Heating ventilation air conditioner capable of automatically saving energy, exchanging heat and controlling temperature

Abstract

The invention discloses an automatic energy-saving heat exchange temperature control heating ventilation air conditioner, relates to the field of energy saving and heat exchange, and effectively solves the problems that a filter screen is easy to block, the hot air recovery efficiency is reduced, the system energy consumption is increased, the replacement is tedious and complicated, an effective hot air flow rate control means is lacked, the hot water making rate is difficult to accurately control, and the system application range is limited. The device comprises a main machine, a pipeline is arranged at the top of the main machine, a filter plate is arranged in the middle of the pipeline, the bottom of the filter plate is connected with the pipeline, a filter screen is arranged in the filter plate, and two limiting rods are arranged at the top of the filter plate; the two limiting rods are symmetrically arranged front and back with the center line of the filter plate as the symmetry axis, the outer side of each limiting rod penetrates through the side wall of the pipeline, a rectangular frame is arranged on the outer side of each limiting rod, an electric telescopic rod is arranged on the right side of each rectangular frame, and the inner side of each electric telescopic rod is connected with the pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving heat exchange, and particularly to a heating, ventilation and air conditioning (HVAC) system with automatic energy-saving heat exchange temperature control. Background Art

[0002] HVAC is an air conditioner with heating, ventilation and air conditioning functions, which can provide the most comfortable environment for human daily life and engineering. Most of the existing HVAC systems do not have a waste heat utilization device, and usually directly discharge the hot air discharged from the air conditioner unit to the outside, resulting in energy waste.

[0003] Among them, the Chinese patent application document with the application number CN202210070048.4 discloses a waste heat recovery device for HVAC, including an installation shell. One side of the installation shell is connected with an installation mechanism. A placement shell is penetrated and sleeved on the side of the installation shell far away from the installation mechanism. A water storage tank is arranged in the placement shell. Exhaust ports are arranged on both side walls of the placement shell. A waste heat utilization mechanism is also arranged in the installation shell. In the present invention, the hot air discharged from the HVAC unit is sucked into the air gathering cylinder by an air extraction fan, and then the heat carried by the hot air and the air in the installation shell are heat-exchanged through a heat dissipation pipe to increase the temperature in the installation shell. The cold water in the water delivery pipe and the high-temperature air in the installation shell are heat-exchanged to heat the water in the water delivery pipe, recovering and utilizing the waste heat carried by the hot air, saving energy and reducing emissions. The water quantity in the water storage tank is controlled by a control valve, and a detachable installation mechanism is set up to facilitate maintenance.

[0004] During the hot air recovery process, the hot air often contains a certain amount of impurities. If these impurities directly enter the heating pipeline, they will cause abrasion to the inside of the pipeline and reduce the service life of the equipment. Therefore, a filter screen is usually set in the hot air recovery system to filter impurities. However, the existing filter screen is extremely prone to clogging during use, which will not only reduce the hot air recovery efficiency, but also increase the system energy consumption. More importantly, the replacement process of the filter screen is often cumbersome and complex, requiring professional personnel to operate.

[0005] In the HVAC system, according to different usage requirements and environmental conditions, it is often necessary to adjust the rate of making hot water, and the rate of making hot water is closely related to the flow rate of hot air. However, most of the existing hot air recovery systems lack effective means for controlling the flow rate of hot air and cannot flexibly adjust the flow rate of hot air according to actual needs, thus making it difficult to accurately control the rate of making hot water. This not only limits the application range of the system, but also reduces the energy utilization efficiency. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a heating, ventilation and air conditioning (HVAC) system with automatic energy-saving heat exchange temperature control, effectively solving the problems of easy clogging of the filter net, reducing the hot air recovery efficiency, increasing the system energy consumption, and the replacement being cumbersome and complex, lacking effective means for controlling the hot air flow rate, being difficult to accurately control the hot water production rate, restricting the application range of the system, and reducing the energy utilization efficiency.

