Temperature increasing and air supplying device for facility shed and combined structure of temperature increasing and air supplying device

Abstract

The utility model discloses a facility shed temperature increasing and air supplying device and a combined structure thereof, and relates to the technical field of facility shed temperature increasing and air supplying, the temperature increasing and air supplying device is arranged between two adjacent ridges of planted crops in a facility shed, and the temperature increasing and air supplying device comprises a base, an air inlet is formed in the side wall of the base; air outlets are formed in the top of the base; the connecting pipe is axially and vertically fixed on the top end surface of the base; the top end of the connecting pipe is closed, and the bottom end pipe orifice is correspondingly communicated with the air outlet; the bottom of the vertical annular air supply pipe is fixed and communicated with the side wall of the connecting pipe; exhaust holes are formed in the outer wall of the vertical annular air supply pipe in the axial direction and the radial direction of the vertical annular air supply pipe; the annular heating pipe is arranged in the vertical annular air supply pipe, and the annular heating pipe and the vertical annular air supply pipe are coaxially arranged; the fan is arranged in the cavity, and an air outlet pipe of the fan is communicated with the air outlet. The temperature and humidity distribution uniformity in the facility shed can be improved, arrangement is convenient, and air supply and temperature control are flexible and adjustable.

Description

Technical Field

[0001] The utility model relates to the technical field of heating and air supply for facility sheds, in particular to a heating and air supply device for facility sheds and a combined structure thereof. Background Art

[0002] Greenhouses are an important modern agricultural measure. They are also a complex ecosystem, so they require a suitable crop environment to adapt to their growth. Especially in cold weather, conventional greenhouses are long, and solar radiation is unevenly distributed in the morning and evening, which causes uneven heat distribution in the greenhouse, resulting in obvious differences in temperature and humidity in the fruit and vegetable growing areas, thus affecting the quality of their growth. Therefore, reasonable temperature control in greenhouses is an important measure to ensure the growth of fruits and vegetables in the greenhouse and reduce the occurrence of diseases.

[0003] The Chinese patent (authorization announcement number CN 212013824 U, authorization announcement date 2020.11.27) discloses a greenhouse uniform heating and air supply device, which specifically discloses that the air supply duct of the device is located above the inside of the greenhouse, and the heat carried by the hot air flows out through the air outlet on the air supply device, and the air supply duct is rotated under the drive of the motor, which can evenly distribute the heat generated by the hot air into the greenhouse, thereby improving the uniformity of heat distribution in the greenhouse. It can be seen that its technical solution has achieved the uniformity of hot air supply along the length direction of the greenhouse to a certain extent; however, its air supply duct is located at the top of the greenhouse. Since hot air will rise, and the crops planted are generally close to the ground of the greenhouse, its technical solution has the technical defect of being difficult to regulate the temperature difference between the upper and lower parts of the greenhouse; and for taller crops planted in ridges, its technical solution of arranging air supply ducts at the top of the greenhouse also has the problem of being unable to deliver hot air to the area between the ridges.

[0004] Therefore, how to provide a facility shed heating and air supply device and its combined structure that can be suitable for heating and air supply in facility sheds where crops are planted in ridges, can improve the uniformity of temperature and humidity distribution in the facility shed, and has the characteristics of easy layout, flexible and adjustable air supply and temperature control is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of this, the utility model proposes a facility shed heating and air supply device and its combined structure, aiming to solve the above technical problems. The utility model can be applied to the heating and air supply of facility sheds for planting crops in ridges, can improve the uniformity of temperature and humidity distribution in the facility shed, and has the advantages of easy layout, flexible and adjustable air supply and temperature control.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In one aspect, the utility model provides a facility shed temperature increasing and air supplying device, which is arranged between two adjacent ridges of planted crops in the facility shed, and comprises:

[0008] A base, wherein the base has a cavity inside; an air inlet is provided on a side wall of the base; and an air outlet is provided on the top of the base;

[0009] A connecting pipe, the connecting pipe is axially and vertically fixed to the top surface of the base; the top of the connecting pipe is closed, and the bottom end of the connecting pipe is correspondingly connected to the air outlet;

[0010] A vertical annular air supply pipe, wherein the bottom of the vertical annular air supply pipe is fixed to and communicated with the side wall of the connecting pipe; the outer wall of the vertical annular air supply pipe is provided with exhaust holes along its axial direction and radial direction to supply air along the length direction of the ridge and the direction of crops planted on both sides;

[0011] An annular heating pipe, wherein the annular heating pipe is arranged inside the vertical annular air supply pipe and the two are coaxially arranged;

[0012] A fan is arranged in the cavity, and an air outlet pipe of the fan is connected with the air outlet to blow air into the connecting pipe and the vertical annular air supply pipe.

