A high-efficiency and low-carbon heating device for heat-insulating greenhouses

Abstract

The present invention relates to a high-efficiency and low-carbon heating device for heat-insulating greenhouses in the field of greenhouse air heaters. The device comprises a greenhouse body with a temperature sensor installed inside, an iron cabinet installed between the two greenhouse bodies, a heater installed on the surface of the greenhouse body, an air blower installed on the inner wall of the greenhouse body, a plurality of equidistantly arranged Y-shaped brackets installed inside the greenhouse body, an air duct installed on the top of the Y-shaped bracket, a plurality of air outlet pipes and self-priming pipes installed equidistantly through the surface of the air duct, a built-in heat storage pipe installed inside the air duct, an exhaust pipe connected to the tail end of the built-in heat storage pipe, a CO2 concentration sensor installed on the surface of the self-priming pipe, the air duct and the air outlet pipes evenly arranged on the surface of the air duct can ensure the uniformity of heating in the greenhouse body, and the heat of CO2 can be discharged without loss through the self-priming pipe and the CO2 concentration sensor on the surface, the electromagnetic block, the magnetic slider, the restraint spring, the built-in heat storage pipe, the isolation plate and the exhaust pipe.

Description

Technical Field

[0001] The present invention relates to a high-efficiency and low-carbon heating device for a thermal insulation blanket greenhouse, in particular to a high-efficiency and low-carbon heating device for a thermal insulation blanket greenhouse applied in the field of greenhouse air heaters. Background Art

[0002] Greenhouse insulation blankets have become important equipment in agricultural production. Greenhouse insulation blankets are mainly composed of an external insulation layer covering a greenhouse film. By using greenhouse insulation blankets, the heat consumption inside the greenhouse can be reduced, thereby reducing the cost of insulation and heating in the greenhouse. In cold seasons, the interior of the greenhouse needs to be heated to avoid frostbite of crops planted in the greenhouse, but the heating effect needs to be controlled to avoid excessively high temperatures in the greenhouse, which may cause burns to the crops.

[0003] In order to solve the problem of uneven heating in greenhouses, a certain greenhouse heating equipment on the market adopts a design that adjusts the air flow to ensure uniform heating, and has a certain market share.

[0004] The specification of Chinese invention patent CN202310278543.9 discloses a variable frequency heater for a greenhouse, including a heater main body and an air outlet mechanism installed on the heater main body. The interior of the heater main body is provided with a PCB circuit board, a frequency converter, a fan and a heater. The air outlet mechanism is connected to the output end of the fan, and the air outlet volume of the fan is proportional to the air outlet area of the air outlet mechanism. The air outlet mechanism includes a main air hood fixedly connected to the heater main body and connected to the fan. The main air hood is fixedly connected to a plurality of small air outlet units connected to the main air hood. The plurality of small air outlet units are arranged in multiple rows. The main air hood is fixedly connected to a sealing component for sealing the small air outlet units. It can reduce the difference in heat energy loss when hot air flows inside the air outlet mechanism in high-frequency and low-frequency states, thereby improving the accuracy of temperature control.

[0005] During operation, these greenhouse heating systems adjust the airflow to achieve uniform heating within the greenhouse. However, in practice, CO2 levels within the greenhouse must be controlled within a certain range to prevent excessive CO2 concentrations from affecting crop growth. Furthermore, as CO2 is discharged, it removes heat from the greenhouse, increasing heating costs and indirectly increasing carbon emissions. Summary of the Invention

[0006] In view of the above-mentioned existing technologies, the technical problem to be solved by the present invention is how to ensure that the CO2 in the greenhouse can be discharged without heat loss on the basis of ensuring uniform heating supply in the greenhouse.

