Electric water heater

Abstract

The utility model discloses an electric water heater which comprises a shell provided with a water inlet connector and a water outlet connector. The heating body is arranged in the shell and provided with a water inlet and a water outlet, a water flow channel is formed in the heating body, the water inlet and the water outlet are communicated with the two ends of the water flow channel respectively, an electric heating part is further arranged in the heating body and provided with a wiring terminal, and the water inlet is far away from the wiring terminal compared with the water outlet; two ends of the water inlet pipe are respectively connected with the water inlet and the water inlet joint; the two ends of the water outlet pipe are connected with the water outlet and the water outlet connector respectively. The temperature of the water inlet side is high, water in the water flow channel can be rapidly heated, the temperature of the water outlet side is low, when water is cut off, the water temperature of the water outlet side can be reduced, and a user is prevented from being scalded.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to an electric water heater. Background Art

[0002] At present, water heaters are common household appliances in people's daily lives. Water heaters are divided into electric water heaters, gas water heaters, heat pump water heaters and solar water heaters. Electric water heaters are widely used because of their convenience. However, during use, electric water heaters have the problem of excessively high closed water temperature rise, and users are prone to burns when using them again.

[0003] The existing Chinese patent with publication number CN202361651U discloses an instant constant temperature electric water heater, including a constant temperature electric water heater body, a heating tank, a water inlet pipe and a water outlet pipe, a heating body is arranged inside the heating tank, and the constant temperature electric water heater body also includes a temperature control device, which includes a signal input end, a control unit and a signal output end in sequence according to the signal guide; the control unit includes a single chip microcomputer and a thyristor board; an inlet water temperature sensor is arranged on the water inlet pipe, and the signal output end of the inlet water temperature sensor is connected to the signal input end of the temperature control device; an inlet water flow sensor is arranged on the water inlet pipe, and the signal output end of the inlet water flow sensor is connected to the signal input end of the temperature control device; an outlet water temperature sensor is arranged on the water outlet pipe, and the signal output end of the outlet water temperature sensor is connected to the signal input end of the temperature control device; the temperature control device, the inlet water temperature sensor, the inlet water flow sensor and the outlet water temperature sensor are electrically connected; the single chip microcomputer is electrically connected to the thyristor board, and the thyristor board is electrically connected to the heating body.

[0004] However, although the instant constant temperature electric water heater detects the inlet water temperature and outlet water temperature by setting an inlet water temperature sensor and an outlet water temperature sensor, the water near the outlet pipe is still heated by the heating body after the water heater is turned off or shut down. When the water is used again, there is still a risk of scalding the user, resulting in a poor user experience. In view of this, how to design a water heater technology that can reduce the probability of users being scalded and improve user experience is a technical problem to be solved by the utility model. Summary of the invention

[0005] The utility model provides an electric water heater, which reduces the probability of users being scalded and improves user experience.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] In one aspect, the utility model provides an electric water heater, comprising:

[0008] A housing, wherein the housing is provided with a water inlet joint and a water outlet joint;

[0009] A heating body, the heating body is arranged in the shell, the heating body is provided with a water inlet and a water outlet, a water flow channel is formed inside the heating body, the water inlet and the water outlet are respectively connected to two ends of the water flow channel, an electric heating component is also arranged inside the heating body, the electric heating component is provided with a wiring terminal, and the water inlet is farther away from the wiring terminal than the water outlet;

[0010] A water inlet pipe, both ends of which are connected to the water inlet and the water inlet joint respectively;

[0011] A water outlet pipe, two ends of which are respectively connected to the water outlet and the water outlet joint.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are as follows: by setting an outer shell, a heating body, a water inlet pipe and a water outlet pipe, the outer shell is provided with a water inlet joint and a water outlet joint, the heating body is provided with a water inlet and a water outlet, a water flow channel is formed inside the heating body, the water flow channel is connected with the water inlet and the water outlet respectively, an electric heating component is provided inside the heating body, the electric heating component is provided with a wiring terminal, the water inlet is farther away from the wiring terminal than the water outlet, the water inlet pipe connects the water inlet and the water inlet joint, the water outlet pipe connects the water outlet and the water outlet joint, so that the cold water coming in from the water inlet joint enters the water inlet, the heating body on the water inlet side is farther away from the wiring terminal and has a higher temperature, so the water in the water flow channel can be quickly heated, the heating body on the water outlet side is closer to the wiring terminal and has a lower temperature, so when the water supply is cut off, the water temperature on the water outlet side can be lowered, thereby reducing the probability of the user being scalded when using water again.

