Large air volume centrifugal energy-saving hot air curtain machine with adaptive variable diameter volute

Abstract

The application relates to the field of hot air curtain machines, and discloses a large-air-flow centrifugal energy-saving hot air curtain machine with a self-adaptive variable-diameter volute, which comprises a hot air machine shell, two groups of external connecting pipes are fixedly connected to the right side wall of the hot air machine shell, a human flow monitoring sensor is arranged on the outer side wall of the hot air machine shell, a variable-diameter volute air inlet mechanism is arranged at the top end of the hot air machine shell, and a heat energy recovery reciprocating mechanism is arranged on the inner wall of the bottom end of the hot air machine shell. The human flow monitoring sensor detects the entrance human flow density in real time, and transmits a signal to the variable-diameter volute air inlet mechanism; a motor b drives a pinion gear to engage a gear ring, drives a guide disc to rotate, makes an outer arc plate expand along a guide column (increases the volute inner diameter during a human flow peak period, and increases the air inlet amount) or close (reduces the inner diameter during a human flow valley period, and reduces the air volume), an inner arc plate is deformed synchronously with an ammonia-free elastic fiber deformation lining, the sealing performance of the volute inner wall is ensured, and air leakage is avoided.

Description

Technical Field

[0001] This invention relates to the field of air curtain technology, specifically to a high-volume centrifugal energy-saving air curtain with an adaptive variable-diameter volute. Background Technology

[0002] As a device used to block the exchange of indoor and outdoor air and maintain indoor temperature, the core components of a hot air curtain machine can be divided into five key parts: First, the fan system, which serves as the power core, provides power for airflow through different types of fans such as centrifugal fans, axial fans, or cross-flow fans, meeting the needs of different locations for air pressure, air volume, and noise control; second, the heating system, which is divided into hot water type (copper tube through aluminum foil heat exchanger), steam type (steel tube around aluminum strip heat exchanger), and electric heating type (electric heating element or PTC) based on the heat medium. The system consists of a ceramic heater, responsible for heating the air to the required temperature; a control system, which uses temperature sensors to monitor the ambient temperature in real time and automatically adjusts the heating and fan operation in conjunction with the controller. Some models also feature a timer to enhance ease of use and energy efficiency; the casing, typically made of cold-rolled steel or stainless steel with a rust-proof and aesthetically pleasing finish, protects internal components and guides airflow through the inlet and outlet; auxiliary components include an upper and lower air duct and a platform support to optimize airflow, ensure a uniform and stable air curtain, and facilitate installation and fixation. All parts work together to ensure the efficient operation of the air curtain machine. As a key air barrier device for large spaces (such as shopping mall entrances, station passages, and industrial plants), the core function of the air curtain machine is to create an "invisible air curtain" through high-speed airflow, isolating indoor and outdoor temperature differences and blocking dust intrusion, while also considering energy consumption control and adaptability to different scenarios.

[0003] A search revealed Chinese Patent Publication No. CN 218565696 U, which discloses a heat curtain machine. The machine includes a housing, a heat air device housed within the housing, a drive mechanism for driving the heat air device on the housing, and an air outlet at the bottom of the housing for communication with the output end of the heat air device. The air outlet directs the airflow vertically downwards to form a heat curtain blowing out from top to bottom. This heat curtain machine blows the heat curtain out from top to bottom, improving insulation performance, reducing heat loss within the equipment, and achieving the effects of reduced power consumption and energy saving.

