Instant electric water heater

Abstract

The invention relates to an instant electric water heater which comprises a shell and a heating container, the heating container is arranged in the shell, and a heating cavity is formed in the heating container; the heating element is arranged on the heating container and is configured to electrically heat water in the heating cavity; wherein a water outlet connecting pipe and a water inlet connecting pipe are arranged on the heating container; the part, extending into the heating cavity, of the water outlet connecting pipe extends to the upper portion of the heating container, and a water inlet end opening is formed in an upper pipe opening of the water outlet connecting pipe. The water inlet connecting pipe is transversely arranged at the bottom of the heating container; in addition, a water retaining part is further arranged on the inner wall of the heating cavity, and the water retaining part is arranged in the water outlet port and is configured to enable water flow in the water inlet connecting pipe to flow into the heating cavity in an accelerated mode. The waste heat temperature rise influence of the instant electric water heater is reduced, so that the use experience of a user is improved.

Description

Technical Field

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

[0002] Water heaters are household appliances commonly used in people's daily lives. Among them, electric water heaters can be divided into storage type electric water heaters and instant electric water heaters according to the heating power.

[0003] Instant electric water heaters are widely used because they can deliver hot water directly to users without waiting. Chinese Patent Publication No. CN202675630U discloses an instant electric water heater heating cup, which includes a cup lower cover, a cup body, and a cup upper cover, forming a sealed space. The cup body has a water inlet at its lower portion, the cup upper cover has a water outlet connected to a water outlet pipe, an electric heating rod is installed in the cup body, and the cup upper cover is equipped with a first thermostat for monitoring the temperature of water in the water outlet pipe, the first thermostat being electrically connected to the electric heating rod.

[0004] However, in actual use, when the water is not used, the residual heat of the electric heating rod continues to heat the water in the cup. Due to the low specific gravity of hot water, the water at the top of the cup is too hot. When the user uses water again, the water is overheated for a long time, which reduces the user experience. In view of this, how to design a technology to reduce the impact of residual heat temperature rise and improve the user experience is the technical problem to be solved by this invention. Summary of the Invention

[0005] The object of the present invention is to provide an instant electric water heater, which can reduce the impact of waste heat temperature rise of the instant electric water heater and improve user experience.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: The present invention provides an instant electric water heater, comprising: shell; a heating container, the heating container being disposed in the shell and having a heating cavity formed therein; a heating element, the heating element being disposed on the heating container and configured to electrically heat the water in the heating chamber; The heating container is provided with a water outlet pipe and a water inlet pipe; the portion of the water outlet pipe extending into the heating chamber extends to the upper part of the heating container, and the upper pipe opening of the water outlet pipe forms a water inlet port; the water inlet pipe is arranged horizontally at the bottom of the heating container; In addition, a water retaining portion is provided on the inner wall of the heating chamber. The water retaining portion is arranged in the water outlet port and is configured to accelerate the water flow in the water inlet pipe to flow into the heating chamber.

[0007] In some embodiments of the present application, the water outlet pipe is arranged at the bottom of the heating container, and the water outlet pipe extends from the bottom of the heating chamber into the heating chamber and extends to the upper part of the heating container; The water inlet pipe is arranged on the side of the heating container, and the water outlet port is inclined to one side of the water outlet pipe and is arranged close to the front or rear of the heating container.

[0008] In some embodiments of the present application, the water retaining portion shields a portion of the water outlet port, and the water retaining portion is further provided with an extension portion, the extension portion being arranged sideways and extending into the water inlet pipe, a gap being formed between the extension portion and an inner tube wall of the water inlet pipe, and the gap being configured to guide water in the water inlet pipe to flow from a first direction toward a second direction; The first direction is the length direction of the water inlet pipe, the second direction is staggered with the first direction, and the second direction is transversely arranged along the inner wall of the heating chamber.

[0009] In some embodiments of the present application, a mounting opening is formed on the heating container; The heating element includes a heating portion and a connecting portion, wherein the heating portion extends into the heating chamber and is used to heat water in the heating chamber, and the heating portion is connected to the connecting portion; the connecting portion is slidably disposed in the mounting opening and is sealed to the mounting opening; The instant electric water heater further includes a driving assembly configured to drive the connecting portion to move up and down along the installation opening.

[0010] In some embodiments of the present application, the heating portion has a spiral structure; When the heating unit moves to the lower part of the heating chamber, the heating unit is located on one side of the water outlet port, and the heating unit is further configured to guide the water output from the water outlet port to flow to the upper part of the heating chamber by using a spiral surface formed by a spiral structure; When the heating part moves to the upper part of the heating chamber, the heating part is located above the water outlet port, and the heating part is also configured to block the water flow output from the water outlet port from impacting the water layer in the upper part of the heating chamber.

