A centrifugal fan for air conditioning system

Abstract

The present invention discloses a centrifugal fan for an air-conditioning system, comprising a casing, blades, a first motor, a wind pressure mechanism, a front plate and a connecting rod; the first motor connected to the wind pressure mechanism is fixedly mounted at the rear end of the casing; the wind pressure mechanism is composed of a second motor, a gear ring and a limit ring, the second motor is fixedly embedded in the wind pressure mechanism, and the output shaft of the second motor is gear-engaged and connected to the gear ring; a centrifugal fan control system controls the two motors, and the system comprises a distance data analysis unit, a temperature data analysis unit, a direction data analysis unit, an energy-saving control unit, etc.; the two motors are controlled by the centrifugal fan control system, so as to adjust the rotation speed of the first motor and the opening degree of the blades, so as to provide cold air with different air volumes and air pressures, thereby solving the problem that the air supply volume or air pressure of the air-conditioning system is insufficient, and sufficient cold air cannot be provided to reach distant areas, resulting in an unclear drop in air temperature in distant areas.

Description

Technical Field

[0001] The invention relates to the field of centrifugal fans, and in particular to a centrifugal fan used in an air conditioning system. Background Art

[0002] An air conditioning system is a system used to regulate indoor temperature, humidity and air quality. It is widely used in residential, commercial buildings, industrial facilities and other places to provide a comfortable indoor environment. The centrifugal fan in the air conditioning system is a device used to transport air. It generates centrifugal force through the rotating impeller, sucks in air and transports it to indoor or outdoor through the air duct. Centrifugal fans are usually characterized by high efficiency, low noise and stability, and can effectively realize the circulation and flow of air in the air conditioning system.

[0003] However, when the current air-conditioning system is in use, when the air-conditioning air supply distance is long, the air supply volume or air pressure of the air-conditioning system is insufficient, and sufficient cold air cannot be provided to reach the distant area, resulting in an unclear drop in the air temperature in the distant area, or the direction of the air-conditioning air supply port may be inappropriate, resulting in uneven air flow and some areas not being adequately cooled. Therefore, there is an urgent need for a centrifugal fan for an air-conditioning system that can solve the above problems. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention provides a centrifugal fan for an air conditioning system. The technical solution adopted by the present invention is as follows:

[0005] A centrifugal fan for an air-conditioning system, comprising a casing, blades, a first motor, a wind pressure mechanism, a front plate and a connecting rod; an air inlet is arranged at the front end of the casing, a horizontal air outlet is arranged at the side, a first motor is fixedly mounted on the casing away from the air inlet end, an output shaft of the first motor is fixedly connected to the wind pressure mechanism, the wind pressure mechanism is fixedly connected to the front plate through the connecting rod, and the front plate is rotatably mounted on the inner surface of the casing at the air inlet; the wind pressure mechanism is composed of a second motor, a gear ring and a limit ring, the second motor is fixedly embedded in the wind pressure mechanism, and the output shaft of the second motor is gear-engaged with the gear ring; the first motor and the second motor are both electrically connected to a centrifugal fan control system, and the centrifugal fan control system comprises a data collection unit, a data cleaning unit, a distance data analysis unit, a temperature data analysis unit, a direction data analysis unit, an energy-saving control unit, a frequency converter control unit and a blade angle control unit.

[0006] Furthermore, the wind pressure mechanism includes a transmission ring and a limiting ring, and twelve protrusions are equidistantly arranged on the outer surfaces of the transmission ring and the gear ring. The limiting ring is rotatably connected to the transmission ring and the gear ring respectively, and the limiting ring is provided with a sliding groove corresponding to the position of the protrusion, and the size of the sliding groove is larger than the size of the protrusion.

[0007] Furthermore, four connecting rods are fixedly connected to the end of the gear ring close to the transmission ring, and the other ends of the connecting rods are fixedly connected to the transmission ring.

[0008] Furthermore, a limiting hole connected to the slide groove is provided on the limiting ring, the blade passes through the limiting hole, and the upper end of the protrusion is hinged to the bottom of the blade; the wind pressure mechanism and the front plate are provided with limiting grooves corresponding to the blade position.

