Ventilator shell anti-icing device and installation method

Abstract

The invention discloses a ventilator shell anti-icing device and an installation method, and relates to the technical field of air blowers. An anti-icing device for a ventilator shell comprises a heating module, a supporting module and an emptying module. The heating module comprises a coil pipe, and heating fluid is arranged in the coil pipe; the coil pipe is pressed and connected to the bottom position of the outer side wall of the fan shell through the supporting module; the emptying module comprises an emptying pipe, one end of the emptying pipe is connected with the fan shell, and a valve body is installed at the other end of the emptying pipe. The emptying pipe is communicated with the bottom of the inner cavity of the fan shell. The supporting module enables the heating module to be installed at the bottom of the outer side wall of the fan shell, the heating module heats water in the fan shell and an inner cavity of the fan shell, liquid water is prevented from being frozen into ice or solid ice is prevented from being melted into liquid water, and then the liquid water is discharged out of the fan through the emptying module, so that the anti-freezing effect is achieved, and the service life of the fan is prolonged. And the operation safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of blowers, and in particular to an anti-icing device for a casing of a ventilator and an installation method thereof. Background Art

[0002] Centrifugal fans are widely used mechanical equipment in industrial production. They need to be optimized and upgraded according to the needs of the owners to meet process requirements and facilitate user use.

[0003] When the fan is located in an area with high altitude, low temperature, large temperature difference and other areas prone to high humidity, water will accumulate at the bottom of the inner cavity of the fan casing. The water initially gathers into liquid water, and forms solid ice after the ambient temperature drops. When the fan is running, the solid ice is sucked into the impeller position in the form of crushed ice, and then continuously collides and rubs against the impeller and bearings, causing collision damage and rust to the impeller and bearings (when the bearing is running, the friction makes its own temperature higher than the ambient temperature, and the crushed ice melts into liquid water when it encounters heat), which reduces the service life of the fan and poses a safety hazard. Summary of the invention

[0004] In order to overcome the problem of "water accumulating at the bottom of the inner cavity of the fan casing and freezing into ice" existing in the above-mentioned background technology, the present invention provides an anti-icing device for the fan casing and an installation method.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A ventilator casing anti-icing device comprises a heating module, a supporting module and an emptying module; the heating module comprises a coil, wherein a heating fluid is arranged in the coil; the supporting module presses the coil to the bottom position of the outer side wall of the fan casing; the emptying module comprises an emptying pipe, wherein one end of the emptying pipe is connected to the fan casing and the other end is provided with a valve body; the emptying pipe is communicated with the bottom of the inner cavity of the fan casing.

[0006] As a further optimization scheme of the present invention, the coil includes a first U-shaped tube, a second U-shaped tube and a transverse tube, the first U-shaped tube and the second U-shaped tube are both upright and parallel to each other; a first plug-in groove is provided between the first U-shaped tube and the second U-shaped tube; the bending position of the first U-shaped tube and the bending position of the second U-shaped tube are respectively arranged on both sides of the opening end of the first plug-in groove; the two ends of the transverse tube are respectively vertically connected and communicated with the first U-shaped tube and the second U-shaped tube.

[0007] As a further optimization solution of the present invention, the first U-shaped tube and the second U-shaped tube are respectively arranged at two opposite side walls of the fan casing.

[0008] As a further optimization solution of the present invention, the ends of the first U-shaped tube and the second U-shaped tube are respectively provided with flanges for connecting to a circulation pipeline.

[0009] As a further optimization scheme of the present invention, the first U-shaped tube includes an upper tube, a lower tube and a C-shaped tube; the two ends of the C-shaped tube are respectively connected and communicated with the upper tube and the lower tube; the lower tube is located directly below the upper tube; and a bending portion for heating the exhaust pipe is provided in the middle of the lower tube.

[0010] As a further optimization solution of the present invention, two ends of the bending portion are respectively connected to and communicated with the lower tube.

[0011] As a further optimization solution of the present invention, the bending portion is a curved tube structure bent in a boot shape, and the bending portion includes a fitting portion for fitting the drain pipe.

[0012] As a further optimization scheme of the present invention, a second insertion groove is provided between the bending portion and the lower tube; the opening direction of the second insertion groove and the opening direction of the first insertion groove are parallel to each other and point in the same direction; the fitting portion is located at one end of the second insertion groove away from the C-shaped tube.

