Cleaning device for collecting bee pollen
By designing a cleaning device for bee pollen collection, using the first cleaning component driven by the drive shaft and the motor and the second cleaning component of the brush, the problem of difficulty in cleaning pollen on the bleacher is solved, efficient cleaning and collection are achieved, and cleaning efficiency is improved.
Patent Information
- Application Number
- CN202421283550.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-06
AI Technical Summary
During bee pollen collection, it is difficult to completely clean the pollen adhered to the defouling device, resulting in low cleaning efficiency.
A cleaning device for collecting bee pollen is designed, including a first cleaning member and a second cleaning member, which loosens and drops the pollen adhered to the powder demulser by a drive shaft and a motor, and further cleaning and collection is achieved through a brush and a reciprocating screw.
Effectively clean the pollen adhered to the undulinator, especially those that are difficult to clean in dead corners, improves cleaning efficiency and prevents pollen from sticking again through the collection parts.
Smart Images

Figure CN222587412U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bee pollen collection, in particular to a cleaning device for collecting bee pollen. Background Art
[0002] Bee pollen is a granular substance formed by bees collecting pollen grains from plant stamens and carrying them back to the hive through their beaks, legs or feet, mixed with their own digestive enzymes and saliva. This substance is rich in the essence of plant pollen and also contains some biologically active substances of bees.
[0003] When pollen resources are abundant, once the bee colony has stored enough pollen, a pollen remover can be installed in front of the nest door. This device can effectively intercept 50% to 70% of the pollen collected by the bees. At the same time, a pollen tray is prepared and placed under the pollen remover frame to receive the intercepted pollen, thereby achieving the purpose of collection.
[0004] However, during the collection process, some pollen will adhere to the de-pollenizer, which is usually cleaned manually. However, manual cleaning will cause some dead corners on the de-pollenizer that are difficult to clean, resulting in low cleaning efficiency. Utility Model Content
[0005] The purpose of the utility model is to provide a cleaning device for collecting bee pollen to solve the problems raised in the above background technology.
[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0007] A cleaning device for collecting bee pollen, comprising a support platform, a box body fixedly connected above the support platform, the box body comprising a first chamber, a second chamber and a third chamber, the third chamber being located below the second chamber, the first chamber, the second chamber and the third chamber being in a communicating state, a box cover being arranged above the first chamber, a first motor and a second motor being fixedly connected to the outside of the box body respectively, a transmission shaft being arranged inside the first chamber, the transmission shaft being rotatably connected to the box body, one end of the transmission shaft being fixedly connected to the output end of the first motor, a bevel gear being fixedly connected to the transmission shaft, a partition being fixedly connected in the first chamber, a plurality of air inlets being arranged on the box body, an air inlet valve being fixedly connected inside the air inlet, a first cleaning component for cleaning pollen being connected in the first chamber, a second cleaning component for cleaning pollen being connected in the second chamber, and a collecting component for collecting pollen being connected in the third chamber.
[0008] When the de-powdering device needs to be cleaned, the box cover is opened, the de-powdering device is fixed by the first cleaning component, and then the box cover is closed. At this time, the first motor is started, and the first motor will transmit power to the first cleaning component through the transmission shaft, so that the pollen adhering to the dead corners of the de-powdering device is loosened and falls off. Then the de-powdering device is taken out from the inside of the first chamber, and placed in the inside of the second chamber. The de-powdering device is cleaned again by the second cleaning component. At the same time, while the first cleaning component and the second cleaning component are working, the collecting component will collect the scattered pollen to prevent the pollen from adhering again. Through this arrangement, some dead corners adhering to the de-powdering device and pollen that is inconvenient to clean can be effectively cleaned.
[0009] A further improvement of the technical solution of the utility model is that: the first cleaning component includes a rotating shaft, the rotating shaft is rotatably connected to the partition, the other end of the rotating shaft is used in conjunction with the box cover, the end of the rotating shaft away from the box cover is fixedly connected with bevel teeth, the bevel teeth are meshed with each other, a disc is fixedly connected to the rotating shaft, the disc is located above the partition, a driving rod is symmetrically arranged and fixedly connected to the disc, a rotating rod is symmetrically arranged and rotatably connected to the bottom of the box cover, a first clamp is fixedly connected to the rotating rod, a second clamp is slidably connected to the first clamp, and the first clamp is connected to the second clamp by bolts.
