Automatic air release temperature control device for greenhouse
By combining temperature sensors and motor fan blade systems, automated ventilation control of greenhouses has been achieved, solving the problem of poor natural ventilation and improving ventilation efficiency and air quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAICHENG YUNFENG ECOLOGICAL AGRI CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-12
AI Technical Summary
Existing greenhouse ventilation systems can only rely on natural wind, resulting in poor ventilation efficiency.
The system uses a temperature sensor to control the sealing components and the motor fan blade system. It automatically adjusts the ventilation mode by sensing the temperature inside the greenhouse, and achieves efficient ventilation by combining natural wind and refrigerated air.
This improves the ventilation effect of greenhouses, ensures air quality, and avoids the problem of poor ventilation caused by relying solely on natural wind.
Smart Images

Figure CN224343917U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of greenhouse technology, specifically to an automatic ventilation and temperature control device for greenhouses. Background Technology
[0002] Greenhouses are generally used for vegetable production. They provide vegetables with suitable temperature, humidity, and light, enabling them to grow quickly. Greenhouses also require regular ventilation to ensure the air quality inside.
[0003] When using a greenhouse, ventilation devices need to be installed for ventilation. However, when ventilating the greenhouse, the ventilation devices can only release air into the greenhouse through natural wind, which leads to poor ventilation effect of the ventilation devices. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an automatic ventilation and temperature control device for greenhouses, which has the advantages of good ventilation effect and solves the problem of poor ventilation effect of existing ventilation devices.
[0005] This utility model discloses an automatic ventilation and temperature control device for greenhouses, comprising a ventilation duct, a temperature sensor located at the top right side of the ventilation duct, a sealing assembly within the inner cavity of the ventilation duct, and ventilation assemblies at the top and bottom of the inner cavity. Each ventilation assembly includes a ventilation box, the outer side of which is fixedly connected to the ventilation duct. An air intake is located on the left side of the ventilation box, and an air outlet is located on the right side. Cooling plates are located on the left side of the top and bottom of the ventilation box's inner cavity, and a motor is located on the right side of the inner cavity. The motor's output end has fan blades. This utility model senses the temperature inside the greenhouse through the temperature sensor. When the temperature sensor detects that the temperature inside the greenhouse is too high, it triggers an external control... The controller operates the sealing assembly, which opens the ventilation channel inside the ventilation duct, allowing natural air to ventilate the greenhouse. If increased ventilation efficiency is required, the cooling plate activates, drawing air into the ventilation box through the intake. The cooling plate then cools the air inside the ventilation box. Simultaneously, the motor drives the fan blades, which blow the cooled air towards the outlet, thus ventilating the greenhouse. This improves ventilation efficiency and avoids the situation where the ventilation system can only ventilate the greenhouse using natural air, resulting in poor ventilation.
[0006] This utility model discloses an automatic ventilation and temperature control device for greenhouses. The sealing assembly includes an electric push rod located within the ventilation duct's inner cavity. The output end of the electric push rod is equipped with a sealing disc, and a sealing ring is fixedly fitted onto the surface of the sealing disc. The inner cavity of the ventilation duct has a sealing groove adapted to the sealing ring. L-plates are provided at both ends of the right side of the sealing disc, and a sliding rod is provided on the right side of the L-plate. Movable holes adapted to the sliding rod are provided at both ends of the right side of the ventilation duct's inner cavity. A limiting block is provided on the left side of the sliding rod. This utility model allows for... When the sealing disc is opened, the electric push rod first operates, driving the sealing disc to move. The L-plate and slide rod work together to move the sealing disc, and the slide rod moves stably through the movable hole inside the venting duct. The limit block can limit the movement of the slide rod. When the limit disc moves out of the venting duct, the venting duct can release air. When the venting duct needs to be sealed, the electric push rod first resets, driving the sealing disc to reset. When the sealing ring on the sealing disc moves into the sealing groove, the venting duct is sealed.
