JP2000240953A - Hot air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve comfortableness by upward hot air heating in a hot air heater designed to perform a heating by upward or downward blowing hot air. SOLUTION: This apparatus is provided with an upper suction port 9A and a downward hot air blowoff port 10 only to be opened in the downward hot air heating operation, a blower 6 to deliver air sucked from the upper suction port from the hot air blowoff port, a downward hot air heating comprising a heat exchanger 5 for turning air to hot air, a lower suction port 9B, an upward hot air blowoff port 14 and an upward cool air blowoff port 15 only to be opened during the upward hot air heating operation, a blower 6 to deliver air sucked from the lower suction port from the hot air blowoff port and the cool air blowoff port and an upward hot air heating comprising the heat exchanger 5 to turn air to be sent to the hot air blowoff port to hot air. This can reduce a vertical temperature difference of a room by controlling the upward and downward hot air heating while enabling obtaining of a comfortable dwelling space without a sort of air flow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air heater for heating by blowing out hot air.

[0002]

2. Description of the Related Art A conventional hot air heater of this type is generally known as shown in FIG. The configuration will be described below with reference to FIG. Sister 1,
An outdoor unit 4 composed of a boiler 2 and a circulation pump 3 is connected to an indoor unit 7 composed of a heat exchanger 5 and a blower 6 disposed below the heat exchanger 5, and a reciprocating connection pipe 8 forms a system 1 and a boiler 2. , The heat exchanger 5 and the circulation pump 3 are connected in this order to form a circulation circuit. The indoor unit 7 has an air inlet 9 at the upper front and a hot air outlet 10 at the lower front.
Are provided respectively. Reference numeral 11 denotes room temperature detecting means provided near the suction port 9 for detecting the temperature of the sucked air.

The operation of the hot air heater having the above configuration will be described. The boiler-2 of the outdoor unit 4 is operated to circulate hot water to the heat exchanger 5 of the indoor unit 7 by the pump 3. When the temperature of the hot water sent to the indoor unit 7 becomes equal to or higher than a predetermined temperature, the blower 6 starts operating, and the indoor air sucked from the suction port 9 exchanges heat with the hot water in the heat exchanger 5. Then, hot air is blown into the room from the lower outlet 10 and contributes to heating. When the temperature of the indoor air sucked from the suction port 9 detected by the room temperature detecting means 11 becomes higher than the set temperature, the operation of the blower 6 is stopped. The temperature is controlled to the set temperature. Furthermore, in order to control the capacity of the hot air heater, reduce the noise, and prevent a sense of airflow, a strong wind, a weak wind, a light wind, etc., depending on the difference between the temperature of the intake air detected by the room temperature detecting means 11 and the set temperature. In addition, as the temperature of the air sucked from the suction port 9 approaches the set temperature, the air volume of the blower 6 is controlled to be smaller.

[0004] As this type of hot air heater for switching hot air blowing up and down, there is one described in Japanese Patent Publication No. 61-37777. As shown in FIG. 26, in this hot air heater, the same parts as those in FIG. 25 are denoted by the same reference numerals, and the description thereof will be omitted. 9, a lower outlet 10A and an upper outlet 10B of warm air are formed above and below, respectively. The heat exchanger 5 is provided to face the suction port 9, and a blower 6 is provided corresponding to the heat exchanger 5. An opening / closing lower damper 12A and an upper damper 12B provided respectively corresponding to the lower outlet 10A and the upper outlet 10B are a damper motor 1 serving as outlet switching means.
Switching is performed in 3. Note that the indoor unit 7 has the heat exchanger 5 shown in FIG.
It is connected to the outdoor unit by a connection pipe in the same manner as in the above.

The operation of the hot air heater having the above configuration will be described. When the operation is started and the indoor temperature is equal to or lower than the set temperature, the damper motor 13 of the indoor unit 7 operates, and FIG.
As shown in (a), the lower outlet 10A is opened by the lower damper 12A, and the upper outlet 10B is opened by the upper damper 12B.
Is closed, and warm air is blown out from the lower air outlet 10A to perform downward warm air heating. When the indoor temperature exceeds the set temperature and the heating operation is interrupted, as shown in FIG. 26B, the damper motor 13 operates to close the lower outlet 10A with the lower damper 12A and to move the upper outlet with the upper damper 12B. The outlet 10B is opened, and the room air sucked from the inlet 9 by the blower 6 is blown out from the upper outlet 10B and circulated.

[0006]

In the conventional hot air heaters shown in FIGS. 25 and 26, since the air volume of the blower 6 is reduced as the temperature of the indoor air approaches the set temperature, the temperature of the air is lowered. The warm air blown out from the outlets 10 and 10A has a high temperature, and immediately rises upward without any momentum, deteriorating the temperature distribution in the room.

That is, as shown in FIG. 27, when the indoor unit 7 of such a hot air heater is installed on the floor at the center of one wall surface of the room,
The temperature distribution at the time of the breeze is as shown in FIG. 28, and the average of the horizontal temperature at each height of the planes B and C in FIG. 27 is obtained, and the distribution is shown in FIG.
As is clear from both figures, when the amount of air from the downward outlet is small in the case of a weak wind or a breeze, the temperature of the hot air increases, and immediately rises as indicated by the arrow,
Furthermore, the warm air that has risen does not return to the floor because the suction port 9 is above the blowout ports 10 and 10A,
The temperature near the hot air heater and near the ceiling is warm, but the temperature in other places (the cold area in FIG. 28) is low. Therefore, there is a problem that the entire living room cannot be used effectively because the comfortable living space is small.

In order to solve this problem, if the air volume is set to be the same as the initial value even when the temperature of the indoor air approaches the set temperature (the required heating capacity decreases when the room temperature approaches the set temperature, so that the air volume is increased. Then, the temperature of the hot air must be lowered by lowering the temperature of the hot water, for example), causing a feeling of airflow or a feeling of cold wind, and also increasing the noise, which in turn causes the problem that the comfort is impaired.

