Liquid heater

Abstract

The utility model discloses a liquid heater. The liquid heater comprises a main body shell, a water inlet and outlet shell, a sleeve assembly and a heating body which are detachably connected; the main body shell comprises a first end and a second end, the heating body penetrates through the first end, a mounting opening is formed in the second end of the main body shell, and an inner cavity is formed in the main body shell; a functional part is arranged in the sleeve assembly, and the sleeve assembly is mounted in the inner cavity through the mounting opening; a water inlet and a water outlet are formed in the water inlet and outlet shell, the water inlet and outlet shell is in butt joint with the mounting opening so as to form a flow channel together with the main body shell and the sleeve assembly, and the head and tail ends of the flow channel communicate with the water inlet and the water outlet correspondingly; the heating body is arranged in the flow channel in a penetrating mode through the first end so as to make contact with and heat liquid in the flow channel. According to the scheme, the flow channel is jointly formed by the main body shell, the water inlet and outlet shell and the sleeve assembly which are detachably connected, the sleeve assembly is detachable so that sleeve assemblies with different functions can be conveniently replaced, and in addition, the water inlet and outlet shell is also detachable so that different water inlet and outlet specifications can be conveniently replaced.

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, a water inlet and outlet shell, a sleeve assembly and a heating body; the main body shell comprises a first end and a second end, the first end is for the heating body to pass through, the main body shell forms a mounting port 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 loaded into the inner cavity through the mounting port; the water inlet and outlet shell is formed with a water inlet and a water outlet, the water inlet and outlet shell is butt-jointed with the mounting port to form 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 passed through the flow channel through the first end 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 at least one pair of combined sleeves, each pair of the combined sleeves includes two fixedly connected sleeves to form two flow path sections in the combined sleeves, and one combined sleeve corresponds to one of the first conducting chambers.

[0010] According to one embodiment of the present application, a first partition is also formed in the main body shell, and the first partition is used to partition the liquid in the flow channel between two adjacent first conduction chambers; the water inlet and outlet 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 section, 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 further includes a circuit board, which is electrically connected to the heating body. The shell further 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, an inlet and outlet water shell and a sleeve assembly. The functional components inside the sleeve assembly in the flow channel 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. In addition, the inlet and outlet water shells can also be detachable to facilitate replacement of different inlet and outlet water specifications. 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 A three-dimensional schematic diagram of a liquid heater from another perspective;

[0020] Figure 3 yes Figure 1 An exploded schematic diagram of a liquid heater;

[0021] Figure 4a yes Figure 3 A three-dimensional schematic diagram of a main body shell of a liquid heater;

[0022] Figure 4b yes Figure 4a A three-dimensional schematic diagram of the main body shell from another perspective;

[0023] Figure 4c yes Figure 4a A three-dimensional schematic diagram of the main body shell from another perspective;

[0024] Figure 4d yes Figure 4b A schematic cross-sectional view of a main body shell;

[0025] Figure 5a yes Figure 3 A three-dimensional schematic diagram of a sleeve assembly of a liquid heater;

[0026] Figure 5b yes Figure 5a A three-dimensional schematic diagram of a sleeve assembly from another perspective;

[0027] Figure 6 yes Figure 1 A schematic cross-sectional view of a liquid heater along the axial direction of the heating body;

[0028] Figure 7 yes Figure 6 A schematic diagram of the assembly of a flow channel and a heating body in a liquid heater;

[0029] Figure 8 yes Figure 3 A three-dimensional schematic diagram of the water inlet and outlet shells of the liquid heater;

[0030] Fig. 9 yes Figure 7 Schematic diagram of the state where the fluid in the middle flow channel flows in a spiral manner;

[0031] Fig.10a yes Figure 3 A three-dimensional schematic diagram of multiple heating bodies in a liquid heater;

[0032] Fig.10b yes Fig.10a A cross-sectional view of a plurality of heating bodies along their axial direction;

[0033] Fig.11 yes Figure 3 A three-dimensional schematic diagram of a pressure plate of a liquid heater;

[0034] Fig.12 yes Figure 3 A three-dimensional schematic diagram of the heat dissipation mechanism, water inlet temperature sensor, water outlet temperature sensor and anti-dry burning temperature sensor.

