Constant temperature device and water heater

Abstract

The utility model discloses a constant temperature device and a water heater. The constant temperature device comprises a valve body, the valve body is made of plastic, a water outlet flow channel, a first water inlet flow channel, a second water inlet flow channel and a mounting channel are formed in the valve body, and a first communicating hole, a second communicating hole and a third communicating hole are formed in the inner wall of the mounting channel; the first communicating hole, the second communicating hole and the third communicating hole are sequentially arranged, the first communicating hole is communicated with the first water inlet flow channel, the second communicating hole is communicated with the second water inlet flow channel, and the third communicating hole is communicated with the mounting channel; the mounting channel is respectively communicated with the water outlet flow channel, the first water inlet flow channel and the second water inlet flow channel; and the automatic temperature adjusting assembly is arranged on the mounting channel and is configured to adjust the opening degree of the second communicating hole according to the temperature of the water outlet flow channel. Compact design of the overall structure of the constant temperature device is achieved, and the overall size is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of household appliance technology, and in particular relates to a constant temperature device and a water heater. Background Technology

[0002] Water heaters are currently a common household appliance. A water heater typically consists of a water tank and an electric heating element inside the tank. When the heating element is powered on, it heats the water in the tank. The tank is connected to an inlet pipe and an outlet pipe; cold water enters the tank through the inlet pipe, while hot water is output from the outlet pipe.

[0003] In order to achieve a constant temperature output, water heaters in the prior art are usually equipped with a thermostat to control the water temperature. Chinese Patent Publication No. CN218672655U discloses a thermostat and water heater, which uses an automatic temperature adjustment component to automatically control the mixing ratio of hot and cold water to achieve a constant temperature output and prevent scalding.

[0004] However, in actual manufacturing, to meet the design requirements of complex internal flow channels, the valve body is usually formed by metal casting, and then the automatic temperature control component is assembled onto the valve body. However, valve bodies made of metal have two drawbacks: firstly, the use of metal in manufacturing the valve body leads to higher manufacturing costs; secondly, the casting process results in a rough surface in the flow channels, making them prone to scaling, which reduces water flow over time, leading to poor reliability. Therefore, how to design a technology that reduces manufacturing costs and improves reliability is the technical problem this invention aims to solve. Utility Model Content

[0005] This utility model provides a constant temperature device and a water heater, which reduces the manufacturing cost of the constant temperature device and improves its reliability, thereby improving the reliability of the water heater.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In one aspect, the present invention provides a constant temperature device, comprising:

[0008] The valve body is provided with an outlet channel, a first inlet channel, a second inlet channel, and an installation channel. The first inlet channel and the second inlet channel are arranged side by side on the valve body. The valve body is also provided with a first connecting pipe. A second connecting pipe is provided on one side of the first connecting pipe. A connecting channel is provided on the other side of the first connecting pipe. A partition is provided in the connecting channel, and the partition divides the connecting channel into a first sub-channel and a second sub-channel.

[0009] An automatic temperature control component is disposed on the installation channel and configured to adjust the opening of the second inlet channel according to the temperature of the outlet channel;

[0010] An auxiliary connector is provided with an annular water groove on its pipe wall and two first sealing rings on its pipe wall, with the annular water groove located between the two first sealing rings.

[0011] The auxiliary connecting pipe is inserted into the first connecting pipe and communicates with the first water inlet channel through the first sub-channel, and the second connecting pipe communicates with the second water inlet channel through the annular water tank and the second sub-channel in sequence.

[0012] In one embodiment of this application, a first through hole, a second through hole and a third through hole are provided on one side wall of the first connecting pipe, wherein the first through hole and the second through hole are arranged opposite to each other, and the second through hole and the third through hole are arranged side by side along the axis of the first connecting pipe.

[0013] The second connecting pipe is connected to the first through hole, the first sub-channel is connected to the second through hole, and the second sub-channel is connected to the third through hole; the annular water tank is located between the first through hole and the second through hole.

