Fresh air handling unit heat recovery device for heat pipe heat exchange

Abstract

According to the technical scheme, the fresh air handling unit heat recovery device comprises a fresh air handling unit box, a fresh air opening is formed in one side of the fresh air handling unit box, an air supply opening is formed in the other side of the fresh air handling unit box, an air return opening is formed in one side of the fresh air handling unit box, and an air outlet is formed in the other side of the fresh air handling unit box. An exhaust outlet is formed in the other side of the fresh air handling unit box, and a heat pipe heat exchanger is fixedly installed on the bottom face in the fresh air handling unit box; the filtering assembly is arranged on the inner bottom face of the fresh air handling unit box and used for filtering dust particles in air, and through the arrangement of the access hole, after filter screens in the first filter screen frame and the second filter screen frame are used for a long time, a worker can pull out a connecting pull block through the access hole, and the dust particles in the filter screen can be filtered out. And the first filter screen frame and the second filter screen frame are detached from the fresh air handling unit box, so that the filter screens are convenient to clean, and the circulation rate of airflow is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air units, and particularly to a heat recovery device for a fresh air unit with heat pipe heat exchange. Background Art

[0002] The fresh air ventilator is designed and developed based on the principle that when air is supplied on one side and drawn on the other side in a sealed room, a "fresh air flow field" will be formed in the room; it relies on mechanical air supply and air drawing to force a fresh air flow field to be formed in the system, and it is a new type of environmental protection electrical appliance that always keeps the indoor air clean and fresh; this independent indoor air replacement and purification circulation system can, while exhausting the polluted air in the room, input natural fresh air, and the fresh air input into the room is first subjected to multiple treatments such as filtration, sterilization, heating, and oxygenation.

[0003] According to the Chinese patent with the application number: CN201520772761.9, there is disclosed a heat recovery unit with a cooling device, including a box body. The interior of the box body is divided into an exhaust air chamber and a fresh air chamber by an intermediate partition. It also includes a three-dimensional heat pipe heat exchanger. The three-dimensional heat pipe heat exchanger passes through the intermediate partition. A condensate pan is provided at its bottom, and a drain port is provided on one side of the condensate pan. An initial filter is provided between the part of the three-dimensional heat pipe heat exchanger located in the fresh air chamber and the fresh air inlet. An initial filter and a cooling device are successively provided between the part of the three-dimensional heat pipe heat exchanger located in the exhaust air chamber and the exhaust air inlet. A control unit is provided on the cooling device. The heat recovery unit of the utility model has a simple and reasonable structure. By setting a cooling device in the exhaust air chamber, the temperature difference between indoors and outdoors is increased, and the heat exchange efficiency of heat recovery is improved, so as to achieve the purpose of saving energy consumption.

[0004] At present, a heat recovery unit with a cooling device still has some deficiencies. For example, when the heat recovery device recovers the heat in the air, the dust particles in the air need to be filtered through a filter screen to prevent them from falling onto the fins of the heat recovery device and affecting the heat conduction. However, after the filter screen is used for a long time, there is a lot of dust on the filter screen, which affects the air inlet and outlet rates. The filter screen is installed in the fresh air unit, and it is not convenient for the staff to disassemble, clean, and overhaul. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a heat recovery device for a fresh air unit with heat pipe heat exchange, which solves the problem that when the heat in the air is recovered, the dust particles in the air need to be filtered through a filter screen to prevent them from falling onto the fins of the heat recovery device and affecting the heat conduction. However, after the filter screen is used for a long time, there is a lot of dust on the filter screen, which affects the air inlet and outlet rates. The filter screen is installed in the fresh air unit, and it is not convenient for the staff to disassemble, clean, and overhaul.

[0006] The above technical object of the utility model is achieved by the following technical solutions:

[0007] A heat recovery device for a fresh air unit with heat pipe heat exchange, comprising: a fresh air unit box, a fresh air inlet is arranged on one side of the fresh air unit box, a supply air outlet is arranged on the other side of the fresh air unit box, a return air inlet is opened on one side of the fresh air unit box, an exhaust air outlet is arranged on the other side of the fresh air unit box, and a heat pipe heat exchanger is fixedly installed on the inner bottom surface of the fresh air unit box; a filtering component, which is arranged on the inner bottom surface of the fresh air unit box and is used for filtering dust particles in the air.

[0008] By adopting the above technical solutions, by setting the filtering component, when the fresh air unit box is operating, the medium in the heat pipe heat exchanger senses the temperature and evaporates, reaches the other end, condenses and flows back along the tube core to form a cycle for heat recovery. When the air flow passes through the heat pipe heat exchanger, the filtering component filters the dust and impurities in the air flow to prevent them from falling on the heat pipe heat exchanger and affecting the conversion of the heat pipe heat exchanger.

[0009] Preferably, the filtering component includes: a first filter screen frame, which is arranged inside the fresh air unit box near the bottom end of the heat pipe heat exchanger, a second filter screen frame is arranged inside the fresh air unit box near the top end of the heat pipe heat exchanger, filter screens are arranged inside both the first filter screen frame and the second filter screen frame, maintenance openings are opened on both the top surface and the bottom surface of the fresh air unit box, and connecting pull blocks are fixedly installed on the bottom surface of the first filter screen frame and the top surface of the second filter screen frame.

