Heat recovery device of heating ventilation air conditioning system

Abstract

The utility model relates to the technical field of heating ventilation systems, and discloses a heating ventilation air conditioning system heat recovery device which comprises a recovery box, a base plate is installed on the outer surface of the recovery box, a supporting rod is fixedly connected to the outer surface of the base plate, a hemispherical bottom cover is fixedly connected to one end of the supporting rod, and a sleeve is fixedly connected to the interior of the hemispherical bottom cover. The outer surface of the sleeve is fixedly connected with a raw water inlet pipe, and the outer surface of the hemispherical bottom cover is fixedly connected with a water outlet pipe. According to the utility model, the reverse osmosis filter element is utilized to pretreat water entering the recycling box, raw water enters the reverse osmosis filter element through the raw water access pipe and the sleeve, and flows into the tank body and then enters the recycling box after most calcium and magnesium ions are filtered out under the pumping pressure, and as the calcium and magnesium ions in the water are greatly reduced, when the water in the recycling box exchanges heat with the spiral pipe, the water in the recycling box can be recycled. As main components for forming scale are lacked, the scale is effectively prevented from being formed on the outer surface of the spiral pipe, and the heat exchange efficiency of the spiral pipe is kept for a long time.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning system technology, specifically to a heat recovery device for a heating, ventilation and air conditioning system. Background Technology

[0002] In modern building heating, ventilation, and air conditioning systems, heat recovery devices play a crucial role in improving energy efficiency and reducing operating costs.

[0003] According to a search, Chinese patent document, publication number CN215724034U, discloses a heat recovery device for a heating, ventilation, and air conditioning system. By installing a fan, suction pipe, and supply pipe, hot air can be drawn into an insulated box for storage. When the pressure of the hot air increases within the insulated box, a pressure-reducing valve can reduce the pressure. Using a fixing mechanism, pressing a pressure plate causes a second spring and a locking rod to move up and down. The locking rod then moves a locking block into a groove, allowing for the disassembly of the air hood. This facilitates easy removal when the hot air hood needs replacement.

[0004] However, in actual use, the aforementioned heat recovery device suffers from impurities in tap water. After prolonged operation, these impurities adhere to the waste heat recovery pipes, reducing the heat exchange efficiency. Therefore, improvements are needed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a heat recovery device for HVAC systems, which has the advantages of filtering the water used for heat exchange, thereby preventing impurities in tap water from adhering to the walls of the waste heat recovery pipe and avoiding a reduction in heat exchange efficiency, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a heat recovery device for a heating, ventilation, and air conditioning system, comprising a recovery box, a base plate mounted on the outer surface of the recovery box, a support rod fixedly connected to the outer surface of the base plate, a hemispherical bottom cover fixedly connected to one end of the support rod, a sleeve fixedly connected inside the hemispherical bottom cover, a raw water inlet pipe fixedly connected to the outer surface of the sleeve, an outlet pipe fixedly connected to the outer surface of the hemispherical bottom cover, a reverse osmosis filter element inserted into the top of the sleeve, an end cap mounted on the top of the reverse osmosis filter element, a connecting rod threadedly connected to the inner bottom surface of the hemispherical bottom cover, a locking knob threadedly connected to the outer surface of the connecting rod, a tank body connected to the top of the hemispherical bottom cover, a clamp connecting the hemispherical bottom cover and the tank body, a bend pipe connected to one end of the outlet pipe via a flange, and an inlet pipe connected to one end of the bend pipe via a flange.

[0009] Preferably, a waste heat inlet pipe and a discharge pipe are fixedly connected to the outer surface of the recycling bin, and a spiral pipe is fixedly connected between the waste heat inlet pipe and the discharge pipe. A plurality of fins arranged at equal intervals are fixedly connected to the outer surface of the spiral pipe.

[0010] The above technical solution involves connecting the waste heat generated by HVAC to a waste heat inlet pipe. After water is injected into the recovery tank, the waste heat inlet pipe introduces hot air into a spiral tube, where heat exchange occurs between the spiral tube and the water inside the recovery tank. By setting multiple equally spaced fins on the outer surface of the spiral tube, the heat exchange area is increased, thereby improving the heat exchange efficiency. After heat exchange, the hot air is cooled and finally discharged from the outlet pipe. The water temperature inside the recovery tank rises after heat exchange and becomes usable, and hot water can be discharged through the hot water outlet pipe.