[0010] The above technical solution is adopted. In this solution, when the de-powdering device needs to be cleaned, the box cover is opened. At this time, the de-powdering device is fixed between the first clamping plate and the second clamping plate by tightening the bolts, and then the box cover is closed. At this time, the first motor is started. The first motor will transmit power to the rotating shaft through the mutual cooperation between the transmission shaft and the bevel gear. The rotation of the rotating shaft will drive the disc fixedly connected to it to rotate. The rotation of the disc will drive the de-powdering device to rotate. The de-powdering device will be vibrated when used in conjunction with the driving rod. The vibration can loosen the pollen adhering to the de-powdering device, and then the pollen will be thrown off by the self-rotation of the de-powdering device, thereby achieving the purpose of cleaning.
[0011] A further improvement of the technical solution of the utility model is that: the second cleaning component includes a reciprocating screw, which is rotatably connected to the box, one end of the reciprocating screw is fixedly connected to the output end of the second motor, a brush is threadedly connected to the reciprocating screw, the brush is slidably connected to the box, a shell is arranged inside the box, the shell is slidably connected to the box, a handle is fixedly connected to a side of the shell close to the second motor, a sliding rod is fixedly connected to the shell, a fixing plate is fixedly connected to the shell, springs are symmetrically arranged on both sides of the fixing plate, an end of the spring away from the fixing plate is fixedly connected to an extrusion plate, the extrusion plate is slidably connected to the sliding rod, and a limiting plate is symmetrically arranged and fixedly connected to the shell.
[0012] The above-mentioned technical scheme is adopted. In this scheme, when the second cleaning component is used to clean the de-powdering device, the handle is pulled to pull out the shell, and then the squeezing plate is squeezed to compress the spring, and then the de-powdering device is put in. At this time, the squeezing plate is released, and the spring rebounds to squeeze the de-powdering device and fix the de-powdering device through the cooperation with the limit plate, and then the shell is pushed so that the de-powdering device is completely inside the second chamber, and then the second motor is started. The operation of the second motor will drive the reciprocating screw to rotate, thereby driving the brush threadedly connected to it to move back and forth along the direction of the axis of the reciprocating screw, thereby achieving the purpose of cleaning the pollen adhered to the de-powdering device.
[0013] A further improvement of the technical solution of the utility model is that the collecting component includes a fan, the fan is fixedly connected to the box, a collector is arranged in the third chamber, a handle is fixedly connected to the side of the collector away from the first motor, the collector is slidably connected to the box, and a filter is fixedly connected to the side of the collector close to the fan.
[0014] The above technical solution is adopted. In this solution, when the first cleaning component and the second cleaning component are working, the fan starts and the pollen scattered inside the first chamber and the second chamber will enter the third chamber with the air. At this time, the gas will overflow through the filter, and the pollen will be blocked by the filter and fall into the collector, thereby achieving the purpose of collection.
[0015] A further improvement of the technical solution of the utility model is that: a positioning pin is fixedly connected to the box cover, a positioning hole is opened on the box body, and the positioning pin and the positioning hole are used in coordination.
[0016] By adopting the above technical solution, the box cover can be installed more conveniently by providing the positioning pins and the positioning holes for use in combination, and the stability of the connection between the box cover and the box body can also be enhanced.
[0017] A further improvement of the technical solution of the utility model is that a screen is fixedly connected to the air inlet.
[0018] The above technical solution is adopted, in which a screen is provided to prevent external dust from entering the box through the air inlet during operation, thereby preventing the dust from contaminating the cleaned de-powdering device.
[0019] A further improvement of the technical solution of the utility model is that a control panel is fixedly connected to one side of the box body close to the first motor, and the first motor, the second motor and the fan are electrically connected to the control panel respectively.
[0020] By adopting the above technical solution, the working states of the first motor, the second motor and the fan can be adjusted in time by providing a control panel, thereby improving the working efficiency of the device.
