Water heater

Abstract

The embodiment of the utility model provides a water heater. The water heater comprises a container body containing a phase change material. An electric heating element, a heat exchanger and a box body are arranged on the container body, and the electric heating element extends into the container body and is used for heating the phase change material; the heat exchanger comprises fins and heat exchange tubes, and the heat exchange tubes penetrate through the fins; a heat transfer medium, fins and heat exchange tubes are accommodated in the box body, and the outer wall of the box body is in contact with the phase change material; the electric heating element can heat the heat transfer medium in the box body, and the heat transfer medium transfers heat energy to the phase change material in contact with the box body through the box body. According to the water heater provided by the embodiment of the utility model, the fins and the box body containing the heat transfer medium are arranged in the liner body, so that heat generated by the electric heating element can be transferred to the phase change material in contact with the fins and the box body, and the heat radiation range of the electric heating element is enlarged; the temperature uniformity of the phase-change material in the container body and the heating efficiency of the to-be-heated water in the heat exchange pipe are improved, the water waiting time of a user is shortened, and the user experience is improved.

Description

Technical Field

[0001] The embodiments of this specification relate to the technical field of water heaters, and in particular to a water heater. Background Art

[0002] The existing electric water heaters have limited hot water supply due to the volume of the container, especially in winter, and there is a common problem of insufficient hot water. The existing phase change water heaters use heat exchange tubes and phase change materials to heat water by exchanging heat and storing energy. Before using the water, the phase change material can absorb the heat energy of the heat source; when supplying water, the energy stored in the phase change material is released to heat the cold water flowing in the heat exchange tube. However, due to the limited heat radiation capacity of the heat source and the poor fluidity of the phase change material, the heat from the heat source is difficult to be evenly transferred to the phase change material at different positions in the inner tank, resulting in low energy storage efficiency of the phase change material and limited hot water supply.

[0003] In view of this, the embodiments of this specification are intended to provide a water heater. Utility Model Content

[0004] In view of the above problems in the prior art, the purpose of the embodiments of this specification is to provide a water heater to solve the problem of limited hot water supply of electric water heaters and phase change water heaters in the prior art.

[0005] In order to solve the above technical problems, the specific technical solutions of the embodiments of this specification are as follows:

[0006] The embodiment of this specification provides a water heater, including:

[0007] A body, wherein the body contains a phase change material;

[0008] The gallbladder body comprises a cylinder and a first end and a second end arranged at two ends of the cylinder;

[0009] An electric heating element is arranged on the gallbladder body, and the electric heating element extends into the gallbladder body and is used to input heat energy into the gallbladder body to heat the phase change material;

[0010] A heat exchanger having fins and heat exchange tubes, wherein the heat exchange tubes are passed through the fins, the fins are arranged in the body, and both the fins and the heat exchange tubes are in contact with the phase change material;

[0011] A box body is arranged in the gallbladder body, a heat transfer medium is contained in the box body, and an outer wall of the box body is in contact with the phase change material;

[0012] The electric heating element can heat the heat transfer medium in the housing, and the heat transfer medium transfers the acquired heat energy to the phase change material in contact with the housing through the housing.

[0013] In some preferred embodiments, the electric heating element is at least partially located within the housing.

[0014] In some preferred embodiments, the housing has a containing space, and the heat transfer medium is arranged in the containing space.

[0015] In some preferred embodiments, the box is flat.

[0016] In some preferred embodiments, the box body disposed in the bladder body includes a first side wall facing the first end and a second side wall facing the second end, and a predetermined distance exists between the first side wall and the second side wall.

[0017] In some preferred embodiments, the box body further includes a circumferential side wall facing the cylinder body, and the circumferential side wall is connected with the first side wall and the second side wall to form an outer shell of the box body.

[0018] In some preferred embodiments, the predetermined distance between the first side wall and the second side wall is 2 mm to 100 mm.

[0019] In some preferred embodiments, the electric heating element extends into the tank body along a direction extending from the first end to the second end, and the electric heating element passes through the first side wall and the second side wall of the box body.

[0020] In some preferred embodiments, there are at least two boxes, the fins are provided between any two adjacent boxes, and the electric heating element passes through the fins between any two adjacent boxes.

[0021] In some preferred embodiments, in the height direction of the box body, the electric heating element is disposed through the lower part of the box body.

