Novel heat exchange type electric water heater

Abstract

The utility model provides a novel heat exchange type electric water heater which comprises a box body, a heating tube and a heat exchange structure which exchanges heat with the outer side of the box body and the heating tube, the heat exchange structure comprises a first heat exchange tube and a second heat exchange tube which are communicated, the first heat exchange tube is arranged on the outer side of the box body and exchanges heat with the outer side of the box body, and the second heat exchange tube is arranged on the outer side of the box body. The second heat exchange pipe is located in the box body and exchanges heat with liquid in the box body. Specifically, the first heat exchange pipe can effectively utilize heat outside the box body, the temperature of liquid in the first heat exchange pipe is increased, the overall heat exchange effect is improved, heat exchange is conducted between the second heat exchange pipe and water heated by the heating pipe in the box body, so that the water temperature is increased, and through the combined action of the first heat exchange pipe and the second heat exchange pipe, the heat exchange efficiency is improved. The heating time of the electric water heater can be shortened.

Description

Technical Field

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

[0002] In the prior art, a heat exchange electric water heater includes a water tank, a heat exchange tube arranged in the water tank, a cold water inlet pipe arranged on the water tank and connected to the input end of the heat exchange tube, and a hot water outlet pipe arranged on the water tank and connected to the output end of the heat exchange tube. In order to achieve a heat preservation effect, a heat insulation layer is provided in the water tank, and the heating tube will still transfer heat to the outside of the tank. In the prior art, only a heat exchange tube is provided in the water tank, resulting in heat exchange only in the water tank, and heat to the outside of the tank will still be lost.

[0003] Chinese patent document number CN220892547U disclosed a heat exchange electric water heater in May 2024, specifically disclosed a heat exchange box, a heat storage heater, a heat exchanger, an instant heater and a thermostatic valve, the heat storage heater is arranged in the heat exchange box, used to heat the heat exchange liquid in the heat exchange box, the heat exchanger is immersed in the heat exchange liquid, used to heat and heat the water flowing through, the instant heater is connected to the hot water outlet of the heat exchange electric water heater, the thermostatic valve is connected between the hot water outlet of the heat exchange electric water heater and the cold water pipe, used to maintain a constant temperature; the heat exchange box is an open box, and an open liquid inlet pipe and an open liquid outlet pipe are provided on the heat exchange box. In the above-mentioned patent documents, heat is only exchanged inside the box through the internal heat exchanger, and heat to the outside of the box will still cause loss.

[0004] Therefore, further improvement is needed. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a new type of heat exchange electric water heater to overcome the shortcomings of the prior art. The heat exchange electric water heater can achieve heat exchange with the outside of the box, improve the heat exchange efficiency, and shorten the heating time of the electric water heater.

[0006] A new type of heat exchange electric water heater designed for this purpose includes a box body, a heating tube and a heat exchange structure for exchanging heat with the outside of the box body and the heating tube. The heat exchange structure includes a first heat exchange tube and a second heat exchange tube that are connected to each other. The first heat exchange tube is arranged on the outside of the box body, and the first heat exchange tube exchanges heat with the outside of the box body. The second heat exchange tube is located in the box body and exchanges heat with the liquid in the box body.

[0007] The first heat exchange tube has a water inlet end, and the second heat exchange tube has a water outlet end. Cold water enters the first heat exchange tube from the water inlet end, flows through the second heat exchange tube, and is discharged from the water outlet end.

[0008] The first heat exchange tube is arranged around the outer side wall of the box body from top to bottom along the height direction of the box body.

[0009] The outer circumference of the first heat exchange tube is arranged in contact with the outer side wall of the box body.

[0010] The first heat exchange tube is provided with one path, and the first heat exchange tube goes around from the top of the box body to the bottom of the box body and then penetrates into the box body to communicate with the second heat exchange tube.

[0011] There are at least two first heat exchange tubes, one of which is semi-enclosed on one side of the box, and the other is semi-enclosed on the other side of the box, and one of the first heat exchange tubes penetrates into the box and is connected with the second heat exchange tube.

[0012] The box body is also provided with a valve body, and the heat exchange electric water heater also includes a water supply pipe communicated with the interior of the box body, and the first input end of the valve body is connected to the water supply pipe.

