Heat exchanger for recovering waste heat of heating, ventilation, air supply and exhaust of clean room

Abstract

The utility model relates to a clean room heating, ventilation, air supply and exhaust waste heat recovery heat exchanger which comprises a heat exchanger body, the heat exchanger body is provided with a first heat exchange channel and a second heat exchange channel, and the first heat exchange channel and the second heat exchange channel are isolated from each other. The fluid in the first heat exchange channel is used for exchanging heat with the fluid in the second heat exchange channel; the clean room heating, ventilation, air supply and exhaust waste heat recovery heat exchanger comprises an air inlet filtering part, the air inlet filtering part is connected with the heat exchanger body and covers the first heat exchange channel, the heat exchanger body is connected with a first shaft, and the first shaft is used for being rotationally connected with the body. The axis of the heat exchanger body coincides with the axis of the first shaft. The heat exchanger body is connected with a driving assembly used for driving the heat exchanger body to rotate. According to the air inlet filtering device, the effect of cleaning the air inlet filtering part under the condition that the air inlet filtering part is not detached can be achieved.

Description

A cleanroom HVAC supply and exhaust air waste heat recovery heat exchanger Technical Field

[0001] This application relates to the field of cleanrooms, and more particularly to a cleanroom HVAC supply and exhaust waste heat recovery heat exchanger. Background Technology

[0002] Cleanrooms are mainly used in areas such as biopharmaceutical manufacturing, negative pressure operating rooms in hospitals, negative pressure isolation wards, intravenous preparation centers, and biosafety laboratories. The HVAC system in cleanrooms is used to maintain indoor temperature and humidity within a stable range.

[0003] In related technologies, referring to Figure 5, a cleanroom HVAC system includes a main body 1, a dehumidification and humidification module 21, a heating and cooling module 22, an exhaust fan 31, an air supply fan 23, an exhaust filter 32, an inlet filter 24, a sterilization module 33, and a waste heat recovery heat exchanger 4. The main body 1 has an air supply duct 2 and an exhaust duct 3. The waste heat recovery heat exchanger 4 has a first heat exchange channel 411 and a second heat exchange channel 412. The air supply duct 2 is connected to the first heat exchange channel 411, and the exhaust duct 3 is connected to the second heat exchange channel 412. The dehumidification and humidification module 21, the heating and cooling module 22, the air supply fan 23, and the inlet filter 24 are all located in the air supply duct 2. The sterilization module 33, the exhaust filter 32, and the exhaust fan 31 are all located in the exhaust duct 3. The inlet filter 24 is connected to the wall corresponding to the air supply duct 2.

[0004] Regarding the aforementioned technologies, the inventors believe that the following drawbacks exist: the air inlet filter is connected to the wall corresponding to the air supply duct, and when the air inlet filter is blocked, it needs to be disassembled and replaced, which is inconvenient. Summary of the Invention

[0005] To facilitate the cleaning of the air inlet filter, this application provides a cleanroom HVAC supply and exhaust waste heat recovery heat exchanger.

[0006] The cleanroom HVAC waste heat recovery heat exchanger provided in this application adopts the following technical solution:

[0007] A cleanroom HVAC supply and exhaust waste heat recovery heat exchanger includes a heat exchanger body, the heat exchanger body having a first heat exchange channel and a second heat exchange channel, the first heat exchange channel and the second heat exchange channel being isolated from each other, and the fluid in the first heat exchange channel being used for heat exchange with the fluid in the second heat exchange channel; the cleanroom HVAC supply and exhaust waste heat recovery heat exchanger includes an air inlet filter section, the air inlet filter section being connected to the heat exchanger body and covering the first heat exchange channel, the heat exchanger body being connected to a first shaft, the first shaft being used for rotatable connection with the body, the axis of the heat exchanger body coinciding with the axis of the first shaft; the heat exchanger body is connected to a drive assembly for driving the heat exchanger body to rotate.

[0008] By adopting the above technical solution, when it is necessary to clean the air inlet filter, the drive component drives the heat exchanger body to rotate, so that the air inlet filter rotates to the exhaust duct. Through the exhaust fan of the exhaust duct, the air inlet filter can be cleaned without disassembling it. Attached Figure Description

[0009] Figure 1 is a schematic diagram of a cleanroom HVAC supply and exhaust waste heat recovery heat exchanger according to this application.

[0010] Figure 2 is a schematic diagram of the other side of the waste heat recovery heat exchanger for HVAC supply and exhaust air in the clean room shown in Figure 1.

[0011] Figure 3 is a schematic diagram of the cleanroom HVAC supply and exhaust air device in the first state, with the cleanroom HVAC supply and exhaust air waste heat recovery heat exchanger of Figure 1.