[0009] Further, the output end of the data collection unit is unidirectionally connected to the output end of the data cleaning unit, the output end of the data cleaning unit is unidirectionally connected to the input ends of the distance data analysis unit, the temperature data analysis unit and the direction data analysis unit, the output ends of the distance data analysis unit, the temperature data analysis unit and the direction data analysis unit are unidirectionally connected to the input end of the energy-saving control unit, and the energy-saving control unit is unidirectionally connected to the input ends of the inverter control unit and the blade angle control unit;

[0010] The data collection unit is used to collect data information obtained by the distance and temperature measuring sensor arranged at the air outlet of the air conditioner;

[0011] The data cleaning unit is used to clean the collected data information, including denoising, outlier processing, format conversion and elimination of irrelevant features;

[0012] The distance data analysis unit is used to obtain the distance between the area where the temperature is greatly different from the set temperature value and the air conditioner. The specific principle is that the sensor emits an infrared beam and receives the reflected light signal, and determines the distance of the object by measuring the reflection time and intensity of the light;

[0013] The temperature data analysis unit is used to measure the temperature of the environment. The specific principle is to measure the intensity of the received infrared radiation to determine the temperature of the environment and the object;

[0014] The direction data analysis unit is used to perform temperature gradient processing on the collected temperature information. The specific principle is that high-temperature air will rise to form a temperature gradient, while low-temperature air will sink relatively. By using this temperature gradient, the approximate direction of the high-temperature area at the air outlet of the air conditioner can be determined;

[0015] The energy-saving control unit is used to collect the processed data information, and by understanding the temperature, distance and general direction of the area to be cooled, the proportional relationship between wind pressure and distance is matched, so as to obtain the required wind pressure, and the area where the temperature is not obviously cooled is cooled by controlling the wind pressure;

[0016] The inverter control unit is used to control the output power of the first motor according to actual conditions;

[0017] The blade angle control unit is used to control the operating state of the second motor according to actual conditions, thereby adjusting the angle of the blade.

[0018] The beneficial effects of the centrifugal fan for an air conditioning system of the present invention are as follows:

[0019] The gear ring is connected to the gear ring through the meshing of the gear of the second motor output shaft, the protrusions arranged on the outer surface of the gear ring are hinged to the blades, and the gear ring and the transmission ring are connected by the connecting rod, so that the blades can be driven by the second motor to be adjusted, and the wind pressure and air volume can be adjusted according to actual requirements by adjusting the blades, which solves the problem of insufficient wind pressure in traditional air-conditioning systems, resulting in unclear air temperature drop in the distance and uneven air flow. The first motor and the second motor are controlled by the centrifugal fan control system, which has the advantage of adjusting according to actual needs to achieve energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a centrifugal fan for an air conditioning system according to the present invention;

[0021] Figure 2 is a front cross-sectional view of the front plate of the present invention;

[0022] Figure 3 It is a front cross-sectional view of the wind pressure mechanism of the present invention without the limiting groove;

[0023] Figure 4 It is a right side cross-sectional schematic diagram of the connection mode between the front plate and the wind pressure mechanism of the present invention, with the AA line as the section line;

[0024] Figure 5 It is a schematic diagram of the flow of the centrifugal fan control system of the present invention;

[0025] Among them, 1. shell; 2. blades; 3. first motor; 4. wind pressure mechanism; 5. front plate; 6. connecting rod; 101. air inlet; 102. air outlet; 401. second motor; 402. gear ring; 403. protrusion; 404. limit ring; 405. slide groove; 501. transmission ring; 502. limit groove. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figure 1-5 As shown, a centrifugal fan for an air conditioning system comprises a housing 1, blades 2, a first motor 3, an air pressure mechanism 4, a front plate 5 and a connecting rod 6; the housing 1 is provided with an air inlet 101 at the front end, and a horizontal air outlet 102 at the side; the housing 1 is fixedly installed with a first motor 3 at the end away from the air inlet 101, the output shaft of the first motor 3 is fixedly connected to the air pressure mechanism 4, the air pressure mechanism 4 is fixedly connected to the front plate 5 through the connecting rod 6, and the front plate 5 is rotatably installed on the inner surface of the housing 1 and is located at the air inlet 101, see Figure 1-2 and Figure 4 ; The wind pressure mechanism 4 is composed of a second motor 401, a gear ring 402 and a limit ring 404. The second motor 401 is fixedly embedded in the wind pressure mechanism 4, and the output shaft gear of the second motor 401 is meshedly connected to the gear ring 402; the first motor 3 and the second motor 401 are both electrically connected to the centrifugal fan control system, and the centrifugal fan control system includes a data collection unit, a data cleaning unit, a distance data analysis unit, a temperature data analysis unit, a direction data analysis unit, an energy-saving control unit, a frequency converter control unit and a blade angle control unit; the wind pressure mechanism 4, the front plate 5, the connecting rod 6 and the blades 2 therebetween are rotated synchronously by the first motor 3, so that the air is accelerated by the centrifugal force of the blades 2 and blown out through the air outlet 102.