[0013] The second input end of the valve body is connected to the water inlet end of the first heat exchange tube; the water outlet end of the second heat exchange tube is connected to the output end of the valve body.

[0014] The second heat exchange tube surrounds the heat generating tube along the height direction of the heat generating tube, and the second heat exchange tube is disposed in indirect contact with the heat generating tube.

[0015] The heat exchange electric water heater also includes an outer shell covering the outer side wall of the box body and the first heat exchange tube, and an insulation layer is provided between the outer side wall of the box body and the outer shell.

[0016] A novel heat exchange electric water heater of the above embodiment includes a box body, a heating pipe, and a heat exchange structure for exchanging heat with the outside of the box body and the heating pipe. The heat exchange structure includes a first heat exchange pipe and a second heat exchange pipe that are connected. The first heat exchange pipe is arranged on the outside of the box body, and the first heat exchange pipe exchanges heat with the outside of the box body. The second heat exchange pipe is located in the box body and exchanges heat with the heating pipe. Specifically, the first heat exchange pipe can effectively utilize the heat outside the box body, increase the temperature of the liquid in the first heat exchange pipe, and improve the overall heat exchange effect. Therefore, the heating time of the electric water heater can be shortened, so that users can get hot water faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a cross-sectional view of the box, heating pipe and heat exchange structure in the first embodiment of the utility model.

[0020] Figure 2 This is a schematic diagram of a first heat exchange tube in the first embodiment of the utility model that fully surrounds the outer side wall of the box body.

[0021] Figure 3 This is a schematic diagram of the first heat exchange tubes of the two paths semi-enclosed around the outer side walls of the box body in the first embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] First embodiment: Figure 1 and Figure 2 As shown, a novel heat exchange electric water heater is provided, comprising a housing 1, a heating tube 2 and a heat exchange structure 3 for exchanging heat with the outside of the housing 1 and the heating tube 2, the heat exchange structure 3 comprising a first heat exchange tube 301 and a second heat exchange tube 302 which are connected, the first heat exchange tube 301 being arranged on the outside of the housing 1, and the first heat exchange tube 301 exchanges heat with the outside of the housing 1, and the second heat exchange tube 302 is located in the housing 1 and exchanges heat with the liquid in the housing 1.

[0024] Specifically, the first heat exchange tube 301 can effectively utilize the heat outside the box 1, increase the temperature of the liquid in the first heat exchange tube 301, and improve the overall heat exchange effect, thereby shortening the heating time of the electric water heater, so that the user can get hot water faster;

[0025] When the electric water heater is working, the heating tube 2 starts to heat, and part of the heat generated is transferred to the water inside the box 1, and the other part is transferred to the outer wall of the box 1. The heat of the outer wall of the box 1 is exchanged through the first heat exchange tube 301, so that the heat outside the box 1 is transferred to the water flowing therethrough through the first heat exchange tube 301 and enters the inside of the box 1 and is connected with the second heat exchange tube 302. The second heat exchange tube 302 exchanges heat with the water heated by the heating tube 2 inside the box. Specifically, the water inside the box is directly heated by the heating tube 2, and the water flow exchanges heat with the heated water in the second heat exchange tube 302, further raising the water temperature. Through the joint action of the first heat exchange tube 301 and the second heat exchange tube 302, the temperature of the water flowing through the heat exchange structure 3 can be rapidly increased.

[0026] Further, if Figure 1 and Figure 2 As shown, the first heat exchange tube 301 has a water inlet end 3011 , and the second heat exchange tube 302 has a water outlet end 3021 . Cold water enters the first heat exchange tube 301 from the water inlet end 3011 , flows through the second heat exchange tube 302 , and is discharged from the water outlet end 3021 .

[0027] Specifically, the external cold water first enters the first heat exchange tube 301 from the water inlet 3011, is preliminarily heated, and then enters the second heat exchange tube 302 for further heating, forming a continuous heat exchange process, which can fully utilize the heat resources inside and outside the box 1 and improve the heat exchange efficiency.

[0028] Further, if Figure 1 and Figure 2 As shown, the first heat exchange tube 301 is arranged along the height direction of the box body 1 from top to bottom around the outer wall of the box body 1 .