[0012] Figure 4 is a schematic diagram of the cleanroom HVAC supply and exhaust system in the second state.

[0013] Figure 5 is a schematic diagram of a cleanroom HVAC system in related technologies.

[0014] Reference numerals: 1. Main body; 2. Air supply duct; 21. Dehumidification and humidification module; 22. Heating and cooling module; 23. Air supply fan; 24. Air inlet filter; 211. First sub-air supply duct; 212. Second sub-air supply duct; 3. Exhaust duct; 31. Exhaust fan; 32. Exhaust filter; 33. Sterilization module; 311. First sub-exhaust duct; 312. Second sub-exhaust duct; 4. Waste heat recovery heat exchanger; 41. Heater body; 411, First heat exchange channel; 4111, First inlet; 4112, First outlet; 412, Second heat exchange channel; 4121, Second inlet; 4122, Second outlet; 413, First side wall; 414, Second side wall; 415, Third side wall; 416, Fourth side wall; 42, First shaft; 43, Baffle; 44, First blocking part; 45, Second blocking part; 5, Drive assembly; 51, Drive motor. Detailed Implementation

[0015] The present application will be further described in detail below with reference to Figures 1-4.

[0016] This application discloses a cleanroom HVAC supply and exhaust waste heat recovery heat exchanger 4. Referring to Figures 1 and 2, the cleanroom HVAC supply and exhaust waste heat recovery heat exchanger 4 includes a heat exchanger body 41, which has a first heat exchange channel 411 and a second heat exchange channel 412. The first heat exchange channel 411 and the second heat exchange channel 412 are isolated from each other. The fluid in the first heat exchange channel 411 is used to exchange heat with the fluid in the second heat exchange channel 412. The cleanroom HVAC supply and exhaust waste heat recovery heat exchanger 4 includes an inlet air filter 24, which is connected to the heat exchanger body 41 and covers the first heat exchange channel 411. The heat exchanger body 41 is connected to a first shaft 42, which is rotatably connected to the body 41. The axis of the heat exchanger body 41 coincides with the axis of the first shaft 42. The heat exchanger body 41 is connected to a drive assembly 5 for driving the heat exchanger body 41 to rotate.

[0017] In use, referring to Figures 3 and 4, if it is necessary to clean the air inlet filter 24, the drive assembly 5 drives the heat exchanger body 41 to rotate, so that the air inlet filter 24 rotates to the exhaust duct 3. Since impurities are blocked to one side of the air inlet filter 24 under normal working conditions, in the cleaning state, the drive assembly 5 drives the air inlet filter 24 to rotate to the exhaust duct 3, and the air from the exhaust fan 31 blows from the other side of the air inlet filter 24 to the air inlet filter 24, thereby blowing out the impurities attached to the air inlet filter 24, thus achieving the cleaning of the air inlet filter 24 without disassembling it.

[0018] Specifically, the axis of the first shaft 42 coincides with the axis of the heat exchanger body 41, and the first shaft 42 is fixedly connected to one end face of the heat exchanger body 41. Furthermore, the first heat exchange channel 411 and the second heat exchange channel 412 are arranged perpendicularly, and the fluid in the first heat exchange channel 411 exchanges heat with the fluid in the second heat exchange channel 412.

[0019] Furthermore, the heat exchanger body 41 is connected to a second shaft, which is coaxially arranged with the first shaft 42 and is used for rotatable connection with the body 1.

[0020] In some embodiments, referring to Figures 3 and 4, the first heat exchange channel 411 has a first inlet 4111 and a first outlet 4112, and the second heat exchange channel 412 has a second inlet 4121 and a second outlet 4122. The air inlet filter 24 covers the first outlet 4112. Specifically, the air inlet filter 24 is welded to the heat exchanger body 41.

[0021] In some embodiments, referring to Figures 3 and 4, a plane perpendicular to the axis of the first shaft 42 is defined as a cross-section, and the heat exchanger body 41 is square in cross-section. The drive assembly 5 can drive the heat exchanger body 41 to rotate 90 degrees counterclockwise. Setting the cross-section as a square ensures that after the drive assembly 5 drives the heat exchanger body 41 to rotate 90 degrees, it still maintains the state before rotation, achieving consistency before and after rotation and reducing the impact of rotation on sealing.

[0022] Specifically, referring to Figures 1 and 2, the extension direction of the first heat exchange channel 411 is parallel to the length direction of one side of the heat exchanger body 41 in the cross-section, and the extension direction of the second heat exchange channel 412 is parallel to the length direction of the other side of the heat exchanger body 41 in the cross-section.

