Annular shell-and-tube heat exchanger and water outlet equipment

Abstract

The utility model provides an annular shell-and-tube heat exchanger and water outlet equipment, and relates to the technical field of heat exchange equipment. Comprising a cylindrical outer body and an inner body inserted in the outer body, a cavity is formed between the inner body and the outer body, a flow channel pipe set is installed in the cavity, and a water inlet and outlet cover and a bottom cover are arranged at the upper end and the lower end of the outer body and the upper end and the lower end of the inner body respectively. The water inlet and outlet cover and the bottom cover are connected with the flow channel pipe set to form a first flow channel, the outer side of the flow channel pipe set, the inner body and the outer body form a second flow channel in the cavity, and water at different temperatures can be guided into the first flow channel and the second flow channel so that the two flow channels can conduct heat exchange through the flow channel pipe set. According to the scheme, the heat exchanger is high in heat exchange efficiency, convenient to install and small in occupied size.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to an annular shell and tube heat exchanger and a water outlet device. Background Art

[0002] The countertop water purifiers currently on the market use a heat exchanger to cool down the boiled water to obtain warm boiled water. The existing heat exchanger has a complex structure and low heat exchange efficiency. In order to ensure the heat exchange effect of the heat exchanger, the heat exchanger needs to be made larger, which increases the production cost and takes up a large space. The utility model with publication number CN218329417U discloses a spiral heat exchange structure, but the structure requires the use of a cooling fan to dissipate heat from the pipeline, which makes the noise louder on the one hand and the cooling effect poor on the other. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide an annular shell and tube heat exchanger to solve the problems of complex structure and low heat exchange efficiency of existing heat exchangers.

[0004] The utility model adopts the following scheme: the application provides an annular shell and tube heat exchanger, including a cylindrical outer body, an inner body inserted in the outer body, and a cavity is formed between the inner body and the outer body, a flow channel tube group is installed in the cavity, and the upper and lower ends of the outer body and the inner body are respectively provided with water inlet and outlet covers and a bottom cover, the water inlet and outlet covers and the bottom cover are connected to the flow channel tube group to form a first flow channel, and the outer side of the flow channel tube group and the inner body and the outer body form a second flow channel in the cavity, and the first flow channel and the second flow channel are suitable for introducing water of different temperatures so that the two flow channels can exchange heat through the flow channel tube group.

[0005] Furthermore, alternate water channel partitions are arranged between the inner body and the outer body to form the circuitous second flow channel, and the first flow channel is formed in the second flow channel.

[0006] Furthermore, the water inlet and outlet cover includes a first fluid inlet and a first fluid outlet communicating with both ends of the first flow channel, and a first fluid outlet and a second fluid inlet communicating with both ends of the second flow channel.

[0007] Furthermore, the water flow directions in the first flow channel are opposite to those in the second flow channel.

[0008] Furthermore, the flow channel pipe group includes a plurality of connecting pipes, which are distributed around the circumference in the cavity, and a plurality of connecting water channels are staggeredly arranged on the bottom cover and the water inlet and outlet covers, respectively, and the connecting water channels connect one end of adjacent connecting pipes so that the plurality of connecting pipes form a circuitous first flow channel.

[0009] Furthermore, the connecting pipe is a metal pipe.

[0010] Furthermore, sealing members are provided between the bottom cover, the water inlet and outlet cover, and the ends of the inner body and the outer body respectively.

[0011] The utility model also provides a water outlet device, comprising the annular shell and tube heat exchanger described above.

[0012] Beneficial effects:

[0013] By setting a cylindrical inner body and an outer body, a cavity for heat exchange is formed between the inner body and the outer body, and a circulation tube group is set as a first flow channel for introducing hot water, and a second flow channel in contact with the first flow channel is formed in the cavity, so that the first flow channel and the second flow channel are isolated only by the body of the circulation tube group, so that the heat in the first flow channel can be dissipated to the second flow channel through the circulation tube group, completing the heat exchange between the two flow channels. The first flow channel and the second flow channel are arranged in a circuitous manner, and the heat exchange distance and area are greatly increased within the effective volume, thereby improving the heat exchange efficiency. The cylindrical inner body and the outer body greatly increase the area in the cavity, and the inner body can also have a large remaining space for installing other components, thereby improving the utilization of the space. Through this solution, a good cooling effect can be achieved without the need for a cooling fan to force heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an annular shell and tube heat exchanger according to an embodiment of the utility model;