[0004] However, based on the aforementioned public cases and traditional air curtain machines, it can be seen that the inner diameter of the volute of a traditional air curtain machine is fixed, and it can only operate with a single air volume. It cannot adjust the air intake and exhaust intensity according to changes in pedestrian flow at the entrance and exit. During peak pedestrian flow (such as during shopping mall commuting hours), the fixed air volume may lead to increased heat exchange due to insufficient airflow, resulting in a decrease in temperature control effect. During off-peak pedestrian flow (such as in the early morning), it still operates with a large air volume, resulting in a double waste of electrical and thermal energy. Therefore, a large-volume centrifugal energy-saving air curtain machine with an adaptive variable diameter volute is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background art, and thus propose a high-volume centrifugal energy-saving hot air curtain machine with an adaptive variable-diameter volute. This invention uses a pedestrian flow monitoring sensor to detect the pedestrian flow density at the entrance and exit in real time, transmitting the signal to the variable-diameter volute air intake mechanism. Motor b drives a pinion gear to mesh with a gear ring, causing the guide disc to rotate. This causes the outer arc plate to expand synchronously along the guide column (increasing the inner diameter of the volute during peak pedestrian flow to increase air intake) or close (reducing the inner diameter during off-peak pedestrian flow to decrease air volume). The inner arc plate deforms synchronously with the ammonia-free elastic fiber deformable lining, ensuring the airtightness of the volute's inner wall and preventing air leakage. This not only ensures air isolation and improves insulation performance during peak pedestrian flow but also saves energy and avoids waste during off-peak pedestrian flow.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A high-volume centrifugal energy-saving hot air curtain machine with an adaptive variable diameter volute includes a hot air blower housing. Two sets of external pipes are fixedly connected to the right side wall of the hot air blower housing. A human flow monitoring sensor is installed on the outer side wall of the hot air blower housing. A variable diameter volute air inlet mechanism is installed at the top of the hot air blower housing. A heat energy recovery reciprocating mechanism is installed on the inner wall at the bottom of the hot air blower housing.

[0008] The variable diameter volute air inlet mechanism is used to draw in external air into the interior of the hot air blower housing, and after passing through the internal heating components, the generated hot air is blown out from the bottom of the hot air blower housing.

[0009] The heat recovery reciprocating mechanism is used to recycle the hot air generated by the variable diameter volute air inlet mechanism to heat the variable diameter volute air inlet mechanism, thereby reducing energy consumption.

[0010] Preferably, the variable diameter volute air inlet mechanism includes a fan housing, a guide disc is rotatably connected to the front surface of the fan housing, a connecting plate is fixedly connected to the top of the guide disc, a rear positioning plate is fixedly connected to the rear end of the fan housing, a support plate is fixedly connected to the surface of the rear positioning plate, a motor a is fixedly connected to the center of the support plate, the output shaft of the motor a passes through and is rotatably connected to the center of the support plate and the rear positioning plate, and a turbine blade a is fixedly connected to the output shaft of the motor a.

[0011] Preferably, a gear ring is fixedly connected to the end of the connecting plate away from the guide plate, a motor b is fixedly connected to the rear end of the support plate, a pinion is fixedly connected to the output shaft of the motor b, an inclined groove is formed on the inner side wall of the guide plate, a straight groove is formed on the inner side wall of the rear positioning plate, and an outer arc plate is slidably connected between the inner walls of the inclined groove and the straight groove of the guide plate and the rear positioning plate.

[0012] Preferably, the inner arc surface of the fan housing is fixedly connected to multiple sets of guide columns, the surface of the outer arc plate is provided with guide grooves, the outer arc plate is slidably connected to the surface of the guide columns, the inner sidewall of the outer arc plate is provided with two sets of grooves, the left groove of the outer arc plate is hinged to an inner arc plate b, the inner wall of the right groove of the outer arc plate is hinged to an inner arc plate a, and the inner sidewalls of the inner arc plate a and the inner arc plate b are fixedly connected with deformable inner linings.

[0013] Preferably, the turbine blade a is rotatably connected to the inner side wall of the fan housing, the fan housing is fixedly connected to the upper surface of the hot air blower housing, and the pinion meshes with the gear ring.

[0014] Preferably, the inner arc plate b is slidably connected to the inner side wall of the fan housing, and the inner arc plate a is slidably connected to the inner side wall of the fan housing. Multiple sets of the inner arc plate b and the inner arc plate a are provided. A groove is provided on the inner side of the inner arc plate a, and the inner arc plate b is slidably connected to the inner wall of the groove of the inner arc plate a.