[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:
[0022] 1. The utility model provides a cleaning device for collecting bee pollen. When the de-pollenizer needs to be cleaned, the box cover is opened, the de-pollenizer is fixed by using the first cleaning component, and then the box cover is closed. At this time, the first motor is started, and the first motor transmits power to the first cleaning component through the transmission shaft, so that the pollen adhering to the dead corner of the de-pollenizer is loosened and falls off, and then the de-pollenizer is taken out from the inside of the first chamber and put into the inside of the second chamber, and the de-pollenizer is cleaned again by using the second cleaning component. At the same time, while the first cleaning component and the second cleaning component are working, the collecting component will collect the scattered pollen to prevent the pollen from adhering again. Through such an arrangement, some dead corners adhering to the de-pollenizer and pollen that is inconvenient to clean can be effectively cleaned.
[0023] 2. The utility model provides a cleaning device for collecting bee pollen. The box cover can be installed more conveniently by providing a positioning pin and a positioning hole for use in combination, and the stability of the connection between the box cover and the box body can also be enhanced.
[0024] 3. The utility model provides a cleaning device for collecting bee pollen. The screen can prevent external dust from entering the box through the air inlet during operation, thereby preventing the dust from contaminating the cleaned depollenizer. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The utility model is further described below in conjunction with the accompanying drawings.
[0026] Figure 1 This is a first structural schematic diagram of the utility model;
[0027] Figure 2 It is a second structural schematic diagram of the utility model;
[0028] Figure 3 It is a schematic diagram of the first cross-sectional structure of the utility model;
[0029] Figure 4 It is a schematic diagram of the second cross-sectional structure of the utility model;
[0030] Figure 5 It is a schematic diagram of the structure of A of the utility model;
[0031] In the figure: 1. support platform; 2. box body; 3. first chamber; 4. second chamber; 5. third chamber; 6. box cover; 7. first motor; 8. second motor; 9. transmission shaft; 10. bevel gear; 11. partition; 12. rotating shaft; 13. disc; 14. driving rod; 15. rotating rod; 16. first clamping plate; 17. second clamping plate; 18. reciprocating screw rod; 19. brush; 20. shell; 22. fixing plate; 23. spring; 24. extrusion plate; 25. limit plate; 26. fan; 27. collector; 28. filter; 31. control panel; 33. air inlet. DETAILED DESCRIPTION
[0032] The present invention is further described in detail below in conjunction with the embodiments:
[0033] Example
[0034] like Figure 1 , Figure 3 As shown, the utility model provides a cleaning device for collecting bee pollen, comprising a support platform 1, a box body 2 is fixedly connected above the support platform 1, the box body 2 comprises a first chamber 3, a second chamber 4 and a third chamber 5, the third chamber 5 is located below the second chamber 4, the first chamber 3 and the second chamber 4 are in a communicating state with the third chamber 5, a box cover 6 is arranged above the first chamber 3, a first motor 7 and a second motor 8 are respectively fixedly connected to the outside of the box body 2, a transmission shaft 9 is arranged inside the first chamber 3, the transmission shaft 9 is rotatably connected to the box body 2, one end of the transmission shaft 9 is fixedly connected to the output end of the first motor 7, a bevel gear 10 is fixedly connected to the transmission shaft 9, a partition 11 is fixedly connected in the first chamber 3, a plurality of air inlets 33 are arranged on the box body 2, an air inlet valve is fixedly connected inside the air inlet 33, a first cleaning component for cleaning pollen is connected in the first chamber 3, a second cleaning component for cleaning pollen is connected in the second chamber 4, and a collecting component for collecting pollen is connected in the third chamber 5.
[0035] In this embodiment, when the de-powdering device needs to be cleaned, the box cover 6 is opened, the de-powdering device is fixed by the first cleaning component, and then the box cover 6 is closed. At this time, the first motor 7 is started, and the first motor 7 will transmit power to the first cleaning component through the transmission shaft 9, so that the pollen adhering to the dead corners of the de-powdering device is loosened and falls off, and then the de-powdering device is taken out from the inside of the first chamber 3, and placed in the inside of the second chamber 4, and the de-powdering device is cleaned again by the second cleaning component. At the same time, while the first cleaning component and the second cleaning component are working, the collecting component will collect the scattered pollen to prevent the pollen from adhering again. Through this arrangement, some dead corners adhering to the de-powdering device and pollen that is inconvenient to clean can be effectively cleaned.