[0010] By adopting the above technical solutions, by setting the maintenance openings, when the filter screens inside the first filter screen frame and the second filter screen frame are used for a long time, the staff can pull out the connecting pull blocks through the maintenance openings and remove the first filter screen frame and the second filter screen frame from the fresh air unit box, so as to facilitate the cleaning of the filter screens and is beneficial to ensuring the air flow rate.

[0011] Preferably, guide grooves are opened on both sides of the maintenance opening, guide blocks are fixedly installed on both sides of the first filter screen frame and the second filter screen frame, and the guide blocks are slidably sleeved together with the guide grooves.

[0012] By adopting the above technical solutions, by setting the guide blocks, when the first filter screen frame and the second filter screen frame are placed inside the fresh air unit box, the guide blocks are clamped into the guide grooves to limit the first filter screen frame and the second filter screen frame.

[0013] Preferably, two fixed rubber blocks are in interference fit inside the maintenance opening.

[0014] By adopting the above technical solution, by setting the fixed rubber block, the connecting pull block is fixed to prevent shaking, and at the same time, the inspection opening is sealed to prevent air flow from flowing through the inspection opening.

[0015] Preferably, activated carbon nets are arranged inside both the first filter net frame and the second filter net frame.

[0016] By adopting the above technical solution, by setting the activated carbon net, it is beneficial to filter toxic and harmful substances in the air flow.

[0017] Preferably, a drain pipe is arranged at the bottom surface of the fresh air unit box.

[0018] By adopting the above technical solution, by setting the drain pipe, during the heat conversion process of the heat pipe heat exchanger, when the moisture content of the air flow is relatively high, condensate will form on the surface of the heat pipe heat exchanger. The condensate will cause the inside of the fresh air unit box to be too humid. Through the drain pipe, the condensate is drained, which is beneficial to ensuring the dryness of the fresh air unit.

[0019] In summary, the main beneficial effects of the present utility model are as follows:

[0020] By setting the inspection opening, when the filter nets inside the first filter net frame and the second filter net frame are used for a long time, the staff can pull out the connecting pull block through the inspection opening and disassemble the first filter net frame and the second filter net frame from the fresh air unit box, so as to facilitate the cleaning of the filter nets and is beneficial to ensuring the air flow rate.

[0021] By setting the fixed rubber block, the connecting pull block is fixed to prevent shaking, and at the same time, the inspection opening is sealed to prevent air flow from flowing through the inspection opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 2 is a vertical cutting structural schematic diagram of the fresh air unit box of the present utility model;

[0024] Figure 3 is a disassembled structural schematic diagram of the connecting pull block of the present utility model;

[0025] Figure 4 is a structural schematic diagram of the guide block of the present utility model.

[0026] Reference numerals: 1, fresh air unit box; 2, fresh air inlet; 3, air supply outlet; 4, air return inlet; 5, air exhaust outlet; 6, heat pipe heat exchanger; 7, first filter net frame; 8, second filter net frame; 9, filter net; 10, inspection opening; 11, connecting pull block; 12, guide groove; 13, guide block; 14, fixed rubber block; 15, activated carbon net; 16, drain pipe. Detailed implementation mode

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Reference Figure 1 、 Figure 2 A fresh air unit heat recovery device with heat pipe heat exchange, comprising: a fresh air unit box 1, a fresh air inlet 2 is arranged on one side of the fresh air unit box 1, a supply air outlet 3 is arranged on the other side of the fresh air unit box 1, a return air inlet 4 is opened on one side of the fresh air unit box 1, a exhaust air outlet 5 is arranged on the other side of the fresh air unit box 1, and a heat pipe heat exchanger 6 is fixedly installed on the inner bottom surface of the fresh air unit box 1; a filtering component, the filtering component is arranged on the inner bottom surface of the fresh air unit box 1 and is used for filtering dust particles in the air. By setting the filtering component, when the fresh air unit box 1 is running, the medium in the heat pipe heat exchanger 6 senses the temperature and evaporates, reaches the other end, condenses and flows back along the pipe core to form a cycle for heat recovery. When the air flow passes through the heat pipe heat exchanger 6, the filtering component filters the dust impurities in the air flow to prevent them from falling on the heat pipe heat exchanger 6 and affecting the conversion of the heat pipe heat exchanger 6. A drain pipe 16 is arranged on the bottom surface of the fresh air unit box 1. By setting the drain pipe 16, when the heat pipe heat exchanger 6 is performing heat conversion, when the moisture content of the air flow is relatively high, condensate will form on the surface of the heat pipe heat exchanger 6, and the condensate will cause the inside of the fresh air unit box 1 to be too humid. Through the drain pipe 16, the condensate is drained, which is beneficial to ensuring the dryness of the fresh air unit.

