Heat exchange accessory and electric heating appliance

Abstract

The utility model discloses a heat exchange accessory and an electric heating appliance, and relates to the technical field of heat exchange. The heat exchanger specifically comprises a first flow channel, a second flow channel and a flowing structure, the first flow channel comprises at least two heat exchange holes and reversing structures, and the reversing structures communicate with the ends of the adjacent heat exchange holes in a staggered mode; the flowing structures are uniformly arranged on the two sides of the first runner; the second flow channel comprises a second water channel corresponding to the heat exchange hole, the second water channel is embedded in the heat exchange hole, and the two ends of the second water channel penetrate out of the reversing structure and communicate with the corresponding flowing structure so as to form the continuous closed second flow channel. The number of the second water channels is equal to that of the heat exchange holes, a water body can directly exchange heat with the second flow channels, the stroke of two kinds of heat exchange liquid outside the heat exchange channels is reduced, the design size of the heat exchange body is saved, the saved size is more beneficial to assembly in the installation space of the device, and the material cost needed by machining is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a heat exchange accessory and an electric heating appliance. Background Art

[0002] Heat exchange accessories refer to the various components and auxiliary equipment used in heat exchangers, which work together to achieve efficient heat transfer. A heat exchanger is a device that transfers heat between two or more liquids at different temperatures without mixing the liquids. Heat exchangers are widely used in air conditioning systems, heating systems, chemical processes, and energy recovery.

[0003] After searching, the applicant found that among the heat exchangers used on the market, there is at least one model that uses multiple winding pipes to connect into a passage, and forms another water flow passage in the outer gap of the pipe, so that two liquids of different temperatures can flow into the two passages respectively and realize heat exchange while flowing in the passages. After the heat exchange, they flow out from the outlets of their respective passages, thereby achieving a heat exchange effect. Specifically, a tube-and-tube heat exchanger proposed in Chinese patent publication No. CN116499283A.

[0004] In the above scheme, the applicant made a careful observation of its structure and found that the main purpose of the scheme was to free up a more regular space for installing a plate heat exchanger. However, since the structure circulates back and forth in a circuitous manner, and liquids of different temperatures flow in from different end covers on both sides of the heat exchanger, the hot liquid passage and the cold liquid passage are designed in a circuitous manner, and the water inlet and outlet must be set at the end of the channel, resulting in the design having an extra section of meaningless flow channel for cold liquid. This flow channel is only to ensure that the water inlet of the cold liquid channel and the water inlet of the hot liquid are set on both sides of the heat exchanger to avoid interference, and cannot participate in heat exchange with the hot liquid. This design increases the stroke of the cold liquid and also increases the size of the heat exchanger, and cannot make streamlined improvements to the structure of the heat exchanger.

[0005] Therefore, the present application aims to reduce the distance traveled by the cold liquid and the hot liquid outside the heat exchange channel, while also reducing the size of the heat exchanger for ease of installation. Utility Model Content

[0006] The main purpose of the utility model is to provide a method for reducing the distance traveled by the cold liquid and the hot liquid outside the heat exchange channel, while also reducing the size of the heat exchanger for ease of installation.

[0007] In order to achieve the above-mentioned object, the present invention provides a heat exchange accessory, including a heat exchange main body, wherein the heat exchange main body includes:

[0008] The first flow channel includes at least two heat exchange holes and a reversing structure, wherein the reversing structures are staggered and connected at ends of adjacent heat exchange holes;

[0009] flow structures, evenly arranged on both sides of the first flow channel; and

[0010] A second flow channel, comprising a second water channel corresponding to the heat exchange hole, the second water channel being nested in the heat exchange hole, with both ends of the second water channel passing through the reversing structure and communicating with the corresponding flow structure to form a continuous and closed second flow channel;

[0011] Among them, the gap between the heat exchange hole and the second water channel and the reversing structure constitute a continuous first flow channel, the flow structures at both ends of the second flow channel are respectively connected to the second flow channel water inlet end and the second flow channel water outlet end, and the heat exchange holes at both ends of the first flow channel are respectively connected to the first flow channel water inlet end and the first flow channel water outlet end.

[0012] Furthermore, a first end cover and a second end cover are respectively installed at both ends of the heat exchange body, and the flow structure is provided on a side of the first end cover and the second end cover facing the heat exchange body.

[0013] Furthermore, the water inlet end and the water outlet end of the second flow channel and the water inlet end and the water outlet end of the first flow channel are all arranged on the first end cover or the second end cover.

