JPH01109115A - Air conditioning device - Google Patents

Abstract

PURPOSE:To reduce a flow resistance at a ventilation passage at what is provided with a partition forming a damper room, at a duct housing a heater, by making the partition that of such structure as to reduce gradually the cross sectional area of the damper room from the end part on a duct connection side toward the direction of a down stream. CONSTITUTION:An air conditioning device has the 1st duct 3 connected to the discharge opening 24 of a ventilator 2 having inner air and outer air introduction openings 22, 23, and the 2nd duct 4 which is connected with this duct 3 and is a blowoff opening changeover box, and a heater 45 of a thermal water type is housed at the 2nd duct 4. Also, a partition 5 forming a damper room 52 is provided in a body on the inside of a connecting portion 42 where the 2nd duct 4 and the 1st duct 3 are connected. In this instance, the partition 5 is formed in such a tapered shape that the cross sectional area of the damper room 52 is gradually reduced from the 1st duct side end portion 42a of the connecting portion 42 toward the down stream side of the damper room 52. As a result, the cross sectional area of a ventilation passage 11 within the duct 3 is made to be capable of being formed large, and the reduction of a flow resistance is contrived.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to an air conditioner, for example, an iV! This is suitable for use in a ventilation duct connection structure that accommodates and connects A.

[Prior Art] Conventionally, the automatic heavy-duty air heating system 11100 has been equipped with an air blower 11110 housing a fan 101, as shown in FIG.
A first duct 120 housing a cooler 121 and a second duct 130 housing a heater 131 are connected to each other.

As a method of connecting these, conventionally, a band 141 is used to connect the connection part 112 of the ventilation @ 110 and the first duct 12.
0 connection part 122, and 7fi of the first duct 120
Method of connecting the notebook part 123 and the connecting part 133 of the second duct 130 with the band 142, and the blower 110 installed next to it
a connecting portion 112 of the first duct 120 and a connecting portion 122 of the first duct 120,
Another method is to fit the connecting portion 123 of the first duct 120 and the connecting portion 133 of the second duct 130 through a sealing material (Utility Model Publication No. 55-3409).
0 Publication, Utility Model Publication No. 56-15054, etc.).

[Problems to be Solved by the Invention] Here, the conditioned air passing through the heater 131 and the heater 13
In order to make the air mix damper 151 more compact, the air mix damper 151 is moved downstream from the end 134 of the connecting portion 133 into the damper room, as shown in FIG. In the case where a tapered partition wall 150 whose cross-sectional area 152 is gradually reduced is provided, the air from the air blower 9110 needs to pass through the ventilation path 160 having the length indicated by the length.

However, this first duct 120 has a distance of 1lIltl from the cooler 121 to the upstream of the band 142.
Since the cross-sectional area of 60 suddenly decreases from B to A, the ventilation duct 160
Flow resistance suddenly increases. Therefore, in this air conditioner 100, it was necessary to employ a large-capacity fan 101 in order to obtain a predetermined amount of air.

SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner that can reduce the flow resistance of an air passage, increase the amount of air blown, or use a small capacity air blowing means.

[Means for Solving the Problems] The air conditioner of the present invention includes a first duct, a second duct connected downstream of the first duct and housing a heater, and The second duct has a blower that guides the conditioned air, and the second duct has a blower that is connected to the first duct upstream. ! A cylindrical connecting part is provided to be dried, and one outlet that partitions an upstream side and a downstream side and guides air to the heater, which is selectively opened and closed by an air mix damper, and the heater. In the air conditioner, the partition wall is provided with a partition wall forming a damper room having a damper room having a damper room and an outflow port for bypassing the damper room. A configuration was adopted in which the cross-sectional area of the damper room was gradually reduced.

[Function] The air conditioner of the present invention has the following function due to the above configuration.

The cross-sectional area of the damper room is gradually reduced in the downstream direction from the first duct side end of the connecting portion of the second duct to reduce the flow resistance of the ventilation path from the first duct ventilation path to the damper room. .

[Effects of the Invention] The air conditioner of the present invention has the following effects due to the above configuration and operation.

Since the flow resistance of the ventilation path can be reduced, the noise of the first duct and the second duct can be reduced, and the fluid resistance of the air blowing can also be reduced, and the air blowing φ in the ventilation path can be increased or By employing a capacity air blowing means, a predetermined amount of air can be obtained.

[Example] Embodiments of the air conditioner of the present invention will be described based on the drawings.