[0013] In some embodiments of the present application, the water flow channel includes:

[0014] a first conduit, the first conduit being close to a side wall of the housing;

[0015] a second pipe, the second pipe being close to the terminal;

[0016] a third pipeline, the third pipeline is circuitous and connected between the first pipeline and the second pipeline;

[0017] Wherein, the connection terminal is arranged on one side of the heating body and away from the side wall of the shell.

[0018] By placing the first pipe close to the side wall of the shell, the second pipe close to the terminal, and the third pipe connecting the first pipe and the second pipe in a circuitous manner, the flow path of the water flow can be extended, so that the water in the water flow channel can fully exchange heat with the heating body, which is beneficial to improving the heat exchange efficiency.

[0019] In some embodiments of the present application, both the first pipe and the second pipe extend along the height direction of the shell.

[0020] By extending both the first pipe and the second pipe in the height direction of the shell so that the first pipe and the second pipe are parallel, the structure of the water flow channel can be made more regular, which facilitates the arrangement of the water flow channel in the heating body.

[0021] In some embodiments of the present application, the water inlet pipe and the water outlet pipe are arranged crosswise;

[0022] And / or, the water inlet pipe and the water outlet pipe are hoses or corrugated pipes.

[0023] By arranging the water inlet pipe and the water outlet pipe in a cross manner, it is convenient for the water inlet pipe to connect to the water inlet and the water inlet joint, and for the water outlet pipe to connect to the water outlet and the water outlet joint, thereby shortening the length of the water inlet pipe and the water outlet pipe and reducing the cost.

[0024] In some embodiments of the present application, the electric water heater further comprises:

[0025] An electric control box, wherein the electric control box and the heating body are arranged side by side in the housing, and the connection terminals are arranged adjacent to the electric control box.

[0026] By setting up an electric control box, the electric control box and the heating body are arranged side by side in the shell, and the wiring terminals are arranged adjacent to the electric control box, so that the distance between the wiring terminals and the electric control box is shorter, which is convenient for wiring.

[0027] In some embodiments of the present application, a mounting hole is formed on the housing, and the electric water heater further comprises:

[0028] A wire sheath structure is provided on the mounting hole, and at least part of the wire harness of the electric water heater enters the housing through the wire sheath structure and is electrically connected to the electric control box.

[0029] By providing the wire protection cover structure, the wire protection cover structure can protect the wire harness from damage and has a waterproof effect.

[0030] In some embodiments of the present application, the electric water heater further comprises:

[0031] A bypass pipe, one end of which is connected to the water inlet and the water inlet pipe, and the other end of which is connected to the water outlet and the water outlet pipe.

[0032] By setting a bypass pipe, one end of the bypass pipe is connected to the water inlet and the water inlet pipe, and the other end of the bypass pipe is connected to the water outlet and the water outlet pipe. The bypass pipe is connected to the water flow channel through the water inlet and the water outlet. When the electric water heater is turned off or the power is turned off, the hot water in the water flow channel can flow back into the bypass pipe and mix with the cold water at the water inlet of the heating body, thereby lowering the water temperature and reducing the risk of scalding users.

[0033] In some embodiments of the present application, the electric water heater further comprises:

[0034] The switch valve is arranged on the bypass pipe and is configured to control the opening and closing of the bypass pipe.

[0035] By arranging a switch valve on the bypass pipe, the on-off of the bypass pipe can be easily controlled by the switch valve.

[0036] In some embodiments of the present application, the electric water heater further comprises:

[0037] A water servo is provided at the connection between the bypass pipe, the water outlet and the water outlet pipe, and is configured to control the water flow of the bypass pipe and the water outlet respectively.

[0038] By setting a water servo, the water servo is set at the connection between the bypass pipe, the water outlet and the water outlet pipe. The water servo is used to control the water flow of the bypass pipe and the water outlet respectively, so as to facilitate the control of the water temperature in the water outlet pipe.

[0039] In some embodiments of the present application, the electric water heater further comprises:

[0040] The outlet water temperature sensor is disposed on the outlet water pipe and is configured to detect the water temperature in the outlet water pipe.