[0029] Reference Figure 2 、 Figure 3 And Figure 4, the filtering component includes: a first filter frame 7, the first filter frame 7 is arranged inside the fresh air unit box 1 near the bottom end of the heat pipe heat exchanger 6, a second filter frame 8 is arranged inside the fresh air unit box 1 near the top end of the heat pipe heat exchanger 6, filter nets 9 are arranged inside both the first filter frame 7 and the second filter frame 8, maintenance openings 10 are provided on both the top surface and the bottom surface of the fresh air unit box 1, connecting pull blocks 11 are fixedly installed on the bottom surface of the first filter frame 7 and the top surface of the second filter frame 8. By providing the maintenance openings 10, when the filter nets 9 inside the first filter frame 7 and the second filter frame 8 are used for a long time, the staff can pull out the connecting pull blocks 11 through the maintenance openings 10 and remove the first filter frame 7 and the second filter frame 8 from the fresh air unit box 1, so as to facilitate the cleaning of the filter nets 9, which is beneficial to ensuring the air flow rate. Activated carbon nets 15 are arranged inside both the first filter frame 7 and the second filter frame 8. By providing the activated carbon nets 15, it is beneficial to filter toxic and harmful substances in the air flow.

[0030] Reference Figure 3 , Figure 4 , guide grooves 12 are provided on both sides of the maintenance opening 10, guide blocks 13 are fixedly installed on both sides of the first filter frame 7 and the second filter frame 8, and the guide blocks 13 are slidably sleeved together with the guide grooves 12. By providing the guide blocks 13, when the first filter frame 7 and the second filter frame 8 are placed inside the fresh air unit box 1, the guide blocks 13 are snapped into the guide grooves 12 to limit the first filter frame 7 and the second filter frame 8. Two fixed rubber blocks 14 are in interference fit inside the maintenance opening 10. By providing the fixed rubber blocks 14, the connecting pull blocks 11 are fixed to prevent shaking, and at the same time, the maintenance opening 10 is sealed to prevent air flow from flowing through the maintenance opening 10.

[0031] Working principle: Please refer to Figures 1-4 As shown in the figure, during use, when the fresh air unit box 1 is operating, fresh air enters the fresh air unit box 1 through the fresh air inlet 2, indoor air flow enters the upper part of the fresh air unit box 1 through the return air inlet 4, the indoor air flow is evaporated by the medium induction temperature inside the heat pipe heat exchanger 6, reaches the other end and condenses and flows back along the pipe core to form a cycle for heat recovery. The air flow passes through the first filter frame 7 and the second filter frame 8 to filter dust and impurities in the air flow. When the filter net 9 is used for a long time, the staff can remove the fixed rubber blocks 14 at both ends of the maintenance opening 10, pull out the connecting pull blocks 11, and remove the first filter frame 7 and the second filter frame 8 from the fresh air unit box 1, so as to facilitate the cleaning of the filter net 9.

[0032] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat recovery device for a fresh air unit with heat pipe heat exchange, characterized in that, Comprising: A fresh air unit box (1), on one side of the fresh air unit box (1) there is a fresh air inlet (2), on the other side of the fresh air unit box (1) there is an air supply outlet (3), on one side of the fresh air unit box (1) there is an air return inlet (4) opened, on the other side of the fresh air unit box (1) there is an air exhaust outlet (5), and on the inner bottom surface of the fresh air unit box (1) there is fixedly installed a heat pipe heat exchanger (6); A filtering assembly, the filtering assembly is arranged on the inner bottom surface of the fresh air unit box (1) and is used for filtering dust particles in the air.

2. The heat recovery device of the fresh air unit with heat pipe heat exchange according to claim 1, characterized in that The filtering assembly includes: A first filter screen frame (7), the first filter screen frame (7) is arranged inside the fresh air unit box (1) near the bottom end of the heat pipe heat exchanger (6), a second filter screen frame (8) is arranged inside the fresh air unit box (1) near the top end of the heat pipe heat exchanger (6), inside both the first filter screen frame (7) and the second filter screen frame (8) there is a filter screen (9), on the top surface and the bottom surface of the fresh air unit box (1) there are both opened maintenance openings (10), and on the bottom surface of the first filter screen frame (7) and the top surface of the second filter screen frame (8) there are both fixedly installed connecting pull blocks (11).

3. The heat recovery device of the fresh air unit with heat pipe heat exchange according to claim 2, characterized in that On both sides of the maintenance opening (10) there are opened guiding grooves (12), on both sides of the first filter screen frame (7) and the second filter screen frame (8) there are both fixedly installed guiding blocks (13), and the guiding blocks (13) are slidably sleeved together with the guiding grooves (12).

4. A heat recovery device for a fresh air unit with heat pipe heat exchange according to claim 2, characterized in that, Inside the maintenance opening (10) there are two fixed rubber blocks (14) in interference fit.

5. A heat recovery device for a fresh air unit with heat pipe heat exchange according to claim 2, characterized in that, Inside both the first filter screen frame (7) and the second filter screen frame (8) there is an activated carbon net (15).

6. The heat recovery device for a fresh air unit with heat pipe heat exchange according to claim 1, characterized in that On the bottom surface of the fresh air unit box (1) there is a drain pipe (16).

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