Suspension fan waste heat recovery device

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a suspension fan waste heat recovery device which comprises a low-temperature water tank, a primary water feeding pump, a heat exchange tank, a hot water storage tank, a secondary water feeding pump and a hot water tank. The water outlet end of the first-stage water feeding pump is communicated with the water inlet end of the heat exchange tank, the air inlet end of the heat exchange tank is communicated with a heat dissipation outlet of a suspension fan, the water outlet end of the heat exchange tank is communicated with the water inlet end of the second-stage water feeding pump, and the water outlet end of the second-stage water feeding pump is communicated with the hot water tank. The waste heat recovery device has the effect of recovering the heat dissipation waste heat of the suspension fan.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery device for a magnetic levitation blower. Background Art

[0002] Magnetic levitation blowers generally include magnetic levitation blowers and air suspension blowers. The working principle of an air suspension blower is mainly based on the suspension technology of air bearings and the drive of high-speed permanent magnet motors. When the blower rotor rotates at a high speed, air will generate a dynamic pressure effect between the rotor and the surface of the foil bearing, forming a high-pressure air film, thereby floating the rotor. This design without mechanical contact greatly reduces the frictional resistance, improves the operating efficiency and reduces the noise. The magnetic levitation blower uses magnetic levitation bearings, which have the advantages of high efficiency, low noise, few faults, and no need for a lubrication system. However, during the operation of the magnetic levitation blower, the air discharged due to heat dissipation carries a relatively high amount of heat. This part of the heat is directly or indirectly exchanged with the air and lost to the atmosphere, resulting in relatively serious energy waste. Summary of the Utility Model

[0003] In order to recover the waste heat of the magnetic levitation blower during heat dissipation, the utility model provides a waste heat recovery device for a magnetic levitation blower to solve the problems of the prior art.

[0004] A waste heat recovery device for a magnetic levitation blower provided by the utility model adopts the following technical scheme:

[0005] A waste heat recovery device for a magnetic levitation blower includes a low-temperature water tank, a first-stage water supply pump, a heat exchange tank, a hot water storage tank, a second-stage water supply pump, and a hot water tank. The water inlet end of the first-stage water supply pump is connected to the low-temperature water tank, the water outlet end of the first-stage water supply pump is connected to the water inlet end of the heat exchange tank, the air inlet end of the heat exchange tank is connected to the heat dissipation outlet of the magnetic levitation blower, the water outlet end of the heat exchange tank is connected to the water inlet end of the second-stage water supply pump, and the water outlet end of the second-stage water supply pump is connected to the hot water tank.

[0006] Preferably, a water inlet pipe is arranged at the water inlet end of the heat exchange tank. The water inlet pipe extends into the heat exchange tank, and a plurality of water inlet branch pipes are connected to the water inlet pipe. A water outlet pipe is arranged at the water outlet end of the heat exchange tank. The water outlet pipe extends into the heat exchange tank, and a plurality of water outlet branch pipes are connected to the water outlet pipe. A plurality of heat exchange pipes are connected between the water inlet branch pipes and the water outlet branch pipes.

[0007] Preferably, the water inlet pipe is located at the top of the side wall of the heat exchange tank, the water outlet pipe is located at the bottom of the side wall of the heat exchange tank, the air inlet end of the heat exchange tank is located at the bottom end of the heat exchange tank, and the air outlet end of the heat exchange tank is located at the top end of the heat exchange tank.

[0008] Preferably, a plurality of heat absorption fins are arranged between the plurality of heat exchange tubes. The heat absorption fins are connected to the plurality of heat exchange tubes, and the plurality of heat absorption fins are arranged at intervals along the length direction of the heat exchange tubes.

[0009] Preferably, the edge of the heat absorption fin is connected to the inner wall of the heat exchange tank, and a plurality of through holes are arranged on the heat absorption fin.

[0010] Preferably, the edge of the heat absorption fin is inclined.

[0011] Preferably, a support rod is connected between the water outlet branch pipe and the bottom of the heat exchange tank.

[0012] Preferably, the heat absorption fin is made of aluminum, and the heat exchange tube is made of stainless steel.

[0013] Preferably, a heat insulation layer is arranged on the outer surface of the heat exchange tank.

[0014] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0015] The primary feed water pump pumps low-temperature water from the low-temperature water tank into the heat exchange tank. The high-temperature air at the heat dissipation outlet of the suspension fan enters the heat exchange tank to exchange heat with the low-temperature water. The low-temperature water absorbs heat in the heat exchange tank and becomes high-temperature water, and then enters the hot water storage tank. The secondary feed water pump pumps the high-temperature water from the hot water storage tank into the hot water tank, thereby realizing the recovery and utilization of the heat dissipation waste heat of the suspension fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0017] Figure 2 is a schematic sectional view of the heat exchange tank in the present utility model.

