Water heater

Abstract

The utility model relates to the technical field of water heaters, and provides a water heater which comprises a box body and at least two heating pipe sets, the box body is provided with a liquid storage space, an exhaust port is formed in the box body, and the exhaust port is communicated with the space above the liquid level in the liquid storage space and the outside; the at least two heating pipe sets are arranged in the liquid storage space, the heating pipe sets are suitable for heating liquid in the liquid storage space, the at least two heating pipe sets are connected in parallel, and the at least two heating pipe sets can be independently opened and closed. The heating pipe sets are arranged in parallel to achieve independent on-off control over the heating pipe sets, so that the on-off or power of the single heating pipe set can be adjusted according to the noise generated by the box body or the water temperature and the like, the surface temperature of the heating pipe sets cannot reach the boiling point, and the heating efficiency is improved. And bubbles on the surface of the heating pipe group are avoided, so that the noise reduction effect on the box body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a water heater. Background Art

[0002] With the improvement of living quality, heat storage household appliances, such as storage water heaters, have become one of the indispensable household appliances for people.

[0003] The water tank of a storage water heater is divided into two types: closed type and open type. The closed water tank is controlled by a water valve installed on the outlet pipe. When the outlet pipe water valve is closed, the liquid storage space is closed. Therefore, the closed water tank needs to withstand the water supply pressure of the water supply system, that is, it is a pressure vessel. The open water tank is controlled by a water valve installed on the water inlet pipe. The water in the liquid storage space is directly connected to the atmosphere, and the water tank does not withstand the water pressure of the water supply system.

[0004] However, when the open water heater is heating, the heating noise is loud and the sound of boiling water is obvious, which can easily cause noise interference. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model proposes a water heater, which realizes the individual switch control of the heating tube group, so as to adjust the opening and closing or the power of the single heating tube group by the size of the noise generated by the box or the high and low water temperature, so that the surface temperature of the heating tube group does not reach the boiling point, and the generation of bubbles on the surface of the heating tube group is avoided, thereby achieving the effect of reducing the noise of the box and improving the comfort and satisfaction of the user during use.

[0006] The water heater according to the utility model comprises:

[0007] A box body, wherein the box body has a liquid storage space, and an exhaust port is opened on the box body, and the exhaust port connects the space above the liquid level in the liquid storage space with the outside world;

[0008] At least two heating tube assemblies are provided in the liquid storage space, the heating tube assemblies are suitable for heating the liquid in the liquid storage space, at least two heating tube assemblies are connected in parallel with each other, and at least two heating tube assemblies can be opened and closed separately.

[0009] According to an embodiment of the utility model, the box body is a cube, and the box body has a first side wall and a second side wall arranged opposite to each other, the exhaust port is arranged on the first side wall near the top side of the box body, and at least two heating tube groups are arranged at intervals on the second side wall from the bottom of the box body toward the liquid surface.

[0010] According to an embodiment of the present invention, one of the at least two heating tube assemblies is disposed on the second side wall close to the bottom of the box, and the other one is disposed on the second side wall between the bottom of the box and the liquid surface.

[0011] According to an embodiment of the present invention, one of the at least two heating tube assemblies is disposed on the second side wall close to the bottom of the box body, and the other one is disposed on the second side wall close to the liquid surface and below the liquid surface.

[0012] According to an embodiment of the utility model, the water heater includes a first heating tube group, a second heating tube group and a third heating tube group, the first heating tube group is arranged on the second side wall close to the bottom side of the box body, the second heating tube group is arranged on the second side wall between the bottom of the box body and the liquid surface, and the third heating tube group is arranged on the second side wall close to the liquid surface and below the liquid surface.

[0013] According to an embodiment of the present invention, the water heater further comprises a controller, wherein the controller is respectively connected to the heating tube groups for communication, and the controller controls the heating tube groups to be opened and closed individually.

[0014] According to an embodiment of the utility model, the water heater further comprises a thyristor, wherein the thyristor is connected between the controller and the heating tube assembly, the thyristor is communicatively connected with the controller, and the thyristor is electrically connected with the heating tube assembly.

[0015] According to an embodiment of the utility model, the water heater further comprises a temperature sensor, and the temperature sensor is arranged on the side wall of the box body, and the temperature sensor is arranged close to the liquid surface and below the liquid surface.