[0013] Through the above technical scheme, it can be known that compared with the prior art, the utility model discloses a facility shed heating and air supply device. When in use, the device is placed on the ground and arranged between two adjacent ridges of crops planted in the facility shed. The annular heating pipe heats the air inside the vertical annular air supply pipe, and the fan is used to blow air into the connecting pipe. The airflow will enter the vertical annular air supply pipe through the connecting pipe. The outer wall of the vertical annular air supply pipe is provided with exhaust holes in the axial and radial directions, so that the hot air will be blown out from the radial and axial directions of the vertical annular air supply pipe, so as to realize the three-dimensional hot air or natural wind supply from the bottom of the facility shed to the surrounding areas; when the axial direction of the annular structure of the vertical annular air supply pipe is consistent with the direction of the ridge, the hot air can be accelerated to circulate in the area between the crops planted on the two ridges, and the hot air can cover the crop planting areas on both sides of the device, so that the temperature and humidity in the facility shed can be uniform more quickly; the utility model device can turn on the air supply or heating function separately, and can also turn on the air supply and heating at the same time, which can be beneficial to the regulation of temperature and humidity in the facility shed, and effectively solve the problem of uneven temperature and humidity in different areas of the facility shed.

[0014] As a further improvement of the above technical solution, the connecting pipe includes a first pipe opening, a second pipe opening and a third pipe opening;

[0015] The first pipe opening is located at the bottom end of the connecting pipe and is connected to the air outlet; the second pipe opening and the third pipe opening are both located on the side wall of the connecting pipe and are symmetrically arranged along the axis of the connecting pipe.

[0016] The bottom of the vertical annular air supply pipe has a break to form a first interface and a second interface of the vertical annular air supply pipe, the first interface is connected and fixed to the second pipe opening, and the second interface is connected and fixed to the third pipe opening;

[0017] The bottom of the annular heating pipe is inserted into the second pipe opening and the third pipe opening.

[0018] As a further improvement of the above technical solution, the outer wall of the vertical annular air supply pipe is provided with axial exhaust holes and radial exhaust holes;

[0019] The axial exhaust hole is located on the inner side wall of the annular structure of the vertical annular air supply pipe, and extends from the first interface to the second interface along the annular direction of the vertical annular air supply pipe in an arc-shaped structure, and supplies air axially to the annular structure of the vertical annular air supply pipe;

[0020] The radial exhaust hole is located on the outer side wall of the annular structure of the vertical annular air supply pipe, and extends in an arc shape from the first interface to the second interface along the annular direction of the vertical annular air supply pipe, and supplies air radially to the annular structure of the vertical annular air supply pipe.

[0021] The axial exhaust holes and the radial exhaust holes extend in an arc-shaped structure from the first interface to the second interface along the vertical annular air supply pipe, thereby increasing the air supply range and area and achieving a better three-dimensional air supply effect.

[0022] As a further improvement of the above technical solution, it also includes a fixed bracket; one end of the fixed bracket is fixed to the annular heating pipe, and the other end is fixed to the inner wall of the vertical annular air supply pipe, so as to fix and support the annular heating pipe and space the annular heating pipe and the inner wall of the vertical annular air supply pipe from each other.

[0023] The fixed bracket plays the role of fixing and supporting the annular heating pipe to prevent the annular heating pipe from contacting the inner wall of the vertical annular air supply pipe and causing scalding.

[0024] As a further improvement of the above technical solution, there are multiple fixed brackets, and the multiple fixed brackets are arranged at intervals in the circumferential direction along the vertical annular air supply pipe.