[0013] As a further optimization scheme of the present invention, the heating module also includes a pressing block, which is provided with a first protrusion at one end and an inclined surface at the other end, the first protrusion is clamped in the gap between the upper tube and the lower tube and abuts against the support module, and the inclined surface is pressed against the fitting portion so that the fitting portion fits with the emptying pipe; a second protrusion is provided at the lower end of the pressing block, and the second protrusion is clamped in the inner cavity of the bending portion.

[0014] A method for installing an anti-icing device for a ventilator casing, that is, the steps of installing the anti-icing device for the ventilator casing on the fan casing include: S1, vertically installing the exhaust pipe at the bottom position of the outer wall of the fan casing; S2, sleeve the coil at the bottom position of the outer wall of the fan casing, insert the fan casing into the first plug-in slot, and insert the exhaust pipe into the second plug-in slot at the same time; S3, buckle a plurality of the support modules onto the U-shaped tube and the second U-shaped tube respectively, and then press the support modules onto the side wall of the fan casing and pre-connect them; S4, insert the pressing block into the gap between the upper tube and the lower tube and the inner cavity of the bending portion, so that the inclined surface is pressed onto the oblique upper side of the fitting portion, so that the fitting portion fits with the exhaust pipe; S5, fixedly connect the support module to the fan casing.

[0015] In summary, the present invention has at least one of the following benefits: (1) The present invention has a simple structure and reliable functions. The support module installs the heating module at the bottom of the outer wall of the fan casing. The heating module heats the moisture in the fan casing and the inner cavity of the fan casing to prevent liquid water from freezing into ice or melt the solid ice into liquid water. The liquid water is then discharged from the fan through the emptying module, thereby achieving an antifreeze effect, increasing the service life of the fan, and improving operational safety.

[0016] (2) The first U-shaped tube and the second U-shaped tube are arranged at two opposite side walls of the fan casing, so as to achieve synchronous and uniform heating of both sides of the fan casing, avoid the problem of local freezing in the fan casing caused by uneven heating, and improve the antifreeze and thawing effects.

[0017] (3) A bent portion for heating the drain pipe is provided in the middle of the lower pipe. The lower pipe and the bent portion are arranged on the upper and lower sides of the drain pipe and heat the drain pipe, thereby avoiding the problem that the inner cavity of the drain pipe is frozen and the liquid water in the inner cavity of the fan casing cannot be discharged, thereby improving the anti-freezing ability and thawing speed.

[0018] (4) The bent portion includes a fitting portion for fitting to the exhaust pipe, and the fitting portion is used to increase the contact area between the bent portion and the exhaust pipe to further improve the heat conduction efficiency.

[0019] (5) The first protrusion at one end of the pressing block is in contact with the supporting module, and the inclined surface at the other end is pressed against the bent portion, so that the bent portion and the exhaust pipe are closely fitted, thereby increasing the heat conduction efficiency; when the fan is working, the bent portion and the exhaust pipe are prevented from colliding with each other, further avoiding impact damage and noise.

[0020] (6) The opening direction of the second plug-in slot is parallel to the opening direction of the first plug-in slot and points in the same direction. Therefore, when the coil is moved laterally to be mounted on the surface of the fan casing, the exhaust pipe can be plugged into the second plug-in slot, thereby having the technical advantage of convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present application is further described below with reference to the accompanying drawings: Figure 1 It is a front view schematic diagram of the overall structure of the present invention; Figure 2 This is a right view schematic diagram of the coil installation position; Figure 3 It is the installation position and structure diagram of the coil, support fasteners and drain pipe; Figure 4 Schematic diagram of coil structure; Figure 5 Schematic diagram of the position and structure of the bending part; Figure 6 It is a schematic diagram of the position and structure of the pressing block; Figure 7It is a right side elevational view of the state where the supporting fastener is fastened to the coil; Figure 8 It is a right side view schematic diagram of the vertical section structure of the support fastener; Fig. 9 A schematic diagram of the structure of the first U-shaped tube covered by the support fastener; Fig.10 It is a schematic diagram of the connection structure between the plug-in block and the slider.

