shell 1201 to seal the gap at the connection between the connection portion 123 and the metal shell 1201, which can avoid leakage caused by damage to the sealing ring, thereby causing safety hazards, and effectively improve the safety of the heater 10 provided in the present application.

[0072] It is understandable that the connection part 123 and the metal shell 1201 can also be connected together by other means such as snap-on, in which case a sealing ring is provided between the connection part 123 and the metal shell 1201. The present application does not limit the specific connection method between the connection part 123 and the metal shell 1201.

[0073] In some embodiments, see Figure 7 , Figure 8 , Figure 9a The heater 10 includes a first end portion 151, which is detachably connected to the non-metallic shell 11. Along the third direction Z, a portion of the end cover 14 is detachably arranged on a side of the first end portion 151 that is away from the non-metallic shell 11. The first end portion 151 is provided with a water inlet channel 1517, one end of the water inlet channel 1517 is connected to the fluid channel, and the other end is used to connect to the circulation pump.

[0074] Exemplarily, the first end portion 151 includes a first connecting plate 1511, and along the first direction X, the first connecting plate 1511 is provided with a first through hole 1512, a second through hole 1513, and a third through hole 1514, and the first connecting plate 1511 has a first convex portion 1515, the first convex portion 1515 is hollow, and a first channel 1516 is formed in the first convex portion 1515, and the first channel 1516 is connected to the first through hole 1512 and the second through hole 1513 at the same time, and the second end cover 142 is detachably connected to the first convex portion 1515. Along the first direction X, the water inlet channel 1517 is spaced apart from the first convex portion 1515, and the water inlet channel 1517 is connected to the first fluid channel 133 through the third through hole 1514.

[0075] In some embodiments, the first protrusion 1515 is provided with a first sealing groove 1518 , and a first sealing ring (not shown) is provided in the first sealing groove 1518 , that is, the first sealing ring is provided between the first end cover 141 and the first protrusion 1515 .

[0076] In some embodiments, see Figure 7 , Figure 8 The heater 10 includes a second end 152. Along the third direction Z, the first end 151 and the second end 152 are spaced apart on both sides of the non-metallic shell 11. The second end 152 is detachably connected to the non-metallic shell 11. The second end 152 includes a second connecting plate 1521. The second connecting plate 1521 is provided with a fourth through hole 1522 and a fifth through hole 1523. The fourth through hole 1522 is connected to the first fluid channel 133. The fifth through hole 1523 is connected to the second fluid channel 134. The second connecting plate 1521 has a second convex portion 1524. The second convex portion 1524 is hollow. A second channel 1525 is formed in the second convex portion 1524. The second channel 1525 is connected to the fourth through hole 1522 and the fifth through hole 1523 at the same time. The first end cover 141 is detachably connected to the second convex portion 1524.

[0077] In some embodiments, the second protrusion 1524 is provided with a second sealing groove 1526 , and a second sealing ring (not shown) is provided in the second sealing groove 1526 , that is, the second sealing ring is provided between the first end cover 141 and the second protrusion 1524 .

[0078] In some embodiments, see Figure 7 , Figure 8 The heater 10 includes a water outlet channel 16, one end of which is connected to the fluid channel, and the other end is used to discharge the heated water into the massage pool. Exemplarily, along the first direction X, the water outlet channel 16 is spaced apart from the second end 152, and the water outlet channel 16 includes a first part 161 and a second part 162. The first part 161 extends along the third direction Z and is connected to the third fluid channel 135; the second part 162 extends along the first direction X, one end is connected to the first part 161, and the other end is connected to the massage pool. That is, the first part 161 and the second part 162 are arranged in an L shape as a whole, so that the direction of the hot water flowing out of the fluid channel can be changed, which is convenient for arranging the position of the heater 10 in the massage pool.

[0079] It can be understood that the water outlet channel 16 can be set to different shapes as needed, and the water outlet direction is not limited to the first direction X in this embodiment, but can also be the second direction Y, the third direction Z, etc., which is not limited in this application.

[0080] In some embodiments, along the third direction Z, the connection portion 123 is disposed on a side of the non-metallic shell 11 away from the first end portion 151, and part of the connection portion 123 is disposed between the first portion 161 of the water outlet channel 16 and the non-metallic shell 11. The second end portion 152 includes a mounting through hole 1527, and along the third direction Z, the mounting through hole 1527 is opened on a side of the second end portion 152 facing away from the second end cover 142, and part of the heating core 1202 is located in the mounting through hole 1527 after passing through the connection portion 123, and the cable 124 is led out from the mounting through hole 1527 to be electrically connected to the control device.