[0036] like Figure 4 , Figure 5As shown, in the present embodiment, preferably, the first cleaning component includes a rotating shaft 12, the rotating shaft 12 is rotatably connected to the partition 11, the other end of the rotating shaft 12 is used in conjunction with the box cover 6, the end of the rotating shaft 12 away from the box cover 6 is fixedly connected with a bevel gear 10, the bevel gears 10 are meshed with each other, a disc 13 is fixedly connected to the rotating shaft 12, the disc 13 is located above the partition 11, a driving rod 14 is symmetrically arranged and fixedly connected to the disc 13, a rotating rod 15 is symmetrically arranged and rotatably connected to the bottom of the box cover 6, a first clamping plate 16 is fixedly connected to the rotating rod 15, a second clamping plate 17 is slidably connected to the first clamping plate 16, and the first clamping plate 16 is connected to the second clamping plate 17 by bolts.
[0037] When the de-powdering device needs to be cleaned, the box cover 6 is opened. At this time, the de-powdering device is fixed between the first clamping plate 16 and the second clamping plate 17 by tightening the bolts, and then the box cover 6 is closed. At this time, the first motor 7 is started. The first motor 7 will transmit power to the rotating shaft 12 through the mutual cooperation between the transmission shaft 9 and the bevel gear 10. The rotation of the rotating shaft 12 will drive the disc 13 fixedly connected thereto to rotate. The rotation of the disc 13 will drive the de-powdering device to rotate. The de-powdering device will be vibrated when used in conjunction with the driving rod 14. The vibration can loosen the pollen adhering to the de-powdering device, and then the pollen will be thrown off by the self-rotation of the de-powdering device, thereby achieving the purpose of cleaning.
[0038] like Figure 2 , Figure 3 , Figure 4 As shown, preferably, the second cleaning component includes a reciprocating screw 18, which is rotatably connected to the box body 2, one end of the reciprocating screw 18 is fixedly connected to the output end of the second motor 8, a brush 19 is threadedly connected to the reciprocating screw 18, the brush 19 is slidably connected to the box body 2, a shell 20 is arranged inside the box body 2, the shell 20 is slidably connected to the box body 2, a handle is fixedly connected to the side of the shell 20 close to the second motor 8, a sliding rod is fixedly connected to the shell 20, a fixing plate 22 is fixedly connected to the shell 20, springs 23 are symmetrically arranged and fixedly connected on both sides of the fixing plate 22, an extrusion plate 24 is fixedly connected to the end of the spring 23 away from the fixing plate 22, the extrusion plate 24 is slidably connected to the sliding rod, and a limiting plate 25 is symmetrically fixedly connected to the shell 20.
[0039] When the second cleaning component is used to clean the de-powdering device, the handle is pulled to pull out the shell 20, and then the squeezing plate 24 is squeezed to compress the spring 23, and then the de-powdering device is put in. At this time, the squeezing plate 24 is released, and the spring 23 rebounds to squeeze the de-powdering device and fix the de-powdering device through the cooperation with the limiting plate 25, and then the shell 20 is pushed so that the de-powdering device is completely inside the second chamber 4, and then the second motor 8 is started. The second motor 8 will drive the reciprocating screw 18 to rotate, thereby driving the brush 19 threadedly connected to it to move back and forth along the axis of the reciprocating screw 18, thereby achieving the purpose of cleaning the pollen adhered to the de-powdering device.
[0040] like Figure 4 As shown, preferably, the collecting component includes a fan 26, which is fixedly connected to the box body 2, a collector 27 is provided in the third chamber 5, a handle is fixedly connected to the side of the collector 27 away from the first motor 7, the collector 27 is slidably connected to the box body 2, and a filter 28 is fixedly connected to the side of the collector 27 close to the fan 26.
[0041] When the first cleaning component and the second cleaning component are working, the fan 26 is started and the pollen scattered inside the first chamber 3 and the second chamber 4 will enter the third chamber 5 along with the air. At this time, the gas will overflow through the filter 28, and the pollen will be blocked by the filter 28 and fall into the collector 27, thereby achieving the purpose of collection.