[0014] In one embodiment of this application, one end of the valve body is provided with the installation channel, and the other end of the valve body is a closed structure.

[0015] In one embodiment of this application, the valve body is provided with an outlet channel, a first inlet channel, and a second inlet channel on its side wall. The first inlet channel and the second inlet channel are arranged on the side close to the first connecting pipe, and the outlet channel is arranged away from the first connecting pipe.

[0016] In one embodiment of this application, the automatic temperature control assembly includes a plunger, a sealing plug, a temperature sensing component, a positioning component, and a driving component. The plunger has a fixing hole and at least one through hole, with the through hole located on one side of the fixing hole. The temperature sensing component includes a cylinder and a push rod, with the push rod inserted into the cylinder, forming a temperature sensing cavity between the push rod and the inside of the cylinder. The temperature sensing cavity is filled with a material that expands and contracts with temperature. The cylinder is disposed in the fixing hole. The positioning component is disposed between the push rod and the sealing plug. The driving component is used to drive the positioning component and move it relative to the sealing plug.

[0017] The sealing plug is disposed on the installation channel, the plunger is slidably and sealingly disposed in the valve body, the cylinder is located in the flow path between the first water inlet channel and the water outlet channel, the thermal expansion and contraction material is used to drive the push rod to move by relying on the water temperature change, and the push rod is used to drive the plunger to slide to control the opening and closing of the second water inlet channel.

[0018] In one embodiment of this application, the sealing plug is provided with a slidable slider, the slider is provided with a screw, the sealing plug is provided with a rotatable shaft, the inner end of the shaft is provided with a threaded hole, the screw is threaded into the threaded hole, the outer end of the shaft is connected to the driving component, and the positioning component is provided on the slider.

[0019] In one embodiment of this application, the slider is provided with a mounting groove, the positioning component is slidably disposed in the mounting groove, and a return spring is also provided between the positioning component and the mounting groove.

[0020] In one embodiment of this application, a second sealing ring is provided on the outer periphery of the plunger, the second sealing ring is sandwiched between the plunger and the inner wall of the valve body, and the second sealing ring is located between the first water inlet channel and the second water inlet channel.

[0021] In one embodiment of this application, the automatic temperature control component includes a mounting sleeve and an elastic reset component. The outer wall of the mounting sleeve is provided with a hollow structure, the cylinder is disposed in the mounting sleeve, and the elastic reset component is used to apply an elastic force to the plunger or the cylinder in the direction of the sealing plug.

[0022] In another aspect, the present invention also provides a water heater, including a water tank having an inlet pipe and an outlet pipe, the inlet pipe being provided with a tee, and also including the aforementioned thermostatic device; the first connecting pipe of the thermostatic device is connected to the outlet pipe, and the second connecting pipe of the thermostatic device is connected to the tee.

[0023] Compared with the prior art, the advantages and positive effects of this utility model are as follows: by using a valve body made of plastic material, the surface of the flow channel formed inside the valve body is smoother and flatter. This ensures that scale adheres to the surface of the flow channel during water flow, thereby improving the anti-clogging performance and improving the reliability of use. In addition, by providing a first connecting hole, a second connecting hole and a third connecting hole arranged in sequence on the inner wall of the installation channel, the water circuit connection requirements between the first water inlet channel, the second water inlet channel and the water outlet flow and the installation channel are met, and the processing requirements of manufacturing the valve body with plastic material are realized to reduce manufacturing costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the constant temperature device of this utility model;

[0026] Figure 2 This is an exploded view of an embodiment of the constant temperature device of this utility model;

[0027] Figure 3 This is a schematic diagram of the valve body in one embodiment of the constant temperature device of this utility model;

[0028] Figure 4 for Figure 3 Sectional view along line AA;

[0029] Figure 5 for Figure 3 Sectional view along the BB direction;