[0029] Specifically, the first heat exchange tube 301 is arranged from top to bottom along the height direction of the box body 1, so that the surface area of ​​the outer wall of the entire box body can be fully utilized, the heat exchange is more uniform, and local overheating or insufficient heat will not occur; cold water enters the first heat exchange tube 301 from the water inlet end 3011, and begins to flow from top to bottom along the height direction. The first heat exchange tube 301 is in close contact with the outer wall of the box body 1. As the water flows gradually downward along the pipeline, the water continuously exchanges heat with the outer wall of the box body 1, and the water temperature gradually increases. After the initial heat exchange in the first heat exchange tube 301, the water flows into the second heat exchange tube 302 inside the box body. In the second heat exchange tube 302, the water flows directly exchange heat with the heating tube 2 to further increase the water temperature.

[0030] Specifically, the outer circumference of the first heat exchange tube 301 is arranged in contact with the outer side wall of the box body 1 .

[0031] Specifically, the outer circumference of the first heat exchange tube 301 is arranged in contact with the outer wall of the box body 1, and the heat can be efficiently transferred to the water flow through the first heat exchange tube 301; or, the outer circumferential side wall of the first heat exchange tube 301 is arranged at a distance from the outer wall of the box body 1, which can effectively and evenly transfer heat; preferably, this embodiment preferably has the outer circumferential side wall of the first heat exchange tube 301 in contact with the outer wall of the box body 1.

[0032] Further, if Figure 1 and Figure 2 As shown, one first heat exchange tube 301 is provided, and the one first heat exchange tube 301 goes around from the top of the box body 1 to the bottom of the box body and then penetrates into the box body 1 to communicate with the second heat exchange tube 302 .

[0033] Specifically, the first heat exchange tube 301 is arranged from the top to the bottom, ensuring that the heat of the outer wall of the entire box body can be effectively utilized, reducing heat waste, and extending the heat exchange path, so that the water flow undergoes heat exchange in the heat exchange tube for a longer time, thereby absorbing more heat;

[0034] Further, if Figure 1 As shown, a valve body 4 is further provided on the box body 1 , and the heat exchange electric water heater further comprises a water supply pipe 5 communicated with the interior of the box body 1 , and a first input end of the valve body 4 is connected to the water supply pipe 5 .

[0035] Specifically, through the setting of the water supply pipe 5 and the valve body 4, the water level inside the tank 1 can be automatically controlled to ensure that the water level always remains within the set range, avoiding the water level being too low to affect the heat exchange effect, and effectively preventing the dry burning phenomenon caused by the low water level in the water tank, thereby improving the safety and reliability of the electric water heater.

[0036] Further, if Figure 1 As shown, the second input end of the valve body 4 is connected to the water inlet end 3011 of the first heat exchange tube 301 ; the water outlet end 3021 of the second heat exchange tube 302 is connected to the output end of the valve body 4 .

[0037] Specifically, the entry of cold water and the output of hot water are uniformly controlled by the valve body 4. The setting of the valve body 4 ensures that cold water can smoothly enter the first heat exchange tube 301 for heat exchange, and then hot water can be discharged through the second heat exchange tube 302, thereby improving the heat exchange efficiency.

[0038] Further, if Figure 1 As shown, the second heat exchange tube 302 surrounds the heat generating tube 2 along the height direction of the heat generating tube 2 , and the second heat exchange tube 302 is disposed in indirect contact with the heat generating tube 2 .

[0039] Specifically, the second heat exchange tube 302 surrounds the heating tube 2 along the height direction of the heating tube 2, so that the heat transfer between the second heat exchange tube 302 and the heating tube 2 is more direct and efficient. The heat generated by the heating tube 2 can be more fully absorbed and transferred by the second heat exchange tube 302, thereby improving the heat exchange efficiency of the entire system.

[0040] Furthermore, the heat exchange electric water heater further comprises an outer shell covering the outer wall of the box body 1 and the first heat exchange tube 301 , and an insulation layer is provided between the outer wall of the box body 1 and the outer shell.

[0041] Specifically, an insulation layer is arranged between the outer wall of the box body 1 and the outer shell, which effectively reduces the heat loss to the outside, improves the thermal insulation performance of the electric water heater, and enables the heated water temperature to be maintained for a longer time, thereby reducing heat loss, reducing the energy consumption of the electric water heater, improving the overall energy efficiency, and having a significant energy-saving effect.

[0042] Furthermore, the thermal insulation layer includes a foamed layer.