[0011] In some embodiments of the present application, the heating portion is sleeved on the water outlet pipe.

[0012] In some embodiments of the present application, the heating container includes a body and a cover, the upper portion of the body is an open structure, and the cover is detachably connected to the upper portion of the body; The mounting port is provided on the cover body, and a sleeve portion is formed on the mounting port, and two ends of the sleeve portion extend out of two sides of the cover body respectively, a connecting channel is formed in the sleeve portion, and the connecting portion is connected to the connecting channel; Under the action of the driving assembly, the connecting portion can move up and down in the connecting channel.

[0013] In some embodiments of the present application, a sealing groove is formed on the inner wall of the sleeve portion, a sealing portion is installed in the sealing groove, and the sealing portion is used to seal the gap between the connecting portion and the connecting channel.

[0014] In some embodiments of the present application, the drive assembly includes a motor, a screw and a connecting piece, the connecting piece is provided with a threaded hole, the motor is provided on the housing, the screw is connected to the rotating shaft of the motor, the screw is also threadedly connected in the threaded hole, and the connecting piece is provided on the connecting part.

[0015] In some embodiments of the present application, a water treatment component is further provided in the heating container, which is configured to perform water quality treatment on the water in the heating container.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are: by arranging a water retaining portion at the water outlet port of the water inlet pipe, the water retaining portion blocks the water introduced into the water inlet pipe in the water outlet port to reduce the water outlet area of ​​the water outlet port, thereby accelerating the flow rate of water entering the heating chamber from the water outlet port. In this way, during the use of the instant water heater, when water use is suspended and restarted, the existing hot water in the heating chamber can be stirred by using the rapid water flow at the moment when the water inlet pipe fills the heating chamber, thereby reducing the impact of the residual heat temperature rise of the heating component, thereby improving the user experience.

[0017] In addition, the heating element can be moved up and down in the heating chamber through the driving assembly. During heating, the driving assembly moves the heating element to the upper position of the heating chamber so that the heating element is close to the water inlet port of the water outlet pipe. When the water outlet valve is opened, the heating element heats the surrounding water, and the heated water can directly enter the water outlet pipe from the water inlet port to increase the heating speed; when the heating is completed, the driving assembly moves the heating element to the lower position of the heating chamber so that the heating element is away from the water inlet port of the water outlet pipe to reduce the residual heat temperature rise and avoid the hot water heated by the residual heat of the heating pipe being directly output when the user opens the water outlet valve again, thereby scalding the user. The heating efficiency of the entire electric water heater is higher, more energy-saving, and safer.

[0018] Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the electric water heater proposed by the present invention; Figure 2 It is a schematic diagram of the connection structure between the heating container and the heating element; Figure 3 yes Figure 2 Split diagram; Figure 4 It is one of the schematic diagrams of the heating container structure; Figure 5 is a schematic cross-sectional view of a heating container; Figure 6 This is one of the schematic diagrams of the cover structure; Figure 7 This is the second schematic diagram of the cover structure; Figure 8 It is a schematic diagram of the descaling component structure; Figure 9 This is a schematic diagram of the bypass part and the switch valve; Figure 10 It is a schematic diagram of the connection position of water treatment components; Figure 11 This is the second schematic diagram of the heating container structure.

[0021] In the figure, 100, housing; 200. Heating container; 210, body; 211, connecting protrusion; 212, hanging ear; 220, cover; 221, connecting outer edge; 222, sleeve portion; 223, fixing protrusion; 230, water outlet pipe; 231, water inlet port; 232, water outlet interface; 240, water inlet pipe; 241, water outlet port; 300, drive assembly; 400, heating element; 410, connecting portion; 411, sealing groove portion; 420, heating portion; 500, descaling assembly; 510, handheld portion; 520, descaling fixing portion; 530, descaling body; 600, bypass portion; 610, on-off valve; 611, rotating handle; 612, rotating shaft; 613, valve plate; 700. Water treatment components. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0028] An electric water heater uses electricity as its main energy source. The high-temperature heat generated when powered on directly heats the water stored in the electric water heater to prepare hot water.

[0029] An electric water heater usually consists of a water tank, an electric heating component, and an electric control board. A water storage cavity is formed in the water tank to store the water to be heated. The electric heating component is inserted into the water storage cavity formed by the water tank. The electric control board is used to control the on and off operation of the electric heating component so that the water in the water tank is heated to the set temperature.

[0030] The water tank of an electric water heater generally consists of an outer shell and a heating container, with an insulation layer between the outer shell and the heating container. The outer shell is usually made of plastic to meet the requirements of aesthetic and diverse designs. The heating container can be made of metal or plastic depending on the needs.