[0007] To solve the above problems, the present invention provides a high-efficiency and low-carbon heating device for a heat-insulating quilt greenhouse, comprising a greenhouse body with a temperature sensor installed inside, an iron cabinet installed between the two greenhouse bodies, a liquefied petroleum gas tank installed inside the iron cabinet, a leakage sensor installed on the inner wall of the iron cabinet, a heater installed on the surface of the greenhouse body, and the liquefied petroleum gas tank is connected to the heater through a pipeline, an air blower is installed on the inner wall of the greenhouse body, a plurality of equidistantly arranged Y-shaped brackets are installed inside the greenhouse body, an air duct is installed on the top of the Y-shaped bracket, and one end of the air duct is sealed and connected to the output end of the air blower;

[0008] The surface of the air duct is equidistantly penetrated with multiple air outlet pipes and a self-priming pipe located below the air outlet pipe. A solenoid valve electrically connected to the temperature sensor is installed on the surface of the air outlet pipe. A built-in heat storage pipe is installed inside the air duct, and one end of the self-priming pipe extends into the interior of the built-in heat storage pipe. The tail end of the built-in heat storage pipe is connected to an exhaust pipe with a built-in check valve, and the tail end of the exhaust pipe extends to the back of the greenhouse body. A CO2 concentration sensor is installed on the surface of the self-priming pipe.

[0009] In the above-mentioned high-efficiency and low-carbon heating device for the insulated greenhouse, the air duct and the evenly arranged air outlet pipes on the surface of the air duct are used to ensure the uniformity of heating in the greenhouse body. In addition, the self-priming pipe and the surface CO2 concentration sensor, electromagnetic block, magnetic slider, restraint spring, built-in heat storage tube, isolation plate and exhaust pipe are used to achieve lossless emission of CO2 heat.

[0010] As a further improvement of the present application, a one-way valve is installed through the surface of the self-priming pipe located in the built-in heat storage pipe, an electromagnetic block is fixed to the inner wall of one end of the self-priming pipe, a constraint spring is connected to the surface of the electromagnetic block, the end of the constraint spring is connected to a magnetic slider that attracts the electromagnetic block, and the CO2 concentration sensor is electrically connected to the electromagnetic block.

[0011] As a further improvement of the present application, the cross section of the magnetic slider is the same as the cross section of the inner wall of the self-priming tube, and in the initial state, the magnetic slider is located on the right side of the one-way valve.

[0012] As a further improvement of the present application, a water tank is installed on the back of the greenhouse body, a suction pump is installed on the top of the water tank, an isolation plate is installed inside the built-in heat storage tube, and the end of the isolation plate is fixedly connected to the inner wall of the built-in heat storage tube, a drip irrigation pipe is installed through the inner wall of the built-in heat storage tube, and the tail end of the drip irrigation pipe extends through to the outside of the air duct.

[0013] As a further improvement of the present application, the built-in heat storage tube is made of thermal insulation material, and the isolation plate is made of thermal insulation and breathable material.

[0014] As a further improvement of the present application, an electromagnetic control valve is installed on the surface of the drip irrigation pipe, a humidity sensor is installed inside the greenhouse body, and the humidity sensor is electrically connected to the electromagnetic control valve.

[0015] As a further improvement of the present application, the output end of the suction pump is connected to a hose extending to below the isolation plate in the built-in heat storage tube, and the input end of the suction pump is connected to a water pipe whose tail end extends to the inside of the water tank.

[0016] As another improvement of the present application, sodium peroxide particles are laid on the top of the isolation plate, and an oxygen return pipe is installed through the top of the built-in heat storage pipe, and the tail end of the oxygen return pipe extends to the outside of the air duct and is located on one side of the drip irrigation pipe.

[0017] To sum up, the present invention utilizes air ducts and air outlet pipes evenly arranged on the surface of the air ducts to ensure the uniformity of heating in the greenhouse body. In addition, through the self-priming pipe and the CO2 concentration sensor, electromagnetic block, magnetic slider, restraint spring, built-in heat storage pipe, isolation plate and exhaust pipe on the surface, when the CO2 concentration inside the greenhouse body exceeds the safe concentration for planting, the suction of the self-priming pipe is used to suck the air in the greenhouse body into the space below the isolation plate in the built-in heat storage pipe, which can not only realize heat exchange, but also discharge the CO2 after heat exchange, avoiding excessive CO2 remaining in the greenhouse body to cause adverse effects on crops. In addition, the water that has undergone heat exchange can be drip-irrigated through the drip irrigation pipe, and the heat exchanged by CO2 can be returned to the greenhouse body, realizing the lossless discharge of CO2 heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the first and second implementation methods of this application;

