Water preheating equipment for energy-saving heating and ventilation equipment

Abstract

The invention relates to the technical field of heating and ventilation equipment, in particular to energy-saving heating and ventilation equipment water preheating equipment which comprises an L-shaped plate. The heating ventilation air conditioner outdoor unit is installed on the L-shaped plate, an opening is formed in the bottom end of the heating ventilation air conditioner outdoor unit, and a heat preservation box is arranged on the L-shaped plate and located below the heating ventilation air conditioner outdoor unit. The preheating mechanism comprises a water tank, an air heater, a pipeline structure, a fluff structure, a stirring pipe and a pressure release valve; a preheating area is arranged in the middle of the water tank; the bottom end of the water tank is connected with a tank body a; the pipeline structure is arranged on the inner side of the box body a; a stirring pipe is rotationally arranged in the water tank; a driving assembly is arranged on the box body a; the hot-air blower is communicated with the stirring pipe through a pipeline structure; a fluff structure is arranged on the water tank; and the water tank is connected with a plurality of pressure release valves. The preheating efficiency is improved without waiting for the completion of cold water heating; in addition, heat can be evenly conducted to the fins and the copper pipes through the fluff structure, and the situation that part of the fins and the copper pipes cannot achieve the preheating effect is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of heating and ventilation equipment, and in particular to an energy-saving water preheating device for heating and ventilation equipment. Background Art

[0002] HVAC is an air conditioner with heating, ventilation and air conditioning functions. When HVAC is in use, when the outdoor temperature is below 5℃ and the air humidity is high, the surface temperature of the outdoor unit evaporator may be lower than the dew point temperature, and the moisture in the air will condense and form frost.

[0003] Chinese patent publication number CN219244341U discloses an energy-saving HVAC equipment water preheating device, which includes a hot air blower, a servo motor a, an L-shaped stirring tube, a preheating box, a heating network pipe and a water pump. The hot air blower is used to inject hot air into the L-shaped stirring tube. The servo motor a drives the L-shaped stirring tube to rotate, which can accelerate the heating of the cold water in the preheating box. The water pump then uses the hot water to transport the hot water to the heating network pipe, and the hot water is used to preheat the equipment in the casing.

[0004] However, the above-mentioned existing technology has the following defects: the water in the preheating box needs to be heated to a certain temperature before the hot water can be transported to the inside of the heating network pipe to preheat the equipment in the casing. It takes a certain amount of time to heat the cold water to a certain temperature, which reduces the preheating efficiency; in addition, the main frosting parts of the HVAC outdoor unit are the fins and copper tubes. The heating network pipe can only directly exchange heat with the casing, and then the casing transfers the heat to the equipment in the casing. The above process will cause a large amount of heat loss, further reducing the preheating efficiency; and the fins and copper tubes are numerous and dense, and the heat conducted through the casing through the air cannot be evenly conducted to each fin and copper tube, which can easily lead to some fins and copper tubes failing to achieve the preheating effect. Summary of the Invention

[0005] The purpose of the present invention is to address the problems existing in the background technology and to propose an energy-saving water preheating device for HVAC equipment.

[0006] The technical solution of the present invention is: an energy-saving HVAC water preheating device, comprising an L-shaped plate; a HVAC outdoor unit is mounted on the L-shaped plate, an opening is opened at the bottom of the HVAC outdoor unit, and an insulation box is provided on the L-shaped plate below the HVAC outdoor unit; and further comprising:

[0007] The preheating mechanism is arranged in the heat preservation box and enters the inner side of the HVAC outdoor unit through the opening. The preheating mechanism includes a water tank, a hot air blower, a piping structure, a fluff structure, a stirring pipe and a pressure relief valve. The middle part of the water tank is provided with a preheating zone. The bottom end of the water tank is connected to the box body a. The piping structure is arranged inside the box body a. The stirring pipe is provided for rotating inside the water tank. The box body a is provided with a driving assembly for driving the stirring pipe to rotate. The hot air blower is connected to the stirring pipe through the piping structure. The water tank is provided with a fluff structure. One end of the fluff structure extends to the inner side of the water tank, and the other end of the fluff structure extends into the preheating zone. The water tank is connected with a plurality of downward-slanting pressure relief valves.