[0016] According to an embodiment of the utility model, the water heater further comprises a heat exchanger, wherein the heat exchanger is disposed in the liquid storage space, and the heat exchanger is suitable for exchanging heat between water flowing through the heat exchanger and liquid in the liquid storage space.

[0017] According to an embodiment of the utility model, the box body is provided with a pressure detection component, the pressure detection component is arranged in the space above the liquid level in the liquid storage space, and the pressure detection component is suitable for detecting the actual pressure value in the box body.

[0018] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0019] The present application arranges at least two heating tube groups in a box body and arranges the heating tube groups in parallel to realize individual switch control of the heating tube groups. In this way, the opening and closing or power of a single heating tube group can be adjusted according to the noise level generated by the box body or the water temperature, so that the surface temperature of the heating tube group does not reach the boiling point, and the generation of bubbles on the surface of the heating tube group is avoided, thereby achieving the effect of reducing the noise of the box body and improving the comfort and satisfaction of the user during use.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a relationship diagram of an embodiment of a water heater provided by the utility model;

[0023] Figure 2 It is a schematic diagram of another embodiment of the water heater provided by the embodiment of the utility model;

[0024] Figure 3 It is a relationship diagram of yet another embodiment of the water heater provided by the embodiment of the utility model.

[0025] Reference numerals:

[0026] 10. Water heater;

[0027] 100, box body; 101, first side wall; 102, second side wall; 110, liquid storage space; 120, exhaust port;

[0028] 200, a first heating tube group;

[0029] 300, second heating tube group;

[0030] 400, a third heating tube group;

[0031] 500. Heat exchanger;

[0032] 600, temperature sensor;

[0033] 700. Pressure testing parts. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0035] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying 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 limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0037] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 embodiment. In this specification, the schematic representations of the above terms do 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] With the improvement of living quality, heat storage household appliances, such as storage water heaters, have become one of the indispensable household appliances for people.

[0040] The water tank of a storage water heater is divided into two types: closed type and open type. The closed water tank is controlled by a water valve installed on the water outlet pipe. When the water valve of the water outlet pipe is closed, the water storage chamber is closed. Therefore, the closed water tank needs to withstand the water supply pressure of the water supply system, that is, it is a pressure vessel. The open water tank is controlled by a water valve installed on the water inlet pipe. The water in the water storage chamber is directly connected to the atmosphere, and the water tank does not withstand the water pressure of the water supply system.

[0041] However, when the open water heater is heating, the heating noise is loud and the sound of boiling water is obvious, which can easily cause noise interference.

[0042] The utility model provides an electric water heater.

[0043] In the utility model embodiment, refer to Figure 1 to Figure 2 The water heater 10 includes a box body 100 and at least two heating tube groups. The box body 100 has a liquid storage space 110. The box body 100 is provided with an exhaust port 120, and the exhaust port 120 connects the space above the liquid surface in the liquid storage space 110 with the outside world; at least two heating tube groups are arranged in the liquid storage space 110, and the heating tube groups are suitable for heating the liquid in the liquid storage space 110. The at least two heating tube groups are connected in parallel with each other, and the at least two heating tube groups can be opened and closed separately.

[0044] It should be noted that the open-type electric water heater 10 in the related art usually connects the liquid storage space 110 with the outside world to ensure that the pressure in the liquid storage space 110 is close to the external atmospheric pressure, so as to reduce the additional pressure on the inner wall of the box body 100. Therefore, the box body 100 does not need to be set to a pressure-bearing shape (such as a barrel shape) of the liquid storage type electric water heater 10, and then the space utilization rate of the bathroom can be improved by changing the shape of the box body 100 (such as forming a flat structure and setting it in the space above the ceiling).

[0045] The water heater 10 mainly includes a housing 100 and at least two heating tube assemblies. The housing 100, as the core component of the water heater 10, has a liquid storage space 110 for storing and heating water to be used. At least two heating tube assemblies are carefully arranged in the liquid storage space 110. These heating tube assemblies are connected in parallel in the circuit. Such a design enables each heating tube assembly to be independently opened and closed, thereby realizing precise control of the heating process.

[0046] In actual use, the water heater 10 can flexibly adjust the working state of each heating tube group according to different working conditions and requirements. For example, when the water temperature in the box 100 is low, all the heating tube groups can be turned on to quickly increase the water temperature. When the water temperature approaches or reaches the set value, in order to avoid overheating and noise, some or all of the heating tube groups can be turned off.