[0015] Preferably, the heat recovery reciprocating mechanism includes a guide shroud, which is fixedly connected to the outer side wall of the hot air blower housing. A turbine fan blade b is rotatably connected through the inner side wall of the guide shroud. A guide pipe is fixedly connected to the top of the guide shroud. The end of the guide pipe away from the guide shroud is fixedly connected to the side wall at the bottom of the blower housing. Three sets of blades are rotatably connected to the inner wall at the bottom of the hot air blower housing.

[0016] Preferably, the rotation center shafts of the three sets of blades are all fixedly connected to transmission gears, the top of the transmission gears are engaged with a bidirectional rack, the bidirectional rack is elastically connected to the inner side wall of the bottom of the hot air blower housing by a return spring, the inner side wall of the bidirectional rack passes through and is slidably connected to the guide rod, and the top of the bidirectional rack is engaged with a half gear.

[0017] Preferably, one end of the return spring is fixedly connected to the inner side wall of the bottom end of the hot air blower housing, and the other end of the return spring is fixedly connected to the outer side wall of the bidirectional rack, which is slidably connected to the inner side wall of the bottom end of the hot air blower housing.

[0018] Preferably, the guide rod is fixedly connected to the bottom end of the inner side wall of the hot air blower housing, the rotation center axis of the half gear is fixedly connected to the rotation center axis of the turbine fan blade b, the half gear is rotatably connected to the inner side wall of the hot air blower housing, and the transmission gear is rotatably connected to the inner side wall at the bottom end of the hot air blower housing.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention uses a pedestrian flow monitoring sensor to detect the pedestrian flow density at the entrance and exit in real time, and transmits the signal to the variable diameter volute air intake mechanism; motor b drives the pinion to mesh with the gear ring, which drives the guide plate to rotate, so that the outer arc plate expands synchronously along the guide column (increasing the inner diameter of the volute and increasing the air intake volume during peak pedestrian flow) or closes (reducing the inner diameter and reducing the air volume during off-peak pedestrian flow). The inner arc plate deforms synchronously with the ammonia-free elastic fiber deformable lining to ensure the sealing of the inner wall of the volute and avoid air leakage. It can ensure the air isolation effect and improve the heat preservation performance during peak pedestrian flow, and save energy and avoid waste during off-peak pedestrian flow.

[0021] 2. The heat recovery reciprocating mechanism of the present invention collects the output hot air from the guide shroud and delivers it to the outer shell of the fan through the guide pipe to preheat the volute and internal components, thereby avoiding the extra energy consumption caused by the low component temperature during cold start, shortening the cold start time and reducing energy consumption.

[0022] 3. The turbine blade b of the present invention is set inside the guide shroud. Hot air drives the turbine blade b to rotate, providing power for blade adjustment. No additional motor is required, further reducing energy consumption.

[0023] 4. In this invention, the turbine blade b drives the half gear to periodically mesh with the bidirectional rack. The rack slides along the guide rod and meshes with the transmission gear, causing the blade to rotate in both directions (when the half gear is engaged in the toothed area, the blade opens; when it is in the toothless area, the return spring pulls the rack to return to its original position, and the blade rotates in the opposite direction), forming hot air turbulence and avoiding "temperature control blind spots".

[0024] 5. The present invention provides a deformation liner on the inner side of the inner arc plate a. The deformation liner can expand and contract synchronously with the inner arc plate a and the outer arc plate, ensuring the sealing of the inner wall of the volute and thus reducing energy consumption. Attached Figure Description

[0025] Figure 1 This is an overall perspective view of the present invention;

[0026] Figure 2 This is a schematic side view of the entire invention;

[0027] Figure 3 This is a schematic diagram of the fan housing and guide disc in the separated state of the present invention;

[0028] Figure 4 This is a schematic diagram of the inner side of the guide plate of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the guide plate and rear positioning plate separated from the fan housing of the present invention;

[0030] Figure 6 This is a partial cross-sectional view of the support plate of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the liner and the fan housing in the separated state of the present invention;

[0032] Figure 8 This is a partial cross-sectional view of the outer arc plate of the present invention;

[0033] Figure 9 This is a partial cross-sectional view of the air deflector structure of the present invention;

[0034] Figure 10 This is a partial cross-sectional view of the hot air blower housing of the present invention.