FIG. 1 shows an air conditioner for an e-vehicle to which a first embodiment of the present invention is applied.

1 shows an air conditioning system 4 for an automobile.

The air conditioner 1 includes a resin blower 12, a resin first duct 3 connected to the blower 2, and a resin second duct 1 connected to the first duct 3. -4, and a tapered partition wall 5 provided in the second duct 4, and the inside is provided with a passage of cold or hot air 1! It is considered to be alpha route 11. 6
is the connection part 21 of the ventilation type 2 and the connection part 3 of the first duct 3
1 shows a band that connects the blower 2 and the first duct 3. 7 shows the connecting part 32 of the first duct 3 and the connecting part 42 of the second duct]-4. The band that connects the first duct 3 and the second duct 1-4 is not shown since it has not been tightened.

The blower 2 integrally forms a cylindrical connecting part 21 connected to the first duct 3 on the downstream side, an inside air inlet 22 that takes in air from inside the vehicle interior, and an outside air inlet that takes in air from outside the room. An inlet 23 and an outlet 24 communicating with the first duct l-3
is provided. Moreover, an outside air 1 moss damper 25 is pivotally supported on the ventilation Ig 12 in order to selectively open and close the inside air inlet 22 and the outside air inlet 23. moreover,
Send it! Inside the 1iIl 2, a fan motor 26, which is a blower for introducing outside air or inside air into the first duct 3 and the second duct 4, and a fan 21 driven by the fan motor 26 are arranged.

The first duct 3 is integrally provided with a cylindrical connecting part 31 connected to the blower 2 on the upstream side, and a cylindrical connecting part 32 connected to the second duct 4 on the downstream side. It is integrated. Further, the first duct 3 has an inlet portion 33 communicating with the discharge port 24 of the blower 2, and an outlet portion 34 communicating with the second duct 4. The outlet $34 is formed so that the cross-sectional area of the ventilation passage 11 is smaller than the cross-sectional area of the ventilation passage 11 of the storage section 36 of the cooler 35 of the cooler unit.

The second duct 4 is an air outlet switching box, and has a cylindrical connecting portion 4 connected to the connecting portion 31 of the first duct 3 on the upstream side.
2 are integrally provided, and the inlet portion 43 is connected to the first duct 3.
The outlet portions 44a, 44b, 44
G communicates with each air outlet into the vehicle interior. Further, the second duct 4 houses therein a heater 45 of a hot water type heater that uses engine cooling water as a heat source. The outlet portion 44a is
It communicates with the defrost outlet and is opened by the damper 46a.
be done. The outlet portion 44b communicates with the pendeletion air outlet and is opened and closed by a damper 46b. The outlet portion 44c communicates with the foot outlet and is opened and closed by a damper 46C.

The partition wall 5 partitions the upstream side and the downstream side, forms a damper room 52 that makes the air mix damper 51 more compact and reduces the operating space of the air mix damper 51, and connects the second duct 4. It is provided integrally inside the section 42.

The partition wall 5 is selectively connected to the heater 45 by an air mix damper 51, and the first duct side end 4 of the connecting portion 42
The cross-sectional area of the damper room 52 gradually decreases from 2a toward the downstream direction of the damper room 52. The air mix damper 51 selectively selects the distribution ratio of cold air between one outlet 53 that guides air to the heater 45 and the other outlet 54 that bypasses the heater 45. The damper room 52 is pivoted to the downstream wall of the damper room 52 for adjustment. The cold air flowing out from one outlet 53 passes through the heater 45 and is directed to the outlets 44a, 44b, 44c of the second duct 4,
The air flowing out from the other outlet 54 is directed toward the outlet portions 44a, 44b, and 44c of the second duct 4 for direct use.

The operation of the air conditioner 1 of this embodiment will be explained based on the drawings.

The main switch (not shown) of the air conditioner 1 is turned on, the fan motor 26 is turned on, and the fan 27 is driven.

An inside/outside air switching lever (not shown) drives the inside/outside air switching damper 25 to switch between inside air, outside air, or inside/outside air, and introduces air through the inside air inlet 22 or the outside air inlet 23.

For example, internal air discharged by the fan 27 flows into the inlet portion 33 of the first duct 3 from the discharge port 24 of the blower 2, and is cooled by the cooler 35 when the cooling unit is operating. The air that has passed through the cooler 35 and has been heat exchanged passes through the ventilation path 11, flows out from the outlet section 34, flows into the inlet section 43 of the second duct 4, and passes through the air mix damper 51 to the most downstream wall. The water flows into a damper room 52 which is pivotally connected to the wall.