[0022] Description of reference numerals: In the figure, 1. Heating module; 11. Coil; 110. First plug-in slot; 1101. First U-shaped tube; 11011. Upper tube; 11012. Lower tube; 11013. C-shaped tube; 1102. Second U-shaped tube; 1103. Horizontal tube; 1104. Flange; 1105. Bending portion; 11051. Fitting portion; 11052. Second plug-in slot; 1106. Stop convex strip; 1107. Plug-in block; 11071. Sliding block; 11072. Filling block; 11073. Vertical plate; 12. Press block; 121. Inclined surface; 122. First protrusion; 123. Second protrusion; 2. Support module; 21. Support fastener; 211. First buckle block; 2111. Buckle groove; 212. Second buckle block; 213. Heat insulation layer; 22. Heat conduction block; 3. Drain module; 31. Drain pipe; 4. Fan; 41. Fan casing; 42. Fan motor. DETAILED DESCRIPTION

[0023] Based on the above structural features of the present application, the implementation methods of the present application are further described: Reference Figure 1-2 This embodiment provides a ventilator casing anti-icing device, comprising a heating module 1, a supporting module 2 and an emptying module 3. The heating module 1 is used to increase the temperature of the bottom of the fan casing 41 to prevent ice formation and melt the ice that has frozen at the bottom of the inner cavity of the fan casing 41; the supporting module 2 is used to install the heating module 1 on the outer wall of the fan casing 41; and the emptying module 3 is used to discharge the liquid water in the fan casing 41.

[0024] Reference Figure 1 to Figure 3The fan 4 includes a fan casing 41, fan blades disposed in the fan casing 41, and a fan motor 42 connected to the fan blades. The fan motor 42 drives the fan blades to rotate to blow or exhaust air to meet the needs of the usage scenario. The heating module 1 includes a coil 11, and a heating fluid is provided in the coil 11; the support module 2 presses the coil 11 to the bottom position of the outer wall of the fan casing 41. Since the fan casing 41 is usually in a volute shape, liquid water and / or solid ice accumulates at the bottom of the inner cavity of the fan casing 41 under the action of gravity. Therefore, the heating module 1 is installed at the bottom of the fan casing 41 through the support module 2, so as to heat the liquid water and / or solid ice at the bottom of the inner cavity of the fan casing 41.

[0025] Reference Figure 1 to Figure 3 The emptying module 3 includes an emptying pipe 31, one end of which is connected to the fan housing 41 and the other end of which is provided with a valve body; the emptying pipe 31 is connected to the bottom of the inner cavity of the fan housing 41. When the valve body is opened, liquid water and small particles of solid ice (with a diameter smaller than the inner diameter of the emptying pipe 31) at the bottom of the inner cavity of the fan housing 41 can be discharged; when the valve body is closed, unfiltered air from the outside can be prevented from entering the inner cavity of the fan housing 41, thereby preventing dust from entering the inner cavity of the fan housing 41, so as to reduce unnecessary wear of the fan blades and the bearings connected to the fan blades.

[0026] The valve body is a manual valve or an electric control valve.

[0027] Reference Figure 3 and Figure 4 The coil 11 includes a first U-shaped tube 1101, a second U-shaped tube 1102 and a transverse tube 1103. The first U-shaped tube 1101 and the second U-shaped tube 1102 are both vertically arranged and arranged parallel to each other; a first plug-in slot 110 for accommodating the fan housing 41 is arranged between the first U-shaped tube 1101 and the second U-shaped tube 1102. The bending position of the first U-shaped tube 1101 and the bending position of the second U-shaped tube are respectively arranged on both sides of the opening end of the first plug-in slot 110; the two ends of the transverse tube 1103 are respectively vertically connected and communicated with the first U-shaped tube 1101 and the second U-shaped tube 1102 (for example, through an integrated fixed connection or a threaded fixed connection). The first U-shaped tube 1101, the transverse tube 1103, and the second U-shaped tube 1102 are sequentially connected to form a fluid channel to guide the heating fluid, so that as much as possible of the bottom of the fan housing 41 is placed in the heat radiation field of the heating fluid to improve the antifreeze effect and the thawing effect.

[0028] Reference Figure 3 and Figure 4 The first U-shaped tube 1101 and the second U-shaped tube 1102 are respectively arranged at two opposite side walls of the fan casing 41, so as to achieve synchronous and uniform heating of both sides of the fan casing 41, avoiding the problem of local freezing in the fan casing 41 caused by uneven heating, so as to improve the antifreeze and thawing effects.