[0008] The vibration mechanism includes a box b, a spring and a motor c; the hot air blower is connected to the box b; the box b is slidably arranged on the outside of the box a; the spring is arranged on the inside of the box b and connected to the box a; the motor c is arranged on the box a;

[0009] The lifting mechanism is arranged on the L-shaped plate and connected to the box body b, and is used to drive the preheating mechanism to move up and down.

[0010] Preferably, the water tank and the preheating zone are both L-shaped to facilitate adaptation to the shape of the copper tube inside the HVAC outdoor unit and the fin distribution shape; a water inlet is provided on the water tank, and a solenoid valve is provided on the water tank in the preheating zone.

[0011] Preferably, a box body is connected to the water tank near the bottom end; the box body is located in the preheating area, and a drain pipe is connected to the box body.

[0012] Preferably, an observation window is provided on the water tank to facilitate observation of the water level inside the water tank.

[0013] Preferably, multiple branch pipes are evenly distributed on the stirring pipe; a check valve is provided on the branch pipe; the bottom end of the stirring pipe is connected to pipe a; the pipeline structure includes pipe b and pipe c; pipe b is connected to the hot air blower; multiple pipes c are provided and one end of each pipe is connected to pipe b, and the other end of each pipe c is rotatably connected to pipe a.

[0014] Preferably, the driving assembly includes a motor a, a gear a and a gear b; the motor a is mounted on the housing a and its output end is connected to the gear a; the gear b is connected to the tube a and meshes with the gear a, and adjacent gears b mesh with each other.

[0015] Preferably, the fluff structure includes thermally conductive carbon fibers and bristles, and the thermally conductive carbon fibers and bristles are woven into a twisted shape.

[0016] Preferably, a movable slot is provided on the L-shaped plate; the lifting mechanism includes a motor b, a carrier plate, a winding wheel and a traction rope; the motor b is connected to the L-shaped plate, and the output end of the motor b is connected to the winding wheel; one end of the traction rope is connected to the winding wheel, and the other end of the traction rope is connected to the carrier plate; the carrier plate passes through the movable slot and is connected to the box body b.

[0017] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0018] By providing a preheating mechanism and a lifting mechanism, the lifting mechanism drives the preheating mechanism to move to the inside of the HVAC outdoor unit. During the cold water heating process, the heat absorbed by the cold water can be conducted to the fins and copper tubes through the fluff structure, without waiting for the cold water heating to be completed, thereby improving the preheating efficiency; since the fluff structure is densely populated and evenly distributed, the fluff structure can directly and evenly conduct heat to each fin and copper tube, reducing heat loss and avoiding the situation where some fins and copper tubes fail to achieve the preheating effect.

[0019] By providing a vibration mechanism, the vibration mechanism drives the water tank to vibrate, so that the fluff structure can clean the dust on the surface of the fins and copper tubes. When the air pressure inside the water tank is too high, the pressure relief valve will spray gas, which can blow most of the cleaned dust into the box body below, thereby realizing the dust cleaning function of the fins and copper tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of an embodiment of the present invention without an insulation box Figure 1 ;

[0022] Figure 3 A schematic diagram of the structure of an embodiment of the present invention without an insulation box Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of an embodiment of the present invention when there is no insulation box and the preheating mechanism enters the interior of the HVAC outdoor unit;

[0024] Figure 5 This is a structural diagram of an embodiment of the present invention when box a and box b are separated;

[0025] Figure 6 Schematic diagram of the structure when box a and box b are separated and box a is separated from the water tank in an embodiment of the present invention Figure 1 ;

[0026] Figure 7 for Figure 6 A in the middle is an enlarged structural diagram;

[0027] Figure 8 Schematic diagram of the structure when box a and box b are separated and box a is separated from the water tank in an embodiment of the present invention Figure 2 ;

[0028] Figure 9for Figure 8 The enlarged structural diagram at B in the middle;

[0029] Figure 10 for Figure 8 The enlarged structural diagram at C in the middle;

[0030] Figure 11 This is a schematic diagram of the cross-sectional structure of a stirring tube in an embodiment of the present invention.