[0018] Figure 3 is a schematic diagram of the structure of the water inlet pipe and the water outlet pipe in the present utility model.

[0019] In the figure: 1, low-temperature water tank; 2, primary feed water pump; 21, intelligent regulation system of the feed water pump; 3, heat exchange tank; 31, water inlet pipe; 32, water inlet branch pipe; 33, water outlet pipe; 34, water outlet branch pipe; 35, heat exchange tube; 36, heat absorption fin; 361, through hole; 37, support rod; 4, hot water storage tank; 5, secondary feed water pump; 6, hot water tank; 7, temperature control system; 8, heat dissipation outlet of the suspension fan; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0022] An embodiment of the present utility model discloses a waste heat recovery device for a suspension fan, as Figures 1-3 shown, which includes a low-temperature water tank 1, a primary feed water pump 2, a heat exchange tank 3, a hot water storage tank 4, a secondary feed water pump 5, and a hot water tank 6. The water inlet end of the primary feed water pump 2 is connected to the low-temperature water tank 1, and the water outlet end of the primary feed water pump 2 is connected to the water inlet end of the heat exchange tank 3. The air inlet end of the heat exchange tank 3 is connected to the heat dissipation outlet 8 of the suspension fan through an air duct, and an air outlet valve is installed on the air duct. The water outlet end of the heat exchange tank 3 is connected to the water inlet end of the secondary feed water pump 5, and the water outlet end of the secondary feed water pump 5 is connected to the hot water tank 6. Moreover, the low-temperature water tank 1 stores low-temperature demineralized water, which can reduce the generation of water scale. In addition, the primary feed water pump 2 is connected to a feed water pump intelligent adjustment system 21, and the air outlet end of the heat exchange tank 3 is connected to a temperature control system 7. The feed water pump intelligent adjustment system 21 and the temperature control system 7 are wirelessly connected to adjust the flow rate of the primary feed water pump 2 according to the temperature change. An inlet valve is provided at the water inlet end of the heat exchange tank 3, and an outlet valve is provided at the water outlet end of the heat exchange tank 3. The primary feed water pump 2 pumps low-temperature water from the low-temperature water tank 1 into the heat exchange tank 3. The high-temperature air at the heat dissipation outlet 8 of the suspension fan enters the heat exchange tank 3 to exchange heat with the low-temperature water. The low-temperature water absorbs heat in the heat exchange tank 3 and becomes high-temperature water, and then enters the hot water storage tank 4. The secondary feed water pump 5 pumps the high-temperature water from the hot water storage tank 4 into the hot water tank 6, thereby realizing the recovery and utilization of the waste heat of the suspension fan.

[0023] Meanwhile, a water inlet pipe 31 is provided on the side wall of the water inlet end of the heat exchange tank 3. The water inlet pipe 31 extends into the heat exchange tank 3. A water outlet pipe 33 is provided on the side wall of the water outlet end of the heat exchange tank 3. The water outlet pipe 33 extends into the heat exchange tank 3. The water inlet pipe 31 is located at the top of the heat exchange tank 3, and the water outlet pipe 33 is located at the bottom of the heat exchange tank 3. The air inlet end of the heat exchange tank 3 is located at the bottom end of the heat exchange tank 3, and the air outlet end of the heat exchange tank 3 is located at the top end of the heat exchange tank 3. During heat exchange, low-temperature water flows into the heat exchange tank 3 from the top of the heat exchange tank 3 and then flows out from the bottom of the heat exchange tank 3. The high-temperature air from the heat dissipation outlet 8 of the suspension fan enters the heat exchange tank 3 from the bottom end of the heat exchange tank 3 and then is discharged from the top end of the heat exchange tank 3. Meanwhile, a support rod 37 is connected between the water outlet branch pipe 34 and the bottom of the heat exchange tank 3, and the support rod 37 can play a supporting role. Meanwhile, a heat insulation layer is provided on the outer surface of the heat exchange tank 3, and the heat insulation layer can reduce the heat loss of the heat exchange tank 3.

[0024] In addition, a plurality of water inlet branch pipes 32 are communicated with the water inlet pipe 31, and a plurality of water outlet branch pipes 34 are communicated with the water outlet pipe 33. A plurality of heat exchange pipes 35 are communicated between the water inlet branch pipes 32 and the water outlet branch pipes 34. The heat exchange pipes 35 are arranged vertically. A plurality of heat absorption fins 36 are arranged between the plurality of heat exchange pipes 35. The heat absorption fins 36 are connected to the plurality of heat exchange pipes 35 by welding. The plurality of heat absorption fins 36 are arranged at intervals along the length direction of the heat exchange pipes 35. The plurality of heat exchange pipes 35 can increase the heat absorption area, and the heat absorption fins 36 can further increase the heat absorption area of the heat exchange pipes 35, and can transfer the heat in the high-temperature air to the low-temperature water to the greatest extent. Meanwhile, the edge of the heat absorption fin 36 is connected to the inner wall of the heat exchange tank 3, and a plurality of through holes 361 are formed in the heat absorption fin 36, which can increase the area of the heat absorption fin 36, and the through holes 361 can facilitate the flow of high-temperature air. And the edge of the heat absorption fin 36 is inclined, which can further increase the area of the heat absorption fin 36. In addition, the heat absorption fin 36 is made of aluminum, and aluminum has a high thermal conductivity and better heat exchange effect, while the heat exchange pipe 35 is made of stainless steel, and stainless steel is corrosion-resistant and has a high service life.