[0029] Reference Figure 3 and Figure 4 , the ends of the first U-shaped tube 1101 and the second U-shaped tube 1102 are respectively provided with flanges 1104 for connecting the circulation pipeline. The circulation pipeline includes an input pipe and an output pipe, the input pipe and the first U-shaped tube 1101 are detachably connected through the flange 1104, and the output pipe and the second U-shaped tube 1102 are detachably connected through the flange 1104. When the heating fluid uses self-heated hot water, the other end of the input pipe is connected and communicated with the liquid pump, the liquid pump is connected and communicated with the water tank, and the water tank is connected and communicated with the output pipe; an electric heater is provided in the water tank, and the electric heater and the liquid pump are respectively connected and communicated with an external power supply. When the heating fluid uses industrial hot steam, the other end of the input pipe is connected and communicated with the exhaust pipe of the boiler plant, and the output pipe is connected and communicated with the return steam pipe of the boiler plant. When the heating fluid uses industrial hot water, the other end of the input pipe is connected and communicated with the drainage pipe of the boiler plant, and the output pipe is connected and communicated with the return water pipe of the boiler plant.

[0030] Reference Figure 4 and Figure 5 The first U-shaped tube 1101 includes an upper tube 11011, a lower tube 11012 and a C-shaped tube 11013; the two ends of the C-shaped tube 11013 are respectively connected and communicated with the upper tube 11011 and the lower tube 11012 (for example, through an integral fixed connection or a threaded fixed connection); the lower tube 11012 is located directly below the upper tube 11011; a bending portion 1105 for heating the exhaust pipe 31 is provided in the middle of the lower tube 11012, and the bending portion 1105 extends downward. At least part of the bending portion 1105 is located below the exhaust pipe 31, so that the lower tube 11012 and the bending portion 1105 are respectively arranged on the upper and lower sides of the exhaust pipe 31 and heat the exhaust pipe 31. The drain pipe 31 is connected and communicated with the bottom end of the inner cavity of the fan casing 41, so the installed coil 11 is located above the drain pipe 31 (liquid water or solid ice cannot be contained below the drain pipe 31, so there is no need to set the coil 11 in a large area), and the drain pipe 31 can only receive heat from the coil 11 from the top (i.e., one side), while the fan casing 41 adopts the form of heating on both sides, resulting in the speed at which the ice / water in the inner cavity of the drain pipe 31 absorbs heat lower than the speed at which the ice / water in the inner cavity of the fan casing 41 absorbs heat, that is, compared with the water in the fan casing 41, the water in the drain pipe 31 will freeze into ice earlier, or compared with the ice in the fan casing 41, the ice in the drain pipe 31 will melt into water later, so the ice in the drain pipe 31 will hinder the discharge of the water in the inner cavity of the fan casing 41. This problem will cause the water in the inner cavity of the fan casing 41 to be discharged late or unable to be discharged.

[0031] Reference Figure 5 The two ends of the bending portion 1105 are respectively connected and communicated with the lower tube 11012, that is, the heating fluid will flow through the inner cavity of the bending portion 1105, thereby heating the upper and lower sides of the drain pipe 31 to prevent the water in the drain pipe 31 from freezing into ice or accelerate the fusion of ice in the drain pipe 31 into water.

[0032] Reference Figure 5 The bending portion 1105 is a curved tube structure bent in a boot shape, and the bending portion 1105 includes a fitting portion 11051 for fitting the exhaust pipe 31; the fitting portion 11051 is used to increase the contact area between the bending portion 1105 and the exhaust pipe 31 to further improve the heat conduction efficiency.

[0033] Reference Figure 5 A second insertion groove 11052 is provided between the bending portion 1105 and the lower tube 11012; the opening direction of the second insertion groove 11052 is parallel to and points in the same direction as the opening direction of the first insertion groove 110. The fitting portion 11051 is located at the end of the second insertion groove 11052 away from the C-shaped tube 11013, and when the exhaust pipe 31 abuts at the deepest position of the second insertion groove 11052, it abuts against the fitting portion 11051, thereby avoiding the problem of the fitting portion 11051 and the exhaust pipe 31 colliding with each other due to the vibration generated by the fan 4 during operation, thereby improving the service life of the present invention, reducing the generation of noise, and at the same time, stable fitting can increase the heat conduction efficiency between the exhaust pipe 31 and the fitting portion 11051.

