Liquid heater

Abstract

The utility model discloses a liquid heater. The liquid heater comprises a main body shell, an end plate, a sleeve assembly and a heating body which are detachably connected; the main body shell comprises a first end and a second end, an installation opening is formed in the first end of the main body shell, a water inlet and a water outlet are formed in the second end of the main body shell, an inner cavity is formed in the main body shell, a functional part is arranged in the sleeve assembly, and the sleeve assembly is installed in the inner cavity through the installation opening; the end plate is arranged at the mounting opening and forms a flow channel together with the main body shell and the sleeve assembly, and the head and tail ends of the flow channel are communicated with the water inlet and the water outlet respectively; the heating body is arranged in the flow channel in a penetrating mode through the end plate so as to make contact with and heat liquid in the flow channel. According to the scheme, the heating body can be immersed into liquid in the flow channel to directly heat, heat loss caused by a traditional heating mode is reduced, the flow channel is jointly formed by the main body shell, the end plate and the sleeve assembly which are detachably connected, and the sleeve assembly in the flow channel is convenient to disassemble and assemble.

Description

Technical Field

[0001] The present application relates to the technical field of heaters, and in particular to liquid heaters. Background Art

[0002] The flow channels inside traditional heaters are mostly formed inside an integrated metal pipe. The heat generated by the heating body is conducted to the liquid inside the pipe through the metal pipe, thereby achieving heating. This heating method has a large heat loss due to the existence of heat interaction at multiple material interfaces, resulting in a decrease in thermal efficiency. In addition, its flow channel structure is simple, and functional components such as guide structures cannot be installed in the flow channel, resulting in a relatively simple flow channel function. Utility Model Content

[0003] The present application provides a liquid heater to solve the problems of low thermal efficiency and single flow channel function of existing heaters.

[0004] In order to solve the above technical problems, the technical solution provided by this application is:

[0005] A liquid heater comprises a detachably connected main body shell, an end plate, a sleeve assembly and a heating body; the main body shell comprises a first end and a second end, the main body shell forms a mounting port at the first end, the main body shell forms a water inlet and a water outlet at the second end, an inner cavity is formed in the main body shell, functional components are arranged inside the sleeve assembly, and the sleeve assembly is loaded into the inner cavity through the mounting port; the end plate is arranged at the mounting port, and forms a flow channel together with the main body shell and the sleeve assembly, the head and tail ends of the flow channel are respectively connected to the water inlet and the water outlet; the heating body is penetrated into the flow channel through the end plate to contact and heat the liquid in the flow channel.

[0006] According to one embodiment of the present application, the functional component is a spiral flow guide component.

[0007] According to one embodiment of the present application, the flow channel includes at least two flow channel sections arranged side by side and at least one first conduction cavity, one first conduction cavity corresponds to the two flow channel sections, the first conduction cavity is located on the side of the flow channel section away from the water inlet and the water outlet, and the two adjacent flow channel sections are connected end to end through the first conduction cavity on the side away from the water inlet and the water outlet.

[0008] According to one embodiment of the present application, the flow channel also includes at least one second conduction cavity, one second conduction cavity corresponds to two flow channel sections, the second conduction cavity is located on the side of the flow channel section close to the water inlet and the water outlet, and the two adjacent flow channel sections are connected end to end through the second conduction cavity on the side close to the water inlet and the water outlet, and the number of the first conduction cavities is one more than the number of the second conduction cavities.

[0009] According to one embodiment of the present application, the sleeve assembly includes a plurality of sleeves, the inner wall of at least one of the sleeves is provided with the functional component, and the internal space of one of the sleeves forms a flow path section; the plurality of sleeves include a first sleeve, a second sleeve and at least one third combined sleeve, the flow path section formed inside the first sleeve is connected to the water inlet, the flow path section formed inside the second sleeve is connected to the water outlet, the third combined sleeve includes two fixedly connected sleeves to form two flow path sections therein, and the two flow path sections in the third combined sleeve correspond to a second conducting cavity.

[0010] According to one embodiment of the present application, the third combined sleeve is formed with a first partition, and the first partition is used to partition the liquid in the flow channel between two adjacent first conduction chambers; the main body shell is also formed with a second partition located in the inner cavity, and the second partition is used to partition the liquid in the flow channel between the water inlet and the adjacent second conduction chamber, and is used to partition the liquid in the flow channel between the water outlet and the adjacent second conduction chamber, and is used to partition the liquid in the flow channel between two adjacent second conduction chambers; the number of the second partitions is one more than the number of the first partitions; the second partitions and the second partitions are cross-spaced and arranged along a direction perpendicular to the extension of the flow channel section.

