JPH0635711Y2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an improvement of an air conditioner including a heater core using hot water as a heat source.

2. Description of the Related Art As a conventional air conditioner having a heater core using hot water as a heat source, as shown in Japanese Patent Publication No. 51-41262, the air inlet of the heater core is provided in a plane parallel to the air stream line in the air duct. It is disclosed in Japanese Utility Model Publication No. 60-13686 that the damper of the air inlet is closed when the valve of the hot water supply pipe is closed.
As shown in the figure, a heater core C is arranged in an air duct B downstream of the evaporator A, and a damper E for opening and closing an air inlet D thereof is provided. The opening and closing of the damper E is used to supply hot water to the heater core C. It is known that an interlocking mechanism is configured so that the damper E is at the fully closed position when the valve of the pipe is opened / closed and the valve E is fully closed.

Problems to be Solved by the Invention In the structure shown in Japanese Patent Publication No. 51-41262, since the side surface of the heater core is orthogonal to the air streamline, even in the cool mode, the air resistance of the side surface causes cold wind. There is an unavoidable decrease in volume and generation of blower noise.

In Japanese Utility Model Publication No. 60-13686 and FIG. 2 of this document, since the air inlet D of the heater core C is closed by the damper E in the cool mode, the heater core C should be able to pass outside the bypass passage F. As a result of the airflow being blocked by the damper E, the damper E causes air resistance, which also inevitably reduces the amount of cold air and generates blower noise.

Therefore, an object of the present invention is to make it possible to increase the amount of cool air and reduce blower noise in the cool mode in an air conditioner having a heater core arrangement as shown in FIG.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a heater core, in which a hot water type heater core having an air inlet opening obliquely intersecting an air stream line is arranged in an air duct of an air conditioning unit. A bypass flow path is formed between the heater core and an inner wall of the duct, and a temperature control damper that opens and closes the air inlet and the bypass flow path of the heater core is provided. An opening / closing mechanism of the temperature control damper and hot water supply to the heater core. What is the opening and closing mechanism of the pipe valve?
It is connected by an interlocking / coupling mechanism consisting of an arm that is fixed to both opening / closing mechanisms and a link that connects both arms. The specifications such as the length and position of the interlocking / coupling mechanism are the same as those of the hot water supply pipe. A configuration is adopted in which the temperature adjustment damper is set so as to be guided to a position parallel to the air stream line in the air duct at the fully closed position of the valve.

Operation Since the present invention has the above-described configuration, when the cool mode is operated and the valve of the hot water supply pipe is set to the closed position, the temperature control damper works in parallel with the valve and becomes parallel to the air stream line in the air duct. The air guided to the position and sent by the blower, after passing through the evaporator, is sent from the air mix chamber to each of the outlets through the two passages of the bypass passage and the heater core. At this time, since the valve is closed to the heater core, hot water is not supplied and the cool mode is not disturbed.

As a result of the air flowing through the two flow paths of the bypass flow path and the inside of the heater core, the amount of cool air increases as compared with the conventional device as much as it passes through the inside of the heater core.

Also, the temperature control damper occupies a position parallel to the airflow line,
The air resistance is reduced because the air inlet of the heater core is opened.

As a result, it is possible to favorably prevent a decrease in the rotation speed due to the idle rotation of the fan due to a decrease in the blower air flow, and a decrease in noise caused thereby.

Example FIG. 1 shows a skeletal vertical cross section of an example of the embodiment. An air conditioning unit 1 includes a blower 2 and an evaporator 3, and an air flow line passing through the evaporator 3 is provided in an air duct 4 downstream of the evaporator 3. A heater core 7 is disposed which uses hot water whose heat source is an air inlet 6 which is obliquely intersected with the air inlet 5, and a bypass flow passage 9 is formed between the heater core 7 and the duct inner wall 8.

An air mix chamber 10 is formed downstream of the heater core 7 and the bypass flow passage 9 and communicates with the air outlets 11, 12, and 13.

