CN206744061U - A kind of heater of greenhouse ventilating system - Google Patents

Abstract

The utility model discloses a heating device for a ventilation system in a greenhouse, which comprises an electric heating body, and is characterized in that the electric heating body includes an air passage, and an electric heating element is arranged inside the air passage, and the air passage The outer diameter is matched with the inner diameter of the channel so that the air passage tube can enter the passage as a whole, and the upper end of the air passage tube is fixedly connected to a horizontally arranged mounting plate, and the front and rear sides of the mounting plate are along the ventilation direction. The ends extend outwards from the wind tube and are respectively used to connect with the telescopic ends of a telescopic mechanism. The installation end of the telescopic mechanism is fixedly installed on the outer upper end of the passage, and the front and rear opening upper ends of the wind tube are respectively The folding cover is fixedly connected to the front and rear ends of the opening provided on the channel, and the vertical extension length of the folding cover is greater than the height of the air passage. The utility model can improve the working efficiency of the whole device for heating up the interior of the greenhouse and reduce the time required for heating up.

Description

A heating device for greenhouse ventilation system

technical field

The utility model relates to the technical field of greenhouse equipment, in particular to a heating device for a ventilation system of a greenhouse.

Background technique

A greenhouse is a facility that stores and converts solar energy and converts part of the sun's light energy into heat energy to meet the needs of crop growth. During the use of the greenhouse, it is also necessary to carry out proper ventilation according to the temperature change in the greenhouse, and adjust the temperature in the greenhouse to meet the best needs of different periods of crop growth, neither too high nor too low. If the temperature in the greenhouse is too low, the growth of the crops in the greenhouse will be inhibited, the growth and development will be delayed, and the effect of the plastic greenhouse on promoting early maturity and high yield of crops will be greatly reduced; no matter how low the temperature is, the crops in the greenhouse will suffer from freezing disasters, resulting in crop failure. Growth stagnates and yields are greatly reduced; lower temperatures can directly cause crop death. The harm of high temperature to crops should also not be underestimated. If the temperature exceeds the temperature limit required for crop growth, crop growth will also be inhibited; higher temperatures will also burn crop leaves, and extreme high temperatures will also cause crop death. At present, the temperature adjustment of greenhouses during the day mainly depends on the ventilation openings, but the ventilation conditions of ordinary greenhouses are poor. Generally, ventilation can only be done through the openings at both ends of the greenhouses. The air circulation is not good, resulting in the growth of plants in the greenhouses being hindered.

Chinese patent CN 205546738 U discloses a device for slowing down the temperature change of a vegetable greenhouse, which includes a greenhouse shell and a base, and the base is located at the bottom of the inner cavity of the greenhouse shell. The air vent is provided with a fan mounting frame, the fan mounting frame is provided with a first fan, the air vent is provided with a ventilation groove, the bottom of the ventilation groove is provided with a second fan, and the base is provided with A wire winder placement chamber, a wire winder is provided in the wire winder placement chamber, storage slots are provided on both sides of the base, a chute is provided on the inner wall of the storage slot, and a storage slot is provided in the base storage slot The second connecting plate, a sliding rod sleeve is interspersed in the second connecting plate, and a sliding rod is sleeved in the sliding rod sleeve, the two ends of the sliding rod are located in the slots of the chute, and the second connecting The side of the plate away from the storage slot is connected with a telescopic plate, and the telescopic plate is provided with a mounting opening, and a number of heating wires are arranged in the mounting port, and the side of the telescopic plate away from the second connecting plate is provided with a first connecting plate. A steel wire rope is connected to the first connecting plate, the steel wire rope is connected to the bottom of the storage tank, and a plurality of first lock holes are provided on one side of the base.

The above-mentioned device for slowing down the temperature change of the vegetable greenhouse can regulate the temperature in the greenhouse to a certain extent, but there are still the following defects: 1. When the temperature in the greenhouse needs to be raised, the heating wire needs to be heated, but the heating wire can only Heating part of the space around itself, the heat will not spread to the distance. If the greenhouse needs to be heated as a whole, multiple devices need to be installed, which will occupy the space in the greenhouse and cause waste of devices, and will also cause insufficient heat in the greenhouse. average, affecting crop growth. 2. When the temperature of the greenhouse needs to be raised, the expansion of the expansion plate will drive the heating wire to unfold synchronously, which takes up a lot of space and makes the space in the greenhouse that is not ample at first narrower. 3. The structure of the whole device is complicated, and installation and maintenance are inconvenient.

