Novel hot water heating coil structure

Abstract

The utility model relates to the technical field of heat exchange, and discloses a novel hot water heating coil pipe structure which comprises a plurality of pipe rows, each pipe row comprises a plurality of heat exchange pipes, the heat exchange pipes are fixedly connected to a supporting frame, the pipe rows comprise a front row of inlet pipe rows and a rear row of outlet pipe rows, and at least two rows of middle pipe rows are arranged between the inlet pipe rows and the outlet pipe rows. One side of the inlet pipe row is communicated with the water distribution header, one side of the outlet pipe row is communicated with the water collection header, the other side of the inlet pipe row is communicated with the middle pipe rows, the other side of the outlet pipe row is communicated with the middle pipe rows, and the middle header is communicated between the opposite sides of every two adjacent middle pipe rows. The water distribution header, the inlet pipe row, the middle pipe row, the middle header, the outlet pipe row and the water collection header are sequentially communicated to form a heat exchange medium flowing channel. According to the structure, the tube pass of the heat exchange tubes is shortened, when one or more heat exchange tubes are blocked, flowing of heat exchange media in other heat exchange tubes cannot be affected, the risk that the heating coil is frozen is reduced, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a novel hot water heating coil structure. Background Art

[0002] When fresh air heating units are used for heating in winter, hot water heating coils are usually used for heat exchange. The currently commonly used hot water heating coil structure is mostly composed of a water distribution manifold connecting the front row of branch heat exchange tubes, and each row of branch heat exchange tubes is connected by a round elbow and finally collected in the back row of branch heat exchange tubes and connected to a water collecting manifold. The heat exchange medium in each branch heat exchange tube in the hot water heating coil structure flows through a long path, and the heat exchange medium flow rate in the branch heat exchange tube is low. If a branch heat exchange tube has gas collection, blockage, etc., it will cause the branch heat exchange tube to be unable to exchange heat in several rows of heat exchange tubes after the blockage position. In severe cold or cold areas, it is also easy to cause the freezing of branch pipes, seriously affecting the heat exchange efficiency of the hot water heating coil. Utility Model Content

[0003] The utility model provides a novel hot water heating coil structure. The heat exchanger effectively shortens the length of the heat exchange tube path, reduces the risk of the heat exchange tube freezing in winter, and improves the heat exchange efficiency and stability of the heating coil by connecting intermediate headers between the inlet tube row and the adjacent intermediate tube row, between the outlet tube row and the adjacent intermediate tube row, and between the adjacent intermediate tube rows.

[0004] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0005] A novel hot water heating coil structure comprises a plurality of rows of tube rows arranged in parallel along the front-to-back direction, each row of the tube rows comprises a plurality of heat exchange tubes arranged in parallel along the up-down direction, the plurality of the heat exchange tubes are fixedly connected to a support frame, the tube rows comprise a front row and a rear row of inlet tube rows and an outlet tube row, at least two rows of intermediate tube rows are arranged between the inlet tube rows and the outlet tube rows; one side of the inlet tube row is connected to a water distribution manifold, one side of the outlet tube row is connected to a water collecting manifold, the other side of the inlet tube row is connected to the opposite side of an adjacent intermediate tube row, the other side of the outlet tube row is connected to the opposite side of an adjacent intermediate tube row, the opposite sides of two adjacent intermediate tube rows are connected to an intermediate manifold, the water distribution manifold, the inlet tube row, the intermediate tube row, the intermediate manifold, the outlet tube row and the water collecting manifold are connected in sequence to form a flow channel for a heat exchange medium.

[0006] In the above-mentioned novel hot water heating coil structure, the heat exchange tubes of two adjacent intermediate tube rows are respectively connected to the corresponding intermediate headers.

[0007] In the above-mentioned novel hot water heating coil structure, the water distribution header is in a vertical cylindrical shape, the lower part of the water distribution header is connected to the water inlet pipe, and the heat exchange pipes of the inlet pipe row are respectively connected to the water distribution header.

[0008] In the above-mentioned novel hot water heating coil structure, the water collecting manifold is in a vertical cylindrical shape, the upper part of the water collecting manifold is connected to the water outlet pipe, and the heat exchange pipes of the outlet pipe row are respectively connected to the water collecting manifold.