[0031] Figure numerals: 1. L-shaped plate; 2. Motor b; 3. Movable through groove; 4. Traction rope; 5. Carrier plate; 6. Box body b; 7. Box body a; 8. Water tank; 801, Water inlet; 9. Hot air blower; 10. Fluff structure; 11. Motor c; 12. Spring; 13. Motor a; 14. Gear b; 15. Pipe b; 16. Pipe c; 17. Observation window; 18. Pressure relief valve; 19. Solenoid valve; 20. Drain pipe; 21. Box body; 22. Stirring pipe; 23. Branch pipe; 24. Check valve; 25. Pipe a; 26. Gear a; 27. Insulation box. DETAILED DESCRIPTION

[0032] Example 1, as Figure 1-Figure 5 and Figures 8-11 As shown, the present invention proposes an energy-saving HVAC water preheating device, comprising an L-shaped plate 1; an HVAC outdoor unit is mounted on the L-shaped plate 1, an opening is provided at the bottom end of the HVAC outdoor unit, and an insulation box 27 is provided on the L-shaped plate 1 below the HVAC outdoor unit, the top end of the insulation box 27 contacts the bottom end of the HVAC outdoor unit, and an inlet and outlet are provided at the top end of the insulation box 27 to facilitate the entry and exit of the preheating mechanism into and out of the insulation box 27; the device also comprises a preheating mechanism, a vibrating mechanism, and a lifting mechanism;

[0033] The preheating mechanism is arranged in the heat preservation box 27 and enters the inner side of the HVAC outdoor unit through the opening. The heat preservation box 27 can keep the preheating mechanism warm to prevent the water in the water tank 8 from freezing when the preheating mechanism is not in use. A hinged door is provided on the heat preservation box 27; the preheating mechanism includes a water tank 8, a hot air blower 9, a piping structure, a fluff structure 10, a stirring pipe 22 and a pressure relief valve 18; a preheating area is provided in the middle part of the water tank 8, and the water tank 8 and the preheating area are both L-shaped to facilitate adaptation to the shape of the copper tube inside the HVAC outdoor unit and the fin distribution shape; the bottom end of the water tank 8 is connected to the box a7, and cold water is stored in the water tank 8; the piping structure is arranged on the inner side of the box a7; a stirring pipe 22 is provided inside the water tank 8, and a plurality of branch pipes 23 are evenly distributed on the stirring pipe 22; a check valve 24 is provided on the branch pipe 23, and the check valve 24 can prevent water from entering the inside of the stirring pipe 22; the stirring The bottom end of the tube 22 is connected to the tube a25; the box a7 is provided with a driving assembly for driving the stirring tube 22 to rotate; the hot air blower 9 is connected to the stirring tube 22 through a pipeline structure, and the pipeline structure includes a tube b15 and a tube c16; the tube b15 is connected to the hot air blower 9 (including but not limited to being connected through a telescopic hose); there are multiple tubes c16 and one end of each tube is connected to the tube b15, and the other end of the tube c16 is rotatably connected to the tube a25; a fluff structure 10 is provided on the water tank 8, and the fluff structure 10 includes heat-conducting carbon fiber and bristles, and the heat-conducting carbon fiber and bristles are woven into a twist shape, so that the fluff structure 10 has a certain toughness and elasticity, and can be easily inserted between dense copper tubes and between fins; one end of the fluff structure 10 extends to the inside of the water tank 8, and the other end of the fluff structure 10 extends to the preheating zone; a plurality of pressure relief valves 18 tilted downward are connected to the water tank 8;

[0034] The vibration mechanism includes a box b6, a spring 12 and a motor c11; the hot air blower 9 is connected to the box b6; the box b6 is slidably arranged on the outside of the box a7; the spring 12 is arranged on the inside of the box b6 and connected to the box a7; the motor c11 is arranged on the box a7;

[0035] The lifting mechanism is arranged on the L-shaped plate 1 and connected to the box b6, and is used to drive the preheating mechanism to move up and down.