[0022] In some preferred embodiments, the heat transfer medium is water or oil.

[0023] In some preferred embodiments, the box body includes a first side wall and a second side wall that are arranged opposite to each other, and the first side wall and the second side wall extend from the first end to the second end.

[0024] In some preferred embodiments, the first side wall and the second side wall do not intersect with the direction from the first end to the second end.

[0025] In some preferred embodiments, the length of the accommodating space in the box body in the direction from the first end to the second end is greater than the length in the direction from the first side wall to the second side wall.

[0026] In some preferred embodiments, the length of the accommodating space in the box body in the direction from the first end to the second end is consistent with the length of the cylinder, and the distance between the first side wall and the second side wall ranges from 2 mm to 50 mm.

[0027] In some preferred embodiments, the box body includes a first opening opposite to the first end and a second opening opposite to the second end, the first opening is closed by the first end, and the second opening is closed by the second end.

[0028] In some preferred embodiments, the fins are arranged sequentially along a direction from the first end to the second end, and the box body passes through the fins.

[0029] In some preferred embodiments, the box bodies include at least two, and the at least two box bodies are arranged in parallel in sequence, and the arrangement direction intersects or is perpendicular to the direction from the first end to the second end.

[0030] In some preferred embodiments, the electric heating element extends into the box body along the direction from the first end to the second end, and at least part of the electric heating element is located at the lower part of the box body in the height direction of the box body.

[0031] In some preferred embodiments, there are at least two boxes, and at least two boxes are interconnected.

[0032] In some preferred embodiments, a plurality of the boxes are connected to the heat exchange tubes to form a connecting water path.

[0033] In some preferred embodiments, the water heater further comprises a water container for storing water, and the water container is connected in series and / or in parallel with the container body.

[0034] By adopting the above-mentioned technical scheme, the water heater provided in the embodiment of the present specification can transfer the heat generated by the electric heating element to the phase change material in contact with the fins and the box body by arranging fins and a box body containing a heat transfer medium in the tank body. Through the cooperation of the box body and the fins, the heat radiation range of the electric heating element is increased, the uniformity of the temperature of the phase change material in the tank body is improved, and local overheating of the phase change material causing over-temperature failure is avoided; and the heating efficiency of the water to be heated in the heat exchange tube is improved, the waiting time for users to use water is shortened, the hot water output of the water heater is increased, and the user experience is improved.

[0035] In order to make the above and other purposes, features and advantages of the embodiments of this specification more obvious and easy to understand, the following specifically cites preferred embodiments and describes them in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 An explosion schematic diagram of a water heater provided in an embodiment of this specification is shown;

[0038] Figure 2 A schematic diagram of the structure of the box body in the embodiment of this specification is shown;

[0039] Figure 3 The schematic diagram of the structure after the box and the heat exchanger are assembled is shown;

[0040] Figure 4 An explosion schematic diagram of another water heater provided in an embodiment of this specification is shown;

[0041] Figure 5 A schematic diagram of the structure in which the box body is assembled between the first end and the second end of the gallbladder body is shown.

[0042] Description of the accompanying symbols:

[0043] 10. Gallbladder;

[0044] 11. Cylinder;

[0045] 12. a first end portion;

[0046] 13. a second end portion;

[0047] 20. Electric heating element;

[0048] 30. Heat exchanger;

[0049] 31. Fins;

[0050] 32. Heat exchange tube;

[0051] 40. Box body;

[0052] 41. a first side wall;

[0053] 42, circumferential side wall;

[0054] 43. The first exposure. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0056] It should be noted that the terms "first", "second", etc. in this specification and claims and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of this specification described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0057] In order to solve the above problems, the embodiments of the present specification provide a water heater, which can solve the problem of small hot water supply of electric water heaters and phase change water heaters in the prior art.