[0011] According to one embodiment of the present application, the heating body includes a cylindrical heating body, which is a shell structure with one end open and the other end closed, and the open end of the cylindrical heating body is an end extending into the flow channel, and a connecting hole for connecting the inside and outside of the cylindrical heating body is also provided on the wall of the cylindrical heating body.

[0012] According to one embodiment of the present application, the liquid heater also includes a circuit board, which is electrically connected to the heating body. The main body shell also forms a circuit board installation cavity opposite to the inner cavity, and the circuit board is located in the circuit board installation cavity.

[0013] According to one embodiment of the present application, the liquid heater also includes a heat dissipation mechanism, which includes a heat dissipation block, the heat dissipation block is partially embedded in the flow channel, and the heat dissipation block contacts and cooperates with the element to be cooled of the circuit board to achieve heat exchange between the element to be cooled and the liquid in the flow channel.

[0014] According to one embodiment of the present application, the liquid heater also includes: a water inlet temperature sensor for detecting the water temperature at the water inlet end of the flow channel; and / or a water outlet temperature sensor for detecting the water temperature at the water outlet end of the flow channel; and / or an anti-dry burning temperature sensor for detecting the temperature of the heating body.

[0015] The beneficial effects of this application are:

[0016] The liquid heater provided in the present application has a heating body that can be immersed in the liquid in the flow channel for direct heating, thereby reducing heat loss caused by traditional heating methods, and the flow channel is formed by a detachably connected main body shell, end plate and sleeve assembly, which facilitates the disassembly and assembly of the sleeve assembly in the flow channel. The functional components inside the sleeve assembly can perform certain functional effects on the liquid in the flow channel, such as diversion, and the sleeve assembly is detachable to facilitate replacement of sleeve assemblies with different functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 is a three-dimensional schematic diagram of an embodiment of a liquid heater provided by the present application;

[0019] Figure 2 yes Figure 1 An exploded schematic diagram of a liquid heater;

[0020] Figure 3a yes Figure 2 A three-dimensional schematic diagram of a main body shell of a liquid heater;

[0021] Figure 3b yes Figure 3a A three-dimensional schematic diagram of the main body shell from another perspective;

[0022] Figure 4 yes Figure 2 A three-dimensional schematic diagram of a sleeve assembly of a liquid heater;

[0023] Figure 5 yes Figure 1 A schematic cross-sectional view of a liquid heater along the axial direction of the heating body;

[0024] Figure 6 yes Figure 5 A schematic diagram of the assembly of a flow channel and a heating body in a liquid heater;

[0025] Figure 7 yes Figure 6 Schematic diagram of the state of the fluid flowing in a spiral in the flow channel;

[0026] Figure 8a yes Figure 2 A three-dimensional schematic diagram of multiple heating bodies in a liquid heater;

[0027] Figure 8b yes Figure 8a A cross-sectional view of a plurality of heating bodies along their axial direction;

[0028] Fig. 9 yes Figure 2 A three-dimensional schematic diagram of an end plate of a liquid heater;

[0029] Fig.10 yes Figure 2 A three-dimensional schematic diagram of the heat dissipation mechanism, water inlet temperature sensor, water outlet temperature sensor and anti-dry burning temperature sensor of the liquid heater.

[0030] Description of reference numerals:

[0031] Liquid Heater 10

[0032] Main body housing 100

[0033] First end 110

[0034] Second end 120

[0035] Lumen 101

[0036] Second partition 111

[0037] Water inlet 102

[0038] Water outlet 103

[0039] Mounting port 104

[0040] Runner 105

[0041] Flow channel section 1051

[0042] The first conduction cavity 1052

[0043] The second conduction cavity 1053

[0044] Circuit board mounting cavity 106

[0045] First cover plate 130a

[0046] Second cover plate 130b

[0047] Partition 140

[0048] Embedded hole 141

[0049] First insertion hole 142

[0050] The second insertion hole 143

[0051] The third insertion hole 144

[0052] Sleeve assembly 200

[0053] Functional Part 201

[0054] First sleeve 210

[0055] The first extension portion 211

[0056] Second sleeve 220

[0057] The second extension portion 221

[0058] The third combined sleeve 230

[0059] First partition 231

[0060] End plate 300

[0061] Through hole 301

[0062] First fixing hole 302

[0063] Second fixing hole 303

[0064] Heating body 400

[0065] Cylindrical heating body 410

[0066] Communication hole 411

[0067] Installation kit 420

[0068] Platen 500

[0069] Circuit board 600

[0070] Heat dissipation mechanism 700

[0071] Heat sink 710

[0072] Heat dissipation bracket 720

[0073] The third fixing hole 701

[0074] Inlet water temperature sensor 810

[0075] First bracket 811

[0076] First mounting hole 812

[0077] Outlet water temperature sensor 820

[0078] Second bracket 821

[0079] Second mounting hole 822

[0080] Anti-dry-burning temperature sensor 830

[0081] The third bracket 831

[0082] The third mounting hole 832

[0083] High voltage socket 910

[0084] Low voltage socket 920 DETAILED DESCRIPTION

[0085] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0086] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0087] The present application provides a liquid heater. In one embodiment, referring to Figure 1 and Figure 2 , Figure 1 is a three-dimensional schematic diagram of an embodiment of a liquid heater provided by the present application, Figure 2 yes Figure 1 The liquid heater 10 is a schematic exploded view of the liquid heater, which includes a main body shell 100, an end plate 300, a sleeve assembly 200 and a heating body 400 that are detachably connected.

[0088] See also Figure 3a and Figure 3b , Figure 3a yes Figure 2 A three-dimensional schematic diagram of the main body shell of the liquid heater, Figure 3b yes Figure 3a The main body shell 100 is a three-dimensional schematic diagram from another perspective, wherein the main body shell 100 includes a first end 110 and a second end 120, the main body shell 100 forms an installation port 104 at the first end 110, and the main body shell 100 forms a water inlet 102 and a water outlet 103 at the second end, an inner cavity 101 is formed in the main body shell 100, the installation port 104 is connected to the inner cavity 101, and the water inlet 102 and the water outlet 103 are also connected to the inner cavity 101.

[0089] See also Figure 4 , Figure 4 yes Figure 2 The three-dimensional schematic diagram of the sleeve assembly of the liquid heater is shown in FIG. 2 . The sleeve assembly 200 is provided with a functional component 201 inside, and the sleeve assembly 200 is installed into the inner cavity 101 through the installation opening 104 .

[0090] See also Figure 5 and Figure 6 , Figure 5 yes Figure 1 A schematic cross-sectional view of a liquid heater along the axial direction of the heating body, Figure 6 yes Figure 5 Schematic diagram of assembly of flow channel and heating body in liquid heater, end plate 300 is arranged at mounting opening 104, end plate 300 is used to block mounting opening 104 after sleeve assembly 200 is installed into inner cavity 101, so that end plate 300, main body shell 100 and sleeve assembly 200 form flow channel 105 together, it should be noted that, Figure 6 The flow channel 105 in FIG. 1 is a cavity structure, which is actually a virtual three-dimensional space structure, and the lines of the flow channel 105 represent its contour boundary lines.

[0091] The head and tail ends of the flow channel 105 are respectively connected to the water inlet 102 and the water outlet 103. The head and tail ends of the flow channel 105 refer to the end where the liquid flows in the flow channel 105 as the head end and the end where the liquid flows out as the tail end.

[0092] The heating body 400 is disposed in the flow channel 105 through the end plate 300 to contact and heat the liquid in the flow channel 105. The heating body 400 generates heat to heat the liquid in the flow channel 105. The heating body 400 can use a PTC (positive temperature coefficient thermistor) heating method or other heating methods.

[0093] It can be seen that the heating body 400 of the present application can be immersed in the liquid in the flow channel 105 for direct heating, thereby reducing the heat loss caused by the traditional heating method of heat transfer between structures, and the flow channel 105 is formed by a main shell 100, an end plate 300 and a sleeve assembly 200 that are detachably connected, which facilitates the disassembly and assembly of the sleeve assembly 200 in the flow channel 105. The functional components inside the sleeve assembly 200 can perform certain functional effects on the liquid in the flow channel 105, such as diversion, and the sleeve assembly 200 is detachable to facilitate the replacement of sleeve assemblies 200 with different functions.

[0094] And because the traditional heating method requires the heating body 400 to contact the outer surface of the main shell 100 (usually a metal pipe structure) to heat the fluid in the main shell 100, the main shell 100 of the heater needs to use a metal material with a high thermal conductivity coefficient to achieve heat transfer, and the structure has a heavy weight. The heating body 400 of the present application directly contacts the liquid from the inside of the main shell 100 for heating, so that the main shell 100 can be made of plastic material. While achieving the purpose of lightweight, the plastic material has a large thermal resistance, which is beneficial to reducing the mutual thermal influence between the fluid and the external overheating or overcooling environment, and is beneficial to the temperature stability in the system.