In order to solve the above problems, the applicant considers designing a greenhouse ventilation system, which is characterized in that it includes a channel for ventilation on the greenhouse, and the channel is provided with an air inlet device for entering the inside of the greenhouse, and also includes a The electric heating device arranged on the channel, the electric heating device has an electric heating body for electric heating, it is characterized in that an opening is provided on the channel corresponding to the electric heating device, and the electric heating device also includes an opening on one side of the opening A telescopic mechanism is provided on the channel, and the telescopic mechanism is connected with the electric heating body and can drive the electric heating body to enter and leave the passage through the opening.

In this way, when the temperature in the greenhouse is higher than the temperature required for crop growth, the air intake device can ventilate into the greenhouse to lower the temperature in the greenhouse. When the temperature in the greenhouse is lower than the temperature required for crop growth, the telescopic mechanism moves to make the electric heating body reach the inside of the passage, and the wind blown out by the air inlet device is heated by the electric heating body and then blows to the inside of the greenhouse. The temperature is more uniform.

However, since the passage is provided with an opening, the wind blown out by the air inlet device will flow out from the opening without being heated by the electric heating element, which will prolong the time required for heating up the interior of the greenhouse, resulting in a reduction in the working efficiency of the device. Therefore, how to adopt a simple structure to improve the efficiency of the device to raise the temperature inside the greenhouse and reduce the time required for temperature rise has become a problem to be considered and solved.

Utility model content

Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: how to provide a heating device for a greenhouse ventilation system that can better heat up the interior of the greenhouse, has high efficiency, takes a short time, and has a simple structure.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A heating device for a greenhouse ventilation system, comprising an electric heating body, characterized in that the electric heating body includes an air passage, the air passage is arranged along the ventilation direction of the channel for ventilation in the greenhouse and is equipped with an electric heating element inside The element, the channel is arranged horizontally and the upper end is provided with an opening corresponding to the air passage, and the outer diameter of the air passage matches the inner diameter of the passage so that the air passage can enter the passage as a whole through the opening; The upper end of the blower tube is fixedly connected to a horizontally arranged mounting plate, and the front and rear ends of the mounting plate along the ventilation direction extend out of the blower tube and are respectively used to connect with the telescopic end of a telescopic mechanism. The telescoping mechanism is arranged vertically and the installation end is fixedly installed on the outer surface end on one side of the passage opening.

In this technical solution, the channel is set horizontally, the opening is set at the upper end of the channel, the telescopic mechanism is set on the outer upper surface of the channel opening side and the telescopic end is set upward and connected with the electric heating body, when the telescopic mechanism moves, it can drive the electric heating body to rise or fall , when the electric heating body is in the common heating state in the channel, the telescopic mechanism is in the state of retracting and not doing work. In this way, more electric energy can be saved, and the service life of the telescopic mechanism can also be prolonged.

As an optimization, the cross-section of the air passage is rectangular, and the upper ends of the front and rear openings of the air passage are respectively fixedly connected to the front and rear ends of the opening provided on the passage through the folding cover.

In this way, the folding cover is used to fixedly connect the upper end of the fan cylinder in the front and rear direction with the front and rear ends of the opening, so as to prevent the wind inside the passage from flowing out through the opening, so that the electric heater can better heat the wind inside the passage and increase the air flow inside the greenhouse. The temperature rising speed reduces the time required for the greenhouse to heat up, improves the efficiency of the whole device, and has a simple structure and low cost. The cross-section of the blower tube is rectangular, which is convenient for processing and also convenient for the connection and installation of the folding cover and the blower tube.

As an optimization, the telescopic mechanism is set as an electric push rod.

In this way, the electric push rod can better drive the mounting plate to move up and down. When the mounting plate reaches a suitable position, the electric push rod does not need to be powered again, which can better save electric energy and is more convenient to operate.

As an optimization, the vertical extension length of the folding cover is greater than or equal to the overall length of the electric push rod when it is in a fully extended state.

