JPH062938A - Air-passage-switching damper and air-conditioning device - Google Patents

Abstract

PURPOSE:To secure an opening-closing vane from influences of the flow velocity of air so as to prevent it from vibrating and improve its screening effect, etc., by forming a substantially T-shaped casing in which two passageways meet perpendicularly to each other in a setup to provide where they meet the opening-closing vane in a rotatable manner and some means related thereto. CONSTITUTION:Inside a casing 7 of an air-passage-switching damper 6 an opening- closing vane 8 is provided as a means of connecting either a first air passageway 7a or a second air passageway 7b to a third air passageway 7c. The casing 7 is formed in the shape of substantially a letter T. The opening-closing vane 8 is designed to be tuned between a first screening position and a second screening position at which the opening-closing vane 8 cuts the axis of respectively the first air passageway 7a and the second air passageway 7b at right angles, hence closing the two passageways respectively. Furthermore, by the use of a spring 9 of shape-memory alloy the opening- closing vane 8 is spring-loaded either at the first screening position or at the second screening position. As a means of weighting down the opening-closing wane 8 to the other screening position a weight 10 is provided, which exerts a force greater than that of the spring 9 during low temperature and a force smaller than that of the spring 9 during high temperature.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air passage switching damper for switching one of two air passages to an exhaust passage for communication, and an air conditioner suitable for using the switching damper. The structure relates to a structure capable of reducing the influence of the air flow on the shielding state, and the latter relates to a device capable of effectively reducing the influence of outdoor hot air and cold air.

[0002]

2. Description of the Related Art As a switching damper for switching an air passage used in an air conditioner or the like depending on a temperature condition, a switching damper using an electric motor has been commercially available. As a switching mechanism in this conventional damper,
There are those that are switched manually by a changeover switch, and those that are automatically switched by a built-in temperature sensor.

[0003]

However, in the damper using the above-mentioned conventional electric motor, of course, power source construction for the motor is required, and the cost is increased accordingly. Further, in the case of the temperature sensor built-in type, electric power is always required, and the cost is also increased in this respect. In addition, since the window area of a recent building is large, the influence of outdoor hot air and cold air on the temperature inside the living room is large, and the load on the air conditioner is correspondingly large. Therefore, there is a demand for an air conditioner that can reduce the influence from the outdoors. The present invention has been made in view of the above-mentioned conventional problems, and it is an object of the present invention to provide a switching damper that does not require a switching electric motor and can reduce costs, and an air conditioner that can reduce the effects of outdoor hot air and cold air. Has an aim.

[0004]

The invention according to the first aspect of the present invention is an air system in which opening and closing vanes are provided in a casing to connect either the first air passage or the second air passage to the third air passage. In the passage switching damper, the casing is configured such that the first and second air passages are substantially orthogonal to each other and the third air passage is substantially co-axial with either of the first and second air passages. A second shielding path that closes the second air passage substantially perpendicularly to the axis of the first air passage and closes the first air passage by closing the opening and closing blades. A first urging means made of a shape memory alloy that is configured to be rotatable between a shielding position and urges the opening / closing blade to one of the first and second shielding positions; On the other hand, the force is greater than and higher than the urging force of the first urging means at low temperature. It is characterized in that a second biasing means for biasing with a biasing force smaller than urging force of time. Further, the invention of the second aspect provides an air passage, which is provided with a shielding zone between a window and a living room, and a summer passage open to the ceiling side of the zone and a winter passage open to the floor join the exhaust passage. And an exhaust fan provided in the air passage, and an air passage switching damper that connects either the summer passage or the winter passage to the exhaust passage to communicate with the exhaust passage. Is.