[0035] Description of reference numerals:

[0036] Liquid Heater 10

[0037] Main body housing 100

[0038] First end 110

[0039] Second end 120

[0040] Lumen 101

[0041] Mounting port 104

[0042] Runner 105

[0043] Flow channel section 1051

[0044] The first conduction cavity 1052

[0045] The second conduction cavity 1053

[0046] Circuit board mounting cavity 106

[0047] First partition 111

[0048] The first extension portion 111a

[0049] First cover plate 130a

[0050] Second cover plate 130b

[0051] Partition 140

[0052] Embedded hole 141

[0053] First insertion hole 142

[0054] The second insertion hole 143

[0055] The third insertion hole 144

[0056] Heating body mounting portion 150

[0057] Through hole 151

[0058] First fixing hole 152

[0059] Sleeve assembly 200

[0060] Functional Part 201

[0061] Combination sleeve 210

[0062] Connecting strip 211

[0063] Limiting part 212

[0064] Water inlet and outlet housing 300

[0065] Water inlet 300a

[0066] Water outlet 300b

[0067] The first cavity 301

[0068] The second cavity 302

[0069] The third cavity 303

[0070] Second partition 310

[0071] The second extension portion 320

[0072] Support rib 321

[0073] Installation seam 322

[0074] Heating body 400

[0075] Cylindrical heating body 410

[0076] Communication hole 411

[0077] Installation kit 420

[0078] Platen 500

[0079] Circuit board 600

[0080] Heat dissipation mechanism 700

[0081] Heat sink 710

[0082] Heat dissipation bracket 720

[0083] Inlet water temperature sensor 810

[0084] Outlet water temperature sensor 820

[0085] First bracket 821

[0086] First mounting hole 822

[0087] Anti-dry-burning temperature sensor 830

[0088] Second bracket 831

[0089] Second mounting hole 832

[0090] High voltage socket 910

[0091] Low voltage socket 920 DETAILED DESCRIPTION

[0092] 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.

[0093] 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.

[0094] The present application provides a liquid heater. In one embodiment, referring to Figure 1 , Figure 2 and Figure 3 , 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 A three-dimensional schematic diagram of a liquid heater from another perspective, Figure 3 yes Figure 1 The liquid heater 10 is a schematic exploded view of the liquid heater, which includes a detachably connected main body shell 100, a water inlet and outlet shell 300, a sleeve assembly 200 and a heating body 400.

[0095] See also Figure 4a , Figure 4b , Figure 4c and Figure 4d , Figure 4a yes Figure 3 A three-dimensional schematic diagram of the main body shell of the liquid heater, Figure 4b yes Figure 4a A three-dimensional schematic diagram of another perspective of the main housing, Figure 4c yes Figure 4a A three-dimensional schematic diagram of the main body shell from another perspective, Figure 4d yes Figure 4b The main body shell 100 is a cross-sectional schematic diagram, wherein the main body shell 100 includes a first end 110 and a second end 120, the first end 110 is for the heating body 400 to penetrate, the main body shell 100 forms an installation port 104 at the second end 120, an inner cavity 101 is formed in the main body shell 100, and the installation port 104 is connected to the inner cavity 101.

[0096] See also Figure 5a and Figure 5b , Figure 5a yes Figure 3 A three-dimensional schematic diagram of the sleeve assembly of the liquid heater, Figure 5b yes Figure 5a The sleeve assembly 200 is a three-dimensional schematic diagram from another perspective. 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 port 104.

[0097] See also Figure 6 , Figure 7 as well as Figure 8 , Figure 6 yes Figure 1 A schematic cross-sectional view of a liquid heater along the axial direction of the heating body, Figure 7 yes Figure 6 Schematic diagram of the assembly of the flow channel and the heating body in the liquid heater, Figure 8 yes Figure 3The three-dimensional schematic diagram of the water inlet and outlet shell of the liquid heater is shown in FIG. 3, wherein the water inlet and outlet shell 300 is formed with a water inlet 300a and a water outlet 300b. The water inlet and outlet shell 300 is connected to the installation port 104 to form a flow channel 105 together with the main shell 100 and the sleeve assembly 200. The head and tail ends of the flow channel 105 are respectively connected to the water inlet 300a and the water outlet 300b. The head and tail ends of the flow channel 105 refer to the direction of liquid flow in the flow channel 105. The end where the liquid flows in is the head end, and the end where the liquid flows out is the tail end.

[0098] The heating body 400 is disposed in the flow channel 105 through the first end 110 of the main housing 100 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.