A temperature control damper 14 is provided at the air inlet 6 of the heater core 7 described above.
Is rotatably attached, and is between a position where the air inlet 6 is fully closed as shown by a chain line 15 in the drawing and a position where the bypass flow path 9 is fully closed as shown by a chain double-dashed line 16. It is arranged so as to be rotated and locked at various predetermined positions.

A hot water supply pipe 17 is connected to the heater core 7, and a valve 18 controls the supply and stop of hot water.

The above-mentioned opening / closing mechanism 19 of the valve 18 and the above-mentioned temperature control damper 14
The opening / closing mechanism 20 is connected by the interlocking / coupling mechanism 21.

The interlocking / coupling mechanism 21 in the illustrated example includes an arm 22 interlocking with the valve 18, an arm 23 interlocking with the temperature control damper 14, and a link 24 connecting both arms, but any other mechanism may be used. It may be.

The specifications of the length and position of the interlocking / coupling mechanism 21 described above are such that when the opening / closing mechanism 21 sets the valve 18 to the fully closed position, the opening / closing mechanism 20 positions the temperature control damper 14 in parallel with the airflow line 5. It is set to the interlocking function that can be guided.

Of course, the interlocking / coupling mechanism 21 also has a function of guiding the temperature control damper 14 to a predetermined opening according to the opening of the valve 18.

With the above-mentioned configuration, when the air conditioner is set to the cool mode, the temperature adjustment damper 14 is operated when the valve 18 is fully closed and the supply of hot water from the hot water supply pipe to the heater core 7 is cut off. Becomes a position parallel to the air stream line 5 as shown in FIG. 1, and the bypass flow passage 9 is fully opened, and the air inlet 6 of the heater core 7 is also opened. Therefore, the air passing through the evaporator 3 is Since it will flow in two flow paths, the bypass flow path 9 and the inside of the heater core 7, the air resistance when the air inlet 6 of the heater core 7 is closed by the temperature control damper 14 disappears, so that the amount of cold air increases and the air resistance decreases. Therefore, the blower noise is also reduced.

Effect The present invention has the above-described configuration and operation, and the air conditioner is set to the cool mode, and the supply of hot water as a heat source to the heater core is cut off when the valve is fully closed and at the same time the temperature control damper is connected to the air duct. Since the air is guided to a position parallel to the air flow line in the inside, the air passes through two passages, a bypass passage and a passage in the heater core where the heat source supply is cut off, and the air in the limited air conditioning unit It has the effect of obtaining the maximum amount of cold air in the duct.

Further, since the air inlet of the heater core is not closed by the temperature control damper and the damper occupies a position parallel to the air streamline,
The air resistance caused by the damper is minimized, which also has the effect of minimizing blower noise.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic vertical sectional view showing an example of an embodiment in a skeleton form,
The figure is a schematic longitudinal sectional view similar to FIG. 1 of the conventional apparatus. 1: Air conditioning unit, 2: Blower, 3: Evaporator, 4: Air duct, 5: Air stream line, 6: Air inlet, 7: Heater core, 8: Duct inner wall, 9: Bypass passage, 10: Air mix chamber, 14: Temperature control damper, 17: Hot water supply pipe, 18: Valve, 19, 20: Open / close mechanism, 21: Interlocking / connecting mechanism, 22, 23: Arm, 24: Link.

Claims (1)

[Scope of utility model registration request] 1. A hot water heater core having an air inlet opening obliquely intersecting an air stream line is arranged in an air duct of an air conditioning unit, and a bypass flow path is formed between the heater core and the inner wall of the duct. A temperature control damper that opens and closes the air inlet and the bypass flow path of the heater core is provided, and the opening and closing mechanism of the temperature control damper and the opening and closing mechanism of the valve of the hot water supply pipe to the heater core are fixed to both opening and closing mechanisms. Interlocking that consists of an arm and a link that connects both arms.
It is connected by a connecting mechanism, and the length of the interlocking / connecting mechanism is
The specifications of the position, etc. are the fully closed position of the valve of the hot water supply pipe, and the temperature control damper is set so as to be guided to a position parallel to the air stream line in the air duct.