[0031] In addition, the insulation layer formed between the shell and the heating container is made of commonly used insulation materials such as asbestos, sponge, foam plastic, polyurethane foam, etc. In conventional technology, in order to obtain a good insulation effect, the insulation layer is usually formed by foaming.

[0032] Among them, for the heating container using a metal body, the interior of the heating container is prone to corrosion due to the influence of water quality. For this reason, a magnesium rod is also configured on the water tank, and the magnesium rod is inserted into the water storage cavity inside the water tank.

[0033] Because magnesium has the lowest potential in the electrochemical series and is physiologically non-toxic, it is ideal for use as a magnesium rod to protect heating containers. The size of the magnesium rod directly affects the duration and effectiveness of the protective effect. The larger the rod, the better the protection and the longer it lasts.

[0034] The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to deliver cold water to the water storage cavity formed in the water tank, while the hot water in the water storage cavity is output from the water outlet pipe.

[0035] For the electric heating component, electric heating methods such as electric heating wire, magnetic energy or silicon tube heating can be used to heat the water stored in the water storage cavity.

[0036] As for the electric control board, it is used to receive detection signals sent by relevant sensors (such as water temperature sensor, flow sensor), and at the same time, control the power on and off operation of the electric heating component.

[0037] When the electric water heater is working, the electric control board controls the electric heating component to be powered on for heating. When the water temperature in the water tank reaches the set value, the electric control board controls the electric heating component to be powered off.

[0038] refer to Figure 1-Figure 3 As shown, the present invention provides an instant electric water heater, which includes a shell 100 and a heating container 200.

[0039] A heating chamber is formed in the heating container 200, and water is stored in the heating chamber. The heating container 200 is a cylindrical structure as a whole. The heating container 200 includes a bile body 210 and a cover body 220. The upper part of the bile body 210 is an open structure, and the cover body 220 is detachably connected to the upper part of the bile body 210.

[0040] The outer surface of the body 210 is composed of a vertical circumferential side surface and a bottom arc surface. The upper part of the outer wall of the heating container 200 is an opening, and the cover 220 is covered on the heating container 200.

[0041] Vertical and transverse outwardly protruding reinforcing ribs are formed on the peripheral side surfaces of the bladder body 210 to improve the structural strength of the bladder body 210 .

[0042] The cover 220 is detachably connected to the tank body 210, which reduces the difficulty of processing and makes it easier to install structures such as the heating element 400 and the water treatment component 700.

[0043] The outer surface of the cover 220 is composed of a mounting plane or a top arc surface.

[0044] Combine Figure 6A connecting outer edge 221 is formed on the peripheral side of the cover body 220, a connecting protrusion 211 is formed on the outer wall of the gallbladder body 210, and a buckle portion is formed on the connecting outer edge 221. The cover body 220 can be detachably connected to the connecting protrusion 211 through the buckle portion.

[0045] The connecting protrusion 211 is a continuous structure or a discontinuous structure provided on the peripheral side of the outer wall of the gallbladder body 210 , and mainly serves to connect with the cover body 220 .

[0046] The cover body 220 and the gallbladder body 210 are connected by snap fasteners, which helps to reduce damage to the gallbladder body 210 and the cover body 220 caused by mechanical connections such as fastening screws, and has better sealing and structural strength, which helps to simplify the assembly process and reduce component processing costs.

[0047] In addition, in some other embodiments, the cover body 220 and the bladder body 210 can also be connected by an interference fit connection method, and the connecting outer edge 221 is connected to the outer side of the connecting protrusion 211 by an interference fit method.

[0048] refer to Figure 4 、 Figure 5 The heating container 200 is externally connected to a water inlet pipe and a water outlet pipe. The water inlet pipe is used to transport external water into the heating chamber, and the water outlet pipe is connected to the user terminal for outputting heated water to user terminals such as shower heads.

[0049] Specifically, a water outlet pipe 230 is formed at the bottom of the heating container 200 , and a water inlet port 231 of the water outlet pipe 230 extends into the heating chamber and is located at an upper position of the heating chamber.

[0050] Since the heated water tank moves upwards in the heating chamber, the water inlet port 231 on the water outlet pipe 230 is located at the upper position of the heating chamber, which is beneficial to increase the water outlet speed of hot water and reduce waiting time.

[0051] Combine Figure 10 The water outlet pipe 230 is formed with a water outlet interface 232 extending out of the heating container 200 for connecting to a water outlet pipe for outputting heated water.