[0025] The implementation principle of a suspension fan waste heat recovery device according to an embodiment of the present invention is as follows: The primary water pump 2 pumps low-temperature water from the low-temperature water tank 1 into the heat exchange tank 3. The high-temperature air from the heat dissipation outlet 8 of the suspension fan enters the heat exchange tank 3 to exchange heat with the low-temperature water. The low-temperature water absorbs heat in the heat exchange tank 3 and becomes high-temperature water, and then enters the hot water storage tank 4. The secondary water pump 5 pumps the high-temperature water from the hot water storage tank 4 into the hot water tank 6, thereby realizing the recovery and utilization of the waste heat of the suspension fan heat dissipation.

[0026] As described above, it is only the preferred embodiment of the present utility model, and there is no restriction on the present utility model in any form. Although the present utility model is disclosed above with the preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, when making some changes or modifications using the above-disclosed technical content to equivalent embodiments of equivalent changes, but as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A suspended fan waste heat recovery device, characterized in that: The invention comprises a low-temperature water tank (1), a primary water supply pump (2), a heat exchange tank (3), a hot water storage tank (4), a secondary water supply pump (5), and a hot water tank (6); the water inlet end of the primary water supply pump (2) is connected to the low-temperature water tank (1); the water outlet end of the primary water supply pump (2) is connected to the water inlet end of the heat exchange tank (3); the air inlet end of the heat exchange tank (3) is connected to the heat dissipation outlet (8) of the suspended fan; the water outlet end of the heat exchange tank (3) is connected to the water inlet end of the secondary water supply pump (5); and the water outlet end of the secondary water supply pump (5) is connected to the hot water tank (6).

2. A suspended fan waste heat recovery device according to claim 1, characterized in that: The water inlet end of the heat exchange tank (3) is provided with a water inlet pipe (31), the water inlet pipe (31) extends into the heat exchange tank (3), and the water inlet pipe (31) is connected to a plurality of water inlet branch pipes (32); the water outlet end of the heat exchange tank (3) is provided with a water outlet pipe (33), the water outlet pipe (33) extends into the heat exchange tank (3), and the water outlet pipe (33) is connected to a plurality of water outlet branch pipes (34); and a plurality of heat exchange tubes (35) are connected between the water inlet branch pipe (32) and the water outlet branch pipe (34).

3. A suspended fan waste heat recovery device according to claim 2, characterized in that: The water inlet pipe (31) is located at the top of the side wall of the heat exchange tank (3), the water outlet pipe (33) is located at the bottom of the side wall of the heat exchange tank (3), the air inlet end of the heat exchange tank (3) is located at the bottom end of the heat exchange tank (3), and the air outlet end of the heat exchange tank (3) is located at the top end of the heat exchange tank (3).

4. The waste heat recovery device for a suspended fan according to claim 2 is characterized in that: A plurality of heat absorbing sheets (36) are arranged between the plurality of heat exchange tubes (35); the heat absorbing sheets (36) are connected to the plurality of heat exchange tubes (35); and the plurality of heat absorbing sheets (36) are arranged at intervals along the length direction of the heat exchange tubes (35).

5. The waste heat recovery device for a suspended fan according to claim 4 is characterized in that: The edge of the heat absorbing plate (36) is connected to the inner wall of the heat exchange tank (3), and a plurality of through holes (361) are provided on the heat absorbing plate (36).

6. The waste heat recovery device for a suspended fan according to claim 5 is characterized in that: The edge of the heat absorbing sheet (36) is arranged to be inclined.

7. The waste heat recovery device for a suspended fan according to claim 3 is characterized in that: A support rod (37) is connected between the water outlet branch pipe (34) and the bottom of the heat exchange tank (3).

8. The waste heat recovery device for a suspended fan according to claim 4 is characterized in that: The heat absorbing sheet (36) is made of aluminum, and the heat exchange tube (35) is made of stainless steel.

9. The waste heat recovery device for a suspended fan according to claim 1, characterized in that: The outer surface of the heat exchange tank (3) is provided with a heat insulation layer.

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