In this way, it is possible to avoid damage to the folding cover caused by the extended length of the electric push rod, and prolong the service life of the folding cover.

As an optimization, the folding cover is made of plastic material.

In this way, the folding cover is made of plastic material, which can better reduce the weight of the whole device and reduce the cost of the whole device.

As an optimization, the electric heating element is an electric heating network, and the electric heating network is vertically arranged in the air passage and located on the entire cross section of the air passage.

In this way, the electric heating element is set as an electric heating network, which has little resistance to the wind, and can realize wind heating while allowing the wind to pass through the air duct better. The electric heating network has a simple structure and low price, which can reduce the cost of the entire device. The electric heating net is vertically arranged in the air passage and is located on the entire cross section of the air passage, which can make the heating of the wind by the electric heating net more uniform and have a better effect.

As an optimization, the electric heating network is arranged in parallel at a horizontal interval.

In this way, a multi-layer electric heating network is provided, which can better heat the wind blown out by the air inlet device layer by layer, ensure the heating effect of the wind, improve the temperature rise efficiency inside the greenhouse, and reduce the time required for temperature rise.

As an optimization, a storage battery is also fixedly arranged on the installation board, and the storage battery is connected to the electric heating element for power supply.

In this way, the storage battery is provided, and compared with the direct connection with electric wires, the whole device can be made more independent, and can be used independently in any occasion where temperature needs to be raised, and the application range is wider.

To sum up, the utility model can improve the working efficiency of the whole device for heating the interior of the greenhouse and reduce the time required for heating.

Description of drawings

Fig. 1 is a structural schematic diagram of a greenhouse ventilation system adopting the structure of the utility model.

detailed description

Below in conjunction with a greenhouse ventilation system that has adopted the structure of the utility model, and the accompanying drawings, the utility model is further described in detail.

During specific implementation: as shown in Figure 1, a greenhouse ventilation system includes a ventilation passage 1 arranged on the greenhouse, and the passage 1 is provided with an air intake device for entering the wind into the interior of the greenhouse, and also includes a set Electrothermal device on channel 1.

The electric heating device, namely the heating device of the present utility model, includes an electric heating body, and the electric heating body includes an air passage 2, and the air passage 2 is arranged along the ventilation direction of the channel 1 for ventilation of the greenhouse and is internally arranged There is an electric heating element 3, the channel 1 is arranged horizontally and the upper end is provided with an opening corresponding to the air passage 2, and the outer diameter of the air passage 2 matches the inner diameter of the passage 1 so that the air passage 2 can pass through the opening The whole enters into the channel 1.

In this way, the electric heating body is provided with an air passage, and the air passage is arranged along the ventilation direction of the channel and the electric heating element is arranged inside, so that the electric heating element can be better installed. When the electric heating body is inside the channel, the air flow blown out by the air inlet device passes through the inside of the air duct, so that the wind is heated by the electric heating element inside the air duct, and then enters the greenhouse, which can increase the temperature in the greenhouse, and can also turn the heated The wind diffuses, making the temperature in the greenhouse closer to the same and more uniform. The matching of the outer diameter of the air duct and the inner diameter of the channel enables the air duct to enter the channel as a whole, and enables all the wind blown by the air inlet device to pass through the air duct, which can make more wind heated per unit time and improve the heating efficiency , At the same time, it can avoid the waste of wind and shorten the heating time inside the greenhouse.

In this specific embodiment, the upper end of the air passing tube 2 is fixedly connected to a horizontally arranged mounting plate 5, and the front and rear ends of the mounting plate 5 extend outwards from the air passing tube 2 along the ventilation direction and are respectively used It is connected with the telescopic end of a telescopic mechanism 6, the telescopic mechanism 6 is vertically arranged and the installation end is fixedly installed on the outer surface end of the opening side of the passage 1.

In this way, the passage is arranged horizontally, the opening is arranged at the upper end of the passage, the telescopic mechanism is arranged on the outer upper surface of one side of the passage opening and the telescopic end is arranged upwards and connected with the electric heating body, when the telescopic mechanism moves, it can drive the electric heating body to rise or fall, and the electric heating body When it is in the common heating state in the channel, the telescopic mechanism is in the state of retracting and not doing work. In this way, more electric energy can be saved, and the service life of the telescopic mechanism can also be prolonged.

