CN214662088U - Air valve assembly and variable air volume air conditioner - Google Patents

Abstract

The utility model provides an air valve component, it includes: a valve shaft having first and second pins projecting outwardly from an outer peripheral surface thereof at first and second axial positions, respectively; the pipeline-shaped valve body is provided with a first side wall through hole and a second side wall through hole which allow the first pin to pass through the pipeline-shaped valve body on the opposite side walls respectively, and the inner surface of the pipeline-shaped valve body is provided with a first limiting structure; the first bearing and the second bearing are respectively provided with a first bearing through hole corresponding to the first side wall through hole and a second bearing through hole corresponding to the second side wall through hole, and at least one of the first bearing and the second bearing is provided with a second limiting structure; and the air valve plate is arranged on the valve shaft and positioned in the valve body, and can be driven by the valve shaft to rotate between a full-open position and a closed position under the action of the first limiting structure and the second limiting structure. The air valve plate is in rotatory in-process, first pin and second pin are prevented respectively from following first and second bearing hole and deviate from. The utility model discloses still relate to the variable blast volume air conditioner device including this blast gate subassembly.

Description

Air valve assembly and variable air volume air conditioner

Technical Field

The utility model relates to an air valve assembly, it can be used to variable blast volume air conditioning equipment, more specifically, the utility model relates to an air valve assembly with prevent leaping up the design.

Background

The valve shaft of the air valve for the traditional variable air volume air conditioning device is usually arranged in two sections, and the two sections are respectively positioned, so that the centrifugal problem is easily caused, a series of problems such as leaping up are caused, and the installation process is also complex.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve or at least alleviate the problem that exists among the prior art.

In one aspect, a damper assembly is provided, comprising:

a valve shaft having a first pin and a second pin protruding outward from an outer circumferential surface thereof at an axial first position and an axial second position thereof, respectively;

the opposite side walls of the pipeline-shaped valve body are respectively provided with a first side wall through hole and a second side wall through hole which allow the first pin to pass through, and the inner surface of the pipeline-shaped valve body is provided with a first limiting structure;

the first bearing and the second bearing are respectively arranged on the outer sides of the opposite side walls of the pipeline-shaped valve body and are respectively provided with a first bearing through hole corresponding to the first side wall through hole and a second bearing through hole corresponding to the second side wall through hole so as to allow the first pin to pass through the first bearing and the second bearing, and at least one of the first bearing and the second bearing is provided with a second limiting structure; and

the air valve plate is arranged on the valve shaft and positioned in the pipeline-shaped valve body, the air valve plate can be driven by the valve shaft and can rotate between a full-open position and a closed position relative to the pipeline-shaped valve body under the action of the first limiting structure and the second limiting structure,

wherein, the air valve piece is in rotatory in-process, first pin with the second pin respectively with first bearing with the second bearing cooperation to be prevented respectively from following first bearing via hole and the second bearing via hole deviate from.

Optionally, in the damper assembly, the first bearing via, the first sidewall via, the second sidewall via, and the second bearing via are in substantially aligned positions and each have a shape that substantially conforms to a cross-sectional shape of the valve shaft at a location of the first pin.

Optionally, in the air valve assembly, when the air valve flap rotates between the fully open position and the closed position, the valve shaft avoids its installation position, and in the installation position of the valve shaft, the first pin and the second pin substantially coincide with the first bearing via hole, the first sidewall via hole, the second sidewall via hole, and the second bearing via hole.

Optionally, in the air valve assembly, the first limiting structure includes a first sealing strip and a second sealing strip which are respectively and approximately extended along the circumferential direction and are respectively half of the circumference and half of the circumference, the first sealing strip and the second sealing strip are axially separated by an axial distance to generate an axial gap, and a circumferential distance is respectively separated between a circumferential first end of the first sealing strip and a circumferential first end of the second sealing strip and between a circumferential second end of the first sealing strip and a circumferential second end of the second sealing strip to generate a circumferential gap.

Optionally, in the air valve assembly, in the fully open position, the air valve plate is located in the circumferential gap; and when the air valve plate is in the closed position, the air valve plate is positioned in the axial gap.