[0025] As a further improvement of the above technical solution, connecting blocks are provided between the inner walls opposite to the axial exhaust holes and between the inner walls opposite to the radial exhaust holes, and both ends of the connecting blocks are fixedly connected to the corresponding inner walls of the axial exhaust holes and the radial exhaust holes.

[0026] The connecting block plays a role in reinforcing the vertical annular air supply duct, so that the vertical annular air supply duct has a stable structure to prevent deformation.

[0027] As a further improvement of the above technical solution, the fan is a centrifugal fan.

[0028] As a further improvement of the above technical solution, a rotating disk is hinged to the bottom of the base through a rotating shaft, and a counterweight block is embedded in the bottom of the rotating disk.

[0029] Another aspect of the utility model provides a combined structure of a heating and air supply device for a facility shed, comprising two or more of the above-mentioned heating and air supply devices for a facility shed; the two or more heating and air supply devices are arranged between two adjacent ridges of crops planted in the facility shed, and are spaced apart along the length direction of the ridge; the air supply direction of the axial exhaust holes of the two or more heating and air supply devices is arranged along the length direction of the ridge.

[0030] Two or more of the above-mentioned heating and air supply devices are used in combination and are arranged at intervals along the length direction of the ridge. They can be suitable for heating and air supply of facility sheds of any size, and can quickly achieve uniform temperature and humidity in the facility shed. During specific use, the heating and air supply functions can be controlled separately as needed, that is, when the temperature meets the requirements, only the air supply function is turned on for air circulation to improve the uniformity of humidity distribution in the facility shed.

[0031] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses a facility shed heating and air supply device and a combined structure thereof, which has the following advantages and beneficial effects:

[0032] 1. The utility model can realize the three-dimensional supply of hot air or natural air from the bottom of the facility shed to the surrounding areas. The air supply covers a wide range and is conducive to the crop planting area at the bottom of the facility shed to be exposed to suitable hot air.

[0033] 2. The utility model can be applied to heating and air supply of facility sheds of any size through the combined use of heating and air supply devices, can realize the circulation of air in the facility shed, and improve the uniformity of temperature and humidity in the facility shed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the overall structure of a heating and air supply device for a facility shed according to the utility model;

[0036] Figure 2 A schematic diagram of the structure of a base and an annular heating pipe of a facility shed heating and air supply device according to the utility model;

[0037] Figure 3 A schematic diagram of the structure of a vertical annular air supply pipe of a facility shed heating and air supply device according to the utility model;

[0038] Figure 4 A schematic cross-sectional view of a vertical annular air supply pipe of a facility shed heating and air supply device according to the utility model;

[0039] Figure 5 A schematic diagram of a connecting pipe of a heating and air supply device for a facility shed according to the utility model;

[0040] Figure 6 A schematic diagram of a rotating disk of a heating and air supply device for a facility shed according to the utility model;

[0041] Figure 7 A three-dimensional schematic diagram of a base of a heating and air supply device for a facility shed according to the utility model;

[0042] In the figure: 1. base; 11. cavity; 12. air inlet; 13. air outlet; 14. rotating disk; 141. counterweight; 142. rotating shaft; 2. connecting pipe; 21. first pipe opening; 22. second pipe opening; 23. third pipe opening; 3. vertical annular air supply duct; 31. first interface; 32. second interface; 33. axial exhaust hole; 34. radial exhaust hole; 35. connecting block; 4. annular heating pipe; 5. fan; 51. air outlet duct; 6. fixing bracket; 61. fixing clamp; 62. fixing rod. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] like Figures 1 to 7 As shown, a heating and air supply device for a facility shed is arranged between two adjacent ridges of planted crops in the facility shed, and the heating and air supply device comprises:

[0048] The base 1 is a cubic box, and has a cavity 11 inside. The side wall of the base 1 has a plurality of air inlets 12. The top of the base 1 has an air outlet 13.