[0035] in:

[0036] 1. Hot air blower housing; 2. External piping; 3. People flow monitoring sensor;

[0037] 4. Variable diameter volute air inlet mechanism; 401. Fan housing; 402. Guide plate; 403. Connecting plate; 404. Turbine blade a; 405. Rear positioning plate; 406. Support plate; 407. Motor a; 408. Motor b; 409. Gear ring; 410. Pinion; 411. Guide column; 412. Outer arc plate; 413. Inner arc plate a; 414. Inner arc plate b; 415. Deformation liner;

[0038] 5. Heat recovery reciprocating mechanism; 501. Draft shield; 502. Turbine fan blade b; 503. Draft pipe; 504. Half gear; 505. Guide rod; 506. Return spring; 507. Double rack; 508. Transmission gear; 509. Blade. Detailed Implementation

[0039] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0040] Example:

[0041] like Figures 1-10 As shown, this embodiment of the invention provides a large-volume centrifugal energy-saving hot air curtain machine with an adaptive variable diameter volute, including a hot air blower housing 1. Two sets of external pipes 2 are fixedly connected to the right side wall of the hot air blower housing 1. A human flow monitoring sensor 3 is provided on the outer side wall of the hot air blower housing 1. The human flow monitoring sensor 3 is the prior art. The human flow monitoring sensor 3 can detect the amount of human flow passing below and transmit an electrical signal to the variable diameter volute air inlet mechanism 4 so that the variable diameter volute air inlet mechanism 4 can be adjusted. The top of the hot air blower housing 1 is provided with a variable diameter volute air inlet mechanism 4, and the inner wall of the bottom of the hot air blower housing 1 is provided with a heat energy recovery reciprocating mechanism 5.

[0042] The variable diameter volute air inlet mechanism 4 is used to draw external air into the interior of the hot air blower housing 1, and after passing through the internal heating components, the generated hot air is blown out from the bottom of the hot air blower housing 1.

[0043] The heat recovery reciprocating mechanism 5 is used to recycle the hot air generated by the variable diameter volute air inlet mechanism 4 to heat the variable diameter volute air inlet mechanism 4, thereby reducing energy consumption.

[0044] like Figures 2-8 As shown, the variable diameter volute air inlet mechanism 4 includes a fan housing 401. A guide plate 402 is rotatably connected to the front surface of the fan housing 401. A slot is provided at the center of the guide plate 402, allowing external air to be drawn into the fan housing 401 through the slot. A connecting plate 403 is fixedly connected to the top of the guide plate 402. A gear ring 409 is fixedly connected to the end of the connecting plate 403 away from the guide plate 402. When the gear ring 409 rotates, it drives the connecting plate 403 and the guide plate 402 to rotate synchronously. A motor b408 is fixedly connected to the rear end of the support plate 406. A pinion 410 is fixedly connected to the output shaft of the motor b408. The guide plate 402... The inner sidewall of the fan housing 401 is provided with a slanted groove, and the inner sidewall of the rear positioning plate 405 is provided with a straight groove. An outer arc plate 412 is slidably connected between the guide plate 402 and the inner wall of the slanted groove and the straight groove of the rear positioning plate 405. When the guide plate 402 rotates, it will drive the outer arc plate 412 to move in its slanted groove. At the same time, since the outer arc plate 412 also moves in the straight groove of the rear positioning plate 405, multiple sets of outer arc plates 412 can be adjusted to expand outward or move inward simultaneously. The rear end of the fan housing 401 is fixedly connected to the rear positioning plate 405. A support plate 406 is fixedly connected to the surface of the rear positioning plate 405. A protrusion is provided on the inner side of the support plate 406, and the protrusion is connected and fixed to the rear positioning plate 405.