[0007] To achieve the above object, the present invention provides the following technical solutions: The present invention includes a main unit. A pipe is provided at the top of the main unit. A filter plate is provided in the middle of the pipe. The bottom of the filter plate is connected to the pipe. A filter net is provided inside the filter plate. Two limiting rods are provided at the top of the filter plate. The two limiting rods are symmetrically arranged front and back with the center line of the filter plate as the axis of symmetry. The outer sides of the limiting rods penetrate through the side wall of the pipe. A rectangular frame is provided on the outer side of each limiting rod. An electric telescopic rod is provided on the right side of the rectangular frame. The inner side of the electric telescopic rod is connected to the pipe. A displacement sensor is provided inside the rectangular frame; Connection components are provided at the bottoms of the rectangular frames. A connecting sleeve is provided at the bottom of the connection component. A control component is provided inside the connecting sleeve. A right-angle frame is provided inside the control component. The right side of the right-angle frame is slidably connected to the left side of the filter plate. A cleaning plate is provided at the bottom of the connecting sleeve. A temperature control component is provided on the right side inside the pipe.

[0008] Preferably, two brackets are provided at the top of the pipe. The two brackets are symmetrically arranged left and right with the rectangular frame as the axis of symmetry.

[0009] Preferably, two arc-shaped grooves are provided in the middle of the pipe. The two arc-shaped grooves are symmetrically arranged front and back with the center line of the pipe as the axis of symmetry. The arc-shaped grooves are slidably connected to the limiting rods.

[0010] Preferably, the connection component includes an inclined rod. The top of the inclined rod is connected to the bottom of the rectangular frame. A piston rod is provided at the bottom of the inclined rod. The outer side of the piston rod is connected to the connecting sleeve. A spring is provided at the bottom of the piston rod. The bottom of the spring is connected to the connecting sleeve.

[0011] Preferably, the control component includes a connecting pipe. A first solenoid valve and a second solenoid valve are provided at the top of the connecting pipe. The height of the first solenoid valve is higher than that of the second solenoid valve. A rectangular cylinder is jointly provided inside the first solenoid valve and the second solenoid valve. The right side of the rectangular cylinder is connected to the filter plate.

[0012] Preferably, a moving plate is arranged inside the rectangular cylinder. A connecting rod is arranged at the bottom of the moving plate. The connecting rod penetrates through the bottom of the rectangular cylinder. A first rack is arranged at the bottom of the connecting rod. A first gear is meshed with the bottom of the first rack. The outer side of the first gear is rotatably connected to the filter plate.

[0013] Preferably, a large gear is arranged inside the first gear. A small gear is meshed with the bottom of the large gear. A first belt pulley is arranged inside the small gear. The inner side of the first belt pulley is rotatably connected to the filter plate.

[0014] Preferably, a belt is arranged on the outer side of the first belt pulley. A second belt pulley is arranged at the top of the belt. The inner side of the second belt pulley is rotatably connected to the filter plate. The left end of the belt is connected to the right-angle frame.

[0015] Preferably, a metal rod is arranged at the bottom of the connecting sleeve. The inner side of the metal rod is connected to the cleaning plate. An arc-shaped block is arranged at the top of the metal rod. The top of the arc-shaped block is connected to the pipeline. A support plate is arranged at the middle bottom of the pipeline.

[0016] Preferably, the temperature control component includes an electric push rod. The electric push rod is connected to the pipeline. A vertical rod is arranged on the left side of the electric push rod. Two adjusting racks are arranged on the left side of the vertical rod. The two adjusting racks are arranged symmetrically up and down with the center line of the pipeline as the symmetry axis. An adjusting gear is meshed with the inner side of the adjusting rack. A wind guiding plate is arranged inside the adjusting gear. The outer side of the wind guiding plate is rotatably connected to the pipeline.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, through the adjustment of the inclination state of the wind guiding plate, it can be adaptively adjusted according to the size of the air flow discharged by the host. When the air flow increases and the pressure on the filter plate and the filter screen increases, the wind guiding plate can rotate to the horizontal state to increase the opening, facilitating air circulation; when the heat recovery device recognizes that the water temperature is high, the wind guiding plate rotates to the left to reduce the air circulation cross-section, realizing the adjustment of heat output and water temperature control. Under different working conditions, by flexibly adjusting the state of the wind guiding plate, the rationality of air circulation during the process of hot air recovery and utilization is ensured, and the heat recovery efficiency is improved.