Further, as described above, since the control is performed such that the air volume of the blower is reduced as the temperature of the drawn indoor air approaches the set temperature, the rotation speed of the blower 6 changes in accordance with the fluctuation of the room temperature. The noise value also changed along with it, which was unpleasant and unpleasant.

Further, when the temperature of the sucked indoor air becomes higher than the set temperature, the blower 6 is stopped, so that the temperature in the vicinity of the ceiling does not change much, but the temperature of the floor surface decreases relatively quickly, and the feet immediately become cold. There is a problem that.

Therefore, the purpose of the present invention is to solve the above-mentioned problems of the conventional example.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a warm air heater according to the present invention draws air from a downward warm air outlet, an upper air inlet, and an upper air inlet, which are opened only when air is blown downward. A blower that discharges air from a downward warm air outlet, a configuration of a downward warm air heater having a heat exchanger that heat-exchanges the air to generate warm air, and an upward warm air outlet that opens only when blowing upward warm air And a blower for discharging air sucked from the lower suction port, an upward cool air blowout port and an upward cool air blowout port, and a heat exchange for making only the air sent to the upward hot air blowout port a hot air flow. And a configuration of upward warm air heating having a heater.

According to the above invention, at the time of the upward warm air heating, relatively low-temperature warm air of the warm air and the cool air blown out from the upward warm air outlet and the upward cool air outlet expands and descends on the ceiling in the room. The air is then sucked again from the lower suction port of the air heater and circulated throughout the room, so that the difference in the upper and lower temperatures in the room can be reduced, and a comfortable large living space free of a sense of airflow and cool air can be obtained.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention described in claim 1 of the present invention is directed to a downward hot air outlet and an upper suction opening which are opened only when blowing downward warm air, and the air sucked from the upper suction port is supplied with a downward hot air. A blower that discharges from an outlet, a configuration of a downward warm air heating having a heat exchanger that exchanges heat with the air to generate hot air, and an upward warm air outlet and an upward cool air outlet that are opened only when blowing upward warm air. And a lower suction port, a blower that discharges air sucked from the lower suction port from an upward warm air outlet and an upward cool air outlet, and a heat exchanger that makes only the air sent to the upward warm air outlet a warm air. And a configuration of wind heating.

Then, when switching to the upward warm air heating,
The warm air and cool air blown out from the upward warm air outlet and upward cool air outlet spread on the indoor ceiling, descend further along the wall surface, reach the floor surface, and again from the lower intake of the hot air heater installed on the floor. Inhaled and circulated throughout the room.
Therefore, it is possible to reduce the difference between the upper and lower temperatures in the room and to obtain a comfortable and large living space free from a feeling of airflow and a sense of cold wind since the warm air spreads throughout the room.

The invention described in claim 2 of the present invention provides:
A downward warm air outlet, an upper inlet, a blower for discharging air sucked from the upper inlet from the downward warm air outlet, and a downward heat air heater having a heat exchanger for heat-exchanging the air to generate warm air. Configuration, an upward warm air outlet, an upward cool air outlet, a lower inlet, a blower that discharges air sucked from the lower inlet from the upward warm air outlet and the upward cool air outlet, and sends the air to the upward warm air outlet. The configuration of the upward warm air heating having a heat exchanger that makes only the air hot air, the upper intake port is opened only when the downward hot air heating is performed, and the lower intake port is opened only when the upward warm air heating is performed, the downward and upward warm air Upper and lower suction port switching control means for switching to heating, closing the downward warm air outlet during upward warm air heating and connecting the blower to the lower suction port, Ventilation path switching control means that opens the downward warm air outlet at the time of hot air heating and connects the blower to the upper suction port, and warm air / cold air outlet that opens the upward warm air outlet and the upward cool air outlet only when the warm air is heated upward The opening / closing control means and the upper / lower suction port switching control means, the ventilation path switching control means, the hot / cold air outlet opening / closing control means are controlled according to the magnitude of the heating load to switch between downward and upward warm air heating. Control means.

When the control means controls the upper and lower suction port switching control means, the ventilation path switching control means, and the hot / cold air outlet opening / closing control means to switch to the upward warm air heating, the upward warm air outlet and the upward cool air are switched. The warm and cool air blown out from the outlet spreads on the ceiling in the room, descends along the wall surface, reaches the floor, and is sucked in again from the lower suction port of the warm air heater and circulates throughout the room. Therefore,
After the heating load is reduced by the downward warm air heating, switching to upward warm air heating can reduce the vertical temperature difference in the room, and the warm air spreads throughout the room, so there is no feeling of airflow or cold air. Living space can be obtained.

Further, the invention described in claim 3 of the present invention is as follows.
The hot air blow-off opening / closing means according to claim 2, an upward cold air blow-off opening / closing means, and a hot air / cold air blow-off opening / closing control means for controlling the opening / closing of the two opening / closing means to perform a single hot air blowing operation. The apparatus is provided with a hot / cold air operation change control unit that operates alternately in the order of the hot / cold air simultaneous blowing operation.

Then, the high-temperature hot air blown into the room by the high-capacity hot-air blow-off operation by the hot / cold air operation change control means and then the relatively low-temperature hot air blown by the medium-capacity hot-cold air simultaneous blow operation. It circulates the room with the warm air. Therefore, in the upward warm air heating operation, not only can the indoor vertical temperature difference be reduced even when the heating load is large, but the high-capacity single-air blowing operation results in a relatively small air volume, and a low-noise and comfortable wide area. Living space can be obtained.

The invention described in claim 4 of the present invention provides:
According to a third aspect of the present invention, the hot / cold air operation change control means controls the cycle of the hot air single blowing operation and the hot / cold air simultaneous blowing operation so as to minimize the vertical temperature difference in the room.

Then, the hot / cold air operation change control means
The cycle between the hot air blow-off operation and the hot / cold air simultaneous blow-off operation is controlled so that the indoor vertical temperature difference is minimized, so that the indoor vertical temperature difference can be reduced and a comfortable large living space with low noise can be created. Obtainable.

