JPS6326674Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a blow-off device that is installed at the blow-off port of an air conditioner that performs cooling and heating to control the blow direction.

Conventional configuration and its problems In heat pump type air conditioners that perform cooling and heating, in order to make the temperature distribution uniform in the air-conditioned room, it is necessary to blow the air conditioning flow upwards when cooling and downwards when heating. be. For this reason, a system has been proposed that detects the temperature of the blowing flow using a temperature sensing element such as a bimetal or shape memory alloy and automatically changes the blowing direction (automatic deflection). According to this, there is no need to change the blowing direction during cooling or heating, and there is also no problem of cold air blowing downward at the start of heating or during day ice. However, especially in the case of a ceiling-hung air conditioner having a horizontally elongated outlet, the amount of air blown from the outlet tends to decrease on both sides compared to the center.

On the other hand, the above-mentioned temperature-sensing elements are generally placed on both sides of the air outlet, as the central position would obstruct ventilation, but in this case, the responsiveness of the temperature-sensing element is poor due to the small amount of air being blown out. It had the disadvantage of being

Purpose of the invention Therefore, in order to solve the above-mentioned drawbacks of the conventional technology, the present invention provides a manual adjustment lever for the wind direction, and a thermosensor and a rectifier cover are provided on this adjustment lever, thereby making it possible to further adjust the wind direction by automatic deflection. An object of the present invention is to provide an air-conditioning flow blowing device having a function of concentrating the air-conditioning flow on a temperature sensing element in any deflection direction by operating a lever.

Structure of the invention In order to achieve this objective, the present invention provides a rectifying cover that guides the airflow toward the temperature sensing element when the wind direction plate (hereinafter referred to as a blade) that deflects the wind direction is automatically rotated according to the temperature. By providing this on the adjustment lever equipped with the temperature-sensing element, the air flow towards the temperature-sensing element is always focused on the temperature-sensing element, regardless of the deflection adjustment of the adjustment lever, thereby improving the thermal responsiveness of the temperature-sensing element. It enhances the

DESCRIPTION OF EMBODIMENTS The embodiments will be described below with reference to the accompanying drawings.

In Figure 1, 1 is the indoor unit of a ceiling-mounted packaged air conditioner, 2 is a blower, 3 is a heat exchanger,
4 is a heater. The indoor unit main body 1 is formed by an upper cover 5, a lower cover 6, a left side plate 7, and a right side plate 8. As is well known, the front side has a horizontally long rectangular opening to form an air outlet 9, and the rear side has an air inlet. 10, and this suction port 10 is provided with a filter 11. The air passage 12 connected to the air outlet 9 is provided with a blade 13 that deflects the blowing direction in the vertical direction so as to be rotatable around a shaft 14, and does not move due to the wind pressure in the air passage 12 at any rotational position. It is kept like that. Reference numeral 15 denotes a grille that deflects horizontally and horizontally.

Therefore, when the blower 2 is operated, the indoor air passes through the filter 11 and is sent to the heat exchanger 3 by the blower 2.
After passing through the heater 4 and being air conditioned, the air outlet 9
It is sent indoors through the air passage 12. In this case, the air conditioning flow in the air passage 12 is deflected by the blades 13 rotating about the shaft 14.

Next, details of the blowing device will be explained with reference to FIGS. 2 and 3. Reference numeral 16 denotes a base fixed to the front edge of the left side plate 7 with screws 17. A base (not shown) is also provided on the front edge of the right side plate 8 facing this base 16, and the above-mentioned blade 1 is provided between these bases 16.
3 shafts 14 are held. That is, a hollow cylindrical lever pin 18 is fixedly penetrated orthogonally to the base 16, and the shaft 14 of the blade 13 is inserted into the hollow of the lever pin 18, thereby making the blade 13 freely rotatable. On the other hand, the adjustment lever 1 is located inside the air passage 12 defined by the base 16 with respect to the lever pin 18.
9 and a joint lever 20 are pivotally supported to be able to rotate independently with respect to the lever pin 18, and the tip of the adjustment lever 19 is arranged to protrude toward the front side of the grille 15 as an operating section. Further, the adjustment lever 19 is engaged and held by a lever spring 21 having a predetermined strength so that it can be stopped at any rotational position. A hook 22 is cut and raised on the base 16 to lock the tip of the lever spring 21.

The adjustment lever 19 is integrally formed with support pieces 19a and 19a' arranged at a predetermined interval on the side opposite to the operation part, and an adjustment lever guide 19b on the side of the operation part. The upper support piece 19 of the support pieces 19a and 19a'
The lower surface of a is inclined so that it also serves as a stopper for the joint lever 20, and a coil guide 23 is suspended and fixed between both support pieces, and one end of this coil guide 23 is attached to the lower support piece 19a'. The abutted temperature sensing element coil 24 and this coil 24
Collar 25 at the top of the other end and this collar 2
A joint lever 20 that is rotated by the operation of a coil 24 via a joint lever 5 is disposed. The adjustment lever guide 19b protrudes to be located in front of the circular arc portion 27 between the pair of lever stoppers 26, 26' formed protrudingly on the front edge of the base 16, and the adjustment lever 19 is brought into contact with the lever stoppers 27, 27'. The range of vertical movement is restricted to α.