[0036] It should be noted that the water tank 8 has good thermal conductivity, so that the heat of the hot water in the water tank 8 can be transferred to the HVAC outdoor unit through the water tank 8, thereby preheating the HVAC outdoor unit casing and other equipment inside it.

[0037] In this embodiment, the lifting mechanism is used to drive the preheating mechanism to rise, so that the preheating mechanism passes through the opening and enters the inside of the HVAC outdoor unit. At this time, the copper tubes and fins in the HVAC outdoor unit are located in the preheating area, and the fluff structure 10 is inserted between the dense copper tubes and fins (the fluff structure 10 can be in contact with each copper tube and fin). Then, the hot air blower 9 is turned on, and the hot air blower 9 transports hot air to the inside of the stirring tube 22 through the pipeline structure. The hot air flow is discharged into the cold water through the branch pipe 23, thereby realizing the heating function of the cold water. At the same time, under the action of the driving component, the stirring tube 22 rotates, and the stirring tube 22 drives the branch tube 23 to rotate, which can stir the cold water, accelerate the uniform mixing of hot air and cold water, and improve the heating efficiency of the cold water; in the process of cold water being heated, the heat absorbed by the cold water can be transferred to the fins and copper tubes through the fluff structure 10, and there is no need to wait for the cold water heating to be completed, thereby improving the preheating efficiency; since the fluff structures 10 are densely populated and evenly distributed, the fluff structures 10 can directly and evenly transfer heat to each fin and copper tube, reducing heat loss and avoiding the situation where some fins and copper tubes cannot achieve the preheating effect.

[0038] When the fluff structure 10 preheats the fins and copper tubes, the motor c11 is turned on at the same time. The motor c11 is a vibration motor. The motor c11 drives the box a7 to vibrate up and down, and the box a7 drives the preheating mechanism to vibrate up and down (the spring 12 can intensify the vibration of the preheating mechanism, increase the vibration frequency of the fluff structure 10, and thus improve the cleaning efficiency), so that the fluff structure 10 can clean the dust on the surface of the fins and copper tubes. When the air pressure inside the water tank 8 is too high, the pressure relief valve 18 will spray gas. Since the pressure relief valve 18 is set obliquely downward, the sprayed gas is also obliquely downward, which can blow most of the cleaned dust into the box body 21 below, and the sprayed gas still has residual heat, which can preheat the HVAC outer casing and internal equipment.

[0039] It is worth noting that a filter cloth is provided in the box body 21 at the drain pipe 20 for filtering dust; after the water tank 8 enters the interior of the HVAC outdoor unit, the side walls of the water tank 8 at both ends are in contact with the inner wall of the HVAC outdoor unit (refer to Figure 4 ), so that only the top of the preheating area is open and the rest of the four sides are closed. The gas ejected obliquely downward by the pressure relief valve 18 can only flow downward under the guidance of the preheating area, thereby blowing the dust into the box body 21, and the gas entering the box body 21 is discharged through the drain pipe 20.

[0040] Example 2, as Figures 8-10As shown, the present invention proposes an energy-saving HVAC equipment water preheating device. Compared with the first embodiment, this embodiment also includes a water inlet 801 on the water tank 8 (a one-way valve is provided at the water inlet 801), and a solenoid valve 19 is provided on the water tank 8 in the preheating zone; a box body 21 is connected to the water tank 8 near the bottom end; the box body 21 is located in the preheating zone, and a drain pipe 20 is connected to the box body 21; an observation window 17 is provided on the water tank 8 to facilitate observation of the water level inside the water tank 8; an alarm light and a controller are provided on the insulation box 27, and a liquid level sensor is provided in the water tank 8, and the liquid level sensor is a high-temperature resistant liquid level sensor (such as a capacitive liquid level sensor).

