Air conditioning blowout device

Abstract

To provide an air conditioning blowout device capable of suppressing a space in an air blowing direction and blowing air widely and uniformly into a vehicle interior.SOLUTION: An air conditioning blowout device 1 comprises a tubular duct (air passage 3) formed in a spiral shape such that the air passage 3 approaches a center as it spirals from an air introduction port 31. The air passage 3 in the spiral shape is formed with an air introduction port 31 that introduces an airflow AF from a tangential direction of the spiral shape toward a direction in which the air passage 3 spirals on an outer side portion in a radial direction RD of the spiral shape, and is formed with a slit-shaped air blowout port 4 so as to spiral along the air passage 3 that spirals on a front wall 25 constituting one side of a bottom surface of a substantially cylindrical shape formed by the air passage 3 in the spiral shape.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The technical field of the present specification relates to an air conditioning blowout device used as an air outlet for ventilation or air conditioning in an automobile interior or the like. [Background technology]

[0002] Conventionally, an air conditioning blower device having a rotatable damper and fins within a housing has been known as an air outlet for ventilation or air conditioning in an automobile cabin, as disclosed in, for example, Patent Document 1 below. The air conditioning blower device described in Patent Document 1 introduces airflow through an air inlet on the rear side of the housing in the air blowing direction, adjusts the airflow volume and direction using the damper and fins, and delivers the adjusted airflow into the automobile cabin from an air outlet on the front side of the housing. For this reason, conventional air conditioning blower devices require space in the air blowing direction. In contrast, Patent Document 2 below proposes an air conditioning blower device that can reduce the space required in the air blowing direction, in which the blowing plane is arranged in the inlet region of the blowing element substantially parallel to the airflow direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-53426 [Patent Document 2] International Publication No. WO2005 / 100062 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the air conditioning blowout device described in Patent Document 2 has a problem in that the airflow tends to flow in a straight line in the direction of the supply passage, making it difficult to blow air widely and uniformly throughout the automobile cabin.

[0005] The problem that the technology of this specification aims to solve has been made in consideration of the above points, and its object is to provide an air conditioning blowing device that can reduce the space required in the air blowing direction and can blow air widely and evenly into the automobile interior. [Means for solving the problem]

[0006] The air conditioning blow-out device according to the embodiment of the present specification is formed in a spiral shape in which a cylindrical ventilation passage approaches the center as it turns, The ventilation passage has an air inlet formed on an outer side in the radial direction of the spiral shape, through which the conditioned air is introduced in a swirling direction from a tangential direction of the spiral shape, The air conditioner is characterized in that a slit-shaped air outlet is formed in a spiral shape along the ventilation passage in a front wall that constitutes the bottom surface on one side of the approximately cylindrical shape formed from the ventilation passage in a spiral shape.

[0007] Here, the front and rear of the air conditioning blower device are defined as the front-rear direction in the axial direction of the approximately cylindrical shape formed by the spiral-shaped ventilation passage, with the front side of the front wall where the air outlets of the ventilation passage are formed being defined as the front, and the other side being defined as the rear. Also, the terms "inside" and "outside" may be used relative to the radial direction of the spiral shape. According to the air conditioning blower device of the embodiment described herein, airflow is introduced through an air inlet on the outer side of the spiral-shaped ventilation passage in the radial direction and blown out through a slit-shaped air outlet formed in the front wall that constitutes the bottom surface of one side of the approximately cylindrical shape formed by the ventilation passage. The air conditioning blower device of the embodiment fits into a spiral shape that approaches the center as the ventilation passage rotates, thereby reducing space required in the airflow direction (axial direction of the spiral shape). Furthermore, the air outlets are formed in a slit shape along the ventilation passage and spirally shaped, and because the ventilation passage rotates in a spiral shape, the airflow flowing through the ventilation passage is blown outward from the spiral-shaped air outlet due to outward centrifugal force. Therefore, the air conditioning blowout device of the embodiment can blow air widely and uniformly into the interior of the automobile.