[0052] Reference again Figure 4 、 Figure 5 In some embodiments of the present application, the water inlet pipe is connected to the side wall of the heating container 200. Specifically, a water inlet pipe 240 is formed on the side wall of the heating container 200, and the water inlet pipe 240 extends outward along the side wall of the heating container 200 to facilitate docking with the water inlet pipe.

[0053] The water inlet pipe 240 is communicated with the lower position of the heating chamber, and the water inlet pipe 240 is externally connected to the water inlet pipe for introducing an external water source into the heating chamber.

[0054] The water inlet pipe 240 is connected to the lower position of the heating chamber to prevent the newly input cold water from being directly output to the user end from the water inlet port 231 of the water outlet pipe 230 without being heated, thereby affecting the heating effect.

[0055] The heating element 400 is a main component for heating water in the heating chamber. The heating element 400 includes a heating portion 420 and a connecting portion 410 . The connecting portion 410 mainly serves to connect the heating portion 420 .

[0056] refer to Figure 3 The heating part 420 is specifically a heating tube. The heating part 420 extends into the heating chamber under the action of the connecting part 410 and is used to heat the water in the heating chamber. The heating part 420 is connected to the power supply module through the connecting part 410.

[0057] In one embodiment of the present application, in order to reduce the effect of residual heat temperature rise generated by the heating element 400 during the water suspension process, the following structural improvements are made to the heating container 200. Figure 1 and Figure 11 As shown, a water retaining portion 250 is further provided on the inner wall of the heating chamber.

[0058] Specifically, the part of the water outlet pipe extending into the heating chamber extends to the upper part of the heating container, and the upper pipe mouth of the water outlet pipe forms a water inlet port; the water inlet pipe is arranged horizontally at the bottom of the heating container; the water retaining part is arranged in the water outlet port and is configured to accelerate the water flow in the water inlet pipe to flow into the heating chamber.

[0059] Specifically, when using an instant water heater, there may be a pause in water use. During this pause, although the heating element is powered off, its residual heat will continue to heat the water in the heating container. However, due to the low specific gravity of hot water, the upper layer of water in the heating container will be at a higher temperature. When the user uses water again, superheated water will flow out for a long time, affecting the user experience.

[0060] By providing a water retaining portion 250 on the inner wall of the heating chamber, which blocks the water outlet port of the water inlet pipe, the water retaining portion 250 makes the water outlet cross-sectional area of ​​the water outlet port 241 of the water inlet pipe 240 smaller than the cross-sectional area of ​​the water inlet pipe 240, thereby increasing the flow rate of water output from the water outlet port 241. After water use is suspended and then restarted, the faster water flow entering the heating chamber produces a significant impact, stirring the stratified water in the heating chamber, thereby shortening the time it takes for the superheated water to flow out.

[0061] In one embodiment, the water outlet pipe is arranged at the bottom of the heating container, and the water outlet pipe extends from the bottom of the heating chamber into the heating chamber and extends to the upper part of the heating container; The water inlet pipe is arranged on the side of the heating container, and the water outlet port is inclined to one side of the water outlet pipe and is arranged close to the front or rear of the heating container.

[0062] Specifically, the water outlet pipe 230 extends from the bottom of the heating container 200 into the heating chamber, with the water inlet port 231 of the water outlet pipe 230 located in the upper region of the heating chamber. The water inlet pipe 240 is disposed at the lower portion of the heating container 200, with the water outlet port 241 located obliquely to one side of the water outlet pipe.

[0063] In another embodiment, the water retaining portion blocks a portion of the water outlet port, and the water retaining portion is further provided with an extension portion 251, which is arranged sideways and extends into the water inlet pipe, and a gap is formed between the extension portion and the inner pipe wall of the water inlet pipe, and the gap is configured to guide the water flow in the water inlet pipe from the first direction to the second direction; The first direction is the length direction of the water inlet pipe, the second direction is staggered with the first direction, and the second direction is transversely arranged along the inner wall of the heating chamber.

[0064] Specifically, the extension portion 251 provided on the water retaining portion 250 will be inserted into the interior of the water inlet pipe 240. The gap formed between the extension portion 251 and the inner tube wall of the water inlet pipe will guide the water flow in the water inlet pipe to change direction, thereby better stirring the water in the heating chamber.

[0065] In another embodiment of the present application, in order to actively suppress the temperature rise of the residual heat of the heating element, the following improvements are made to the assembly method between the heating element 400 and the heating container 200.

[0066] like Figures 1-11 As shown, the heating element 400 is also connected to the driving assembly 300, and a mounting opening is formed on the heating container 200. The heating portion 420 is configured to move up and down in the heating chamber along the mounting opening under the action of the driving assembly 300.