[0058] Specific as Figures 1 to 5 As shown, the water heater may include:

[0059] A gallbladder body 10, wherein the gallbladder body 10 contains a phase change material (not shown in the figure);

[0060] The gallbladder body 10 includes a cylinder 11 and a first end 12 and a second end 13 arranged at both ends of the cylinder 11;

[0061] The gallbladder body 10 is provided with an electric heating element 20, and the electric heating element 20 extends into the gallbladder body 10 to input heat energy into the gallbladder body 10 to heat the phase change material;

[0062] A heat exchanger 30 having fins 31 and heat exchange tubes 32, wherein the heat exchange tubes 32 are passed through the fins 31, the fins 31 are arranged in the body 10, and both the fins 31 and the heat exchange tubes 32 are in contact with the phase change material;

[0063] A box body 40 is arranged in the gallbladder body 10, wherein a heat transfer medium is contained in the box body 40, and an outer wall of the box body 40 is in contact with the phase change material;

[0064] The electric heating element 20 can heat a heat transfer medium (not shown in the figure) in the housing 40 , and the heat transfer medium transfers the acquired heat energy to the phase change material in contact with the housing 40 through the housing 40 .

[0065] It should be noted that in the embodiments of this specification, the phase change material is a material whose material state changes. Specifically, when the phase change material changes from solid to liquid, it absorbs heat and stores energy; when the phase change material changes from liquid to solid, it releases energy. The heat exchange tube is used to store and circulate water to be heated. After absorbing heat and storing energy, the phase change material can release the heat energy and transfer it to the heat exchange tube in contact with the phase change material, thereby heating the water to be heated in the heat exchange tube.

[0066] A water heater provided in an embodiment of the present specification can transfer the heat generated by an electric heating element to a phase change material in contact with the fins and the box body by arranging fins and a box body containing a heat transfer medium in the tank body. Through the cooperation of the box body and the fins, the heat radiation range of the electric heating element is increased, the temperature uniformity of the phase change material in the tank body is improved, and local overheating of the phase change material causing over-temperature failure is avoided; and the heating efficiency of the water to be heated in the heat exchange tube is improved, shortening the waiting time for users to use water; and the water output of the water heater is greatly improved; which is conducive to improving the user experience.

[0067] The electric heating element 20 is at least partially located in the box 40 .

[0068] In some feasible embodiments, at least part of the electric heating element is located inside the box, and the part of the electric heating element located inside the box can directly heat the heat transfer medium in the box; the electric heating element may also be partially located outside the box, and the part of the electric heating element located outside the box can contact the phase change material in the tank and directly heat the phase change material, thereby improving the heating efficiency of the phase change material and the water to be heated flowing in the heat exchange tube.

[0069] The box body 40 has a containing space therein, and the heat transfer medium is arranged in the containing space.

[0070] In the embodiment of the present specification, the box body is a closed structure with a accommodating space formed inside. The heat transfer medium flows in the accommodating space without overflowing to the phase change material in the gallbladder body, thereby ensuring that the phase change material in the gallbladder body will not be damaged by the overflowing heat transfer medium, and also ensuring that the heat transfer medium has a good heat transfer effect on the phase change material in the box body.

[0071] like Figure 2 As shown, the box body 40 is flat.

[0072] In the embodiment of the present specification, the box body 40 is flat, that is, the box body 40 has a smaller thickness, so that the number of boxes 40 arranged in the gallbladder body 10 can be increased; at the same time, the box body has a larger surface in its flat direction, which can increase the contact area between the box body 40 and the phase change material and improve the heat transfer efficiency.

[0073] The box body 40 disposed in the bladder body 10 includes a first side wall 41 facing the first end 12 and a second side wall facing the second end 13 , and a predetermined distance is provided between the first side wall 41 and the second side wall.

[0074] That is, in a feasible embodiment, the box body 40 includes a first side wall 41 and a second side wall opposite to each other, the first side wall 41 is opposite to the first end 12, and the second side wall is opposite to the second end 13, so that the first side wall and the second side wall of the box body 40 are substantially parallel to the first end and the second end. When a plurality of boxes 40 are provided, the plurality of boxes 40 can be arranged uniformly in sequence from the first end to the second end, so as to increase the number of the boxes 40 provided in the gallbladder body 10, that is, Figure 1 As shown, heat transfer to the phase change material at different positions in the gallbladder body 10 is achieved, thereby improving the uniformity of the temperature of the phase change material at different positions in the gallbladder body 10.