According to a fifth aspect of the present invention, there is provided a blower control means for controlling the blower so that the respective operating noises of the single blow-out operation of hot air and the simultaneous blow-out operation of hot and cold air become equal. It is a thing.

The blower is controlled by the blower control means.
Since the control is performed so that the operating noises of the hot air single blowing operation and the hot / cold air simultaneous blowing operation are equal, low-noise heating with little fluctuation of the operating noise can be performed, and a comfortable living space can be obtained.

According to a sixth aspect of the present invention, there is provided the apparatus according to the second aspect, further comprising:
A hot / cold air operation in which the cold air blowing opening / closing means and the hot / cold air blowing opening / closing control means for controlling the opening / closing of the two opening / closing means are alternately operated in the order of the single cooling air blowing operation and the simultaneous hot and cold air blowing operation. It is provided with change control means.

Then, the cold air close to room temperature blown into the room by the cold air single blow operation of low capacity by the hot / cold air operation change control means, and then the relatively low temperature blown by the simultaneous hot and cold air blow operation of medium capacity. It circulates through the room with warm air. Therefore, even when the heating load is small in the upward warm air heating operation, a comfortable large living space with a small vertical temperature difference in the room can be obtained.

According to a seventh aspect of the present invention, in the sixth aspect, the hot / cold air operation change control means sets the cycle between the single blow operation of the cool air and the simultaneous blow operation of the hot and cold air to minimize the vertical temperature difference in the room. It is controlled so that

The hot / cold air operation change control means
The cycle of the cold air blow-off operation and the hot / cold air simultaneous blow-out operation is controlled such that the vertical temperature difference in the room is minimized. Therefore, it is possible to obtain a comfortable large living space with a small difference between the upper and lower temperatures in the room.

According to an eighth aspect of the present invention, there is provided the air conditioner according to the sixth aspect, further comprising a blower control means for controlling the blower such that each operation noise of the cool air single blowing operation and the hot and cold air simultaneous blowing operation is equal. It is. Then, the blower control means controls the blower so that the respective operating noises of the cool air single blowing operation and the hot / cold air simultaneous blowing operation are equal, so that a low-noise heating with less fluctuation of the operating noise can be performed, thereby providing a comfortable living space. Obtainable.

[0029]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a structural diagram showing an upward heating air heating state in Embodiment 1 of the hot air heater of the present invention, and FIG.
Is a configuration diagram showing a downward hot air heating state of the same hot air heater, and the same parts as those in the conventional example are denoted by the same reference numerals.

In FIG. 1, a system 1, a boiler 2,
An outdoor unit 4 composed of a circulation pump 3, a heat exchanger 5,
A reciprocating connection pipe 8 connects the indoor unit 7 including a blower 6 and the like disposed below the reciprocating connection pipe 8 in the order of the system 1, the boiler 2, the heat exchanger 5, and the circulation pump 3 to form a circulation circuit. are doing. 9A and 9B are upper suction ports provided in the upper rear part of the indoor unit 7 and lower suction ports provided in the lower rear part of the indoor unit 7, 10 are downward warm air outlets provided in the lower front part which is the lower part of the indoor unit 7, 14 and 15 Is an upward warm air outlet provided at the upper rear part of the upper part of the indoor unit 7 and an upward cool air outlet provided at the front upper part of the indoor unit 7, and 16 is a ventilation path switching control for switching between downward warm air heating and upward warm air heating. By means, the casing 17 of the blower 6 is rotated about the rotating shaft 18 of the blower 6, the downward warm air outlet 10 is closed, and the upward warm air outlet 14 and the upward cool air outlet 15 are used. In the hot air heating, the downward warm air outlet 10 is opened to switch to the downward hot air heating. Reference numeral 19 denotes a bypass ventilation passage for the heat exchanger 5, which guides part of the air volume of the blower 6 directly to the upwardly directed cool air outlet 15 to bypass the heat exchanger 5.
Reference numeral 20 denotes an outlet opening / closing control unit used for upward warm air heating, and a wind direction changing unit 21 for opening and closing the upward warm air outlet 14 and a wind direction changing unit for opening and closing the upward warm air outlet 15 such as a blade. It controls the opening and closing of the upward cold air outlet opening / closing means 22 such as a blade. Reference numeral 23 denotes an upper and lower suction port switching control unit, which controls the shielding plate driving unit 24a to provide a shielding plate 2 provided on the back surface of the indoor unit 7.
4 is moved up and down, and the upper suction port 9A is closed and the lower suction port 9A is closed.
When B is opened, switching is performed to upward warm air heating, and conversely, when the lower suction port 9B is closed and the upper suction port 9A is opened, switching control is performed to downward warm air heating. 25 is a control means for controlling the overall operation of the outdoor unit 4 and the indoor unit 7, and particularly receives a room temperature signal of a room temperature detecting means (not shown) provided at each suction port of the indoor unit 7, and sets the room temperature signal. When the temperature is lower than the temperature, the airflow path switching control means 16 switches to the downward hot air heating, and when the temperature is higher than the set temperature, to the upward hot air heating,
A signal is transmitted to the hot / cold air outlet opening / closing control means 20 and the upper / lower suction port switching control means 23.

The operation of the hot air heater having the above configuration will be described. The boiler-2 of the outdoor unit 4 is operated by the control means 25, and hot water is circulated to the heat exchanger 5 of the indoor unit 7 by the pump 3. Then, when the temperature of the hot water sent to the indoor unit 7 becomes equal to or higher than the predetermined temperature, the blower 6 starts operating, and when the indoor temperature is low (below the set temperature) and the heating load is large, FIG. As described above, the control unit 25 instructs the operation of the downward warm air heating. That is, the ventilation path switching control means 16 rotates the casing 17 downward to open the downward warm air outlet 10, and the warm / cold air outlet opening / closing control means 20 is directed upward by the upward warm air outlet opening / closing means 21. The warm air outlet 14 and the upward cool air outlet opening / closing means 22 close the upward cold air outlet 15 respectively, and the upper and lower intake port switching control means 23 controls the shielding plate driving means 24a to lower the shielding plate 24 to lower the lower intake port. 9
B is closed and the upper suction port 9A is opened to set downward warm air heating. Then, the indoor air sucked from the upper suction port 9A by the blower 6 exchanges heat with the heat exchanger 5 to become hot air, and is blown out toward the floor from the downward hot air outlet 10 to contribute to heating.