[0095] See again Figure 4 In this embodiment, the functional component 201 is a spiral guide component. When the liquid flows through the guide component, the guide component can guide the liquid to flow in an appropriate amount of spiral on the inner surface of the sleeve assembly 200, effectively suppressing the laminar flow characteristics of the fluid in the heating area, promoting uniform heating between the internal layers of the fluid, and fully and efficiently absorbing and taking away the heat from the surface of the heating body 400. Figure 7 The schematic diagram of the state of the fluid flowing in a spiral is shown. In other embodiments, the functional component 201 can also be provided with other structures to implement different functions on the fluid, not limited to the flow-guiding function of this embodiment. The size of the functional component 201 in the sleeve assembly 200 can also be changed to change the flow rate of the liquid in the sleeve assembly 200.

[0096] See again Figure 5 and Figure 6 In this embodiment, the flow channel 105 includes at least two flow channel sections 1051 arranged side by side and at least one first conduction cavity 1052. One first conduction cavity 1052 corresponds to two adjacent flow channel sections 1051. The first conduction cavity 1052 is located on the side of the flow channel section 1051 away from the water inlet 102 and the water outlet 103. The two adjacent flow channel sections 1051 are connected end to end through the first conduction cavity 1052 on the side away from the water inlet 102 and the water outlet 103. The first conduction cavity 1052 is formed by the end of the sleeve assembly 200 away from the water inlet 102 and the water outlet 103 and the end plate 300, as well as the part of the main body shell 100 between the two. The number of the heating bodies 400 is the same as the number of the flow channel sections 1051. One heating body 400 extends into one flow channel section 1051 to heat the liquid therein. Of course, it is not excluded that a plurality of heating bodies 400 are arranged in one flow channel section 1051, and that only a part of the flow channel sections 1051 are provided with heating bodies 400. The number of the first conduction cavities 1052 is half of the flow channel sections 1051. In this embodiment, the number of the flow channel sections 1051 is two, and therefore the number of the first conduction cavities 1052 is one.

[0097] Continue reading Figure 5 and Figure 6In this embodiment, the number of the flow channel sections 1051 is greater than two. For example, the number of the flow channel sections 1051 can be four, six, eight, etc. The number of the flow channel sections 1051 is preferably an even number. In this case, the flow channel 105 also includes at least one second conduction cavity 1053. One second conduction cavity 1053 corresponds to two adjacent flow channel sections 1051. The second conduction cavity 1053 is located on the side of the flow channel section 1051 close to the water inlet 102 and the water outlet 103. The two adjacent flow channel sections 1051 are connected end to end through the second conduction cavity 1053 on the side close to the water inlet 102 and the water outlet 103. The second conduction cavity 1053 is formed by the end of the sleeve assembly 200 close to the water inlet 102 and the water outlet 103 and the main shell 100. The number of the first conductive cavities 1052 is one more than the number of the second conductive cavities 1053. For example, when the number of the flow channel sections 1051 is four, the number of the first conductive cavities 1052 is two, and the number of the second conductive cavities 1053 is one. When the number of the flow channel sections 1051 is six, the number of the first conductive cavities 1052 is three, and the number of the second conductive cavities 1053 is two. Figure 5 and Figure 6 The case where the number of flow channel segments 1051 is four is shown.

[0098] The number of flow channel segments 1051 is at least two. When the number of flow channel segments 1051 is two, the flow channel 105 only includes the flow channel segment 1051 and the first conduction cavity 1052. When the number of flow channel segments 1051 is four or more, the flow channel 105 includes the flow channel segment 1051, the first conduction cavity 1052 and the second conduction cavity 1053.

[0099] The flow channel sections 1051 are arranged in parallel, and the first end 110 and the second end 120 of the main shell 100 may be distributed along the extension direction of the flow channel sections 1051 .

[0100] See again Figure 4 In this embodiment, the sleeve assembly 200 includes a plurality of sleeves, and the number of sleeves is consistent with the number of flow channel sections 1051. Exemplarily, when the number of flow channel sections 1051 is two, the number of sleeves in the sleeve assembly 200 is also two. When the number of flow channel sections 1051 is four, the number of sleeves in the sleeve assembly 200 is also four. The inner wall of at least one sleeve is provided with a functional component 201, and preferably the inner wall of each sleeve is provided with a functional component 201. The functional component 201 can be bonded to the inner wall of the sleeve or integrally formed with the sleeve. The internal space of a sleeve forms a flow channel section 1051. Specifically, the space inside the functional component 201 on the inner wall of the sleeve forms the flow channel section 1051. The plurality of sleeves include a first sleeve 210, a second sleeve 220 and at least one third combined sleeve 230, combined Figure 5The flow channel section 1051 formed inside the first sleeve 210 is connected to the water inlet 102, and the flow channel section 1051 formed inside the second sleeve 220 is connected to the water outlet 103. The third combined sleeve 230 includes two fixedly connected sleeves to form two flow channel sections 1051 therein. The two flow channel sections 1051 in the third combined sleeve 230 correspond to a second conducting cavity 1053.