[0075] The predetermined distance between the first side wall 41 and the second side wall means that the box has a certain thickness in the direction perpendicular to the first side wall and the second side wall, so that the box has a certain capacity to accommodate a certain volume of heat-conducting medium. If the thickness of the box is small (that is, the box is thin), the volume of heat transfer medium contained in it is small, the heat absorbed from the electric heating element is small, and the heat transferred to the phase change material in contact with the outer wall of the box is also limited, which is not conducive to the heat transfer effect of the phase change material in contact with the outer wall of the box. If the thickness of the box is large (that is, the box is thick), it is not conducive to the arrangement of multiple boxes along the direction from the first end to the second end of the gallbladder body; and it occupies the space of the phase change material in the gallbladder body, so that the energy stored by the phase change material for absorbing heat is reduced, which is not conducive to the heating effect of the phase change material on the water to be heated in the heat exchange tube.

[0076] The box body 40 further includes a circumferential side wall 42 facing the cylinder body 11 , and the circumferential side wall 42 is connected with the first side wall 41 and the second side wall to form an outer shell of the box body 40 .

[0077] That is, the first side wall 41 , the second side wall and the circumferential side wall 42 are enclosed to form a closed structure for accommodating the heat transfer medium.

[0078] In some preferred embodiments, the predetermined distance between the first side wall 41 and the second side wall is 2 mm to 100 mm.

[0079] By limiting the predetermined distance within the range of 2mm to 100mm, the heat transfer effect of the box body on the phase change material in contact with the outer wall of the box body is guaranteed, which is beneficial to improving the uniformity of the temperature of the phase change material in the tank body, improving the utilization efficiency of the heat generated by the electric heating element and avoiding local over-temperature failure of the phase change material; and the volume of the phase change material in the tank body is guaranteed, ensuring the heat absorption and energy storage effect of the phase change material and the heating effect on the water to be heated in the heat exchange tube, which is beneficial to improving the heating efficiency of the water to be heated in the heat exchange tube and increasing the water output of the water heater.

[0080] like Figure 1 As shown, the electric heating element 20 extends into the gallbladder body 10 along the direction in which the first end 12 extends toward the second end 13, and the electric heating element 20 passes through the first side wall 41 (such as Figure 3 as shown) and the second side wall.

[0081] That is, in a feasible embodiment, the extension direction of the electric heating element 20 is substantially perpendicular to the first side wall 41 and the second side wall of the box body 40, so that the electric heating element 20 passes through one side wall (for example, the first side wall) of the box body 40 and passes through the other side wall (for example, the second side wall) of the box body 40. When multiple boxes 40 are provided, the electric heating element 20 can pass through each box body 40 in sequence, and the electric heating element 20 can also pass through part of the box body 40, which can be arranged according to actual conditions.

[0082] It should be noted that in the embodiments of this specification, the electric heating element 20 may be provided with one or more. The number of the electric heating elements 20 is not specifically limited in the embodiments of this specification, and the number of the electric heating elements 20 may be set according to actual usage. When the electric heating element 20 is provided with more than one, the heating efficiency of the phase change material can be improved, thereby improving the heating efficiency of the water to be heated in the heat exchange tube.

[0083] In a preferred embodiment, there are at least two boxes 40, and there is a fin 31 (such as Figure 3 As shown), the electric heating element 20 passes through the fins 31 between any two adjacent boxes 40.

[0084] At least two boxes 40 can be evenly arranged in sequence in the direction between the first end 12 and the second end 13 in the gallbladder body 10, and transfer heat to the phase change material at different positions in the gallbladder body 10, thereby improving the uniformity of the temperature of the phase change material at different positions in the gallbladder body 10. In the embodiment of the present specification, by arranging fins 31 between two adjacent boxes 40, the heat of the electric heating element 20 can be transferred to the phase change material located between the two adjacent boxes 40 during the phase change material energy storage stage by using the fins 31, thereby solving the problem that the phase change material originally located in the middle of the two adjacent boxes is far away from the first side wall and the second side wall of the box, and has a slow temperature rise and low energy storage efficiency. In the phase change material releases heat energy stage, the phase change material heats the water flowing in the heat exchange tube, and the fins can evenly transfer the heat of the phase change material to the heat exchange tube, thereby improving the heating efficiency of the water to be heated in the heat exchange tube and increasing the hot water output of the water heater.