[0018] 2. Identify the clogging status of the filter screen based on the change in the state of the filter plate. When impurities accumulate on the left side of the filter screen, reducing the gas flow rate and increasing the pressure, which drives the rotation of the filter plate and the filter screen, it can be determined that the filter screen is clogged. The clogging of the filter screen drives the movement of related components. Through the cooperation of the negative pressure inside the connecting sleeve, the moving plate, the connecting rod, the gear set, etc., the right-angle frame moves, and the brush cleans the surface of the filter screen. After cleaning, if the filter screen is not clogged temporarily, under the pulling force of the spring, the rectangular frame resets, driving the rotation of the filter plate, and the right-angle frame moves again to clean the left side of the filter screen to ensure the cleaning effect. If the filter plate is still tilted, the arc-shaped block cuts off the power to release the magnetic force, and the electric telescopic rod extends to drive the movement of related components, changing the cleaning plate to a downward-tilted state and fixing it. The piston rod squeezes the gas to drive the reciprocating movement of the right-angle frame, and the brush cleans the surface of the filter screen and discharges the accumulated impurities on the left side. At the same time, the control guide vane swings reciprocally to generate a reverse air flow to blow the filter screen, further enhancing the cleaning effect.

[0019] 3. When the cleaning effect is not good after multiple cleanings, change the cleaning plate to a downward-tilted state and fix it through specific operations. The piston rod drives the right-angle frame to move to the bottom of the filter plate, so that the right-angle frame and the brush no longer touch the left side of the filter screen, facilitating the removal of the filter screen from inside the filter plate. When replacing the filter screen, synchronously control the two guide vanes to become vertical to prevent unfiltered gas from being discharged into the recovery device. The entire process of cleaning the filter screen and handling impurities can be completed without stopping the machine, without affecting the subsequent use of hot air, and ensuring the continuous and stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a plan schematic diagram of the overall structure of the pipeline of the present invention.

[0022] Figure 3 It is a schematic diagram of the cooperation structure between the electric telescopic rod and the filter screen of the present invention.

[0023] Figure 4 It is a schematic diagram of the cooperation structure between the filter plate and the cleaning plate of the present invention.

[0024] Figure 5 It is a schematic diagram of the cooperation structure between the electric push rod and the guide vane of the present invention.

[0025] Figure 6 It is a schematic diagram of the cooperation structure between the first rack and the connecting pipe of the present invention.

[0026] Figure 7 It is a schematic diagram of the cooperation structure between the filter plate and the right-angle frame of the present invention.

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the rectangular cylinder of the present invention.

[0028] Figure 9Schematic diagram of the cooperation structure between the first rack and the first pulley of the present invention.

[0029] Figure 10 Schematic diagram of the cooperation structure between the first pulley and the right-angle frame of the present invention.

[0030] Figure 11 Schematic diagram of the cooperation structure between the metal rod and the arc-shaped block of the present invention.

[0031] Reference numerals in the figure: 101, main machine; 102, pipeline; 103, bracket; 201, electric telescopic rod; 202, rectangular frame; 203, inclined rod; 204, limiting rod; 205, arc-shaped groove; 206, filter plate; 207, filter screen; 301, air guide plate; 302, adjusting gear; 303, adjusting rack; 304, vertical rod; 305, electric push rod; 401, piston rod; 402, spring; 403, connecting pipe; 404, first solenoid valve; 405, second solenoid valve; 406, rectangular cylinder; 407, moving plate; 408, connecting rod; 409, connecting sleeve; 501, first rack; 502, first gear; 503, large gear; 504, small gear; 505, first pulley; 506, second pulley; 507, belt; 508, right-angle frame; 601, metal rod; 602, arc-shaped block; 603, cleaning plate; 604, support plate. Detailed implementation manners

[0032] The following combines the attached Figures 1 - 11 to further elaborate on the detailed implementation manners of the present invention.