[0034] Reference Figure 6 The heating module 1 also includes a pressing block 12, and a first protrusion 122 is provided at one end of the pressing block 12 and an inclined surface 121 is provided at the other end. The inclined surface 121 and the first protrusion 122 are provided at the left and right ends of the pressing block 12. The first protrusion 122 is clamped in the gap between the upper tube 11011 and the lower tube 11012 and abuts against the support module 2. The top and bottom surfaces of the first protrusion 122 are adapted to fit the bottom surface of the upper tube 11011 and the top surface of the lower tube 11012, thereby preventing the first protrusion 122 from shaking and achieving a stable connection; the inclined surface 121 is crimped with the fitting portion 11051 so that the fitting portion 11051 fits with the exhaust pipe 31 to improve the heat conduction efficiency. A second protrusion 123 is provided at the lower end of the pressing block 12, and the second protrusion 123 is clamped in the inner cavity of the bending portion 1105; refer to Figure 6 From the perspective shown, the left side wall of the second protrusion 123 is an inclined surface 121, which is adapted to and crimped with the fitting portion 11051, and the right side wall of the second protrusion 123 is adapted to and crimped with the bending portion 1105, thereby achieving a stable connection.

[0035] Reference Figure 6 The pressing block 12 and the first protrusion 122 are fixedly connected (for example, by an integral fixed connection or by a bolt fixed connection); the pressing block 12 and the second protrusion 123 are fixedly connected (for example, by an integral fixed connection or by a bolt fixed connection). The pressing block 12, the first protrusion 122 and the second protrusion 123 are all made of wood, plastic or hollow metal materials, so as to reduce the weight as much as possible while ensuring the abutment function, and avoid bending the lower tube 11012.

[0036] Reference Figure 6 The side wall of the fan housing 41 is provided with a stop convex strip 1106 (for example, connected by bolts). The stop convex strip 1106 is adapted to fit with the top surface of the upper tube 11011, so that when the coil 11 is inserted horizontally into the fan housing 41, the stop convex strip can guide the upper tube 11011; and the stop convex strip 1106 is also located above the pressing block 12, that is, the stop convex strip 1106 can apply a downward supporting force to the pressing block 12 through the upper tube 11011, and the support module 2 can apply a leftward supporting force to the pressing block 12, and the combined force points to the fitting portion 11051 at the lower left, so that the inclined surface 121 pushes the fitting portion 11051 to press the exhaust pipe 31, so as to improve the heat conduction efficiency.

[0037] Reference Figure 7 and Figure 8 The support module 2 includes a support fastener 21, which includes a first fastening block 211 and a second fastening block 212 that are mutually fastened and detachably connected (for example, detachably connected by bolts), and a receiving gap is provided between the first fastening block 211 and the second fastening block 212, and a heat insulation layer 213 is provided in the receiving gap; a fastening groove 2111 is provided on the side wall of the first fastening block 211 away from the second fastening block 212, and the fastening groove 2111 can be adapted to be fastened on the surface of the first U-shaped tube 1101 or the second U-shaped tube 1102, so as to play a role in limiting the installation of the coil 11 when installing the coil 11. The cross-section of the receiving gap and the cross-section of the heat insulation layer 213 are both C-shaped, and the fastening groove 2111 is placed in the inner cavity of the C-shaped heat insulation layer 213, so as to reduce the problem of heat loss of the heating fluid in the coil 11 to the outside, and ensure that the heat of the heating fluid in the coil 11 is transferred to the fan housing 41 and the ice / water in the inner cavity of the fan housing 41 as much as possible.

[0038] The coil 11 and the fan casing 41 are heat-conducted in the form of direct contact, indirect contact, or a combination thereof (eg, partial direct contact, partial indirect contact).

[0039] Reference Figure 7 and Figure 8 A heat conducting block 22 is provided in the buckling groove 2111 and is disposed between the coil 11 and the fan housing 41 to increase the indirect contact area between the coil 11 and the fan housing 41, thereby improving the efficiency of heat exchange.

[0040] Reference Fig. 9 The support fastener 21 covers the first U-shaped tube 1101 and the second U-shaped tube 1102 as much as possible without hindering the emptying tube 31 from being inserted into the second plug-in groove 11052 to improve the heat insulation effect.