[0041] In this embodiment, after the preheating mechanism comes out from the interior of the HVAC outdoor unit, the solenoid valve 19 is opened, so that the water in the water tank 8 flows out and enters the inner side of the box body 21, which can flush the dust in the box body 21 and discharge it through the drain pipe 20, thereby cleaning the dust inside the box body 21.

[0042] When the water in the water tank 8 is less than two-thirds, the liquid level sensor will detect that the cold water level in the water tank 8 is lower than the threshold value. The liquid level sensor will feedback to the controller, and the controller will control the alarm light to light up and sound an alarm to remind the user to add cold water to the water tank 8; the user can add cold water to the water tank 8 by opening the hinged door and using the water filling port 801 on the water tank 8.

[0043] Example 3, as Figure 6-Figure 8 As shown, the present invention proposes an energy-saving HVAC equipment water preheating device. Compared with the second embodiment, the structure of the driving component is also introduced in detail. The driving component includes a motor a13, a gear a26 and a gear b14; the motor a13 is installed on the box a7 and its output end is connected to the gear a26; the gear b14 is connected to the pipe a25 and meshes with the gear a26, and adjacent gears b14 mesh with each other.

[0044] In this embodiment, the motor a13 drives the gear a26 at its output end to rotate, the gear a26 drives the gear b14 meshing with it to rotate, the gear b14 drives the remaining gears b14 to rotate, the gear b14 drives the tube a25 to rotate, the tube a25 drives the stirring tube 22 to rotate, and the rotation of the stirring tube 22 can stir the cold water in the water tank 8, accelerate the uniform mixing of hot air and cold water, and improve the heating efficiency of the cold water.

[0045] Example 4, as Figure 3As shown, the present invention proposes an energy-saving HVAC equipment water preheating device. Compared with the third embodiment, the structure of the lifting mechanism is also introduced in detail. A movable slot 3 is provided on the L-shaped plate 1; the lifting mechanism includes a motor b2, a carrier plate 5, a winding wheel and a traction rope 4; the motor b2 is connected to the L-shaped plate 1, and the output end of the motor b2 is connected to the winding wheel; one end of the traction rope 4 is connected to the winding wheel, and the other end of the traction rope 4 is connected to the carrier plate 5; the carrier plate 5 passes through the movable slot 3 and is connected to the box b6.

[0046] In this embodiment, the motor b2 is a dual-axis motor. When the motor b2 is working, it drives the winding wheels at both ends to rotate clockwise (refer to Figure 3 ), the winding wheel is wound around the traction rope 4, the traction rope 4 drives the carrier plate 5 to rise, the carrier plate 5 drives the box b6 to rise, the box b6 drives the box a7 to rise through the supporting force of the spring 12, and the box a7 drives the water tank 8 to rise, so that the entire preheating mechanism passes through the opening at the bottom end of the HVAC outdoor unit and enters its inner side until the box a7 contacts the bottom end of the HVAC outdoor unit, and the water tank 8 can no longer rise.

[0047] When the motor b2 drives the winding wheels at both ends to rotate counterclockwise (refer to Figure 3 ), the wound traction rope 4 can be loosened and unfolded, so that the box b6 drives the box a7 to move downward, and then the preheating mechanism moves out of the HVAC outdoor unit through the opening.