[0041] By arranging a water outlet temperature sensor on the water outlet pipe, it is convenient to detect the temperature of the water in the water outlet pipe in real time, thereby controlling the water outlet temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 A schematic structural diagram of an embodiment of the electric water heater provided by the utility model;

[0044] Figure 2 A partial structural schematic diagram of another embodiment of the electric water heater provided by the utility model;

[0045] Figure 3 A partial structural schematic diagram of another embodiment of the electric water heater provided by the utility model;

[0046] Figure 4A partial structural schematic diagram of another embodiment of the electric water heater provided by the utility model;

[0047] Figure 5 A structural schematic diagram of an embodiment of the wire protection sleeve structure provided by the utility model;

[0048] Figure 6 A structural schematic diagram of another embodiment of the wire protection sleeve structure provided by the utility model;

[0049] Figure 7 A front view of another embodiment of the wire protection sleeve structure provided by the utility model;

[0050] Figure 8 for Figure 7 Cross-section along AA direction.

[0051] Description of reference numerals:

[0052] 1. Shell; 11. Water inlet joint; 12. Water outlet joint;

[0053] 2. Heating body; 21. Water inlet; 22. Water outlet; 23. Wiring terminal; 24. Water flow channel; 241. First pipeline; 242. Second pipeline; 243. Third pipeline;

[0054] 3. Water inlet pipe;

[0055] 4. Water outlet pipe;

[0056] 5. Bypass pipe; 51. Switch valve;

[0057] 6. Electric control box;

[0058] 7. Water server;

[0059] 8. Water outlet temperature sensor;

[0060] 9. Wire protection sleeve structure; 91. Base; 911. Through hole; 92. Sleeve; 93. Mounting portion; 931. Assembly groove; 932. First flange; 933. Second flange. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0062] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0065] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0066] Combination Figures 1 to 4 As shown, the utility model provides an electric water heater, which includes a shell 1, a heating body 2, a water inlet pipe 3 and a water outlet pipe 4.

[0067] The housing 1 is in a rectangular shape, and a water inlet connector 11 and a water outlet connector 12 are provided at the bottom of the housing 1, wherein the water inlet connector 11 is located on the right side of the water outlet connector 12, the water inlet connector 11 is connected to the water supply end through an external pipe, and the water outlet connector 12 is connected to the hot water end through an external pipe, and the hot water end can be a shower head in a bathroom, a faucet in a kitchen or a sink, etc. In order to facilitate processing and reduce costs, the housing 1 is made of plastic material.

[0068] The heating body 2 is arranged in the housing 1, and a water inlet 21 and a water outlet 22 are provided at the bottom end of the heating body 2. A water flow channel 24 is formed inside the heating body 2, and the water inlet 21 and the water outlet 22 are respectively connected to the two ends of the water flow channel 24. An electric heating component is also arranged inside the heating body 2, and a wiring terminal 23 is provided on one side of the electric heating component. The wiring terminal 23 is electrically connected to the electric heating component, and the water inlet 21 is farther away from the wiring terminal 23 than the water outlet 22.

[0069] Specifically, the heating body 2 plays a role in transferring heat, and is mainly made of metal materials. For example, the heating body 2 is made of cast aluminum material.

[0070] The water inlet pipe 3 is located in the housing 1, and the two ends of the water inlet pipe 3 are respectively connected to the water inlet 21 and the water inlet connector 11;

[0071] The water outlet pipe 4 is located in the housing 1, and the two ends of the water outlet pipe 4 are respectively connected to the water outlet 22 and the water outlet connector 12;

[0072] The water inlet pipe 3 and the water outlet pipe 4 are arranged crosswise.

[0073] Specifically, by setting the shell 1, the heating body 2, the water inlet pipe 3 and the water outlet pipe 4, the bottom end of the shell 1 is provided with a water inlet joint 11 and a water outlet joint 12, the heating body 2 is provided with a water inlet 21 and a water outlet 22, the heating body 2 is formed with a water flow channel 24, the water flow channel 24 is connected with the water inlet 21 and the water outlet 22 respectively, the heating body 2 is provided with an electric heating component, one side of the electric heating component is provided with a wiring terminal 23, the water inlet 21 is farther away from the wiring terminal 23 than the water outlet 22 The water inlet pipe 3 is connected to the water inlet 21 and the water inlet joint 11, and the water outlet pipe 4 is connected to the water outlet 22 and the water outlet joint 12, so that the cold water coming in from the water inlet joint 11 enters the water inlet 21, and the heating body 2 on the side of the water inlet 21 is far away from the wiring terminal 23 and has a higher temperature, which can quickly heat the water in the water flow channel 24. The heating body 2 on the side of the water outlet 22 is close to the wiring terminal 23 and has a lower temperature. When the water supply is cut off, the water temperature on the side of the water outlet 22 can be lowered, reducing the probability of the user being scalded when using water again.

[0074] Specifically, the electric heating component is U-shaped.