[0047] The parallel design allows the working state of each heating tube group to be independently controlled, which greatly increases the flexibility and controllability of the heating process of the water heater 10. By accurately controlling the working state of each heating tube group, the surface temperature of the heating tube can be effectively avoided from being too high, thereby reducing the generation of bubbles. The reduction of bubbles can not only reduce the heating noise, but also improve the heating efficiency and extend the service life of the heating tube.

[0048] In addition, the water heater 10 of the present invention can also be combined with an intelligent control system to automatically adjust the working state of the heating tube group according to the change of the water temperature in the box 100 and the actual needs of the user. This intelligent control method not only improves the convenience of use of the water heater 10, but also further improves its heating performance and noise reduction effect.

[0049] The present application arranges at least two heating tube groups in the box 100 and arranges the heating tube groups in parallel to achieve individual switch control of the heating tube groups. In this way, the opening and closing or power of a single heating tube group can be adjusted by the noise level generated by the box 100 or the water temperature, so that the surface temperature of the heating tube group does not reach the boiling point, avoiding the generation of bubbles on the surface of the heating tube group, thereby achieving the effect of reducing the noise of the box 100 and improving the comfort and satisfaction of the user during use.

[0050] Reference Figure 1 According to one embodiment of the present invention, the box body 100 is a cube, and the box body 100 has a first side wall 101 and a second side wall 102 that are arranged opposite to each other. An exhaust port 120 is arranged on the first side wall 101 near the top of the box body 100, and at least two heating tube groups are arranged at intervals on the second side wall 102 from the bottom of the box body 100 toward the liquid surface. According to one embodiment of the present invention,

[0051] It is understandable that the bubbles generated on the heating tube assembly will move toward the liquid surface under the action of buoyancy, and because the air pressure at the exhaust port 120 is lower, the bubbles tend to converge toward the exhaust port 120. By changing the relative position of the exhaust port 120 and the heating tube assembly, the connecting line of the exhaust port 120 and the heating tube assembly is brought close to the diagonal line of the housing 100, and the distance of the bubbles from the heating tube assembly to the exhaust port 120 is extended as much as possible, thereby delaying the bursting time of the bubbles after floating to the liquid surface, thereby reducing the noise of the electric water heater 10.

[0052] Furthermore, due to the gravity of the liquid itself, the surface of the heating tube assembly disposed at the bottom side of the housing 100 is subjected to a greater pressure than other positions of the housing 100, thereby increasing the boiling point of the liquid near the surface of the heating tube assembly, thereby delaying the timing of bubble generation, avoiding noise caused by bubble bursting, and improving user experience.

[0053] Reference Figure 1 According to one embodiment of the present invention, one of the at least two heating tube assemblies is disposed on the second side wall 102 close to the bottom side of the box body 100, and the other one is disposed on the second side wall 102 between the bottom side of the box body 100 and the liquid surface.

[0054] It is understood that at least one of the two heating tube assemblies is disposed at the bottom of the liquid storage space 110 along the liquid level height direction of the liquid storage space 110. This allows the bottom heating tube assembly to directly heat the cold water at the bottom of the liquid storage space 110, thereby quickly increasing the overall water temperature. The heating power and working time of the bottom heating tube assembly can be precisely controlled as needed to avoid overheating and bubble generation.

[0055] Meanwhile, the other of the at least two heating tube assemblies is arranged in the middle of the liquid storage space 110 along the liquid level height direction of the liquid storage space 110. The arrangement of the middle heating tube assembly helps to heat the water in the middle of the liquid storage space 110 and achieve a more uniform heating effect. Compared with the bottom heating tube assembly, the middle heating tube assembly can be flexibly adjusted according to the distribution of water temperature to further optimize the heating process.

[0056] In this way, by arranging the heating tube groups at the bottom and the middle of the liquid storage space 110, the water heater 10 of this embodiment can effectively heat the water at different positions in the liquid storage space 110. This distributed heating method not only improves the heating efficiency, but also helps to reduce the generation of bubbles and reduce heating noise.

[0057] Reference Figure 2 According to one embodiment of the present invention, one of the at least two heating tube assemblies is disposed on the second side wall 102 close to the bottom side of the box body 100, and the other one is disposed on the second side wall 102 close to the liquid surface and below the liquid surface.

