Air volume regulating device for air duct system

Abstract

The present invention discloses an air volume regulating device for an air duct system, belonging to the technical field of air volume regulation, comprising an air duct, the air duct being provided with a branch pipe opening, a sleeve being installed on the branch pipe opening, the first end of the sleeve being open, the first end of the sleeve being sealed and fixedly connected to the branch pipe opening, the second end of the sleeve being closed, the peripheral wall of the sleeve being circumferentially provided with a plurality of air outlets with the axis of the sleeve as the center, a slide plate being provided in the sleeve for limited sliding, a sealing sleeve being frictionally connected to the inner wall of the sleeve being provided on the slide plate, a spring being fixedly connected between the slide plate and the inner wall of the second end of the sleeve, and the air outlet being opened or closed by sliding the sealing sleeve along the axis direction of the sleeve. The present invention sets a sealing sleeve so that when the pressure in the air duct system is in a balanced state, the sealing sleeves in the plurality of sleeves connected to the branch pipe openings are caused to slide synchronously to open the air outlets by the air pressure inside the air duct system, so that the wind force flowing out of each branch pipe opening is uniform.

Description

Technical Field

[0001] The invention belongs to the technical field of air volume regulation, and in particular relates to an air volume regulating device for an air duct system. Background Art

[0002] The static pressure method for calculating air volume is a method for determining the air volume by measuring the static pressure loss in the air duct. When using the static pressure method to calculate air volume, it is necessary to find a point in the duct system where the pressure is basically stable and arrange a static pressure sensor. The air volume is calculated by reading the sensor value, and finally the average air volume is calculated by the average value. However, in the duct system, multiple air outlets arranged on the duct may correspond to different rooms. Therefore, in order to ensure uniform air outlet in each room, the air outlet of each air outlet needs to be adjusted.

[0003] In the prior art, a Chinese patent with announcement number CN117847740B discloses a new displacement-type automatic air volume adjustment control device, which can adjust the gap of the ventilation part according to the demand for air volume circulation. However, the above adjustment judgment method is manual judgment. In the air duct system, there are generally multiple air outlets on one air duct system. As the wind direction moves, the pressure of the air outlet at the back will gradually decrease, resulting in a smaller air volume at the subsequent air outlets. Therefore, the above adjustment method is difficult to ensure uniform air volume at each air outlet.

[0004] Therefore, it is necessary to propose an air volume regulating device for an air duct system to solve the above problems. Summary of the invention

[0005] In view of this, an object of the present invention is to provide an air volume regulating device for an air duct system, so as to solve the problem in the prior art that it is difficult to ensure uniform air volume at each air outlet in the air duct system.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides an air volume regulating device for an air duct system, comprising an air duct, wherein the air duct is provided with a branch pipe opening, a sleeve is installed on the branch pipe opening, the first end of the sleeve is open, the first end of the sleeve is sealed and fixedly connected to the branch pipe opening, the second end of the sleeve is closed, a peripheral wall of the sleeve is circumferentially provided with a plurality of air outlets with the sleeve axis as the center, a slide plate is limitedly installed in the sleeve for sliding movement, a sealing sleeve is provided on the slide plate and is frictionally connected to the inner wall of the sleeve, a spring is fixedly connected between the slide plate and the inner wall of the second end of the sleeve, and the sealing sleeve can be slid along the axis of the sleeve to open or close the air outlet.

[0008] Furthermore, a rotating plate is rotatably installed on the upper limit position of the slide plate, and a plurality of closing plates corresponding to the air outlets are circumferentially arranged on the rotating plate with the axis of the rotating plate as the center, and a gap consistent with the size of the air outlet is formed between two adjacent closing plates. Rotating the rotating plate can make the gap correspond to the air outlet to open the air outlet, and rotating the rotating plate to make the gap and the air outlet misaligned can enable the closing plate to close the air outlet.

[0009] Furthermore, a key shaft is rotatably connected inside the sleeve, and the key shaft is connected to a rotating plate key. A through hole is provided on the slide plate for allowing the key shaft to pass through, and a gap is provided between the through hole and the key shaft. A knob is rotatably installed on the outer wall of the second end of the sleeve, and the knob is sealingly connected to the sleeve, and one end of the knob extends into the sleeve and is fixedly connected to the key shaft.