In this specific embodiment, the section of the air passage 2 is rectangular, and the upper ends of the front and rear openings of the air passage 2 are respectively fixedly connected to the front and rear ends of the opening provided on the channel 1 through the folding cover 21 .

In this way, the folding cover is used to fixedly connect the upper end of the fan cylinder in the front and rear direction with the front and rear ends of the opening, so as to prevent the wind inside the passage from flowing out through the opening, so that the electric heater can better heat the wind inside the passage and increase the air flow inside the greenhouse. The temperature rising speed reduces the time required for the greenhouse to heat up, improves the efficiency of the whole device, and has a simple structure and low cost. The cross-section of the blower tube is rectangular, which is convenient for processing and also convenient for the connection and installation of the folding cover and the blower tube.

In this specific embodiment, the telescopic mechanism 6 is configured as an electric push rod.

In this way, the electric push rod can better drive the mounting plate to move up and down. When the mounting plate reaches a suitable position, the electric push rod does not need to be powered again, which can better save electric energy and is more convenient to operate. Of course, during specific implementation, the telescoping mechanism may adopt a hydraulic cylinder, which also belongs to the implementable range of the device.

In this specific embodiment, the vertical extension length of the folding cover 21 is greater than or equal to the overall length of the electric push rod 6 when it is in a fully extended state.

In this way, it is possible to avoid damage to the folding cover caused by the extended length of the electric push rod, and prolong the service life of the folding cover.

In this specific embodiment, the folding cover 21 is made of plastic material.

In this way, the folding cover is made of plastic material, which can better reduce the weight of the whole device and reduce the cost of the whole device. Of course, in practical implementation, the folding cover can be made of aluminum film, which also belongs to the implementable range of the device.

In this specific embodiment, the electric heating element 3 is an electric heating network vertically arranged in the air passage 2 and located on the entire cross section of the air passage 2 .

In this way, the electric heating element is set as an electric heating network, which has little resistance to the wind, and can realize wind heating while allowing the wind to pass through the air duct better. The electric heating network has a simple structure and low price, which can reduce the cost of the entire device. The electric heating net is vertically arranged in the air passage and is located on the entire cross section of the air passage, which can make the heating of the wind by the electric heating net more uniform and have a better effect. Of course, during specific implementation, the electric heating element can be set as an electric heating coil, which also belongs to the implementable scope of the device.

In this specific implementation manner, the electric heating network is arranged in parallel at horizontal intervals.

In this way, a multi-layer electric heating network is provided, which can better heat the wind blown out by the air inlet device layer by layer, ensure the heating effect of the wind, improve the temperature rise efficiency inside the greenhouse, and reduce the time required for temperature rise. Of course, during specific implementation, one, two or even multiple electric heating networks can be provided, all of which belong to the implementable range of the device.

In this specific embodiment, a storage battery 4 is fixedly arranged on the installation plate 5, and the storage battery 4 is connected to the electric heating element 3 to supply power.

In this way, the storage battery is provided, and compared with the direct connection with electric wires, the whole device can be made more independent, and can be used independently in any occasion where temperature needs to be raised, and the application range is wider. Of course, during specific implementation, the storage battery can be set as a power source, which also belongs to the implementable range of the device.

In this specific embodiment, the air inlet device is a ventilator 7 installed in the channel 1 and capable of blowing air to the inside of the air cylinder 2, and an A dust filter 11, the dust filter 11 is vertically arranged in the channel 1 and located on the entire cross section of the channel 1.

In this way, the air inlet device is a ventilator installed in the passage and capable of blowing air to the inside of the air duct. The temperature inside the greenhouse is higher than the outside temperature, so that the air pressure in the greenhouse is lower than the outside air pressure, so the outside air can enter under the action of atmospheric pressure. In the greenhouse, the use of ventilators can better replace the gas in the greenhouse, increase the gas flow rate, blow the outside air into the greenhouse, cool down the inside of the greenhouse or heat it up through electric heating elements. A dust filter is installed to prevent dust from entering the air duct and adhering to the heating element, which will affect the heating effect. Of course, during specific implementation, the air inlet device can be set as a ventilation fan, a blower fan, etc., all of which belong to the implementable range of the device.