[0045] like Figure 3 , Figures 5-8A motor a407 is fixedly connected to the center of the support plate 406. The output shaft of the motor a407 passes through and is rotatably connected to the center of the support plate 406 and the rear positioning plate 405. A turbine blade a404 is fixedly connected to the output shaft of the motor a407. The turbine blade a404 is rotatably connected to the inner side wall of the fan housing 401. When the support plate 406 drives the turbine blade a404 to rotate, it draws external air into the fan housing 401 through the slot of the guide plate 402 and blows it into the fan housing 401 through the lower exhaust port. Body 401 is fixedly connected to the upper surface of hot air blower housing 1. Pinion 410 meshes with gear ring 409. When pinion 410 rotates, it meshes with gear ring 409, causing gear ring 409 to drive connecting plate 403 and guide plate 402 to rotate synchronously. Multiple sets of guide posts 411 are fixedly connected to the inner arc surface of blower housing body 401. Guide grooves are opened on the surface of outer arc plate 412. Outer arc plate 412 is slidably connected to the surface of guide post 411. The guide post 411 can guide outer arc plate 412, so that it can only move on the surface of guide post 411.

[0046] like Figure 7 and Figure 8 As shown, the inner sidewall of the outer arc plate 412 has two sets of grooves. The inner arc plate b414 is hinged to the left groove of the outer arc plate 412, and the inner arc plate a413 is hinged to the inner wall of the right groove of the outer arc plate 412. A deformable liner 415 is fixedly connected to the inner sidewall of the inner arc plate a413 and the inner arc plate b414. The deformable liner 415 is made of ammonia-free elastic fiber, which causes the deformable liner 415 to deform itself when the inner arc plate a413 and the inner arc plate b414 move outward. In addition, the material has an airtight effect, so that the deformable liner 415 can always fit against the inner side of the fan housing 401 and stably guide the air. The inner arc plate b414 is slidably connected to the inner side wall of the fan housing 401, and the inner arc plate a413 is slidably connected to the inner side wall of the fan housing 401. Multiple sets of inner arc plates b414 and a413 are provided. The inner side of the inner arc plate a413 is provided with a groove, and the inner arc plate b414 is slidably connected to the inner wall of the groove of the inner arc plate a413. When the outer arc plate 412 moves outward or inward, it will drive the inner arc plate a413 and the inner arc plate b414 to move synchronously, causing the deformation lining 415 to deform and change the inner diameter of the fan housing 401, so as to adjust according to the working conditions monitored by the actual flow monitoring sensor 3.

[0047] like Figures 9-10As shown, the heat recovery reciprocating mechanism 5 includes a guide shroud 501, which is fixedly connected to the outer sidewall of the hot air blower housing 1. The bottom end of the guide shroud 501 has an inclined air inlet, allowing some hot air to enter the inclined air inlet of the guide shroud 501 during operation. The hot air then follows the guide shroud 501 into the guide pipe 503, preheating the blower housing 401 and preventing cold starts where the housing temperature is too low, thus increasing power consumption. A turbine fan is rotatably connected through the inner sidewall of the guide shroud 501. When hot air enters the interior of the guide shroud 501, it blows the turbine blades b502 along the interior of the guide shroud 501 to rotate. A guide pipe 503 is fixedly connected to the top of the guide shroud 501. The end of the guide pipe 503 away from the guide shroud 501 is fixedly connected to the side wall at the bottom of the fan housing 401. Through the guide pipe 503, a portion of the blown hot air can circulate back into the fan housing 401 to heat the entire fan housing 401, avoiding excessively low cold start temperature and increased energy consumption, and significantly improving the hot air blowing efficiency.