[0010] Furthermore, the sealing sleeve side wall is circumferentially provided with a plurality of limiting grooves with the sealing sleeve axis as the center, the sleeve inner wall is provided with a plurality of limiting rods corresponding to the limiting grooves one by one, the limiting rods are slidably connected to the limiting grooves, the rotating plate side wall is circumferentially provided with a plurality of tooth grooves connected to the limiting grooves one by one with the rotating plate axis as the center, the tooth groove is provided with a first inclined edge and a vertical edge connected to the first inclined edge, the limiting rod is provided with a second inclined edge matching the first inclined edge at the top end, and when the rotating plate is slidably moved so that the first inclined edge of the tooth groove abuts against the second inclined edge of the limiting rod, continuing to slide the rotating plate can drive the rotating plate to rotate through the limiting rod until the limiting rod abuts against the vertical edge of the tooth groove.

[0011] Furthermore, a displacement sensor for detecting the movement displacement of the slide plate is installed in the sleeve.

[0012] Furthermore, a limiting ring is fixedly installed in the sleeve, and when the sealing sleeve closes the air outlet, the first side wall of the limiting ring abuts against the closing plate, and the sliding slide makes the sealing sleeve slide to drive the closing plate to separate from the limiting ring so that the air outlet can be opened.

[0013] Furthermore, the second side wall of the limiting ring abuts against the side of the branch pipe opening away from the air duct, and a plurality of connecting holes are circumferentially arranged on the branch pipe opening in the axial direction of the branch pipe opening. The sleeve is threadedly connected with a plurality of bolts corresponding to the connecting holes one by one, and the bolts are threadedly connected to the connecting holes to fix the sleeve to the branch pipe opening.

[0014] Furthermore, a conical plate is fixedly mounted on the rotating plate.

[0015] The beneficial effects of the present invention are:

[0016] The present invention sets a sealing sleeve so that when the pressure in the air duct system is in a balanced state, the air pressure inside the air duct system causes the sealing sleeves in multiple sleeves connected to the branch pipe openings to slide synchronously to open the air outlets, so that the wind force flowing out of each branch pipe opening is uniform; and by setting a spring, the air pressure and the spring elastic force work together to adjust the opening range of the air outlet, thereby achieving the effect of uniformly adjusting the wind force flowing out of each branch pipe opening; and the sealing sleeve is frictionally connected to the inner wall of the sleeve, and resistance is applied to the sealing sleeve by friction force, so as to prevent the sealing sleeve from shaking back and forth rapidly under the action of the spring and air pressure and affecting the air outlet effect.

[0017] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0019] Figure 1 An exploded view of the connection structure between the sleeve and the branch pipe opening according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the cooperation between the limiting rod and the tooth groove according to an embodiment of the present invention;

[0021] Figure 3 A cross-sectional view of a sleeve installation structure according to an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the air duct system according to an embodiment of the present invention.

[0023] The markings in the accompanying drawings are as follows: air duct 1, branch pipe opening 2, connecting hole 201, sleeve 3, air outlet 301, slide plate 302, sealing sleeve 303, spring 304, rotating plate 4, closing plate 401, notch 402, conical plate 403, key shaft 5, through hole 501, knob 502, limiting slide groove 6, limiting rod 601, tooth groove 602, first inclined edge 603, vertical edge 604, second inclined edge 605, limiting ring 7, bolt 8. DETAILED DESCRIPTION

[0024] like Figure 1~Figure 4As shown, the present invention provides an air volume regulating device for an air duct system, comprising an air duct 1, wherein the air duct 1 is provided with a branch pipe opening 2, and a sleeve 3 is installed on the branch pipe opening 2. The first end of the sleeve 3 is open, and the first end of the sleeve 3 is sealed and fixedly connected to the branch pipe opening 2, and the second end of the sleeve 3 is closed. The peripheral wall of the sleeve 3 is circumferentially provided with a plurality of air outlets 301 with the axis of the sleeve 3 as the center, and a slide plate 302 is slidably installed in the sleeve 3, and a sealing sleeve 303 frictionally connected with the inner wall of the sleeve 3 is provided on the slide plate 302, and the sealing sleeve 303 can close the air outlet 301, and a spring 304 is fixedly connected between the slide plate 302 and the inner wall of the second end of the sleeve 3, and the sealing sleeve 303 can be opened or closed by sliding along the axial direction of the sleeve 3.

