JP2006224881A - Door type damper and air conditioner using this - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door type damper and an air conditioner using the same, with less circulation resistance at opening of a flow passage, hardly generating noise. <P>SOLUTION: In the air conditioner having a case formed with the flow passage 3 at the inside, an air mix damper 13 is provided in the flow passage 3. The air mix damper 13 is constituted such that it has a damper body 13a; and an approximately cylindrical bearing member 13b for supporting the damper body 13a so as to enable pivoting around one axis and movement in the one axis direction. The flow passage 3 is constituted such that it has a damper upstream part 3a stored with the damper body 13a and allowing pivoting action of the damper body 13a; and a damper downstream part 3b having a reduced flow passage cross section area than the damper upstream part 3a. Of an inner wall surface of the flow passage 3, a border part of the damper upstream part 3a and the damper downstream part 3b is made to an abutting part R for receiving a peripheral edge 13c of the damper body 13a at closing of the flow passage 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a door type damper that opens and closes a flow path, and an air conditioner using the same.

As an air conditioner, for example, as in a vehicle air conditioner, by controlling the flow direction and flow rate of conditioned air in a flow path provided inside, it can be applied to a plurality of indoor areas. Some of them can supply conditioned air at different temperatures to individually adjust the ambient temperature in each region.
As such an air conditioner, for example, there is a vehicle air conditioner described in Patent Document 1 described later. This vehicle air conditioner uses a door (door type damper) for control of the flow direction and flow rate of conditioned air in the ventilation path (flow path).
Further, this vehicle air conditioner has a projection on the inner wall surface of the ventilation path, and the projection constitutes a door seal surface that seals between the inner wall surface and the door.

JP 2002-337535 A (paragraph [0083] and FIG. 16 (a))

  However, when the protrusion is provided on the inner wall surface of the ventilation path, the flow passage cross-sectional area changes rapidly in the vicinity of the protrusion, and therefore the fluid flowing in the ventilation path around the protrusion is separated. As the fluid is peeled in this way, the flow resistance increases, and it may be difficult to obtain a sufficient air volume. Further, such separation of the fluid causes noise.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a door-type damper that has a low flow resistance when a flow path is open and that hardly generates noise, and an air conditioner using the same. And

In order to solve the above problems, the door type damper of the present invention and the air conditioner using the same adopt the following means.
That is, the door type damper according to the present invention is a door type damper that opens and closes the flow path by a damper main body that is provided so as to be able to swing around a single axis in a flow path through which a fluid flows. The path has a damper upstream portion in which the damper main body is housed and the swinging motion of the damper main body is allowed, and a damper downstream portion in which a flow passage cross-sectional area is reduced from the damper upstream portion, Of the inner wall surface of the flow path, a boundary portion between the damper upstream portion and the damper downstream portion is a contact portion that receives a peripheral edge portion of the damper main body when the flow path is closed.

  In the door type damper configured as described above, the damper main body is swung toward the boundary portion between the damper upstream portion and the damper downstream portion, and the peripheral portion of the damper body is the boundary portion between the damper upstream portion and the damper downstream portion. The flow path is closed by contacting the contact part.

In this door type damper, the cross-sectional area of the flow path in the downstream portion of the damper is smaller than the cross-sectional area of the flow path in the upstream portion of the damper that houses the damper main body. In other words, in this door type damper, the inner wall surface of the damper downstream portion is located closer to the main stream side (channel center side) of the flow channel than the inner wall surface of the damper upstream portion.
Therefore, in this door type damper, the fluid flowing in the vicinity of the inner wall surface of the damper upstream portion does not stay in the vicinity of the boundary portion immediately after passing through the boundary portion between the damper upstream portion and the damper downstream portion. It flows along the inner wall surface of the damper downstream part.
That is, in this door type damper, the fluid is hardly separated in the flow path, so that the flow resistance when the flow path is opened is small and noise is hardly generated.