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] From Figures 1 - 11 presented, the present invention proposes a heating, ventilation and air conditioning system for automatic energy-saving heat exchange temperature control: The present invention includes a main unit 101, which is a high-performance HVAC unit. It adopts a variable-frequency compressor and a dual-rotor technology, and supports the switching of refrigeration, heating, dehumidification, and fresh air modes. There is a pipeline 102 on the top of the main unit 101. The pipeline 102 guides the discharged high-temperature waste gas to a heat recovery device (heating normal-temperature water with hot air). The pipeline 102 adopts a double-layer heat-insulating structure (the inner layer is high-temperature-resistant stainless steel, and the outer layer is a polyurethane foam layer) to reduce heat dissipation. There is a filter plate 206 in the middle of the pipeline 102. The bottom of the filter plate 206 is connected to the pipeline 102. Inside the filter plate 206, there is a filter screen 207. The filter screen 207 nested inside the filter plate 206 has a primary metal mesh, a medium-effect activated carbon layer, and a high-efficiency HEPA mesh, which can intercept ≥95% of particulate matter and harmful gases. There are two limit rods 204 on the top of the filter plate 206. The two limit rods 204 are arranged symmetrically front and back with the center line of the filter plate 206 as the axis of symmetry. The outside of the limit rod 204 penetrates through the side wall of the pipeline 102. The limit rod 204 is made of high-strength alloy material and is chrome-plated on the surface to prevent rust. The bottom of the filter plate 206 is rotatably connected to the pipeline 102. When the overall air flow velocity in the pipeline 102 increases and the air flow impact force on the windward side of the filter plate 206 increases, the filter plate 206 will rotate to the right. When the air flow velocity increases or the filter screen 207 is blocked, the ventilation area of the filter screen 207 decreases, and the pressure on the filter screen 207 will increase. Correspondingly, the filter screen 207 will rotate to the right. There is a rectangular frame 202 on the outside of each limit rod 204. There is an electric telescopic rod 201 on the right side of the rectangular frame 202. The inner side of the electric telescopic rod 201 is connected to the pipeline 102. The electric telescopic rod 201 can freely stretch when not powered on and can actively stretch when powered on. There is a displacement sensor inside the rectangular frame 202, which can identify the moving distance and direction of the rectangular frame 202. The swing of the filter plate 206 can drive the rectangular frame 202 to move horizontally through the limit rod 204. There are two brackets 103 on the top of the pipeline 102. The two brackets 103 are arranged symmetrically left and right with the rectangular frame 202 as the axis of symmetry. The bracket 103 is made of I-beam section and is fixed to the wall or roof by expansion bolts.

[0035] At the bottom of the rectangular frame 202, connection components are provided. At the bottom of the connection components, a connection sleeve 409 is provided. When the rectangular frame 202 moves, it can drive the connection sleeve 409 to move through the connection components. Inside the connection sleeve 409, a control component is provided. Inside the control component, a right-angle frame 508 is provided. The right side of the right-angle frame 508 is slidably connected to the left side of the filter plate 206. The connection sleeve 409 can drive the right-angle frame 508 to move up and down through the control component. Inside the right-angle frame 508, a brush is provided, which can brush the surface of the filter screen 207 to scrape off the impurities accumulated on the left side of the filter screen 207. At the bottom of the connection sleeve 409, a cleaning plate 603 is provided. At the same time, the cleaning plate 603 also rotates downward to open the bottom of the pipeline 102, facilitating the discharge of impurities and the replacement of the filter screen 207. On the right side inside the pipeline 102, a temperature control component is provided. Through the temperature control component, the flow rate of hot air can be adjusted, thereby completing the secondary utilization and adjustment of hot air.

[0036] In the middle of the pipeline 102, two arc-shaped grooves 205 are provided. The two arc-shaped grooves 205 are arranged symmetrically before and after with the center line of the pipeline 102 as the axis of symmetry. The arc-shaped grooves 205 are slidably connected to the limiting rods 204. The limiting rods 204 can move along the curvature of the arc-shaped grooves 205. When the rectangular frame 202 moves, the limiting rods 204 will rise and fall inside the rectangular frame 202. Through the constraints of the rectangular frame 202 and the arc-shaped grooves 205, the stability of the rotation of the limiting rods 204 and the filter plate 206 is ensured.

[0037] The connection components include inclined rods 203. The top of the inclined rods 203 is connected to the bottom of the rectangular frame 202. At the bottom of the inclined rods 203, piston rods 401 are provided. When the rectangular frame 202 moves to the right, it will drive the inclined rods 203 to move to the right. The outside of the piston rods 401 is connected to the connection sleeve 409. At the bottom of the piston rods 401, springs 402 are provided. The bottom of the springs 402 is connected to the connection sleeve 409. The inclined rods 203 drive the piston rods 401 to move to the right. However, at this time, the metal rod 601 is located at the bottom of the pipeline 102 and will not move with the movement of the piston rods 401. At this time, negative pressure will be generated inside the connection sleeve 409, and the springs 402 will be stretched.

[0038] The control components include a connecting pipe 403. The bottom of the connecting pipe 403 is communicated with the connection sleeve 409. At the top of the connecting pipe 403, a first electromagnetic valve 404 and a second electromagnetic valve 405 are provided. The electromagnetic valves are prior art and can be freely switched between open and closed according to electrical signals after being powered on. The height of the first electromagnetic valve 404 is higher than that of the second electromagnetic valve 405. Inside the first electromagnetic valve 404 and the second electromagnetic valve 405, a rectangular cylinder 406 is jointly provided. The right side of the rectangular cylinder 406 is connected to the filter plate 206. The rectangular cylinder 406 is fixed inside the filter plate 206.

