An energy-saving HVAC circulating water device

Abstract

This utility model discloses an energy-saving HVAC circulating water device, relating to the technical field of HVAC. The device includes a base frame, a heat exchanger, a mixing tank, a first circulating pump, and a second circulating pump. The heat exchanger, mixing tank, and circulating pumps are fixedly mounted on the base frame. The inlet of the first circulating pump is connected to the cold water outlet of the heat exchanger. A filter assembly is installed at one end of the base frame. The filter assembly includes a filter box, inside which a filter cylinder is installed. A filter screen is located in the middle of the filter cylinder. A rotating shaft is rotatably mounted inside the filter box. Connecting rods arranged side-by-side are fixedly mounted on the outer side of the rotating shaft. A cleaning rod is fixedly mounted at the end of the connecting rods away from the rotating shaft. A motor controls the rotating shaft to drive the connecting rods to rotate, which in turn drives the cleaning rods to rotate. This causes the bristles to clean impurities on the filter screen, and the impurities are carried away by water and discharged through a drain pipe. This avoids impurities adhering to the screen and becoming difficult to clean, thereby improving the cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning (HVAC) technology, specifically to an energy-saving HVAC circulating water device. Background Technology

[0002] HVAC includes three aspects: heating, ventilation, and air conditioning. Through technological upgrades, system optimization, and intelligent control, energy consumption can be reduced while ensuring comfort, which can directly reduce carbon emissions. Heating generally involves releasing heat into the room through hot water to maintain a comfortable temperature in winter. When the hot water returns, a circulation device is needed for heat exchange.

[0003] Before the circulating device exchanges heat with the return water, the channel needs to be filtered. However, after a long period of filtration, the filter screen is prone to clogging, which leads to a decrease in flow rate and affects normal use. It is inconvenient to disassemble and clean the filter screen, and it also requires stopping the operation of the equipment, which affects normal heating. Utility Model Content

[0004] To address the problems of inconvenient filter cleaning and the impact of equipment shutdown on heating, the purpose of this utility model is to provide an energy-saving HVAC circulating water device.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an energy-saving HVAC circulating water device, comprising a base frame, a heat exchanger, a mixing tank, a circulating pump one, and a circulating pump two. The heat exchanger, the mixing tank, the circulating pump one, and the circulating pump two are fixedly installed on the base frame. The inlet end of the circulating pump one is connected to the cold water outlet end of the heat exchanger. A filter assembly is provided at one end of the base frame. A three-way connecting pipe is provided between the mixing tank, the heat exchanger, and the circulating pump two. A proportional regulating valve is provided at the end of the three-way connecting pipe near the circulating pump two to control the ratio of low-temperature secondary water from the heat exchanger to high-temperature primary water fed into the mixing tank by the circulating pump two.

[0006] Preferably, the filtration assembly includes a filter box, which is fixedly installed at one end of the base frame. A water outlet pipe is fixedly provided on the outside of the filter box and is fixedly connected to the inlet of the circulating pump. A filter cylinder is installed inside the filter box, and a filter screen is provided in the middle of the filter cylinder. A rotating shaft is rotatably installed inside the filter box. Parallel connecting rods are fixedly provided on the outside of the rotating shaft. A cleaning rod is fixedly provided at the end of each connecting rod away from the rotating shaft. A motor is fixedly provided on the outside of the filter box, and the end of the motor's output shaft is fixedly connected to one end of the rotating shaft. The motor is electrically connected to the filter box. The machine provides power for the rotation of the shaft. A brush is fixedly mounted on the cleaning rod, with one side of the brush adhering to the inner wall of the filter screen. The brush effectively cleans impurities adhering to the mesh of the filter screen. A water inlet pipe is fixedly mounted at one end of the filter box, and one end of the water inlet pipe is connected to the filter cylinder. The water inlet pipe is also connected to the return water pipe of the HVAC system. A drain pipe is fixedly installed through one end of the filter box, and one end of the drain pipe is fixedly installed through one end of the filter cylinder. Impurities inside the filter cylinder can be discharged through the drain pipe. A solenoid valve is installed on the drain pipe, and a solenoid valve is installed on the water outlet pipe.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] The motor controls the rotating shaft to drive the connecting rod to rotate, which in turn drives the cleaning rod to rotate. This allows the bristles to clean the impurities on the filter screen, and the impurities are carried away by water and discharged through the drain pipe. This avoids impurities adhering to the filter screen and becoming difficult to clean, thereby improving the cleaning effect. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the filter assembly structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1. Base frame; 2. Filter assembly; 21. Filter box; 22. Filter cylinder; 23. Filter screen; 24. Rotating shaft; 25. Connecting rod; 26. Cleaning rod; 27. Brush bristles; 28. Drain pipe; 29. ​​Motor; 210. Inlet pipe; 211. Solenoid valve one; 212. Solenoid valve two; 213. Outlet pipe; 3. Heat exchanger; 4. Mixing tank; 5. Circulation pump one; 6. Circulation pump two; 7. Three-way connecting pipe. Detailed Implementation