Here, since the maximum flow rate of the fluid that can flow through the flow path is defined by the cross-sectional area of the flow path in the narrowest part of the flow path, the door-type damper according to the present invention also has a conventional flow path. A flow rate comparable to that of a damper provided with a projection for receiving the damper main body can be secured.
In this door type damper, by gradually increasing the cross-sectional area of the channel cross-sectional area downstream of the damper downstream portion, the channel cross-sectional area can be increased without impairing the above effects.

  Further, in this door type damper, at the boundary portion between the damper upstream portion and the damper downstream portion, the inner wall surface of the flow path may be an inclined surface that faces the mainstream side of the flow path as it goes downstream. .

In the door-type damper configured in this way, the inner wall surface of the flow path that forms the boundary portion between the damper upstream portion and the damper downstream portion forms an inclined surface, and therefore, at the boundary portion between the damper upstream portion and the damper downstream portion. The fluid is more difficult to peel off.
In addition, since the boundary portion between the damper upstream portion and the damper downstream portion forms an inclined surface in this way, the contact portion formed by the boundary portion and the peripheral edge portion of the damper main body are in line contact. In other words, the contact area between the periphery of the damper main body and the contact portion is small, and the force that presses the damper main body against the contact portion concentrates on these contact portions, so the contact pressure between the damper main body and the contact portion is increased. The sealability of the flow path by the damper main body can be improved.

Moreover, in this door type damper, since the force which presses a damper main body against a contact part concentrates as mentioned above, the force required in order to drive a damper main body may be small. For example, in this door type damper, when a seal material is provided at the periphery of the damper main body, the seal material and the contact portion are in line contact and high pressure is applied to the seal material. The driving force to be applied to the damper main body may be small in order to ensure the same compressibility (that is, the sealing performance) of the sealing material equivalent to the configuration in which the two are in surface contact.
In this door type damper, the driving force when the damper compresses the contact portion in this way can be reduced.

Further, in the conventional door type damper, when the portion on the swing shaft side of the damper main body first comes into contact with the seal surface (contact portion) when the flow path is closed, the side away from the swing shaft (tip) Side) does not sufficiently abut against the protrusions, and the sealing performance is reduced. Conventionally, the swing surface from the side where the seal surface receives the front end side of the damper body so that each part of the damper body abuts against the abutment portion at the same time. It is made to incline downstream as it goes to the side. However, in this configuration, the contact pressure on the seal surface is low at the portion of the damper main body on the oscillating shaft side, so that the sealing performance may be insufficient.
On the other hand, in the door type damper according to the present invention, the contact pressure between the damper main body and the abutting portion can be increased as described above. Since the inclination angle toward the shaft side can be reduced and the contact pressure to the contact portion can be ensured over the entire damper body, the sealability of the flow path by the damper body is high.

  Moreover, in this door type damper, the surface which receives the said contact part among the peripheral parts of the said damper main body may be made into the inclined surface which protrudes as it goes to the said damper main body inner side from the said peripheral part.

In the door type damper configured in this way, the surface that receives the contact portion at the peripheral portion of the damper body is an inclined surface. Therefore, when the flow path is closed, the peripheral portion is the corner portion of the contact portion (upstream of the damper). Line contact with the corners forming the boundary between the part and the damper downstream part.
Thereby, the force which presses a damper main body to a contact part can be concentrated, and the sealing performance of the flow path by a damper main body can be improved. In addition, since the force required to press the damper main body against the contact portion can be reduced, the pressing torque of the drive device can be reduced.

An air conditioner according to the present invention is an air conditioner having a damper that opens and closes a flow path through which conditioned air flows, and the door type damper according to any one of claims 1 to 3 is used as the damper. ing.

  In this air conditioner, fluid separation in the flow path is unlikely to occur, so that the flow resistance when the flow path is open is small, and noise is hardly generated.

  According to the door type damper and the air conditioner using the same according to the present invention, the fluid is hardly separated in the flow path, so that the flow resistance when the flow path is opened is small and noise is hardly generated.