[0101] See also Figure 4 and Figure 5 In this embodiment, the third combined sleeve 230 is formed with a first partition 231, and the first partition 231 is located between two sleeves of the third combined sleeve 230. The first partition 231 is used to separate the liquid in the flow channel 105 between two adjacent first conducting cavities 1052. Figure 3a and Figure 5 The main body shell 100 is also formed with a second partition 111 located in the inner cavity 101. The second partition 111 is used to partition the liquid in the flow channel 105 between the water inlet 102 and the adjacent second conduction cavity 1053, and to partition the liquid in the flow channel 105 between the water outlet 103 and the adjacent second conduction cavity 1053, and to partition the liquid in the flow channel 105 between two adjacent second conduction cavities 1053. In this embodiment, the purpose of providing the second partition 111 and the first partition 231 is to limit the direction of fluid flow, so that the fluid can flow along a predetermined flow trajectory after entering the flow channel 105 from the water inlet 102.

[0102] And the second partition 111 also extends toward the first conducting cavity 1052 to be flush with the ends of each sleeve of the sleeve assembly 200 away from the water inlet 102 and the water outlet 103, so that the outer surface of the first sleeve 210, the outer surface of the second sleeve 220 and the outer surface of the third combined sleeve 230 can fit the second partition 111, so that the liquid in the flow channel 105 can completely enter the interior of the first sleeve 210, the second sleeve 220 and the third combined sleeve 230, so that the liquid can flow along a predetermined trajectory in the flow channel 105.

[0103] The first partitions 231 and the second partitions 111 are cross-spaced and arranged along a direction perpendicular to the extension of the flow channel section 1051, and the number of the second partitions 111 is one more than the number of the first partitions 231. For example, when the number of the flow channel sections 1051 is four, the number of the first conduction cavities 1052 is two, the number of the first partitions 231 is one, the number of the second conduction cavities 1053 is one, and the number of the second partitions 111 is two; when the number of the flow channel sections 1051 is six, the number of the first conduction cavities 1052 is three, the number of the first partitions 231 is two, the number of the second conduction cavities 1053 is two, and the number of the second partitions 111 is three.

[0104] In order to fix the sleeve assembly 200 in the main body shell 100, after the end plate 300 is installed in the main body shell 100, the end plate 300 can abut against the end of the sleeve assembly 200 away from the water inlet 102 and the water outlet 103, so that the sleeve assembly 200 is fixed in the main body shell 100. Specifically, a step for abutting the end of the sleeve assembly 200 is formed at the position of the end of the sleeve assembly 200 close to the water inlet 102 and the water outlet 103 inside the main body shell 100. After the sleeve assembly 200 is installed in the inner cavity 101 of the main body shell 100, the end of the sleeve assembly 200 close to the water inlet 102 and the water outlet 103 is abutted by the step. After the end plate 300 is installed in the main body shell 100, the end plate 300 again abuts against the end of the sleeve assembly 200 away from the water inlet 102 and the water outlet 103, so that the sleeve assembly 200 is fixed in the main body shell 100. More specifically, see Figure 4 , the end of the first partition 231 of the third combined sleeve 230 in the sleeve assembly 200 away from the water inlet 102 and the water outlet 103 is used for abutment with the end plate 300, a part of the end of the first sleeve 210 is still flush with the ends of the two sleeves of the third combined sleeve 230, and the other part extends to be flush with the first partition 231, and the extension part is the first extension part 211, and the first extension part 211 is used for abutment with the end plate 300, a part of the end of the second sleeve 220 is still flush with the ends of the two sleeves of the third combined sleeve 230, and the other part extends to be flush with the first partition 231, and the extension part is the second extension part 221, and the second extension part 221 is used for abutment with the end plate 300. In this embodiment, the combined sleeve is provided with such a structure, which can not only not affect the trajectory of fluid flow, but also achieve abutment with the end plate 300 to fix the sleeve assembly 200.