[0014] Furthermore, the water inlet end of the first flow channel and the water outlet end of the first flow channel are arranged on the heat exchange body, and the water inlet end of the second flow channel and the water outlet end of the second flow channel are arranged on the first end cover or the second end cover.

[0015] Furthermore, the water inlet end of the first flow channel and the water outlet end of the first flow channel are both arranged at the same end of the heat exchange body.

[0016] Furthermore, a seal is provided between the heat exchange body and the flow structure, both ends of the second water channel pass through the seal and are connected to the flow structure, and the seal is used to separate the first flow channel and the flow structure.

[0017] Furthermore, the reversing structure includes a plurality of first communicating grooves provided on the heat exchange body.

[0018] Furthermore, the second water channel includes a plurality of heat exchange tubes, and the heat exchange tubes and the flow structure constitute the continuous first flow channel.

[0019] Furthermore, the heat exchange tube is made of metal heat conductive material.

[0020] The present application also discloses an electric heating appliance, including an electric water heater, an electric boiler, an electric heater, a water purifier, a pipeline machine and an instant water dispenser using the above-mentioned heat exchange accessories.

[0021] The above technical solution has the following advantages:

[0022] The utility model provides a first flow channel and a second flow channel on a heat exchange main body, and the second water channel in the second flow channel is nested in the heat exchange hole of the first flow channel, and the other part of the second flow channel passes through the reversing structure of the first flow channel and is connected to the flow structure formed at both ends of the heat exchange main body. The two ends of the second flow channel are respectively provided with a second flow channel water inlet end and a second flow channel water outlet end which are connected to its flow structure, and the two ends of the first flow channel are respectively provided with a first flow channel water inlet end and a first flow channel water outlet end, so that the number of second water channels is equal to the number of heat exchange holes, and the first flow channel water outlet end and the first flow channel water inlet end can be installed in the nested area. After water is supplied in the first flow channel, the water body can directly exchange heat with the second flow channel, reducing the travel of the two heat exchange liquids outside the heat exchange channel, saving the design size of the heat exchange main body, and the saved size is more conducive to assembly within the installation space of the device, and also reduces the material cost required for processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0024] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0025] Figure 2 This is a schematic structural diagram of the first end cover and the second end cover of the utility model;

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the explosion structure of the utility model;

[0028] Figure 5 This is a schematic structural diagram of the heat exchange main body of the utility model;

[0029] Figure 6 This is a structural diagram of the second embodiment of the heat exchange body of the present utility model.

[0030] In the figure: 1. heat exchange body; 11. first water inlet; 12. first connecting groove; 13. heat exchange hole; 2. first end cover; 21. second water inlet; 22. second connecting groove; 3. second end cover; 4. heat exchange tube; 5. first sealing member; 6. second sealing member. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention and do not constitute a limitation to the present invention.

[0032] like Figure 1 and Figure 3 As shown, a heat exchange accessory includes a heat exchange main body 1, which includes a first flow channel, a second flow channel and a flow structure. The first flow channel includes at least two heat exchange holes 13 and a reversing structure, and the reversing structures are staggered and connected at the ends of adjacent heat exchange holes 13; the flow structure is evenly arranged on both sides of the first flow channel; the second flow channel includes a second water channel corresponding to the heat exchange hole 13, and the second water channel is nested in the heat exchange hole 13. Both ends of the second water channel pass through the reversing structure and are connected to the corresponding flow structure to form a continuous and closed second flow channel; wherein the gap between the heat exchange hole 13 and the second water channel and the reversing structure constitute a continuous first flow channel, and the flow structures at both ends of the second flow channel are respectively connected to the second flow channel water inlet end and the second flow channel water outlet end, and the heat exchange holes 13 at both ends of the first flow channel are respectively connected to the first flow channel water inlet end and the first flow channel water outlet end.