[0099] 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 detachably connected main body shell 100, a water inlet and outlet shell 300 and a sleeve assembly 200, which is convenient for the disassembly and assembly of the sleeve assembly 200 in the flow channel 105. The functional component 201 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 replacement of sleeve assemblies 200 with different functions. In addition, the water inlet and outlet shell 300 can also be detachable to facilitate replacement of different inlet and outlet water specifications.

[0100] 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.

[0101] See again Figure 5a and Figure 5b In this embodiment, the functional component 201 is a spiral flow guide component. When the liquid flows through the flow guide component, the flow guide component can guide the liquid to flow in a proper 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 on the surface of the heating body 400. Fig. 9The schematic diagram shows the state of the fluid in the flow channel 105 flowing in a spiral. 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.

[0102] See again Figure 6 and Figure 7 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 300a and the water outlet 300b. 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 300a and the water outlet 300b. The first conduction cavity 1052 is formed by the end of the sleeve assembly 200 away from the water inlet 300a and the water outlet 300b and the inner cavity 101 of the main shell 100. 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.

[0103] Continue reading Figure 6 and Figure 7 In this embodiment, the number of the flow channel segments 1051 is greater than two. For example, the number of the flow channel segments 1051 can be four, six, eight, etc. The number of the flow channel segments 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 segments 1051, and the second conduction cavity 1053 is located on the side of the flow channel segment 1051 close to the water inlet 300a and the water outlet 300b. The two adjacent flow channel segments 1051 are connected end to end through the second conduction cavity 1053 on the side close to the water inlet 300a and the water outlet 300b. Figure 8 , the second conduction cavity 1053 is formed by the first cavity 301 in the water inlet and outlet housing 300. The number of the first conduction cavity 1052 is one more than the number of the second conduction cavity 1053. For example, when the number of the flow channel sections 1051 is four, the number of the first conduction cavity 1052 is two, and the number of the second conduction cavity 1053 is one. When the number of the flow channel sections 1051 is six, the number of the first conduction cavity 1052 is three, and the number of the second conduction cavity 1053 is two. Figure 6 and Figure 7 The case where the number of flow channel segments 1051 is four is shown.

[0104] 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.

[0105] 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 .

[0106] See again Figure 8 The water inlet and outlet shell 300 also forms a second cavity 302 and a third cavity 303. The end of the second cavity 302 away from the main shell 100 forms the aforementioned water inlet 300a, and the end of the third cavity 303 away from the main shell 100 forms the aforementioned water outlet 300b.

[0107] See again Figure 5a and Figure 5b 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. For example, when the number of flow channel sections 1051 is two, the number of sleeves in the sleeve assembly 200 is also two, and 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, and the functional component 201 can be bonded to the inner wall of the sleeve or integrally formed with the sleeve. The inner space of a sleeve forms a flow channel section 1051, specifically, the space inside the functional component 201 of the inner wall of the sleeve forms the flow channel section 1051. The plurality of sleeves include at least one pair of combined sleeves 210, and each pair of combined sleeves 210 includes two fixedly connected sleeves to form two flow channel sections 1051 in the combined sleeve 210, and one combined sleeve 210 corresponds to one first conducting cavity 1052.

[0108] See again Figure 4b , Figure 4d , Figure 5a , Figure 5b , Figure 6 and Figure 8The main body shell 100 is also formed with a first partition 111 located in the inner cavity 101. The first partition 111 is used to partition the liquid in the flow channel 105 between two adjacent first conduction chambers 1052. The water inlet and outlet shell 300 is formed with a second partition 310. The second partition 310 is used to partition the liquid in the flow channel 105 between the water inlet 300a and the adjacent second conduction chamber 1053, and to partition the liquid in the flow channel 105 between the water outlet 300b and the adjacent second conduction chamber 1053, and to partition the liquid in the flow channel 105 between two adjacent second conduction chambers 1053. In this embodiment, the purpose of setting the first partition 111 and the second partition 310 is to limit the direction of the curved flow of the fluid, so that the fluid can flow along a predetermined flow trajectory after entering the flow channel 105 from the water inlet 300a.

[0109] Furthermore, the first partition 111 also extends toward the direction close to the water inlet 300a and the water outlet 300b to not exceed the second conduction cavity 1053, and the extension portion is the first extension portion 111a, and the first extension portion 111a is located between the first conduction cavity 1052 and the second conduction cavity 1053 in the extension direction of the flow channel section 1051. The outer surface of the first extension portion 111a can fit the outer surface of the combined sleeve 210, and the first extension portion 111a fits the upper and lower walls of the inner cavity 101, so that the liquid in the flow channel 105 can completely enter the interior of the combined sleeve 210, so that the liquid can flow along a predetermined curved trajectory in the flow channel 105.