[0009] In the above-mentioned novel hot water heating coil structure, the side of the inlet pipe row away from the water distribution manifold is connected to the intermediate manifold with the opposite side of the adjacent intermediate pipe row.

[0010] In the above-mentioned novel hot water heating coil structure, the heat exchange tubes of the inlet tube row and the heat exchange tubes of the adjacent intermediate tube row are respectively connected to the intermediate header.

[0011] In the above-mentioned novel hot water heating coil structure, the outlet pipe row is connected to the intermediate header box from the side away from the water collecting header box and the opposite side of the adjacent intermediate pipe row.

[0012] In the above-mentioned novel hot water heating coil structure, the heat exchange tubes of the outlet tube row and the heat exchange tubes of the adjacent intermediate tube row are respectively connected to the intermediate header.

[0013] In the above-mentioned novel hot water heating coil structure, the heat exchange tubes of two adjacent intermediate tube rows are respectively connected to the corresponding intermediate headers.

[0014] In the above-mentioned novel hot water heating coil structure, the intermediate header is in the shape of a vertical cylinder, the top of the intermediate header is connected to the air valve, and the bottom of the intermediate header is connected to the drain valve.

[0015] In the above-mentioned novel hot water heating coil structure, the tops of the water distribution manifold and the water collection manifold are respectively connected to air valves, and the bottoms of the water distribution manifold and the water collection manifold are respectively connected to drain valves.

[0016] In summary, the beneficial technical effects of the present invention are:

[0017] The pipe row of the utility model includes an inlet pipe row, an outlet pipe row and an intermediate pipe row. One side of the inlet pipe row and the outlet pipe row are connected to a water-dividing manifold and a water-collecting manifold respectively. The other side of the inlet pipe row is connected to the opposite side of the adjacent intermediate pipe row with the intermediate manifold. The other side of the outlet pipe row is connected to the opposite side of the adjacent intermediate pipe row with the intermediate manifold. The opposite sides of two adjacent intermediate pipe rows are connected to the intermediate manifold. The water-dividing manifold, the inlet pipe row, the intermediate pipe row, the intermediate manifold, the outlet pipe row and the water-collecting manifold are connected in sequence to form a flow channel for the heat exchange medium. The hot water heating coil shortens the pipe length of the heat exchange tubes in each row of pipes. When one or several heat exchange tubes in a certain pipe row are blocked, it will not affect the smooth flow of the heat exchange medium in other heat exchange tubes of the pipe row, thereby reducing the risk of freezing of the hot water heating coil and improving the stability and heat exchange efficiency of the hot water heating coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 yes Figure 1 Schematic diagram of the top view structure.

[0020] As shown in the figure, 1. pipe row; 11. inlet pipe row; 12. outlet pipe row; 13. intermediate pipe row; 2. heat exchange tube; 3. support frame; 4. water distribution manifold; 41. water inlet pipe; 5. water collection manifold; 51. water outlet pipe; 6. intermediate manifold; 7. air valve; 8. drain valve. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-2 The utility model is described in further detail.

[0022] like Figure 1 , 2 As shown, a novel hot water heating coil structure comprises a plurality of rows of tube rows 1 arranged in parallel along the front-to-back direction, each row of tube rows 1 comprises a plurality of heat exchange tubes 2 arranged in parallel along the up-down direction, the plurality of heat exchange tubes 2 of each row of tube rows 1 are fixedly connected to a support frame 3, the tube rows 1 comprise front and rear rows of inlet tube rows 11 and outlet tube rows 12, at least two rows of intermediate tube rows 13 are arranged between the inlet tube rows 11 and the outlet tube rows 12; one side of the inlet tube row 11 is connected to a water distribution manifold 4, one side of the outlet tube row 12 is connected to a water collecting manifold 5, the other side of the inlet tube row 11 is connected to the opposite side of an adjacent intermediate tube row 13, the other side of the outlet tube row 12 is connected to the opposite side of an adjacent intermediate tube row 13, the opposite sides of two adjacent intermediate tube rows 13 are connected to an intermediate manifold 6, the water distribution manifold 4, the inlet tube row 11, the intermediate tube row 13, the intermediate manifold 6, the outlet tube row 12 and the water collecting manifold 5 are connected in sequence to form a flow channel for the heat exchange medium.