Next, when the room temperature rises and the heating load decreases (room temperature is equal to or higher than the set temperature) by performing the downward warm air heating as described above, the upward warm air heating operation is performed as shown in FIG. The control means 25 instructs. That is, the ventilation path switching control means 16 rotates the casing 17 upward to close the downward hot air outlet 10, and the hot / cold air outlet opening / closing control means 20 is directed upward by the upward warm air outlet opening / closing means 21. The warm air outlet 14 and the upward cool air outlet opening / closing means 22 open the upward cold air outlet 15 respectively, and the upper and lower intake port switching control means 23 controls the shielding plate driving means 24a to raise the shielding plate 24 to lower the lower intake port. 9B is opened, and the upper suction port 9A is closed to set upward warm air heating. A part of the indoor air sucked from the lower suction port 9B by the blower 6 exchanges heat with the heat exchanger 5 to become hot air, and is blown out toward the ceiling from the upward warm air outlet 14 to perform upward warm air heating. Contribute. Further, the remainder of the air sucked from the lower suction port 9B by the blower 6 passes through the bypass air passage 19 directly without passing through the heat exchanger 5, and becomes the cool air from the upward cool air outlet 15 to the ceiling direction. Blown out and contributes to upward warm air heating.

The temperature situation in the room heated by the hot air as described above will be described with reference to FIGS. In FIG. 3, the horizontal axis indicates the amount of air blown out by the upward warm air heating, and the vertical axis indicates the vertical temperature difference (for example, 180
Difference between the average temperature of the horizontal plane at 0 mm and the average temperature of the horizontal plane at 50 mm above the floor), and shows the relationship between the air volume and the vertical temperature difference between the rooms when the room is heated with a heating capacity Q that matches the heating load Q. It is a thing. FIG. 4 shows the relationship between the amount of air passing through the heat exchanger 5 and the heating capacity, with the horizontal axis indicating the amount of air passing through the heat exchanger 5 and the vertical axis indicating the heating capacity of the heat exchanger 5. It is.

Generally, in FIG. 3, the air volume is required to be V in order to make the indoor vertical temperature difference T. If all the air volume V is passed through the heat exchanger 5, the heating capacity at that time becomes Qa as is clear from FIG. However, when the indoor temperature rises and the heating load is small, this heating capacity Qa
The heating capacity becomes considerably larger than the heating capacity Q corresponding to the heating load, and the indoor temperature becomes higher than the desired temperature.

Therefore, in the present invention, the air volume Vex required for the heating capacity Q out of the air volume V sucked from the lower suction port 9B by the blower 6 passes through the heat exchanger 5 and blows out from the upward warm air outlet 14. I have to. Also,
The remaining air volume (V-Vex) of the air volume V sucked from the lower suction port 9 </ b> B by the blower 6 does not pass through the heat exchanger 5 but directly passes through the bypass air passage 19 and blows upward cold air. It blows out from the mouth 15.

Accordingly, the flow of warm air in the room in such a warm air heater is as shown in FIG. That is,
FIG. 5 shows a circulation path of hot air in a state where hot air is blown downward (dotted arrow) and in a state where air is blown upward (solid arrow) on the surface A in FIG. 27 shown in the conventional example. 27 is a wall. As is apparent from FIG. 5, in the upward blowing state (upward warm air heating with a small heating load), most of the upwardly blown air flows along the ceiling surface or the wall surface, and finally, the indoor unit that is near the floor surface Upper suction port 7
As it is sucked in from B, the warm air spreads throughout the room. Of course, it is natural that the warm air spreads throughout the room in the operation of the downward warm air heating with a large heating load.

Also, in such a hot air heater, the average of the horizontal temperature at each height on each of the surfaces B and C shown in FIG. 27 shown in the conventional example is obtained and the temperature distribution is shown in FIG. become that way. That is, the dashed line is the average temperature of the entire room, the thin solid line is the conventional example shown in FIG. 29, and the thick solid line is the present invention. As is clear from FIG. 6, the temperature difference between the upper and lower parts is smaller than that of the conventional example, and the whole room is uniform. In particular, the temperature near the wall facing the indoor unit 7 is higher than in the conventional example.

As described above, in the warm air heater, the warm air and cool air blown out from the upward warm air outlet 14 and the upward cool air outlet 15 spread on the ceiling in the room, and further descend along the wall surface to reach the floor surface. It is sucked in again from the lower suction port 9B of the warm air heater and circulates throughout the room. Therefore, after the heating load is reduced by the downward warm air heating, switching to upward warm air heating can reduce the vertical temperature difference in the room, and the warm air spreads throughout the room, so that a feeling of airflow and a feeling of cold air do not occur. A large living space can be obtained.

In the invention of the first embodiment, the outdoor unit 4 as a heat source is implemented as a separate type. However, the outdoor unit 4 is a hot air heater in which the heat source is integrated into the indoor unit 7. Is also good.

(Embodiment 2) FIG. 7 (a) is a configuration diagram showing a state of a hot air blow-off operation in Embodiment 2 of the hot air heater of the present invention, and FIG. It is a block diagram which shows the state of a cold air simultaneous blowing operation.

The second embodiment of the present invention is different from the first embodiment in that, when the warm air is heated upward, the hot air / cold air outlet opening / closing control means is controlled in accordance with the heating load to blow the hot air alone. This is the point that a hot / cold air operation change control means for alternately performing the operation and the hot / cold air simultaneous blowing operation is provided, and other portions having the same operation and effect in the same configuration are denoted by the same reference numerals and detailed description thereof is omitted. Then, the different parts will be mainly described.