[0110] See again Figure 8 The second partition 310 also extends in a direction away from the water inlet 300a and the water outlet 300b to a position not exceeding the first conduction cavity 1052. The extension portion is the second extension portion 320. The second extension portion 320 is located between the first conduction cavity 1052 and the second conduction cavity 1053 in the extension direction of the flow channel section 1051. The second extension portion 320 includes two support ribs 321 separated from each other, and the two support ribs 321 are spaced to form a mounting gap 322. Correspondingly, in combination with Figure 5a and Figure 5bThe outer surfaces of the two sleeves of the combined sleeve 210 are fixedly connected by the connecting strip 211. When the water inlet and outlet housing 300 moves in the direction close to the combined sleeve 210, the connecting strip 211 on the combined sleeve 210 is inserted into the installation seam 322 of the second extension 320, and the installation between the combined sleeve 210 and the water inlet and outlet housing 300 is realized. A limiting portion 212 is also fixed to one end of the combined sleeve 210 away from the water inlet and outlet housing 300, which is used to limit the second extension 320. Each combined sleeve 210 can be first installed to the water inlet and outlet housing 300, and then installed as a whole to the inner cavity 101 of the main body housing 100, or each combined sleeve 210 can be first installed to the inner cavity 101 of the main body housing 100, and then the water inlet and outlet housing 300 is installed. Furthermore, the outer surface of the second extension portion 320 can fit the outer surface of the combined sleeve 210, and at the same time, the second extension portion 320 fits the upper and lower walls of the inner cavity 101, so that the liquid in the flow channel 105 can completely enter the interior of the combined sleeve 210, allowing the liquid to flow along a predetermined curved trajectory in the flow channel 105.

[0111] The first partitions 111 and the second partitions 310 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 310 is one more than the number of the first partitions 111. 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 111 is one, the number of the second conduction cavities 1053 is one, and the number of the second partitions 310 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 111 is two, the number of the second conduction cavities 1053 is two, and the number of the second partitions 310 is three.

[0112] In order to achieve the fixation of the sleeve assembly 200 in the main shell 100, a step for abutting the end of the sleeve assembly 200 is formed inside the main shell 100 at a position of the end of the sleeve assembly 200 away from the water inlet 300a and the water outlet 300b. After the sleeve assembly 200 is installed into the inner cavity 101 of the main shell 100, the end of the sleeve assembly 200 away from the water inlet 300a and the water outlet 300b is abutted by the step, and at the same time, the end of the sleeve assembly 200 close to the water inlet 300a and the water outlet 300b is abutted by the part of the docking installation port 104 of the water inlet and outlet shell 300, thereby achieving the fixation of the sleeve assembly 200 in the main shell 100.

[0113] See also Figure 3 ,as well as Fig.10a and Fig.10b , Fig.10a yes Figure 3 A three-dimensional schematic diagram of multiple heating bodies in a liquid heater, Fig.10b yes Fig.10aThe 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.

[0114] See again Figure 4a In order to enable the heating body 400 to penetrate the first end 110 of the main shell 100, the main shell 100 has a heating body mounting portion 150 at the first end 110. The heating body mounting portion 150 is integrally formed with other parts of the main shell 100. The heating body mounting portion 150 is provided with a through hole 151 for the heating body 400 to penetrate. The number of the through holes 151 is the same as the number of the heating bodies 400. One through hole 151 corresponds to one heating body 400, and the cylindrical heating body 410 of the heating body 400 passes through the through hole 151.

[0115] In order to achieve the fixation of the heating body 400 after it passes through the through hole 151, in this embodiment, the heating body 400 also includes a mounting sleeve 420 fixedly sleeved on the outside of the cylindrical heating body 410, and the liquid heater 10 also includes a pressing plate 500. After the cylindrical heating body 410 passes through the through hole 151, the mounting sleeve 420 abuts against the side of the heating body mounting portion 150 away from the water inlet 300a and the water outlet 300b, and then the pressing plate 500 is pressed on the mounting sleeve 420, and the pressing plate 500 is connected and fixed to the heating body mounting portion 150, thereby achieving the fixation of the heating body 400. Specifically, refer to Figure 4a and Fig.11 , Fig.11 yes Figure 3 The three-dimensional schematic diagram of the pressure plate of the liquid heater, the first fixing hole 152 is correspondingly opened on the heating body mounting part 150 and the pressure plate 500, and the first fixing hole 152 is located on the radial outside of the heating body 400. A first fastener such as a screw is inserted into the first fixing hole 152 on the heating body mounting part 150 and the pressure plate 500, so as to realize the connection and fixation between the heating body mounting part 150 and the pressure plate 500, and the heating body 400 is fixed between the heating body mounting part 150 and the pressure plate 500.