[0014] 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.

[0015] Example: Figure 1-3 As shown, this utility model provides an energy-saving HVAC circulating water device, including a base frame 1, a heat exchanger 3, a mixing tank 4, a circulating pump 5 and a circulating pump 6. The heat exchanger 3, the mixing tank 4, the circulating pump 5 and the circulating pump 6 are fixedly installed on the base frame 1. The inlet end of the circulating pump 5 is connected to the cold water outlet end of the heat exchanger 3. A filter assembly 2 is provided at one end of the base frame 1. A three-way connecting pipe 7 is provided between the mixing tank 4, the heat exchanger 3 and the circulating pump 6. A proportional regulating valve is provided at the end of the three-way connecting pipe 7 near the circulating pump 6 to control the ratio of the low-temperature secondary water of the heat exchanger 3 to the high-temperature primary water sent by the circulating pump 6 into the mixing tank 4.

[0016] The filter assembly 2 includes a filter box 21, which is fixedly installed at one end of the base frame 1. A water outlet pipe 213 is fixedly installed on the outside of the filter box 21 and is fixedly connected to the inlet of the circulating pump 5. A filter cylinder 22 is installed inside the filter box 21, and a filter screen 23 is located in the middle of the filter cylinder 22. A rotating shaft 24 is rotatably installed inside the filter box 21. Parallel connecting rods 25 are fixedly installed on the outside of the rotating shaft 24. A cleaning rod 26 is fixedly installed at the end of the connecting rod 25 away from the rotating shaft 24. Rotation of the rotating shaft 24 drives the connecting rods 25 to rotate, which in turn drives the cleaning rod 26 to rotate, causing the bristles 27 to clean the impurities on the filter screen 23. This facilitates the cleaning of impurities adhering to the filter screen 23. A motor 29 is fixedly installed on the outside of the filter box 21. The end of the output shaft of the motor 29 is fixedly connected to one end of the rotating shaft 24. The motor 29 can power the rotating shaft 24. The shaft 24 provides power for rotation. A brush 27 is fixedly installed on the cleaning rod 26. One side of the brush 27 is in contact with the inner wall of the filter screen 23. The brush 27 can effectively clean the impurities adhering to the mesh of the filter screen 23. A water inlet pipe 210 is fixedly installed at one end of the filter box 21. One end of the water inlet pipe 210 is connected to the filter cylinder 22. The water inlet pipe 210 is connected to the return water pipe of the HVAC system. The water inlet pipe 210 can facilitate the return water to enter the filter box 21. A drain pipe 28 is fixedly inserted through one end of the filter box 21. One end of the drain pipe 28 is fixedly inserted through one end of the filter cylinder 22. Impurities in the filter cylinder 22 can be discharged through the drain pipe 28. A solenoid valve 1 211 is installed on the drain pipe 28. A solenoid valve 212 is installed on the outlet pipe 213. The opening and closing of the drain pipe 28 can be easily controlled by the solenoid valve 1 211. The opening and closing of the outlet pipe 213 can be easily controlled by the solenoid valve 212.