[0007] The automatic ventilation and temperature control device for greenhouses of this utility model has fixed brackets at both ends of the electric push rod on both sides of its surface, and the outer side of the fixed brackets is fixedly connected to the ventilation duct. The fixed brackets can fix the electric push rod, so that the electric push rod can be used more effectively and avoid the electric push rod from shaking during use, which would lead to the instability of the electric push rod movement limit plate.
[0008] The automatic ventilation and temperature control device for greenhouses of this utility model has a support frame fixedly connected to the top and bottom of the motor, and the outer side of the support frame is fixedly connected to the ventilation box. The support frame can fix the motor, so that the motor works better when in use and avoids the motor shaking during use, which would lead to unstable operation of the motor.
[0009] The present invention relates to an automatic ventilation and temperature control device for greenhouses, wherein the surface of the ventilation duct is fixedly fitted with an installation ring, and the inner cavity of the installation ring is provided with an installation hole. The installation ring facilitates the installation of the ventilation duct on a load-bearing wall, thus avoiding the inconvenience of installing the ventilation duct on a load-bearing wall.
[0010] The present invention relates to an automatic ventilation and temperature control device for greenhouses, wherein the surface of the sealing disc is fixedly connected to the sealing ring by an adhesive, and the surface of the sealing ring is in close contact with the sealing groove.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] 1. This utility model uses a temperature sensor to sense the temperature inside the greenhouse. When the temperature sensor detects that the temperature inside the greenhouse is too high, the external controller controls the sealing component to operate. The sealing component opens the ventilation channel inside the ventilation duct, and then natural wind ventilates the greenhouse through the ventilation duct. If it is necessary to improve the ventilation efficiency, the cooling plate operates, and air enters the ventilation box through the air intake. The cooling plate cools the air inside the ventilation box. At this time, the motor runs, driving the fan blades to blow the cooled air towards the air outlet, and then blows the cooled air into the greenhouse through the air outlet. This makes the ventilation effect of the greenhouse better and avoids the situation where the ventilation device can only ventilate the greenhouse through natural wind, which leads to poor ventilation effect of the ventilation device.
[0013] 2. When the sealing disc needs to be opened, the electric push rod first operates, which drives the sealing disc to move. The L-plate and slide rod work together to move the sealing disc. The slide rod moves stably through the movable hole in the venting tube. The limiting block can limit the movement of the slide rod. When the limiting disc moves out of the venting tube, the venting tube can release air. When the venting tube needs to be sealed, the electric push rod first resets, which drives the sealing disc to reset. When the sealing ring on the sealing disc moves into the sealing groove, the venting tube can be sealed.
[0014] The fixing bracket can fix the electric push rod, which makes the electric push rod perform better when used and avoids the electric push rod shaking during use, which would lead to the instability of the electric push rod movement limit plate.
[0015] The support frame can fix the motor in place, which makes the motor perform better during use and prevents the motor from shaking and becoming unstable.
[0016] The installation ring facilitates the installation of the ventilation duct on a load-bearing wall, avoiding the inconvenience of installing the ventilation duct on a load-bearing wall. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the left side structure of the ventilation duct of this utility model;
[0020] Figure 3 This is a schematic diagram of the air vent structure before installation of the sealing component and ventilation component of this utility model;
[0021] Figure 4 This is a schematic diagram of the sealing assembly structure of this utility model;
[0022] Figure 5 This is a schematic diagram of the ventilation component structure of this utility model;
[0023] Figure 6 This is a partial cross-sectional view of the ventilation box of this utility model.
[0024] In the diagram: 1. Ventilation duct; 2. Mounting ring; 3. Sealing assembly; 301. Electric push rod; 302. Fixing bracket; 303. Limiting block; 304. Sliding rod; 305. L-plate; 306. Sealing disc; 307. Sealing ring; 4. Temperature sensor; 5. Ventilation assembly; 501. Ventilation box; 502. Air outlet; 503. Air intake; 504. Cooling plate; 505. Motor; 506. Support frame; 507. Fan blade; 6. Sealing groove; 7. Movable hole. Detailed Implementation
[0025] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.