[0081] In some embodiments, see Figure 7 A plurality of mounting portions 111 are provided in the non-metallic shell 11, and each mounting portion 111 is arranged one-to-one corresponding to each heater 10. Each mounting portion 111 includes a first card slot 1111 and a second card slot 1112. Along the second direction Y, the first card slot 1111 and the second card slot 1112 are provided on opposite sides of the non-metallic shell 11, and the two ends of the metal shell 1201 in the second direction Y are respectively connected to the first card slot 1111 and the second card slot 1112.

[0082] Exemplarily, a first mounting portion and a second mounting portion are provided in the non-metallic shell 11, the first mounting portion is provided between the first fluid channel 133 and the second fluid channel 134, the second mounting portion is provided between the second fluid channel 134 and the third fluid channel 135, the two ends of the metal shell 1201 of the first heating device 121 in the second direction Y are respectively clamped in the first clamping groove 1111 and the second clamping groove 1112 of the first mounting portion, and the two ends of the metal shell 1201 of the second heating device 122 in the second direction Y are respectively clamped in the first clamping groove 1111 and the second clamping groove 1112 of the second mounting portion.

[0083] See also Fig.10 In some embodiments, when the heater provided in the present application is working, water flows into the water inlet channel 1517 through the circulation pump, and flows through the first fluid channel 133, the first channel 1516, the second fluid channel 134, the second channel 1525, and the third fluid channel 135 in sequence, and finally flows out of the heater through the water outlet channel 16. The first heating device 121 can heat the water flowing through the first fluid channel 133 and the second fluid channel 134 at the same time, and the second heating device 122 can heat the water flowing through the third fluid channel 135 and the second fluid channel 134 at the same time. The first channel 1516 and the second channel 1525 can change the flow direction of the water.

[0084] Exemplarily, when water flows in the first fluid channel 133, the insulating layer 1204 on the first surface 12011 of the first heating device directly contacts the water flow to heat the water; when water flows in the second fluid channel 134, the insulating layer 1204 on the second surface 12012 of the first heating device 121 directly contacts the water flow to heat the water, and at the same time, the insulating layer 1204 on the first surface 12011 of the second heating device 122 also directly contacts the water flow to heat the water; when water flows in the third fluid channel 135, the insulating layer 1204 on the second surface 12012 of the second heating device 122 also directly contacts the water flow to heat the water. After the foregoing process, the heated hot water can enter the pool for use.

[0085] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A heater having a heating element with a non-metallic shell and a polymer coating, characterized in that: include: A non-metallic shell having an inner cavity; A heating device, the heating device is arranged in the inner cavity, the heating device comprises a metal shell and a heating core, and an insulating portion is arranged between the metal shell and the heating core; The insulating layer is arranged on the surface of the metal shell, and the fluid flowing into the inner cavity can contact the insulating layer.

2. The heater according to claim 1, characterized in that The metal shell is arranged around the heating core, the insulating part is arranged around the heating core and the metal shell, and the insulating layer is arranged around a surface of the metal shell on a side facing away from the heating core.

3. The heater according to claim 1 or 2, characterized in that: The insulating layer includes a polymer coating, and the polymer coating includes a liquid coating or a solid coating.

4. The heater according to claim 1 or 2, characterized in that: The non-metallic shell includes a partition, which is arranged in the inner cavity to divide the inner cavity into at least two fluid channels.

5. The heater according to claim 1, characterized in that The heating device divides the inner cavity into at least two fluid channels.

6. The heater according to claim 1, characterized in that The non-metallic shell is provided with a first card slot and a second card slot. Along the second direction, the first card slot and the second card slot are provided on opposite sides of the non-metallic shell. The two ends of the metal shell in the second direction are respectively connected to the first card slot and the second card slot.

7. The heater according to claim 5, characterized in that The heating device includes a connecting portion, which is arranged at the end of the non-metallic shell. The metal shell includes a closed portion with an opening at one end along a third direction. The insulating layer is arranged on the surface of the closed portion. The connecting portion is connected to one end of the opening of the metal shell. The heating core protrudes from the opening and is used to be electrically connected to the control device.

8. The heater according to claim 7, characterized in that The connecting portion is provided with an opening corresponding to the fluid channel, the heater comprises a first end cover, the first end cover is detachably arranged on the non-metallic shell, the connecting portion is arranged between the first end cover and the non-metallic shell, and the first end cover is connected to the opening.

9. The heater according to claim 7, characterized in that The connecting portion is sealed and connected to one end of the metal shell opening.

10. The heater according to claim 9, characterized in that The connecting portion is made of metal, part of the connecting portion forms a part of the side wall of the fluid channel, and an insulating layer is provided on the surface of the connecting portion.

11. The heater according to claim 1, characterized in that The heating core includes a PTC heater.

12. A pool, characterized in that: Comprising a heater as claimed in any one of claims 1 to 11.

Images