[0075] Exemplarily, the distances between the two sides of each electric heating component are different, so that the electric heating components are arranged in a manner of one U-shaped rod surrounding another U-shaped rod, and the span of the electric heating components is larger.

[0076] Of course, multiple electric heating components can also be arranged side by side.

[0077] In some embodiments of the present application, the water flow channel includes a first pipe 241 , a second pipe 242 and a third pipe 243 .

[0078] The first pipe 241 is close to the side wall of the housing; the second pipe 242 is close to the terminal; the third pipe 243 is in a circuitous shape and is connected between the first pipe 241 and the second pipe 242;

[0079] The connecting terminal is arranged on one side of the heating body and away from the side wall of the shell.

[0080] By placing the first pipe 241 close to the side wall of the shell, the second pipe 242 close to the wiring terminal, and the third pipe 243 connecting the first pipe 241 and the second pipe 242 in a circuitous manner, the flow path of the water flow can be extended, so that the water in the water flow channel can fully exchange heat with the heating body, which is beneficial to improving the heat exchange efficiency; the wiring terminal is arranged on one side of the heating body and away from the side wall of the shell, so that the temperature of the second pipe 242 close to the wiring terminal is lower than the temperature of the first pipe 241, and when the water is turned off, the water temperature can be prevented from being too high.

[0081] Exemplarily, the water flow channel 24 can be formed by a metal pipe, which can be an aluminum pipe or a copper pipe. Of course, the metal pipe includes but is not limited to the above two types; during molding, the metal aluminum material is poured on the outside of the metal pipe and the electric heating component to form the heating body 2, so that the heating body 2 is covered on the outside of the metal pipe and the electric heating component, that is, the metal pipe and the electric heating component are embedded in the interior of the heating body 2.

[0082] In some embodiments of the present application, the electric heating component is embedded in the interior of the heating body 2 .

[0083] Specifically, by embedding the electric heating component inside the heating body 2, on the one hand, the overall structure can be made more compact and the space occupied by the heating body 2 can be reduced; on the other hand, the electric heating component can directly contact the heating body 2 and heat the heating body 2, so that the heat transfer area is large, the heat transfer rate is higher, and the heat transfer effect is good.

[0084] In some embodiments of the present application, the connection terminals 23 are arranged in a row in the middle of the housing 1 .

[0085] Specifically, by providing the connection terminal 23, the connection terminal 23 facilitates the connection of the electric heating component to the circuit. By arranging the connection terminal 23 in a row in the middle of the housing 1, it is convenient to connect the electric heating component to the circuit, thereby improving the regularity of the circuit.

[0086] In some embodiments of the present application, both the first pipe 241 and the second pipe 242 extend along the height direction of the housing 1 .

[0087] Specifically, by extending the first pipe 241 and the second pipe 242 along the height direction of the shell 1 so that the first pipe 241 and the second pipe 242 are parallel, the structure of the water flow channel 24 can be more regular, which facilitates the arrangement of the water flow channel 24 in the heating body 2.

[0088] In some other embodiments of the present application, the water inlet pipe 3 and the water outlet pipe 4 are arranged crosswise;

[0089] And / or, the water inlet pipe 3 and the water outlet pipe 4 are hoses or corrugated pipes.

[0090] Specifically, by arranging the water inlet pipe 3 and the water outlet pipe 4 crosswise, it is convenient for the water inlet pipe 3 to connect to the water inlet 21 and the water inlet joint 11, and for the water outlet pipe 4 to connect to the water outlet 22 and the water outlet joint 12, thereby shortening the length of the water inlet pipe 3 and the water outlet pipe 4 and reducing the cost; the water inlet pipe 3 and the water outlet pipe 4 are soft or corrugated pipes to facilitate the installation and maintenance of the water inlet pipe 3 and the water outlet pipe 4.

[0091] In some embodiments of the present application, the electric water heater further includes an electric control box 6 .

[0092] The electric control box 6 and the heating body 2 are arranged side by side in the housing 1 , and the connection terminal 23 is arranged adjacent to the electric control box 6 .

[0093] Specifically, by setting the electric control box 6, the electric control box 6 and the heating body 2 are arranged side by side in the shell 1, and the wiring terminal 23 is arranged adjacent to the electric control box 6, so that the distance between the wiring terminal 23 and the electric control box 6 is shorter, which is convenient for wiring and makes the internal circuit neater.

[0094] In certain embodiments of the present application, a mounting hole is formed on the housing 1 , and the electric water heater further includes a wire protection sleeve structure 9 .