[0058] It is understandable that at least one of the two heating tube assemblies is disposed at the bottom of the liquid storage space 110 along the liquid level height direction of the liquid storage space 110. The bottom heating tube assembly is close to the bottom of the box 100 and can directly heat the cold water at the bottom of the liquid storage space 110 to quickly increase the overall water temperature. By accurately controlling the heating power and working time of the bottom heating tube assembly, overheating and the generation of a large number of bubbles can be effectively avoided.

[0059] Meanwhile, another one of the at least two heating tube assemblies is disposed at the top of the liquid storage space 110 along the liquid level height direction of the liquid storage space 110. The top heating tube assembly is located at the upper part of the housing 100, and can heat the water at the top of the liquid storage space 110 to ensure a more uniform water temperature in the entire liquid storage space 110. Compared with the bottom heating tube assembly, the top heating tube assembly can be flexibly adjusted according to the actual distribution of the water temperature to achieve more precise heating control.

[0060] In this way, by arranging the heating tube groups at the bottom and the top of the liquid storage space 110, the water heater 10 of this embodiment achieves the effect of layered heating. This heating method can not only improve the heating efficiency and reduce the heating time, but also effectively reduce the noise generated during the heating process. Because the heating tube groups are located at different heights of the liquid storage space 110, it is possible to avoid overheating the water in the entire liquid storage space 110 at the same time, thereby reducing the generation of bubbles and bursting noise.

[0061] Reference Figure 3 According to an embodiment of the present invention, the water heater 10 includes a first heating tube group 200, a second heating tube group 300 and a third heating tube group 400. The first heating tube group 200 is disposed on the second side wall 102 close to the bottom side of the tank 100, the second heating tube group 300 is disposed on the second side wall 102 between the bottom of the tank 100 and the liquid surface, and the third heating tube group 400 is disposed on the second side wall 102 close to the liquid surface and below the liquid surface.

[0062] It is understandable that the first heating tube assembly 200 is carefully arranged at the bottom of the liquid storage space 110. Since cold water is usually deposited at the bottom of the liquid storage space 110, placing the first heating tube assembly 200 at the bottom can directly heat the cold water, thereby quickly raising the water temperature of the entire liquid storage space 110.

[0063] The second heating tube assembly 300 is arranged in the middle of the liquid storage space 110 along the liquid level height direction of the liquid storage space 110. Such a design helps to further increase the water temperature in the middle of the liquid storage space 110 and ensures uniform distribution of hot water. At the same time, by accurately controlling the heating power and working time of the second heating tube assembly 300, overheating can be avoided, thereby reducing the generation of bubbles and noise.

[0064] The third heating tube assembly 400 is located at the top of the liquid storage space 110 and is arranged along the liquid level height direction. Such a layout enables the water heater 10 to heat the water in the entire liquid storage space 110 from top to bottom, ensuring the uniformity of the water temperature. At the same time, the presence of the third heating tube assembly 400 also helps to reduce the situation where the water temperature at the top of the liquid storage space 110 is too low, thereby improving the overall heating effect.

[0065] In this way, by distributing the heating tube groups at different heights of the liquid storage space 110, the water heater 10 of this embodiment can achieve the effect of layered heating. This heating method can not only improve the heating efficiency and reduce the heating time, but also effectively reduce the noise generated during the heating process. Because the heating tube groups are located at different positions of the liquid storage space 110, it is possible to avoid overheating the water in the entire liquid storage space 110, thereby reducing the generation of bubbles and bursting noise.

[0066] According to an embodiment of the present invention, the water heater 10 further includes a controller, which is respectively connected to the heating tube groups for communication, and controls the heating tube groups to be opened and closed individually.

[0067] It is understood that the controller is used to receive signals from various sensors to understand the distribution of water temperature in the liquid storage space 110 and the heating requirements set by the user. Based on this information, the controller will make intelligent judgments to determine the working status of each heating tube group.

[0068] Specifically, the controller can control the opening and closing of each heating tube assembly or adjust the power of each heating tube assembly according to the temperature change of the liquid storage space 110, so that the surface temperature of a single heating tube assembly will not be too high, resulting in the generation of bubbles. At the same time, according to the temperature change of each layer, the controller can decide to start the working state of the first, second or third heating tube assembly 400. The flexible control method can ensure that the surface temperature of the heating tube in the liquid storage space 110 does not reach the boiling point, avoid the generation of bubbles, and thus achieve the effect of noise reduction.

[0069] According to an embodiment of the present invention, the water heater 10 further includes a thyristor, which is connected between the controller and the heating tube assembly. The thyristor is communicatively connected to the controller, and the thyristor is electrically connected to the heating tube assembly.

