An adjustable dead-angle-free suspended far-infrared heating system

Abstract

The present invention discloses an adjustable dead - angle - free suspended far - infrared heating system, which comprises a motor, a screw lifting device, a transmission shaft and a far - infrared radiation device: A motor for driving the screw lifting device is arranged at the upper end of the screw lifting device, the transmission shaft is arranged at the bottom end of the screw lifting device, the upper end of the transmission shaft is fixedly connected with a lead screw inside the screw lifting device, and the bottom end of the transmission shaft is connected with the far - infrared radiation device; The present invention can adjust the height position, the opening angle and the emission power of the far - infrared heating plate, so that there is no dead - angle in heating, and the whole plant is heated by more uniform and sufficient far - infrared radiation.

Description

Technical Field

[0001] The present invention relates to a heating system for a greenhouse, specifically an adjustable dead - angle hanging far - infrared heating system. Background Art

[0002] In recent years, it has been found that graphitized carbon materials have the property of efficiently emitting far - infrared rays after being electrified, so they are applied to the field of greenhouses. Patent CN203429332U discloses a weft yarn composed of a weft - wound carbon fiber fabric, hoping to solve the demand for large - area heating in agricultural greenhouses. However, the weft yarn composed of the weft - wound carbon fiber fabric has poor light - transmission performance, and the lighting inside the greenhouse cannot be interrupted; in addition, the reliability of the weft yarn composed of the weft - wound carbon fiber fabric is poor, and if there is a break in one place, the heating performance of the entire greenhouse will decline. Patents CN204031957U and CN111213526A respectively disclose technologies for heating greenhouses using carbon fiber and graphene electric heating plates. The difference is that the electric heating plate in the CN204031957U patent is in a fixed position above the plants, while the electric heating plate in the patent CN111213526A can rotate horizontally at a certain distance above the plants. The defect of the fixed electric heating plate technology is that it can only heat the outermost plant leaves and fruits, and cannot be adjusted, which easily leads to too high surface temperature of some parts of the plants; although the irradiation range of the horizontally rotating electric heating plate is larger than that of the fixed electric heating plate, for plants close to the ground or flowering and fruiting in the middle section, the effect of promoting growth by heating is limited; and the method of using a single motor to control a group of multiple heating plates will cause all the heating plates in the group to stop working when one heating plate has a problem, reducing the system reliability and heating efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is, aiming at the above - mentioned defects of the prior art, to provide an adjustable dead - angle hanging far - infrared heating system, which can timely adjust the height position, opening angle and emission power of the far - infrared heating plate according to the data fed back by the temperature detector, so as to achieve full radiation to the plants.

[0004] The technical solution of the present invention to solve the above technical problems is: An adjustable dead-angle-free suspended far-infrared heating system, including a motor, a screw lifting device, a transmission shaft, and a far-infrared radiation device. A motor for driving it is provided at the upper end of the screw lifting device. The transmission shaft is provided at the bottom end of the screw lifting device. The upper end of the transmission shaft is fixedly connected to the lead screw inside the screw lifting device, and the bottom end of the transmission shaft is connected to the far-infrared radiation device. The far-infrared radiation device includes a support rod, a support member, a telescopic rod, a push-pull member, a transmission chain, and a far-infrared radiation plate assembly. A plurality of support rods are equidistantly arranged outside the support member. One end of the support rod is fixedly connected to the support member in a soft connection manner. A far-infrared radiation plate assembly is arranged between adjacent two support rods. Both sides of the far-infrared radiation plate assembly are fixedly connected to the corresponding end of the support rod through fixing members. The push-pull member is arranged on the transmission shaft and can move up and down on the transmission shaft. One end of the transmission chain is fixedly connected to the push-pull member, and the other end is connected to a transmission gear on the output shaft of a small motor arranged on the transmission shaft. The push-pull member is driven to move up and down by the small motor. One end of the telescopic rod is fixedly connected to the push-pull member in a soft connection manner, and the other end is soft-connected to the support rod through a hinge.