[0039] Inside the rectangular cylinder 406, there is a moving plate 407. When the air pressure above or below the moving plate 407 changes, it can drive the moving plate 407 to move up and down. At the bottom of the moving plate 407, there is a connecting rod 408. The connecting rod 408 passes through the bottom of the rectangular cylinder 406. At the bottom of the connecting rod 408, there is a first rack 501. When the moving plate 407 moves downward, it can drive the connecting rod 408 to move downward, and the connecting rod 408 drives the first rack 501 to move. The bottom of the first rack 501 meshes with a first gear 502. The outer side of the first gear 502 is rotatably connected to the filter plate 206. The first rack 501 drives the first gear 502 to rotate rapidly. Inside the first gear 502, there is a large gear 503. The bottom of the large gear 503 meshes with a small gear 504. Inside the small gear 504, there is a first pulley 505. The inner side of the first pulley 505 is rotatably connected to the filter plate 206. The first gear 502 drives the large gear 503 to rotate synchronously. Since the diameter and number of teeth of the large gear 503 are larger than those of the small gear 504, when the first rack 501 moves downward, the first pulley 505 can be rotated multiple times through the cooperation of the first gear 502, the large gear 503 and the small gear 504. On the outer side of the first pulley 505, there is a belt 507. At the top of the belt 507, there is a second pulley 506. The inner side of the second pulley 506 is rotatably connected to the filter plate 206. The left end of the belt 507 is connected to the right-angle frame 508. The first pulley 505 drives the belt 507 to move through the second pulley 506, thereby driving the right-angle frame 508 to move back and forth, which is convenient for cleaning impurities.

[0040] At the bottom of the connecting sleeve 409, there is a metal rod 601. The inner side of the metal rod 601 is connected to the cleaning plate 603. At the top of the metal rod 601, there is an arc-shaped block 602. The top of the arc-shaped block 602 is connected to the pipeline 102. At the bottom of the middle part of the pipeline 102, there is a support plate 604. Inside the arc-shaped block 602 and the support plate 604, there is an electromagnetic element (the electromagnetic element is a prior art). After being energized, it can generate a magnetic force to fix the metal rod 601 and the cleaning plate 603, which is convenient for completing various operations.

[0041] The temperature control component includes an electric push rod 305 which is connected to the pipeline 102. A vertical rod 304 is provided on the left side of the electric push rod 305, and two adjusting racks 303 are provided on the left side of the vertical rod 304. The two adjusting racks 303 are arranged symmetrically up and down with the center line of the pipeline 102 as the axis of symmetry. An adjusting gear 302 is meshed with the inner side of the adjusting rack 303, and a wind guiding plate 301 is provided on the inner side of the adjusting gear 302. The outer side of the wind guiding plate 301 is rotatably connected to the pipeline 102. When the electric push rod 305 contracts, it can drive the vertical rod 304 and the adjusting rack 303 to move to the right side. The adjusting rack 303 drives the meshed adjusting gear 302 to rotate, so as to realize the rightward rotation of the two wind guiding plates 301. The larger the rightward rotation angle of the wind guiding plate 301 is, the larger the space between the two wind guiding plates 301 is, which is convenient for the air circulation.

[0042] Specifically, when recycling the hot air, the two wind guiding plates 301 are adjusted to an inclined state. Then, after the gas is filtered by the filter screen 207, it flows to the right side. If the airflow discharged by the host 101 becomes larger, the pressure on the filter plate 206 and the filter screen 207 will become larger at this time. At this time, it will drive the filter plate 206 and the filter screen 207 to rotate to the right side. The rightward rotation of the filter plate 206 can drive the rectangular frame 202 to move to the right side through the limiting rod 204. The displacement sensor can be used to identify this state. At this time, it indicates that the initial air volume is relatively large. Control the two wind guiding plates 301 to rotate to the horizontal state to make the opening of the wind guiding plate 301 the largest, which is convenient for the air circulation. And when the heat recovery device recognizes that the water temperature is relatively high, it can control the wind guiding plate 301 to rotate to the left side, reduce the cross-section of the air circulation inside the pipeline 102, reduce the heat output, and realize the adjustment of the water temperature.