[0023] In some embodiments, referring to Figures 1 and 2, the heat exchanger body 41 has a first sidewall 413, a second sidewall 414, a third sidewall 415, and a fourth sidewall 416. In a clockwise direction, the first sidewall 413, the second sidewall 414, the third sidewall 415, and the fourth sidewall 416 are arranged sequentially around the rotation axis of the heat exchanger body 41. The first sidewall 413 has a first inlet 4111, the second sidewall 414 has a second inlet 4121, the third sidewall 415 has a first outlet 4112, and the fourth sidewall 416 has a second outlet 4122.

[0024] Specifically, referring to Figures 1 and 2, the extension direction of the first heat exchange channel 411 is perpendicular to the first sidewall 413 and the third sidewall 415, and the extension direction of the second heat exchange channel 412 is perpendicular to the second sidewall 414 and the fourth sidewall 416. Further, the first sidewall 413 is perpendicular to the second sidewall 414, the second sidewall 414 is perpendicular to the third sidewall 415, the third sidewall 415 is perpendicular to the fourth sidewall 416, and the first sidewall 413 is perpendicular to the fourth sidewall 416.

[0025] In some embodiments, referring to Figures 1 and 2, the drive assembly 5 includes a drive motor 51, which is fixedly connected to the body 1, and the output shaft of the drive motor 51 is fixedly connected to the first shaft 42. Specifically, the drive motor 51 is a servo motor or a stepper motor, and the motor housing of the drive motor 51 is fixedly connected to the body 1.

[0026] In some embodiments, referring to Figures 3 and 4, the main body 1 has an air supply duct 2 and an air exhaust duct 3. The air supply duct 2 includes a first sub-air supply duct 211 and a second sub-air supply duct 212, which are located on both sides of the heat exchanger main body 41, respectively. The air exhaust duct 3 includes a first sub-exhaust duct 311 and a second sub-exhaust duct 312, which are located on both sides of the heat exchanger main body 41, respectively. The cleanroom HVAC waste heat recovery heat exchanger 4 has a first state and a second state. In the first state, the first inlet 4111 is connected to the first sub-supply air duct 211, the first outlet 4112 is connected to the second sub-supply air duct 212, the second inlet 4121 is connected to the first sub-exhaust air duct 311, and the second outlet 4122 is connected to the second sub-exhaust air duct 312. In the second state, the first outlet 4112 is connected to the first sub-exhaust air duct 311, the first inlet 4111 is connected to the second sub-exhaust air duct 312, the second inlet 4121 is connected to the first sub-supply air duct 211, and the second outlet 4122 is connected to the second sub-supply air duct 212.

[0027] With the above scheme, referring to Figure 3, in the first state, the air inlet filter 24 blocks impurities, and the blocked impurities are located on the side of the air inlet filter 24 facing the first heat exchange channel 411.

[0028] When it is necessary to clean the inlet air filter section 24, the drive motor 51 drives the heat exchanger body 41 to rotate 90 degrees to change to the second state. Referring to Figure 4, in the second state, the inlet air filter section 24 is located in the exhaust air duct 3. The exhaust fan 31 blows air from the first sub-supply air duct 211 into the first heat exchange channel 411, so as to blow impurities out of the inlet air filter section 24, and clean the inlet air filter section 24 without disassembling it.

[0029] Specifically, the heat exchanger body 41 includes several partitions 43, several pairs of first blocking parts 44, and several pairs of second blocking parts 45. The partitions 43 are stacked along the thickness direction of the partitions 43. Each pair of first blocking parts 44 is located between a pair of adjacent partitions 43, and each pair of second blocking parts 45 is located between a pair of adjacent partitions 43. The partitions 43, the blocking parts, and the second blocking parts 45 are all connected. The length direction of the first blocking parts 44 is perpendicular to the length direction of the second blocking parts 45. Each pair of first blocking parts 44 and a pair of adjacent partitions 43 form a first heat exchange channel 411, and each pair of second blocking parts 45 and a pair of adjacent partitions 43 form a second heat exchange channel 412. The several first heat exchange channels 411 and several second heat exchange channels 412 are arranged alternately.