[0033] like Figure 1-Figure 3 As shown, specifically, the flow structure is used to connect the water inlet / outlet ends of adjacent second water channels and second flow channels. When there are multiple second water channels, the liquid in one of the second water channels can flow to another second water channel through the flow structure. The flow structures at both ends of the heat exchange body 1 are staggered to ensure that several second water channels can form a continuous closed second flow channel, so that the liquid in the second flow channel can achieve diversion flow to improve the heat exchange stroke. The number of heat exchange holes 13 is greater than or equal to the number of second water channels. At this time, at least one end of the first flow channel is not nested in the second flow channel. This solution can also be implemented and is a prior art. In this application, it is preferred that the number of second water channels is equal to the number of heat exchange holes 13, so that the water inlet end and the water outlet end of the first flow channel are arranged at the part where the first flow channel and the second flow channel are nested with each other. The first flow channel can also be connected from both ends of the heat exchange body 1, which not only increases the heat exchange area of ​​the first flow channel and the second flow channel, but also reduces the empty area of ​​the first flow channel or the second flow channel to avoid increasing the flow stroke of the liquid in the first flow channel or the second flow channel.

[0034] In the above solution, the shapes of the first flow channel and the second flow channel can be serpentine, square wave, or wave, the purpose of which is to increase the heat exchange area.

[0035] like Figure 1-Figure 3As shown, the second flow channel water inlet end and the second flow channel water outlet end are both equipped with a second water port 21, and the second water port 21 connects the flow structure at both ends of the second flow channel to supply or discharge liquid for the second flow channel, one of the second water ports 21 is used to supply liquid into the heat exchange main body 1, and the other second water port 21 is used to discharge the liquid in the heat exchange main body 1; the first flow channel water inlet end and the first flow channel water outlet end are both equipped with a first water port 11, one of the first water ports 11 is used to supply liquid toward one end of the first flow channel, and the other first water port 11 is used to discharge the liquid from the first flow channel; when the liquid in the first flow channel and the second flow channel flows, the liquid exchanges heat in the nested parts of the two; in addition to the above method, the two first water ports 11 can be installed at the same end of the heat exchange main body 1, or at different ends of the heat exchange main body 1.

[0036] like Figure 1 and Figure 4 As shown, the first flow channel water inlet end, the first flow channel water outlet end, the second flow channel water inlet end, and the second flow channel water outlet end on the heat exchange main body 1 are arranged at the same end, wherein the first flow channel water inlet end and the first flow channel water outlet end supply liquid toward the first flow channel through the first water inlet 11 on both sides, and the second flow channel water inlet end and the second flow channel water outlet end supply liquid toward the second flow channel through the second water inlet 21. From the above, it can be seen that the first water inlet 11 and the second water inlet 21 are installed on the same side of the heat exchange main body 1. This installation method allows the two liquids to be exchanged to flow into the first flow channel and the second flow channel respectively, and then directly contact and exchange heat. When the two liquids are discharged from the first water inlet 11 and the second water inlet 21, the temperature difference between the two liquids is small. In addition, since the second water inlet 21 needs to be connected to the flow structure, the position of the second water inlet 21 is fixed, and the position of the first water inlet 11 can be set in the middle of the heat exchange main body 1, or it can be set on the opposite side of the heat exchange main body 1 and the second water inlet 21. This method can also realize heat exchange between the liquids in the first flow channel and the second flow channel, but this solution will reduce the heat exchange area between the second flow channel and the first flow channel. It is preferred to install the first water inlet 11 and the second water inlet 21 on the same side of the heat exchange main body 1 to ensure that the liquids in the first flow channel and the second flow channel are heated more fully and evenly.

[0037] like Figure 5As shown, the reversing structure includes several first connecting grooves 12 provided in the heat exchange body 1. These first connecting grooves 12 connect the end portions of several heat exchange holes 13 to form a continuous first flow channel. The multiple heat exchange holes 13 are evenly distributed on the heat exchange body 1. The first connecting grooves 12 provided at the ends of the multiple adjacent heat exchange holes 13 are staggered, so that the multiple heat exchange holes 13 and the multiple staggered first connecting grooves 12 form a continuous first flow channel for liquid to flow in or out of the first water inlet 11. Furthermore, the first connecting grooves 12 use elbows to guide the liquid in the first flow channel. The multiple heat exchange holes 13 can be arranged equidistantly or at an angle. Specifically, the offset design can be adapted to the application to improve space conservation.

[0038] like Figure 3 and Figure 4 As shown, the second water channel includes a heat exchange tube 4 extending into the flow structure at both ends. The heat exchange tube 4 is made of a heat-conducting metal material, such as copper, aluminum, titanium, and carbon steel, to improve the heat exchange effect. Preferably, the heat exchange tube 4 is made of stainless steel to improve the drinking water quality of the user. The liquid in the second flow channel flows from the water inlet end of the second flow channel to the water outlet end of the second flow channel through the flow structure and the heat exchange tube 4. The flow structure flows from the end of the heat exchange tube 4 into the heat exchange tube 4 and out of the other end of the heat exchange tube 4. The liquid outflow end of the heat exchange tube 4 and this part of the flow structure flow into the subsequent heat exchange tube 4, thereby forming a continuous second flow channel.