[0043] Subsequently, the second solenoid valve 405 becomes open, and the first solenoid valve 404 becomes closed. When impurities accumulate on the left side of the filter screen 207, the gas flow rate inside the filter screen 207 decreases, and the pressure exerted on the corresponding filter screen 207 increases. At this time, the filter screen 207 and the filter plate 206 are driven to rotate to the right, thereby driving the piston rod 401 to move to the right. During this process, a negative pressure is generated inside the connecting sleeve 409, and then the gas at the bottom of the moving plate 407 is pumped into the connecting sleeve 409. At this time, the moving plate 407 moves downward. With the cooperation of the connecting rod 408 and the gear set, the right-angle frame 508 moves downward, and the surface of the filter screen 207 can be cleaned by the brush. If, after cleaning, the surface of the filter screen 207 does not become clogged temporarily, then under the pulling force of the spring 402, the rectangular frame 202 is pulled back to its original position, driving the filter plate 206 to rotate to the left. At the same time, the right-angle frame 508 moves upward to clean the left side of the filter screen 207 again to ensure the cleaning effect. In this state, the clogging state of the filter screen 207 can be identified based on the state change of the filter plate 206, and the right-angle frame 508 is correspondingly controlled to clean the surface of the filter screen 207. At the same time, after the cleaning is completed, the cleaning effect can be verified, that is, the reset situation of the filter plate 206.

[0044] If, after a single movement of the right-angle frame 508, the filter plate 206 continues to deflect to the right, it indicates that at this time, stubborn impurity accumulation has occurred on the surface of the filter screen 207. At the same time, the arc-shaped block 602 is energized to generate magnetism to adsorb and fix the metal rod 601. Subsequently, the electric telescopic rod 201 is controlled to actively extend, driving the filter plate 206 to rotate to the left and the right-angle frame 508 to move upward and reset. Then, the second solenoid valve 405 is controlled to close, and the first solenoid valve 404 is opened, driving the piston rod 401 to move to the left, squeezing the gas inside the connecting sleeve 409 into the top of the moving plate 407, pushing the connecting rod 408 downward, and causing the right-angle frame 508 to move downward. The electric telescopic rod 201 reciprocates and extends, driving the filter plate 206 to swing left and right, generating a vibration force. At the same time, since there are arc-shaped protrusions inside the pipeline 102, when the filter plate 206 rotates, its top can always contact the pipeline 102, preventing the situation of unfiltered gas. During the reciprocating swing of the filter plate 206, the right-angle frame 508 reciprocates, quickly cleaning the surface of the filter screen 207. Subsequently, the electric telescopic rod 201 is powered off, and the displacement sensor monitors the movement of the rectangular frame 202 to identify the inclination angle of the filter plate 206 for verifying the cleaning effect.

[0045] If the filter plate 206 is still inclined, the arc-shaped block 602 is controlled to cut off the power to release the magnetic force. Then, the electric telescopic rod 201 extends to drive the piston rod 401 to move downward to the left. The elastic force of the spring 402 is relatively large, and at this time, it can push the connecting sleeve 409 and the cleaning plate 603 to move downward. Then, the cleaning plate 603 is changed to a downward inclined state, and the support plate 604 generates a magnetic force to fix the cleaning plate 603. Then, the piston rod 401 starts to squeeze the gas inside the connecting sleeve 409 out, driving the right-angle frame 508 to reciprocate and clean the surface of the filter screen 207 through the brush, and completely discharging the impurities and the like accumulated on the left side of the filter screen 207. At the same time, the two air guide plates 301 are controlled to reciprocate and swing, changing the cross-section of the gas flow inside the pipeline 102, so as to generate an air flow with a sharp change in flow velocity inside the pipeline 102. When the air guide plate 301 swings to one side, the cross-section of the gas flow becomes smaller. According to the principle of fluid mechanics, when the gas flow rate remains basically unchanged, the reduction of the cross-section will cause the gas flow velocity to increase sharply. On the contrary, when the air guide plate 301 swings to the other side, the cross-section becomes larger, and the gas flow velocity will decrease accordingly. This periodic change in the cross-section makes an air flow with a sharp change in flow velocity generated inside the pipeline 102. Due to the interaction between the swing of the air guide plate 301 and the air flow, a reverse air flow will be generated to blow the impurities accumulated on the surface of the filter screen 207. When the reverse air flow blows the surface of the filter screen 207, it will blow off the impurities accumulated on the surface of the filter screen 207 with a strong impact force. These blown-off impurities will be carried out of the pipeline 102 along with the movement of the air flow, further increasing the cleaning effect and not affecting the subsequent use of hot air, and the cleaning can be completed without shutting down the machine.