[0026] Please see Figure 1-6This utility model discloses an automatic ventilation and temperature control device for greenhouses, comprising a ventilation duct 1, a temperature sensor 4 located on the top right side of the ventilation duct 1, a sealing assembly 3 located inside the ventilation duct 1, and ventilation assemblies 5 located at the top and bottom of the ventilation duct 1. Each ventilation assembly 5 includes a ventilation box 501, the outer side of which is fixedly connected to the ventilation duct 1. An air intake 503 is located on the left side of the ventilation box 501, and an air outlet 502 is located on the right side. Cooling plates 504 are located on the left side of the top and bottom of the ventilation box 501. A motor 505 is located on the right side of the ventilation box 501, and fan blades 507 are located at the output end of the motor 505. This utility model senses the temperature inside the greenhouse through the temperature sensor 4. When the temperature sensor 4 detects that the temperature inside the greenhouse is too high, it controls the sealing assembly 3 via an external controller. When the sealing component 3 is activated, the ventilation channel inside the ventilation duct 1 is opened through the sealing component 3, and then natural wind is ventilated into the greenhouse through the ventilation duct 1. If it is necessary to enhance the ventilation efficiency of the greenhouse, the cooling plate 504 is activated at this time, and then air enters the ventilation box 501 through the air intake 503. The cooling plate 504 cools the air in the ventilation box 501. At this time, the motor 505 is activated, and the motor 505 drives the fan blades 507 to operate. The fan blades 507 blow the cooled air towards the air outlet 502, and the air outlet 502 blows the cooled air into the greenhouse. In this way, the ventilation effect of the greenhouse is better, avoiding the situation where the ventilation device can only ventilate the greenhouse through natural wind, which leads to poor ventilation effect of the ventilation device.
[0027] The sealing assembly 3 includes an electric push rod 301, which is located inside the ventilation duct 1. A sealing disc 306 is provided at the output end of the electric push rod 301. A sealing ring 307 is fixedly fitted onto the surface of the sealing disc 306. A sealing groove 6, compatible with the sealing ring 307, is provided inside the ventilation duct 1. L-plates 305 are provided at both ends of the right side of the sealing disc 306. A sliding rod 304 is provided on the right side of the L-plate 305. Movable holes 7, compatible with the sliding rod 304, are provided at both ends of the right side of the ventilation duct 1. A limiting block 303 is provided on the left side of the sliding rod 304. When the sealing disc 306 needs to be opened, the electric push rod 301 first operates... The sealing disc 306 is moved by the electric push rod 301. The L plate 305 and the slide rod 304 cooperate with the sealing disc 306 to move. The slide rod 304 moves stably through the movable hole 7 in the vent duct 1. The sliding rod 304 can be limited by the limiting block 303. When the limiting disc moves out of the vent duct 1, the vent duct 1 can vent. When the vent duct 1 needs to be sealed, the electric push rod 301 is reset first. The electric push rod 301 drives the sealing disc 306 to reset. When the sealing ring 307 on the sealing disc 306 moves into the sealing groove 6, the vent duct 1 can be sealed.
[0028] Both ends of the electric push rod 301 are fixedly connected to the fixing brackets 302 on both sides of the surface. The outer side of the fixing brackets 302 is fixedly connected to the ventilation duct 1. The fixing brackets 302 can fix the electric push rod 301, so that the electric push rod 301 performs better when in use and avoids the electric push rod 301 shaking during use, which would lead to the instability of the moving limit plate of the electric push rod 301.
[0029] The top and bottom of the motor 505 are fixedly connected to the support frame 506, and the outer side of the support frame 506 is fixedly connected to the ventilation box 501. The support frame 506 can fix the motor 505, so that the motor 505 performs better when in use and avoids the motor 505 shaking during use, which would lead to unstable operation of the motor 505.