[0105] See also Figure 2 ,as well as Figure 8a and Figure 8b , Figure 8a yes Figure 2 A three-dimensional schematic diagram of multiple heating bodies in a liquid heater, Figure 8b yes Figure 8aThe cross-sectional view of multiple heating bodies along their axial direction, in this embodiment, the heating body 400 includes a cylindrical heating body 410, and the cylindrical heating body 410 is a shell structure with an open end and a closed end, and the open end of the cylindrical heating body 410 is an end extending into the flow channel 105, and a connecting hole 411 for connecting the inside and outside of the cylindrical heating body 410 is also opened on the wall of the cylindrical heating body 410. The liquid in the flow channel 105 can enter the interior of the cylindrical heating body 410 through the opening at one end of the cylindrical heating body 410. The inside and outside of the cylindrical heating body 410 are heated simultaneously, and the heating efficiency is high. At the same time, the liquid inside the cylindrical heating body 410 can flow to the outside of the cylindrical heating body 410 through the connecting hole 411 to avoid the retention of liquid inside the cylindrical heating body 410.

[0106] See also Fig. 9 In this embodiment, in order to facilitate the heating body 400 to pass through the end plate 300, a through hole 301 is provided on the end plate 300. The number of the through holes 301 is the same as the number of the heating bodies 400. One through hole 301 corresponds to one heating body 400. The columnar heating body 410 of the heating body 400 passes through the through hole 301.

[0107] To facilitate the installation and fixation of the end plate 300 on the main shell 100, in this embodiment, a plurality of first fixing holes 302 are correspondingly opened on the end plate 300 and the main shell 100, and the connection and fixation between the end plate 300 and the main shell 100 are achieved by inserting a first fastener such as a screw into the first fixing holes 302 on the end plate 300 and the main shell 100.

[0108] To facilitate the fixation between the heating body 400 and the end plate 300 after installation, in this embodiment, the heating body 400 also includes an installation sleeve 420 fixedly sleeved on the outside of the columnar heating body 410, and the liquid heater 10 also includes a pressing plate 500. After the columnar heating body 410 passes through the through hole 301, the installation sleeve 420 abuts against the side of the end plate 300 away from the water inlet 102 and the water outlet 103, and then is pressed on the installation sleeve 420 by the pressing plate 500. After the pressing plate 500 is connected and fixed to the end plate 300, the heating body 400 is fixed on the end plate 300. In order to facilitate the connection and fixation between the pressing plate 500 and the end plate 300, the pressing plate 500 and the end plate 300 are respectively provided with second fixing holes 303, the first fixing hole 302 and the second fixing hole 303 are both located radially outside the mounting sleeve 420, and the second fixing hole 303 and the first fixing hole 302 are arranged at intervals to avoid mutual interference, and the heating body 400 is fixed between the end plate 300 and the pressing plate 500 by penetrating the second fixing holes 303 on the pressing plate 500 and the end plate 300 through a second fastener such as a screw. After the plurality of heating bodies 400 are pre-installed between the end plate 300 and the pressing plate 500, they are integrally installed on the main housing 100.

[0109] In order to prevent liquid leakage from occurring at the perforated portion of the heating body 400 and the end plate 300 , a sealing ring may be provided between the heating body 400 and the end plate 300 .

[0110] See again Figure 2 In this embodiment, the liquid heater 10 also includes a first cover plate 130a covering the first end 110 of the main shell 100. The first cover plate 130a is located on the side of the pressure plate 500 away from the water outlet 103 and the water inlet 102. After the heating body 400, the end plate 300 and the pressure plate 500 are integrally installed in the main shell 100, the first cover plate 130a can shield the heating body 400, the end plate 300 and the pressure plate 500 to prevent them from being exposed.

[0111] See again Figure 2 In this embodiment, the liquid heater 10 further includes a circuit board 600, which is electrically connected to the heating body 400. Figure 3a and Figure 3b The main housing 100 is also formed with a circuit board installation cavity 106 opposite to the inner cavity 101. The circuit board 600 is located in the circuit board installation cavity 106. The main housing 100 includes a partition 140 located between the inner cavity 101 and the installation cavity 106. The circuit board 600 is used to control the heating of the heating body 400. Optionally, the position of the circuit board 600 relative to the flow channel 105 can be arbitrary, and the present application does not specifically limit the position of the circuit board 600 relative to the flow channel 105. In this embodiment, Figure 1 This is the normal use state of the liquid heater 10 , and the circuit board 600 is located above the flow channel 105 . Of course, the circuit board 600 can also be arranged below the flow channel 105 or at other positions.

[0112] See again Figure 2 In this embodiment, the liquid heater 10 further includes a heat dissipation mechanism 700, combined with Fig.10 The heat dissipation mechanism 700 includes a heat dissipation block 710, which is partially embedded in the flow channel 105, and the heat dissipation block 710 contacts the heat dissipation element of the matching circuit board 600 to achieve heat exchange between the heat dissipation element and the liquid in the flow channel 105. The heat dissipation element is, for example, an IGBT (Insulated-Gate Bipolar Transistor) chip on the circuit board 600. In order to achieve partial embedding of the heat dissipation block 710 in the flow channel 105, embedding holes 141 are correspondingly opened on the partition 140 and the sleeve assembly 200, and the heat dissipation block 710 is partially embedded in the flow channel 105 through the embedding holes 141.