Here, the ventilation passage 11 runs from the cooling 335 to the damper room 5.
The cross-sectional area of the ventilation passage 11 with length L to the entrance of No. 2 is from B to A.
In order to gradually reduce the flow resistance, a partition wall 5 is provided inside the connecting part 42 of the second duct 4, and the flow resistance is gradually decreased from the first duct side end 42a of the connecting part 42 of the second duct 4. The cross-sectional area of the damper room 52 gradually decreases toward the downstream direction of the damper room 52.

Therefore, the cross-sectional area of the ventilation passage 11 is formed to be large, so that the flow resistance is reduced, and the generation of noise from the first duct 3 and the second duct 4 is suppressed. Therefore, the air flow resistance is reduced, and the amount of air blown can be increased compared to the conventional one, or a predetermined amount of air can be obtained by using a small capacity fan 27.

In addition, since the first duct 3 and the second duct 4 of this embodiment have a structure 'c' in which they are connected by the band 7, the first duct 3 and the second duct 4 have a mounting cost of the band 1 (main In the example, a connection part) is required. therefore,
As in this embodiment, the first part of the connecting part 42 of the second duct 4
When the partition wall 5 is provided so as to extend from the duct-side end 42a toward the downstream direction of the ventilation passage 11, a sufficient mounting allowance for the band 7 can be obtained.

The air mix damper 51 causes the air to flow out from one outlet 53 or the other outlet 54, and the outlet portion 44a144b
, 44C, and is blown out into the interior of the vehicle from one of the defrost outlet, ventilation outlet, and footwell outlet.

FIGS. 2 and 3 show an air conditioner for an automobile to which a second embodiment of the present invention is applied.

(Identical to the first embodiment - functional objects are given the same numbers) The partition wall 8 integrally provided in the second duct 4 is connected to the first
The cross-sectional area of the damper room 82 gradually decreases from the duct side end 42a toward the downstream direction of the damper room 82, and the ventilation passage 11 is formed by the partition wall 8 over a length L.
Gradually reduce the cross-sectional area from B to 8. In addition, damper room 82
is provided with an outlet 83 on one side and an outlet 84 on the other side. Furthermore, the (side) of the air mix damper 81
The inlet portion 43 of the second duct 4 is open in the axial direction, and the air mix damper 81 introduces air from the axial direction.

[Similar Embodiment] In this embodiment, the partition wall is provided integrally with the second duct, but the partition wall may be provided separately in the second duct.

In this embodiment, the cooler of the cooling unit is housed in the first duct, but the indoor heat exchanger of the heat pump air-conditioning system is also housed in the first duct, which is used as an evaporator during cooling and as a condenser during heating. It may be stored or the cooler may not be provided in the first duct.

In this embodiment, the connecting portion of the first duct and the connecting portion of the second duct are connected by tightening with a band, but the connecting portion of the first duct and the connecting portion of the second duct are It may be inserted into the connection part of the second duct into the connection part of the first duct, and the connection part of the first duct may be inserted into the connection part of the second duct. May be combined,
Various modifications may be made to the bonding method without departing from the invention. Similarly, the coupling method for coupling the sending sex and the first duct can be changed in various ways.

In this example, the air conditioner of the present invention was used as an air conditioner for an automobile, but the air conditioner of the present invention may also be used as an air conditioner for other vehicles, ships, houses, etc. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an air conditioner for an automobile adopted in the first embodiment of the air conditioner of the present invention, and FIGS. 2 and 3 are adopted in the second embodiment of the air conditioner of the present invention. FIG. 4 is a cross-sectional view of a conventional air conditioner. In the diagram

Claims (1)

[Claims] 1) A first duct, a second duct connected downstream of the first duct and housing a heater, and a blower that guides conditioned air into these ducts. , The second duct is provided with a cylindrical connecting part connected to the first duct on the upstream side, partitions the upstream side and the downstream side, and selectively uses an air mix damper. In the air conditioner, the partition wall is provided with a partition wall forming a damper room having one outlet that guides air to the heater that is opened and closed, and the other outlet that bypasses the heater. The first of the connecting parts of the second duct
An air conditioner characterized in that the cross-sectional area of the damper room gradually decreases from the duct side end toward the downstream direction.