[0030] Figure 6 for Figure 2 A schematic diagram of the automatic temperature control component;

[0031] Figure 7 for Figure 2 Cross-sectional view of the automatic temperature control component;

[0032] Figure 8 for Figure 2 Schematic diagram of the structure of the auxiliary cannula;

[0033] Figure 9 This is a schematic diagram of the structure of an embodiment of the water heater of this utility model;

[0034] Figure 10 for Figure 9 A schematic diagram of a medium-sized water heater with the casing removed;

[0035] Figure 11 for Figure 10 A schematic diagram of the structure of the protective cover after disassembly;

[0036] Figure 12 for Figure 10 A schematic diagram of the central partition.

[0037] Figure label:

[0038] 1. Valve body; 11. Outlet channel; 12. First inlet channel; 13. Second inlet channel; 14. Installation channel; 15. First connecting channel; 16. Second connecting channel;

[0039] 141. First connecting hole; 142. Second connecting hole; 143. Third connecting hole; 131. Fourth connecting hole; 132. Fifth connecting hole; 133. Sixth connecting hole;

[0040] 2. Automatic temperature control component; 21. Mounting cylinder; 22. Temperature sensing element; 23. Plunger; 24. Positioning sleeve; 25. Sealing plug; 26. Spring; 27. First sealing ring; 28. Adjusting component; 29. ​​Drive motor;

[0041] 211. First water inlet; 212. Second water inlet; 213. Second sealing ring;

[0042] 3. Auxiliary cannula; 31. Sealing part;

[0043] 4. End cap;

[0044] 5. Water tank; 51. Tank shell; 52. Inner liner; 53. Inlet pipe; 54. Outlet pipe; 55. T-pipe; 56. Protective cover;

[0045] 511. Partition; 512. Mounting base; 521. Inlet branch pipe; 522. Outlet branch pipe. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0049] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0053] Example 1, as Figures 1-8 As shown, this embodiment proposes a temperature control device, including:

[0054] The valve body 1 is made of plastic and has an outlet channel 11, a first inlet channel 12, a second inlet channel 13, and an installation channel 14. The inner wall of the installation channel 14 has a first connecting hole 141, a second connecting hole 142, and a third connecting hole 143. These holes are arranged sequentially. The first connecting hole 141 communicates with the first inlet channel 12, the second connecting hole 142 communicates with the second inlet channel 13, and the third connecting hole 143 communicates with the installation channel 14. The installation channel 14 communicates with the outlet channel 11, the first inlet channel 12, and the second inlet channel 13.

[0055] Automatic temperature control component 2, which is disposed on the installation channel 14 and configured to adjust the opening of the second connecting hole 142 according to the temperature of the water outlet channel 11.

[0056] Specifically, the valve body 1 in the constant temperature device provided in this embodiment is made of plastic. Plastic has a lower manufacturing cost. Furthermore, during the process of forming the valve body 1 by injection molding, the flow channel formed in the valve body 1 has a smoother inner wall. On the one hand, this can reduce water resistance, and on the other hand, it can reduce the formation of scale on the inner wall, thereby improving the reliability of use.

[0057] Meanwhile, in order to meet the requirement that hot and cold water flow into the valve body 1 and be adjusted in proportion by the automatic temperature control component 2, the inner wall of the installation channel 14 is formed with three through holes. The first through hole 141 is connected to the first water inlet channel 12 to input cold water into the automatic temperature control component 2, the second through hole 142 is connected to the second water inlet channel 13 to input hot water into the automatic temperature control component 2, and the third through hole 143 is used to transport the water adjusted by the automatic temperature control component 2 to the water outlet channel 11 to finally output constant temperature water.

[0058] In one embodiment, the first water inlet channel 12, the second water inlet channel 13, and the water outlet channel 11 are arranged sequentially along the length of the installation channel 14, and the first water inlet channel 12, the second water inlet channel 13, and the water outlet channel 11 are arranged intersecting the installation channel 14.