[0008] In the air-conditioning blower device, the air outlet may be formed along a radially outer side of the spiral shape relative to a transverse center of the ventilation passage of the front wall.

[0009] In this embodiment, the spiral air outlet is formed along the radially outer side of the spiral shape rather than the transverse center of the ventilation passage in the front wall, so that the air flowing through the ventilation passage is subjected to a stronger centrifugal force and is blown outward from the spiral air outlet while spreading outward. As a result, the air conditioning blower device of the embodiment can blow air more widely and uniformly into the automobile cabin.

[0010] In the air-conditioning blow-out device, the air outlet may be formed along the vicinity of a radially outer side wall that defines the ventilation passage.

[0011] This allows the air flowing through the ventilation duct to be subjected to stronger centrifugal force and to be blown outward from the spiral air outlet while spreading outward, thereby allowing air to be blown more widely and uniformly throughout the vehicle interior.

[0012] In the air-conditioning blow-out device, a step portion in the radial direction may be provided between the side wall on the radial outer side of the ventilation passage and the air blow-out port.

[0013] As a result, when the air flowing within the spiral ventilation passage is blown out from the air outlet, it is separated from the side wall by the step portion, and can be spread radially without being blown out along the side wall.

[0014] In the air-conditioning blowout device, a peripheral wall that surrounds the air outlet may be provided in front of the air outlet.

[0015] This makes it possible to adjust the radial spread of the airflow blown out from the air outlet. [Effects of the Invention]

[0016] According to the air-conditioning blow-out device of the present specification, it is possible to reduce the space required in the air-blowing direction, and to blow air widely and uniformly into the interior of the automobile. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a front view of an air conditioning blowout device according to an embodiment. [Figure 2] FIG. [Figure 3] 1A is a perspective view of an air conditioning blower device, and FIG. 1B is a perspective view of a volute member with a cover member removed from the air conditioning blower device. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1 with a partially enlarged view. [Figure 5] 2A is a cross-sectional view taken along line VV in FIG. 1, showing a state where the step dimension of the step portion is 2 mm (A), 0 mm (B), and 8 mm (C). [Figure 6] 6A and 6B are cross-sectional views taken along line VI-VI in FIG. 1, showing a state where the height of the peripheral wall is 8 mm (A), 0 mm (B), and 12 mm (C). [Figure 7] 7A and 7B are cross-sectional views taken along line VII-VII in FIG. 1, showing a state where the width of the air outlet is 3 mm (A), 1 mm (B), and 8 mm (C). DETAILED DESCRIPTION OF THE INVENTION

[0018] An air conditioning blow-out device 1 according to an embodiment of the present specification will be described below with reference to FIGS. 1 to 7. Note that the scope of the present invention is not limited to the scope disclosed in the embodiment. The air conditioning blow-out device 1 according to the embodiment is formed from a cylindrical duct (air passage 3), and as shown in FIGS. 1 and 3(A), the air passage 3 is formed in a spiral shape, in which the air passage 3 approaches the center as it turns from an air inlet 31. The spiral-shaped air passage 3 has an air inlet 31 formed on the outer side in the radial direction RD of the spiral shape, through which an air flow AF is introduced from a tangential direction of the spiral shape in the turning direction of the air passage 3. A slit-shaped air outlet 4 is formed in a front wall 25 constituting one side of the bottom surface of the approximately cylindrical shape formed from the spiral-shaped air passage 3, so as to turn along the turning air passage 3.

[0019] 2 and 3, the direction of the air conditioning blowout device 1 is defined as the front-to-rear direction, with the axial direction of the approximately cylindrical shape formed by the spiral-shaped ventilation channel 3 being the front, and the side of the front wall 25 where the air outlets 4 of the ventilation channel 3 are formed being the front, and the other side (the rear wall 24 side) being the rear. Regarding up, down, left, and right, the side where the ventilation duct VD is connected is defined as the top, and the left and right when viewing the air conditioning blowout device 1 from the front are defined as the left and right. As used in the drawings, F indicates the front, B indicates the rear, U indicates the top, D indicates the bottom, L indicates the left, and R indicates the right. Furthermore, the flow direction of the air flow AF is sometimes expressed as the upstream side toward the air inlet 31 and the downstream side toward the center of the spiral-shaped ventilation channel 3. Furthermore, the radial direction RD of the spiral shape is sometimes expressed as the inside and outside.