[0095] The wire sheath structure 9 is arranged on the mounting hole, and at least part of the wire harness of the electric water heater enters the housing 1 through the wire sheath structure 9 and is electrically connected to the electric control box 6 .

[0096] Specifically, by setting a wire sheath structure 9, the wire sheath structure 9 is set in the mounting hole on the outer shell 1, at least part of the wiring harness of the electric water heater enters the outer shell 1 through the wire sheath structure 9 and is electrically connected to the electric control box 6, the wire sheath structure 9 can allow the wire harness to pass through and protect the wire harness from damage, and the wire sheath structure 9 can prevent water from entering the outer shell 1.

[0097] In another aspect, combined Figures 5 to 8 As shown, the wire sheath structure 9 includes a base 91 and a sleeve 92 .

[0098] The base 91 is a three-dimensional structure, specifically, the base 91 is cylindrical, cubic or polygonal, etc. Of course, the shape of the base 91 includes but is not limited to the above forms. A through hole 911 is formed on the end surface of the base 91.

[0099] Specifically, the base 91 may be a solid structure or a hollow structure, and the specific situation can be set according to actual needs.

[0100] Combination Figure 5 and Figure 6 As shown, the sleeve 92 is disposed on the end surface of the base 91 and extends in a direction away from the base 91. The sleeve 92 is connected to the through hole 911. The sleeve 92 is configured to allow the power harness to pass through and abut against the outer wall surface of the power harness.

[0101] Specifically, the sleeve 92 and the base 91 may be an integrally formed structure, or may be fixedly connected by bonding.

[0102] Specifically, the inner diameter of the portion where the sleeve 92 and the base 91 are connected is equal to the diameter of the through hole 911 , or the inner diameter of the portion where the sleeve 92 and the base 91 are connected is slightly larger than the diameter of the through hole 911 .

[0103] In some embodiments of the present application, the sleeve 92 is elastic in the radial direction.

[0104] Specifically, by setting a through hole 911 on the end face of the base 91 and setting a sleeve 92 at a position corresponding to the through hole 911, when the power harness is installed, the power harness can pass through the through hole 911 and the sleeve 92. Since the inner wall surface of the sleeve 92 is in contact with the outer wall surface of the power harness and the sleeve 92 is elastic in the radial direction, the sealing effect between the sleeve 92 and the power harness can be improved, thereby achieving a waterproof effect.

[0105] Specifically, the sleeve 92 is used for the power harness to pass through, and is in contact with the outer wall of the power harness, so that the sleeve 92 is tightly attached to the outer side of the power harness, wrapping the power harness, which can not only achieve the effect of sealing and waterproofing, but also protect the power harness from being pinched and damaged; the wire protection sleeve structure 9 of the present application is relatively simple, convenient for production and installation, and conducive to cost saving.

[0106] In certain embodiments of the present application, Figure 7 and Figure 8 As shown, the sleeve 92 is contracted in a direction away from the base 91 .

[0107] Specifically, by tightening the sleeve 92 in the direction away from the base 91, the inner diameter of the sleeve 92 gradually decreases in the direction away from the base 91, which makes it easy for people to cut the sleeve 92 according to the thickness of the power harness, so that the aperture of the free end of the sleeve 92 can match power harnesses of different thicknesses, thereby expanding the scope of application.

[0108] At the same time, the sleeve 92 is tightened in the direction away from the base 91, and the bottom end of the inner wall of the sleeve 92 tends to be tilted downward. When water is splashed on the inner wall of the sleeve 92 or water droplets are attached, it is convenient for the water to flow out from the inner wall of the sleeve 92 to prevent water from entering the housing 1.

[0109] Specifically, the inner hole of the sleeve 92 may be circular, square or polygonal, and may be set according to actual needs.

[0110] In some embodiments of the present application, Figure 8 As shown, the inner hole of the sleeve 92 is stepped.

[0111] Specifically, by setting the inner hole of the sleeve 92 to be stepped, that is, holes of different diameters are provided on the same sleeve 92, when power wire harnesses of different thicknesses are introduced, the excess parts are cut off according to the corresponding aperture steps, so that the power wire harnesses of different thicknesses can achieve a sealed and waterproof effect after introduction; in addition, the inner hole of the sleeve 92 is stepped, which is convenient for processing and manufacturing, and is convenient for precise cutting according to the thickness of the power wire harness when used.

[0112] Exemplarily, the inner hole of the sleeve 92 is a three-step hole.

[0113] In some embodiments of the present application, the end of the sleeve 92 facing away from the base 91 is a closed structure.