[0025] In the present solution, a plurality of air ducts 1 are spliced ​​together at their ends to form an air duct system. The first end of the air duct system is connected to an air inlet mechanism (not shown in the figure), and the second end of the air duct system is closed. In the initial state, the sealing sleeve 303 is closed by the air outlet 301. After wind is injected into the air duct system through the air inlet mechanism, the wind moves along the air duct system to the closed end of the air duct system. After the pressure in the air duct system increases, the air pressure squeezes the slide plate 302, drives the sealing sleeve 303 to slide, and squeezes the spring 304. Since the pressures inside the air duct system are in a balanced state, the slide plates 302 in each air duct 1 move synchronously, so that the plurality of air outlets 301 are opened synchronously, so that the wind is discharged evenly from the air outlet 301.

[0026] In the present solution, by setting the sealing sleeve 303 so that the pressure in the air duct system is in a balanced state, the air pressure inside the air duct system causes the sealing sleeves 303 in the sleeves 3 connected to the branch pipe openings 2 to slide synchronously to open the air outlets 301, so that the wind force flowing out of each branch pipe opening 2 is uniform; and by setting the spring 204, the air pressure and the elastic force of the spring 204 work together to adjust the opening range of the air outlet 301, thereby achieving the effect of uniformly adjusting the wind force flowing out of each branch pipe opening 2; and the sealing sleeve 303 is frictionally connected to the inner wall of the sleeve 3, and friction force applies resistance to the sealing sleeve 303 to prevent the sealing sleeve 303 from shaking back and forth rapidly under the action of the spring 304 and air pressure, thereby affecting the air outlet effect.

[0027] In one embodiment of the present invention, the slide plate 302 is rotatably mounted with a rotating plate 4 at the upper limit position, and a plurality of closing plates 401 corresponding to the air outlet 301 are circumferentially arranged on the rotating plate 4 with the axis of the rotating plate 4 as the center, and a gap 402 consistent with the size of the air outlet 301 is formed between two adjacent closing plates 401. Rotating the rotating plate 4 can make the gap 402 correspond to the air outlet 301, so as to open the air outlet 301. Rotating the rotating plate 4 to make the gap 402 misalign with the air outlet 301 can make the closing plate 401 close the air outlet 301.

[0028] In this solution, when the rotating plate 4 is rotated to make the notch 402 correspond to the air outlet 301, the wind force causes the slide plate 302 to drive the sleeve 3 to move to open the air outlet 301, and the wind force can be discharged from the air outlet 301 at this time; when the rotating plate 4 is rotated to make the notch 402 and the air outlet 301 misaligned, that is, the closing plate 401 closes the air outlet 301, and the wind force cannot be discharged from the air outlet 301 at this time.

[0029] This solution sets a closing plate 401 so that when there is no need to exhaust air from the branch pipe openings 2 on one or more of the sleeves 3, the closing plate 401 can be rotated to close the air outlet 301 to prevent wind from being discharged, thereby ensuring that the branch pipe openings 2 on the remaining sleeves 3 can exhaust air evenly.

[0030] In one embodiment of the present invention, a key shaft 5 is rotatably connected inside the sleeve 3, and the key shaft 5 is key-connected to the rotating plate 4. A through hole 501 is provided on the slide plate 302 for allowing the key shaft 5 to pass through, and a gap is provided between the through hole 501 and the key shaft 5. A knob 502 is rotatably installed on the outer wall of the second end of the sleeve 3, and the knob 502 is sealingly connected to the sleeve 3. One end of the knob 502 extends into the sleeve 3 and is fixedly connected to the key shaft 5.

[0031] In this solution, rotating the knob 502 can rotate the key shaft 5, thereby driving the rotating plate 4 to rotate, so as to manually open or close the air outlet 301.