[0046] If the effect is still not good after multiple cleanings, it indicates that the filter screen 207 needs to be replaced. The arc-shaped block 602 cuts off the power to release the magnetic force. Then, the electric telescopic rod 201 extends to drive the piston rod 401 to move downward to the left. The elastic force of the spring 402 is relatively large, and at this time, it can push the connecting sleeve 409 and the cleaning plate 603 to move downward. Then, the cleaning plate 603 is changed to a downward inclined state. Then, supported by the support plate 604, the cleaning plate 603 no longer rotates. Then, the piston rod 401 starts to squeeze the gas inside the connecting sleeve 409 out, driving the right-angle frame 508 to move to the bottom of the filter plate 206. At this time, the right-angle frame 508 and the brush no longer contact the left side of the filter screen 207, and the filter screen 207 can be taken out from the inside of the filter plate 206. Synchronously control the two air guide plates 301 to become vertical to prevent the unfiltered gas from being discharged into the recovery device after the filter screen 207 is taken out. At this time, the gas inside the pipeline 102 is discharged through the bottom of the pipeline 102 to further clean this area, discharge the impurities, etc., and then replace the filter screen 207.

[0047] It should be noted that: by adjusting the inclination state of the air guide plate 301, it can be adaptively adjusted according to the size of the air flow discharged by the main unit 101. When the air flow increases and the pressure on the filter plate 206 and the filter screen 207 increases, the air guide plate 301 can rotate to the horizontal state to increase the opening for facilitating air circulation; when the heat recovery device recognizes that the water temperature is high, the air guide plate 301 rotates to the left to reduce the air circulation cross-section, realizing the adjustment of heat output and water temperature control. Under different working conditions, by flexibly adjusting the state of the air guide plate 301, the rationality of air circulation during the hot air recovery process is ensured, the heat recovery efficiency is improved, and the stable operation of the system is maintained. According to the change of the state of the filter plate 206, the clogging state of the filter screen 207 is recognized. When impurities accumulate on the left side of the filter screen 207, the gas flow rate decreases and the pressure increases, driving the filter plate 206 and the filter screen 207 to rotate, it can be judged that the filter screen 207 is clogged. The clogging of the filter screen 207 drives the movement of relevant components. Through the cooperation of the negative pressure inside the connecting sleeve 409, the moving plate 407, the connecting rod 408, the gear set, etc., the right-angle frame 508 moves, and the brush cleans the surface of the filter screen 207. After cleaning, if the filter screen 207 is not clogged temporarily, under the pulling force of the spring 402, the rectangular frame 202 resets, driving the filter plate 206 to rotate, and the right-angle frame 508 moves again to clean the left side of the filter screen 207 to ensure the cleaning effect. If the filter plate 206 still has an inclination, the arc-shaped block 602 cuts off the power to release the magnetic force, the electric telescopic rod 201 extends to drive the movement of relevant components, changes the cleaning plate 603 to a downward inclined state and fixes it, the piston rod 401 squeezes the gas to drive the right-angle frame 508 to reciprocate, the brush cleans the surface of the filter screen 207 and discharges the accumulated impurities on the left side, and at the same time controls the air guide plate 301 to swing reciprocally to generate a reverse air flow to blow the filter screen 207, further increasing the cleaning effect. When the cleaning effect is not good after multiple cleanings, through a specific operation, the cleaning plate 603 is changed to a downward inclined state and fixed, and the piston rod 401 drives the right-angle frame 508 to move to the bottom of the filter plate 206, so that the right-angle frame 508 and the brush no longer contact the left side of the filter screen 207, facilitating the removal of the filter screen 207 from inside the filter plate 206. When replacing the filter screen 207, the two air guide plates 301 are synchronously controlled to become vertical states to prevent unfiltered gas from being discharged into the recovery device. The entire cleaning of the filter screen 207 and the impurity treatment process can be completed without stopping the machine, without affecting the subsequent use of hot air, and ensuring the continuous and stable operation of the system.

[0048] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating directions or position relationships are based on the directions or position relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0049] In addition, it should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles, or devices / equipment.