[0059] Specifically, in order to facilitate injection molding and simplify the mold structure, the first water inlet channel 12, the second water inlet channel 13, and the water outlet channel 11 are distributed along the installation channel 14, respectively. In this way, the first water inlet channel 12, the second water inlet channel 13, and the water outlet channel 11 can be directly connected to the installation channel 14 through the drinking water connection hole to achieve the water flow requirements of the corresponding water flow path.

[0060] In another embodiment, to facilitate the connection of external pipelines, the positions of the first inlet channel 12, the second inlet channel 13, and the outlet channel 11 on the valve body 1 are optimized to better meet the requirements for convenient connection of external pipelines. Specifically, the second inlet channel 13 and the outlet channel 11 are respectively arranged intersecting with the installation channel 14; the first inlet channel 12 extends along the length direction of the installation channel and is arranged intersecting with the installation channel 14.

[0061] The valve body 1 is also provided with a first connecting flow channel 15 and a second connecting flow channel 16, the first connecting flow channel 15 and the second connecting flow channel 16 extending along the length direction of the mounting channel, respectively.

[0062] The constant temperature device also includes an auxiliary tube 3, which has two side-by-side sealing parts 31 arranged around its outer periphery, forming a water flow interval between two adjacent sealing parts 31; the auxiliary tube 3 is sealed and inserted into the second water inlet channel 13 through the sealing parts 31.

[0063] Wherein, one end of the first connecting channel 15 is connected to the first connecting hole 141, the other end of the first connecting channel 15 is connected to the first water inlet channel 12 through the water flow interval, one end of the second connecting channel 16 is connected to the second connecting hole 142, and the other end of the second connecting channel 16 is connected to the auxiliary insertion tube 3.

[0064] Specifically, in actual use, cold water and hot water will be input into the valve body 1. To facilitate the connection of external cold water and hot water supply pipes, the first inlet channel 12 and the second inlet channel 13 are arranged together and cross each other. An auxiliary insertion pipe 3 is provided in the second inlet channel 13. The auxiliary insertion pipe 3 is sealed inside the second inlet channel 13 by a sealing part 31. Hot water will flow into the second inlet channel 13 through the auxiliary insertion pipe 3 and then flow to the second connecting hole 142 through the second connecting channel 16. Additionally, the water flowing into the first inlet channel 12 first flows into the water flow interval formed between the two sealing parts 31 in the second inlet channel 13 and then flows to the first connecting hole 141 through the first connecting channel 15.

[0065] Furthermore, since the first water inlet channel 12 and the second water inlet channel 13 are connected to each other during the processing of the valve body 1, the structure of the mold can be simplified and the processing difficulty can be reduced; at the same time, the auxiliary pipe 3 set in the second water inlet channel 13 can separate the cold water and hot water to meet the requirement of independent flow of cold and hot water.

[0066] In another embodiment, the inner wall of the second water inlet channel 13 is provided with a fourth connecting hole 131, a fifth connecting hole 132, and a sixth connecting hole 133.

[0067] The fourth connecting hole 131 and the fifth connecting hole 132 are located between the two sealing parts 31. The fourth connecting hole 131 is connected to the first water inlet channel 12, and the fifth connecting hole 132 is connected to the first connecting channel 15.

[0068] The sixth connecting hole 133 is connected to the second connecting channel 16.

[0069] Specifically, since the first water inlet channel 12 is connected to the first connecting hole 141 via the second water inlet channel 13 to meet the water flow requirements, in order to facilitate the connection of the corresponding flow paths during the injection molding process, the inner wall of the first water inlet channel 12 is formed with a fourth connecting hole 131, a fifth connecting hole 132 and a sixth connecting hole 133. In this way, the first connecting channel 15 and the first water inlet channel 12 are all arranged crosswise with the second water inlet channel 13, so as to facilitate the arrangement of the corresponding mold rods in the mold to form the corresponding flow paths, and also to facilitate the smooth demolding later.