[0042] like Figure 1 As shown, preferably, a positioning pin is fixedly connected to the box cover 6, and a positioning hole is opened on the box body 2, and the positioning pin and the positioning hole are used in coordination.
[0043] The box cover 6 can be installed more conveniently by providing the positioning pins and the positioning holes, and the stability of the connection between the box cover 6 and the box body 2 can also be enhanced.
[0044] like Figure 2 As shown, preferably, a screen is fixedly connected to the air inlet 33 .
[0045] The screen can be provided to prevent external dust from entering the box body 2 through the air inlet 33 during operation, thereby preventing the dust from contaminating the cleaned de-powdering device.
[0046] like Figure 1 As shown, preferably, a control panel 31 is fixedly connected to one side of the box body 2 close to the first motor 7 , and the first motor 7 , the second motor 8 and the fan 26 are electrically connected to the control panel 31 , respectively.
[0047] By providing the control panel 31, the working states of the first motor 7, the second motor 8 and the fan 26 can be adjusted in time, thereby improving the working efficiency of the device.
[0048] The working principle of the cleaning device for collecting bee pollen will be described in detail below.
[0049] like Figure 1-5 As shown, when the de-powdering device needs to be cleaned, the box cover 6 is opened, the de-powdering device is fixed by the first cleaning component, and then the box cover 6 is closed. At this time, the first motor 7 is started, and the first motor 7 will transmit power to the first cleaning component through the transmission shaft 9, so that the pollen adhering to the dead corners of the de-powdering device is loosened and falls off, and then the de-powdering device is taken out from the inside of the first chamber 3, and placed in the inside of the second chamber 4, and the de-powdering device is cleaned again by the second cleaning component. At the same time, while the first cleaning component and the second cleaning component are working, the collecting component will collect the scattered pollen to prevent the pollen from adhering again. Through this arrangement, some dead corners adhering to the de-powdering device and pollen that is inconvenient to clean can be effectively cleaned. When the de-powdering device needs to be cleaned, the box cover 6 is opened. At this time, the de-powdering device is fixed between the first clamping plate 16 and the second clamping plate 17 by tightening the bolts, and then the box cover 6 is closed. At this time, the first motor 7 is started. The first motor 7 will transmit power to the rotating shaft 12 through the mutual cooperation between the transmission shaft 9 and the bevel gear 10. The rotation of the rotating shaft 12 will drive the disc 13 fixedly connected thereto to rotate. The rotation of the disc 13 will drive the de-powdering device to rotate. The de-powdering device will be vibrated when used in conjunction with the driving rod 14. The vibration can loosen the pollen adhering to the de-powdering device, and then the pollen will be thrown off by the self-rotation of the de-powdering device, thereby achieving the purpose of cleaning. When the second cleaning component is used to clean the de-powdering device, the handle is pulled to pull out the shell 20, and then the squeezing plate 24 is squeezed to make the spring 23 in a compressed state, and then the de-powdering device is put in. At this time, the squeezing plate 24 is released, and the spring 23 rebounds to squeeze the de-powdering device and fix the de-powdering device through the cooperation with the limit plate 25, and then the shell 20 is pushed so that the de-powdering device is completely inside the second chamber 4, and then the second motor 8 is started. The second motor 8 will drive the reciprocating screw 18 to rotate, thereby driving the brush 19 connected to it by thread to move back and forth along the axis of the reciprocating screw 18, so as to achieve the purpose of cleaning the pollen adhered to the de-powdering device. When the first cleaning component and the second cleaning component are working, the fan 26 is started, and the pollen scattered inside the first chamber 3 and the second chamber 4 will enter the third chamber 5 with the air. At this time, the gas will overflow through the filter 28, and the pollen will be blocked by the filter 28 and fall into the collector 27, so as to achieve the purpose of collection. The box cover 6 can be installed more conveniently by providing the positioning pins and the positioning holes, and the stability of the connection between the box cover 6 and the box body 2 can also be enhanced. The screen can prevent external dust from entering the box body 2 through the air inlet 33 during operation, thereby preventing dust from contaminating the cleaned powder remover. The control panel 31 can timely adjust the working state of the first motor 7, the second motor 8 and the fan 26, thereby improving the working efficiency of the device.