[0048] Three sets of blades 509 are rotatably connected to the inner wall at the bottom of the hot air blower housing 1. By rotating and opening the three sets of blades 509, hot air drawn in from the variable-diameter volute air inlet mechanism 4 at the top of the hot air blower housing 1, converted by the internal heating components, is blown outwards from the blades 509. A transmission gear 508 is fixedly connected to the rotation center shaft of each of the three sets of blades 509. A double-sided rack 507 meshes with the top of the transmission gear 508. Both ends of the double-sided rack 507 are provided with tooth blocks that mesh with the tooth spacing of the transmission gear 508 and the half-gear 504. 7. A return spring 506 is elastically connected to the inner sidewall of the bottom end of the hot air blower housing 1. One end of the return spring 506 is fixedly connected to the inner sidewall of the bottom end of the hot air blower housing 1, and the other end is fixedly connected to the outer sidewall of the double-sided rack 507. The function of the return spring 506 is to automatically reset the position of the double-sided rack 507 after it has been moved by the rotation and meshing of the half gear 504. The double-sided rack 507 is slidably connected to the inner sidewall of the bottom end of the hot air blower housing 1, and the inner sidewall of the double-sided rack 507 passes through and is slidably connected to the guide rod 505. The guide rod 505 is fixedly connected to the bottom end of the inner side wall of the hot air blower housing 1. The guide rod 505 guides the movement of the bidirectional rack 507 and also applies elasticity to the compression of the return spring 506, preventing torsion. The rotation center axis of the half gear 504 is fixedly connected to the rotation center axis of the turbine blade b502. The half gear 504 is rotatably connected to the inner side wall of the hot air blower housing 1. The transmission gear 508 is rotatably connected to the inner side wall at the bottom end of the hot air blower housing 1. The top end of the bidirectional rack 507 meshes with the half gear 504. The turbine blade b502 is subjected to... When the circulating hot air blows, it will rotate, driving the half gear 504 to rotate circumferentially. When the half gear 504 rotates, it will periodically mesh with the bidirectional rack 507, and the bidirectional rack 507 will move to synchronously mesh with multiple sets of transmission gears 508 to drive the blades 509 to open, blowing the hot air out in a turbulent and uniform manner. At the same time, when the toothless block of the half gear 504 meshes with the bidirectional rack 507, the bidirectional rack 507 will be reset by the elastic action of the return spring 506. The meshing transmission gears 508 drive the blades 509 to rotate in the opposite direction, performing periodic rotation and blowing.

[0049] Working principle:

[0050] Firstly, adaptive air intake adjustment is achieved through the variable diameter volute air intake mechanism 4: The variable diameter volute air intake mechanism 4 at the top of the hot air blower housing 1 is based on the blower housing 401. The pedestrian flow monitoring sensor 3 (existing technology) on its outer side detects the amount of pedestrian flow passing below and transmits the electrical signal to the inside of the mechanism. If the air intake volume needs to be adjusted, the motor b408 at the rear end of the support plate 406 (fixed on the surface of the rear positioning plate 405) is activated. The output shaft of the motor b408 drives the pinion 410 to rotate. The pinion 410 meshes with the gear ring 409, causing the gear ring 409 to drive the guide plate 402 (rotatably connected to the front end of the blower housing 401) to rotate through the connecting plate 403. The inclined groove on the inner side of the guide plate 402 drives the outer arc plate 412 (slidably connected to the surface of the guide post 411, and the guide post 411 is fixed to the inner arc surface of the blower housing 401). The outer arc plate 412 moves while the outer arc plate 412 slides along the straight groove of the rear positioning plate 405, so that multiple sets of outer arc plates 412 can expand or close synchronously. When the outer arc plate 412 moves, the inner arc plates a413 and b414 (both slidably connected to the inside of the fan housing 401) hinged on both sides move synchronously, causing the deformation lining 415 (fixed to the inside of the inner arc plate and not airtight) made of ammonia-free elastic fiber material to deform, changing the inner diameter of the fan housing 401 to adapt to the air intake needs corresponding to different crowds. Then the motor a407 (fixed to the center of the support plate 406) is started, and its output shaft drives the turbine fan blade a404 (rotatably connected to the inside of the fan housing 401) to rotate, drawing in external air through the guide plate 402 slot, and heating it through the heating component inside the hot air fan housing 1 to form hot air, thus completing the adaptive air intake and hot air generation.