[0049] The connecting pipe 2 is axially and vertically fixed on the top surface of the base 1; the top of the connecting pipe 2 is closed, and the bottom end of the connecting pipe 2 corresponds to the position of the air outlet 13 and is connected to the air outlet 13;

[0050] A vertical annular air supply pipe 3, the bottom of which is fixed to and communicated with the side wall of the connecting pipe 2; the outer wall of the vertical annular air supply pipe 3 is provided with exhaust holes along its axial and radial directions to supply air along the length direction of the ridge and the direction of crops planted on both sides;

[0051] The annular heating pipe 4 is fixed inside the vertical annular air supply pipe 3 and the two are coaxially arranged;

[0052] The fan 5 is arranged in the cavity 11, and the fan 5 is fixed to the inner wall of the base 1 with bolts. The air outlet pipe 51 of the fan 5 is connected with the air outlet 13, and the connection between the air outlet pipe 51 and the air outlet 13 is sealed with a sealant to prevent air leakage, so as to blow air into the pipelines of the connecting pipe 2 and the vertical annular air supply pipe 3.

[0053] When the device is used specifically, the device is placed on the ground and arranged between two adjacent ridges of crops planted in the facility shed. The annular heating pipe 4 can heat the air inside the vertical annular air supply pipe 3, and the fan 5 is used to blow air into the connecting pipe 2. The airflow will enter the vertical annular air supply pipe 3 through the connecting pipe 2. The outer wall of the vertical annular air supply pipe 3 is provided with exhaust holes in the axial and radial directions, so that the hot air will be blown out radially and axially along the vertical annular air supply pipe 3, so as to realize the three-dimensional hot air or natural wind supply from the bottom of the facility shed to the surrounding areas; when the axial direction of the annular structure of the vertical annular air supply pipe 3 is consistent with the direction of the ridge, the hot air can be accelerated to circulate in the area between the crops planted on the two ridges, and the hot air can cover the crop planting areas on both sides of the device, so that the temperature and humidity in the facility shed can be uniform more quickly; the device can turn on the air supply or heating function separately, and can also turn on the air supply and heating at the same time, which can be beneficial to the regulation of temperature and humidity in the facility shed, and effectively solve the problem of uneven temperature and humidity in different areas of the facility shed.

[0054] In some specific embodiments, the connecting pipe 2 includes a first pipe opening 21, a second pipe opening 22 and a third pipe opening 23;

[0055] The first pipe opening 21 is located at the bottom end of the connecting pipe 2 and communicates with the air outlet 13 ; the second pipe opening 22 and the third pipe opening 23 are both located on the side wall of the connecting pipe 2 and are symmetrically arranged along the axis of the connecting pipe 2 .

[0056] The bottom of the vertical annular air supply pipe 3 has a break to form a first interface 31 and a second interface 32 of the vertical annular air supply pipe 3. The first interface 31 is connected and fixed to the second pipe opening 22, and the second interface 32 is connected and fixed to the third pipe opening 23.

[0057] The bottom of the annular heating tube 4 is inserted into the second tube opening 22 and the third tube opening 23 .

[0058] Specifically, the vertical annular air supply pipe 3 and the connecting pipe 2 can be an integrally connected structure.

[0059] In some specific embodiments, the outer wall of the vertical annular air supply pipe 3 is provided with axial exhaust holes 33 and radial exhaust holes 34;

[0060] The axial exhaust hole 33 is located on the inner side wall of the annular structure of the vertical annular air supply pipe 3, and extends from the first interface 31 to the second interface 32 along the annular direction of the vertical annular air supply pipe 3 to form an arc structure, and supplies air to the axial direction of the annular structure of the vertical annular air supply pipe 3;

[0061] The radial exhaust hole 34 is located on the outer side wall of the annular structure of the vertical annular air supply pipe 3 , and extends in an arc shape from the first interface 31 to the second interface 32 along the annular direction of the vertical annular air supply pipe 3 , and supplies air radially to the annular structure of the vertical annular air supply pipe 3 .

[0062] The axial exhaust holes 33 and the radial exhaust holes 34 both extend in an arc-shaped structure from the first interface 31 to the second interface 32 along the vertical annular air supply pipe 3, thereby increasing the air supply range and area and achieving a better three-dimensional air supply effect.