[0032] In one embodiment of the present invention, the side wall of the sealing sleeve 303 is circumferentially provided with a plurality of limiting grooves 6 with the axis of the sealing sleeve 303 as the center, the inner wall of the sleeve 3 is provided with a plurality of limiting rods 601 corresponding to the limiting grooves 6 one by one, the limiting rods 601 are slidably connected with the limiting grooves 6, the side wall of the rotating plate 4 is circumferentially provided with a plurality of tooth grooves 602 connected to the limiting grooves 6 one by one with the axis of the rotating plate 4 as the center, the tooth groove 602 is provided with a first inclined edge 603 and a vertical edge 604 connected to the first inclined edge 603, the top of the limiting rod 601 is provided with a second inclined edge 605 matching the first inclined edge 603, when the rotating plate 4 is slidably moved so that the first inclined edge 603 of the tooth groove 602 abuts against the second inclined edge 605 of the limiting rod 601, continuing to slide the rotating plate 4 can drive the rotating plate 4 to rotate through the limiting rod 601 until the limiting rod 601 abuts against the vertical edge 604 of the tooth groove 602.

[0033] In this solution, by setting a limit rod 601 to cooperate with the limit slide groove 6, the sealing sleeve 303 can slide in the vertical direction in the sleeve 3. When the sealing sleeve 303 drives the rotating plate 4 to move downward, until the first inclined edge 603 of the tooth groove 602 is in contact with the second inclined edge 605 at the top of the limit rod 601, the rotating plate 4 continues to move downward, which will drive the rotating plate 4 to rotate.

[0034] Through the design of the above-mentioned structure, in this solution, when the notch 402 on the rotating plate 4 is misaligned with the air outlet 301, the sealing sleeve 303 slides downward to enable the closing plate 401 to close the air outlet 301. When the pressure in the air duct 1 does not reach the threshold, the closing plate 401 closes the air outlet 301 to ensure uniform air outlet from the remaining branch pipe openings 2. When the pressure in the air duct 1 reaches the threshold, the rotating plate 4 will be driven to continue to move downward, so that the limit rod 601 drives the rotating plate 4 to rotate, thereby opening the air outlet 301 to relieve pressure and avoid all the air outlets 301 on the air duct 1 being closed due to misoperation. Under the action of the pressure in the air duct 1, the rotating plate 4 can be rotated to drive the air outlet 301 to open, thereby improving safety.

[0035] In one embodiment of the present invention, a displacement sensor (not shown in the figure) for detecting the movement displacement of the slide plate 302 is installed in the sleeve 3.

[0036] In this solution, a displacement sensor is provided to identify the movement displacement of the slide plate 302, thereby identifying the size of the air outlet 301 opened, and then according to the air volume calculation formula Q = v× A, where Q represents the air volume, v represents the wind speed (unit: m / s), and A represents the cross-sectional area of ​​the air duct (unit: m²), the size of the air outlet 301 opened is the cross-sectional area of ​​the air duct, thereby realizing the judgment of the air volume.

[0037] In one embodiment of the present invention, a limiting ring 7 is fixedly installed in the sleeve 3. When the sealing sleeve 303 closes the air outlet 301, the first side wall of the limiting ring 7 abuts against the closing plate 401. When the sliding slide 302 causes the sealing sleeve 303 to slide to drive the closing plate 401 to separate from the limiting ring 7, the air outlet 301 can be opened.

[0038] In this solution, the limiting ring 7 is arranged at the top of the closing plate 401, and the spring 304 is always in a compressed state. Under the action of the spring 304, the top of the closing plate 401 abuts against the bottom wall of the limiting ring 7, and the bottom end of the closing plate 401 is located at the top wall of the air outlet 301. When the closing plate 401 and the air outlet 301 are misaligned, the closing plate 401 moves downward to disengage from the limiting ring 7, so that the air outlet 301 is opened.

[0039] In one embodiment of the present invention, the second side wall of the limiting ring 7 abuts against the side of the branch pipe opening 2 away from the air duct 1, and a plurality of connecting holes 201 are circumferentially arranged on the branch pipe opening 2 in the axial direction of the branch pipe opening 2. A plurality of bolts 8 corresponding to the connecting holes 201 are threadedly connected to the sleeve 3, and the bolts 8 are threadedly connected to the connecting holes 201 to fix the sleeve 3 to the branch pipe opening 2.