[0070] In one embodiment, the first connecting channel 15 and the second connecting channel 16 are only used to connect the first water inlet channel 12 and the second water inlet channel 13 with the installation channel 14. For this purpose, the first connecting channel 15 forms an opening on the surface of the valve body 1, and the second connecting channel 16 forms an opening on the surface of the valve body 1 with a cap 4.

[0071] Specifically, during the injection molding process, after the valve body 1 is formed, the opening formed in the first connecting channel 15 on the surface of the valve body 1 can be sealed by the end cap 4 to ensure that the water input from the first water inlet channel 12 flows into the installation channel 14 through the first connecting channel 15. Correspondingly, the opening formed in the second connecting channel 16 on the surface of the valve body 1 can be sealed by the end cap 4 to ensure that the water input from the second water inlet channel 13 flows into the installation channel 14 through the second connecting channel 16.

[0072] In another embodiment, the second inlet channel 13 and the outlet channel 11 are arranged in opposite directions.

[0073] In another embodiment of this application, in order to achieve a modular design, the automatic temperature control component 2 includes an installation cylinder 21, a temperature sensing component 22, a plunger 23, a positioning sleeve 24, a sealing plug 25, and a spring 26. The installation cylinder 21 is provided with a first water inlet hole 211 and a second water inlet hole 212, and the first water inlet hole 211 and the second water inlet hole 212 are arranged sequentially along the length direction of the installation cylinder 21.

[0074] The positioning sleeve 24 is disposed at one port of the mounting cylinder 21, the sealing plug 25 is disposed at the other port of the mounting cylinder 21, the plunger 23 is slidably disposed in the mounting cylinder 21 and located between the positioning sleeve 24 and the sealing plug 25, and a first sealing ring 27 is disposed on the outer periphery of the plunger 23. The first sealing ring 27 is pressed between the mounting cylinder 21 and the plunger 23, and the first sealing ring 27 is located between the first water inlet hole 211 and the second water inlet hole 212.

[0075] The temperature sensing component 22 is disposed on the plunger 23, and the spring 26 is clamped between the temperature sensing component 22 and the positioning sleeve 24;

[0076] The mounting cylinder 21 is disposed in the mounting channel 14. The first water inlet hole 211 is connected to the first water inlet channel 12, the second water inlet hole 212 is connected to the second water inlet channel 13, and the mounting cylinder 21 is connected to the water outlet channel 11 through the positioning sleeve 24.

[0077] Specifically, the automatic temperature control component 2, as a modular structure, can be pre-assembled together and then assembled into the installation channel 14 of the valve body 1. Among them, the mounting cylinder 21, as the main load-bearing component, mounts the temperature sensing component 22, plunger 23, positioning sleeve 24, sealing plug 25 and spring 26 on the mounting cylinder 21, and then the entire assembly is installed into the installation channel 14 through the mounting cylinder 21.

[0078] To ensure that the hot and cold water are independent before mixing inside the mounting cylinder 21, multiple second sealing rings 213 can be provided on the outside of the mounting cylinder 21. This results in second sealing rings 213 being provided on both sides of the first water inlet hole 211, and similarly, second sealing rings 213 being provided on both sides of the second water inlet hole 212. After the mounting cylinder 21 is inserted into the mounting channel 14, the second sealing rings 213 are pressed between the inner wall of the mounting channel 14 and the mounting cylinder 21, thereby achieving a sealed connection between the first water inlet hole 211 and the first water inlet channel 12 through the first connecting hole 141, and a sealed connection between the second water inlet hole 212 and the second water inlet channel 13 through the second connecting hole 142.