[0063] In some specific embodiments, a fixed bracket 6 is also included; one end of the fixed bracket 6 is fixed to the annular heating tube 4, and the other end is bonded and fixed to the inner wall of the vertical annular air supply tube 3, so as to fix and support the annular heating tube 4 and space the annular heating tube 4 and the inner wall of the vertical annular air supply tube 3 from each other.

[0064] The fixing bracket 6 plays the role of fixing and supporting the annular heating tube 4 to prevent the annular heating tube 4 from contacting the inner wall of the vertical annular air supply tube 3 and causing scalding.

[0065] Specifically, the fixed bracket 6 includes a fixed clamping ring 61 and a fixed rod 62. The fixed rod 62 is arranged radially along the fixed clamping ring 61 and is integrally connected to the outer wall of the fixed clamping ring 61. The outer wall of the fixed clamping ring 61 has an opening, and the annular heating tube 4 can be clamped on the annular heating tube 4. The end of the fixed rod 62 away from the fixed clamping ring 61 is bonded and fixed to the inner wall of the annular air supply pipe 3.

[0066] In some specific embodiments, there are multiple fixed brackets 6 , and the multiple fixed brackets 6 are circumferentially spaced apart along the vertical annular air supply pipe 3 .

[0067] In some specific embodiments, connecting blocks 35 are provided between the inner walls opposite to the axial exhaust holes 33 and between the inner walls opposite to the radial exhaust holes 34 , and both ends of the connecting blocks 35 are bonded and fixed to the inner walls of the corresponding axial exhaust holes 33 and radial exhaust holes 34 .

[0068] The connecting block 35 serves to reinforce the vertical annular air supply pipe 3, so that the vertical annular air supply pipe 3 has a stable structure to prevent the air outlet from being deformed.

[0069] In some specific embodiments, the fan 5 is a centrifugal fan.

[0070] In some specific embodiments, a rotating disk 14 is hinged at the bottom of the base 1 , and a counterweight is embedded at the bottom of the rotating disk 14 .

[0071] Specifically, a counterweight block 141 is embedded at the bottom of the rotating disk 14, and the counterweight block 141 is fixed to the rotating disk 14 by bolts. A rotating shaft 142 is provided at the center of the rotating disk 14; one end of the rotating shaft 142 is fixed to the bottom of the base 1, and the other end is rotatably connected to the rotating disk 14, so that a hinged structure is formed between the base 1 and the rotating disk 14; the base 1 and the rotating disk 14 can abut against each other, and in the air supply state, the base 1 will not rotate spontaneously due to the static friction between the base 1 and the rotating disk 14; when in use, the rotating disk 14 contacts the ground, and the base 1 and the rotating disk 14 are hinged, so that the base 1 can be manually adjusted to rotate relative to the rotating disk 14, thereby changing the air supply direction of the device.

[0072] An embodiment of the utility model discloses a combined structure of a heating and air supply device for a facility shed, comprising two or more of the above-mentioned heating and air supply devices for the facility shed; the two or more heating and air supply devices are arranged between two adjacent ridges of crops planted in the facility shed, and are spaced apart along the length direction of the ridge; the air supply directions of the axial exhaust holes 33 of the two or more heating and air supply devices are all arranged along the length direction of the ridge.

[0073] Specifically, the annular heating tube 4 and the fan 5 are each provided with switches separately, and can be turned on and off separately.

[0074] Two or more heating and air supply devices are used in combination and arranged at intervals along the length of the ridge. They can be suitable for heating and air supply of facility sheds of any size and can quickly achieve uniform temperature and humidity in the facility shed. During specific use, the heating and air supply functions can be controlled separately as needed, that is, when the temperature meets the requirements, only the air supply function is turned on for air circulation to improve the uniformity of humidity distribution in the facility shed.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A facility shed heating and air supply device, arranged between two adjacent ridges of planted crops in the facility shed, characterized in that: include: A base (1), wherein the base (1) has a cavity (11) inside; an air inlet (12) is provided on a side wall of the base (1); and an air outlet (13) is provided on the top of the base (1); A connecting pipe (2), the connecting pipe (2) being axially and vertically fixed on the top surface of the base (1); the top of the connecting pipe (2) is closed, and the bottom pipe opening thereof is correspondingly connected to the air outlet (13); A vertical annular air supply pipe (3), the bottom of which is fixed to and communicates with the side wall of the connecting pipe (2); the outer wall of the vertical annular air supply pipe (3) is provided with exhaust holes along its axial direction and radial direction, so as to supply air along the length direction of the ridge and in the direction of crops planted on both sides; An annular heating pipe (4), the annular heating pipe (4) being arranged inside the vertical annular air supply pipe (3) and the two being coaxially arranged; A fan (5), the fan (5) being arranged in the cavity (11), the air outlet pipe (51) of the fan (5) being connected to the air outlet (13) so as to blow air into the connecting pipe (2) and the vertical annular air supply pipe (3).