[0019] Figure 2 This is a schematic diagram of the installation of the greenhouse body, water tank and suction pump in the first and second embodiments of this application;

[0020] Figure 3 This is a cross-sectional view of the air duct of the first and second embodiments of the present application;

[0021] Figure 4 For the first and second embodiments of this application Figure 3 A is an enlarged schematic diagram;

[0022] Figure 5 Schematic diagram of the interior of the air duct in the first and second embodiments of the present application;

[0023] Figure 6 Schematic diagram of the first and second embodiments of the present application where warm air is released into the interior of the greenhouse body through the air duct;

[0024] Figure 7Schematic diagram of the state of lossless discharge of CO2 heat from the greenhouse body in the first and second embodiments of this application;

[0025] Figure 8 This is a cross-sectional view of the second embodiment of the present application in which the oxygen return pipe is installed inside the built-in heat storage pipe;

[0026] Figure 9 This is a schematic diagram of the working status of the oxygen return pipe in the second embodiment of the present application.

[0027] Description of the numbers in the figure:

[0028] 1. Greenhouse body; 2. Heating machine; 3. Iron cabinet; 4. Air blower; 5. Y-shaped bracket; 6. Air duct; 61. Air outlet pipe; 62. Self-priming pipe; 621. One-way valve; 622. Electromagnetic block; 623. Magnetic slider; 624. Constraint spring; 7. Suction pump; 8. Water tank; 9. Built-in heat storage pipe; 91. Isolation board; 92. Exhaust pipe; 93. Drip irrigation pipe; 94. Oxygen return pipe. DETAILED DESCRIPTION

[0029] The following describes two implementation methods of the present application in detail with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1-Figure 7 The invention shows an efficient and low-carbon heating device for a heat-insulating quilt greenhouse, comprising a greenhouse body 1 with a temperature sensor installed inside, an iron cabinet 3 installed between two greenhouse bodies 1, a liquefied petroleum gas tank installed inside the iron cabinet 3, a leakage sensor installed on the inner wall of the iron cabinet 3, a heater 2 installed on the surface of the greenhouse body 1, and the liquefied petroleum gas tank is connected to the heater 2 via a pipeline, an air blower 4 installed on the inner wall of the greenhouse body 1, and a plurality of equidistantly arranged Y-shaped brackets 5 installed inside the greenhouse body 1, an air duct 6 installed on the top of the Y-shaped bracket 5, and one end of the air duct 6 is sealed to the output end of the air blower 4;

[0032] The surface of the air duct 6 is equidistantly penetrated with multiple air outlet pipes 61 and a self-priming pipe 62 located below the air outlet pipe 61. A solenoid valve electrically connected to the temperature sensor is installed on the surface of the air outlet pipe 61. A built-in heat storage pipe 9 is installed inside the air duct 6, and one end of the self-priming pipe 62 extends through the interior of the built-in heat storage pipe 9. The tail end of the built-in heat storage pipe 9 is connected to an exhaust pipe 92 with a built-in check valve, and the tail end of the exhaust pipe 92 extends through to the back of the greenhouse body 1. A CO2 concentration sensor is installed on the surface of the self-priming pipe 62.

[0033] A one-way valve 621 is installed on the surface of the self-priming pipe 62 located inside the built-in heat storage pipe 9. An electromagnetic block 622 is fixed to the inner wall of one end of the self-priming pipe 62. A restraining spring 624 is connected to the surface of the electromagnetic block 622. The end of the restraining spring 624 is connected to a magnetic slider 623 that attracts the electromagnetic block 622, and the CO2 concentration sensor is electrically connected to the electromagnetic block 622.

[0034] The cross section of the magnetic slider 623 is the same as the cross section of the inner wall of the self-priming tube 62 . In the initial state, the magnetic slider 623 is located on the right side of the one-way valve 621 .