Optionally, in the air valve assembly, when the air valve plate is in the closed position, the first limiting structure plays a role in sealing between the air valve plate and the inner surface of the tubular valve body.

Optionally, in the air valve assembly, the second limit structure includes a stop limit portion formed on at least one of the first bearing and the second bearing, and in the full-open position, the stop limit portion may stop the first pin or the second pin abutting against the stop limit portion from further rotating.

Optionally, the air valve assembly further comprises an actuator, and the actuator drives the valve shaft to drive the air valve plate to rotate between the fully-opened position and the closed position.

Optionally, the air valve assembly further comprises:

the air speed sensor can be mounted in the valve body at a position close to the air inlet;

a case for accommodating at least a portion of the valve body where the valve shaft is attached; and

and the electric cabinet is arranged on the outer side of the box body, and the actuator is arranged in the electric cabinet.

In another aspect, a variable air volume air conditioner is provided, which comprises the air valve assembly as described above.

According to the utility model discloses an air valve subassembly adopts the integral type valve shaft, easily installs, still can prevent leaping up through structural design.

Drawings

The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. It is to be understood by one of ordinary skill in the art that these drawings are for illustrative purposes only and are not intended as a definition of the limits of the invention. Moreover, like reference numerals are used to denote like parts throughout the figures, wherein:

fig. 1 is an exploded perspective view of an air valve assembly for a variable air volume air conditioning system according to an embodiment of the present invention, wherein a valve shaft and an air valve plate are in an assembled state;

FIG. 2 is a schematic perspective view of the valve shaft, damper flap and positive seal structure on the inner surface of the valve body of the damper assembly of FIG. 1, with the damper flap in a closed position relative to the valve body, and the damper flap and positive seal structure within the valve body shown in phantom;

FIG. 3 is a front view of the damper assembly of FIG. 1 with the valve shaft, bearing and damper flap mounted to the valve body;

FIG. 4 shows the positional relationship between the pin on the valve shaft and the mounting aperture of the valve body top bearing when the valve shaft is in the installed position;

FIG. 5 is an enlarged view of the valve body top bearing of FIG. 4 and the position of the pin therein;

FIG. 6 shows the position relationship between the pin on the valve shaft and the mounting hole of the bearing at the top of the valve body when the valve shaft is rotated by a certain angle to mount the air flap on the valve shaft after the valve shaft sequentially passes through the bearings at the top and bottom of the valve body, and the air flap is at the fully open position;

FIG. 7 shows the position relationship between the pin on the valve shaft and the mounting hole of the bearing at the top of the valve body when the damper plate mounted on the valve shaft is in the closed position; and

fig. 8 is a schematic sectional view taken along the line a-a in fig. 7.

Detailed Description

Some embodiments of the invention will be described in more detail below with reference to the accompanying drawings. Unless clearly defined otherwise herein, the meaning of scientific and technical terms used herein is that which is commonly understood by one of ordinary skill in the art.

In the claims and the description of the present invention, the terms top, bottom, front, rear and the like are used as terms of orientation in the drawings, and they are relative terms and thus can be changed according to different positions and different practical positions. These and other directional terms should not be construed as limiting terms.

Fig. 1-8 show an air valve assembly 1 for a variable air volume air conditioning system according to an embodiment of the present invention. The damper assembly 1 includes a valve body 10 in the form of a hollow conduit that allows fluid to flow therethrough, for example, in the illustrated embodiment, the valve body 10 is a cylindrical conduit structure having an axial direction and a circumferential direction. The air valve assembly 1 further comprises a valve shaft 11 mountable through the valve body 10, and an air valve flap 12 mounted on the valve shaft 11. The valve shaft 11 has an axial direction, and a first pin 111 and a second pin 112 protrude outward from an outer peripheral surface thereof at an axial first position and an axial second position, respectively. The first pin 111 and the second pin 112 may have the same cross-sectional shape in a direction perpendicular to the valve shaft 11. The air flap 12 may be mounted on a portion of the valve shaft 11 within the valve body 10 after the valve shaft 11 passes through the valve body 10, and specifically, the air flap 12 may be fixed to the valve shaft 11 by a fastener such as a screw 120.

