Auxiliary air supply device for building air tightness detection

Abstract

An auxiliary air supply device for building air tightness detection comprises a supporting frame, sealing cloth arranged on the outer surface of the supporting frame in a wrapping mode and a draught fan. The supporting frame comprises a transverse support, a longitudinal support and an L-shaped supporting rod. The transverse support and the longitudinal support are arranged in a cross shape, longitudinal connecting parts are arranged at the two ends of the transverse support respectively, transverse connecting parts are arranged at the two ends of the longitudinal support respectively, and the two ends of the L-shaped supporting rod are slidably connected to the transverse connecting parts and the longitudinal connecting parts respectively. The transverse connecting part, the longitudinal connecting part and the L-shaped supporting rod form a square frame structure; an air inlet is formed in the sealing cloth; the fan is arranged outside the building, and the outlet end of the fan is connected with the air inlet. The transverse support and the longitudinal support which are distributed in the cross shape are adopted, stable supporting force can be provided in the transverse direction and the longitudinal direction, the supporting frame is prevented from deviating, and good sealing can be formed at the entrance door of the building so as to prevent air leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of building air tightness detection, in particular to an auxiliary air supply device for building air tightness detection. Background Art

[0002] The interior of a building is a relatively closed space, and the indoor air quality needs to be regulated by a variety of measures. Infiltration and exchange of indoor and outdoor air is a common practice. Passive buildings require that when the doors and windows are closed, the indoor and outdoor air will flow and exchange with each other under the action of wind and atmospheric pressure. If a house is regarded as a container, there will be certain requirements for the airtightness of this container. At the same time, this airtightness is related to the air quality of the house, the energy consumption of the house, and the health of the residents. By testing the indoor airtightness of the building, an evaluation of the building environment can be made. According to relevant specifications, the blast door method needs to be used to measure the overall airtightness of the building. At the door and window openings, select a suitable location, install the test equipment, and conduct a positive and negative pressure simulation test of the building.

[0003] The existing conventional auxiliary detection instruments are not firm after being installed on the window frame (door) opening, and there is a problem of air leakage. Because the support structure is not flatly attached to the window frame (door frame), and the window frame is not all a regular flat surface, when the fan (electric fan) is turned on, the sealing cloth will expand and cause air leakage with the window frame (door frame). The middle support will be unevenly stressed and offset, causing the overall support frame to offset. Summary of the invention

[0004] In order to solve the technical problems existing in the above-mentioned technology, it is necessary to provide a building air tightness detection auxiliary air supply device.

[0005] An auxiliary air supply device for building air tightness detection comprises a support frame erected at a building entrance door, a sealing cloth wrapped around the outer surface of the support frame, and a fan;

[0006] The support frame includes a transverse support, a longitudinal support, and an L-shaped support rod; the transverse support and the longitudinal support are arranged in a cross shape, the two ends of the transverse support are respectively provided with longitudinal connecting parts, the two ends of the longitudinal support are respectively provided with transverse connecting parts, there are four L-shaped support rods, each L-shaped support rod is evenly distributed in the center of the support frame, and the two ends of the L-shaped support rod are respectively slidably connected to the transverse connecting part and the longitudinal connecting part, so that the transverse connecting part, the longitudinal connecting part, and the L-shaped support rod form a square frame structure;

[0007] The sealing cloth is provided with an air inlet;

[0008] The fan is arranged outside the building, and the outlet end of the fan is connected to the air inlet.

[0009] Preferably, the length of the transverse bracket is adjustable so that the transverse bracket can adjust the distance between the two longitudinal connecting parts to adjust the width of the support frame; the length of the longitudinal bracket is adjustable so that the longitudinal bracket can adjust the distance between the two transverse connecting parts to adjust the height of the support frame.

[0010] Preferably, the transverse support includes a transverse tube and transverse rods arranged at both ends of the transverse tube; the transverse rods and the transverse tube are arranged in a straight line, the two transverse rods are threadedly connected to the transverse tube, and the threads connecting the two transverse rods to the transverse tube are opposite, the end of the transverse rod away from the transverse tube is rotatably connected to the longitudinal connecting part, and the circumferential rotation of the transverse tube can make the two transverse rods move back and forth synchronously along the axial direction of the transverse tube.