[0035] A water tank 8 is installed on the back of the greenhouse body 1, a suction pump 7 is installed on the top of the water tank 8, an isolation plate 91 is installed inside the built-in heat storage pipe 9, and the end of the isolation plate 91 is fixedly connected to the inner wall of the built-in heat storage pipe 9, a drip irrigation pipe 93 is installed through the inner wall of the built-in heat storage pipe 9, and the tail end of the drip irrigation pipe 93 extends to the outside of the air duct 6.

[0036] The built-in heat storage tube 9 is made of a thermal insulation material, and the isolation plate 91 is made of a thermal insulation and breathable material.

[0037] An electromagnetic control valve is installed on the surface of the drip irrigation pipe 93, and a humidity sensor is installed inside the greenhouse body 1, and the humidity sensor is electrically connected to the electromagnetic control valve.

[0038] The output end of the suction pump 7 is connected to a hose extending to below the isolation plate 91 in the built-in heat storage tube 9 , and the input end of the suction pump 7 is connected to a water pipe whose tail end extends to the inside of the water tank 8 .

[0039] Specifically, when heating the interior of the greenhouse body 1, the liquefied petroleum gas tank is used as an energy supply, so that the heater 2 can deliver warm air to the interior of the air duct 6 through the blower 4, so that the temperature inside the greenhouse body 1 is kept constant (it can be controlled at around 18°C according to the needs of crop growth). When heating, the warm air is evenly released into the interior of the greenhouse body 1 through the air outlet pipe 61, ensuring that the interior of the greenhouse body 1 is heated evenly.

[0040] The leakage sensor can detect whether the liquefied petroleum gas tank inside the iron cabinet 3 is leaking, thereby ensuring the safety of the use of the heating device;

[0041] When the CO2 concentration inside the greenhouse body 1 exceeds the safe concentration for planting, the CO2 concentration sensor sends a start signal to the electromagnetic block 622. At this time, the electromagnetic block 622 is started intermittently, causing the magnetic slider 623 to perform reciprocating piston motion in the self-absorption pipe 62, thereby generating a suction effect to suck the gas inside the greenhouse body 1 into the built-in heat storage pipe 9. Since water is stored in the space below the isolation plate 91 in the built-in heat storage pipe 9, the gas entering the space can be subjected to heat absorption treatment. In addition, since the isolation plate 91 is made of a heat-insulating and breathable material, and the gas entering the space below the isolation plate 91 is mostly insoluble in water, it will be transferred to the top of the isolation plate 91 after heat transfer, and then discharged through the exhaust pipe 92, realizing the heat-free discharge of CO2;

[0042] The temperature of the water in the space below the isolation plate 91 absorbs heat and then returns to the surface of the crops inside the greenhouse body 1 through the drip irrigation pipe 93. Since the heating temperature inside the greenhouse body 1 is relatively low, the temperature of the water in the built-in heat storage pipe 9 is also relatively low. Therefore, drip irrigation will not have a negative impact on the crops. At the same time, the heat absorbed by the water can be released back into the interior of the greenhouse body 1, effectively avoiding the loss of heat inside the greenhouse body 1, thereby ensuring the low carbon performance of the greenhouse body 1 during heating.

[0043] The temperature sensor is used to monitor the air humidity in the greenhouse body 1, thereby avoiding the phenomenon of crop root rot caused by unnecessary drip irrigation, thereby protecting the safety of crops inside the greenhouse body 1.

[0044] Second implementation method:

[0045] Figure 8-Figure 9 , wherein identical or corresponding components to the first embodiment are designated by corresponding reference numerals. For simplicity, only the differences from the first embodiment are described below. This second embodiment differs from the first embodiment in that sodium peroxide particles are laid on top of the isolation plate 91, and an oxygen return pipe 94 is installed through the top of the built-in heat storage pipe 9. The tail end of the oxygen return pipe 94 extends to the outside of the air duct 6 and is located on one side of the drip irrigation pipe 93.