[0116] In order to prevent liquid leakage from occurring at the perforated portion between the heater 400 and the heater mounting portion 150 , a sealing ring may be provided between the heater 400 and the heater mounting portion 150 .

[0117] See again Figure 3 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 300b and the water inlet 300a. After the heating body 400 and the pressure plate 500 are installed in the main shell 100, the first cover plate 130a can shield the heating body 400 and the pressure plate 500 to prevent them from being exposed.

[0118] See again Figure 3 In this embodiment, the liquid heater 10 further includes a circuit board 600, and the circuit board 600 is electrically connected to the heating body 400. Figure 4c 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 below the flow channel 105 . Of course, the circuit board 600 can also be set above the flow channel 105 or at other positions.

[0119] See again Figure 3 In this embodiment, the liquid heater 10 further includes a heat dissipation mechanism 700, combined with Fig.12 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.

[0120] 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.12 The heat dissipation mechanism 700 may further include a heat dissipation bracket 720 , on which the heat dissipation block 710 is fixed. The heat dissipation bracket 720 may be fixed to the partition 140 or other parts of the main shell 100 by fasteners such as screws.

[0121] See again Figure 3 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.

[0122] 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.

[0123] Combination Figure 3 , Figure 4c and Fig.12 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 300a and the end of the sleeve assembly 200 close to the water inlet 300a. The probe of the water inlet temperature sensor 810 extends upward into the water inlet end of the flow channel 105 through the first insertion hole 142. The water inlet temperature sensor 810 can be directly fixed on the heat dissipation bracket 720, or installed through a separate bracket.

[0124] 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 end of the flow channel 105. The second insertion hole 143 is located between the water outlet 300b and the end of the sleeve assembly 200 close to the water outlet 300b. The probe of the outlet water temperature sensor 820 extends upward into the outlet 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 first bracket 821. The first bracket 821 is provided with a first mounting hole 822 for fasteners such as screws to penetrate to achieve the fixing of the first bracket 821 on the partition 140.

[0125] The anti-dry-burn 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-burn temperature sensor 830 is inserted into the flow channel section 1051 through the third insertion hole 144 and contacts the heating body 400. The anti-dry-burn temperature sensor 830 is fixedly mounted on the partition 140 through a second bracket 831. The second bracket 831 is provided with a second mounting hole 832 for fasteners such as screws to penetrate and fix the second bracket 831 on the partition 140.

[0126] See again Figure 1 and Figure 3 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. The high-voltage socket 910 and the low-voltage socket 920 can both be installed on the side of the main body shell 100 facing away from the pressure plate 500 and located above the flow channel 105, or can be installed at other positions of the main body shell 100.

[0127] See again Figure 3 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.

[0128] 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.

[0129] 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 detachably connected main body shell, a water inlet and outlet shell, a sleeve assembly and a heating body; The main body shell comprises a first end and a second end, the first end is for the heating body to penetrate, the main body shell forms a mounting opening 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 water inlet and outlet housing is formed with a water inlet and a water outlet, and the water inlet and outlet housing is butted against the mounting port to form a flow channel together with the main housing and the sleeve assembly, 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 first end 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 at least one pair of combined sleeves, each pair of combined sleeves includes two fixedly connected sleeves to form two flow channel sections in the combined sleeves, and one combined sleeve corresponds to one first conducting cavity.

6. The liquid heater according to claim 5, characterized in that A first partition is also formed in the main body shell, and the first partition is used to separate the liquid in the flow channel between two adjacent first conduction chambers; the water inlet and outlet shell is also formed with a second partition located in the inner chamber, and the second partition is used to separate the liquid in the flow channel between the water inlet and the adjacent second conduction chamber, and is used to separate the liquid in the flow channel between the water outlet and the adjacent second conduction chamber, and is used to separate 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 6, characterized in that 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 section. 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.

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