[0079] In one embodiment, in order to adjust the temperature of the constant temperature outlet water, the automatic temperature control component 2 further includes an adjusting member 28, the adjusting member 28 is provided with an external thread section, and the adjusting member 28 is slidably disposed in the mounting cylinder 21;

[0080] The sealing plug 25 is rotatably disposed in the mounting cylinder 21. The inner end of the sealing plug 25 is provided with a threaded hole, and the outer end of the sealing plug 25 is provided with a drive shaft. The external threaded section is threadedly connected in the threaded hole.

[0081] Specifically, the adjusting component 28 can move within the mounting cylinder 21 to adjust the extension and retraction stroke of the temperature sensing component 22. The method by which the adjusting component 28 adjusts the constant temperature outlet water temperature can be referred to existing technologies, and will not be limited or elaborated here.

[0082] In some embodiments, the automatic temperature control component 2 further includes a drive motor 29, which is disposed on the valve body 1 and drivenly connected to the drive shaft.

[0083] Specifically, the drive motor 29 can be energized to drive the sealing plug 25 to rotate, thereby automatically adjusting the position of the adjusting component 28 to achieve automatic adjustment of the water temperature of the outlet water.

[0084] By using a valve body 1 supported by plastic material, the surface of the flow channel formed inside the valve body 1 is smoother and flatter. This ensures that scale adheres to the surface of the flow channel during water flow, thereby improving the anti-clogging performance and improving the reliability of use. In addition, by providing a first connecting hole 141, a second connecting hole 142 and a third connecting hole 143 arranged in sequence on the inner wall of the installation channel 14, the water circuit connection requirements between the first water inlet channel 12, the second water inlet channel 13 and the water outlet flow and the installation channel 14 are met, and the processing requirements of manufacturing the valve body 1 with plastic material are realized to reduce the manufacturing cost.

[0085] Example 2: Another embodiment of this application provides a water heater, including a water tank 5, on which an inlet pipe 53 and an outlet pipe 54 are provided, and a constant temperature device is also provided. The hot water output from the constant temperature water tank 5 enters the constant temperature device for mixing of hot and cold water as needed to output constant temperature water.

[0086] In the case where the thermostat is located outside the water tank 5, the water outlet pipe 54 on the water tank 5 is connected to the second water inlet channel 13 of the thermostat.

[0087] To achieve a compact design, the thermostat can be integrated into the water tank 5. As shown in the figure…, an embodiment of this application provides a water heater including:

[0088] Water tank 5 includes a tank shell 51, an inner liner 52, an inlet pipe 53, and an outlet pipe 54. A partition 511 is provided in the water tank 5, which divides the tank shell 51 into a first cavity and a second cavity. An inlet branch pipe 521 and an outlet branch pipe 522 are provided on the inner liner 52, which extend into the inner liner 52. The inner liner 52 is located in the first cavity. The inlet pipe 53 and the outlet pipe 54 are respectively provided on the tank shell and extend to the outside of the tank shell 51.

[0089] A thermostatic device having a first inlet, a second inlet, and an outlet, the thermostatic device being configured to adjust the water inflow through the first inlet and the second inlet to maintain a constant water temperature at the outlet.

[0090] The constant temperature device is installed in the second cavity. The water inlet pipe 53 is connected to the first water inlet and the water inlet branch pipe 521 respectively. The water outlet pipe 54 is connected to the water outlet. The second water inlet is connected to the water outlet branch pipe 522.

[0091] Specifically, the housing 51 has a partition 511 to form two cavities. The first cavity is used to install the inner liner 52, while the second cavity can be used to install the thermostat and electrical components such as the control board. In this way, the thermostat is built into the housing 51 without occupying space outside the housing 51.

[0092] In addition, to facilitate the connection of the water circuit within the housing 51 for the thermostat, the inner liner 52 integrates an inlet branch pipe 521 and an outlet branch pipe 522, while the housing 51 has exposed inlet pipe 53 and outlet pipe 54. The inlet pipe 53 can supply cold water to both the inner liner 52 and the thermostat. Hot water from the inner liner 52 is output through the outlet branch pipe 522 and then enters the thermostat. The water output from the outlet of the thermostat is finally output to the outside of the housing 51 through the outlet pipe 54.