[0043] Furthermore, the first heat exchange tube 301 and the second heat exchange tube 302 are corrugated tubes.

[0044] The second embodiment, as Figure 3 As shown, the present new heat exchange electric water heater is different from the first embodiment in that: there are at least two first heat exchange tubes 301, one of which is semi-enclosed on one side of the box body 1, and the other is semi-enclosed on the other side of the box body 1, and one of the first heat exchange tubes 301 penetrates into the box body 1 and is connected with the second heat exchange tube 302.

[0045] Specifically, at least two first heat exchange tubes 301 semi-enclose different sides of the box body 1 for heat exchange, so that the heat exchange area is increased, the heat outside the box body 1 can be more effectively utilized, and the heat exchange efficiency is improved; when working, cold water first enters one of the first heat exchange tubes 301 to exchange heat with one side of the box body 1, and then flows into the other first heat exchange tube 301, and the other first heat exchange tube 301 exchanges heat with the other side of the box body 1 and then connects with the second heat exchange tube 302, so that the water flow enters the interior of the box body 1 for further heat exchange, which further improves the heat exchange efficiency and energy efficiency, and ensures the uniformity and stability of the outlet water temperature.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a 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, a first feature being "above", "above" or "above" a 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. A first feature being "below", "below" or "below" a 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.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0051] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0052] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A new type of heat exchange electric water heater, characterized in that: The invention comprises a box (1), a heating pipe (2), and a heat exchange structure (3) for exchanging heat with the outside of the box (1) and the heating pipe (2), wherein the heat exchange structure (3) comprises a first heat exchange pipe (301) and a second heat exchange pipe (302) which are connected to each other, wherein the first heat exchange pipe (301) is arranged on the outside of the box (1) and exchanges heat with the outside of the box (1), and the second heat exchange pipe (302) is located inside the box (1) and exchanges heat with the liquid inside the box (1).

2. The novel heat exchange electric water heater according to claim 1 is characterized in that: The first heat exchange tube (301) has a water inlet end (3011), and the second heat exchange tube (302) has a water outlet end (3021); cold water enters the first heat exchange tube (301) from the water inlet end (3011), flows through the second heat exchange tube (302), and is discharged from the water outlet end (3021).

3. The novel heat exchange electric water heater according to claim 1 is characterized in that: The first heat exchange tube (301) is arranged around the outer wall of the box body (1) from top to bottom along the height direction of the box body (1).

4. The novel heat exchange electric water heater according to claim 1 is characterized in that: The outer circumference of the first heat exchange tube (301) is arranged in contact with the outer side wall of the box body (1).

5. The novel heat exchange electric water heater according to claim 1 is characterized in that: The first heat exchange tube (301) is provided with one path, wherein the first heat exchange tube (301) goes around from the top of the box body (1) to the bottom of the box body and then penetrates into the box body (1) to communicate with the second heat exchange tube (302).

6. The novel heat exchange electric water heater according to claim 1 is characterized in that: The first heat exchange tube (301) comprises at least two paths, one of which is semi-enclosed around one side of the box body (1), and the other is semi-enclosed around the other side of the box body (1), and one of which penetrates into the box body (1) and is connected to the second heat exchange tube (302).

7. The novel heat exchange electric water heater according to claim 2 is characterized in that: The box body (1) is also provided with a valve body (4), and the heat exchange electric water heater also includes a water supply pipe (5) connected to the interior of the box body (1), and a first input end of the valve body (4) is connected to the water supply pipe (5).

8. The novel heat exchange electric water heater according to claim 7 is characterized in that: The second input end of the valve body (4) is connected to the water inlet end (3011) of the first heat exchange tube (301); and the water outlet end (3021) of the second heat exchange tube (302) is connected to the output end of the valve body (4).

9. The novel heat exchange electric water heater according to claim 1 is characterized in that: The second heat exchange tube (302) surrounds the heating tube (2) along the height direction of the heating tube (2), and the second heat exchange tube (302) is arranged in indirect contact with the heating tube (2).

10. The novel heat exchange electric water heater according to claim 1 is characterized in that: The heat exchange electric water heater further comprises an outer shell covering the outer wall of the box body (1) and the first heat exchange tube (301), and a heat insulation layer is provided between the outer wall of the box body (1) and the outer shell.

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