[0028] The wind pressure mechanism 4 also includes a transmission ring 501, and twelve protrusions 403 are equidistantly arranged on the outer surfaces of the transmission ring 501 and the gear ring 402. The limiting ring 404 is rotatably connected to the transmission ring 501 and the gear ring 402 respectively. The limiting ring 404 is provided with a slide groove 405 corresponding to the position of the protrusion 403 of the transmission ring 501, and the limiting ring 404 is also provided with a slide groove 405 corresponding to the position of the protrusion 403 of the gear ring 402. The size of the slide groove 405 is larger than that of the protrusion 403; the protrusion 403 can reciprocate in the circumferential direction in the slide groove 405, and the blade 2 can make a circular motion around the protrusion 403 in the limiting groove 502; Figure 4 , line AA passes through the slide groove 405 of the limiting ring 404, that is, the entity part of the limiting ring 404 is not cut open, so Figure 4 The position of the limiting ring 404 is not shown, and the position of the sliding groove 405 in the limiting ring 404 is shown.

[0029] The gear ring 402 is fixedly connected with four connecting rods 6 near the end of the transmission ring 501, and the other end of the connecting rod 6 is fixedly connected to the transmission ring 501, and the transmission ring 501 is connected to the front plate 5; when the first motor 3 is working, it drives the connecting rod 6 to transmit the transmission ring 501, and the transmission ring 501 then drives the front plate 5 to rotate, so that the front plate 5 rotates synchronously with the wind pressure mechanism 4, thereby generating centrifugal force to accelerate the air through the rotation of the blades 2 of the two.

[0030] The limiting ring 404 is provided with a limiting hole connected to the slide groove 405, and the two ends of the blade 2 on one side facing the limiting ring 404 respectively pass through the limiting holes and enter the slide groove 405, and the upper end of the protrusion 403 is hinged to the bottom of the blade 2, and the wind pressure mechanism 4 and the front plate 5 are provided with a limiting groove 502 corresponding to the position of the blade 2; when the protrusion 403 rotates clockwise in the slide groove 405, it drives the blade 2 to move synchronously in the limiting groove 502, so that the angle between the blade 2 and the limiting ring 404 increases, that is, the angle of the blade 2 is adjusted to a more open position, thereby reducing wind resistance and increasing air volume; when the protrusion 403 rotates counterclockwise, it drives the blade 2 to move synchronously in the limiting groove 502, so that the angle between the blade 2 and the limiting ring 404 decreases, that is, the angle of the blade 2 is adjusted to a more closed position, thereby increasing wind resistance, increasing wind pressure, and then flowing out from the horizontal air outlet 102.

[0031] The output end of the data collection unit is unidirectionally connected to the output end of the data cleaning unit, the output end of the data cleaning unit is unidirectionally connected to the input ends of the distance data analysis unit, the temperature data analysis unit and the direction data analysis unit, the output ends of the distance data analysis unit, the temperature data analysis unit and the direction data analysis unit are unidirectionally connected to the input end of the energy-saving control unit, and the energy-saving control unit is unidirectionally connected to the input ends of the inverter control unit and the blade angle control unit;

[0032] The data collection unit is used to collect data information obtained by the distance and temperature measuring sensor arranged at the air outlet of the air conditioner;