[0114] Specifically, the closed end of the sleeve 92 can be cut according to actual needs so that the sleeve 92 is in contact with the outer wall of the power wiring harness. By setting the end of the sleeve 92 facing away from the base 91 to a closed structure, when multiple sleeves 92 are provided on the base 91, when the actual number of power wiring harnesses is greater than the number of sleeves 92, the sleeve 92 without the power wiring harness installed is in a closed state, and water cannot enter the interior through the sleeve 92, which is beneficial to maintaining the sealing and waterproof effect of the wire protection sleeve structure 9.

[0115] In some embodiments of the present application, the sleeve 92 is made of elastic material, and the elastic material includes but is not limited to rubber.

[0116] Specifically, the sleeve 92 is made of an elastic material, which has good elasticity, so that power wire harnesses of different specifications and thicknesses can pass through the sleeve 92 and match with the sleeve 92 .

[0117] Exemplarily, the sleeve 92 is made of one or more of fluororubber, natural rubber, silicone rubber, nitrile rubber or styrene-butadiene rubber.

[0118] In some embodiments of the present application, the sleeves 92 correspond to the through holes 911 one by one.

[0119] In other embodiments of the present application, one or more sleeves 92 are provided.

[0120] Exemplarily, the sleeves 92 are provided with 2, 3, 4, 5 or 6. Of course, the number of power harness barrels includes but is not limited to the above number. The specific number can be set according to actual needs. Multiple sleeves 92 are evenly distributed on the base 91.

[0121] In actual installation and use, the number of power wiring harnesses installed in the power line with the same wire protection sleeve structure 9 may be different, and the thickness of each power wiring harness of the same power line may be different. The sleeves 92 on the base 91 can be cut according to the thickness of the corresponding power wiring harness, and the corresponding structure can be removed so that the sleeve 92 can be adapted to each power wiring harness of different thicknesses, so that multiple power wiring harnesses of different numbers and thicknesses are sealed with the adapted sleeves 92 after entering the line, thereby achieving a waterproof effect, and adjacent power wiring harnesses do not affect each other.

[0122] In this way, there is no need to add additional accessories and space, the structure is exquisite, beautiful, and well concealed, which is conducive to cost saving.

[0123] In some embodiments of the present application, Figure 5 As shown, the base 91 is a cylindrical structure with one end open, and the through hole 911 is located on the bottom wall of the base 91 .

[0124] Specifically, by setting the base 91 as a cylindrical structure with one end open, the cylindrical structure can not only save materials and reduce the overall weight; at the same time, the cylindrical structure is easy to deform, which facilitates the installation of the base 91; in addition, the sealing effect between the base 91 and the installation hole to be installed is improved.

[0125] During actual installation and use, the open end of the base 91 faces the outside of the shell 1, and the sleeve 92 is located inside the shell 1. In this way, the appearance is relatively flat and beautiful. At the same time, the sleeve 92 is located inside the shell 1 to avoid the sleeve 92 hindering the installation due to occupying space.

[0126] In some embodiments of the present application, the wire protection sleeve structure 9 further includes a mounting portion 93 .

[0127] The mounting portion 93 is disposed on the outer side wall of the base 91 , and the mounting portion 93 is configured to be used for mounting the cable sheath structure 9 .

[0128] Specifically, by providing a mounting portion 93 on the outer side wall of the base 91 , the mounting portion 93 facilitates fixing the wire protection sleeve structure 9 to the housing 1 of the electric water heater.

[0129] In some embodiments of the present application, the mounting portion 93 includes a mounting groove 931 formed on an outer wall surface of the base 91 .

[0130] Specifically, by forming an assembly groove 931 on the outer wall surface of the base 91, the base 91 can be clamped on the installation hole of the housing 1 of the electric water heater through the assembly groove 931, which is convenient for installation.

[0131] In some embodiments of the present application, Figure 8 As shown, the cable sheath structure 9 further includes a first flange 932 and a second flange 933 .

[0132] The first flange 932 is disposed on the outer wall surface of the opening end of the base 91;

[0133] The second flange 933 is arranged on the outer wall surface of the bottom end surface of the base 91 . The second flange 933 and the first flange 932 are arranged at intervals. The second flange 933 , the first flange 932 and the outer wall surface of the base 91 together enclose a mounting groove 931 .

[0134] In some embodiments of the present application, the mounting portion 93 includes a fixing plate.

[0135] The fixing plate is arranged on the outer wall surface of the base 91, and fixing holes are arranged on the fixing plate.