[0067] refer to Figure 6 、 Figure 7 Specifically, the mounting port is formed on the cover body 220 , and a sleeve portion 222 is formed on the mounting port. Two ends of the sleeve portion 222 extend from two sides of the cover body 220 respectively.

[0068] A connecting passage is formed in the sleeve portion 222 , and the connecting portion 410 is connected to the connecting passage. Under the action of the driving assembly 300 , the connecting portion 410 can move up and down in the connecting passage.

[0069] The design of the sleeve portion 222 is beneficial for increasing the contact area between the connecting portion 410 on the heating element 400 and the cover body 220, thereby improving the connection strength.

[0070] Combine Figure 1 In order to realize the up and down movement of the heating element 400 relative to the heating container 200, an active inner cavity is formed between the heating container 200 and the outer shell 100, and the driving assembly 300 is fixed in the active inner cavity.

[0071] Specifically, the drive assembly includes a motor 310, a screw rod 320 and a connecting member 330, the connecting member is provided with a threaded hole, the motor is arranged on the housing, the screw rod is connected to the rotating shaft of the motor, the screw rod is also threadedly connected in the threaded hole, and the connecting member is arranged on the connecting part.

[0072] After the driving assembly 300 is turned on, the motor 310 drives the screw rod 320 to rotate, and the threaded connection allows the connecting piece 330 to move up and down along the axis of the screw rod 320, and then the connecting piece 330 can drive the heating part 420 to move up and down in the heating chamber through the connecting part 410.

[0073] Reference again Figure 3 In some embodiments of the present application, at least a portion of the heating portion 420 is spiral-shaped to increase the contact area with the water in the heating chamber and improve the heating efficiency.

[0074] Specifically, the heating part 420 is sleeved on the part of the water outlet pipe 230 extending into the heating chamber. During the heating process, the heating part 420 can heat the water outside the water outlet pipe 230 and further heat the water flowing in the water outlet pipe 230.

[0075] In certain embodiments, based on the configuration of the water retaining portion 250, when water use is suspended, the heating portion 420 moves to the lower part of the heating chamber, and the heating portion 420 is located on one side of the water outlet port 241. The heating portion 420 is also configured to use the spiral surface formed by the spiral structure to guide the water output from the water outlet port 241 to the upper part of the heating chamber; and during water use, the heating portion 420 moves to the upper part of the heating chamber, and the heating portion 420 is located above the water outlet port 241. The heating portion 420 is also configured to block the water flow output from the water outlet port 241 from impacting the water layer in the upper part of the heating chamber.

[0076] Specifically, during use, when water is not used, the heating unit 420 moves to the lower part of the heating chamber to reduce the water temperature at the top of the heating chamber. Furthermore, when water is used again, the water output through the water outlet 241 is guided by the spiral surface of the heating unit 420 and can quickly flow to the upper part of the heating chamber, thereby quickly reducing the hot water at the top of the heating chamber.

[0077] During normal water use, the heating part 420 moves to the top of the water outlet port 241. The impact of the water flow output from the water outlet port 241 on the heating chamber will be blocked by the spiral structure of the heating part 420, thereby reducing the impact on the top hot water layer.

[0078] In some embodiments of the present application, in order to improve the sealing effect of the heating container 200, at least one sealing groove 411 is formed on the inner wall of the sleeve portion 222 along the axial direction of the sleeve portion 222, and a sealing portion is installed in the sealing groove 411, and the sealing portion is used to seal the gap between the connecting portion 410 and the connecting channel.

[0079] Another sealing method is: at least one sealing groove 411 is provided on the outer wall of the connecting part 410 along the length direction of the connecting part 410, and the sealing member is connected to the connecting part 410. When the connecting part 410 moves up and down relative to the sleeve part 222, the sealing member also moves up and down relative to the inner wall of the sleeve part 222.

[0080] During the up and down movement of the connecting portion 410 relative to the sleeve portion 222, the sealing portion is always located between the connecting portion 410 and the connecting channel, which is beneficial to improving the sealing effect, preventing water in the heating chamber from being output or external impurities from entering the heating chamber, and improving safety.

[0081] The electric heater involved in this application has a heating element 400 that can move up and down in the heating chamber through the driving component 300. During heating, the driving component 300 moves the heating element 400 to the upper position of the heating chamber so that the heating element 400 is close to the water inlet port 231 of the water outlet pipe 230. When the water outlet valve is opened, the heating element 400 heats the surrounding water, and the heated water can directly enter the water outlet pipe 230 from the water inlet port 231 to increase the heating speed.