7 (a) and 7 (b), reference numeral 28 denotes a hot air / cold air outlet opening / closing control means 2 according to the heating load.
This is a hot / cold air operation change control unit that controls 0 to perform the hot air single blowing operation and the hot / cold air simultaneous blowing operation alternately. Then, the hot / cold air operation change control means 28 receives the signal from the control means 25 in the downward hot air heating operation to reach the set temperature in the room to reduce the heating load and change to the upward hot air heating operation. The opening / closing control means 20 is controlled. The controlled hot air / cool air outlet opening / closing control means 20 operates the upward warm air outlet opening / closing means 21 to open the upward warm air outlet 14, while operating the upward cold air outlet opening / closing means 22 to operate the upward cold air outlet. Fifteen
Is closed and hot air alone blows out as shown in FIG.
Next, the hot air / cold air outlet opening / closing control means 20 operates the upward warm air outlet opening / closing means 21 to open the upward warm air outlet 14, and the upward cold air outlet opening / closing means 2.
2 is operated to open the upwardly directed cool air outlet 15, and FIG.
(B) Simultaneous blowing of hot and cold air is performed.

The operation of the hot air heater having the above-described configuration will be described. When the operation is started and the indoor temperature is lower than the set temperature and the heating load is large, the downwardly directed hot air outlet 10 is used as in the first embodiment. The warm air is blown out to operate the downward warm air heating.

Next, when the room temperature rises due to the downward warm air heating and reaches the set temperature and the heating load decreases, the operation of the upward warm air heating is started as in the first embodiment. If the heating load is relatively large at the beginning of the upward hot air heating operation, the hot / cold air operation change control means 28 alternately performs the hot air single blowing operation and the hot / cold air simultaneous blowing operation. That is, the ventilation path switching control means 16 rotates the casing 17 upward, closes the downward warm air outlet 10 and communicates the blower 6 with the lower suction port 9B, and the upper and lower suction port switching control means 23 includes a shielding plate. By controlling the driving means 24a, the upper suction port 9A is closed by the shielding plate 24 to set upward warm air heating. Then, the hot / cold air operation change control means 28
Is a hot air blow-off operation, so that the warm air / cold air outlet opening / closing control means 20 is controlled to open the upward warm air outlet 14 with the upward warm air outlet opening / closing means 21 while the upward cold air outlet opening / closing means 22 is turned upward. The cool air outlet 15 is closed. Then, as shown in FIG. 7A, the entire amount of air sucked from the lower suction port 9B by the blower 6 is heated by the heat exchanger 5 and blown out from the upward warm air outlet 14 to perform the hot air single blowing operation.

Subsequently, when the simultaneous hot / cold air blowing operation is started, the hot / cold air operation change control means 28 controls the hot / cold air blowing port opening / closing control means 20 and the upward warm air blowing port opening / closing means 21 blows upward hot air. The mouth 14 is opened, and the upward cold air outlet opening / closing means 22 opens the upward cold air outlet 15. Then, as shown in FIG. 7B, part of the air sucked from the lower suction port 9B by the blower 6 is heated by the heat exchanger 5 and blown out as warm air from the upward warm air outlet 14, and the remaining air Does not pass through the heat exchanger 5, passes through the bypass ventilation passage 19, and is blown out from the upwardly directed cool air outlet 15 as cold air close to the temperature of the room air, and a simultaneous hot and cold air blowing operation is performed.

A diagram showing the relationship between the heating capacity and the noise value with respect to the air volume, showing the air volume blown out on the horizontal axis and the heating capacity and the noise value on the vertical axis for the hot air heater having the above configuration. The following can be clarified from FIG. In the figure, the solid line indicates the hot air single blowing operation, and the dotted line indicates the hot and cold air simultaneous blowing operation. When the heating load Q is relatively large at the beginning of the upward warm air heating operation, the heating capacity Q shown in FIG. Now, if the same hot and cold air simultaneous blow-off upward warm air heating operation as in the first embodiment is performed, the air volume is Va and the noise value is Na. In the case of the simultaneous hot and cold air blowing operation, since the heating capacity with respect to the air volume is relatively small, Va,
Both Na have relatively large values.

However, according to the present invention, since the operation is started from the hot air blow-off operation, Qb larger than the heating capacity Q and the noise value N
The air volume Vb is set to Nb smaller than a, and then the hot and cold air simultaneous blowing operation is performed. Therefore, the air volume Vc is set to Qc smaller than the heating capacity Q and Nc smaller than the noise value Na. Then, the time ratio between the hot air single blowing operation and the hot / cold air simultaneous blowing operation is approximately (Q-Qc): (Qb-
Q), it is almost the same as the heating capacity Q. By appropriately setting the air volume in this way and alternately performing the hot air independent blowing operation and the hot / cold air simultaneous blowing operation, the operating noise value can be reduced.

(Embodiment 3) FIG. 9 is a configuration diagram of a hot air heater according to Embodiment 3 of the present invention. The third embodiment of the present invention is different from the first and second embodiments in that the warm air single blowing operation with respect to the time ratio of the hot air single blowing operation in accordance with the heating load during upward warm air heating. The point that a period storage unit that stores the time relationship is provided is provided. The other parts having the same operation and effect with the same configuration are denoted by the same reference numerals, detailed description thereof will be omitted, and different parts will be mainly described. Will be described.

In FIG. 9, reference numeral 29 denotes a cycle storage unit, which stores the relationship between the time ratio of the hot air blow-off operation and the time ratio of the hot air blow-out operation in accordance with the heating load during upward warm air heating. Then, the cycle storage unit 29 receives a signal from the hot / cold air operation change control unit 28 that has received the signal of the state of the large initial heating load in the operation of the upward hot air heating, and changes the signal corresponding to this signal to the hot / cold air operation change. Control means 28
Send to Upon receiving this signal, the hot / cold air operation change control means 28 determines the cycle of the hot air single blowing operation and the hot / cold air simultaneous blowing operation so that the vertical temperature difference in the room is minimized, and And the hot / cold air outlet opening / closing control means 20 for driving the upwardly directed cool air outlet opening / closing means 22.