[0040] In this solution, when installing the sleeve 3, the sleeve 3 is moved so that the second side wall of the limit ring 7 is abutted against the side of the branch pipe opening away from the air duct 1, and the position of the sleeve 3 is adjusted by rotation so that the bolt 8 corresponds to the connecting hole 201. The bolt 8 is rotated and threadedly connected to the connecting hole 201 to complete the fixation of the sleeve 3 and the branch pipe opening 2, thereby facilitating installation and disassembly.

[0041] In one embodiment of the present invention, a conical plate 403 is fixedly mounted on the rotating plate 4 so that the wind force is diffused along the conical plate 403 to the air outlet 301 to improve the uniformity of the air volume discharged from the air outlet 301 .

[0042] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An air volume regulating device for an air duct system, comprising an air duct, characterized in that: The air duct is provided with a branch pipe opening, and a sleeve is installed on the branch pipe opening, and the first end of the sleeve is opened, and the first end of the sleeve is sealed and fixedly connected to the branch pipe opening, and the second end of the sleeve is closed, and the peripheral wall of the sleeve is circumferentially provided with a plurality of air outlets with the sleeve axis as the center, and a slide plate is slidably installed in the sleeve, and a sealing sleeve is provided on the slide plate, which is frictionally connected with the inner wall of the sleeve, and a spring is fixedly connected between the slide plate and the inner wall of the second end of the sleeve, and the sealing sleeve can be opened or closed by sliding along the axis direction of the sleeve; a rotating plate is rotatably installed on the upper limit position of the slide plate, and a plurality of closing plates corresponding to the air outlets are circumferentially provided on the rotating plate with the rotating plate axis as the center, and a notch with the same size of the air outlet is formed between two adjacent closing plates, and the rotating plate can make the notch correspond to the air outlet to open the air outlet, and the rotating plate can make the notch and the air outlet misaligned so that the closing plate can close the air outlet; a key shaft is rotatably connected in the sleeve , the key shaft is connected with the rotating plate key, the slide plate is provided with a through hole for the key shaft to pass through, a gap is provided between the through hole and the key shaft, a knob is rotatably installed on the outer wall of the second end of the sleeve, the knob is sealed and connected to the sleeve, and one end of the knob extends into the sleeve and is fixedly connected to the key shaft; the side wall of the sealing sleeve is circumferentially provided with a plurality of limiting grooves with the sealing sleeve axis as the center, the inner wall of the sleeve is provided with a plurality of limiting rods corresponding to the limiting grooves one by one, the limiting rod is slidably connected to the limiting groove, the side wall of the rotating plate is circumferentially provided with a plurality of tooth grooves connected to the limiting grooves one by one with the rotating plate axis as the center, the tooth groove is provided with a first inclined edge and a vertical edge connected to the first inclined edge, the top of the limiting rod is provided with a second inclined edge matched with the first inclined edge, when the rotating plate is slid to make the first inclined edge of the tooth groove abut against the second inclined edge of the limiting rod, the rotating plate can be driven to rotate by the limiting rod by continuing to slide the rotating plate until the limiting rod abuts against the vertical edge of the tooth groove.

2. The air volume regulating device for an air duct system according to claim 1, characterized in that: A displacement sensor for detecting the movement displacement of the slide plate is installed in the sleeve.

3. The air volume regulating device for an air duct system according to claim 2, characterized in that: A limiting ring is fixedly installed in the sleeve. When the sealing sleeve closes the air outlet, the first side wall of the limiting ring abuts against the closing plate. The sliding slide makes the sealing sleeve slide to drive the closing plate to separate from the limiting ring so that the air outlet can be opened.

4. The air volume regulating device for an air duct system according to claim 3, characterized in that: The second side wall of the limiting ring abuts against the branch pipe opening away from the air duct side, and a plurality of connecting holes are circumferentially arranged on the branch pipe opening in the axial direction of the branch pipe opening. The sleeve is threadedly connected with a plurality of bolts corresponding to the connecting holes one by one, and the bolts are threadedly connected to the connecting holes to fix the sleeve to the branch pipe opening.

5. The air volume regulating device for an air duct system according to claim 4, characterized in that: A conical plate is fixedly mounted on the rotating plate.

Images