[0093] The constant temperature device can be a constant temperature mixing device in conventional technology, or it can be the constant temperature device in Embodiment 1 of this application, that is, the water outlet channel 11 is provided with a water outlet, the first water inlet channel 12 is provided with a first water inlet, and the second water inlet channel 13 is provided with a second water inlet. No restrictions or details are made here.

[0094] In one embodiment, the water inlet pipe 53 is connected to the first water inlet and the water inlet branch pipe 521 respectively via a three-way pipe 55.

[0095] Specifically, a three-way pipe 55 is provided in the second cavity of the housing 51 to connect the water inlet pipe 53 to the thermostat and the water inlet branch pipe 521 respectively.

[0096] In another embodiment, in order to facilitate the installation and fixing of the constant temperature device, the partition 511 is provided with a mounting base 512, and the anti-scalding module is disposed on the mounting base 512.

[0097] Specifically, the valve body 1 of the thermostat is fixedly installed on the mounting base 512 so that operators can perform fixed installation during the production stage.

[0098] The housing 51 may also be provided with a protective cover 56, which is mounted on the mounting base 512 and covers the thermostat; the protective cover 56 is also provided with an avoidance opening (unmarked), which is configured to allow water pipes connected to the anti-scalding module to be laid.

[0099] Specifically, the design of the protective cover 56 makes the piping inside the second cavity more neatly distributed, and the protective cover 56 can protect the piping connection parts of the constant temperature device to improve the reliability of use.

[0100] In some embodiments of this application, the shell 51 is provided with two inner liner 52, one of the inner liner 52 is provided with the water inlet branch pipe 521, and the other inner liner 52 is provided with the water outlet branch pipe 522, and the two inner liner 52 are interconnected.

[0101] The partition 511 is provided with two mounting ports, the end of the inner liner 52 is located in the corresponding mounting port, and the mounting base 512 is located between the two mounting ports.

[0102] Specifically, the housing 51 is equipped with two inner tanks 52 to increase the volume of the water heater, and the thermostat can be arranged in the second cavity between the ends of the two inner tanks 52 to make full and reasonable use of the installation space in the second cavity for installation, while also facilitating the design of water pipe layout and optimizing pipe connection.

[0103] By setting a partition 511 in the housing 51, the housing 51 is divided into two cavities. The anti-scalding module is built into the second cavity and connected to the water inlet branch pipe 521 and water outlet branch pipe 522 on the inner tank 52 inside the housing 51. At the same time, in order to meet the connection requirements between the water heater and the external pipeline, the housing 51 is also provided with exposed water inlet pipe 53 and water outlet pipe 54. The water inlet pipe 53 and water outlet pipe 54 are connected to the anti-scalding module inside the housing 51 through water pipes. In this way, the anti-scalding module is built into the housing 51, so as to make full use of the space inside the housing 51 to meet the installation requirements of the anti-scalding module without occupying additional space outside the housing 51. This reduces the external space occupied by the water heater and achieves a compact structural design. Furthermore, during on-site installation, only the external water pipe needs to be connected to the water inlet pipe 53 and water outlet pipe 54 on the housing 51. There is no need to connect the anti-scalding module on-site, reducing the difficulty of on-site installation.

[0104] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A constant temperature device, characterized in that, include: The valve body is made of plastic and has an outlet channel, a first inlet channel, a second inlet channel, and an installation channel. The inner wall of the installation channel has a first connecting hole, a second connecting hole, and a third connecting hole. These three connecting holes are arranged sequentially. The first connecting hole communicates with the first inlet channel, the second connecting hole communicates with the second inlet channel, and the third connecting hole communicates with the installation channel. The installation channel communicates with the outlet channel, the first inlet channel, and the second inlet channel, respectively. An automatic temperature control component is disposed on the installation channel and configured to adjust the opening of the second connecting hole according to the temperature of the water outlet channel.