2. A facility shed heating and air supply device according to claim 1, characterized in that: The connecting pipe (2) comprises a first pipe opening (21), a second pipe opening (22) and a third pipe opening (23); The first pipe opening (21) is located at the bottom end of the connecting pipe (2) and is connected to the air outlet (13); the second pipe opening (22) and the third pipe opening (23) are both located on the side wall of the connecting pipe (2) and are symmetrically arranged along the axis of the connecting pipe (2); The bottom of the vertical annular air supply pipe (3) has a fracture to form a first interface (31) and a second interface (32) of the vertical annular air supply pipe (3), the first interface (31) is connected and fixed to the second pipe opening (22), and the second interface (32) is connected and fixed to the third pipe opening (23); The bottom of the annular heating tube (4) is inserted into the second tube opening (22) and the third tube opening (23).

3. A facility shed heating and air supply device according to claim 2, characterized in that: The outer wall of the vertical annular air supply pipe (3) is provided with axial air exhaust holes (33) and radial air exhaust holes (34); The axial air exhaust hole (33) is located on the inner side wall of the annular structure of the vertical annular air supply pipe (3), and extends in an arc-shaped structure from the first interface (31) to the second interface (32) along the annular direction of the vertical annular air supply pipe (3), and supplies air axially to the annular structure of the vertical annular air supply pipe (3); The radial air exhaust hole (34) is located on the outer side wall of the annular structure of the vertical annular air supply pipe (3), and extends in an arc-shaped structure from the first interface (31) to the second interface (32) along the annular direction of the vertical annular air supply pipe (3), and supplies air radially to the annular structure of the vertical annular air supply pipe (3).

4. A facility shed heating and air supply device according to claim 3, characterized in that: It also comprises a fixing bracket (6); one end of the fixing bracket (6) is fixed to the annular heating pipe (4), and the other end is fixed to the inner wall of the vertical annular air supply pipe (3), so as to fix and support the annular heating pipe (4) and space the annular heating pipe (4) and the inner wall of the vertical annular air supply pipe (3) from each other.

5. A facility shed heating and air supply device according to claim 4, characterized in that: There are a plurality of fixed brackets (6), and the plurality of fixed brackets (6) are arranged at intervals in the annular direction along the vertical annular air supply pipe (3).

6. A facility shed heating and air supply device according to claim 3, characterized in that: A connecting block (35) is provided between the inner walls opposite to the axial exhaust hole (33) and between the inner walls opposite to the radial exhaust hole (34), and both ends of the connecting block (35) are fixedly connected to the inner walls of the corresponding axial exhaust hole (33) and radial exhaust hole (34).

7. The facility shed heating and air supply device according to claim 1, characterized in that: The fan (5) is a centrifugal fan.

8. The facility shed heating and air supply device according to claim 1, characterized in that: A rotating disk (14) is hingedly connected to the bottom of the base (1) via a rotating shaft, and a counterweight block is embedded in the bottom of the rotating disk (14).

9. A combined structure of a facility shed heating and air supply device, characterized in that: It comprises two or more heating and air supply devices for a facility shed as described in any one of claims 1 to 8; the two or more heating and air supply devices are arranged between two adjacent ridges of crops planted in the facility shed, and are spaced apart along the length direction of the ridge; the air supply direction of the axial exhaust holes of the two or more heating and air supply devices are arranged along the length direction of the ridge.

Images