[0033] The data cleaning unit is used to clean the collected data information, including denoising, outlier processing, format conversion and elimination of irrelevant features;

[0034] The distance data analysis unit is used to obtain the distance between the area where the ambient temperature is greatly different from the set temperature value (hereinafter referred to as the temperature difference area) and the air conditioner. The specific principle is that the sensor emits an infrared beam and receives the light signal reflected by the object in the temperature difference area, and determines the distance between the temperature difference area and the air conditioner by measuring the reflection time of the light;

[0035] The temperature data analysis unit is used to measure the temperature of the environment. The specific principle is to measure the intensity of the infrared radiation reflected by the object in the temperature difference area to determine the ambient temperature of the temperature difference area;

[0036] The direction data analysis unit is used to process the collected temperature information by performing temperature gradient processing. The specific principle is that high-temperature air will rise to form a temperature gradient, while low-temperature air will sink relatively. By using this temperature gradient, the approximate direction of the high-temperature area at the air outlet of the air conditioner can be determined;

[0037] The energy-saving control unit is used to collect the processed data information, and by understanding the temperature, distance and general direction of the area to be cooled, the proportional relationship between the wind pressure and the distance is matched, so as to obtain the required wind pressure, and the high temperature area where the cooling is not obvious is cooled by controlling the wind pressure; the specific process is to judge the distance and general direction of the cooling area, and thus adjust the wind pressure by controlling the opening degree of the blade 2, so that the cold wind can be delivered to the cooling area, and the direction of the air supply can be adjusted by controlling the wind shield at the air supply outlet of the air conditioner;

[0038] The inverter control unit is used to control the output power of the first motor 3 according to actual conditions, control the air intake, thereby controlling the rotation speed of the blade 2, and synchronously adjusting the wind pressure and air volume of the cold air output by the centrifugal fan;

[0039] The blade angle control unit is used to control the operating state of the second motor 401 according to actual conditions, thereby adjusting the angle of the blade 2 and controlling the wind pressure.

[0040] The specific implementation is as follows: First, data is collected and cleaned through the centrifugal fan control system, and then the data information of the area to be cooled is obtained through the distance data analysis unit, the temperature data analysis unit and the direction data analysis unit, and the energy-saving control unit is used to summarize and judge, so as to control the rotation power of the first motor 3 through the inverter control unit, and control the operation of the second motor 401 through the blade angle control unit, so as to adjust the opening state of the blade 2 and adjust the wind pressure; specifically: when it is impossible to provide enough cold air to reach a distant place, resulting in an insignificant temperature drop, the gear 401 is driven to rotate to adjust the gear 402. When the ring 402 rotates counterclockwise, the protrusion 403 rotates accordingly, and the protrusion 403 adjusts the angle of the blade 2 in the limiting groove 502 to a more closed position, and at the same time increases the output power of the first motor 3; when the first motor 3 drives the front plate 5 to operate, a vortex is formed at the air inlet 101, and air is sucked in from the air inlet, and the wind is blown out from the horizontal air outlet 102 through the relatively closed end of the blade 2. Because the angle between the blade 2 and the limiting ring 404 is small, the wind resistance is increased and the wind pressure is increased. When the wind is blown out from the air outlet 102, the wind pressure meets the minimum pressure that can be blown to the cooling area, so that the cooled air can be sent to a distant place. By utilizing a centrifugal fan control system to control the first motor 3 and the second motor 401, the rotation speed of the centrifugal fan and the degree of opening of the blades 2 are adjusted to provide cold air with different air volumes and pressures, thereby solving the problem mentioned in the background technology that "when the current air-conditioning system is in use, the air supply volume or air pressure of the air-conditioning system is insufficient when the air-conditioning air supply distance is long, and sufficient cold air cannot be provided to reach distant areas, resulting in an unclear drop in air temperature in the distant area, or the direction of the air-conditioning air supply port may be inappropriate, resulting in uneven air flow, and some areas cannot be sufficiently cooled."

[0041] The present invention and its embodiments are described above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the scope of protection of the present invention.