[0041] Reference Figure 6Since the volume of the drain pipe 31 is much lower than the volume of the bottom of the inner cavity of the fan housing 41, that is, the number of water molecules in the drain pipe 31 is less than the number of water molecules at the bottom of the inner cavity of the fan housing 41; therefore, compared with the water at the bottom of the inner cavity of the fan housing 41, the water in the drain pipe 31 is more likely to freeze due to heat loss. The lower tube 11012, the fitting portion 11051 and the bent portion 1105 work together (in a form of more than 180 degrees) to cover the drain pipe 31 and transfer heat to the drain pipe 31, thereby ensuring that the inner cavity of the drain pipe 31 will not freeze.

[0042] A method for installing a fan casing anti-icing device, that is, the steps of installing the fan casing anti-icing device on the fan casing 41 include: S1. Vertically install the exhaust pipe 31 at the bottom of the outer wall of the fan casing 41 (for example, by welding or threaded connection).

[0043] S2. Move the coil 11 laterally so that the coil 11 is sleeved on the bottom of the outer wall of the fan casing 41, insert the fan casing 41 into the first plug-in groove 110, crimp the cross pipe 1103 to the bottom of the outer wall of the fan casing 41, insert the exhaust pipe 31 into the second plug-in groove 11052, and fit the stop ridge 1106 with the top surface of the upper tube 11011.

[0044] S3. Take a number of support modules 2, buckle the support modules 2 onto the U-shaped tube and the second U-shaped tube 1102 respectively, and then press the support modules 2 onto the side wall of the fan casing 41 for pre-connection.

[0045] S4, insert the pressing block 12 into the gap between the upper tube 11011 and the lower tube 11012 and the inner cavity of the bending part 1105, so that the inclined surface 121 is pressed against the oblique upper part of the fitting part 11051, so that the fitting part 11051 fits with the exhaust pipe 31; then connect the pressing block 12 with the fan housing 41 and the support fastener 21 respectively by bolts. The thickness of the pressing block 12 and the support fastener 21 is greater than that of the fan housing 41, so the maximum depth of the screw hole that can be opened on the support fastener 21 is greater than the maximum depth of the screw hole that can be opened on the fan housing 41, so the bolt has greater tensile strength when installed in the bolt of the support fastener 21, so as to improve the installation stability of the pressing block 12 and avoid overload deformation of the screw hole on the fan housing 41.

[0046] S5. Fixedly connect the support module 2 to the fan casing 41.

[0047] Reference Figure 6The pre-connection in step S3 means: the side wall of the fan housing 41 is provided with a preset screw hole, the support fastener 21 is provided with a plug hole, and the user penetrates the installation bolt through the plug hole and screws it with the preset screw hole without tightening it. The purpose of not tightening it is to retain the lateral mobility of the coil 11 (because the inclined surface 121 will press the fitting part 11051 in step S4, when the elastic deformation of the fitting part 11051 and the lower tube 11012 is not enough to make the fitting part 11051 and the exhaust pipe 31 fit tightly, the entire coil 11 needs to be moved horizontally to the left to achieve the fit of the fitting part 11051 and the exhaust pipe 31, which cannot be achieved if the support module 2 is used directly to fix the coil 11).

[0048] The fixed connection in step S5 refers to tightening the mounting bolts with the preset screw holes, thereby achieving a fixed connection between the support module 2, the coil 11 and the fan housing 41, and preventing the support module 2, the coil 11 and the fan housing 41 from colliding with each other during the working vibration of the fan 4, causing damage and noise.

[0049] When the heating fluid is hot water, the temperature is 40-80 degrees Celsius, so it has excellent antifreeze and thawing performance and avoids the generation of bubbles. When the heating fluid is hot steam, the temperature is above 60 degrees Celsius, so it can provide sufficient heat.

[0050] The heat conducting block 22 is made of copper-containing metal material, so it has excellent heat conducting performance.

[0051] The heat insulating layer 213 is made of sponge material, foam plastic material, etc., so it has excellent heat insulating performance.

[0052] Reference Figure 5 and Figure 6 When the drain pipe 31 is inserted into the second insertion groove 11052, the drain pipe 31 can exert an upward supporting force on the lower pipe 11012, thereby supporting the coil 11 together with the support module 2, thereby improving the structural stability.

[0053] Reference Figure 6 and Figure 8 The end surface of the first protrusion 122 abuts against the first buckling block 211 and / or the second buckling block 212 .

[0054] Reference Figure 6 The stop ridge 1106 abuts against the upper surface of the upper tube 11011 to prevent the upper tube 11011 from convexly deforming under the upward reaction force of the pressing block 12.