A first side wall through hole and a second side wall through hole (not visible in the drawing) allowing the valve shaft 11 and the first pin 111 thereon to pass therethrough are respectively opened on portions of the valve body 10 through which the valve shaft 11 passes, that is, the opposite side walls 101 and 102 of the valve body 10, a first bearing 131 and a second bearing 132 are further respectively installed outside the opposite side walls (such as the top wall and the bottom wall) 101, 102, and a first bearing through hole 1310 and a second bearing through hole (not visible in the drawing) corresponding to the first side wall through hole and the second side wall through hole are respectively opened inside the first bearing 131 and the second bearing 132, and the first bearing through hole 1310 and the second bearing through hole are also configured to allow the valve shaft 11 and the first pin 111 thereon to pass therethrough. When assembled, the first bearing via 1310, the first sidewall via, the second sidewall via, and the second bearing via may be substantially aligned to allow the valve shaft 11 and the first pin 111 thereon to pass therethrough in sequence. The holes may be uniform or different in shape when in the assembled state to allow the valve shaft 11 and the first pin 111 thereon to pass therethrough. In the illustrated embodiment, the bores are substantially identical in shape, e.g., generally conform to the cross-sectional shape of the valve shaft 11 at the location of the first pin 111, but may be sized slightly larger than the cross-sectional dimension. In the illustrated embodiment, the centerline of the bores may intersect the central axis 100 of the valve body 10 after assembly such that the valve shaft 11 may pass through the central axis 100 in a direction perpendicular to the central axis 100.

As shown in fig. 1 and 2, the air flap 12 is a circular sheet with a diameter substantially equal to the inner diameter of the valve body 10, and is rotated by the rotation of the valve shaft 11 between a closed position (shown in fig. 2, 7 and 8) perpendicular to the central axis 100 of the valve body 10 and a fully open position (shown in fig. 6) parallel to the central axis 100 or coincident with the central axis 100. In the closed position, the damper flap 12 prevents fluid from the front intake vent 107 from continuing through the valve body 10 into the rear. In the fully open position, the damper flap 12 is positioned such that fluid from the front inlet 107 may continue through the valve body 10 into the rear.

As shown in fig. 2, 6 and 7, a first limit structure is disposed on an inner surface of the valve body 10, and can limit the rotation of the air valve plate 12. The first limit structure can play a role in sealing, also called limit sealing structure, and the sealing function of the first limit structure is performed in the related parts below. In the illustrated embodiment, the first stop structure comprises first and second sealing strips 103, 104 extending circumferentially about approximately one half and the other half of the circumference, respectively, of the inner surface of the valve body 10. The first sealing strip 103 and the second sealing strip 104 are spaced apart in the axial direction of the valve body 10 by an axial distance to form an axial gap, and the circumferential first end 1031 of the first sealing strip 103 and the second sealing strip 104 are spaced apart by a circumferential distance between the circumferential first ends 1041 and between the circumferential second end (not visible in the drawing) of the first sealing strip 103 and the circumferential second end 1042 of the second sealing strip 104, respectively, to create a circumferential gap. In some embodiments, neither the axial distance nor the circumferential distance is less than the thickness of the damper blade 12. In some embodiments, the first sealing strip 103 and the second sealing strip 104 may be formed of sealing foam.

In addition, a second limit structure is provided on at least one of the first bearing 131 and the second bearing 132, for example, as shown in fig. 5, a stop limit portion 1311 is provided on the first bearing 131. The first limit feature on the inner surface of the valve body 10 and the second limit feature on the first bearing 131 and/or the second bearing 132 may work together to limit the rotation of the damper blade 12 to a suitable angular range, for example, to a range of about 90 degrees. In some embodiments, the first limit structure on the inner surface of the valve body 10 mainly plays a role in limiting and positioning when the valve plate 12 is in the closed position, and the second limit structure on the first bearing 131 and/or the second bearing 132 mainly plays a role in limiting and positioning when the valve plate 12 is in the fully open position, or both functions.