[0085] It should be noted that there may be one or more fins 31 between two adjacent boxes 40, and the number of fins 31 between any two adjacent boxes 40 may be equal or unequal. In the embodiments of this specification, there is no specific limitation on the number of fins provided between any two adjacent boxes 40, and the number may be adapted to the distance between any two adjacent boxes.

[0086] like Figure 1 As shown, in the height direction of the box body 40 , the electric heating element 20 is disposed through the lower part of the box body 40 .

[0087] After being heated, the heat transfer medium expands and tends to flow upward. In the embodiment of this specification, the electric heating element 20 is installed in the lower part of the box body 40 along the height direction of the tank body 10, so that the heat transfer medium originally located in the lower part of the box body 40 has a lower density after being heated and can flow to the upper part of the box body 40, and the heat transfer medium with a lower temperature and a higher density originally located in the upper part of the box body 40 is displaced to the lower part of the box body 40, so that the heat transfer medium in the box body 40 forms thermal convection, so as to improve the uniformity of the temperature of the heat transfer medium in the box body and improve the heating rate of the heat transfer medium by the electric heating element, which is beneficial to improve the utilization rate of the heat generated by the electric heating element and improve the heating efficiency of the box body to the phase change material in contact with the outer wall of the box body. In the embodiment of this specification, the height direction is as follows: Figure 1 The direction indicated by the arrow H in the middle is pointing upward in the height direction.

[0088] The heat transfer medium is water or oil.

[0089] Water or oil has a higher fluidity than the phase change material, which can facilitate the heat transfer medium with higher temperature and lower density in the box body near the electric heating element and heated by the electric heating element, and the heat transfer medium with lower temperature and higher density in the box body far away from the electric heating element to form heat convection in the box body, thereby increasing the heating rate of the heat transfer medium, thereby greatly improving the uniformity of the temperature of the phase change material at different positions in the tank body, improving the heating efficiency of the water to be heated in the heat exchange tube, and also helping to increase the hot water output of the water heater.

[0090] In some feasible embodiments, the box body is not connected to the heat exchange tube, that is, the box body is a closed structure, and the heat transfer medium inside the box body can be water or oil.

[0091] In other feasible embodiments, the box body can be connected to the heat exchange tube, and the heat transfer medium inside the box body is water. After the water in the heat exchange tube flows into the box body, heat convection is formed in the box body and is heated by the electric heating element, thereby heating the phase change material in contact with the outer wall of the box body, and finally heating the water in the heat exchange tube; it can also be output together with the heated water in the heat exchange tube for user use, thereby increasing the hot water output of the water heater.

[0092] In another feasible embodiment, the box body 40 includes a first side wall 41 and a second side wall (such as Figure 5 The first side wall 41 and the second side wall extend from the first end 12 to the second end 13 (as shown in FIG. Figure 4 and Figure 5 shown).

[0093] The first side wall 41 and the second side wall do not intersect the direction from the first end 12 to the second end 13 .

[0094] That is Figure 5 As shown, inside the gallbladder body, the direction from the first end 12 to the second end 13 does not intersect with the extension direction of the box body 40.

[0095] The length of the accommodation space in the box body 40 in the direction from the first end 12 to the second end 13 is greater than the length in the direction from the first side wall 41 to the second side wall. Figure 5 As shown, the box body 40 is flat. The box body has a large length in the direction from the first end to the second end, which can increase the contact area between the box body 40 and the phase change material and improve the heat transfer efficiency; the box body 40 has a small length in the direction from the first side wall to the second side wall, so that the number of boxes 40 arranged in the gallbladder body 10 can be increased.

[0096] The length of the accommodation space in the box body 40 in the direction from the first end 12 to the second end 13 is consistent with the length of the cylinder body 11, and the distance between the first side wall 41 and the second side wall ranges from 2 mm to 50 mm.

[0097] The length of the accommodation space in the box body 40 in the direction from the first end 12 to the second end 13 is consistent with the length of the cylinder body 11, and the box body can transfer the heat generated by the electric heating element to the phase change material in the gallbladder body near the first end and the second end.

[0098] like Figure 4 The box body 40 includes a first opening 43 opposite to the first end 12 and a second opening opposite to the second end 13 . The first opening 43 is closed by the first end 12 , and the second opening is closed by the second end.