[0082] When the heating is completed, the driving assembly 300 moves the heating element 400 to the lower position of the heating chamber, so that the heating element 400 is away from the water inlet port 231 of the water outlet pipe 230 to reduce the residual heat temperature rise and avoid the hot water heated by the residual heat of the heating pipe being directly output when the user opens the water outlet valve again, thereby scalding the user. The heating efficiency of the entire electric water heater is higher, more energy-saving, and safer.

[0083] In addition, when the water flow in the heating chamber contacts the heating tube or the iron heating chamber body, scale will form in the heating chamber body and the inner wall of the heating container 200 will be corroded.

[0084] refer to Figure 3 、 Figure 6-Figure 8 The heating chamber involved in this application is also provided with a descaling component 500, which ensures the cleanliness of the water flow and the heating chamber without affecting the performance of the heating cup. The descaling assembly 500 includes a descaling fixing portion 520 , a handheld portion 510 and a descaling body 530 . The handheld portion 510 and the descaling body 530 are respectively installed on both sides of the fixing portion.

[0085] The descaling body 530 is made of a highly active metal material such as a magnesium rod. The descaling component 500 is used to reduce rust on the working parts in the heating chamber, play a role in rust removal, reduce the frequency of maintenance and cleaning of the parts in the heating chamber, and is beneficial to improving water quality.

[0086] In some embodiments of the present application, a fixing protrusion 223 is formed on the cover body 220 , a threaded hole is formed in the fixing protrusion 223 , an external thread is formed on the outer periphery of the descaling fixing part 520 , and the descaling fixing part 520 is threadedly connected to the fixing protrusion 223 .

[0087] The fixing protrusion 223 helps to increase the connection contact area between the descaling assembly 500 and the cover body 220, and helps to improve the connection strength.

[0088] The handle portion 510 is made of an insulating material or an insulating layer is formed on the surface of the operating portion 710 .

[0089] During the process of disassembling the water treatment component 700 , the operator or user holds the handheld portion 510 to rotate and install or remove the descaling assembly 500 , which is beneficial to improving the safety of the operation.

[0090] The fixed part, the hand-held part 510 and the descaling body 530 in the descaling component 500 can also be a structure integrally formed by a highly active metal material such as a magnesium rod. An insulating layer is provided on the outer wall corresponding to the hand-held part 510, and the outer side of the position corresponding to the fixed part can be processed into an external thread.

[0091] It should be noted that the diameter of the position corresponding to the fixing portion is slightly larger than the diameter of the descaling body 530 to avoid interference between the descaling body 530 and the threaded hole during installation.

[0092] In some embodiments of the present application, profiles and / or reinforcing ribs are formed on the cover 220 to improve the structural strength of the cover 220 .

[0093] The sleeve portion 222 , the fixing protrusion 223 and other structures are formed on the downwardly extending profile, which is beneficial to reducing the overall height.

[0094] refer to Figure 3 、 Figure 9 When the electric water heater is not used for a long time, the water quality in the heating chamber will drop sharply as time accumulates, affecting the water quality of users. In order to ensure the water quality, the water heater needs to be disassembled and cleaned after a long period of non-use, which affects the life of the electric water heater.

[0095] In order to solve the above problem, in some other embodiments of the present application, a bypass portion 600 is further provided at the bottom of the heating container 200 to drain the accumulated water in the heating chamber before it is not used for a long time.

[0096] In other embodiments of the present application, an extension section extending to the outside of the heating container 200 is further formed on the water outlet pipe 230, and the extension section extends out of the outer wall of the heating container 200 by a certain length.

[0097] The outlet pipe is connected directly to the end of the extension.

[0098] In this embodiment, a bypass portion 600 is provided between the heating container 200 and the extension section. A bypass channel for connecting the heating chamber and the extension section is formed in the bypass portion 600. A switch valve 610 is provided in the bypass channel for controlling the switch of the bypass channel.

[0099] When the water heater is not used for a long time, the switch valve 610 is opened, the bypass channel is opened, and the remaining accumulated water in the heating chamber is discharged through the bypass channel, so as to prevent the accumulated water from deteriorating in the heating chamber for a long time, breeding bacteria, and affecting the water quality for subsequent use; The switch valve 610 includes a rotating handle 611, a rotating shaft 612 and a valve plate 613. The rotating handle 611 is located outside the bypass portion 600, the rotating shaft 612 extends into the bypass channel, and the valve plate 613 is fixed on the rotating shaft 612. As the user or operator rotates the rotating handle 611, the valve plate 613 rotates in the bypass channel to open or close the bypass channel.

[0100] In addition, the bypass portion 600 is also helpful in avoiding risks such as burns caused by excessive temperature rise due to residual heat. When the water is stopped for a period of time and heated again, the switch valve 610 is opened for a predetermined time, and the lower temperature water at the bottom of the heating chamber is mixed from the bypass channel into the water outlet pipe 230 and mixed with the output hot water, which helps to avoid the water temperature being too high after the residual heat temperature rises.