[0051] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A heating and ventilation air conditioner with automatic energy-saving heat exchange and temperature control, characterized in that: The invention comprises a main unit (101), wherein a pipe (102) is provided on the top of the main unit (101), a filter plate (206) is provided in the middle of the pipe (102), the bottom of the filter plate (206) is connected to the pipe (102), a filter screen (207) is provided inside the filter plate (206), two limit rods (204) are provided on the top of the filter plate (206), the two limit rods (204) are arranged symmetrically in front and back with the center line of the filter plate (206) as the symmetry axis, the outer side of the limit rods (204) passes through the side wall of the pipe (102), a rectangular frame (202) is provided on the outer side of each limit rod (204), an electric telescopic rod (201) is provided on the right side of the rectangular frame (202), the inner side of the electric telescopic rod (201) is connected to the pipe (102), and a displacement sensor is provided on the inner side of the rectangular frame (202); The bottom of the rectangular frame (202) is provided with a connection component, the bottom of the connection component is provided with a connection sleeve (409), the inner side of the connection sleeve (409) is provided with a control component, the inner side of the control component is provided with a right-angle frame (508), the right side of the right-angle frame (508) is slidably connected to the left side of the filter plate (206), the bottom of the connection sleeve (409) is provided with a cleaning plate (603), and the right side of the interior of the pipeline (102) is provided with a temperature control component.

2. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 1, characterized in that: Two brackets (103) are provided on the top of the pipe (102), and the two brackets (103) are arranged symmetrically with the rectangular frame (202) as the axis of symmetry.

3. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 1, characterized in that: Two arc-shaped grooves (205) are provided in the middle of the pipe (102), and the two arc-shaped grooves (205) are arranged symmetrically front to back with the center line of the pipe (102) as the symmetry axis, and the arc-shaped grooves (205) are slidably connected to the limit rod (204).

4. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 1, characterized in that: The connecting assembly comprises an inclined rod (203), the top of the inclined rod (203) being connected to the bottom of the rectangular frame (202), a piston rod (401) being provided at the bottom of the inclined rod (203), the outer side of the piston rod (401) being connected to a connecting sleeve (409), a spring (402) being provided at the bottom of the piston rod (401), and the bottom of the spring (402) being connected to the connecting sleeve (409).

5. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 1, characterized in that: The control component comprises a connecting pipe (403), a first solenoid valve (404) and a second solenoid valve (405) are provided on the top of the connecting pipe (403), the height of the first solenoid valve (404) is higher than the height of the second solenoid valve (405), a rectangular tube (406) is provided on the inner sides of the first solenoid valve (404) and the second solenoid valve (405), and the right side of the rectangular tube (406) is connected to the filter plate (206).

6. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 5, characterized in that: A movable plate (407) is provided inside the rectangular tube (406), a connecting rod (408) is provided at the bottom of the movable plate (407), the connecting rod (408) passes through the bottom of the rectangular tube (406), a first rack (501) is provided at the bottom of the connecting rod (408), a first gear (502) is meshed at the bottom of the first rack (501), and the outer side of the first gear (502) is rotatably connected to the filter plate (206).

7. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 6, characterized in that: A large gear (503) is provided on the inner side of the first gear (502), a small gear (504) is meshed at the bottom of the large gear (503), a first pulley (505) is provided on the inner side of the small gear (504), and the inner side of the first pulley (505) is rotatably connected to the filter plate (206).

8. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 7, characterized in that: A belt (507) is provided on the outer side of the first pulley (505), a second pulley (506) is provided on the top of the belt (507), the inner side of the second pulley (506) is rotatably connected to the filter plate (206), and the left end of the belt (507) is connected to the right-angle frame (508).

9. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 1, characterized in that: A metal rod (601) is provided at the bottom of the connecting sleeve (409), the inner side of the metal rod (601) is connected to the cleaning plate (603), an arc block (602) is provided at the top of the metal rod (601), the top of the arc block (602) is connected to the pipeline (102), and a support plate (604) is provided at the bottom of the middle of the pipeline (102).

10. The HVAC system with automatic energy-saving heat exchange and temperature control according to claim 1, characterized in that: The temperature control component comprises an electric push rod (305), the electric push rod (305) and the pipeline (102) are connected to each other, a vertical rod (304) is provided on the left side of the electric push rod (305), two adjustment racks (303) are provided on the left side of the vertical rod (304), the two adjustment racks (303) are arranged symmetrically up and down with the center line of the pipeline (102) as the symmetry axis, an adjustment gear (302) is meshed on the inner side of the adjustment rack (303), an air guide plate (301) is provided on the inner side of the adjustment gear (302), and the outer side of the air guide plate (301) is rotatably connected to the pipeline (102).

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