[0005]

According to the switching damper of the first aspect of the invention,
Since the opening / closing blades are rotated by the first urging means made of the shape memory alloy and the second urging means such as the spring, the electric motor and the temperature sensor can be automatically switched without the need. It is possible to reduce the cost by eliminating the need for power supply work and power. Further, in the damper of the present invention, the influence of the air flow can be reduced, and it is possible to avoid problems such as the opening and closing blade vibrating due to the air flow and the reliability of switching being impaired. The reason why the influence of this air flow can be reduced is as follows. That is, in the present invention, the casing is formed in a T shape in which the first and second passages are substantially orthogonal to each other and the third air passage is in a substantially straight line, and the opening and closing blades are provided with passages at any time of shielding. It is considered that it is because the air passage area is not narrowed in any of the shielded states because it is positioned so as to be orthogonal to the axis line of, and therefore, there is no portion where the flow velocity of air becomes high. Further, according to the air conditioner of the second aspect of the present invention, the shielding zone is provided between the window and the living room, and the air in the shielding zone whose temperature rises or falls due to the hot air or the cold air outside is exhausted. , The effect from the outside can be mitigated and the load on the air conditioner can be reduced. Further, in this case, the air in the shielding zone is sucked from the ceiling side when the temperature rises and tends to accumulate on the ceiling side, and the air that falls and tends to accumulate on the floor side is sucked from the floor side. It can be discharged more effectively.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are views for explaining an air conditioner and a switching damper according to an embodiment of the present invention.

In the figure, 1 is a window of a building, and the window 1
A small space is provided between the living room 5 and the living room 5, and the space serves as a shielding zone 2 for blocking the influence of outdoor hot air and cold air. On the ceiling side of the shielding zone 2, a summer passage 3a opening to the portion is arranged, and on the floor side, a winter passage 3b opening to the portion is arranged. The two passages 3a and 3b are located above the shielding zone 2 and the exhaust passage 3
An exhaust fan 4 is provided in the exhaust passage 3c.

At the junction of the summer passage 3a and the winter passage 3b, either of the passages 3a and 3b is connected to the exhaust passage 3.
A switching damper 6 is provided so as to switch to c and communicate. The casing 7 of the damper 6 is provided in the summer passage 3
a, a first passage 7a, a second passage 7b, and a third passage 7c which are respectively connected to the winter passage 3b and the exhaust passage 3c by a flange.
The first and second passages 7a and 7b are orthogonal to each other, the third passage 7c is a straight line with the first passage 7a, and has a T-shape as a whole. An opening / closing blade 8 is arranged in the casing 7. The opening / closing blade 8 has a structure in which a blade plate 8a is connected to a rotating shaft 8c by an arm 8b. Both ends of the rotating shaft 8c project outward from the side wall of the casing 7 and are fixed to the side wall. Is supported by a bearing. As a result, the blade plate 8a has a summer passage shielding position (shown by a chain double-dashed line in FIG. 1) as a first shielding position which is orthogonal to the axis of the first passage 7a and closes the passage, and the second passage. It is rotatable between a winter passage blocking position (shown by a solid line in the figure) as a second blocking position that closes the passage at right angles to the axis of 7b.

Between the pin 8d, which is inserted and fixed in the casing inner portion of the rotating shaft 8c, and the locking rod 7d which is erected on the bottom wall of the casing 7, a shape as a first biasing means is provided. A memory alloy biasing spring 9 is provided. The biasing spring 9 is in a contracted state at a high temperature, and its biasing force is significantly increased as compared with a low temperature. Therefore, the biasing spring 9 pivotally biases the opening / closing blade 8 to the winter passage blocking position shown by the solid line in the drawing when the temperature is high. The boundary temperature between the high temperature and the low temperature is set to, for example, about 20 ° C. In addition, in the casing outside protrusion of the rotating shaft 8c,
A weight 10 as a second urging means is fixed via a support bar 10a. The mounting position of the weight 10 is located substantially vertically above the rotary shaft 8c when the opening / closing blade 8 is located at the winter passage blocking position, and is substantially horizontal when located at the summer passage blocking position. It is set to be in position.