Claims

1. A centrifugal fan for an air conditioning system, characterized in that: The invention comprises a housing (1), blades (2), a first motor (3), a wind pressure mechanism (4), a front plate (5) and a connecting rod (6); the housing (1) is provided with an air inlet (101) at the front end, and a horizontal air outlet (102) is provided at the side; the housing (1) is fixedly mounted with a first motor (3) at the end away from the air inlet (101); the output shaft of the first motor (3) is fixedly connected to the wind pressure mechanism (4); the wind pressure mechanism (4) is fixedly connected to the front plate (5) via the connecting rod (6); the front plate (5) is rotatably mounted on the inner surface of the housing (1) at the air inlet (101); the wind pressure mechanism ( 4) is composed of a second motor (401), a gear ring (402) and a limit ring (404), wherein the second motor (401) is fixedly embedded in the wind pressure mechanism (4), and the output shaft gear of the second motor (401) is meshedly connected to the gear ring (402); the first motor (3) and the second motor (401) are both electrically connected to a centrifugal fan control system, and the centrifugal fan control system includes a data collection unit, a data cleaning unit, a distance data analysis unit, a temperature data analysis unit, a direction data analysis unit, an energy-saving control unit, a frequency converter control unit and a blade angle control unit; The wind pressure mechanism (4) comprises a transmission ring (501) and a limiting ring (404); twelve protrusions (403) are equidistantly arranged on the outer surfaces of the transmission ring (501) and the gear ring (402); the limiting ring (404) is rotatably connected to the transmission ring (501) and the gear ring (402); the limiting ring (404) is provided with a slide groove (405) corresponding to the position of the protrusion (403); the size of the slide groove (405) is larger than the size of the protrusion (403); Four connecting rods (6) are fixedly connected to the end of the gear ring (402) close to the transmission ring (501), and the other ends of the connecting rods (6) are fixedly connected to the transmission ring (501); The limiting ring (404) is provided with a limiting hole connected to the sliding groove (405), the blade (2) passes through the limiting hole, and the upper end of the protrusion (403) is hinged to the bottom of the blade (2); the wind pressure mechanism (4) and the front plate (5) are provided with a limiting groove (502) corresponding to the position of the blade (2).

2. A centrifugal fan control system for a centrifugal fan of an air conditioning system according to claim 1, characterized in that: The output end of the data collection unit is unidirectionally connected to the output end of the data cleaning unit, the output end of the data cleaning unit is unidirectionally connected to the input ends of the distance data analysis unit, the temperature data analysis unit and the direction data analysis unit, the output ends of the distance data analysis unit, the temperature data analysis unit and the direction data analysis unit are unidirectionally connected to the input end of the energy-saving control unit, and the energy-saving control unit is unidirectionally connected to the input ends of the inverter control unit and the blade angle control unit.

3. A centrifugal fan for an air conditioning system according to claim 2, characterized in that: The data collection unit is used to collect data information obtained by the distance and temperature measuring sensor arranged at the air outlet of the air conditioner; The data cleaning unit is used to clean the collected data information, including denoising, outlier processing, format conversion and elimination of irrelevant features; The distance data analysis unit is used to obtain the distance between the area where the temperature is greatly different from the set temperature value and the air conditioner. The specific principle is that the sensor emits an infrared beam and receives the reflected light signal, and determines the distance of the object by measuring the reflection time and intensity of the light; The temperature data analysis unit is used to measure the temperature of the environment. The specific principle is to measure the intensity of the received infrared radiation to determine the temperature of the environment and the object; The direction data analysis unit is used to perform temperature gradient processing on the collected temperature information. The specific principle is that high-temperature air will rise to form a temperature gradient, while low-temperature air will sink relatively. By using this temperature gradient, the approximate direction of the high-temperature area at the air outlet of the air conditioner can be determined; The energy-saving control unit is used to collect the processed data information, and by understanding the temperature, distance and general direction of the area to be cooled, the proportional relationship between wind pressure and distance is matched, so as to obtain the required wind pressure, and the area where the temperature is not obviously cooled is cooled by controlling the wind pressure; The frequency converter control unit is used to control the output power of the first motor (3) according to actual conditions; The blade angle control unit is used to control the operating state of the second motor (401) according to actual conditions, thereby adjusting the angle of the blade (2).

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