[0039] like Figure 2-Figure 4 As shown, specifically, the heat exchange main body 1 adopts an integral molding setting, and the flow structure is provided at both ends of the heat exchange main body 1. The first water inlet 11 is respectively connected to the two ends of the first flow channel, and the second water flow is respectively connected to the flow structure at both ends of the second flow channel. However, the processing difficulty of this method is high, so the present application is respectively installed with a first end cover 2 and a second end cover 3 at both ends of the heat exchange main body 1, and the flow structure is provided on the side of the first end cover 2 and the second end cover 3 facing the heat exchange main body 1, wherein the flow structure of the first end cover 2 and the second end cover 3 is a second connecting groove 22, and the number of the second connecting grooves 22 is multiple, and the specific number is set according to the number of heat exchange tubes 4. The second connecting grooves 22 along both ends of the second flow channel are used to connect the second water outlet 21, and the remaining second connecting grooves 22 are used to connect the two adjacent heat exchange tubes 4; in addition to using the second connecting grooves 22, the flow structure can also use elbows embedded in the first end cover 2 and the second end cover 3 to achieve a connecting effect for the two adjacent heat exchange tubes 4. The flow structure at both ends of the second flow can use elbows, water nozzles, and water pipes embedded in the first end cover 2 and the second end cover 3. The second connecting grooves 22 flow in the same direction as the liquid in the heat exchange tube 4, the heat exchange hole 13 and the first connecting grooves 12, so as to achieve sufficient heat exchange during the liquid flow process.

[0040] As a second embodiment of the present application, when the two ends of the heat exchange body 1 are installed with the first end cover 2 and the second end cover 3, the second flow channel water inlet end, the second flow channel water outlet end and the first flow channel water inlet end, the first flow channel water outlet end are all provided on the first end cover 2 or the second end cover 3, that is, the first water port 11 and the second water port 21 are both installed on the first end cover 2 or the second end cover 3, specifically as follows Figure 6 As shown, the first water inlet 11 and the second water inlet 21 are located on the first end cover 2. Compared with arranging the first water inlet 11 on the heat exchange main body 1, this method can improve the simplicity of the structure. At this time, the flow structure connected to the first water inlet 11 is in a suspended state, and this part can be directly placed in the device to be installed.

[0041] like Figure 1 As shown, as the third embodiment of the present application, the first flow channel water inlet end and the first flow channel water outlet end are arranged on the heat exchange main body 1, and the second flow channel water inlet end and the second flow channel water outlet end are arranged on the first end cover 2 or the second end cover 3, wherein the first water port 11 is installed on the heat exchange main body 1, and the second water port 21 is installed on the first end cover 2 or the second end cover 3, the first water port 11 and the second water port 21 can be set at the same end of the heat exchange main body 1, or at different ends of the heat exchange main body 1, or the first water port 11 can be installed in the middle section of the heat exchange main body 1, and the specific installation method can be set according to the needs of technical personnel in this field. In this installation method, it is preferred to install the first water port 11 at a position close to the second water port 21 of the heat exchange main body 1 to increase the contact area between the first flow channel and the second flow channel.

[0042] like Figure 3 and Figure 4 As shown, seals are provided at the ends of the heat exchange body 1 facing the flow structure, and both ends of the heat exchange tube 4 pass through the seals and are connected to the flow structure. The seals are used to separate the first flow channel and the flow structure, wherein the seals are divided into a first seal 5 and a second seal 6. The first seal 5 is installed between the heat exchange body 1 and the first end cover 2, and the second seal 6 is installed between the heat exchange body 1 and the second end cover 3. When the first end cover 2 and the second end cover 3 are tightened and fixed on the heat exchange body 1, the first seal 5 and the second seal 6 can be directly pressed and fixed. The first seal 5 and the second end cover 3, the second seal 6 and the first end cover 2 all define the liquid flow area.

[0043] The seal can be made of rubber material, polytetrafluoroethylene, metal sealing material, or plastic material. The heat exchange tube 4 and the seal are interference fit to improve the sealing effect between the seal and the end of the heat exchange tube 4. If a metal sealing material is used, the first flow channel and the second flow channel can exchange heat between the first connecting groove 12 and the second connecting groove 22, which can further improve the heat exchange effect.