[0113] The heat dissipation mechanism 700 is located between the circuit board 600 and the partition 140. In order to facilitate the fixed installation of the heat dissipation block 710, the heat dissipation mechanism 700 is located between the circuit board 600 and the partition 140. Fig.10The heat dissipation mechanism 700 may also include a heat dissipation bracket 720, the heat dissipation block 710 is fixed on the heat dissipation bracket 720, and the heat dissipation bracket 720 and the partition 140 are correspondingly provided with third fixing holes 701. A third fastener such as a screw is inserted into the third fixing holes 701 on the heat dissipation bracket 720 and the partition 140 to achieve connection and fixation between the heat dissipation bracket 720 and the partition 140.

[0114] See again Figure 2 In this embodiment, the liquid heater 10 also includes a water inlet temperature sensor 810 electrically connected to the circuit board 600, which is used to detect the water temperature at the water inlet end of the flow channel 105; and / or, the liquid heater 10 also includes a water outlet temperature sensor 820 electrically connected to the circuit board 600, which is used to detect the water temperature at the water outlet end of the flow channel 105; and / or, the liquid heater 10 also includes an anti-dry burning temperature sensor 830 electrically connected to the circuit board 600, which is used to detect the temperature of the heating body 400.

[0115] The water inlet temperature sensor 810 and the water outlet temperature sensor 820 are used to feedback the temperature of the fluid in the flow channel 105, and the signal is fed back to the circuit board 600. The circuit board 600 increases or decreases the power of the heating body 400 according to the temperature signal to achieve the purpose of temperature control. The anti-dry-burning temperature sensor 830 is used to monitor the temperature of the heating body 400 to prevent the heating body 400 from overheating and damage.

[0116] Combination Figure 2 , Figure 3b and Fig.10 The water inlet temperature sensor 810 is located between the circuit board 600 and the partition 140. The partition 140 is provided with a first insertion hole 142 connected to the water inlet end of the flow channel 105. The first insertion hole 142 is located between the water inlet 102 and the end of the sleeve assembly 200 close to the water inlet 102. The probe of the water inlet temperature sensor 810 extends downward into the water inlet end of the flow channel 105 through the first insertion hole 142. The water inlet temperature sensor 810 is fixedly mounted on the partition 140 through a first bracket 811. The first bracket 811 is provided with a first mounting hole 812 for fasteners such as screws to penetrate to achieve the fixing of the first bracket 811 on the partition 140.

[0117] The outlet water temperature sensor 820 is located between the circuit board 600 and the partition 140. The partition 140 is provided with a second insertion hole 143 connected to the outlet water end of the flow channel 105. The second insertion hole 143 is located between the water outlet 103 and the end of the sleeve assembly 200 close to the water outlet 103. The probe of the outlet water temperature sensor 820 extends downward into the outlet water end of the flow channel 105 through the second insertion hole 143. The outlet water temperature sensor 820 is fixedly mounted on the partition 140 through a second bracket 821. The second bracket 821 is provided with a second mounting hole 822 for fasteners such as screws to penetrate to achieve the fixing of the second bracket 821 on the partition 140.

[0118] The anti-dry-burning temperature sensor 830 is located between the circuit board 600 and the partition 140. The partition 140 and the sleeve assembly 200 are correspondingly provided with a third insertion hole 144 connected to any flow channel section 1051 of the flow channel 105. The probe of the anti-dry-burning temperature sensor 830 extends downward into the flow channel section 1051 through the third insertion hole 144 and contacts the heating body 400. The anti-dry-burning temperature sensor 830 is fixedly mounted on the partition 140 through a third bracket 831. The third bracket 831 is provided with a third mounting hole 832 for fasteners such as screws to penetrate to achieve the fixing of the third bracket 831 on the partition 140.

[0119] See again Figure 2 In this embodiment, the liquid heater 10 further includes a high-voltage socket 910 and a low-voltage socket 920 electrically connected to the circuit board 600. The high-voltage socket 910 is used for inserting an external plug-in to achieve high-voltage heating of the liquid in the flow channel 105, and the low-voltage socket 920 is used for inserting an external plug-in to achieve low-voltage heating of the liquid in the flow channel 105. Both the high-voltage socket 910 and the low-voltage socket 920 are installed at the second end 120 of the main body shell 100.