Embodiments of an air conditioner according to the present invention will be described below with reference to the drawings.
[First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
An air conditioner 1 according to this embodiment is a vehicle air conditioner having a cooling cycle and a heating cycle. As shown in FIG. 1, a case 2 having a flow path 3 through which conditioned air flows is provided. Have.

Although not shown, the case 2 is connected to the upstream end of the flow path 3 with a blower that blows air outside or inside the vehicle compartment, and is opened in the vehicle compartment on the downstream side to blow the blower inside the vehicle compartment. A blower outlet for discharging is provided.
In the present embodiment, the case 2 has a defroster outlet that discharges conditioned air toward the window of the vehicle, a face side outlet that discharges conditioned air toward the upper body of the passenger, A foot-side outlet that discharges conditioned air toward the foot is provided.

  Further, an evaporator 4 constituting a part of the cooling cycle is provided on the upstream side of the flow path 3. The evaporator 4 cools the conditioned air by exchanging heat between the refrigerant flowing through the evaporator 4 and the conditioned air flowing through the flow path 3.

Here, the case 2 is configured such that a flow path 3 is formed inside by combining a driver seat side member constituting the driver seat side and a passenger seat side member constituting the passenger seat side.
The space in the driver seat side member and the space in the passenger seat side member are partitioned by a flat partition plate 5, and the flow path 3 is at least downstream of the evaporator 4, and the driver seat side space. (In FIG. 1, the driver seat side space channel side is illustrated in the inside of the case 2. The passenger seat side space channel. Is formed on the back side of the partition plate 5 in FIG. 1).
Further, each of the air outlets is independently provided in the driver seat side channel and the passenger seat side channel.
Since the driver-seat-side space channel and the passenger-seat-side channel have almost the same configuration, they are collectively referred to as the channel 3 in the following description.

The flow path 3 is provided with a bypass flow path 11 that extends from a downstream position of the evaporator 4 to a further downstream position. On the downstream side of the flow path 3, the conditioned air that has passed through the bypass flow path 11 is provided. The conditioned air in the flow path 3 is mixed again.
A heater 12 that constitutes a part of a heating cycle that uses exhaust heat of a vehicle power source or the like is provided in the bypass channel 11, and the conditioned air flowing in the bypass channel 11 is heated by the heater 12. It has come to be.
Further, in the flow path 3, at the branch point with the bypass flow path 11, the flow rate of the conditioned air flowing through the bypass flow path 11 is controlled by controlling the opening degree of the flow path 3 and the opening degree of the bypass flow path 11. An air mix damper 13 to be controlled is provided.

  That is, the air conditioner 1 operates the air mix damper 13 to control the ratio of the conditioned air heated by the heater 12 in the bypass channel 11 among the conditioned air flowing through the channel 3. The temperature of the conditioned air discharged from each of the outlets is adjusted downstream of the flow path 3.

In the present embodiment, the air mix damper 13 includes a damper main body 13a provided so as to be swingable about one axis perpendicular to the partition plate 5 (about an axis perpendicular to the paper surface of FIG. 1), and the damper main body 13a. It is comprised by the door type damper which has drive devices (not shown), such as a motor which rocks | fluctuates around one axis.
One end of the damper main body 13a is held at a branch point between the flow path 3 and the bypass flow path 11, and the other end can be swung on the upstream side.
The air mix damper 13 is configured such that the damper main body 13a has a position where the flow path 3 is closed (flow path closed position) as shown by a solid line in FIG. 1 and a bypass flow path 11 as shown by a two-dot chain line in FIG. The opening of the flow path 3 and the opening of the bypass flow path 11 are adjusted by moving to an arbitrary position between the position where the inlet is closed (bypass flow path closing position).