[0020] As shown in FIG. 1, the ventilation passage 3 is elongated in the flow direction of the airflow AF and has a spiral shape that approaches the center as it turns. As shown in FIG. 4, the cross section of the ventilation passage 3 in the transverse direction TD is formed to be substantially rectangular. The ventilation passage 3 has an air inlet 31 through which the airflow AF is introduced on the upstream side, and a slit-shaped air outlet 4 is formed in the front wall 25 on the front side along the flow direction of the airflow AF. The ventilation passage 3 is formed so that the periphery is closed except for the air inlet 31 and the air outlet 4 by side walls 23 on both sides (upper and lower sides (left and right sides)) in the radial direction RD, a rear wall 24 on the rear side, and a front wall 25 on the front side. Because the cross section of the ventilation passage 3 in the transverse direction TD is formed to be substantially rectangular and the ventilation passage 3 is formed to be spiral-shaped, when the ventilation passage 3 turns inward and makes a full revolution, the side wall 23 on the outside in the radial direction RD forms the side wall 23 on the inside in the radial direction RD of the ventilation passage 3 on the outside of the full revolution, as shown in FIG. 3(B).

[0021] The air outlet 4 is formed in the front wall 25 that forms the ventilation passage 3, along the swirling direction of the airflow AF in the ventilation passage 3. As shown in FIG. 4 , the air outlet 4 is formed along the longitudinal direction of the ventilation passage 3, along the outer side of the center TC of the ventilation passage 3 in the transverse direction TD of the ventilation passage 3 in the radial direction RD of the spiral shape. Because the ventilation passage 3 is formed in a spiral shape that approaches the center as it swirls, centrifugal force is applied to the outer side of the spiral shape in the radial direction RD of the airflow AF flowing through the ventilation passage 3, and when it is blown out from the air outlet 4, the centrifugal force causes it to be blown outward in the radial direction RD. Therefore, the air conditioning blower device 1 of the embodiment can blow air widely outward in the radial direction RD. In other words, the air conditioning blower device 1 of the embodiment can blow air widely outward (in the up, down, left, and right directions) of the air conditioning blower device 1.

[0022] As shown in FIGS. 1 to 3A and 4, a peripheral wall 41 that surrounds the air outlet 4 is provided in front of the air outlet 4. The peripheral wall 41 makes it possible to adjust the spread of the airflow AF blown out from the air outlet 4 in the radial direction RD. If the peripheral wall 41 were not provided, as shown in FIG. 6B, the airflow AF blown out from the ventilation passage 3 would flow straight forward without its blowing direction being adjusted, and it would not be possible to blow the air in a spread manner in the radial direction RD. On the other hand, by providing the peripheral wall 41, the blowing direction of the airflow AF blown out from the ventilation passage 3 can be adjusted and the airflow can be blown out in a spread manner in the radial direction RD, as shown in FIG. 6A.

[0023] As shown in the partially enlarged view of Fig. 4, a step 26 is provided in the radial direction RD between the air outlet 4 and the side wall 23 on the outside of the ventilation passage 3. If the step 26 were not provided, as shown in Fig. 5(B), the airflow AF blown out from the ventilation passage 3 would be pulled by the side wall 23 and the peripheral wall 41 and would flow straight forward along the side wall 23 and the peripheral wall 41, and would not be able to be spread out in the radial direction RD for airflow. On the other hand, by providing the step 26, as shown in Fig. 5(A), the airflow AF blown out from the ventilation passage 3 can be separated from the side wall 23 and the peripheral wall 41 and spread out in the radial direction RD for airflow.

[0024] 7, the outlet width OW in the short side direction of the slit-shaped air outlet 4 can be adjusted. By adjusting the outlet width OW, the spread of the airflow AF blown out from the air outlet 4 in the radial direction RD can be adjusted.