[0048] In summary, when the present invention is used, when the HVAC outdoor unit needs to be preheated, the motor b2 is turned on. When the motor b2 is working, it drives the winding wheels at both ends to rotate clockwise (refer to Figure 3), the reel is wound around the traction rope 4, the traction rope 4 drives the carrier plate 5 to rise, the carrier plate 5 drives the box b6 to rise, the box b6 drives the box a7 to rise through the supporting force of the spring 12, and the box a7 drives the water tank 8 to rise, so that the entire preheating mechanism passes through the opening at the bottom end of the HVAC outdoor unit into its inner side until the box a7 contacts the bottom end of the HVAC outdoor unit, and the water tank 8 can no longer rise; at this time, the copper tubes and fins in the HVAC outdoor unit are located in the preheating area, and the fluff structure 10 is inserted between the dense copper tubes and between the fins (the fluff structure 10 can contact each copper tube and fin), and then the hot air blower 9 is turned on, and the hot air blower 9 transports hot air to the inside of the stirring tube 22 through the pipeline structure, and the hot air flow is discharged into the cold water through the branch pipe 23, thereby realizing the heating function of the cold water; at the same time, the motor a13 is turned on, and the motor a13 drives the gear a26 at its output end to rotate, and the gear a26 drives the gear a26 with The meshing gear b14 rotates, and the gear b14 drives the other gears b14 to rotate, and the gear b14 drives the tube a25 to rotate, and the tube a25 drives the stirring tube 22 to rotate. The rotation of the stirring tube 22 can stir the cold water in the water tank 8, accelerate the uniform mixing of hot air and cold water, and improve the heating efficiency of the cold water; in the process of heating the cold water, the heat absorbed by the cold water can be conducted to the fins and copper tubes through the fluff structure 10, without waiting for the cold water heating to be completed, thereby improving the preheating efficiency; since the fluff structures 10 are densely populated and evenly distributed, the fluff structure 10 can directly and evenly conduct heat to each fin and copper tube, reducing heat loss and avoiding the situation where some fins and copper tubes have no preheating effect; the water tank 8 itself has good thermal conductivity, and the heat in the water can be conducted to the HVAC outdoor unit through the water tank 8, which is convenient for preheating the HVAC outdoor unit casing and other equipment inside it.

[0049] When the fluff structure 10 preheats the fins and copper tubes, the motor c11 is turned on at the same time. The motor c11 is a vibration motor. The motor c11 drives the box a7 to vibrate up and down, and the box a7 drives the preheating mechanism to vibrate up and down (the spring 12 can intensify the vibration of the preheating mechanism, increase the vibration frequency of the fluff structure 10, and thus improve the cleaning efficiency), so that the fluff structure 10 can clean the dust on the surface of the fins and copper tubes (the vibration of the water tank 8 is very high but the amplitude is very small, ensuring that the fins and copper tubes are still in the preheating area during the vibration process). When the water tank When the internal air pressure is too high, the pressure relief valve 18 will spray gas. Since the pressure relief valve 18 is set obliquely downward, the sprayed gas is also obliquely downward, which can blow most of the dust that has been swept into the box body 21 below, realizing the dust cleaning function of the fins and copper tubes. The gas entering the box body 21 is finally discharged through the drain pipe 20. The filter cloth in the box body 21 can realize the dust filtering function, preventing the dust from being discharged with the gas through the drain pipe 20. In addition, the discharged gas still has residual heat, which can preheat the HVAC outer casing and other equipment inside it.

[0050] After the HVAC outdoor unit is preheated, turn on the motor b2 again, so that the motor b2 drives the winding wheels at both ends to rotate counterclockwise (refer to Figure 3 ), the rolled-up traction rope 4 can be loosened and unfolded, so that the box body b6 drives the box body a7 to move downward, and then the preheating mechanism moves out of the HVAC outdoor unit through the opening. After that, the user can open the hinged door on the insulation box 27 to enter the insulation box 27, place the container at the drain pipe 20, and open the solenoid valve 19 to allow the water in the water tank 8 to flow out and enter the inner side of the box body 21, which can flush the dust in the box body 21 and discharge it through the drain pipe 20 and flow into the container, thereby cleaning the dust inside the box body 21; when the water in the water tank 8 is less than two-thirds, the liquid level sensor will detect that the cold water level in the water tank 8 is lower than the threshold value, and the liquid level sensor will feedback to the controller, and the controller will control the alarm light to light up and sound an alarm to remind the user that cold water needs to be added to the water tank 8. Cold water can be added to the water tank 8 by using the water filling port 801 on the water tank 8 (a one-way valve is provided at the water filling port 801).