In the flow path 3, the vicinity of the branch point with the bypass flow path 11 is a damper upstream portion 3 a in which the damper main body 13 a is accommodated and the swinging motion of the damper main body 13 a is allowed, and a cross-sectional area of the flow path more than the damper upstream portion 3 a. And a damper downstream portion 3b in which is reduced. And the boundary part of the damper upstream part 3a and the damper downstream part 3b is made into the contact part R which receives the peripheral part of the damper main body 13a at the time of obstruction | occlusion of the flow path 3 among the inner wall surfaces of the flow path 3.
Further, in the bypass flow path 11, at least in the vicinity of the boundary portion with the damper upstream portion 3a, the flow passage cross-sectional area is reduced as compared with the damper upstream portion 3a, similarly to the damper downstream portion 3b. Further, the inner wall surface of the boundary portion between the damper upstream portion 3 a and the damper downstream portion 3 b is a contact portion R that receives the peripheral edge portion of the damper main body 13 a when the bypass flow path 11 is closed.

In the flow path 3, the downstream side of the position where the bypass flow path 11 joins is divided into a plurality of branch paths that respectively lead to the respective outlets.
In the present embodiment, the flow path 3 branches into a defroster side flow path 21 that leads to the defroster outlet, a face side path 22 that leads to the face side outlet, and a foot side path 23 that leads to the foot side outlet. Has been.
Here, in the flow path 3, the inlet of the foot side flow path 23 is opened upstream of the inlet of the defroster side flow path 21 and the inlet of the face side flow path 22.

  In the flow path 3, a first mode switching damper 26 that selectively opens the defroster-side flow path 21 and the face-side flow path 22 is provided at a branch point between the defroster-side flow path 21 and the face-side flow path 22. Yes.

  In the present embodiment, the first mode switching damper 26 has a plate-like damper body 26a provided so as to be able to swing around a single axis orthogonal to the partition plate 5, and the damper main body 26a swings around the single axis. It is comprised by the door type damper which has the drive device (not shown) to move.

One end of the damper main body 26a is held at a branch point between the defroster-side flow path 21 and the face-side flow path 22, and the other end can be swung on the upstream side.
The first mode switching damper 26 is configured so that the damper main body 26a has a position where the inlet of the defroster-side flow passage 21 is closed (defroster closed position) as shown by a solid line in FIG. 1 and a two-dot chain line shown in FIG. The defroster side flow path 21 and the face side flow path 22 are selectively opened by being positioned at either one of the positions where the entrance of the face side flow path 22 is closed (face closing position).

  That is, the air conditioner 1 is configured to switch between a mode in which conditioned air is discharged from the defroster outlet and a mode in which conditioned air is discharged from the face-side outlet by operating the first mode switching damper 26. It is said that.

Here, in the defroster-side flow channel 21, the cross-sectional area of the vicinity of the boundary with the damper downstream portion 3b is smaller than that of the damper downstream portion 3b. Further, the inner wall surface of the boundary portion between the damper downstream portion 3b and the defroster channel 21 is a contact portion R that receives the peripheral edge of the damper body 26a when the defroster channel 21 is closed.
Similarly, the cross-sectional area of the channel in the vicinity of the boundary with the damper downstream portion 3b in the face side channel 22 is smaller than that in the damper downstream portion 3b. Further, the inner wall surface of the boundary portion between the damper downstream portion 3 b and the face side flow path 22 is a contact portion R that receives the peripheral edge of the damper main body 26 a when the face side flow path 22 is closed.

  On the other hand, in the damper downstream portion 3b, at the branch point between the foot side channel 23 and the channel 3c downstream of the foot side channel 23 (that is, the inlet of the defroster side channel 21 and the face side channel 22), A second mode switching damper 27 that selectively opens the flow path 3 and the foot side flow path 23 is provided.

  In the present embodiment, the second mode switching damper 27 includes a plate-shaped damper main body 27a provided so as to be swingable around a uniaxial line orthogonal to the partition plate 5, and the damper main body 27a swinging around the uniaxial line. It is comprised by the door type damper which has the drive device (not shown) to move.

One end of the damper main body 27a is held at a branch point between the flow path 3 and the foot-side flow path 23, and the other end can be swung on the upstream side.
The second mode switching damper 27 allows the damper main body 27a to flow as shown by a solid line in FIG. 1 to close the inlet of the foot side flow path 23 (foot closed position) and as shown by a two-dot chain line in FIG. The flow path 3c and the foot-side flow path 23 are selectively opened by moving to either one of the positions (defroster face closed position) for closing the path 3c.