Next, the function and effect of this embodiment will be described. In the device of this embodiment, since the urging force of the urging spring 9 is smaller than the urging force of the weight 10 due to the low ambient temperature in the winter, the opening / closing blade 8 is located at the summer passage blocking position shown by the two-dot chain line in the figure. Swiveling and thus shield zone 2
The air in the lower part of is sucked and discharged through the winter passage 3b. On the other hand, in the summer, since the ambient temperature is high, the urging force of the urging spring 9 becomes larger than the urging force of the weight 10, so that the opening / closing blade 8 is rotated to the winter passage blocking position shown by the solid line in the figure. Therefore, the air above the shielding zone 2 is sucked and discharged through the summer passage 3a. The suction path can be switched between day and night depending on the setting of the operating temperature of the shape memory alloy.

As described above, in this embodiment, since the shielding zone 2 is provided so that the air in the portion is exhausted, it is possible to avoid the influence of the hot air and the cold air on the living room, and the load of the air conditioner is increased accordingly. Can be reduced. Also, for hot air that tends to collect near the ceiling in the summer, suck it in from the ceiling,
The low-temperature air that easily accumulates near the floor in winter is sucked from the vicinity of the floor, which is rational, and the influence from the outside can be more reliably avoided.

Further, in the switching damper 6, the switching between the winter passage 3b and the summer passage 3a is constituted by the shape memory alloy biasing spring 9 and the weight 10, so that the structure is simple and the operating electric power is required. It is unnecessary, and the equipment cost and operating cost can be reduced compared to the case of using an electric motor.

Further, in this embodiment, since the casing 7 has a shape in which the first and second air passages 7a and 7b are orthogonal to each other, the blade plate 8a is rotated to a position orthogonal to the axes of the both passages 7a and 7b. Therefore, at any shielding position, there is little influence of the flow velocity of the air flow, and there is no problem that the plate 8a vibrates or the shielding becomes uncertain.

FIGS. 3 and 4 show a damper in the course of the establishment of the present invention. In the switching damper 20 shown in FIG. 3,
The summer passage 21a and the winter passage 21b of the casing 21 are straight lines, and the exhaust passage 21c is orthogonal to this. Further, the opening / closing blades 22 are urged to the summer passage blocking position (position shown by the chain double-dashed line in the figure) by the weight 23 attached to the tip of the blade plate 22a, and the winter passage blocking position is urged by the biasing spring 24 made of shape memory alloy. It is urged to (the solid line position in the figure).

In the switching damper 30 shown in FIG. 4, the summer passage 31a and the winter passage 31b of the casing 31 are straight, and the discharge passage 31c is orthogonal to this. Further, the opening / closing blade 32 is biased to the summer passage blocking position (rightward position in the drawing) by a normal spring steel biasing spring 33 attached to the tip of the blade plate 32a, and a bias spring 34 made of a shape memory alloy. Is biased to the passage blocking position in winter (solid line position in the figure). However, the dampers shown in FIGS. 3 and 4 have problems that the blade plate vibrates and the certainty of the shielding state is slightly deteriorated. It is considered that the cause of this is that the flow velocity of the air flow flowing inside has an influence. That is, in the switching dampers 20 and 30, since the summer passage and the winter passage are straight, that is, they are not orthogonal to each other as in this embodiment, the air passages are provided by the blade plates at any shielding position. The area becomes smaller and the air velocity increases accordingly. That is, it is considered that the influence of the flow velocity is increased in this blade plate portion, and the problems such as the above-mentioned vibration occur. On the other hand, in the present embodiment, the passages in summer and winter are orthogonal to each other, so that the passage area does not decrease due to the presence of the blade plates, and the above-mentioned problems do not occur.

Next, the results of experiments conducted to confirm the operation of the switching damper of this embodiment will be described. FIG. 5 is a diagram for explaining the present experimental method. In the figure, 6 is a damper of the present embodiment, 12 is an anemometer, and 13 is an exhaust fan. The influence of the mounting angle θ on the horizontal plane of No. 6 was investigated. As the operating temperature, the temperature of the shape memory alloy spring 9 was measured with a thermocouple.