[0101] In some embodiments of the present application, the bypass portion 600 is connected to the bottom of the heating container 200 and is used to drain the residual water in the heating chamber.

[0102] The bypass portion 600 is connected to the bottom of the heating container 200, which is conducive to completely draining the water in the heating chamber and avoiding water accumulation in the heating chamber.

[0103] The bypass portion 600 is a curved pipe structure as a whole, which is integrally formed with the heating container 200, or the bypass portion 600 is manufactured separately, with a bottom port opened at the bottom of the heating container 200 and a side port provided on the side wall of the extension section. The bypass portion 600 is connected between the heating container 200 and the extension section by welding or other means.

[0104] The bypass portion 600 is manufactured separately, which helps to reduce the difficulty of processing. However, the assembly process has high requirements for sealing, and the sealing of the connection needs to be ensured.

[0105] refer to Figure 2 In some embodiments of the present application, a lifting lug 212 is formed on the peripheral side of the shell 100 to facilitate lifting the heating container 200 during installation or disassembly.

[0106] refer to Figure 10 The present application also proposes an electric water heater, which is provided with a water treatment component 700 in the heating chamber. The water treatment component 700 is configured to treat the water in the heating container 200, and can purify the water or increase the mineral components beneficial to the human body.

[0107] The water treatment component 700 may include adsorption materials such as activated carbon, or may be configured to include materials that can increase minerals that are beneficial to the human body.

[0108] Another embodiment of the present application further provides a control method for an instant electric water heater. Based on the technical solution in the above embodiment in which the heating element can move within the heating container, the control method includes: When the instant electric water heater is outputting hot water, the heating element is arranged close to the water inlet port of the water outlet pipe; When the instant electric water heater stops using water, the heating element moves to the water inlet port away from the water outlet pipe.

[0109] Specifically, during use of the instant water heater, when hot water is normally output, the heating element moves to the upper part of the heating container to be close to the water inlet port of the water outlet pipe to meet the requirement of instant hot water output.

[0110] During use, when water use is suspended, the heating element will move downward away from the water inlet port of the water outlet pipe. In this way, the residual heat of the heating element can be effectively absorbed by the cold water at the bottom of the heating container, thereby reducing the water temperature of the hot water in the top area of ​​the heating container.

[0111] Wherein, in the heating container, the water outlet port of the water inlet pipe is arranged away from the water inlet port of the water outlet pipe, and the water outlet port of the water inlet pipe is located below the water inlet port of the water outlet pipe; The heating element is moved to the water inlet port away from the water outlet pipe, specifically: After the instant electric water heater stops using water during the water use process, the heating element moves in the heating container away from the water inlet port of the water outlet pipe and closer to the water outlet port of the water inlet pipe.

[0112] In another embodiment, the control method further includes: When the instant electric water heater stops using water and starts outputting hot water again within the first set time t1, the heating element moves from the water outlet port of the water inlet pipe toward the water inlet port of the water outlet pipe to drive the water at the bottom of the heating container to flow to the top through the heating element.

[0113] Specifically, during use, if the user pauses using water for less than the first set time t1, when the user uses water again, the heating element will move upward from the water outlet port of the water inlet pipe toward the water inlet port of the water outlet pipe to meet the requirement of instant heating of water.

[0114] Moreover, during the movement of the heating element in the heating chamber, the water flow generated during the movement of the heating element will drive the water at the bottom of the heating chamber to flow upward to achieve mixing with the hot water layer at the top, thereby more effectively reducing the impact of waste heat temperature rise.

[0115] In addition, when the heating element moves to the water inlet port of the water outlet pipe, the heating element is powered on for heating, thus preventing the boiling water from being heated immediately and causing the water temperature in the heating chamber to be too high.

[0116] In another embodiment, after the instant electric water heater stops using water, the heating element moves back and forth in the heating container at least once every second set time t2 to stir the water inside the heating container so that the water at the top and bottom of the heating container are mixed.

[0117] Specifically, when water is not used, different water temperature stratification will still occur in the heating container, especially the hot water will be concentrated in the upper area of ​​the heating container. The heating element can be moved. After a period of time, the heating element can be moved back and forth in the heating container to stir the water in the heating container and mix it evenly, thereby reducing the excessively high water temperature in the upper part of the heating container.

[0118] In another embodiment, after the instant electric water heater stops using water and exceeds a third set time t3, the heating element is moved to a position close to the water inlet port of the water outlet pipe.