[0136] Specifically, by arranging a fixing plate on the outer wall surface of the base 91, the fixing plate is provided with fixing holes, so that the base 91 can be fixedly installed on the housing 1 of the electric water heater.

[0137] Combination Figure 1 As shown, in some embodiments of the present application, the electric water heater further includes a bypass pipe 5 .

[0138] One end of the bypass pipe 5 is connected to the water inlet 21 and the water inlet pipe 3 through a three-way joint, and the other end of the bypass pipe 5 is connected to the water outlet 22 and the water outlet pipe 4.

[0139] Specifically, by setting a bypass pipe 5, one end of the bypass pipe 5 is connected to the water inlet 21 and the water inlet pipe 3 through a three-way joint, and the other end of the bypass pipe 5 is connected to the water outlet 22 and the water outlet pipe 4. The bypass pipe 5 is connected to the water flow channel 24 through the water inlet 21 and the water outlet 22. When the electric water heater is turned off or shut down, the hot water in the water flow channel 24 can flow back into the bypass pipe 5 and mix with the cold water at the water inlet 21 of the heating body 2, thereby lowering the water temperature and reducing the risk of scalding the user.

[0140] At the same time, when the user uses water again, cold water passes through the water inlet joint 11 and the water inlet pipe 3 and can flow into the water outlet pipe 4 through the bypass pipe 5, and mixes with the high-temperature water in the water outlet pipe 4, thereby reducing the water temperature in the water outlet pipe 4.

[0141] In some embodiments of the present application, the electric water heater further includes a switch valve 51 .

[0142] The on-off valve 51 is provided on the bypass pipe 5 , and the on-off valve 51 is configured to control the opening and closing of the bypass pipe 5 .

[0143] Specifically, by arranging a switch valve 51 on the bypass pipe 5, the on-off of the bypass pipe 5 can be easily controlled by the switch valve 51, thereby controlling the flow direction of the water flow.

[0144] In some embodiments of the present application, the switch valve 51 includes a solenoid valve.

[0145] Specifically, the opening and closing of the bypass pipe 5 can be controlled by providing a solenoid valve.

[0146] A solenoid valve is a valve that uses electromagnetic principles to control the movement of a fluid system. Its core components include a coil, a valve core, and a valve body.

[0147] The working principle of the solenoid valve is based on the phenomenon of electromagnetic induction. When current passes through the electromagnetic coil, a magnetic field is generated around the coil. This magnetic field can attract or push the physical valve core, thereby changing the fluid flow path in the valve body.

[0148] Specifically: when the power is on, the electromagnetic force generated by the solenoid coil will lift the valve core from the valve seat, thereby opening the valve. At this time, the fluid in the valve can pass through the solenoid valve; when the power is off, the electromagnetic force disappears, the valve core is pressed back to the valve seat by the spring force, and the valve is closed.

[0149] In some embodiments of the present application, the electric water heater further includes a water server 7 .

[0150] The water servo 7 is disposed at the connection between the bypass pipe 5 , the water outlet 22 and the water outlet pipe 4 , and the water servo 7 is configured to control the water flow of the bypass pipe 5 and the water outlet 22 respectively.

[0151] Specifically, by setting up the water server 7, the water server 7 is set at the connection between the bypass pipe 5, the water outlet 22 and the water outlet pipe 4. The water server 7 can control the water flow of the bypass pipe 5 and the water outlet 22 respectively, so as to facilitate the control of the water temperature in the water outlet pipe 4 and reduce the risk of scalding the user.

[0152] In some embodiments of the present application, the electric water heater further includes a water outlet temperature sensor 8 .

[0153] The outlet water temperature sensor 8 is disposed on the outlet water pipe 4 , and the outlet water temperature sensor 8 is configured to detect the water temperature in the outlet water pipe 4 .

[0154] Specifically, by arranging the outlet water temperature sensor 8 on the outlet water pipe 4, it is convenient to detect the temperature of the water in the outlet water pipe 4 in real time, thereby controlling the outlet water temperature.

[0155] In some other embodiments of the present application, the electric water heater further includes a water inlet temperature sensor.

[0156] The water inlet temperature sensor is disposed on the water inlet pipe 3 , and is configured to detect the water temperature in the water inlet pipe 3 .

[0157] It should be noted that, in order to make the cold water from the bypass pipe 5 and the hot water from the water outlet 22 mix more evenly, the outlet water temperature sensor 8 is spaced a distance from the water server 7 .

[0158] In some embodiments of the present application, the electric water heater further includes a controller.