The operation of the hot air heater having the above configuration will be described. When the operation is started and the indoor temperature is lower than the set temperature and the heating load is large, the downward hot air blow-out port 10 is used similarly to the first embodiment. The warm air is blown out to operate the downward warm air heating.

Next, when the indoor temperature rises due to the downward warm air heating and reaches the set temperature and the heating load decreases, the operation for upward warm air heating is started as in the second embodiment. That is, the ventilation path switching control means 16 rotates the casing 17 upward, closes the downward warm air outlet 10 and communicates the blower 6 with the lower suction port 9B, and the upper and lower suction port switching control means 23 includes a shielding plate. By controlling the driving means 24a, the upper suction port 9A is closed by the shielding plate 24 to set upward warm air heating. When the heating load is relatively large at the beginning of the upward warm air heating operation, the cycle storage unit 29 stores the relationship between the time ratio of the warm air single blowing operation and the time of the warm air single blowing operation. The hot / cold air operation change control means 28 alternately performs the hot air single blowing operation and the hot / cold air simultaneous blowing operation.

Since the hot / cold air operation change control means 28 is a single hot air blowing operation, it controls the hot / cold air blowing port opening / closing control means 20 so that the upward warm air blowing port opening / closing means 21 controls the upward hot air blowing port 14. Open, while the upward cold air outlet 15 is opened and closed by the upward cold air outlet opening / closing means 22.
Close. Then, the entire amount of air sucked from the lower suction port 9B by the blower 6 is heated by the heat exchanger 5 and blown out from the upward warm air outlet 14 to perform a single blow operation of the warm air.

Subsequently, when the hot / cold air simultaneous blowing operation is started, the hot / cold air operation change control means 28 controls the hot / cold air blowing port opening / closing control means 20 and the upward warm air blowing port opening / closing means 21 upwardly blows hot air. The mouth 14 is opened, and the upward cold air outlet opening / closing means 22 opens the upward cold air outlet 15. Then, as shown in FIG. 9, part of the air sucked from the lower suction port 9B by the blower 6 is heated by the heat exchanger 5 and blown out as warm air from the upward warm air outlet 14, and the rest of the air is subjected to heat exchange. Without passing through the vessel 5, through the bypass ventilation path 19,
5 is blown out with cold air, and a simultaneous hot and cold air blowing operation is performed.

With respect to the warm air heater having the above configuration, the horizontal axis indicates the time of the hot air blowing operation, and the vertical axis indicates the vertical temperature difference of the room. The following can be clarified from FIG. 10 showing the relationship between the differences. In the figure, parameters such as 1: 3
Indicates the time ratio of the hot air single blowing operation and the time of the hot air single blowing operation, the solid line indicates the maximum value of the indoor fluctuation temperature, and the dotted line indicates the minimum value of the indoor fluctuation temperature. Thus, even if the operation time ratio is the same, the fluctuation of the vertical temperature difference is large if the cycle of the hot air single blowing operation time and the hot and cold air simultaneous blowing operation time is large, and if the cycle is small, the fluctuation of the vertical temperature difference is large. Is small, but the vertical temperature difference is large. Points a, b, and
It is clear that the temperature difference between the upper and lower portions of the room is minimized at c.

Further, FIG. 11 shows the time ratio of the hot air blow-off operation on the horizontal axis, the time of the hot air blow-off operation on the vertical axis, and the upper and lower sides of the room indicated by points a, b and c in FIG. FIG. 9 shows the relationship between the time ratio of the hot-air blow-off operation and the time ratio of the hot-air blow-out operation when the temperature difference is minimized. According to the present invention, the relationship between the time ratio of the hot air blow-off operation and the time ratio of the hot air blow-out operation shown in FIG. 11 is stored in the cycle storage unit 29. By controlling the hot / cold air outlet opening / closing control means 20, the warm air / single air blowing operation and the hot / cold air simultaneous blowing operation are alternately performed to reduce the vertical temperature difference in the room.

(Embodiment 4) FIG. 12 (a) is a configuration diagram showing a state of a hot air blow-off operation in Embodiment 4 of the hot air heater of the present invention, and FIG. It is a block diagram which shows the state of a cold air simultaneous blowing operation. The fourth embodiment of the present invention is different from the first and second embodiments in that, in the upward warm air heating, the hot air single blowing operation and the hot / cold air simultaneous blowing operation for the required capacity according to the heating load are performed. A storage unit that stores the relationship between the operation ratio of the blower and the relationship between the required number of airflows and the number of rotations of the blower in the hot air single blowing operation and the hot / cold air simultaneous blowing operation. The signal from the storage unit stores the rotation speed of the blower 6 This is the point that the blower control means and the hot / cold air operation change control means for controlling are provided, and the same reference numerals are assigned to the other parts having the same operation and effect with the same configuration, and detailed description is omitted, and different parts are mainly described. Will be described.

In FIG. 12A and FIG.
Reference numeral 0 denotes a storage unit which stores a relationship between an operating ratio of a single hot air blowing operation and a simultaneous hot and cold air blowing operation to a required capacity according to a heating load and a single hot air blowing operation and a simultaneous hot and cold air blowing operation to a required air flow during upward hot air heating. The relationship between the number of rotations of the blower in the blowing operation is stored. And this storage unit 3
Numeral 0 is an operation of upward warm air heating, receives a signal of a state of a large initial heating load from the hot / cold air operation change control means 28, and transmits a signal corresponding thereto to the hot / cold air operation change control means 28. The hot / cold air operation change control means 28 which receives this signal controls the hot / cold air outlet opening / closing control means 20 which drives the upward warm air outlet opening / closing means 21 and the upward cold air outlet opening / closing means 22. is there. Reference numeral 31 denotes a blower control unit that receives a signal from the storage unit 30 and controls the number of rotations of the blower 6 so that each operation noise of the hot air single blowing operation and the hot / cold air simultaneous blowing operation becomes equal.