[0023] If there are two rows of intermediate pipe rows 13, the hot water flow path is: water distribution manifold 4---inlet pipe row 11---intermediate pipe row 13---intermediate manifold 6---intermediate pipe row 13---outlet pipe row 12---water collecting manifold 5, which are connected in sequence to form a flow channel for the heat exchange medium.

[0024] In this embodiment, the heat exchange tubes 2 of two adjacent intermediate tube rows 13 are respectively connected to the corresponding intermediate headers 6. Since the heat exchange tubes 2 of two adjacent intermediate tube rows 13 are respectively connected to the corresponding intermediate headers 6, when one or several heat exchange tubes 2 of two adjacent intermediate tube rows 13 are blocked, the flow of heat exchange medium in other heat exchange tubes 2 is not affected, thereby avoiding the freezing of the hot water heating coil due to gas collection and blockage of local heat exchange tubes 2.

[0025] like Figure 1 As shown, the water-dividing header 4 is in a vertical cylindrical shape, the lower part of the water-dividing header 4 is connected to the water inlet pipe 41, and the heat exchange tubes 2 of the inlet pipe row 11 are respectively connected to the water-dividing header 4. By setting the water-dividing header 4, the heat exchange medium flows into the water-dividing header 4 from the water inlet pipe 41, and when one or several heat exchange tubes 2 in the inlet pipe row 11 are blocked, the flow of the heat exchange medium in other heat exchange tubes 2 is not affected.

[0026] like Figure 1 As shown, the water collecting manifold 5 is in a vertical cylindrical shape, the upper part of the water collecting manifold 5 is connected to the water outlet pipe 51, and the heat exchange pipes 2 of the outlet pipe row 12 are respectively connected to the water collecting manifold 5. The heat exchange medium enters from the water inlet pipe 41 of the water distribution manifold 4, passes through the corresponding intermediate manifold 6, and finally flows out from the water outlet pipe 51 of the water collecting manifold 5, completing the heat transfer of the hot water heating coil.

[0027] In this embodiment, there are four rows of intermediate tubes 13.

[0028] In order to shorten the connection path between the heat exchange tubes 2 of the inlet tube row 11 and the heat exchange tubes 2 of the adjacent intermediate tube row 13 , the side of the inlet tube row 11 away from the water distribution manifold 4 and the opposite side of the adjacent intermediate tube row 13 are connected to the intermediate manifold 6 .

[0029] In one embodiment, the heat exchange tubes 2 of the inlet tube row 11 and the heat exchange tubes 2 of the adjacent intermediate tube row 13 are respectively connected to the intermediate header 6. By arranging the intermediate header 6 between the inlet tube row 11 and the adjacent intermediate tube row 13, if one or several heat exchange tubes 2 of the inlet tube row 11 or the adjacent intermediate tube row 13 are blocked, the existence of the intermediate header 6 does not affect the circulation of the heat exchange medium in other heat exchange tubes, thereby avoiding the freezing of the hot water heating coil due to gas collection and blockage of the local heat exchange tube 2.

[0030] In order to shorten the connection path between the heat exchange tubes 2 of the outlet tube row 12 and the heat exchange tubes 2 of the adjacent intermediate tube row 13, the intermediate header 6 is connected between the side of the outlet tube row 12 away from the water collecting header 5 and the opposite side of the adjacent intermediate tube row 13.

[0031] In another embodiment, the heat exchange tubes 2 of the outlet tube row 12 and the heat exchange tubes 2 of the adjacent intermediate tube row 13 are respectively connected to the intermediate header 6. By arranging the intermediate header 6 between the outlet tube row 12 and the adjacent intermediate tube row 13, if one or several heat exchange tubes 2 in the outlet tube row 12 or the adjacent intermediate tube row 13 are blocked, the presence of the intermediate header 6 does not affect the flow of the heat exchange medium in other heat exchange tubes 2, thereby avoiding the freezing of the hot water heating coil due to the blockage of the local heat exchange tube 2.