In some embodiments, the damper flap 12 is limited to approximately 90 degrees of rotation between the closed position (shown in fig. 2, 7, and 8) and the fully open position (shown in fig. 6) by the cooperation of the first sealing strip 103, the second sealing strip 104, and the stop limiter 1311. When the air valve plate 12 is in the closed position, the air valve plate is located in an axial gap between the first sealing strip 103 and the second sealing strip 104; in the fully open position, the air valve plate 12 is located in the circumferential gap between the first sealing strip 103 and the second sealing strip 104, and the second pin 112 abuts against the stop limiting portion 1311, that is, the stop limiting portion 1311 stops the second pin 112 from continuing to rotate. Similarly, if the second bearing 132 is provided with a stop limit portion, the first pin 111 abutting against the stop limit portion can be correspondingly stopped from further rotating.

Upon assembly, as shown in fig. 4 and 5, the first pin 111 of the valve shaft 11 may be aligned with and pass through the first bearing via 1310, the first sidewall via, the second sidewall via, and the second bearing via in that order. In this way, the first pin 111 can reach the second bearing 132 outside the side wall 102, while the second pin 112 remains at the first bearing 131 outside the side wall 101 (see fig. 8). The valve shaft 11 and its first 111 and second 112 pins are now in an installation position coinciding with said respective through holes.

Then, the valve shaft 11 is rotated by a certain angle (the angle is not a multiple of 90 degrees), as shown in fig. 6, to rotate the first pin 111 and the second pin 112 to a position that is not completely overlapped with the second bearing through hole and not completely overlapped with the first bearing through hole 1310, i.e., a non-installation position, thereby preventing the first pin 111 from escaping from the second bearing through hole, returning into the valve body 10, and preventing the second pin 112 from escaping from the first bearing through hole 1310, entering into the valve body 10. The air flap 12 is then mounted to the portion of the valve shaft 11 within the valve body 10 using fasteners. In the illustrated embodiment, the air flap 12 may be in the fully open position during the process of mounting the air flap 12 to the valve shaft 11.

Then, the valve shaft 11 is continuously rotated to rotate the air valve plate 12 to the closed position (as shown in fig. 7), at this time, the first sealing strip 103 and the second sealing strip 104 seal the air valve plate 12 in the closed position with respect to the inner surface of the valve body 10, and at the same time, the aforementioned limiting effect on the rotation of the air valve plate 12 is achieved. Through the limiting effect of the first sealing strip 103 and the second sealing strip 104 and the combined action of the stopping limiting part 1311 on the bearing, when the air valve plate 12 rotates between the full-open position and the closed position by about 90 degrees, the valve shaft 11 avoids the installation positions of the first pin 111 and the second pin 112, which coincide with the through holes, so that the anti-dropping effect is realized.

In the above-mentioned assembling process or after the equipment is accomplished, first pin 111 and second pin 112 cooperate with first bearing 131 and second bearing 132 respectively, can transmit the power that valve shaft 11 received to the outer wall of valve body 10 through first bearing 131 at the bottom of valve body 10 and second bearing 132 at the top of valve body 10, have avoided unilateral bearing overload to reduce the product life-span.

Returning to fig. 1, in addition to the above-mentioned components, the air valve assembly 1 may further include a housing 14 for housing at least a portion of the valve body 10 where the valve shaft 11 is mounted. The air valve assembly 1 may further comprise an actuator 15 for driving the valve shaft 11 to rotate the air valve plate 12 between the fully open position and the closed position. The air valve assembly 1 may further include an electrical cabinet 16 for receiving electrical control components such as the actuator 15 therein. In the illustrated embodiment, the electric cabinet is mounted outside the housing 14, such as on top of the housing 14, and the actuator 15 is mounted on top of the housing 14 and within the electric cabinet 16. The air valve assembly 1 may also include an air velocity sensor (not shown) that may be mounted within the valve body 10 proximate to the air intake 107. The wind speed sensor may be connected to an actuator 15 or the like in an electrical cabinet 16 via a hose 18.

