JPH0370926A - Air conditioner - Google Patents

Abstract

PURPOSE:To dissolve an unpleasant sensation generated when the operation of an air conditioner is initiated by providing a return path for returning part of the air discharged from the exhaust side of a heat exchanger to its suction side therethrough and an adjusting mechanism for adjusting the amount of the returned air flowing in the return path. CONSTITUTION:An opening and closing adjusting mechanism 20 is composed of a wind control plate 21 rockably provided in a return path 19 and an operating material 22 provided between the wind control plate 21 and a fixed portion in the return path 19. Since the operating material 22 is made of a shape memory alloy, the operating material 22 shrinks at a low temperature to keep the return path 19 open and, when a temperature rises, the operating material 22 extends to keep the return path 19 closed. Therefore, when a room temperature is low on the initiation of room heating and the temperature of the air blown out from a cross flow fan 15 is low, since the much air is returned to a heat exchanger 14 via the return path 19 to give heat to the heat exchanger 14, the air from a blowout opening 12 is warm though a little. When the room temperature and therefore the temperature of the air blown out from the fan 15 rise, the amount of the air returned to the heat exchanger 14 via the return path 19 is reduced and the amount of the air from the blowout hole 12 is increased as it is warm.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for providing a casing having an inlet and an outlet.
The present invention relates to an air conditioner that is provided with a heat exchanger for heating or cooling, and a fan that blows air sucked in from the suction port from the outlet through the heat exchanger.

[Conventional technology]

This type of air conditioner takes in air from the suction port, heats or cools it using a heat exchanger, and then blows it out from the outlet.Structurally, all of the air discharged from the exhaust side of the heat exchanger is heated or cooled by a heat exchanger. It is designed to blow out from the air outlet.

Incidentally, there is a certain temperature difference between the sucked air and the blown air, provided that the capacity of the heat exchanger and the amount of air sucked and blown out are approximately constant.

[Problem to be solved by the invention]

In an indoor air conditioner with a small heat exchange capacity, the above temperature difference is small, and if there is a large difference between the ideal air conditioning target temperature and the room temperature when the air conditioner starts operating, cold air will blow during heating and warm air will blow when cooling. Since the air is blown out from the exit, there is a risk that people in the room may feel uncomfortable.

To give a concrete explanation using a heating air conditioner as an example, if there is an air conditioner that has the ability to blow out air that is about 10 degrees warmer than room temperature, if this air conditioner is used in a place where the room temperature is 0 degrees Celsius, It blows out air at a temperature of 10 degrees Celsius, which is warmer than the air inside the room, but to the human body it feels like cold air.

Therefore, it is an object of the present invention to eliminate such discomfort that occurs when the air conditioner starts operating.

[Means to solve the problem]

The characteristic configuration of the present invention for achieving the above object includes a return path that returns a part of the air discharged from the exhaust side of the heat exchanger to the intake side of the heat exchanger, and an air return through this return path. An adjustment mechanism for adjusting the amount is provided.

[For production]

When the air discharged from the exhaust side of the heat exchanger is returned to the intake side of the heat exchanger through the return path, heat exchange is performed again in the heat exchanger. The amount of air blown out from the outlet is reduced by the amount returned to the heat exchanger, but the temperature is close to the optimum temperature that is the air conditioning target.

Therefore, when the difference between the appropriate temperature and the air temperature in the air-conditioned space is large, such as when the heat exchanger starts operating, the adjustment mechanism is adjusted to increase the amount of air returned to the heat exchanger. As a result, the number of repetitions of heat exchange increases, the temperature difference between the air discharged from the discharge side of the heat exchanger and the air in the air-conditioned space increases, and although the quantity of air from the outlet decreases, , that's how close it gets to the right temperature.

When the air temperature in the air-conditioned space approaches the appropriate temperature some time after air conditioning starts, the control mechanism is adjusted to reduce the amount of air returned to the heat exchanger. This reduces the number of repetitions of heat exchange, and the amount of air from the outlet increases while maintaining the temperature close to the appropriate temperature.

〔Effect of the invention〕

As a result, even when there is a large difference between the temperature of the air in the air-conditioned space and the optimum temperature, air at a temperature closer to the optimum temperature can be blown out from the air outlet than before, without causing discomfort to the human body. Ta.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Figure 2, the first and second gas burners (IA),
There is a water heater (2) equipped with (IB), and this water heater (2) includes a gas supply line (3), a water supply line (4), a hot water supply line (5), a feed line (6), This is used to connect the return passage (7) and the like. A collar (8) is connected to the tip of the hot water supply path (5). A convector (9) as an indoor air conditioner is connected to the tip side of the sending passage (6) and the return passage (7), and a convector (9) as an indoor air conditioner is connected to the base end of the sending passage (6) for circulating hot water. A pump (10) is interposed.