[0011] Preferably, the longitudinal support includes a longitudinal tube and longitudinal rods arranged at both ends of the longitudinal tube; the longitudinal rods and the longitudinal tube are arranged in a straight line, the two longitudinal rods are threadedly connected to the longitudinal tube, and the threads connecting the two longitudinal rods to the longitudinal tube are opposite, and the end of the longitudinal rod away from the longitudinal tube is rotatably connected to the transverse connecting part, and when the longitudinal tube is rotated circumferentially, the two longitudinal rods can be synchronously reciprocated along the axial direction of the longitudinal tube.

[0012] Preferably, the transverse connecting portion and the longitudinal connecting portion are both provided with a sliding groove for the L-shaped support rod to slide.

[0013] Preferably, sliding rods adapted to the sliding grooves are provided on both ends of the L-shaped support rod.

[0014] Preferably, the transverse connecting portion and the longitudinal connecting portion are both groove-shaped structures, and rubber cushion layers are provided on the outer side walls of the transverse connecting portion and the longitudinal connecting portion.

[0015] Preferably, a conical tube is provided at the air inlet.

[0016] Preferably, a corrugated hose is provided at the outlet end of the blower, and the outlet end of the corrugated hose is connected to the small end of the conical cylinder.

[0017] Preferably, a support base is provided below the fan to adjust the height of the fan.

[0018] Compared with the prior art, the auxiliary air supply device for building air tightness detection provided by the utility model has a square frame structure formed by the transverse connection part, the longitudinal connection part, and the L-shaped support rod. Through the transverse brackets and longitudinal brackets arranged in a cross shape, the outer side surfaces of the transverse connection part, the longitudinal connection part, and the L-shaped support rod can press the sealing cloth tightly between the inner side surface of the window frame (door) and the support frame, so that the inner side surface of the window frame (door) and the sealing cloth fit tightly, thereby forming a good seal at the building entrance door to prevent air leakage. The use of the transverse brackets and longitudinal brackets arranged in a cross shape can provide stable supporting force in the transverse and longitudinal directions to prevent the support frame from deflecting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a front view structural schematic diagram of the utility model.

[0021] Figure 2 For this utility model Figure 1 Schematic diagram of the axial structure.

[0022] Figure 3 For this utility model Figure 1 Schematic diagram of the left view structure.

[0023] Figure 4 It is a structural schematic diagram of the longitudinal connecting part of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the transverse connecting part of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the L-shaped support rod of the utility model.

[0026] In the figure: supporting frame 01, transverse bracket 11, transverse tube 111, transverse rod 112, longitudinal bracket 12, longitudinal tube 121, longitudinal rod 122, L-shaped supporting rod 13, sealing cloth 02, air inlet 21, fan 03, longitudinal connecting part 04, transverse connecting part 05, slide groove 06, slide rod 07, conical cylinder 08, corrugated hose 09, supporting seat 10. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0029] Please see Figures 1 to 6 The utility model provides an auxiliary air supply device for building air tightness detection, including a support frame 01, a sealing cloth 02, and a fan 03; wherein the support frame 01 is erected at the building entrance door, and the sealing cloth 02 is wrapped around the outer surface of the support frame 01; the sealing cloth 02 is made of a flexible, non-elastic and airtight material. The support frame 01 includes a transverse bracket 11, a longitudinal bracket 12, and an L-shaped support rod 13; the transverse bracket 11 and the longitudinal bracket 12 are arranged in a cross shape, and the two ends of the transverse bracket 11 are respectively provided with longitudinal connecting parts 04, and the two ends of the longitudinal bracket 12 are respectively provided with transverse connecting parts 05. There are four L-shaped support rods 13, each L-shaped support rod 13 is evenly distributed in the center of the support frame 01, and the two ends of the L-shaped support rod 13 are respectively slidably connected to the transverse connecting part 05 and the longitudinal connecting part 04, so that the transverse connecting part 05, the longitudinal connecting part 04, and the L-shaped support rod 13 form a square frame structure; the use of the transverse bracket 11 and the longitudinal bracket 12 arranged in a cross shape can provide stable supporting force in the transverse and longitudinal directions to prevent the support frame 01 from shifting. Through the cross-shaped horizontal brackets 11 and vertical brackets 12, the horizontal connecting part 05, the vertical connecting part 04, and the outer side of the L-shaped support rod 13 can press the sealing cloth 02 tightly between the inner side of the window frame (door) and the support frame 01, so that the inner side of the window frame (door) and the sealing cloth 02 fit tightly, thereby forming a good seal at the building entrance door to prevent air leakage. The sealing cloth 02 is provided with an air inlet 21; the fan 03 is arranged outside the building, and the outlet end of the fan 03 is connected to the air inlet 21; the fan 03 can blow air into the building, and can also blow air from outside the building.