[0011] Preferably, the raw water inlet pipe is connected to the sleeve, and the end of the raw water inlet pipe away from the sleeve extends out from the inside of the hemispherical bottom cover.

[0012] The above technical solution involves connecting the raw water inlet pipe to the tap water pipeline, pumping tap water into the raw water inlet pipe, and then the tap water rises into the reverse osmosis filter element. With continuous pumping pressure, the tap water is forced to precipitate out from inside the reverse osmosis filter element and flow into the tank. In this way, the tap water is filtered by the reverse osmosis filter element. The filtered water is discharged from the outlet pipe, then flows through the bend pipe into the inlet pipe, and then into the recovery tank. The filtered water removes most of the calcium and magnesium ions, so that when the water in the recovery tank undergoes heat exchange, it is less likely to produce scale that adheres to the wall of the spiral tube, thus maintaining the efficiency of heat exchange with water after waste heat recovery for a long time.

[0013] Preferably, the water inlet pipe is connected to the outer surface of the recycling tank, and a hot water outlet pipe is also fixedly connected to the outer surface of the recycling tank.

[0014] Preferably, the clamp consists of two semicircular clamps, which are hinged to each other and connected by a locking bolt.

[0015] With the above technical solution, a sealing gasket is provided at the edge of the upper surface of the hemispherical bottom cover for sealing contact with the bottom of the tank. The locking bolts provided by the clamp can tightly connect the hemispherical bottom cover and the tank. Conversely, when it is necessary to clean the reverse osmosis filter element, the clamp can be quickly removed to separate the hemispherical bottom cover and the tank.

[0016] Preferably, a sleeve is inserted into the bottom end of the reverse osmosis filter element, and a sealing ring is provided on the outer surface of the sleeve. The connecting rod is inserted into the interior of the reverse osmosis filter element, and a pressure gauge is installed on the top of the tank.

[0017] With the above technical solution, by rotating the locking knob to remove the connecting rod, the reverse osmosis filter element along with the end cap can be lifted up, making it convenient and quick to replace or clean the reverse osmosis filter element 8.

[0018] Compared with the prior art, this utility model provides a heat recovery device for a heating, ventilation and air conditioning system, which has the following beneficial effects:

[0019] 1. This utility model utilizes a reverse osmosis filter cartridge to pre-treat the water entering the recovery tank. Raw water enters the reverse osmosis filter cartridge through the raw water inlet pipe and sleeve. Under pump pressure, most of the calcium and magnesium ions are filtered out before flowing into the tank and then into the recovery tank. Due to the significant reduction in calcium and magnesium ions in the water, when the water in the recovery tank exchanges heat with the spiral tube, the lack of the main components that form scale effectively avoids the formation of scale on the outer surface of the spiral tube. This maintains the heat exchange efficiency of the spiral tube for a long time, ensuring the stable operation of the waste heat recovery and water heat exchange process of the HVAC system, and reducing the equipment maintenance costs and heat exchange efficiency reduction caused by scale accumulation.

[0020] 2. This utility model uses a clamp to connect the hemispherical bottom cover to the tank body, which facilitates disassembly. The bottom surface of the hemispherical bottom cover is threaded with a connecting rod that passes through the reverse osmosis filter element, and the outer surface has a locking knob. When it is necessary to clean or replace the reverse osmosis filter element, first remove the clamp to separate the hemispherical bottom cover from the tank body, and then turn the locking knob to remove it from the connecting rod. The reverse osmosis filter element and the end cover can then be easily removed together. This design greatly simplifies the reverse osmosis filter element maintenance operation process and shortens the time for replacing or cleaning the reverse osmosis filter element. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of the structure of the recycling bin of this utility model;

[0023] Figure 3 This is a partially exploded view of the structure of this utility model;

[0024] Figure 4 This is a partial side view of the structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the interior of the hemispherical bottom cover of this utility model.