  That is, the air conditioner 1 operates the second mode switching damper 27 to discharge the conditioned air from the defroster outlet or the face side outlet, and the mode of discharging the conditioned air from the foot side outlet. It is set as the structure which switches.

Here, in the foot side flow path 23, the flow path cross-sectional area is reduced in the vicinity of the boundary with the damper downstream part 3b as compared with the damper downstream part 3b. Further, the inner wall surface of the boundary portion between the damper downstream portion 3 b and the foot side flow path 23 is a contact portion R that receives the peripheral edge of the damper main body 27 a when the foot side flow path 23 is closed.
Similarly, the cross-sectional area of the flow path 3c is smaller in the vicinity of the boundary with the damper downstream portion 3b than in the damper downstream portion 3b. Further, the inner wall surface of the boundary portion between the damper downstream portion 3b and the flow path 3c is a contact portion R that receives the peripheral edge of the damper main body 27a when the flow path 3c is closed.

As the air mix damper 13 and the first and second mode switching dampers 26 and 27 described above, the door type damper according to the present invention is used.
Since the basic configuration of the air mix damper 13 and the first and second mode switching dampers 26 and 27 are substantially the same, the detailed configuration of the air mix damper 13 will be described below on behalf of them. .

As shown in FIG. 2, the air mix damper 13 is provided on the damper main body 13 a provided in the damper upstream portion 3 a and the inner wall surface of the flow path 3, and the damper main body 13 a is orthogonal to the surface of the partition plate 5. It has a substantially cylindrical bearing member 13b that supports and swings around the axis and moves in the direction of this one axis.
The damper main body 13a has a rotating shaft 31, and a substantially flat valve body 32 provided on the side surface of the rotating shaft 31 so as to be substantially parallel to the rotating shaft 31, and the rotating shaft 31 is moved by the bearing member 13b. It is held in a state parallel to one axis.

Further, of the peripheral edge portion 13c of the damper main body 13a, the contact portion 13d that receives the contact portion R provided at the boundary portion between the damper upstream portion 3a and the damper downstream portion 3b extends from the peripheral edge portion 13c to the inside of the damper main body 13a. It is set as the inclined surface which protrudes in the thickness direction as it goes. Further, of the peripheral portion 13c, a contact portion 13e that receives the contact portion R formed by the boundary portion between the damper upstream portion 3a and the bypass channel 11 protrudes in the thickness direction from the peripheral portion 13c toward the inside of the damper main body 13a. It is supposed to be an inclined surface. Each of the contact portions 13d and 13e is provided with a seal material S that seals between the contact portions R when the flow path is closed.
Here, in the present embodiment, the connecting portion between the damper upstream portion 3a and the damper downstream portion 3b is constituted by a wall surface W substantially orthogonal to the axis of the flow path 3, as shown in FIGS. A corner vicinity portion which is a boundary portion between the wall surface W and the damper downstream portion 3b is a contact portion R.

  In the air conditioner configured as described above, the damper main body 13a is swung toward the boundary portion between the damper upstream portion 3a and the damper downstream portion 3b, and the peripheral portion 13c of the damper main body 13a is moved to the damper upstream portion 3a and the damper. By making contact with the contact portion R formed by the boundary portion with the downstream portion 3b, the flow path 3 is closed.

In the air mix damper 13, as shown in FIG. 2, the flow passage cross-sectional area of the damper downstream portion 3b is reduced from the flow passage cross-sectional area of the damper upstream portion 3a in which the damper main body 13a is accommodated. In other words, in the air mix damper 13, the inner wall surface of the damper downstream portion 3b is located closer to the main flow side (channel center side) of the flow channel 3 than the inner wall surface of the damper upstream portion 3a.
Therefore, in the air mix damper 13, the fluid flowing in the vicinity of the inner wall surface of the damper upstream portion 3a passes through the boundary portion between the damper upstream portion 3a and the damper downstream portion 3b, as shown in FIG. In addition, it flows promptly along the inner wall surface of the damper downstream portion 3b without staying in the vicinity of the boundary portion.
That is, in the air mix damper 13, the fluid is hardly separated in the flow path 3, so that the flow resistance when the flow path is open is small and noise is hardly generated.