[0030] In one embodiment, the length of the transverse bracket 11 can be adjusted, so that the transverse bracket 11 can adjust the distance between the two longitudinal connecting parts 04 to adjust the width of the support frame 01; the length of the longitudinal bracket 12 can be adjusted, so that the longitudinal bracket 12 can adjust the distance between the two transverse connecting parts 05 to adjust the height of the support frame 01. By adjusting the length of the transverse bracket 11 and the longitudinal bracket 12, the use range of window frames (doors) of different sizes can be achieved to improve applicability; and when fixing, the length of the transverse bracket 11 and the longitudinal bracket 12 can also be adjusted to achieve the sealing cloth 02 being pressed against the top for sealing.

[0031] Specifically, the transverse bracket 11 includes a transverse tube 111 and transverse rods 112 arranged at the two ends of the transverse tube 111; the transverse rods 112 and the transverse tube 111 are arranged in a straight line, and the two transverse rods 112 are threadedly connected to the transverse tube 111, and the threads of the two transverse rods 112 connected to the transverse tube 111 are opposite, and the end of the transverse rod 112 away from the transverse tube 111 is rotatably connected to the longitudinal connecting part 04, and the circumferential rotation of the transverse tube 111 can make the two transverse rods 112 synchronously reciprocate along the axial direction of the transverse tube 111; thereby, the transverse connecting part 05 and the L-shaped support rods 13 located above and below can firmly press the sealing cloth 02 against the inner side of the window frame (door).

[0032] Specifically, the longitudinal bracket 12 includes a longitudinal tube 121 and longitudinal rods 122 arranged at the two ends of the longitudinal tube 121; the longitudinal rods 122 and the longitudinal tube 121 are arranged in a straight line, and the two longitudinal rods 122 are threadedly connected to the longitudinal tube 121, and the threads of the two longitudinal rods 122 connected to the longitudinal tube 121 are opposite, and the end of the longitudinal rod 122 away from the longitudinal tube 121 is rotatably connected to the transverse connecting part 05. When the longitudinal tube 121 is rotated circumferentially, the two longitudinal rods 122 can be synchronously reciprocated along the axial direction of the longitudinal tube 121; thereby, the longitudinal connecting part 04 and the L-shaped support rods 13 located on the left and right sides can firmly press the sealing cloth 02 against the inner side of the window frame (door).

[0033] In one embodiment, both the transverse connecting portion 05 and the longitudinal connecting portion 04 are provided with a sliding groove 06 for the L-shaped support rod 13 to slide.

[0034] Specifically, slide bars 07 matched with the slide groove 06 are arranged on the two ends of the L-shaped support bar 13 , so that the slide bar 07 can slide along the slide groove 06 in a directional manner.

[0035] In one embodiment, the transverse connecting portion 05 and the longitudinal connecting portion 04 are both groove-shaped structures, and a rubber cushion layer is provided on the outer side walls of the transverse connecting portion 05 and the longitudinal connecting portion 04. The rubber cushion layer can be squeezed with the sealing cloth 02 to prevent the sealing cloth 02 from slipping; secondly, after the rubber cushion layer is flattened, the L-shaped support rod 13 can be fitted with the sealing cloth 02.

[0036] In one embodiment, a conical cylinder 08 is provided at the air inlet 21 .

[0037] In one embodiment, a corrugated hose 09 is provided at the outlet end of the fan 03 , and the outlet end of the corrugated hose 09 is connected to the small end of the conical cylinder 08 .