[0099] That is, the first opening of the box body 40 toward the first end and the second opening toward the second end are both open. After the first opening 43 of the box body 40 is closed by the first end and the second opening of the box body is closed by the second end, a closed structure for the heat transfer medium to flow is formed in the box body, ensuring that the phase change material in the gallbladder body will not be damaged by the overflowing heat transfer medium.

[0100] like Figure 4 As shown, the fins 31 are arranged in sequence along the direction from the first end 12 to the second end 13 , and the box body 40 is disposed through the fins 31 .

[0101] That is, the fin 31 is provided with an opening for the box body 40 to pass through. In the embodiment of this specification, the heat of the electric heating element 20 is transferred to the phase change material at different positions in the gallbladder through the box body 40 and the fin 31, thereby improving the temperature increase rate and energy storage efficiency of the phase change material.

[0102] The box bodies 40 include at least two boxes, and the at least two boxes 40 are arranged in parallel in sequence, and the arrangement direction intersects or is perpendicular to the direction from the first end 12 to the second end 13 .

[0103] like Figure 4 and Figure 5 As shown, three boxes 40 may be provided, and the arrangement direction of the three boxes is perpendicular to the direction from the first end 12 to the second end 13. By providing three boxes 40, the heat generated by the electric heating element 20 can be transferred to the phase change material at different positions in the gallbladder body 10, thereby improving the uniformity of the temperature of the phase change material at different positions in the gallbladder body 10.

[0104] like Figure 4As shown, the electric heating element 20 extends into the box body 40 along the direction from the first end 12 to the second end 13, and at least part of the electric heating element 20 is located at the lower part of the box body in the height direction of the box body.

[0105] That is, the extension direction of the electric heating element 20 is parallel to the first side wall 41 and the second side wall of the box body 40. In the embodiment of the present specification, the electric heating element 20 is inserted into the lower part of the box body 40 along the height direction of the gallbladder body 10, so that the heat transfer medium originally located in the lower part of the box body 40 has its density reduced after being heated and can flow to the upper part of the box body 40, and the heat transfer medium with a lower temperature and a higher density originally located in the upper part of the box body 40 is displaced to the lower part of the box body 40, forming heat convection in the box body 40; it is beneficial to improve the utilization rate of the heat generated by the electric heating element, so as to improve the uniformity of the temperature of the heat transfer medium in the box body and improve the heating rate of the heat transfer medium by the electric heating element, thereby improving the heating efficiency of the heat transfer medium in the box body to the phase change material in contact with the outer wall of the box body. Among them, the height direction is as follows Figure 4 The direction indicated by the arrow H in the middle is pointing upward in the height direction.

[0106] In some feasible embodiments, there are at least two boxes 40, and the electric heating elements correspond to the boxes one by one, that is, each box is provided with an electric heating element at the lower part along the height direction of the tank, and each electric heating element heats the heat transfer medium in the box it passes through.

[0107] In other feasible embodiments, such as Figure 4 and Figure 5 As shown, there are at least two boxes 40, one electric heating element 20 is provided, and at least two boxes 40 are connected to each other.

[0108] After the electric heating element heats the heat transfer medium in the box through which it passes, the heat transfer medium in the box has a higher temperature, flows into other boxes and displaces the heat transfer medium with a lower temperature in other boxes to the box through which the electric heating element passes, that is, heat convection is formed in the heat transfer medium in at least two boxes that are interconnected. Therefore, it is possible to heat the heat transfer medium in multiple boxes without setting up multiple electric heating elements, which is beneficial to reducing the number of parts of the water heater and reducing the manufacturing cost.

[0109] The plurality of boxes 40 are connected to the heat exchange pipes 32 to form a connecting water path.

[0110] That is, after the multiple boxes 40 are connected to each other, they are also connected to the heat exchange tube 32. At this time, the heat transfer medium in the box is water. The water in the box and the water in the heat exchange tube are heated by the electric heating element and output together for users to use, which can significantly increase the output of hot water.

[0111] The water heater provided in the embodiment of this specification further comprises a water container (not shown in the figure) for storing water, and the water container is arranged in series and / or in parallel with the container body.

[0112] The water in the water tank can be connected in series and / or in parallel with the water in the tank body heat exchange tube and then output for use by the user, thereby increasing the water output of the water heater.