[0050] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A cleaning device for collecting bee pollen, comprising a support platform (1), a box body (2) fixedly connected to the support platform (1), the box body (2) comprising a first chamber (3), a second chamber (4) and a third chamber (5), the third chamber (5) being located below the second chamber (4), the first chamber (3) and the second chamber (4) being in communication with the third chamber (5), and a box cover (6) being arranged above the first chamber (3); characterized in that: The first motor (7) and the second motor (8) are fixedly connected to the outside of the housing (2), respectively; a transmission shaft (9) is arranged inside the first chamber (3), the transmission shaft (9) is rotatably connected to the housing (2), one end of the transmission shaft (9) is fixedly connected to the output end of the first motor (7), a bevel gear (10) is fixedly connected to the transmission shaft (9), a partition (11) is fixedly connected to the first chamber (3), a plurality of air inlets (33) are arranged on the housing (2), an air inlet valve is fixedly connected to the air inlet (33), a first cleaning component for cleaning pollen is connected to the first chamber (3), a second cleaning component for cleaning pollen is connected to the second chamber (4), and a collecting component for collecting pollen is connected to the third chamber (5).
2. A bee pollen collection and cleaning device according to claim 1, characterized in that: The first cleaning component comprises a rotating shaft (12), the rotating shaft (12) is rotatably connected to the partition (11), the other end of the rotating shaft (12) is used in conjunction with the box cover (6), the end of the rotating shaft (12) away from the box cover (6) is fixedly connected with a bevel gear (10), the bevel gears (10) are meshed with each other, a disc (13) is fixedly connected to the rotating shaft (12), the disc (13) is located above the partition (11), a driving rod (14) is symmetrically arranged and fixedly connected to the disc (13), a rotating rod (15) is symmetrically arranged and rotatably connected to the bottom of the box cover (6), a first clamping plate (16) is fixedly connected to the rotating rod (15), a second clamping plate (17) is slidably connected to the first clamping plate (16), and the first clamping plate (16) and the second clamping plate (17) are connected by bolts.
3. A bee pollen collection and cleaning device according to claim 2, characterized in that: The second cleaning component comprises a reciprocating screw (18), the reciprocating screw (18) is rotatably connected to the housing (2), one end of the reciprocating screw (18) is fixedly connected to the output end of the second motor (8), a brush (19) is threadedly connected to the reciprocating screw (18), the brush (19) is slidably connected to the housing (2), a shell (20) is arranged inside the housing (2), the shell (20) is slidably connected to the housing (2), a handle is fixedly connected to a side of the shell (20) close to the second motor (8), a sliding rod is fixedly connected to the shell (20), a fixing plate (22) is fixedly connected to the shell (20), springs (23) are symmetrically arranged and fixedly connected on both sides of the fixing plate (22), an end of the spring (23) away from the fixing plate (22) is fixedly connected to an extrusion plate (24), the extrusion plate (24) is slidably connected to the sliding rod, and a limiting plate (25) is symmetrically arranged and fixedly connected to the shell (20).
4. A bee pollen collection and cleaning device according to claim 3, characterized in that: The collecting component comprises a fan (26), the fan (26) is fixedly connected to the box (2), a collector (27) is arranged in the third chamber (5), a handle is fixedly connected to the side of the collector (27) away from the first motor (7), the collector (27) is slidably connected to the box (2), and a filter (28) is fixedly connected to the side of the collector (27) close to the fan (26).
5. A bee pollen collection and cleaning device according to claim 4, characterized in that: A positioning pin is fixedly connected to the box cover (6), and a positioning hole is provided on the box body (2), and the positioning pin and the positioning hole are used in coordination.
6. A bee pollen collection and cleaning device according to claim 5, characterized in that: A screen is fixedly connected to the air inlet (33).
7. A bee pollen collection and cleaning device according to claim 6, characterized in that: A control panel (31) is fixedly connected to one side of the box body (2) close to the first motor (7), and the first motor (7), the second motor (8) and the fan (26) are electrically connected to the control panel (31) respectively.