[0051] The heat recovery reciprocating mechanism 5 at the bottom of the hot air blower housing 1 achieves uniform diffusion of hot air. When the hot air is blown outward, a small portion of the hot air flows into the interior of the guide shroud 501, causing the turbine blades b502 to rotate circumferentially due to the airflow. The rising hot air passes through the interior of the guide pipe 503, heating the blower housing 401. This ensures that the blower housing 401 is heated when the variable diameter volute air intake mechanism 4 is in the external air intake, reducing energy consumption. During the rotation of the turbine blades b502, its rotation center shaft drives the half gear 504 to rotate. The half gear 504 periodically meshes with the double-sided rack 507; the double-sided rack 507... Guided by the guide rod 505, the blade slides horizontally and stretches or compresses the return spring 506. At the same time, the bidirectional rack 507 meshes with the transmission gear 508, causing the blade 509 to rotate and open, drawing in hot air from the variable diameter volute air inlet mechanism 4 and blowing the hot air converted by the heating component outward. When the toothless block area of ​​the half gear 504 disengages from the bidirectional rack 507, the return spring 506 drives the bidirectional rack 507 to return to its original position. The bidirectional rack 507 meshes with the transmission gear 508 in the opposite direction, causing the blade 509 to rotate in the opposite direction. Through the continuous rotation of the half gear 504, the blade 509 achieves periodic forward and reverse rotation, allowing the blown hot air to form turbulence and evenly cover the target area.

[0052] In the description of this invention, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only to describe the invention and not to require the invention to be constructed or operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" in this invention should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms based on the specific circumstances.

[0053] The above description represents the preferred mode of operation of the present invention. The specific operational modes are provided solely for a better understanding of the invention's concept. Those skilled in the art can make various improvements or equivalent substitutions based on the principles of this invention, and these improvements or equivalent substitutions are also considered to fall within the scope of protection of this invention.

Claims

1. A high-volume centrifugal energy-saving hot air curtain machine with an adaptive variable diameter volute, comprising a hot air blower housing (1), characterized in that, Two sets of external pipes (2) are connected to the right side wall of the hot air blower housing (1). A human flow monitoring sensor (3) is installed on the outer side wall of the hot air blower housing (1). A variable diameter volute air inlet mechanism (4) is installed at the top of the hot air blower housing (1). A heat energy recovery reciprocating mechanism (5) is installed on the inner wall at the bottom of the hot air blower housing (1). The variable diameter volute air inlet mechanism (4) is used to draw external air into the interior of the hot air blower housing (1), and after passing through the internal heating components, the generated hot air is blown out from the bottom of the hot air blower housing (1); The heat recovery reciprocating mechanism (5) is used to recycle the hot air generated by the variable diameter volute air inlet mechanism (4) to heat the variable diameter volute air inlet mechanism (4) and reduce energy consumption; The variable diameter volute air intake mechanism (4) includes a fan housing (401), a guide plate (402) is rotatably connected to the front surface of the fan housing (401), a connecting plate (403) is fixedly connected to the top of the guide plate (402), a rear positioning plate (405) is fixedly connected to the rear end of the fan housing (401), a support plate (406) is fixedly connected to the surface of the rear positioning plate (405), a motor a (407) is fixedly connected to the center of the support plate (406), the output shaft of the motor a (407) passes through and is rotatably connected to the center of the support plate (406) and the rear positioning plate (405), and a turbine blade a (404) is fixedly connected to the output shaft of the motor a (407); a gear ring (409) is fixedly connected to the end of the connecting plate (403) away from the guide plate (402), and a motor b (408) is fixedly connected to the rear end of the support plate (406). The output shaft of motor b (408) is fixedly connected to a pinion (410). The inner sidewall of the guide disc (402) has an inclined groove, and the inner sidewall of the rear positioning plate (405) has a straight groove. An outer arc plate (412) is slidably connected between the inner walls of the inclined and straight grooves of the guide disc (402) and the rear positioning plate (405). Multiple sets of guide columns (411) are fixedly connected to the inner arc surface of the fan housing (401), and the outer arc plate (412)... The surface is provided with guide grooves. The outer arc plate (412) is slidably connected to the surface of the guide post (411). The inner sidewall of the outer arc plate (412) is provided with two sets of grooves. The inner arc plate b (414) is hinged to the left groove of the outer arc plate (412). The inner arc plate a (413) is hinged to the inner wall of the right groove of the outer arc plate (412). The inner arc plate a (413) and the inner sidewall of the inner arc plate b (414) are fixedly connected with a deformable inner liner (415).