Another aspect of the utility model relates to still relate to the variable air volume air conditioning equipment including above-mentioned blast gate subassembly. Based on the above disclosure, those skilled in the art can easily obtain a variable air volume air conditioner including the air valve assembly of the present invention.

The foregoing description of the specific embodiments has been presented only to illustrate the principles of the invention more clearly and therefore show or describe various components clearly in order to make the principles of the invention easier to understand. Various modifications or changes may be readily made by those skilled in the art without departing from the scope of the present invention. It is to be understood that such modifications and variations are intended to be included within the scope of the present invention.

Claims (10)

1. An air valve assembly, comprising:

a valve shaft having a first pin and a second pin protruding outward from an outer circumferential surface thereof at an axial first position and an axial second position thereof, respectively;

the opposite side walls of the pipeline-shaped valve body are respectively provided with a first side wall through hole and a second side wall through hole which allow the first pin to pass through, and the inner surface of the pipeline-shaped valve body is provided with a first limiting structure;

the first bearing and the second bearing are respectively arranged on the outer sides of the opposite side walls of the pipeline-shaped valve body and are respectively provided with a first bearing through hole corresponding to the first side wall through hole and a second bearing through hole corresponding to the second side wall through hole so as to allow the first pin to pass through the first bearing and the second bearing, and at least one of the first bearing and the second bearing is provided with a second limiting structure; and

the air valve plate is arranged on the valve shaft and positioned in the pipeline-shaped valve body, the air valve plate can be driven by the valve shaft and can rotate between a full-open position and a closed position relative to the pipeline-shaped valve body under the action of the first limiting structure and the second limiting structure,

wherein, the air valve piece is in rotatory in-process, first pin with the second pin respectively with first bearing with the second bearing cooperation to be prevented respectively from following first bearing via hole and the second bearing via hole deviate from.

2. The damper assembly of claim 1, wherein the first bearing via, the first sidewall via, the second sidewall via, and the second bearing via are in substantially aligned positions and each have a shape that substantially conforms to a cross-sectional shape of the valve shaft at a location of the first pin.

3. The air valve assembly of claim 1, wherein the valve shaft is out of the way of its installed position as the air valve flap rotates between the fully open position and the closed position, the first and second pins substantially coinciding with the first, second, and second bearing bores in the installed position of the valve shaft.

4. The damper assembly of claim 1, wherein the first stop structure comprises first and second sealing strips circumferentially extending about one half and the other half of the circumference, respectively, on the inner surface of the tubular valve body, the first and second sealing strips being spaced apart an axial distance in the axial direction of the tubular valve body to create an axial gap, and a circumferential distance being respectively spaced apart between the first circumferential end of the first sealing strip and the first circumferential end of the second sealing strip and between the second circumferential end of the first sealing strip and the second circumferential end of the second sealing strip to create a circumferential gap.

5. The air valve assembly of claim 4, wherein in the fully open position, the air valve flap is positioned within the circumferential gap; and when the air valve plate is in the closed position, the air valve plate is positioned in the axial gap.

6. The damper assembly of claim 4, wherein the first retention structure seals between the damper flap and the inner surface of the tubular valve body when the damper flap is in the closed position.

7. The blast gate assembly of claim 1, wherein the second stop structure comprises a stop limit formed on at least one of the first bearing and the second bearing, the stop limit blocking further rotation of the first pin or the second pin against which it abuts when in the fully open position.

8. The air valve assembly of claim 1, further comprising an actuator that drives the valve shaft to rotate the air vane between the fully open position and the closed position.

9. The blast gate assembly of claim 8, further comprising:

the air speed sensor can be mounted in the valve body at a position close to the air inlet;

a case for accommodating at least a portion of the valve body where the valve shaft is attached; and

and the electric cabinet is arranged on the outer side of the box body, and the actuator is arranged in the electric cabinet.

10. A variable air volume air conditioning unit characterised in that it comprises an air flap assembly according to any one of claims 1 to 9.

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