[0017] Working principle: First, the return water pipe of the HVAC system sends the return water into the inlet pipe 210, and then into the filter box 21 through the inlet pipe 210. The return water enters the filter cylinder 22, where the impurities in the filter screen 23 are filtered out, and then discharged from the outlet pipe 213. The return water enters the circulation pump 5, which sends the return water into the heat exchanger 3 for heat exchange before being discharged and entering the inlet pipe of the HVAC system. At the same time, the low-temperature secondary water in the heat exchanger 3, after heat exchange, is sent into the mixing tank 4 through the three-way connecting pipe 7. Simultaneously, the circulation pump 6 is started, which sends the high-temperature primary water into the mixing tank 4 through the three-way connecting pipe 7. The ratio of the low-temperature secondary water in the heat exchanger 3 to the high-temperature primary water sent into the mixing tank 4 by the circulation pump 6 is controlled by the proportional regulating valve, thereby reducing the heat exchange temperature difference loss and improving the heat exchange efficiency.

[0018] When the filter screen 23 becomes clogged with too many impurities, solenoid valve 212 closes and solenoid valve 211 opens, simultaneously starting motor 29. Motor 29 then starts working, and the end of the output shaft of motor 29 drives the rotating shaft 24 to rotate. The rotating shaft 24 drives the connecting rod 25 to rotate, and the connecting rod 25 drives the cleaning rod 26 to rotate, causing the bristles 27 to clean the impurities on the filter screen 23. At the same time, water continuously enters through the inlet pipe 210, and the water carrying impurities is discharged from the drain pipe 28. This facilitates the cleaning of impurities from the filter screen 23. After the impurities are discharged, solenoid valve 211 closes and solenoid valve 212 opens, and the filtration and return of water continues.

[0019] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0020] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An energy-saving heating and circulating water device, comprising a base frame (1), a heat exchanger (3), a mixed water tank (4), a circulating pump one (5) and a circulating pump two (6), characterized in that: The heat exchanger (3), mixing tank (4), circulating pump one (5) and circulating pump two (6) are fixedly installed on the base frame (1). The inlet of the circulating pump one (5) is connected to the cold water outlet of the heat exchanger (3). A filter assembly (2) is provided at one end of the base frame (1). The filter assembly (2) includes a filter box (21), which is fixedly installed at one end of the base frame (1). A water outlet pipe (213) is fixedly provided on the outside of the filter box (21). The water outlet pipe (213) is fixedly connected to the water inlet of the circulating pump (5). A filter cylinder (22) is installed inside the filter box (21). A filter screen (23) is provided in the middle of the filter cylinder (22). A rotating shaft (24) is rotatably installed inside the filter box (21). A connecting rod (25) is fixedly provided on the outside of the rotating shaft (24). A cleaning rod (26) is fixedly provided at the end of the connecting rod (25) away from the rotating shaft (24).

2. The energy-saving heating and circulating water device according to claim 1, wherein A motor (29) is fixedly installed on the outside of the filter box (21), and the end of the output shaft of the motor (29) is fixedly connected to one end of the rotating shaft (24).

3. The energy saving heating and cooling water circulating device of claim 1, wherein, The cleaning rod (26) is fixedly provided with bristles (27), one side of which is attached to the inner wall of the filter screen (23).

4. The energy saving heating and cooling water circulating device of claim 1, wherein, One end of the filter box (21) is fixedly provided with a water inlet pipe (210), and one end of the water inlet pipe (210) is connected to the filter cylinder (22).

5. The energy saving heating and cooling water circulating device of claim 1, wherein, One end of the filter box (21) is fixedly connected to a drain pipe (28), and one end of the drain pipe (28) is fixedly connected to one end of the filter cylinder (22).

6. The energy-saving HVAC circulating water device as described in claim 1, characterized in that, A three-way connecting pipe (7) is provided between the mixing tank (4), the heat exchanger (3) and the second circulating pump (6).

7. The energy saving heating and cooling water circulating device of claim 5, wherein, Solenoid valve 1 (211) is installed on the sewage pipe (28), and solenoid valve 2 (212) is installed on the water outlet pipe (213).

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