2. The constant temperature device according to claim 1, characterized in that, The first water inlet channel, the second water inlet channel, and the water outlet channel are arranged sequentially along the length of the installation channel, and the first water inlet channel, the second water inlet channel, and the water outlet channel are arranged intersecting the installation channel.

3. The constant temperature device according to claim 1, characterized in that, The second inlet channel and the outlet channel are respectively arranged to intersect with the installation channel; The first water inlet channel extends along the length of the installation channel and intersects with the first water inlet channel. The valve body is also provided with a first connecting flow channel and a second connecting flow channel, which extend along the length direction of the mounting channel, respectively. The constant temperature device also includes an auxiliary tube, the outer periphery of which is provided with two sealing parts arranged side by side, and a water flow interval is formed between two adjacent sealing parts; the auxiliary tube is sealed and inserted into the second water inlet channel through the sealing parts. Wherein, one end of the first connecting channel is connected to the first connecting hole, the other end of the first connecting channel is connected to the first water inlet channel through the water flow interval, one end of the second connecting channel is connected to the second connecting hole, and the other end of the second connecting channel is connected to the auxiliary insertion tube.

4. The constant temperature device according to claim 3, characterized in that, The inner wall of the second water inlet channel is provided with a fourth connecting hole, a fifth connecting hole, and a sixth connecting hole. The fourth connecting hole and the fifth connecting hole are located between the two sealing parts. The fourth connecting hole is connected to the first water inlet channel, and the fifth connecting hole is connected to the first connecting channel. The sixth connecting hole is connected to the second connecting flow channel.

5. The constant temperature device according to claim 3, characterized in that, The first connecting flow channel is formed in an opening on the surface of the valve body, and the second connecting flow channel is formed in an opening on the surface of the valve body with a cap.

6. The constant temperature device according to claim 3, characterized in that, The second inlet channel and the outlet channel are arranged in opposite directions.

7. The constant temperature device according to any one of claims 1-6, characterized in that, The automatic temperature control assembly includes an installation cylinder, a temperature sensing component, a plunger, a positioning sleeve, a sealing plug, and a spring. The installation cylinder is provided with a first water inlet and a second water inlet, which are arranged sequentially along the length of the installation cylinder. The positioning sleeve is disposed at one end of the mounting cylinder, the sealing plug is disposed at the other end of the mounting cylinder, the plunger is slidably disposed in the mounting cylinder and located between the positioning sleeve and the sealing plug, a sealing ring is disposed on the outer periphery of the plunger, the sealing ring is pressed between the mounting cylinder and the plunger, and the sealing ring is located between the first water inlet hole and the second water inlet hole; The temperature sensing component is disposed on the plunger, and the spring is clamped between the temperature sensing component and the positioning sleeve; The mounting cylinder is disposed in the mounting channel. The first water inlet hole is connected to the first water inlet channel, the second water inlet hole is connected to the second water inlet channel, and the mounting cylinder is connected to the water outlet channel through the positioning sleeve.

8. The constant temperature device according to claim 7, characterized in that, The automatic temperature control component also includes an adjusting member, which has an external thread section and is slidably disposed in the mounting cylinder; The sealing plug is rotatably disposed in the mounting cylinder, the inner end of the sealing plug is provided with a threaded hole, and the outer end of the sealing plug is provided with a drive shaft; the external threaded section is threadedly connected in the threaded hole.

9. The constant temperature device according to claim 8, characterized in that, The automatic temperature control component also includes a drive motor, which is mounted on the valve body and driven by the drive shaft.

10. A water heater, comprising a water tank, wherein the water tank is provided with an inlet pipe and an outlet pipe, characterized in that, It also includes a thermostatic device as described in any one of claims 1-9, wherein the second water inlet channel of the thermostatic device is connected to the water outlet pipe.

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