[0119] Specifically, after the water use is suspended for more than t3, it is determined that the user no longer uses hot water. At this time, the heating element is driven to move and reset, so that the heating element moves close to the water inlet port of the water outlet pipe to wait for the next water use requirement to quickly output hot water through the heating element.

[0120] Among them, t3≥t1>t2.

[0121] By controlling the movement of the heating element in the heating container, when water use is suspended, the heating element is controlled to move downward away from the water inlet port of the water outlet pipe. In this way, the residual heat of the heating element can be effectively absorbed by the cold water at the bottom of the heating container, thereby reducing the water temperature of the hot water in the top area of ​​the heating container, thereby solving the technical problems of the complex control process in the existing technology, simplifying the control process and improving the reliability of use.

[0122] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0123] The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An instant electric water heater, characterized in that: include: shell; a heating container, the heating container being disposed in the shell and having a heating cavity formed therein; a heating element, the heating element being disposed on the heating container and configured to electrically heat the water in the heating chamber; The heating container is provided with a water outlet pipe and a water inlet pipe; the portion of the water outlet pipe extending into the heating chamber extends to the upper portion of the heating container, and the upper pipe opening of the water outlet pipe forms a water inlet port; The water inlet pipe is arranged horizontally at the bottom of the heating container; In addition, a water retaining portion is provided on the inner wall of the heating chamber. The water retaining portion is arranged in the water outlet port and is configured to accelerate the water flow in the water inlet pipe to flow into the heating chamber.

2. The instant electric water heater according to claim 1, characterized in that: The water outlet pipe is arranged at the bottom of the heating container, and extends from the bottom of the heating chamber into the heating chamber and extends to the upper part of the heating container; The water inlet pipe is arranged on the side of the heating container, and the water outlet port is inclined to one side of the water outlet pipe and is arranged close to the front or rear of the heating container.

3. The instant electric water heater according to claim 2, characterized in that: The water retaining portion shields a portion of the water outlet port, and the water retaining portion is further provided with an extension portion, the extension portion being arranged sideways and extending into the water inlet pipe, and a gap being formed between the extension portion and the inner pipe wall of the water inlet pipe, the gap being configured to guide the water flow in the water inlet pipe to flow from a first direction to a second direction; The first direction is the length direction of the water inlet pipe, the second direction is staggered with the first direction, and the second direction is transversely arranged along the inner wall of the heating chamber.

4. The instant electric water heater according to claim 3, characterized in that: A mounting opening is formed on the heating container; The heating element includes a heating portion and a connecting portion, wherein the heating portion extends into the heating chamber and is used to heat water in the heating chamber, and the heating portion is connected to the connecting portion; the connecting portion is slidably disposed in the mounting opening and is sealed to the mounting opening; The instant electric water heater further includes a driving assembly configured to drive the connecting portion to move up and down along the installation opening.

5. The instant electric water heater according to claim 4, characterized in that: The heating portion has a spiral structure; When the heating unit moves to the lower part of the heating chamber, the heating unit is located on one side of the water outlet port, and the heating unit is further configured to guide the water output from the water outlet port to flow to the upper part of the heating chamber by using a spiral surface formed by a spiral structure; When the heating part moves to the upper part of the heating chamber, the heating part is located above the water outlet port, and the heating part is also configured to block the water flow output from the water outlet port from impacting the water layer in the upper part of the heating chamber.

6. The instant electric water heater according to claim 5, characterized in that: The heating part is sleeved on the water outlet pipe.

7. The instant electric water heater according to claim 4, characterized in that: The heating container comprises a body and a cover, the upper portion of the body is an open structure, and the cover is detachably connected to the upper portion of the body; The mounting port is provided on the cover body, and a sleeve portion is formed on the mounting port, and two ends of the sleeve portion extend out of two sides of the cover body respectively, a connecting channel is formed in the sleeve portion, and the connecting portion is connected to the connecting channel; Under the action of the driving assembly, the connecting portion can move up and down in the connecting channel.

8. The instant electric water heater according to claim 7, characterized in that: A sealing groove is formed on the inner wall of the sleeve portion. A sealing portion is installed in the sealing groove. The sealing portion is used to seal the gap between the connecting portion and the connecting channel.

9. The instant electric water heater according to claim 4, characterized in that: The driving assembly includes a motor, a screw rod and a connecting piece, wherein the connecting piece is provided with a threaded hole, the motor is arranged on the housing, the screw rod is connected to the rotating shaft of the motor, the screw rod is also threadedly connected in the threaded hole, and the connecting piece is arranged on the connecting part.

10. The instant electric water heater according to claim 1, characterized in that The heating container is also provided with a water treatment component, which is configured to perform water quality treatment on the water in the heating container.

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