[0025] The length of the inside of the ventilation passage 3 in the transverse direction TD (radial direction RD) is 45 mm (preferably 40 to 60 mm), and the length in the front-rear direction is 60 mm (preferably 50 to 65 mm) (cross-sectional area is 2700 mm 2 (Preferably, 2000 to 3900 mm 2 When the above-mentioned steps are set, the step dimension SD of the step portion 26, the peripheral wall height WH of the peripheral wall 41, and the outlet width OW of the air outlet 4 can be set as follows.

[0026] The step dimension SD of the step portion 26 can be set to 0.5 to 5 mm. This is because, as shown in FIG. 5(A), the airflow AF can be spread in the radial direction RD and blown out. If the step dimension SD is less than 0.5 mm, as shown in FIG. 5(B), the airflow AF blown out from the ventilation passage 3 is pulled by the side wall 23 and the peripheral wall 41, flows along the side wall 23 and the peripheral wall 41, and flows straight forward, which may prevent the airflow from being spread in the radial direction RD and blown out. On the other hand, if the step dimension SD is more than 5 mm, as shown in FIG. 5(C), the air outlet 4 is shifted toward the center TC in the transverse direction TD (see FIG. 4), which weakens the centrifugal force of the airflow AF blown out from the ventilation passage 3 and may prevent the airflow from being spread in the radial direction RD and blown out.

[0027] The height WH of the peripheral wall 41 can be set to 1 to 10 mm. This is because the peripheral wall 41 allows the airflow AF to be spread in the radial direction RD and blown, as shown in FIG. 6(A). If the height WH of the peripheral wall is less than 1 mm, the airflow AF blown out from the ventilation passage 3 may flow without adjusting its blowing direction, flow straight forward, and not be able to be spread in the radial direction RD and blown. On the other hand, if the height WH of the peripheral wall is more than 10 mm, a pressure loss may occur due to the peripheral wall 41, and the amount of blown air may be insufficient, as shown in FIG. 6(C).

[0028] The outlet width OW of the air outlet 4 can be set to 1 to 5 mm. This is because the airflow AF blown out from the air outlet 4 can be spread in the radial direction RD, as shown in Fig. 7(A). If the outlet width OW is less than 1 mm, the air outlet 4 will be narrow, as shown in Fig. 7(B), and the amount of air blown may be insufficient. On the other hand, if the outlet width OW exceeds 5 mm, as shown in Fig. 7(C), the step dimension SD will be small relative to the outlet width OW, and the airflow AF blown out from the ventilation passage 3 will be pulled by the side wall 23 and the peripheral wall 41, and the airflow AF may not be able to be spread in the radial direction RD and blown out.

[0029] The number of spirals in the spiral-shaped air passage 3 can be 1 to 3 revolutions (360 to 1080°). This is because air can be blown widely and uniformly all around the circumference. If the number of spirals in the air passage 3 is less than one revolution, it may not be possible to blow air widely and uniformly all around the circumference. On the other hand, if the number of spirals in the air passage 3 is more than three revolutions, it may be possible to blow air widely and uniformly all around the circumference, but the structure of the air-conditioning blow-out device 1 may become complex, making it difficult to manufacture easily.

[0030] 2, the air conditioning blower device 1 of the embodiment is composed of a spiral member 21 made up of a side wall 23 and a rear wall 24, and a cover member 22 made up of a front wall 25. A cylindrical portion of the spiral shape surrounded by the side wall 23, the rear wall 24, and the front wall 25 forms an air passage 3.

[0031] 3(B), the volute member 21 is configured such that the shorter sides of the side walls 23 are oriented in the front-to-rear direction, the longer sides of the side walls 23 are arranged in a spiral shape approaching the center as they turn, and the rear sides of the side walls 23 are closed by the rear wall 24. An air passage 3 is formed between the side walls 23, and when the air passage 3 turns inward to complete a full revolution, the outer side wall 23 in the radial direction RD forms the inner side wall 23 in the radial direction RD of the outermost air passage 3. The volute member 21 has an air inlet 31 at the upstream end of the outer part of the side wall 23, through which the air flow AF is introduced in the swirling direction, and the downstream side of the air passage 3 is closed by the inner downstream end of the side wall 23, the rear wall 24, and the front wall 25 of the cover member 22.