[0005] The further limited technical solution of the present invention is:

[0006] The aforementioned far-infrared radiation plate assembly is composed of two far-infrared radiation plates soft-connected together through a connection ring, so that when gathering or unfolding, the soft connection can meet the change of the opening angle of the far-infrared radiation plate assembly.

[0007] Each of the aforementioned far-infrared radiation plates is a three-layer sandwich structure, including a far-infrared radiation layer and wear-resistant layers arranged above and below the far-infrared radiation layer for protecting it.

[0008] The aforementioned far-infrared radiation layer is made of one or a mixture of materials such as graphene, carbon nanotubes, graphite / expanded graphite, and carbon fiber.

[0009] A temperature detector is arranged on each of the aforementioned far-infrared radiation plates, which is convenient for detecting the surface temperature of the plants.

[0010] The aforementioned also includes a PLC controller respectively connected to the motor, the temperature detector, the far-infrared radiation plate, and the small motor.

[0011] The beneficial effects of the present invention are:

[0012] Driven by a motor, the screw lifting device of the present invention drives the up and down movement of a transmission shaft through a lead screw inside the screw lifting device, and then drives the rotation and up and down movement of an infrared radiation device. In this way, far-infrared radiation can reach the surfaces of plants at different positions and heights to the greatest extent. Moreover, by controlling the opening angle of the infrared radiation assembly, there is no dead angle in heating, enabling the entire plant to be heated by more uniform and sufficient far-infrared radiation, promoting its growth. At the same time, a planar far-infrared radiation plate is used as a heat source. Compared with conventional fossil fuels, far-infrared heating is not only environmentally friendly and does not produce any pollution, but also has advantages such as low initial installation cost, low usage cost, and a wide working environment temperature range compared with new heating equipment such as air source heat pumps. Moreover, since the absorption coefficient of air for far-infrared rays is very small, the loss of far-infrared radiation heat in the air is very small, and the vast majority of radiation energy can directly reach the surface of the plant, making the plant heated more sufficiently;

[0013] The present invention uses a PLC controller to achieve automatic operation. Users only need to set the temperature required for crop growth, which is convenient for operators to control the operation of the entire heating system. The PLC controller uses a Siemens controller with the model number 6ES7322-1BL00-0AA0. At the same time, this controller also has a failure / alarm function. When it detects that a certain heating plate has abnormal heating / opening angle, or the upper and lower motors are not working properly, it will immediately stop the operation of the corresponding heating plate, and the other heating plates will not be affected. At the same time, it will emit an alarm sound and display the number of the faulty heating plate, and wait for manual reset before continuing to work. This can effectively prevent the phenomenon that the entire system stops running due to the failure of some equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the main structure of the present invention;

[0015] Figure 2 is a schematic diagram of the structure of the infrared radiation device of the present invention;

[0016] Figure 3 is a schematic diagram of the structure of the far-infrared radiation plate;

[0017] In the figure: 1, motor; 2, screw lifting device; 3, transmission shaft; 4, support rod; 5, hinge; 6, supporting member; 7, telescopic rod; 8, temperature detector; 9, push-pull member; 10, transmission chain; 11, controller; 12, transmission gear; 13, far-infrared radiation plate; 14, connecting ring; 15, fixing member; 131, wear-resistant layer; 132, far-infrared radiation layer. DETAILED DESCRIPTION OF THE INVENTION Embodiment