[0026] The components include: 1. Recycling bin; 2. Base plate; 3. Support rod; 4. Hemispherical bottom cover; 5. Sleeve; 6. Raw water inlet pipe; 7. Outlet pipe; 8. Reverse osmosis filter element; 9. End cap; 10. Connecting rod; 11. Locking knob; 12. Tank body; 13. Clamp; 14. Bend; 15. Inlet pipe; 16. Waste heat inlet pipe; 17. Discharge pipe; 18. Spiral pipe; 19. Hot water outlet pipe; 20. Pressure gauge. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 A heat recovery device for a heating, ventilation, and air conditioning system includes a recovery box 1. A base plate 2 is mounted on the outer surface of the recovery box 1. A support rod 3 is fixedly connected to the outer surface of the base plate 2. A hemispherical bottom cover 4 is fixedly connected to one end of the support rod 3. A sleeve 5 is fixedly connected inside the hemispherical bottom cover 4. A raw water inlet pipe 6 is fixedly connected to the outer surface of the sleeve 5. A water outlet pipe 7 is fixedly connected to the outer surface of the hemispherical bottom cover 4. A reverse osmosis filter element 8 is inserted into the top of the sleeve 5. An end cap 9 is installed on the top of the reverse osmosis filter element 8. A connecting rod 10 is threadedly connected to the bottom surface of the hemispherical bottom cover 4. A locking knob 11 is threadedly connected to the outer surface of the connecting rod 10. A tank body 12 is connected to the top of the hemispherical bottom cover 4. A clamp 13 is connected between the hemispherical bottom cover 4 and the tank body 12. A bend 14 is connected to one end of the water outlet pipe 7 through a flange. A water inlet pipe 15 is connected to one end of the bend 14 through a flange.

[0029] Specifically, a waste heat inlet pipe 16 and an outlet pipe 17 are fixedly connected to the outer surface of the recovery tank 1. A spiral tube 18 is fixedly connected between the waste heat inlet pipe 16 and the outlet pipe 17. Multiple fins arranged at equal intervals are fixedly connected to the outer surface of the spiral tube 18. The advantage is that by connecting the waste heat generated by the HVAC system to the waste heat inlet pipe 16 through a pipeline, when water is injected into the recovery tank 1, the waste heat inlet pipe 16 introduces hot air into the spiral tube 18. Heat exchange occurs between the spiral tube 18 and the water inside the recovery tank 1. Furthermore, by setting multiple fins arranged at equal intervals on the outer surface of the spiral tube 18, the heat exchange area can be increased, thereby improving the heat exchange efficiency. After heat exchange, the hot air is cooled and finally discharged from the outlet pipe 17. After heat exchange, the water temperature inside the recovery tank 1 rises and becomes usable, and hot water can be discharged through the hot water outlet pipe 19.

[0030] Specifically, the raw water inlet pipe 6 is connected to the sleeve 5, and the end of the raw water inlet pipe 6 away from the sleeve 5 extends out from the inside of the hemispherical bottom cover 4. The advantage is that the raw water inlet pipe 6 is connected to the tap water pipe, and the tap water is pumped into the raw water inlet pipe 6. Then the tap water enters the sleeve 5 and rises into the reverse osmosis filter element 8. With the continuous pumping pressure, the tap water is forced to precipitate out from the reverse osmosis filter element 8 and flow into the tank 12. In this way, the tap water can be filtered by the reverse osmosis filter element 8. The filtered water is discharged from the outlet pipe 7, then flows through the bend pipe 14 into the inlet pipe 15, and then into the recovery tank 1. The filtered water removes most of the calcium and magnesium ions, so when the water in the recovery tank 1 is subjected to heat exchange, it is not easy for scale to adhere to the pipe wall of the spiral tube 18, thus maintaining the efficiency of heat exchange with water after waste heat recovery for a long time.

[0031] Specifically, the water inlet pipe 15 is connected to the outer surface of the recycling tank 1, and the outer surface of the recycling tank 1 is also fixedly connected to the hot water outlet pipe 19.

[0032] Specifically, the clamp 13 consists of two semi-circular clamps that are hinged together and connected by a locking bolt. The advantage is that a sealing gasket is provided at the edge of the upper surface of the hemispherical bottom cover 4 for sealing contact with the bottom of the tank body 12. The locking bolt, which works in conjunction with the clamp 13, can tightly connect the hemispherical bottom cover 4 and the tank body 12. Conversely, when cleaning the reverse osmosis filter element 8, the clamp 13 can be quickly disassembled to separate the hemispherical bottom cover 4 from the tank body 12.