[0159] The electric heating component is electrically connected to the controller.

[0160] Specifically, by providing a controller, the controller is electrically connected to the electric heating component, and the controller can control the temperature of the water in the water flow channel 24 by controlling the electric heating component.

[0161] Combination Figure 2 As shown, when the electric water heater is used for normal heating, the controller controls the switch valve 51 to be in a closed state, and the flow direction of the water is as shown in FIG. Figure 2 In the direction indicated by the middle arrow, the controller adjusts the water temperature of the outlet water by controlling the water servo 7 to adjust the water flow at the bypass pipe 5 and the water outlet 22 so as to keep the water temperature at a suitable temperature.

[0162] Combination Figure 3 As shown, when the electric water heater is turned off or shut down, the switch valve 51 is in an open state. Due to the temperature difference between the water temperature inside and outside the water flow channel 24, the water at the water outlet 22 flows back through the bypass pipe 5, which can reduce the water temperature to a certain extent. Figure 3 The direction indicated by the middle arrow is the direction of water return.

[0163] Combination Figure 4As shown, when the electric water heater is heating water again, the switch valve 51 is closed for a certain period of time with a delay, so that the cold water in the water inlet pipe 3 can be input into the water outlet pipe 4 through the bypass pipe 5 and mixed with the hot water from the water outlet 22, which can prevent the water temperature at the hot water end from being too high and scalding the user. At the same time, the switch valve 51 will be opened after being closed for a certain period of time with a delay, so that the water temperature measured by the water outlet temperature sensor 8 can be prevented from being a mixture of the high-temperature hot water in the water flow channel 24 and the bypass pipe 5, thereby avoiding the temperature of the heating body 2 from being too high, causing damage to the heating body, and at the same time, preventing the surface temperature of the heating body 2 from being too high and scalding the outer shell 1.

[0164] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0165] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. An electric water heater, characterized in that: include: A housing, wherein the housing is provided with a water inlet joint and a water outlet joint; A heating body, the heating body is arranged in the shell, the heating body is provided with a water inlet and a water outlet, a water flow channel is formed inside the heating body, the water inlet and the water outlet are respectively connected to two ends of the water flow channel, an electric heating component is also arranged inside the heating body, the electric heating component is provided with a wiring terminal, and the water inlet is farther away from the wiring terminal than the water outlet; A water inlet pipe, both ends of which are connected to the water inlet and the water inlet joint respectively; A water outlet pipe, two ends of which are respectively connected to the water outlet and the water outlet joint.

2. The electric water heater according to claim 1, characterized in that: The water flow channel comprises: a first conduit, the first conduit being close to a side wall of the housing; a second pipe, the second pipe being close to the terminal; a third pipeline, the third pipeline is circuitous and connected between the first pipeline and the second pipeline; Wherein, the connection terminal is arranged on one side of the heating body and away from the side wall of the shell.

3. The electric water heater according to claim 2, characterized in that: The first pipe and the second pipe both extend along a height direction of the housing.

4. The electric water heater according to claim 1, characterized in that: The water inlet pipe and the water outlet pipe are arranged crosswise; And / or, the water inlet pipe and the water outlet pipe are hoses or corrugated pipes.

5. The electric water heater according to claim 1, characterized in that: The electric water heater also includes: An electric control box, wherein the electric control box and the heating body are arranged side by side in the housing, and the connection terminals are arranged adjacent to the electric control box.

6. The electric water heater according to claim 5, characterized in that: The housing is provided with a mounting hole, and the electric water heater further comprises: A wire sheath structure is provided on the mounting hole, and at least part of the wire harness of the electric water heater enters the housing through the wire sheath structure and is electrically connected to the electric control box.

7. The electric water heater according to claim 1, characterized in that: The electric water heater also includes: A bypass pipe, one end of which is connected to the water inlet and the water inlet pipe, and the other end of which is connected to the water outlet and the water outlet pipe.

8. The electric water heater according to claim 7, characterized in that: The electric water heater also includes: The switch valve is arranged on the bypass pipe and is configured to control the opening and closing of the bypass pipe.

9. The electric water heater according to claim 7, characterized in that: The electric water heater also includes: A water servo is provided at a connection between the bypass pipe, the water outlet and the water outlet pipe, and is configured to control water flow rates of the bypass pipe and the water outlet, respectively.

10. The electric water heater according to claim 1, characterized in that: The electric water heater also includes: The outlet water temperature sensor is disposed on the outlet water pipe and is configured to detect the water temperature in the outlet water pipe.

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