2. The high-volume centrifugal energy-saving hot air curtain machine with adaptive variable diameter volute as described in claim 1, characterized in that, The turbine blade a (404) is rotatably connected to the inner side wall of the fan housing (401), the fan housing (401) is fixedly connected to the upper surface of the hot air blower housing (1), and the pinion (410) meshes with the gear ring (409).

3. The high-volume centrifugal energy-saving hot air curtain machine with adaptive variable diameter volute as described in claim 1, characterized in that, The inner arc plate b (414) is slidably connected to the inner side wall of the fan housing (401), and the inner arc plate a (413) is slidably connected to the inner side wall of the fan housing (401). Multiple sets of the inner arc plate b (414) and the inner arc plate a (413) are provided. The inner side of the inner arc plate a (413) is provided with a groove, and the inner arc plate b (414) is slidably connected to the inner wall of the groove of the inner arc plate a (413).

4. The high-volume centrifugal energy-saving hot air curtain machine with adaptive variable diameter volute as described in claim 1, characterized in that, The heat recovery reciprocating mechanism (5) includes a guide shroud (501), which is fixedly connected to the outer side wall of the hot air blower housing (1). The inner side wall of the guide shroud (501) is rotatably connected to a turbine fan blade (502). The top of the guide shroud (501) is fixedly connected to a guide pipe (503). The end of the guide pipe (503) away from the guide shroud (501) is fixedly connected to the side wall at the bottom of the blower housing (401). The inner wall at the bottom of the hot air blower housing (1) is rotatably connected to three sets of blades (509).

5. The high-volume centrifugal energy-saving hot air curtain machine with adaptive variable diameter volute as described in claim 4, characterized in that, The rotation center shafts of the three sets of blades (509) are all fixedly connected to transmission gears (508). The top of the transmission gears (508) is engaged with a double rack (507). The double rack (507) is elastically connected to the inner side wall of the bottom of the hot air blower housing (1) by a return spring (506). The inner side wall of the double rack (507) is slidably connected to the guide rod (505). The top of the double rack (507) is engaged with a half gear (504).

6. The high-volume centrifugal energy-saving hot air curtain machine with adaptive variable diameter volute as described in claim 5, characterized in that, One end of the return spring (506) is fixedly connected to the inner side wall of the bottom end of the hot air blower housing (1), and the other end of the return spring (506) is fixedly connected to the outer side wall of the bidirectional rack (507). The bidirectional rack (507) is slidably connected to the inner side wall of the bottom end of the hot air blower housing (1).

7. The high-volume centrifugal energy-saving hot air curtain machine with adaptive variable diameter volute as described in claim 5, characterized in that, The guide rod (505) is fixedly connected to the bottom end of the inner side wall of the hot air blower housing (1). The rotation center axis of the half gear (504) is fixedly connected to the rotation center axis of the turbine fan blade b (502). The half gear (504) is rotatably connected to the inner side wall of the hot air blower housing (1). The transmission gear (508) is rotatably connected to the inner side wall at the bottom end of the hot air blower housing (1).

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