[0070] It is understandable that the thyristor, as a power electronic device, has the ability to adjust the current. In the water heater 10 of the utility model, the thyristor is connected to the heating tube group, and the current in the heating tube group can be controlled by adjusting the conduction angle of the thyristor, thereby realizing accurate adjustment of the heating power.

[0071] Specifically, when the water heater 10 is heated to a certain temperature, the surface load of the heating tube group is large, and the heat on the surface of the heating tube does not have time to exchange with the water per unit time, and it is easy to rise to the boiling point of the water, thereby generating a large number of bubbles near the heating tube. The bubbles will quickly burst and produce a popping sound when they leave the high temperature zone during the rising process. When the heating tube group reaches the boiling point cavity and needs to reduce its heating power, the controller will send a corresponding signal to the thyristor. After receiving the signal, the thyristor will adjust its conduction angle so that the current in the heating tube group is reduced, thereby reducing the heating power. In this way, the water heater 10 can flexibly adjust the heating power according to actual needs and external conditions, so that the surface temperature of the heating tube does not reach the boiling point, avoiding the generation of bubbles, thereby achieving the effect of noise reduction.

[0072] Reference Figures 1 to 3 According to an embodiment of the present invention, the water heater 10 further includes a temperature sensor 600, which is disposed on a side wall of the housing 100, and the temperature sensor 600 is disposed close to the liquid surface and below the liquid surface.

[0073] It is understandable that the main function of the temperature sensor 600 is to detect the water temperature in the liquid storage space 110 in real time and feed this information back to the controller. The controller can accurately determine the current heating state in the liquid storage space 110 based on the received water temperature information, thereby controlling the heating power or the on / off state of the heating tube assembly.

[0074] Reference Figures 1 to 3 According to an embodiment of the present invention, the water heater 10 further includes a heat exchanger 500 , which is disposed in the liquid storage space 110 . The heat exchanger 500 is suitable for exchanging heat between water flowing through the water heater 10 and the liquid in the liquid storage space 110 .

[0075] It can be understood that the heating tube group heats the liquid in the liquid storage space 110, and the heated liquid exchanges heat with the low-temperature water in the heat exchanger 500. The low-temperature water absorbs heat and turns into high-temperature water, and then flows out of the heat exchanger 500 for use by the user. By setting the heat exchanger 500, the water in the heat exchanger 500 and the liquid in the liquid storage space 110 heated by the heating tube group are not in direct contact, which avoids the contamination of the water used by the user by the heating tube group and reduces the problem of dirt on the surface of the heating tube group due to impurities in the water.

[0076] Optionally, the liquid in the liquid storage space 110 may be an external water source similar to that of the heat exchanger 500 , or may be a heat-conducting material such as oil or a phase change energy storage material.

[0077] According to one embodiment of the present utility model, in combination with reference Figures 1 to 3As shown, the box 100 is provided with a pressure detection member 700, which is arranged in the space above the liquid level in the liquid storage space 110, and the pressure detection member 700 is suitable for detecting the actual pressure value in the box 100. The actual pressure value detected by the pressure detection member 700 can be intuitively prompted to the user in the form of a lifting component, such as a display component that can use a display (displaying the actual pressure value), a light component (a green light represents that the set pressure value has not been reached, and a red light represents that the set pressure value has been reached), a sound component (voice broadcasting the actual pressure value), etc. The pressure detector is used to detect the actual pressure value in the box 100 to prevent high-pressure rupture inside the box 100.

[0078] In this embodiment, the pressure detection component 700 can be a pressure gauge, a pressure switch, etc.

[0079] According to an embodiment of the present invention, the heating tube assembly includes a first heating tube assembly 200 and a second heating tube assembly 300, and the water heater 10 further includes a water inlet pipe and a water outlet pipe. The first heating tube assembly 200 is disposed adjacent to the water inlet pipe, and the second heating tube assembly 300 is disposed adjacent to the water outlet pipe.

[0080] It is understandable that the first heating tube assembly 200 is arranged adjacent to the water inlet pipe. Cold water usually enters the liquid storage space 110 through the water inlet pipe. Arranging the first heating tube assembly 200 near the water inlet pipe can ensure that the cold water is quickly heated after entering the liquid storage space 110. This helps to reduce the mixing of cold and hot water and improve the efficiency of hot water production. At the same time, arranging the heating tube assembly adjacent to the water inlet pipe also helps to save space and make the overall structure of the water heater 10 more compact.