[0044] During use, two water bodies with different temperatures flow in from the first water outlet 11 and the second water outlet 21 close to each other, so that the two water bodies with different temperatures flow in the first flow channel and the second flow channel respectively. The water body in the first flow channel flows in the gap between the heat exchange hole 13 and the heat exchange tube 4, and the water body in the second flow channel flows in the heat exchange tube 4. Since the heat exchange tube 4 is a heat-conducting metal, heat exchange between the two water bodies is realized at the heat exchange hole 13. The water body in the first flow channel flows in a circuitous manner in multiple heat exchange holes 13 through the first connecting groove 12, and the water body in the second flow channel flows in a circuitous manner in multiple heat exchange holes 13 through the second connecting groove 22, realizing multiple heat exchange operations, until the water body in the first flow channel flows out from the first water outlet 11 on the other side, and the water body in the second flow channel flows out from the second water outlet 21 on the other side. The whole process can achieve the water heat exchange effect.

[0045] An electric heating appliance includes an electric water heater, an electric boiler, an electric heater, a water purifier, a pipeline machine and an instant water dispenser that use heat exchange accessories. If water at a specific temperature is required in the electric water heater, electric boiler, electric heater, water purifier, pipeline machine and instant water dispenser, a temperature detection and control circuit board is used to perform corresponding temperature detection and adjustment, and a heat exchange accessory is used to control the temperature to achieve the required water temperature.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heat exchange accessory, comprising a heat exchange body (1), characterized in that: The heat exchange body (1) comprises: A first flow channel comprises at least two heat exchange holes (13) and a reversing structure, wherein the reversing structure is staggered and connected at ends of adjacent heat exchange holes (13); flow structures, evenly arranged on both sides of the first flow channel; and A second flow channel, comprising a second water channel corresponding to the heat exchange hole (13), the second water channel being nested in the heat exchange hole (13), with both ends of the second water channel passing through the reversing structure and communicating with the corresponding flow structure to form a continuous and closed second flow channel; The heat exchange hole (13) and the gap between the second water channel and the reversing structure form a continuous first flow channel, the flow structures at both ends of the second flow channel are respectively connected to the second flow channel water inlet and the second flow channel water outlet, and the heat exchange holes (13) at both ends of the first flow channel are respectively connected to the first flow channel water inlet and the first flow channel water outlet.

2. The heat exchange accessory according to claim 1, wherein: A first end cover (2) and a second end cover (3) are respectively installed at both ends of the heat exchange main body (1), and the flow structure is provided on the side of the first end cover (2) and the second end cover (3) facing the heat exchange main body (1).

3. The heat exchange accessory according to claim 2, wherein: The second flow channel water inlet end, the second flow channel water outlet end and the first flow channel water inlet end, the first flow channel water outlet end are all arranged on the first end cover (2) or the second end cover (3).

4. The heat exchange accessory according to claim 2, wherein: The first flow channel water inlet end and the first flow channel water outlet end are arranged on the heat exchange main body (1), and the second flow channel water inlet end and the second flow channel water outlet end are arranged on the first end cover (2) or the second end cover (3).

5. The heat exchange accessory according to claim 1 or 4, characterized in that: The water inlet end of the first flow channel and the water outlet end of the first flow channel are both arranged at the same end of the heat exchange body (1).

6. The heat exchange accessory according to claim 1, wherein: A seal is provided between the heat exchange body (1) and the flow structure, both ends of the second water channel pass through the seal and communicate with the flow structure, and the seal is used to separate the first flow channel and the flow structure.

7. The heat exchange accessory according to claim 1, wherein: The reversing structure comprises a plurality of first communicating grooves (12) provided on the heat exchange body (1).

8. The heat exchange accessory according to claim 1 or 7, characterized in that: The second water channel comprises a plurality of heat exchange tubes (4), and the heat exchange tubes (4) and the flow structure form a continuous first flow channel.

9. The heat exchange accessory according to claim 8, wherein: The heat exchange tube (4) is made of a metal heat-conducting material.

10. An electric heating appliance, characterized in that: The invention comprises an electric water heater, an electric boiler, an electric heater, a water purifier, a pipeline machine and an instant water dispenser using the heat exchange accessory according to any one of claims 1 to 9.

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