The first and second gas burners (LA) and (IB) burn with gas fuel supplied from the gas supply channel (3), and the first gas burner (1A) is the gas fuel supplied from the gas supply channel (3).
) to the hot water supply path (5), the second gas burner (IB) heats the water sent from the hot water supply path (5) to the hot water supply path (5), and the second gas burner (IB) connects the feed path (6) and the return path (7).
) to heat the circulating hot water. In addition, the first gas burner (IA
) burns only when the flush (8) is operated and hot water is flowing through the hot water supply path (5), but the second burner (1B
) continues to burn when the hot water flowing from the return passage (7) is below the set temperature.

As shown in FIG. 1, the convector (9) has a heating heat exchanger ( 14
) and a cross flow fan (15). The suction port (11) is provided with a suction grill (16), and the air outlet (12) is provided with a movable louver (17). In this convector (9), when the cross flow fan (15) located below is driven, its suction force draws indoor air from the upper suction port (11) to the casing (13).
), passes through a heat exchanger (14), and then blows out of the casing (13) from a lower outlet (12).

The heat exchanger (14) is connected to the sending passage (6) and the return passage (7). When hot water heated to nearly 80 degrees is sent through the feed passage (6), the heat is released into the air in the heat exchanger (14), and then it is passed through the return passage (7).
) and return to the water heater (2).

Inside the casing (13), air blown out from the cross flow fan (15) is distributed between a portion facing the suction side of the heat exchanger (14) and a portion facing the blowing side of the cross flow fan (15). A return path (19) is provided to return a part of the heat to the heat exchanger (14). And this reduction route (1
9) Inside is provided with an opening/closing adjustment mechanism (20) that automatically opens and closes according to the air conditioning load.

The opening/closing adjustment mechanism (20) includes an air conditioning plate (21) swingably provided in the return path (work 9), and a
21) and the fixed part in the return path (19).
2), and when the operating member (22) expands or contracts, the air conditioning plate (21) swings, and the return path (19) is adjusted to open or close.

The operating member (22) is made of a shape memory alloy, and at low temperatures it contracts to keep the reduction path (I9) open, and when the temperature rises to a certain extent, it expands and opens the reduction path (I9). 19) is maintained in a closed state. Therefore, when the room temperature is low when heating starts, etc., the cross flow fan (15)
When the temperature of the air blown out from the outlet (12) is low, much of the air passes through the reduction path (19) and is returned to the heat exchanger (14) to provide further heat. Although the amount is small, it is relatively warm. When the room temperature rises a while after heating starts and the temperature of the air blown out from the cross flow fan (15) increases, the amount of air returned to the heat exchanger (14) through the return path (19) increases. The amount of air from the air outlet (12) also increases while remaining warm.

[Another example]

The present invention can also be implemented as follows.

(a) A gas burner or the like is installed inside the casing (13) and serves as a heat source for the heat exchanger (14).

(b) A temperature sensor for detecting the temperature or room temperature in the reduction path (19) and a swinging mechanism for swinging the air conditioning plate (21) are provided, and the air conditioning plate (21) is adjusted based on the detection information of the temperature sensor. 21) Control opening and closing.

(C) Casing the thermometer to detect room temperature (13)
At the same time, an operating tool for swinging and adjusting the air conditioning plate (21) is provided, and the air conditioning plate (21) is opened and closed by manually operating the operating tool based on the value indicated by the thermometer. do.

(d) The heat exchanger (14) is configured for cooling, and the air conditioner is configured for cooling.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the air conditioner according to the present invention, with FIG. 1 being a schematic longitudinal sectional side view of a convector, and FIG. 2 being an overall view of the air conditioning system. (11)...Suction port, (12)...Blowout port, (13)...Casing, (14)...
...Heat exchanger, (15) ...Fan, (1
9)...Reduction pathway, (20)... Regulatory mechanism.

Claims (1)

[Claims] A heat exchanger (14) for heating or cooling is provided in a casing (13) having an inlet (11) and an outlet (12);
The air conditioner is provided with a fan (15) that blows air sucked in from the suction port (11) from the air outlet (12) via the heat exchanger (14), a return path (19) that returns a part of the air discharged from the exhaust side of the heat exchanger (14) to the intake side of the heat exchanger (14);
and an adjustment mechanism (20) that adjusts the amount of air returned through the return path (19).