The operation of the hot air heater having the above configuration will be described. When the operation is started and the indoor temperature is lower than the set temperature and the heating load is large, the downwardly directed hot air outlet 10 is used as in the first embodiment. The warm air is blown out to operate the downward warm air heating.

Next, when the room temperature rises due to the downward warm air heating and reaches the set temperature and the heating load decreases, the operation for upward warm air heating is started as in the first embodiment. That is, the ventilation path switching control means 16 rotates the casing 17 upward, closes the downward warm air outlet 10 and communicates the blower 6 with the lower suction port 9B, and the upper and lower suction port switching control means 23 includes a shielding plate. By controlling the driving means 24a, the upper suction port 9A is closed by the shielding plate 24 to set upward warm air heating. If the heating load is relatively large in the initial stage of the upward warm air heating operation, the relationship between the operation ratio of the hot air single blow operation and the hot / cold air simultaneous blow operation to the required capacity, and the hot air single blow operation to the required air volume With the signal from the storage unit 30 storing the relationship between the fan rotation speed of the simultaneous hot and cold air blowing operation, the hot and cold air operation change control unit 28 alternately performs the hot air single blowing operation and the hot and cold air simultaneous blowing operation alternately, and The blower control means 31 controls the rotation speed of the blower 6. That is, the subsequent operation is the same as that of the second embodiment. The ventilation path switching control means 16 rotates the casing 17 upward to close the downward warm air outlet 10, and causes the blower 6 to communicate with the lower suction port 9B. The upper and lower suction port switching control means 23 is provided with the shielding plate driving means 2.
By controlling 4a, the upper suction port 9A is closed by the shielding plate 24 to set upward warm air heating. Since the hot / cold air operation change control means 28 is a single hot air blowing operation, it controls the hot / cold air outlet opening / closing control means 20 to open the upward warm air outlet 14 with the upward warm air outlet opening / closing means 21. The upward cool air outlet opening / closing means 22 closes the upward cool air outlet 15. Then, as shown in FIG. 12 (a), the entire amount of air sucked from the lower suction port 9B by the blower 6 is heated by the heat exchanger 5, and the upward hot air outlet 1
The hot air is blown out from 4 to perform a single blow operation.

Subsequently, when the simultaneous hot / cold air blowing operation is started, the hot / cold air operation change control means 28 controls the hot / cold air blowing port opening / closing control means 20 and the upward warm air blowing port opening / closing means 21 blows the hot air upward. The mouth 14 is opened, and the upward cold air outlet opening / closing means 22 opens the upward cold air outlet 15. Then, as shown in FIG. 12 (b), a part of the air sucked from the lower suction port 9B by the blower 6 is heated by the heat exchanger 5 and blown out as warm air from the upward warm air outlet 14, and the remaining air is removed. Does not pass through the heat exchanger 5, passes through the bypass ventilation passage 19, and is blown out as cold air from the upward cold air outlet 15, and performs a simultaneous hot and cold air blowing operation.

With respect to the warm air heater having the above configuration, the horizontal axis indicates the amount of air blown out, the vertical axis indicates the heating capacity and the noise value, and the relationship between the heating capacity and the noise value with respect to the air quantity will be shown. The following can be clarified from FIG. In the figure, the solid line indicates the case of the hot air blowing operation alone, and the dotted line indicates the hot and cold air simultaneous blowing operation. When the heating load Q is relatively large at the beginning of the upward warm air heating operation,
The heating capacity Q shown in FIG. Example 1
If the same hot and cold air simultaneous blowing upward warm air heating operation is performed, the air volume is Va and the noise value is Na. In the case of the simultaneous hot and cold air blowing operation, since the heating capacity with respect to the air volume is relatively small, both Va and Na have relatively large values.

However, in the present invention, as shown in FIG. 13, the noise value is smaller than that of Na, and Nb is the same in the hot air single blowing operation and the hot / cold air simultaneous blowing operation, and the heating capacity at that time is the hot air single blowing operation. In the case of the operation, Qb larger than Q is set, and in the case of the simultaneous hot and cold air blowing operation, the air volumes Vb and Vc which are set to Qc smaller than Q are set. If the time ratio between the hot air single blowing operation and the hot / cold air simultaneous blowing operation is approximately (Q-Qc) :( Qb-Q), the heating capacity Q is almost the same. By appropriately setting the air volume in this way and alternately performing the hot air independent blowing operation and the hot / cold air simultaneous blowing operation, the operating noise value can be reduced.

The storage unit 30 stores the relationship between the operating ratio of the hot air single blowing operation and the hot / cold air simultaneous blowing operation to the required heating capacity shown in FIG. 14, and the hot air single blowing operation and the hot / cold air to the required air volume shown in FIG. Since the relationship between the number of rotations of the blower in the simultaneous blowing operation is stored, the hot / cold air operation change control means 28 controls the hot / cold air outlet opening / closing control means 20 based on the signal from this, and the blower control means 31 By controlling the blower 6 in, the hot air single blowing operation and the hot and cold air simultaneous blowing operation are alternately performed,
The fluctuation of the operation noise value is small, and the operation noise value can be reduced.

FIG. 14 shows the operating ratio of the hot air blow-off operation and the hot / cold air simultaneous blow-off operation obtained from the above equation (Q-Qc) :( Qb-Q) with respect to the required heating capacity. FIG. 15 shows the number of rotations of the blower 6 with respect to the required air volume in each of the hot air single blowing operation and the hot / cold air simultaneous blowing operation. The solid line in the drawing indicates the hot air single blowing operation, and the dotted line indicates the hot / cold air simultaneous blowing operation. Is shown.

(Embodiment 5) FIG. 16 (a) is a configuration diagram showing a state of a single blow-off operation of a cool air in a fifth embodiment of the present invention, and FIG. It is a block diagram which shows the state of a simultaneous blowing operation.

