Greenhouse ventilation circulation equipment

Abstract

A greenhouse ventilation circulation device comprises a ventilation circulation unit and a supporting unit. The number of the ventilation circulation units is multiple, each ventilation circulation unit comprises a serial pipe, one end of the lowest straight pipe is connected with a bent pipe which is bent, separation films are arranged in the serial pipe and the bent pipe, one end of the uppermost straight pipe is provided with a first draught fan and a third draught fan, and the lower end of the bent pipe is provided with a second draught fan and a fourth draught fan. The first draught fan sucks external air into the greenhouse, the sucked air sequentially passes through the serial pipe and the bent pipe from one side of the separation film and is exhausted into the greenhouse from the second draught fan, meanwhile, the fourth draught fan sucks air in the greenhouse upwards, and the sucked air sequentially passes through the bent pipe and the serial pipe from the other side of the separation film and is exhausted out of the greenhouse from the third draught fan. The supporting unit is arranged in the greenhouse and used for fixing all the ventilation circulation units. According to the greenhouse ventilation circulation equipment, the temperature reduction amplitude in the greenhouse during ventilation circulation can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of greenhouses, in particular to ventilation and circulation equipment for greenhouses. Background Art

[0002] Ventilation circulation in greenhouses can regulate temperature, control humidity, replenish carbon dioxide, promote air flow, create a suitable growth environment for crops, and help improve yield and quality.

[0003] However, the greenhouse itself has an insulation effect, and this is also one of the main purposes of building a greenhouse and planting crops in it. Normally, the temperature inside the greenhouse is higher than the outside temperature. When the ventilation windows are opened for ventilation, cold air will be allowed into the greenhouse, causing the internal temperature to drop sharply, which is not conducive to the growth of crops. Utility Model Content

[0004] In view of the above-mentioned defects, the utility model provides a greenhouse ventilation circulation device, which can reduce the temperature drop in the greenhouse during ventilation circulation.

[0005] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0006] A greenhouse ventilation and circulation device, comprising:

[0007] Multiple ventilation circulation units, each comprising a series of pipes, each of which comprises n vertically arranged and serially connected straight pipes and (n-1) U-shaped pipes connected between adjacent straight pipes, one end of the lowest straight pipe being connected to a curved pipe, a partition membrane being provided in each of the series of pipes and the curved pipes, one end of the highest straight pipe being provided with a first fan and a third fan, and a lower end of the curved pipe being provided with a second fan and a fourth fan, when in operation, the first fan draws external air into the greenhouse, the drawn air passes through the series of pipes and the curved pipe in sequence from one side of the dividing membrane, and is discharged to the interior of the greenhouse from the second fan, while the fourth fan draws the air in the greenhouse upward, the drawn air passes through the curved pipe and the series of pipes in sequence from the other side of the dividing membrane, and is discharged to the outside of the greenhouse from the third fan;

[0008] The supporting unit is arranged in the greenhouse and is used to fix each ventilation circulation unit.

[0009] Furthermore, the cross sections of the string pipe and the bent pipe are both waist-shaped.

[0010] Furthermore, a pair of first fixing seats are provided at one end of the uppermost straight pipe, the first fan is provided at the outside of one first fixing seat, and the third fan is provided at the outside of the other first fixing seat.

[0011] Furthermore, a pair of second fixing seats are provided at the lower end of the bent pipe, the second fan is provided at the lower end of one second fixing seat, and the fourth fan is provided at the lower end of another second fixing seat.

[0012] Furthermore, the support unit includes a U-shaped frame which is respectively mounted on the outside of the string pipes of each ventilation circulation unit, the inner top wall of the U-shaped frame abuts the upper end of the outer peripheral side of the straight pipe at the top of the string pipe, and the inner bottom wall of the U-shaped frame abuts the lower end of the outer peripheral side of the straight pipe at the bottom of the string pipe. The two outer side surfaces of the U-shaped frame are respectively provided with horizontal plates fixedly connected to each U-shaped frame extending along the axis direction of the straight pipe, and connecting plates are provided between the two oppositely arranged horizontal plates. The outer side surfaces of the horizontal plates located at both ends of the support unit are also provided with inverted L-shaped frames.

[0013] The beneficial effects of this technical solution are:

[0014] When the greenhouse ventilation circulation equipment of the present application is used for ventilation, the incoming air can first pass through the string pipe and then enter the space above the crops. The string pipe is set with a longer path, and the incoming air can exchange heat with the extracted air with a higher temperature and increase the temperature, thereby reducing the degree of temperature drop in the greenhouse during ventilation circulation, which is beneficial to the growth of crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is an overall stereoscopic view of an embodiment of the present application.

[0016] Figure 2 A three-dimensional diagram of a ventilation circulation unit according to an embodiment of the present application is shown.

[0017] Figure 3 An exploded view of a ventilation circulation unit according to an embodiment of the present application is shown.

[0018] Figure 4 A three-dimensional diagram of an embodiment of the present application in a greenhouse is shown. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the embodiments described are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of the present application.

[0020] like Figures 1 to 4 The ventilation and circulation equipment for a greenhouse shown includes a ventilation and circulation unit 1 and a support unit 2.