[0032] In this embodiment, the intermediate header 6 is in a vertical cylindrical shape, the top of the intermediate header 6 is connected to the gas valve 7, and the bottom of the intermediate header 6 is connected to the drain valve 8. The intermediate header 6 is provided with the gas valve 7 to timely discharge the gas in the hot water heating coil pipeline to ensure the normal flow and heat exchange of the heat exchange medium. The intermediate header 6 is provided with the drain valve 8 to regularly clean the sediment inside the hot water heating coil pipeline, reduce the blockage of the heat exchange tube 2, and ensure the heat exchange efficiency and stability of the hot water heating coil.

[0033] In one embodiment, the tops of the water-dividing manifold 4 and the water-collecting manifold 5 are respectively connected to the gas valve 7, and the bottoms of the water-dividing manifold 4 and the water-collecting manifold 5 are respectively connected to the drain valve 8. The gas valve 7 is arranged on the tops of the water-dividing manifold 4 and the water-collecting manifold 5 to timely discharge the gas in the hot water heating coil pipeline to ensure the normal flow and heat exchange of the heat exchange medium, and the drain valve 8 is arranged on the bottoms of the water-dividing manifold 4 and the water-collecting manifold 5 to regularly clean the sediment inside the hot water heating coil pipeline, reduce the blockage of the heat exchange tube 2, and ensure the heat exchange efficiency and stability of the hot water heating coil.

[0034] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A new type of hot water heating coil structure, characterized in that: It comprises a plurality of rows of tube rows arranged in parallel along the front-to-back direction, each row of the tube rows comprises a plurality of heat exchange tubes arranged in parallel along the up-down direction, the plurality of the heat exchange tubes are fixedly connected to a support frame, the tube rows comprise front and rear rows of inlet tube rows and outlet tube rows, at least two rows of intermediate tube rows are arranged between the inlet tube rows and the outlet tube rows; one side of the inlet tube row is connected to a water distribution manifold, one side of the outlet tube row is connected to a water collection manifold, the other side of the inlet tube row is connected to the opposite side of an adjacent intermediate tube row, the other side of the outlet tube row is connected to the opposite side of an adjacent intermediate tube row, the opposite sides of two adjacent intermediate tube rows are connected to an intermediate manifold, the water distribution manifold, the inlet tube row, the intermediate tube row, the intermediate manifold, the outlet tube row and the water collection manifold are connected in sequence to form a flow channel for the heat exchange medium.

2. The new hot water heating coil structure according to claim 1 is characterized in that: The heat exchange tubes of two adjacent intermediate tube rows are respectively connected to corresponding intermediate headers.

3. The new hot water heating coil structure according to claim 1 is characterized in that: The water-dividing header is in a vertical cylindrical shape, the lower part of the water-dividing header is connected to the water inlet pipe, and the heat exchange pipes of the inlet pipe row are respectively connected to the water-dividing header.

4. The new hot water heating coil structure according to claim 1 is characterized in that: The water collecting manifold is in a vertical cylindrical shape, the upper part of the water collecting manifold is connected to the water outlet pipe, and the heat exchange pipes of the outlet pipe row are respectively connected to the water collecting manifold.

5. The new hot water heating coil structure according to claim 1 is characterized in that: The side of the inlet pipe row away from the water distribution header is connected to the intermediate header with the opposite side of the adjacent intermediate pipe row.

6. The new hot water heating coil structure according to claim 5 is characterized in that: The heat exchange tubes of the inlet tube row and the heat exchange tubes of the adjacent intermediate tube row are respectively connected to the intermediate header.

7. The new hot water heating coil structure according to claim 1 is characterized in that: The outlet pipe row is connected to the intermediate header at one side away from the water collecting header and at the opposite side of the adjacent intermediate pipe row.

8. The new hot water heating coil structure according to claim 7 is characterized in that: The heat exchange tubes of the outlet tube row and the heat exchange tubes of the adjacent intermediate tube row are respectively connected to the intermediate header.

9. The new hot water heating coil structure according to claim 1 is characterized in that: The intermediate header is in a vertical cylindrical shape, the top of the intermediate header is connected to the air valve, and the bottom of the intermediate header is connected to the drain valve.

10. The new hot water heating coil structure according to claim 1 is characterized in that: The tops of the water distribution manifold and the water collection manifold are respectively connected to air valves, and the bottoms of the water distribution manifold and the water collection manifold are respectively connected to sewage valves.

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