Here, since the maximum flow rate of the fluid that can flow through the flow path 3 is defined by the cross-sectional area of the flow path in the narrowest portion of the flow path 3, the air mix damper 13 also has a flow path as in the conventional case. A flow rate comparable to that of a damper provided with a projection for receiving the damper main body can be secured.
In this air mix damper 13, by gradually increasing the cross-sectional area of the channel cross-sectional area downstream of the damper downstream portion 3b, the channel cross-sectional area can be increased without impairing the above effects. .

The case 2 is manufactured, for example, by injection molding resin or the like. In order to prevent molding defects such as sink marks in the injection-molded product, it is preferable to eliminate the accumulation of meat. However, the partition plate 5 has a driver seat side space on one side and a passenger side space on the other side. Since the surface for forming the working flow path is constituted, it is necessary to make the portion constituting the damper downstream portion 3b hollow and to have the same thickness as the other portions.
Therefore, as shown in FIG. 4, in addition to the mold CD that forms the surface on the driver's seat side flow path side and the mold (not shown) that forms the surface on the passenger seat side space flow path side, the damper downstream By providing a slide core SC that is slidable in a direction substantially orthogonal to the mold opening direction in the region constituting the part 3b and performing injection molding, the damper downstream portion 3b can be removed while enabling mold release after injection molding. It is possible to form the partition plate 5 having a uniform thickness in which the constituent portions 5a are hollow.

Furthermore, in this air conditioner, as described above, the contact portion 13d that receives the contact portion R provided at the boundary portion between the damper upstream portion 3a and the damper downstream portion 3b in the peripheral portion 13c of the damper main body 13a. The contact portions 13e that receive the contact portion R formed by the boundary portion between the damper upstream portion 3a and the bypass flow path 11 are inclined surfaces. Each contact portion R is a substantially right-angled corner as shown in FIGS.
For this reason, when the flow path is closed, the sealing material S and the contact portion R provided on the peripheral portion 13c of the damper main body 13a are in line contact with each other, and a high pressure is applied to the sealing material S. In order to ensure the same compression ratio (that is, sealing performance) of the sealing material S equivalent to the configuration in which the two are in surface contact with each other, the driving force to be applied to the damper main body 13a may be small.
In this air conditioner, since the driving force to be applied to the damper main body 13a is small as described above, the torque of the driving device that presses the damper main body 13a against the contact portion R can be reduced accordingly.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.
The air conditioner according to this embodiment is the same as the air conditioner shown in the first embodiment, but instead of the air mix damper 13 and the first and second mode switching dampers 26 and 27, the air mix damper shown in FIG. 63 and the use of the first and second mode switching dampers.
Since the basic configuration of the air mix damper 63 and the first and second mode switching dampers is substantially the same, the detailed configuration of the air mix damper 63 will be described below as a representative thereof. Hereinafter, in the air-conditioning apparatus shown in the present embodiment, the same or identical members as those in the air-conditioning apparatus shown in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

The air mix damper 63 is the mainstream of the flow path 3 in the air mix damper 13 shown in the first embodiment as the flow path inner wall surface F at the boundary portion between the damper upstream portion 3a and the damper downstream portion 3b moves toward the downstream side. The main feature is that the inclined surface faces the side.
In the air mix damper 63, the damper main body 13a is formed in a plate shape having a uniform thickness including the peripheral edge portion 13c. In addition, the contact portions 13d and 13e of the peripheral portion 13c are provided with a seal material S that seals between the contact portions R when the flow path is closed.