[0015] Figure 2 It is a schematic cross-sectional structure diagram of an annular shell and tube heat exchanger according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the exploded structure of an annular shell and tube heat exchanger according to an embodiment of the utility model;

[0017] Figure numerals: water inlet and outlet cover 1, first fluid inlet 11, first fluid outlet 12, second fluid outlet 13, second fluid inlet 14, bottom cover 2, connecting water channel 21, inner body 3, outer body 4, cavity 41, water channel partition 42, connecting port 43, flow channel pipe group 5, sealing member 6, first flow channel 7, second flow channel 8. DETAILED DESCRIPTION

[0018] Combination Figures 1 to 3As shown, this embodiment provides a water outlet device, including an annular shell and tube heat exchanger. The annular shell and tube heat exchanger includes a cylindrical outer body 4, an inner body 3 inserted in the outer body 4, and a cavity 41 is formed between the inner body 3 and the outer body 4, a flow channel tube group 5 is installed in the cavity 41, and the upper and lower ends of the outer body 4 and the inner body 3 are respectively provided with an inlet and outlet cover 1 and a bottom cover 2, the inlet and outlet cover 1 and the bottom cover 2 are connected to the flow channel tube group 5 to form a first flow channel 7, and the outer side of the flow channel tube group 5 and the inner body 3 and the outer body 4 form a second flow channel 8 in the cavity 41, and the first flow channel 7 and the second flow channel 8 are suitable for introducing water of different temperatures so that the two flow channels can exchange heat through the flow channel tube group 5.

[0019] Combine 2 and Figure 3 As shown, in this embodiment, the inner body 3 and the outer body 4 are both provided with a tubular or cylindrical shape, the inner part of the outer body 4 is hollow, and a water channel partition 42 is formed inside, the inner body 3 is suitable for being inserted into the outer body 4, a cavity 41 is formed between the inner body 3 and the outer body 4, and another set of water channel partitions 42 is formed on the outer surface of the inner body 3, and the water channel partitions 42 of the inner body 3 and the outer body 4 cooperate to form a circuitous second flow channel 8 in the cavity 41. For example, the water channel partitions 42 of the inner body 3 and the outer body 4 can abut against each other to form a completed water channel partition 42, and at the same time, two adjacent water channel partitions 42 are alternately provided with communication ports 43 at the upper and lower ends so that the water channels formed by the water channel partitions 42 can be connected to each other to form the circuitous second flow channel 8.

[0020] The flow channel pipe group 5 is arranged in the cavity 41, specifically, it includes a plurality of connecting pipes, for example, a plurality of connecting pipes can be arranged in parallel along the central axis of the inner body 3 for easy installation, the connecting pipes are distributed around the circumference in the cavity 41, and each of the connecting pipes is fixed in the water passage surrounded by the adjacent water passage partitions 42. A plurality of connecting water passages 21 are staggeredly arranged on the bottom cover 2 and the water inlet and outlet cover 1, respectively, and the connecting water passages 21 connect one end of the adjacent connecting pipes so that the plurality of connecting pipes form a circuitous first flow channel 7. The staggered arrangement of the multiple connecting water channels 21 here refers to the staggered arrangement of the bottom cover 2 and the connecting water channels on the water inlet and outlet cover 1. For example, taking three adjacent connecting pipes as an example, the lower ends of the first connecting pipe and the second connecting pipe are connected through the connecting water channel of the bottom cover 2, and the upper ends of the second connecting pipe and the upper ends of the third connecting pipe are connected through the connecting water channel on the water inlet and outlet cover 1, so that water can flow from the first connecting pipe to the second connecting pipe, and then through the connecting water channel to the third connecting pipe, that is, the multiple connecting pipes form a circuitous first flow channel 7 through the staggered connecting water channel, and here the first flow channel 7 and the second flow channel 8 are separated only by the body of the connecting pipe, and the heat is transferred through the body of the connecting pipe. Here, the connecting pipe can adopt a metal pipe with a high heat transfer coefficient, such as a copper pipe, a stainless steel pipe, etc., so as to improve the heat exchange efficiency. And the circuitous arrangement of the first flow channel 7 makes the effective formation of water in the flow channel longer, which can improve the heat exchange efficiency within a limited volume.