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An energy-saving HVAC water preheating device, comprising an L-shaped plate (1); a HVAC outdoor unit is mounted on the L-shaped plate (1), an opening is provided at the bottom end of the HVAC outdoor unit, and an insulation box (27) is provided on the L-shaped plate (1) below the HVAC outdoor unit; and the device is characterized in that: Also includes: A preheating mechanism is provided in an insulation box (27) and enters the inner side of a heating and ventilation air conditioning unit through an opening. The preheating mechanism comprises a water tank (8), a hot air blower (9), a pipeline structure, a fluff structure (10), a stirring pipe (22) and a pressure relief valve (18); a preheating zone is provided in the middle of the water tank (8); the bottom end of the water tank (8) is connected to a box body a (7); the pipeline structure is provided inside the box body a (7); a stirring pipe (22) is provided inside the water tank (8); a driving assembly is provided on the box body a (7) for driving the stirring pipe (22) to rotate; the hot air blower (9) is connected to the stirring pipe (22) through the pipeline structure; a fluff structure (10) is provided on the water tank (8); one end of the fluff structure (10) extends to the inner side of the water tank (8), and the other end of the fluff structure (10) extends into the preheating zone; a plurality of downwardly inclined pressure relief valves (18) are connected to the water tank (8); A vibration mechanism comprises a box b (6), a spring (12) and a motor c (11); a hot air blower (9) is connected to the box b (6); the box b (6) is slidably arranged on the outside of the box a (7); the spring (12) is arranged on the inside of the box b (6) and connected to the box a (7); and the motor c (11) is arranged on the box a (7); The lifting mechanism is arranged on the L-shaped plate (1) and connected to the box body b (6), and is used to drive the preheating mechanism to rise and fall.

2. The energy-saving HVAC equipment water preheating device according to claim 1, characterized in that: The water tank (8) and the preheating zone are both L-shaped to facilitate adaptation to the shape of the copper tube inside the HVAC outdoor unit and the distribution shape of the fins; a water inlet (801) is provided on the water tank (8), and a solenoid valve (19) is provided on the water tank (8) in the preheating zone.

3. The energy-saving HVAC water preheating device according to claim 1, characterized in that: A box body (21) is connected to the water tank (8) near the bottom end; the box body (21) is located in the preheating zone, and a drain pipe (20) is connected to the box body (21).

4. The energy-saving HVAC water preheating device according to claim 1, characterized in that: The water tank (8) is provided with an observation window (17) for observing the water level inside the water tank (8).

5. The energy-saving HVAC water preheating device according to claim 1, characterized in that: A plurality of branch pipes (23) are evenly distributed on the stirring pipe (22); a check valve (24) is provided on the branch pipe (23); a pipe a (25) is connected to the bottom end of the stirring pipe (22); the pipeline structure includes a pipe b (15) and a pipe c (16); the pipe b (15) is connected to the hot air blower (9); a plurality of pipes c (16) are provided, one end of which is connected to the pipe b (15), and the other end of the pipe c (16) is rotatably connected to the pipe a (25).

6. The energy-saving HVAC equipment water preheating device according to claim 5, characterized in that: The driving assembly includes a motor a (13), a gear a (26) and a gear b (14); the motor a (13) is mounted on a housing a (7) and its output end is connected to the gear a (26); the gear b (14) is connected to a tube a (25) and meshes with the gear a (26), and adjacent gears b (14) mesh with each other.

7. The energy-saving HVAC equipment water preheating device according to claim 1, characterized in that: The fluff structure (10) comprises heat-conducting carbon fibers and bristles, and the heat-conducting carbon fibers and the bristles are woven into a twisted shape.

8. The energy-saving HVAC water preheating device according to claim 1, characterized in that: A movable through slot (3) is provided on the L-shaped plate (1); the lifting mechanism comprises a motor b (2), a carrier plate (5), a reel and a traction rope (4); the motor b (2) is connected to the L-shaped plate (1), and the output end of the motor b (2) is connected to the reel; one end of the traction rope (4) is connected to the reel, and the other end of the traction rope (4) is connected to the carrier plate (5); the carrier plate (5) passes through the movable through slot (3) and is connected to the box body b (6).

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