The joint lever 20 is pivotally supported by the lever pin 18, and is located in front of the pivot portion and has a retaining plate 20a,
A locking piece 20c is located at the rear of the pivot portion and extends, and the locking piece 20c has an elongated hole 20b through which the coil guide 23 described above passes. Further, the holding plate 20a has a slit that clamps and locks the side edge of the blade 13 on the front side of the shaft 14, so that when the joint lever 20 rotates, the blade 13 also rotates synchronously. . The downward rotation of the locking piece 20c is regulated by contacting the collar 25, and the upward rotation is restricted by the adjustment lever 1 whose peripheral part of the elongated hole 20b of the joint lever 20 acts as a stopper.
It is regulated by coming into contact with the upper support piece 19a of 9.

28 is a rectifying cover provided on the adjustment lever 19, and both support pieces 19a, 19 of the adjustment lever 19
The width is approximately the same as that between a' and at least the adjustment lever 1.
It has a depth dimension longer than the depth length from the pivot portion 9, and has locking pieces 28a on the upper and lower sides and one side.
It has 28b and 28c. Locking pieces 28a, 28b
is bent at right angles and has pin holes 28a' and 28b', and the locking piece 28c is bent at a right angle and has pin holes 28a' and 28b'.
The shaft hole 28c' is bent so as to be inclined at a predetermined angle in the opposite direction. That is, in the rectifying cover 28, the shaft hole 28c' engages with the lever pin 18, and the pin holes 28a' and 28b' engage with the tips of the coil guides 23 that protrude from the upper and lower surfaces of the support pieces 19a and 19a' of the adjustment lever 19. And the lever adjustment lever 1
It is installed on 9. Therefore, the rear edge 28d of the rectifying cover 28 is connected to the air outlet 9 with respect to the coil 24.
It is expanded toward the center of the coil 24, and is configured to concentrate the air conditioning flow to the coil 24.

Further, an arm 29 extending rearward is fixed to the rear side of the shaft 14 of the blade 13, and this arm 29 is equipped with a weight 30 whose attachment position can be varied (moved). part upwards,
In other words, it is constantly biased so that the blowing direction is upward.

The above-mentioned temperature sensing element coil 24 is made of a shape memory alloy, and here it is formed into a coil shape, so that the temperature inside the air passage 12 during heating of the indoor unit main body 1 (for example, 40°C) With the above, the support pieces 19a, 19
It exhibits a maximum elongation that is approximately equal to or slightly larger than the distance between a′, and exhibits a maximum contraction at or below normal temperature (for example, 20°C) at the beginning of heating operation.

Next, the operation will be explained.

In Figs. 2 and 3, when the blowing temperature reaches a certain temperature or higher, the air guided by the rectifying cover 28 comes into contact with the temperature sensing element coil 24, and the coil 24 expands, and the joint lever 2 is pulled up through the collar 25.
When the lever 20 is pressed and rotated around the lever pin 18, the vane 13 engaged with the retaining piece 20a rotates downward, deflecting the air conditioning air downward. This deflection is possible until the locking piece 20c abuts against the support piece 19a of the adjustment lever 19. Next, when the blowing temperature falls below the certain temperature, the weight 30
The rotational force of the blade 13 biased by the force of the joint lever 20 compresses the coil 24 back to its original state. In this case, the joint lever 20 moves down until the coil 24 is in a tight contact state.
3 faces upward and deflects the air conditioning flow upward.
As described above, the air flow is automatically deflected upward or downward within the range β in response to cooling or heating.

On the other hand, adjust the adjustment lever 19 with the adjustment lever guide 19b.
When set to any position within the range α where the lever contacts the lever stoppers 26, 26' of the base 16, the automatic deflection due to the expansion and contraction of the coil 24 described above can be adjusted further upward or downward within the above adjustment range. can. In this case, the coil 24 and the rectifying cover 28 held by the adjustment lever 19 also rotate around the lever pin 18 together with the adjustment lever 19, so that the air conditioning flow is guided in any adjustment position (direction) of the adjustment lever 19. It is possible to always maintain the same state.

Effects of the invention As is clear from the above explanation, the present invention automatically deflects the deflection blades installed in the air path of the air conditioner according to the cold and hot air using a temperature-sensing element such as a temperature-sensing element coil, and further adjusts the deflection blades. By providing the adjustment lever with a rectifying cover that allows the direction of the automatic deflection to be adjusted by the lever and guides the air conditioning flow to the temperature sensing element, any adjustment position (direction) of the adjustment lever can be adjusted.
In this case, the air conditioning flow is always concentrated toward the temperature sensing element, and the thermal responsiveness of the temperature sensing element can be improved.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an air conditioner having an air conditioner blowing device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the blowing device, and FIG. 3 is a side view of the blowing device. 9...Air outlet, 13...Blade (wind direction plate), 1
9... Adjustment lever, 24... Temperature sensing element coil (temperature sensing element), 28... Rectifier cover.

Claims (1)

[Scope of utility model registration request] A horizontally elongated outlet, a wind direction plate rotatably provided in the longitudinal direction of the outlet, and a temperature sensing element that senses the temperature of the outlet, expands and contracts, and automatically deflects the wind direction plate within a range corresponding to the expansion and contraction. , which holds the temperature sensing element and is provided on either the left or right side of the air outlet on the same axis as the rotational axis of the wind direction plate, and allows the direction of rotation of the wind direction plate by the temperature sensing element to be changed within a certain range. An air conditioning flow blowout device comprising an adjustment lever and a rectifying cover provided on the adjustment lever to guide the blowoff flow to the temperature sensing element.