[0030] Furthermore, several partitions 43 are brazed to several pairs of first blocking parts 44, and several partitions 43 are brazed to several pairs of second blocking parts 45.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cleanroom HVAC supply and exhaust waste heat recovery heat exchanger (4), characterized in that: The heat exchanger includes a heat exchanger body (41), which has a first heat exchange channel (411) and a second heat exchange channel (412). The first heat exchange channel (411) and the second heat exchange channel (412) are isolated from each other. The fluid in the first heat exchange channel (411) is used to exchange heat with the fluid in the second heat exchange channel (412). The clean room HVAC supply and exhaust waste heat recovery heat exchanger (4) includes an air inlet filter (24), which is connected to the heat exchanger body (41) and covers the first heat exchange channel (411). The heat exchanger body (41) is connected to a first shaft (42), which is used to rotatably connect to the body (1). The axis of the heat exchanger body (41) coincides with the axis of the first shaft (42). The heat exchanger body (41) is connected to a drive assembly (5) for driving the heat exchanger body (41) to rotate.

2. The clean room heating, ventilation, and exhaust heat recovery heat exchanger (4) according to claim 1, characterized in that: The first heat exchange channel (411) has a first inlet (4111) and a first outlet (4112), the second heat exchange channel (412) has a second inlet (4121) and a second outlet (4122), and the air inlet filter (24) covers the first outlet (4112).

3. The clean room heating, ventilation and air conditioning exhaust heat recovery heat exchanger (4) according to claim 2, characterized in that: A plane perpendicular to the axis of the first shaft (42) is defined as a cross section. The heat exchanger body (41) is square in the shape of the cross section. The drive assembly (5) can drive the heat exchanger body (41) to rotate 90 degrees counterclockwise.

4. The cleanroom HVAC supply and exhaust waste heat recovery heat exchanger (4) according to any one of claims 2-3, characterized in that: The heat exchanger body (41) has a first sidewall (413), a second sidewall (414), a third sidewall (415), and a fourth sidewall (416). In a clockwise direction, the first sidewall (413), the second sidewall (414), the third sidewall (415), and the fourth sidewall (416) are arranged sequentially around the rotation axis of the heat exchanger body (41). The first sidewall (413) has a first inlet (4111), the second sidewall (414) has a second inlet (4121), the third sidewall (415) has a first outlet (4112), and the fourth sidewall (416) has a second outlet (4122).

5. The cleanroom HVAC waste heat recovery heat exchanger (4) according to claim 4, characterized in that: The drive assembly (5) includes a drive motor (51), which is fixedly connected to the body (1), and the output shaft of the drive motor (51) is fixedly connected to the first shaft (42).

6. The cleanroom HVAC waste heat recovery heat exchanger (4) according to claim 2, characterized in that: The main body (1) has an air supply duct (2) and an exhaust duct (3). The air supply duct (2) includes a first sub-air supply duct (211) and a second sub-air supply duct (212), which are located on both sides of the heat exchanger body (41). The exhaust duct (3) includes a first sub-exhaust duct (311) and a second sub-exhaust duct (312), which are located on both sides of the heat exchanger body (41). The feature is that the cleanroom HVAC waste heat recovery heat exchanger (4) has a first state and a second state. In the first state, the first sub-air supply duct (211) and the second sub-exhaust duct (212) are located on both sides of the heat exchanger body (41). An inlet (4111) is connected to the first sub-supply air duct (211), the first outlet (4112) is connected to the second sub-supply air duct (212), the second inlet (4121) is connected to the first sub-exhaust air duct (311), and the second outlet (4122) is connected to the second sub-exhaust air duct (312). In the first state, the first outlet (4112) is connected to the first sub-exhaust air duct (311), the first inlet (4111) is connected to the second sub-exhaust air duct (312), the second inlet (4121) is connected to the first sub-supply air duct (211), and the second outlet (4122) is connected to the second sub-supply air duct (212).

7. The cleanroom HVAC waste heat recovery heat exchanger (4) according to claim 1, characterized in that: The heat exchanger body (41) includes a plurality of partitions (43), a plurality of pairs of first blocking parts (44), and a plurality of pairs of second blocking parts (45). The plurality of partitions (43) are stacked along the thickness direction of the partitions (43). A pair of first blocking parts (44) are located between a pair of adjacent partitions (43), and a pair of second blocking parts (45) are located between a pair of adjacent partitions (43). The partitions (43), the blocking parts, and the second blocking parts (45) are all connected. The length direction of the first blocking part (44) is perpendicular to the length direction of the second blocking part (45). A pair of first blocking parts (44) and a pair of adjacent partitions (43) form a first heat exchange channel (411), and a pair of second blocking parts (45) and a pair of adjacent partitions (43) form a second heat exchange channel (412). The plurality of first heat exchange channels (411) and the plurality of second heat exchange channels (412) are staggered.

8. The cleanroom HVAC waste heat recovery heat exchanger (4) according to claim 7, characterized in that: Several of the partitions (43) are brazed to several pairs of the first blocking parts (44), and several of the partitions (43) are brazed to several pairs of the second blocking parts (45).

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