[0046] Specifically, the gas transferred to the top of the isolation plate 91 contains a large amount of CO2, which will react with the sodium peroxide particles to produce sodium carbonate and oxygen. The oxygen can then return to the interior of the greenhouse body 1 through the oxygen return pipe 94, converting the CO2 in the greenhouse body 1 into oxygen necessary for crop growth, thereby realizing waste utilization and further reducing the carbon emissions of the greenhouse body 1.

[0047] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A high-efficiency and low-carbon heating device for a heat-insulating greenhouse, comprising a greenhouse body (1) with a temperature sensor installed inside, characterized in that: An iron cabinet (3) is installed between the two greenhouse bodies (1), a liquefied petroleum gas tank is installed inside the iron cabinet (3), a leakage sensor is installed on the inner wall of the iron cabinet (3), a heater (2) is installed on the surface of the greenhouse body (1), and the liquefied petroleum gas tank is connected to the heater (2) through a pipeline, an air blower (4) is installed on the inner wall of the greenhouse body (1), a plurality of equidistantly arranged Y-shaped brackets (5) are installed inside the greenhouse body (1), an air duct (6) is installed on the top of the Y-shaped bracket (5), and one end of the air duct (6) is sealed and connected to the output end of the air blower (4); The surface of the air duct (6) is equidistantly penetrated with a plurality of air outlet pipes (61) and a self-priming pipe (62) located below the air outlet pipe (61); the surface of the air outlet pipe (61) is installed with a solenoid valve electrically connected to a temperature sensor; a built-in heat storage pipe (9) is installed inside the air duct (6), and one end of the self-priming pipe (62) extends through the inside of the built-in heat storage pipe (9); the tail end of the built-in heat storage pipe (9) is connected to an exhaust pipe (92) with a built-in check valve, and the tail end of the exhaust pipe (92) extends through the back of the greenhouse body (1); and a CO2 concentration sensor is installed on the surface of the self-priming pipe (62); A water tank (8) is installed on the back of the greenhouse body (1), a suction pump (7) is installed on the top of the water tank (8), an isolation plate (91) is installed inside the built-in heat storage pipe (9), and the end of the isolation plate (91) is fixedly connected to the inner wall of the built-in heat storage pipe (9), a drip irrigation pipe (93) is installed through the inner wall of the built-in heat storage pipe (9), and the tail end of the drip irrigation pipe (93) extends through the outside of the air duct (6); Sodium peroxide particles are laid on the top of the isolation plate (91), and an oxygen return pipe (94) is installed through the top of the built-in heat storage pipe (9), and the tail end of the oxygen return pipe (94) extends through the outside of the air duct (6); A one-way valve (621) is installed through the surface of the self-priming pipe (62) located inside the built-in heat storage pipe (9), an electromagnetic block (622) is fixed to the inner wall of one end of the self-priming pipe (62), a restraining spring (624) is connected to the surface of the electromagnetic block (622), an end of the restraining spring (624) is connected to a magnetic slider (623) that attracts the electromagnetic block (622), and a CO2 concentration sensor is electrically connected to the electromagnetic block (622).

2. The high-efficiency and low-carbon heating device for heat preservation blanket greenhouse according to claim 1 is characterized in that: The cross section of the magnetic slider (623) is the same as the cross section of the inner wall of the self-priming tube (62). In the initial state, the magnetic slider (623) is located on the right side of the one-way valve (621).

3. The high-efficiency and low-carbon heating device for heat preservation blanket greenhouse according to claim 1 is characterized in that: The built-in heat storage tube (9) is made of a thermal insulation material, and the isolation plate (91) is made of a thermal insulation and breathable material.

4. The high-efficiency and low-carbon heating device for heat preservation blanket greenhouse according to claim 1 is characterized in that: An electromagnetic control valve is installed on the surface of the drip irrigation pipe (93), and a humidity sensor is installed inside the greenhouse body (1), and the humidity sensor is electrically connected to the electromagnetic control valve.

5. The high-efficiency and low-carbon heating device for heat preservation blanket greenhouse according to claim 1 is characterized by: The output end of the suction pump (7) is connected to a hose extending to below the isolation plate (91) inside the built-in heat storage tube (9), and the input end of the suction pump (7) is connected to a water pipe whose tail end extends to the inside of the water tank (8).

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