[0055] Reference Figure 5 and Fig. 9A plug-in block 1107 is inserted in the second plug-in groove 11052, and the end face of the plug-in block 1107 is adapted to fit and abut against the exhaust pipe 31. The top and bottom surfaces of the plug-in block 1107 are respectively provided with arc-shaped grooves adapted to the bottom surface of the lower tube 11012 and the top surface of the bending portion 1105. The top and bottom surfaces of the plug-in block 1107 are respectively fitted with the bottom surface of the lower tube 11012 and the top surface of the bending portion 1105 using the arc-shaped grooves, thereby increasing the contact area and improving the heat conduction efficiency between the lower tube 11012 and the plug-in block 1107 and between the bending portion 1105 and the plug-in block 1107. The end face of the plug-in block 1107 fits with the drain pipe 31, so that the lower tube 11012, the fitting portion 11051, the bending portion 1105, and the plug-in block 1107 cover the outer wall of the drain pipe 31 in a 360-degree state and transfer heat to the ice / water in the drain pipe 31 to prevent the drain pipe 31 from freezing.

[0056] Reference Fig.10 The end surface of the plug-in block 1107 is provided with an arc surface adapted to the side wall of the exhaust pipe 31.

[0057] Reference Fig. 9 and Fig.10 The plug-in block 1107 is provided with a horizontal strip hole, and a slider 11071 is provided in the strip hole. The slider 11071 is fixedly connected to the fan casing 41 (for example, fixedly connected by bolts), and the slider 11071 can slide relatively in the strip hole; a filling block 11072 is provided at one end of the strip hole close to the exhaust pipe 31, and there are multiple optional filling blocks 11072. Different filling blocks 11072 have different widths. The user plugs the filling block 11072 of appropriate width into the strip hole, so that one end of the filling block 11072 is crimped against the end face of the strip hole, and the other end is crimped against the end face of the slider 11071, thereby pushing the plug-in block 1107 to press the exhaust pipe 31, thereby increasing the contact area and thermal conductivity between the plug-in block 1107 and the exhaust pipe 31.

[0058] The plug-in block 1107 is made of copper-containing metal material, so it has excellent thermal conductivity; the slider 11071 is made of rigid material, such as 45 steel, so it has excellent supporting ability; the filling block 11072 is made of wood material, which has slight elasticity while ensuring the supporting function.

[0059] Reference Fig.10 The outer wall of the slider 11071 is fixedly connected with a vertical plate 11073 (for example, fixedly connected by bolts), the height of the vertical plate 11073 is greater than the width of the strip hole, and the top and bottom ends of the inner wall of the vertical plate 11073 are respectively attached to the outer wall of the plug-in block 1107 and slidably connected, thereby ensuring that the plug-in block 1107 will not fall off and ensuring the ability of the plug-in block 1107 to slide horizontally.

[0060] A method for installing an anti-icing device for a fan casing, further comprising the following steps: S6. Install the slider 11071 in the second plug-in slot 11052 so that the slider 11071 is fixedly connected to the fan housing 41; sleeve the plug-in block 1107 on the outer periphery of the slider 11071 so that the slider 11071 is placed in the strip hole; and install the vertical plate 11073 vertically on the outer side wall of the slider 11071.

[0061] S7. Insert the filling block 11072 into one end of the strip hole close to the drain pipe 31 , and support the plug-in block 1107 to be close to the drain pipe 31 .

[0062] The present invention has a simple structure and reliable functions. The support module 2 installs the heating module 1 at the bottom of the outer wall of the fan casing 41. The heating module 1 heats the fan casing 41 and the moisture in the inner cavity of the fan casing 41 to prevent liquid water from freezing into ice or melt the solid ice into liquid water. The liquid water is then discharged from the fan 4 through the emptying module 3, thereby achieving an antifreeze effect, increasing the service life of the fan 4, and improving operational safety.

[0063] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0064] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" 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, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] To sum up, for those skilled in the art, according to the guidance of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions and deformations made to the present invention still fall within the protection scope of the present invention.