[0030] The surface of the ventilation duct 1 is fixedly fitted with an installation ring 2, and the inner cavity of the installation ring 2 is provided with an installation hole. The installation ring 2 can facilitate the installation of the ventilation duct 1 on the load-bearing wall, thus avoiding the inconvenience of installing the ventilation duct 1 on the load-bearing wall.
[0031] The surface of the sealing disc 306 is fixedly connected to the sealing ring 307 by an adhesive, and the surface of the sealing ring 307 is in close contact with the sealing groove 6.
[0032] When using this utility model: the temperature sensor 4 senses the temperature inside the greenhouse. When the temperature sensor 4 detects that the temperature inside the greenhouse is too high, the external controller controls the sealing component 3 to operate. The sealing component 3 opens the ventilation channel inside the ventilation duct 1, and then natural wind ventilates the greenhouse through the ventilation duct 1. If it is necessary to enhance the ventilation efficiency inside the greenhouse, the cooling plate 504 operates, and then air enters the ventilation box 501 through the air intake 503. The cooling plate 504 cools the air inside the ventilation box 501. At this time, the motor 505 operates, and the motor 505 drives the fan blades 507 to operate. The fan blades 507 blow the cooled air towards the air outlet 502, and the air outlet 502 blows the cooled air into the greenhouse. In this way, the ventilation effect of the greenhouse is better, avoiding the situation where the ventilation device can only ventilate the greenhouse through natural wind, which leads to poor ventilation effect of the ventilation device.
[0033] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. An automatic ventilation and temperature control device for greenhouses, comprising a ventilation duct (1), characterized in that: A temperature sensor (4) is provided on the top right side of the ventilation duct (1). A sealing assembly (3) is provided in the inner cavity of the ventilation duct (1). Ventilation assemblies (5) are provided at the top and bottom of the inner cavity of the ventilation duct (1). The ventilation assembly (5) includes a ventilation box (501). The outer side of the ventilation box (501) is fixedly connected to the ventilation duct (1). An air intake (503) is provided on the left side of the ventilation box (501). An air outlet (502) is provided on the right side of the ventilation box (501). A cooling plate (504) is provided on the left side of the top and bottom of the inner cavity of the ventilation box (501). A motor (505) is provided on the right side of the inner cavity of the ventilation box (501). A fan blade (507) is provided at the output end of the motor (505).
2. The automatic ventilation and temperature control device for greenhouses according to claim 1, characterized in that: The sealing assembly (3) includes an electric push rod (301), which is located in the inner cavity of the ventilation duct (1). The output end of the electric push rod (301) is provided with a sealing plate (306). A sealing ring (307) is fixedly sleeved on the surface of the sealing plate (306). The inner cavity of the ventilation duct (1) is provided with a sealing groove (6) that matches the sealing ring (307). Both ends of the right side of the sealing plate (306) are provided with L plates (305). The right side of the L plates (305) is provided with a slide rod (304). Both ends of the right side of the inner cavity of the ventilation duct (1) are provided with movable holes (7) that match the slide rod (304). The left side of the slide rod (304) is provided with a limiting block (303).
3. The automatic ventilation and temperature control device for greenhouses according to claim 2, characterized in that: Both ends of the electric push rod (301) are fixedly connected to the fixing bracket (302) on both sides of the surface, and the outer side of the fixing bracket (302) is fixedly connected to the ventilation duct (1).
4. The automatic ventilation and temperature control device for greenhouses according to claim 1, characterized in that: The motor (505) is fixedly connected to a support frame (506) at both the top and bottom, and the outer side of the support frame (506) is fixedly connected to the ventilation box (501).
5. The automatic ventilation and temperature control device for greenhouses according to claim 1, characterized in that: The surface of the ventilation duct (1) is fixedly fitted with an installation ring (2), and the inner cavity of the installation ring (2) is provided with an installation hole.
6. The automatic ventilation and temperature control device for greenhouses according to claim 2, characterized in that: The surface of the sealing disc (306) is fixedly connected to the sealing ring (307) by an adhesive, and the surface of the sealing ring (307) is in close contact with the sealing groove (6).