[0017]

[Table 1]

[0018]

[Table 2]

Table 1 shows the test conditions, and Table 2 shows the test results. As is clear from Table 2, the damper of this embodiment switches to the low temperature side at 18 to 20 ° C, that is, the summer passage blocking position, and switches to the high temperature side at 22 to 25 ° C, that is, the winter passage blocking position. You can see that Also, in this case, it can be seen that the wind speed and the mounting angle θ have almost no effect. It should be noted that in the above embodiment, the case where the second biasing means is a weight has been illustrated, but it is needless to say that this is not limited to a weight and, for example, an ordinary spring steel biasing spring may be adopted. it can.

[0020]

As described above, according to the switching damper of the present invention, the casing is formed in a T shape in which the first and second passages are substantially orthogonal to each other, and the opening and closing blades are orthogonal to the first and second passages. Since it is rotated to the position where it is rotated, there is an effect that the vibration of the blade is not affected by the influence of the flow velocity of the air, and it is possible to reliably shield the blade. Further, in the invention of the second aspect, the shielding zone is provided. Since the air in the zone is sucked from the upper part in the summer and from the lower part in the winter, it is possible to reliably avoid the influence of the outside air and reduce the load on the air conditioner.

[Brief description of drawings]

FIG. 1 is a sectional side view of a damper according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram of an air conditioner according to an embodiment of the invention of claim 2.

FIG. 3 is a cross-sectional side view for explaining the formation process of both inventions.

FIG. 4 is a cross-sectional side view for explaining the formation process of both inventions.

FIG. 5 is a schematic configuration diagram of an experimental device for confirming the effects of the above-described examples.

[Explanation of symbols]

 1 window 2 shielding zone 3a summer passage 3b winter passage 3c exhaust passage 4 exhaust fan 5 living room 6 air passage switching damper 7 casing 7a first air passage 7b second air passage 7c third air passage 8 open / close blade 9 made of shape memory alloy Biasing spring (first urging means) 10 Weight (second urging means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 592125949 Shinko Shoji Co., Ltd. 2-6-17 Kitahama, Chuo-ku, Osaka City, Osaka Prefecture (71) Applicant 592149945 3-5 25 Konoike-cho, Higashi-Osaka City (72) Inventor Masanori Hikarimachi 1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Within Nippon Telegraph and Telephone Corporation (72) Inoue Miyamoto 1-5-5 Takatsukadai, Nishi-ku, Kobe, Hyogo Kobe Steel Ltd. Tokoroseishin Research Institute (72) Inventor Yoshio Itami 1-5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Kobe Steel Works Seishin Research Institute (72) Inventor Takahiro Takashima 2 Yamatedai Okubocho Akashi-shi Chome 75-13 (72) Inventor Yukichi Shimada 5-7-8 Shiba, Minato-ku, Tokyo Hibiya General Equipment Co., Ltd. (72) Inventor Kusado Yoshitake Chuo-ku, Osaka City Hama-chome No. 6 No. 17 Shinko Shoji Co., Ltd. in the (72) inventor Katsumi Murakami Higashi Higashikonoike-cho 3-chome No. 5 No. 25 Daito Te-click in the Co., Ltd.

Claims (2)

[Claims] 1. An air passage switching damper having opening and closing vanes arranged in a casing for communicating either a first air passage or a second air passage with a third air passage. , The second air passages are substantially orthogonal to each other, and the third air passages are configured to have substantially the same axis as either the first air passage or the second air passage. Is configured to be rotatable between a first shielding position that is substantially orthogonal to and closes the first air passage and a second shielding position that is substantially orthogonal to the axis of the second air passage and closes the second air passage. , A first urging means made of a shape memory alloy for urging the opening / closing blade to one of the first and second shielding positions, and a low temperature of the first urging means to the other of the shielding positions. Urging force greater than the urging force of An air passage switching damper, comprising: 2. A shield zone is provided between the window and the living room, and an air passage is formed by merging a summer passage opening on the ceiling side of the zone and a winter passage opening on the floor side with an exhaust passage. An air conditioner characterized in that an exhaust fan is provided in the air passage, and an air passage switching damper that connects either the summer passage or the winter passage to the exhaust passage for communication is provided at the confluence portion.