[0081] The second heating tube assembly 300 is arranged adjacent to the water outlet pipe. Hot water flows out through the water outlet pipe. The second heating tube assembly 300 is arranged near the water outlet pipe to perform the final heating on the water that is about to flow out, ensuring that the water temperature obtained by the user is closer to the set value. In addition, this layout also helps to reduce the loss of heat in the liquid storage space 110 and improve the efficiency of heat energy utilization.

[0082] According to an embodiment of the present invention, the first heating tube assembly 200 at least partially extends toward the output end of the water inlet pipe and then is bent, and the second heating tube assembly 300 at least partially extends toward the output end of the water outlet pipe and then is bent.

[0083] It is understandable that, for the first heating tube assembly 200, at least a portion thereof is designed to bend after extending toward the output end of the water inlet pipe. This design allows the cold water to contact the first heating tube assembly 200 more directly after entering the liquid storage space 110 from the water inlet pipe, thereby being quickly heated. The bent portion helps to increase the contact area between the heating tube assembly and the cold water, further improving the heating efficiency. At the same time, this design can also help guide the flow of water, ensuring that the water can flow evenly through the entire liquid storage space 110, reducing the mixing of cold and hot water.

[0084] The second heating tube assembly 300 is also designed to be partially extended toward the output end of the water outlet pipe and then bend. Such a layout allows the water that is about to flow out to be heated again by the second heating tube assembly 300 before leaving the liquid storage space 110. This not only helps to improve the temperature stability of the hot water and ensure that the water temperature obtained by the user is closer to the set value, but also reduces the heat loss in the liquid storage space 110 and improves the thermal energy utilization efficiency.

[0085] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A water heater, characterized in that: include: A box body, wherein the box body has a liquid storage space, and an exhaust port is opened on the box body, and the exhaust port connects the space above the liquid level in the liquid storage space with the outside world; At least two heating tube assemblies are provided in the liquid storage space, the heating tube assemblies are suitable for heating the liquid in the liquid storage space, at least two heating tube assemblies are connected in parallel with each other, and at least two heating tube assemblies can be opened and closed separately.

2. The water heater according to claim 1, characterized in that: The box body is a cube, and has a first side wall and a second side wall arranged opposite to each other. The exhaust port is arranged on the first side wall near the top of the box body, and at least two heating tube groups are arranged at intervals on the second side wall from the bottom of the box body toward the liquid surface.

3. The water heater according to claim 2, characterized in that: One of the at least two heating tube assemblies is disposed on the second side wall close to the bottom of the box, and the other one is disposed on the second side wall between the bottom of the box and the liquid surface.

4. The water heater according to claim 2, characterized in that: At least one of the two heating tube assemblies is disposed on the second side wall close to the bottom of the box body, and the other one is disposed on the second side wall close to the liquid surface and below the liquid surface.

5. The water heater according to claim 2, characterized in that: The water heater comprises a first heating tube group, a second heating tube group and a third heating tube group, wherein the first heating tube group is arranged on the second side wall close to the bottom side of the tank body, the second heating tube group is arranged on the second side wall between the bottom side of the tank body and the liquid surface, and the third heating tube group is arranged on the second side wall close to the liquid surface and below the liquid surface.

6. The water heater according to any one of claims 1 to 4, characterized in that: The water heater further comprises a controller, which is respectively connected to the heating tube groups for communication, and controls the heating tube groups to be opened and closed individually.

7. The water heater according to claim 6, characterized in that: The water heater further comprises a thyristor, which is connected between the controller and the heating tube assembly, the thyristor is communicatively connected with the controller, and the thyristor is electrically connected with the heating tube assembly.

8. The water heater according to any one of claims 1 to 4, characterized in that: The water heater further comprises a temperature sensor, which is arranged on the side wall of the box body and is close to the liquid surface and below the liquid surface.

9. The water heater according to any one of claims 1 to 4, characterized in that: The water heater further comprises a heat exchanger, which is arranged in the liquid storage space and is suitable for heat exchange between water flowing through the heat exchanger and liquid in the liquid storage space.

10. The water heater according to any one of claims 1 to 4, characterized in that: The box body is provided with a pressure detection component, and the pressure detection component is arranged in the space above the liquid level in the liquid storage space. The pressure detection component is suitable for detecting the actual pressure value in the box body.

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