[0032] 2, the cover member 22 is made up of a front wall 25, on which the air outlet 4 and the peripheral wall 41 are formed, and is fitted to the volute member 21 from the front. When the cover member 22 is fitted to the volute member 21, the front wall 25 closes the ventilation passage 3 from the front side, except for the air outlet 4.

[0033] As shown in Fig. 4, when the cover member 22 is fitted onto the spiral member 21, the air outlet 4 is formed along the vicinity of the outer side wall 23 that forms the ventilation passage 3, and is formed in a spiral shape along the ventilation passage 3. Because the ventilation passage 3 rotates in a spiral shape, the airflow AF flowing inside the ventilation passage 3 can be blown outward from the spiral-shaped air outlet 4 due to the outward centrifugal force. The air outlet 4 is provided with a peripheral wall 41 that surrounds the air outlet 4, and the airflow AF blown out from the air outlet 4 is spread in the radial direction RD.

[0034] A covering portion 22a is provided on the outer periphery of the cover member 22, which covers the outer periphery of the side wall 23 when the cover member 22 is fitted onto the spiral member 21. As shown in the partially enlarged view of Figure 4, the covering portion 22a covers the covered portion 21a at the front end of the side wall 23, thereby preventing air leakage within the ventilation passage 3.

[0035] According to the air conditioning blow-out device 1 according to the embodiment of the present specification, an airflow AF is introduced through an air inlet 31 at the outer side in the radial direction RD of the spiral-shaped ventilation passage 3 and is blown out from a slit-shaped air outlet 4 formed in a front wall 25 constituting the bottom surface of one side of the substantially cylindrical shape formed by the ventilation passage 3. The air conditioning blow-out device 1 according to the embodiment fits into a spiral shape that approaches the center as the ventilation passage 3 rotates, thereby reducing the space required in the airflow direction (axial direction of the spiral shape). Furthermore, the air outlet 4 is formed in a slit shape along the ventilation passage 3 and is spiral-shaped, and because the ventilation passage 3 rotates in a spiral shape, the airflow AF flowing through the ventilation passage 3 is blown outward from the spiral-shaped air outlet 4 due to outward centrifugal force. Therefore, the air conditioning blow-out device 1 according to the embodiment can blow air widely and uniformly into the automobile cabin. [Explanation of symbols]

[0036] 1 Air conditioning blowout device 3 Ventilation duct 4 Air outlet 21 Spiral member 21a Covered part 22 Cover member 22a Covering part 23 Side wall 24 Back wall 25 Front wall 26 Step 31 Air intake 41 Peripheral wall AF Air Flow OW outlet width RD Radial direction SD step size TC center TD transverse direction VD ventilation duct WH Perimeter wall height

Claims

1. The cylindrical ventilation passage is formed into a spiral shape that approaches the center as it rotates. The ventilation passage has an air inlet formed on an outer side in the radial direction of the spiral shape, through which the conditioned air is introduced in a swirling direction from a tangential direction of the spiral shape, an air conditioning blowing device, characterized in that a slit-shaped air outlet is formed in a spiral shape along the ventilation passage in a front wall that constitutes the bottom surface on one side of an approximately cylindrical shape formed from the ventilation passage of the spiral shape.

2. The air conditioning blower device according to claim 1, wherein the air outlet is formed along a side of the front wall that is radially outward of the spiral shape from a center in a transverse direction of the ventilation passage.

3. 3. The air conditioning blower device according to claim 2, wherein the air outlet is formed along the vicinity of a radially outer side wall that defines the ventilation passage.

4. 4. The air-conditioning blower device according to claim 1, wherein a step portion in the radial direction is provided between the side wall on the radial outer side of the ventilation passage and the air outlet.

5. 5. The air-conditioning blower device according to claim 4, wherein a peripheral wall surrounding the air outlet is provided in front of the air outlet.

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