[0018] This embodiment provides an adjustable dead-angle-free suspended far-infrared heating system, the structure of which is as Figures 1-3As shown in the figure, it includes a motor 1, a screw lifting device 2, a transmission shaft 3, a far-infrared radiation device, and a controller 11. A motor 1 for driving it is arranged at the upper end of the screw lifting device 2, and a transmission shaft 3 is arranged at the bottom end of the screw lifting device 2. The upper end of the transmission shaft is fixedly connected to the screw rod inside the screw lifting device, and the bottom end of the transmission shaft is connected to the far-infrared radiation device. The far-infrared radiation device includes a support rod 4, a support member 6, a telescopic rod 7, a push-pull member 9, a transmission chain 10, and a far-infrared radiation plate assembly. Four support rods 4 are equidistantly arranged outside the support member. One end of the support rod 4 is fixedly connected to the support member 6 in a soft connection manner. A far-infrared radiation plate assembly is arranged between two adjacent support rods. The far-infrared radiation plate assembly is composed of two far-infrared radiation plates 13 connected together in a soft connection manner through a connecting ring 14. Each far-infrared radiation plate 13 is a three-layer sandwich structure, including a far-infrared radiation layer 131 and wear-resistant layers 132 arranged above and below the far-infrared radiation layer to protect it. The far-infrared radiation layer is made of graphene material. The two sides of the far-infrared radiation plate assembly are fixed to the support rods at the corresponding ends through fixing members 15. A temperature detector 8 is arranged on each far-infrared radiation plate. The push-pull member is arranged on the transmission shaft and can move up and down on the transmission shaft. One end of the transmission chain 10 is fixed to the push-pull member, and the other end is connected to a transmission gear 12 on the output shaft of a small motor arranged on the transmission shaft. The small motor drives the push-pull member to move up and down. One end of the telescopic rod 7 is fixedly connected to the push-pull member 9 in a soft connection manner, and the other end is soft-connected to the support rod 4 through a hinge 5. The PLC controller is installed on the screw lifting device 2 and is respectively connected to the motor, the temperature detector, the far-infrared radiation plate, and the small motor.

[0019] In this embodiment, the controller realizes automatic control through the PLC circuit. First, the controller, according to the set height parameter, drives the transmission shaft to move up and down through the screw rod in the screw lifting device, lowering the far-infrared radiation assembly from the top of the greenhouse to a certain height. At the same time, the small motor drives the telescopic rod through the transmission chain, making it open at a certain angle so that its coverage range includes most of the plants. Secondly, the controller automatically controls one or more groups of far-infrared radiation plates to start or stop working according to the data fed back by each temperature sensor. The heating plates adopt an intermittent pulse working mode: when the temperature is lower than the set temperature, the far-infrared radiation plates start to heat; when the temperature is higher than the set temperature, the far-infrared radiation plates stop working.

[0020] In addition to the above embodiments, the present invention may have other implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. An adjustable dead-angle-free suspended far-infrared heating system, comprising a motor, a screw lifting device, a transmission shaft and a far-infrared radiation device. A motor for driving the screw lifting device is arranged at the upper end of the screw lifting device. The transmission shaft is arranged at the bottom end of the screw lifting device. The upper end of the transmission shaft is fixedly connected to a lead screw inside the screw lifting device. The bottom end of the transmission shaft is connected to the far-infrared radiation device. The far-infrared radiation device includes a support rod, a supporting member, a telescopic rod, a pushing and pulling member, a transmission chain and a far-infrared radiation plate assembly. A plurality of support rods are equidistantly arranged outside the supporting member. One end of each support rod is fixedly connected to the supporting member in a soft connection manner. A far-infrared radiation plate assembly is arranged between two adjacent support rods. Both sides of the far-infrared radiation plate assembly are fixed to the corresponding ends of the support rods through fixing members. The pushing and pulling member is arranged on the transmission shaft and can move up and down on the transmission shaft. One end of the transmission chain is fixed to the pushing and pulling member, and the other end is connected to a transmission gear on the output shaft of a small motor arranged on the transmission shaft. The small motor drives the pushing and pulling member to move up and down. One end of the telescopic rod is fixedly connected to the pushing and pulling member in a soft connection manner, and the other end is soft-connected to the support rod through a hinge. The far-infrared radiation plate assembly is formed by two far-infrared radiation plates being soft-connected together through a connecting ring; Each of the far-infrared radiation plates is a three-layer sandwich structure, including a far-infrared radiation layer and wear-resistant layers arranged above and below the far-infrared radiation layer for protecting it. At the same time, a temperature detector is arranged on each far-infrared radiation plate.

2. The adjustable omnidirectional suspended far-infrared heating system according to claim 1, wherein: The far-infrared radiation layer is made of one or a mixture of materials such as graphene, carbon nanotubes, graphite and carbon fiber.

3. The adjustable omnidirectional suspended far-infrared heating system according to claim 1, characterized in that: It further includes a PLC controller respectively connected to the motor, the temperature detector, the far-infrared radiation plate and the small motor.

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