[0113] In the present specification embodiment, the combination of the elements, ingredients, parts or steps described here using the terms "comprise" or "include" also contemplates the implementation method that is basically composed of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The public "one" or "one" used to describe an element, ingredient, part or step does not say that it is for excluding other elements, ingredients, parts or steps.

[0114] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A water heater, characterized in that: include: A body, wherein the body contains a phase change material; The gallbladder body comprises a cylinder and a first end and a second end arranged at two ends of the cylinder; An electric heating element is arranged on the gallbladder body, and the electric heating element extends into the gallbladder body and is used to input heat energy into the gallbladder body to heat the phase change material; A heat exchanger having fins and heat exchange tubes, wherein the heat exchange tubes are passed through the fins, the fins are arranged in the body, and both the fins and the heat exchange tubes are in contact with the phase change material; A box body is arranged in the gallbladder body, a heat transfer medium is contained in the box body, and an outer wall of the box body is in contact with the phase change material; The electric heating element can heat the heat transfer medium in the housing, and the heat transfer medium transfers the acquired heat energy to the phase change material in contact with the housing through the housing.

2. The water heater according to claim 1, characterized in that: The electric heating element is at least partially located within the housing.

3. The water heater according to claim 2, characterized in that: The box body has a containing space therein, and the heat transfer medium is arranged in the containing space.

4. The water heater according to claim 3, characterized in that: The box body is flat.

5. The water heater according to claim 4, characterized in that: The box body arranged in the liner body comprises a first side wall facing the first end portion and a second side wall facing the second end portion, and a predetermined distance exists between the first side wall and the second side wall.

6. The water heater according to claim 5, characterized in that: The box body further includes a circumferential side wall facing the cylinder body, wherein the circumferential side wall is connected with the first side wall and the second side wall to form an outer shell of the box body.

7. The water heater according to claim 5, characterized in that: The predetermined distance between the first side wall and the second side wall is 2 mm to 100 mm.

8. The water heater according to claim 5, characterized in that: The electric heating element extends into the tank body along a direction from the first end portion to the second end portion, and the electric heating element passes through the first side wall and the second side wall of the box body.

9. The water heater according to claim 8, characterized in that: There are at least two boxes, and the fins are provided between any two adjacent boxes. The electric heating element passes through the fins between any two adjacent boxes.

10. The water heater according to claim 8, characterized in that In the height direction of the box body, the electric heating element is arranged through the lower part of the box body.

11. The water heater according to claim 1, characterized in that The heat transfer medium is water or oil.

12. The water heater according to claim 4, characterized in that The box body includes a first side wall and a second side wall that are oppositely arranged, and the first side wall and the second side wall extend along a direction from the first end to the second end.

13. The water heater according to claim 12, characterized in that The first side wall and the second side wall do not intersect a direction from the first end to the second end.

14. The water heater according to claim 12, characterized in that The length of the accommodating space in the box body in the direction from the first end to the second end is greater than the length of the accommodating space in the direction from the first side wall to the second side wall.

15. The water heater according to claim 14, characterized in that The length of the accommodating space in the box body in the direction from the first end to the second end is consistent with the length of the cylinder, and the distance between the first side wall and the second side wall ranges from 2 mm to 50 mm.

16. The water heater according to claim 12, characterized in that The box body includes a first opening opposite to the first end and a second opening opposite to the second end, the first opening is closed by the first end, and the second opening is closed by the second end.

17. The water heater according to claim 12, characterized in that The fins are arranged in sequence from the first end to the second end, and the box body passes through the fins.

18. The water heater according to claim 12, characterized in that The box bodies include at least two, and the at least two box bodies are arranged in parallel in sequence, and the arrangement direction intersects or is perpendicular to the direction from the first end to the second end.

19. The water heater according to claim 12, characterized in that The electric heating element extends into the box body along a direction from the first end to the second end, and at least a portion of the electric heating element is located at a lower portion of the box body in a height direction of the box body.

20. The water heater according to claim 12, characterized in that There are at least two boxes, and at least two boxes are connected to each other.

21. The water heater according to claim 20, characterized in that The plurality of boxes are connected to the heat exchange tubes to form a connecting water path.

22. The water heater according to claim 1, characterized in that The water heater also includes a water container for storing water, and the water container is connected in series and / or in parallel with the container body.

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