[0021] Combination Figure 1 As shown, in this embodiment, the water inlet and outlet cover 1 includes a first fluid inlet 11 and a first fluid outlet 12 connected to both ends of the first flow channel 7, and a second fluid outlet 13 and a second fluid inlet 14 connected to both ends of the second flow channel 8. Here, the first fluid inlet 11 and the second fluid outlet 13 are arranged at the same end, and the first fluid outlet 12 and the second fluid inlet 14 are arranged at the same end, so that the water flow directions in the first flow channel 7 and the second flow channel 8 are opposite, further improving the heat exchange efficiency.

[0022] Combination Figure 2 and Figure 3 As shown, in order to ensure the separation of the two flow channels, a seal 6 is provided between the bottom cover 2, the water inlet and outlet cover 1 and the ends of the inner body 3 and the outer body 4 respectively, and the seal 6 improves the sealing effect between the bottom cover 2, the water inlet and outlet cover 1 and the cavity 41 of the inner body 3 and the outer body 4, and prevents cross-flow between the first flow channel 7 and the second flow channel 8.

[0023] During operation, the first flow channel 7 can be used to introduce hot water, and the second flow channel 8 can be used to introduce cold water. In the cavity 41, the first flow channel 7 and the second flow channel 8 are isolated only by the body of the circulation tube group, so that the heat in the first flow channel 7 can be quickly dissipated to the second flow channel 8 through the circulation tube group, completing the heat exchange between the two flow channels. By setting the first flow channel 7 and the second flow channel 8 in a circuitous manner, the distance and area of ​​heat exchange can be greatly increased within the effective volume heat exchange equipment, thereby improving the heat exchange efficiency. The cylindrical inner body 3 and the outer body 4 greatly increase the area within the cavity 41, and the inner body 3 can also have a large space left for installing other components, thereby improving the utilization of space.

[0024] It should be understood that the above are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0025] The above description of the drawings used in the implementation manner only shows certain embodiments of the utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

Claims

1. An annular shell and tube heat exchanger, characterized in that: It includes a cylindrical outer body and an inner body inserted in the outer body, and a cavity is formed between the inner body and the outer body, a flow channel tube group is installed in the cavity, and water inlet and outlet covers and a bottom cover are respectively provided at the upper and lower ends of the outer body and the inner body, the water inlet and outlet covers and the bottom cover are connected to the flow channel tube group to form a first flow channel, and the outer side of the flow channel tube group and the inner body and the outer body form a second flow channel in the cavity, and the first flow channel and the second flow channel are suitable for introducing water of different temperatures so that the two flow channels can exchange heat through the flow channel tube group.

2. The annular shell and tube heat exchanger according to claim 1, characterized in that: Alternating water channel partitions are arranged between the inner body and the outer body to form the circuitous second flow channel, and the first flow channel is formed in the second flow channel.

3. The annular shell and tube heat exchanger according to claim 1, characterized in that: The water inlet and outlet cover comprises a first fluid inlet and a first fluid outlet communicating with both ends of the first flow channel, and a first fluid outlet and a second fluid inlet communicating with both ends of the second flow channel.

4. The annular shell and tube heat exchanger according to claim 3, characterized in that: The water flow directions in the first flow channel are opposite to those in the second flow channel.

5. The annular shell and tube heat exchanger according to claim 1, characterized in that: The flow channel pipe group includes a plurality of connecting pipes, which are distributed around the circumference in the cavity. A plurality of connecting water channels are staggeredly arranged on the bottom cover and the water inlet and outlet covers, respectively. The connecting water channels connect one end of the adjacent connecting pipes so that the plurality of connecting pipes form a circuitous first flow channel.

6. The annular shell and tube heat exchanger according to claim 5, characterized in that: The connecting pipe is a metal pipe.

7. The annular shell and tube heat exchanger according to claim 1, characterized in that: Sealing members are arranged between the bottom cover, the water inlet and outlet cover and the ends of the inner body and the outer body respectively.

8. A water outlet device, characterized in that: The invention comprises the annular shell and tube heat exchanger as described in any one of claims 1 to 7.

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