[0021] There are multiple ventilation circulation units 1, and the ventilation circulation unit 1 includes a string pipe 11. The string pipe 11 includes n straight pipes arranged vertically and connected in series in sequence and (n-1) U-shaped pipes connected between adjacent straight pipes. One end of the lowest straight pipe is connected to a curved pipe 12 that bends in a certain direction. The cross-sections of the string pipe 11 and the curved pipe 12 are both waist-shaped. A partition membrane 13 is provided in the string pipe 11 and the curved pipe 12. The partition membrane 13 divides the interior of the string pipe 11 into two, and the partition membrane 13 also divides the interior of the curved pipe 12 into two. The thickness of the partition membrane 13 is less than 10% of the thickness of the string pipe 11. The thickness of the string pipe 11 and the curved pipe 12 is the same. Preferably, the string pipe 11 and the curved pipe 12 are made of stainless steel for heat insulation, and the partition membrane 13 is made of plastic film for heat exchange on both sides of the partition membrane 13. A pair of first fixing seats 14 are provided at one end of the top straight pipe, a pair of second fixing seats 15 are provided at the lower end of the bent pipe 12, a first fan 16 is provided on the outside of one first fixing seat 14, a second fan 17 is provided at the lower end of one second fixing seat 15, a third fan 18 is provided on the outside of another first fixing seat 14, and a fourth fan 19 is provided at the lower end of another second fixing seat 15. When working, the first fan 16 draws external air into the greenhouse 3, and the drawn air passes through the string pipe 11 and the bent pipe 12 in sequence from one side of the partition membrane 13, and is discharged to the inside of the greenhouse 3 from the second fan 17. At the same time, the fourth fan 19 draws the air in the greenhouse 3 upward, and the drawn air passes through the bent pipe 12 and the string pipe 11 in sequence from the other side of the partition membrane 13, and is discharged to the outside of the greenhouse 3 from the third fan 18. Figure 4 As shown, the outer ends of the first fan 16 and the fourth fan 19 are both arranged outside the side wall of the greenhouse 3.

[0022] The support unit 2 is arranged in the greenhouse 3 and is used to fix each ventilation circulation unit 1. It includes a circular frame 21 respectively sleeved on the outside of the string pipe 11 of each ventilation circulation unit 1, the inner top wall of the circular frame 21 abuts against the upper end of the outer peripheral side of the straight tube at the top of the string pipe 11, and the inner bottom wall of the circular frame 21 abuts against the lower end of the outer peripheral side of the straight tube at the bottom of the string pipe 11. The two outer side surfaces of the circular frame 21 are respectively provided with horizontal plates 22 that are fixedly connected to each circular frame 21 extending along the axis direction of the straight tube. A connecting plate 23 is provided between the two oppositely arranged horizontal plates 22, and an inverted L-shaped frame 24 is also provided on the outer side surfaces of the horizontal plates 22 located at both ends of the support unit 2.

[0023] In this embodiment, the first fan 16 , the second fan 17 , the third fan 18 , and the fourth fan 19 are all axial flow fans.

[0024] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A greenhouse ventilation and circulation equipment, characterized in that: include: A plurality of ventilation circulation units (1), the ventilation circulation unit (1) includes a series pipe (11), the series pipe (11) includes n straight pipes arranged vertically and connected in series in sequence and (n-1) U-shaped pipes connected between adjacent straight pipes, one end of the lowest straight pipe is connected to a curved pipe (12) that bends in a certain direction, a separation membrane (13) is provided in the series pipe (11) and the curved pipe (12), one end of the highest straight pipe is provided with a first fan (16) and a third fan (18), and the lower end of the curved pipe (12) is provided with a second fan (17) and a third fan (18). The four fans (19) are operated. When the first fan (16) draws external air into the greenhouse (3), the drawn air passes through the string pipe (11) and the elbow pipe (12) from one side of the partition membrane (13) in sequence, and is discharged from the second fan (17) to the inside of the greenhouse (3). At the same time, the fourth fan (19) draws the air in the greenhouse (3) upward, and the drawn air passes through the elbow pipe (12) and the string pipe (11) from the other side of the partition membrane (13) in sequence, and is discharged from the third fan (18) to the outside of the greenhouse (3); The support unit (2) is arranged in the greenhouse (3) and is used to fix each ventilation circulation unit (1).

2. The greenhouse ventilation and circulation equipment according to claim 1, characterized in that: The cross sections of the string pipe (11) and the bent pipe (12) are both waist-shaped.

3. The greenhouse ventilation and circulation equipment according to claim 1, characterized in that: A pair of first fixing seats (14) are provided at one end of the uppermost straight pipe, a first fan (16) is provided outside one first fixing seat (14), and a third fan (18) is provided outside another first fixing seat (14).

4. The greenhouse ventilation and circulation equipment according to claim 1, characterized in that: A pair of second fixing seats (15) are provided at the lower end of the curved pipe (12), a second fan (17) is provided at the lower end of one second fixing seat (15), and a fourth fan (19) is provided at the lower end of the other second fixing seat (15).

5. The greenhouse ventilation and circulation equipment according to claim 1, characterized in that: The support unit (2) includes a circular frame (21) which is respectively sleeved on the outer side of the string pipe (11) of each ventilation circulation unit (1), the inner top wall of the circular frame (21) is in contact with the upper end of the outer peripheral side of the straight pipe at the top of the string pipe (11), and the inner bottom wall of the circular frame (21) is in contact with the lower end of the outer peripheral side of the straight pipe at the bottom of the string pipe (11). The two outer side surfaces of the circular frame (21) are respectively provided with a horizontal plate (22) fixedly connected to each circular frame (21) extending along the axis direction of the straight pipe, and a connecting plate (23) is provided between the two oppositely arranged horizontal plates (22). The outer side surfaces of the horizontal plates (22) at both ends of the support unit (2) are also provided with an inverted L-shaped frame (24).

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