[0120] See again Figure 2 In this embodiment, the liquid heater 10 also includes a second cover plate 130b covering the main shell 100. The second cover plate 130b is located on the side of the circuit board 600 away from the flow channel 105. After the circuit board 600 is installed in the main shell 100, the second cover plate 130b can cover the circuit board 600 to prevent it from being exposed.

[0121] The terms "first", "second", "third" in this application are only used for descriptive purposes and cannot be understood as indicating the quantity of the indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "include" and "have" and any of their variations are intended to cover non-exclusive inclusions. The process, method, system, product or equipment such as including a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0122] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A liquid heater, characterized in that: It includes a main body shell, an end plate, a sleeve assembly and a heating body that can be detachably connected; The main body shell comprises a first end and a second end, the main body shell forms a mounting port at the first end, the main body shell forms a water inlet and a water outlet at the second end, and an inner cavity is formed in the main body shell; Functional components are arranged inside the sleeve assembly, and the sleeve assembly is installed into the inner cavity through the installation port; The end plate is arranged at the installation opening, and together with the main shell and the sleeve assembly, forms a flow channel, and the first and last ends of the flow channel are respectively connected to the water inlet and the water outlet; The heating body is disposed in the flow channel through the end plate to contact and heat the liquid in the flow channel.

2. The liquid heater according to claim 1, characterized in that The functional component is a spiral flow guide component.

3. The liquid heater according to claim 1, characterized in that: The flow channel includes at least two flow channel sections arranged side by side and at least one first conduction cavity, one first conduction cavity corresponds to the two flow channel sections, the first conduction cavity is located on the side of the flow channel section away from the water inlet and the water outlet, and two adjacent flow channel sections are connected end to end through the first conduction cavity on the side away from the water inlet and the water outlet.

4. The liquid heater according to claim 3, characterized in that: The flow channel also includes at least one second conduction cavity, one second conduction cavity corresponds to two flow channel sections, the second conduction cavity is located on a side of the flow channel section close to the water inlet and the water outlet, and two adjacent flow channel sections are connected end to end through the second conduction cavity on a side close to the water inlet and the water outlet, and the number of the first conduction cavities is one more than the number of the second conduction cavities.

5. The liquid heater according to claim 4, characterized in that: The sleeve assembly comprises a plurality of sleeves, the inner wall of at least one of the sleeves is provided with the functional component, and the inner space of one of the sleeves forms a flow channel section; The multiple sleeves include a first sleeve, a second sleeve and at least one third combined sleeve. The flow channel section formed inside the first sleeve is connected to the water inlet, and the flow channel section formed inside the second sleeve is connected to the water outlet. The third combined sleeve includes two fixedly connected sleeves to form two flow channel sections inside the third combined sleeve. The two flow channel sections in the third combined sleeve correspond to one of the second conducting chambers.

6. The liquid heater according to claim 5, characterized in that The third combined sleeve is formed with a first partition, and the first partition is used to partition the liquid in the flow channel between two adjacent first conduction chambers; the main body shell is also formed with a second partition located in the inner chamber, and the second partition is used to partition the liquid in the flow channel between the water inlet and the adjacent second conduction chamber, and is used to partition the liquid in the flow channel between the water outlet and the adjacent second conduction chamber, and is used to partition the liquid in the flow channel between two adjacent second conduction chambers; The number of the second partitions is one more than the number of the first partitions; The second partitions are arranged crosswise and spaced apart from each other along a direction perpendicular to an extending direction of the flow channel section.

7. The liquid heater according to claim 1, characterized in that The heating body includes a columnar heating body, which is a shell structure with one end open and the other end closed, and the open end of the columnar heating body is an end extending into the flow channel. A connecting hole for connecting the inside and outside of the columnar heating body is also provided on the wall of the columnar heating body.

8. The liquid heater according to claim 6, characterized in that The liquid heater further comprises a circuit board, the circuit board is electrically connected to the heating body, the main body shell is further formed with a circuit board installation cavity opposite to the inner cavity, and the circuit board is located in the circuit board installation cavity.

9. The liquid heater according to claim 8, characterized in that The liquid heater also includes a heat dissipation mechanism, which includes a heat dissipation block. The heat dissipation block is partially embedded in the flow channel, and the heat dissipation block contacts and cooperates with the heat dissipation element of the circuit board to achieve heat exchange between the heat dissipation element and the liquid in the flow channel.

10. The liquid heater according to claim 1, characterized in that The liquid heater also includes: A water inlet temperature sensor, used to detect the water temperature at the water inlet end of the flow channel; and / or, a water outlet temperature sensor, for detecting the water temperature at the water outlet end of the flow channel; And / or, an anti-dry-burning temperature sensor is used to detect the temperature of the heating body.

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