In the air conditioner configured as described above, the flow passage inner wall surface F that forms the boundary portion between the damper upstream portion 3a and the damper downstream portion 3b forms an inclined surface, and as shown in FIG. The fluid flow at the boundary portion between the damper upstream portion 3a and the damper downstream portion 3b becomes smooth, and separation of the fluid at the boundary portion is less likely to occur.
In addition, since the boundary portion between the damper upstream portion 3a and the damper downstream portion 3b forms an inclined surface in this way, the contact portion R formed by the boundary portion and the peripheral portion 13c of the damper main body 13a are in line contact. become. In the present embodiment, the peripheral edge portion 13c comes into contact with the contact portion R at the outer peripheral end thereof, so that they are in line contact.
That is, since the contact area between the peripheral edge portion 13c of the damper main body 13a and the contact portion R is small, and the force pressing the damper main body 13a against the contact portion R is concentrated on these contact portions, the damper main body 13a and the contact portion R And the sealing performance of the flow path 3 by the damper main body 13a can be improved.

Further, in this air conditioner, since the force for pressing the damper main body 13a against the contact portion R is concentrated as described above, the force required to drive the damper main body 13a can be reduced.
In this air conditioner, since the driving force to be applied to the damper main body 13a is small as described above, the torque of the driving device that presses the damper main body 13a against the contact portion R can be reduced accordingly.

Here, although the example which provided the inclined surface in the peripheral part 13c of the damper main body 13a was shown in 1st embodiment, it is not restricted to this, The damper main body 13a is formed in flat form also including a peripheral part. Also good. Moreover, in 2nd embodiment, you may provide an inclined surface in the peripheral part 13c of the damper main body 13a.
Further, the inner wall surface of the damper downstream portion 3b does not need to protrude to the flow channel mainstream side over the entire circumference with respect to the damper upstream portion 3a, and both side portions of the damper main body 13a (peripheral portions excluding the swing end and the fixed end) ) May be protruded, and a rib may be provided in a portion that receives the swing end of the damper main body 13a, and the abutting portion R may be configured by this rib.

It is a longitudinal section showing the composition of the air harmony device concerning a first embodiment of the present invention. It is the figure which looked at the air mix damper (door-type damper) of the air conditioning apparatus concerning 1st embodiment of this invention from the cross section along a flow path, Comprising: (a) is a figure which shows the state at the time of flow path obstruction | occlusion. And (b) is a diagram showing a state when the flow path is opened. FIG. 3 is a partially enlarged view of FIG. It is a figure which shows the manufacturing method of the partition plate of the air conditioning apparatus concerning 1st embodiment of this invention. It is the figure which looked at the air mix damper (door type damper) of the air conditioning apparatus concerning 2nd embodiment of this invention from the cross section along a flow path, Comprising: (a) is a figure which shows the state at the time of flow path obstruction | occlusion. FIG. 4B is a diagram showing a state when the flow path is opened.

Explanation of symbols

3 Channel 3a Damper upstream part 3b Damper downstream part 13 Air mix damper (door damper)
13a Damper body 13c Peripheral part R Contact part

Claims (4)

A door-type damper that opens and closes the flow path by a damper body that is provided to enable swinging around one axis in the flow path through which the fluid flows,
The flow path includes a damper upstream portion in which the damper main body is housed and a swinging operation of the damper main body is allowed,
A damper downstream portion having a flow passage cross-sectional area reduced from the damper upstream portion,
Of the inner wall surface of the flow path, a door type damper in which a boundary portion between the damper upstream portion and the damper downstream portion is a contact portion that receives a peripheral edge portion of the damper main body when the flow path is closed.   2. The door type damper according to claim 1, wherein an inner wall surface of the flow path is an inclined surface toward a main flow side of the flow path toward a downstream side at a boundary portion between the upstream portion of the damper and the downstream portion of the damper.   3. The door damper according to claim 1, wherein a surface that receives the abutting portion of the peripheral portion of the damper main body is an inclined surface that protrudes from the peripheral portion toward the inside of the damper main body. An air conditioner having a damper that opens and closes a flow path through which conditioned air flows,
An air conditioner using the door type damper according to any one of claims 1 to 3 as the damper.

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