In this specific embodiment, the side of the ventilator 7 away from the dust filter 11 is provided with a louver 12 that can be opened or closed, and the louver 12 is vertically arranged in the passage 1 and is located on the entire passage 1. section.

In this way, a louver is arranged on the side of the ventilator away from the dust filter net, on the one hand to prevent dust from entering the passage, and on the other hand, to prevent rainwater, external foreign objects or birds from entering the passage.

In this specific embodiment, one end of the channel 1 where the fan 7 is installed is also equipped with a trumpet-shaped air collecting tube 13, and the said air collecting tube 13 has an end diameter larger than the cross-sectional diameter of the channel 1. The windward opening also has an air outlet whose end diameter matches the cross-sectional diameter of the channel 1, and one end of the air collector 13 provided with an air outlet is fixedly connected to the end of the channel 1.

In this way, a trumpet-shaped air gathering tube is installed at one end of the channel where the fan is installed. When the tube is on, the air flow speed near the air collector will increase, which will increase the air volume entering the channel, and then improve the efficiency of the whole device to enter the greenhouse. A trumpet-shaped air collector is provided, which can further prevent rainwater from entering and prolong the service life of the entire device.

In this specific embodiment, one end of the channel 1 that is not provided with the air gathering tube 13 is connected with a ventilation pipe 8, one end of the ventilation pipe 8 is fixedly connected to the end of the channel 1, and the other end is away from the channel 1. direction extension. Of course, during specific implementation, the ventilation pipe can be set as a hose, which also belongs to the implementable scope of the device.

In this way, a ventilation pipe is connected to one end of the channel where the air collecting tube is not arranged, and the unfixed end of the ventilation pipe can be arranged in the greenhouse, and the whole device can be arranged at any position, and the installation location can be selected according to the terrain to improve the safety of the whole device. adaptability.

Claims (8)

1. a kind of heater of greenhouse ventilating system, including an electric heating element, it is characterised in that the electric heating element includes one Cross air duct（2）, it is described to cross air duct（2）The passage for being used to divulge information along greenhouse（1）Direction of ventilation set and be internally provided with electricity plus Thermal element（3）, the passage（1）Horizontally disposed and upper end corresponded to air duct（2）Opening is provided with, it is described to cross air duct（2）External diameter With the passage（1）Internal diameter matches so that described cross air duct（2）The passage can be entered by the way that the opening is overall（1） It is interior；It is described to cross air duct（2）Upper end is fixedly connected on a horizontally disposed installing plate（5）On, the installing plate（5）Along ventilation side To rear and front end extend outward it is described cross air duct（2）And respectively for a telescoping mechanism（6）Telescopic end connection, institute State telescoping mechanism（6）Vertically arranged and installation end is fixedly mounted on the passage（1）The outer surface upper end of opening side.

2. the heater of greenhouse ventilating system as claimed in claim 1, it is characterised in that described to cross air duct（2）Section is Rectangle and the air duct excessively（2）Front and rear open upper end passes through Collapsible cover respectively（21）With the passage（1）The opening of upper setting Rear and front end is fixedly connected.

3. the heater of greenhouse ventilating system as claimed in claim 2, it is characterised in that the telescoping mechanism（6）Set For electric pushrod.

4. the heater of greenhouse ventilating system as claimed in claim 3, it is characterised in that the Collapsible cover（21）Vertically stretch Length degree is more than or equal to the overall length when electric pushrod is in the fully extended state.

5. the heater of greenhouse ventilating system as claimed in claim 4, it is characterised in that the Collapsible cover（21）Using modeling Material material is made.

6. the heater of greenhouse ventilating system as claimed in claim 1, it is characterised in that the electrical heating elements（3）For Electric network, the electric network are vertically provided at the air duct excessively（2）It is interior and positioned at it is described cross air duct（2）On whole cross section.

7. the heater of greenhouse ventilating system as claimed in claim 6, it is characterised in that the electric network is horizontal interval What is be set up in parallel is multiple.

8. the heater of greenhouse ventilating system as claimed in claim 6, it is characterised in that the installing plate（5）On it is also solid Surely it is provided with battery（4）, the battery（4）With the electrical heating elements（3）Be connected power supply.