[0033] Specifically, a sleeve 5 is inserted into the bottom of the reverse osmosis filter element 8, and a sealing ring is provided on the outer surface of the sleeve 5. The connecting rod 10 is inserted into the interior of the reverse osmosis filter element 8, and a pressure gauge 20 is installed on the top of the tank 12. The advantage is that by turning the locking knob 11 to remove the connecting rod 10, the reverse osmosis filter element 8 can be lifted together with the end cap 9, which makes it convenient and quick to replace or clean the reverse osmosis filter element 8.

[0034] In use, the waste heat generated by the HVAC system is first connected to the waste heat inlet pipe 16 via a pipeline. Then, it is connected to the tap water pipeline via the raw water inlet pipe 6. A water pump delivers tap water into the raw water inlet pipe 6, allowing it to rise into the casing 5 and enter the reverse osmosis filter element 8. Under continuous pumping pressure, the tap water precipitates from inside the reverse osmosis filter element 8 and flows into the tank 12. The filtered water then flows through the outlet pipe 7, the bend pipe 14, and the inlet pipe 15 into the recovery tank 1. Then, the waste heat inlet pipe 16... Hot air is introduced into the spiral tube 18 and exchanges heat with the water in the recovery tank 1. After the hot air is cooled by the heat exchange, it is discharged from the discharge pipe 17. The water in the recovery tank 1 with the increased water temperature can be discharged and used through the hot water outlet pipe 19. When it is necessary to clean or replace the reverse osmosis filter element 8, the hemispherical bottom cover 4 and the tank body 12 are separated by quickly disassembling the clamp 13. Then, the locking knob 11 is turned to remove it from the connecting rod 10. The reverse osmosis filter element 8 is picked up together with the end cover 9. Then the reverse osmosis filter element 8 can be cleaned or replaced.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat recovery device for a heating, ventilation, and air conditioning system, comprising a recovery box (1), characterized in that: The outer surface of the recycling bin (1) is fitted with a base plate (2), and a support rod (3) is fixedly connected to the outer surface of the base plate (2). One end of the support rod (3) is fixedly connected to a hemispherical bottom cover (4). A sleeve (5) is fixedly connected inside the hemispherical bottom cover (4). A raw water inlet pipe (6) is fixedly connected to the outer surface of the sleeve (5). A water outlet pipe (7) is fixedly connected to the outer surface of the hemispherical bottom cover (4). A reverse osmosis filter element (8) is inserted into the top of the sleeve (5). 8) is fitted with an end cap (9) on top. The inner bottom surface of the hemispherical bottom cap (4) is threaded with a connecting rod (10). The outer surface of the connecting rod (10) is threaded with a locking knob (11). The top of the hemispherical bottom cap (4) is connected to a tank body (12). A clamp (13) is connected between the hemispherical bottom cap (4) and the tank body (12). One end of the water outlet pipe (7) is connected to a bend pipe (14) through a flange. One end of the bend pipe (14) is connected to a water inlet pipe (15) through a flange.

2. The heat recovery device for a heating, ventilation, and air conditioning system according to claim 1, characterized in that: The outer surface of the recycling bin (1) is fixedly connected to a waste heat inlet pipe (16) and a discharge pipe (17). A spiral pipe (18) is fixedly connected between the waste heat inlet pipe (16) and the discharge pipe (17). A plurality of fins are fixedly connected to the outer surface of the spiral pipe (18).

3. The heat recovery device for a heating, ventilation, and air conditioning system according to claim 1, characterized in that: The raw water inlet pipe (6) is connected to the sleeve (5), and the end of the raw water inlet pipe (6) away from the sleeve (5) extends out from the inside of the hemispherical bottom cover (4).

4. The heat recovery device for a heating, ventilation, and air conditioning system according to claim 1, characterized in that: The water inlet pipe (15) is connected to the outer surface of the recycling tank (1), and the outer surface of the recycling tank (1) is also fixedly connected to a hot water outlet pipe (19).

5. A heat recovery device for a heating, ventilation, and air conditioning system according to claim 1, characterized in that: The clamp (13) consists of two semicircular clamps, which are hinged to each other and connected by a locking bolt.

6. A heat recovery device for a heating, ventilation, and air conditioning system according to claim 1, characterized in that: The bottom end of the reverse osmosis filter element (8) is inserted into the sleeve (5), and the outer surface of the sleeve (5) is provided with a sealing ring. The connecting rod (10) is inserted into the interior of the reverse osmosis filter element (8), and the pressure gauge (20) is installed on the top of the tank (12).

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