Claims

1. A fan casing anti-icing device, characterized in that: It comprises a heating module (1), a supporting module (2) and an emptying module (3); The heating module (1) comprises a coil (11), wherein a heating fluid is arranged in the coil (11); the support module (2) presses the coil (11) to the bottom of the outer wall of the fan casing (41); The exhaust module (3) comprises an exhaust pipe (31), one end of the exhaust pipe (31) is connected to the fan casing (41), and the other end is provided with a valve body; the exhaust pipe (31) is in communication with the bottom of the inner cavity of the fan casing (41).

2. The anti-icing device for the fan casing according to claim 1, characterized in that: The coil (11) comprises a first U-shaped tube (1101), a second U-shaped tube (1102) and a transverse tube (1103); the first U-shaped tube (1101) and the second U-shaped tube (1102) are both vertically arranged and arranged parallel to each other; a first plug-in slot (110) is arranged between the first U-shaped tube (1101) and the second U-shaped tube (1102); a bending position of the first U-shaped tube (1101) and a bending position of the second U-shaped tube are arranged on both sides of an opening end of the first plug-in slot (110); and two ends of the transverse tube (1103) are respectively vertically connected to and communicated with the first U-shaped tube (1101) and the second U-shaped tube (1102).

3. The anti-icing device for the fan casing according to claim 2, characterized in that: The first U-shaped tube (1101) and the second U-shaped tube (1102) are respectively arranged at two opposite side walls of the fan casing (41).

4. The anti-icing device for the fan casing according to claim 3, characterized in that: The ends of the first U-shaped tube (1101) and the second U-shaped tube (1102) are respectively provided with flanges (1104) for connecting to a circulation pipeline.

5. The anti-icing device for the fan casing according to claim 4, characterized in that: The first U-shaped tube (1101) comprises an upper tube (11011), a lower tube (11012) and a C-shaped tube (11013); two ends of the C-shaped tube (11013) are respectively connected to and communicate with the upper tube (11011) and the lower tube (11012); the lower tube (11012) is located directly below the upper tube (11011); and a bent portion (1105) for heating the exhaust pipe (31) is provided in the middle of the lower tube (11012).

6. The anti-icing device for the fan casing according to claim 5, characterized in that: Both ends of the bending portion (1105) are respectively connected to and communicated with the lower tube (11012).

7. The anti-icing device for the fan casing according to claim 6, characterized in that: The bending portion (1105) is a curved tube structure that is bent into a boot shape, and the bending portion (1105) comprises a fitting portion (11051) for fitting to the drain pipe (31).

8. The anti-icing device for the fan casing according to claim 7, characterized in that: A second plug-in slot (11052) is provided between the bending portion (1105) and the lower tube (11012); the opening direction of the second plug-in slot (11052) and the opening direction of the first plug-in slot (110) are parallel to each other and point in the same direction; the fitting portion (11051) is located at an end of the second plug-in slot (11052) away from the C-shaped tube (11013).

9. The anti-icing device for the fan casing according to claim 8, characterized in that: The heating module (1) further comprises a pressing block (12), wherein one end of the pressing block (12) is provided with a first protrusion (122) and the other end is provided with an inclined surface (121), wherein the first protrusion (122) is clamped in the gap between the upper tube (11011) and the lower tube (11012) and abuts against the support module (2), and the inclined surface (121) is pressed against the fitting portion (11051) so that the fitting portion (11051) fits with the exhaust pipe (31); and a second protrusion (123) is provided at the lower end of the pressing block (12), wherein the second protrusion (123) is clamped in the inner cavity of the bending portion (1105).

10. A method for installing an anti-icing device for a fan casing, characterized in that: The step of installing the fan casing anti-icing device according to claim 9 on the fan casing (41) comprises: S1. Vertically install the exhaust pipe (31) at the bottom of the outer side wall of the fan casing (41); S2, sleeve the coil (11) onto the bottom of the outer wall of the fan casing (41), insert the fan casing (41) into the first insertion slot (110), and simultaneously insert the exhaust pipe (31) into the second insertion slot (11052); S3, buckling a plurality of the support modules (2) onto the U-shaped tube and the second U-shaped tube (1102) respectively, and then crimping the support modules (2) onto the side wall of the fan casing (41) for pre-connection; S4, inserting and disposing the pressing block (12) in the gap between the upper tube (11011) and the lower tube (11012) and in the inner cavity of the bending portion (1105), so that the inclined surface (121) is pressed against the upper side of the fitting portion (11051), thereby fitting the fitting portion (11051) against the drain pipe (31); S5. Fixedly connecting the support module (2) to the fan casing (41).

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