[0038] In one embodiment, a support base 10 is provided under the fan 03, and the height of the table can be adjusted according to the user's habits. The fan 03 can be operated while standing, which is more comfortable and convenient for stable fixation of the fan 03, thereby improving work efficiency.

[0039] In one embodiment, the sealing cloth 02 is provided with air holes, which are connected by a rubber hose, and the outlet end of the rubber hose is sealed by a rubber plug, which can be easily opened or closed during use.

[0040] The above disclosure is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. A building air tightness detection auxiliary air supply device, characterized in that: It includes a support frame erected at the building entrance door, a sealing cloth wrapped around the outer surface of the support frame, and a fan; The support frame includes a transverse support, a longitudinal support, and an L-shaped support rod; the transverse support and the longitudinal support are arranged in a cross shape, the two ends of the transverse support are respectively provided with longitudinal connecting parts, the two ends of the longitudinal support are respectively provided with transverse connecting parts, there are four L-shaped support rods, each L-shaped support rod is evenly distributed in the center of the support frame, and the two ends of the L-shaped support rod are respectively slidably connected to the transverse connecting part and the longitudinal connecting part, so that the transverse connecting part, the longitudinal connecting part, and the L-shaped support rod form a square frame structure; The sealing cloth is provided with an air inlet; The fan is arranged outside the building, and the outlet end of the fan is connected to the air inlet.

2. The auxiliary air supply device for building air tightness detection according to claim 1, characterized in that: The length of the transverse bracket can be adjusted, so that the transverse bracket can adjust the distance between the two longitudinal connecting parts to adjust the width of the support frame; the length of the longitudinal bracket can be adjusted, so that the longitudinal bracket can adjust the distance between the two transverse connecting parts to adjust the height of the support frame.

3. The auxiliary air supply device for building air tightness detection according to claim 2, characterized in that: The transverse bracket includes a transverse tube and transverse rods arranged at the two ends of the transverse tube; the transverse rods and the transverse tube are arranged in a straight line, the two transverse rods are threadedly connected to the transverse tube, and the threads of the two transverse rods connected to the transverse tube are opposite, the end of the transverse rod away from the transverse tube is rotatably connected to the longitudinal connecting part, and the transverse tube is rotated in the circumferential direction, so that the two transverse rods can move back and forth synchronously along the axial direction of the transverse tube.

4. The auxiliary air supply device for building air tightness detection according to claim 3 is characterized in that: The longitudinal support includes a longitudinal tube and longitudinal rods arranged at the two ends of the longitudinal tube; the longitudinal rods and the longitudinal tube are arranged in a straight line, the two longitudinal rods are threadedly connected to the longitudinal tube, and the threads of the two longitudinal rods connected to the longitudinal tube are opposite, and the end of the longitudinal rod away from the longitudinal tube is rotatably connected to the transverse connecting part, and when the longitudinal tube is rotated circumferentially, the two longitudinal rods can be synchronously reciprocated along the axial direction of the longitudinal tube.

5. The auxiliary air supply device for building air tightness detection according to claim 1, characterized in that: The transverse connecting portion and the longitudinal connecting portion are both provided with sliding grooves for the L-shaped supporting rod to slide.

6. The auxiliary air supply device for building air tightness detection according to claim 5, characterized in that: Sliding rods matched with the sliding grooves are arranged on the two ends of the L-shaped supporting rod.

7. The auxiliary air supply device for building air tightness detection according to claim 1, characterized in that: The transverse connecting part and the longitudinal connecting part are both groove-shaped structures, and rubber cushion layers are arranged on the outer side walls of the transverse connecting part and the longitudinal connecting part.

8. The auxiliary air supply device for building air tightness detection according to claim 1, characterized in that: A conical tube is arranged at the air inlet.

9. The auxiliary air supply device for building air tightness detection according to claim 8, characterized in that: The outlet end of the blower is provided with a corrugated hose, and the outlet end of the corrugated hose is connected to the small end of the conical cylinder.

10. The auxiliary air supply device for building air tightness detection according to claim 9, characterized in that: A support base is arranged below the fan to adjust the height of the fan.

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