The fifth embodiment of the present invention is different from the first and second embodiments in that the upward / downward air heating controls the hot air / cold air outlet opening / closing control means according to the heating load. It is a point that a hot / cold air operation change control means for alternately performing the cold air single blowing operation and the hot / cold air simultaneous blowing operation is provided, and other parts having the same operation and effect in the same configuration are denoted by the same reference numerals and detailed description. The description will be omitted, and different portions will be mainly described.

In FIG. 16A and FIG.
Reference numeral 8a denotes a hot / cold air operation change control unit that controls the hot / cold air outlet opening / closing control unit 20 in accordance with the heating load to alternately perform a single cold air blowing operation and a simultaneous hot / cold air blowing operation. Then, the hot / cold air operation change control means 28a controls the room to reach the set temperature in the downward hot air heating operation from the control means 25, and the heating load is reduced. When the indoor temperature rises in the air-heating operation and the heating load further decreases, when this signal is received, the hot / cold air outlet opening / closing control means 20 is controlled. The controlled hot air / cold air outlet opening / closing control means 20 operates the upward warm air outlet opening / closing means 21 to close the upward warm air outlet 14, while operating the upward cold air outlet opening / closing means 22 to operate the upward cold air outlet. 15 is opened, and the cool air single blowing operation is performed as shown in FIG. 16A, and then the hot air / cold air outlet opening / closing control means 20 operates the upward warm air outlet opening / closing means 21 to open the upward warm air outlet 14. In addition, the upward cold air outlet opening / closing means 22 is operated to open the upward cold air outlet 15, and a simultaneous hot and cold air blowing operation is performed as shown in FIG.

The operation of the hot air heater having the above-described configuration will be described. When the operation is started and the indoor temperature is lower than the set temperature and the heating load is large, the same as in the first embodiment, the downward hot air outlet 10 is used. The warm air is blown out to operate the downward warm air heating.

Next, when the indoor temperature rises due to the downward warm air heating and reaches the set temperature and the heating load decreases, the operation for upward warm air heating is started as in the second embodiment. If the heating load is relatively large at the beginning of the upward hot air heating operation, the hot / cold air operation change control unit 28a alternately performs the hot air single blowing operation and the hot / cold air simultaneous blowing operation.

Further, when the initial large heating load is further reduced in the upward warm air heating operation, a signal from the control means 25 is received and the hot / cold air operation change control means 28 is received.
“a” alternately performs the cold air single blowing operation and the hot / cold air simultaneous blowing operation.

That is, the hot / cold air operation change control means 28a
Is a single-cooled-air blowout operation, the hot-air / cold-air outlet opening / closing control means 20 is controlled to close the upward warm-air outlet 14 by the upward warm-air outlet opening / closing means 21, while the upward-cooling air is opened by the upward cool-air outlet opening / closing means 22. The outlet 15 is opened. Then, as shown in FIG. 16 (a), the entire amount of the air sucked from the lower suction port 9 </ b> B by the blower 6 is blown out from the upward cold air outlet 15 without being heated by the heat exchanger 5 through the bypass ventilation path 19, and the cold air is blown out. Perform single blow operation.

Subsequently, when the simultaneous hot / cold air blowing operation is started, the hot / cold air operation change control means 28a controls the hot / cold air blowing port opening / closing control means 20 and the upward warm air blowing port opening / closing means 21 blows upward hot air. The mouth 14 is opened, and the upward cold air outlet opening / closing means 22 opens the upward cold air outlet 15. Then, as shown in FIG.
As a result, a part of the air sucked from the lower suction port 9B is heated by the heat exchanger 5 and is blown out as warm air from the upward warm air outlet 14, and the rest of the air does not pass through the heat exchanger 5 and is bypassed by a ventilation passage. 19, the hot air is blown out from the upward cold air outlet 15 as cold air, and a simultaneous hot and cold air blowing operation is performed.

With respect to the warm air heater having the above-described configuration, the horizontal axis indicates the amount of air blown out, and the vertical axis indicates the heating capacity, and FIG. 17 shows the relationship between the air flow and the heating capacity. I can clarify. In the figure, the solid line indicates the cold air single blowing operation, and the dotted line indicates the hot and cold air simultaneous blowing operation. When the room temperature is high and the heating load Q is relatively small in the upward warm air heating operation, it is assumed that the heating capacity Q shown in FIG. Now, if the operation of the upward hot air heating that blows out the hot and cold air at the same time as in the first embodiment is performed, the air volume becomes Va. When the heating load is small in the simultaneous hot and cold air blowing operation, the heating capacity with respect to the air volume is relatively large, so the air volume Va has a relatively small value. Further, as described with reference to FIG. 3 of the first embodiment, if the air volume is small, the vertical temperature difference in the room increases.

In the present invention, however, the air flow rate Vb at which the heating capacity Q becomes Qb larger than the heating capacity Q during the simultaneous hot and cold air blowing operation
(Vb> Va) is set, and the air volume Vc larger than the air volume Va is set at Qc smaller than the heating capacity Q during the cool air single blowing operation. The time ratio between the cold air single blow operation and the hot / cold air simultaneous blow operation is approximately (Qb−
Q): If (Q-Qc), the heating capacity is almost the same as Q. In this way, if the appropriate air volume setting (large air volume setting) is performed and the cold air single blowing operation and the hot / cold air simultaneous blowing operation are alternately performed, the vertical temperature difference in the room can be reduced.

(Embodiment 6) FIG. 18 is a configuration diagram showing a state of simultaneous hot and cold air blowing operation in a sixth embodiment of the hot air heater according to the present invention. The invention in the sixth embodiment is different from the first and fifth embodiments in that the relationship between the time ratio of the cool air single blow operation and the time ratio of the cool air single blow operation according to the heating load during upward warm air heating. Is provided, and the other parts having the same operation and effect in the same configuration are denoted by the same reference numerals, detailed description thereof will be omitted, and different parts will be mainly described.

In FIG. 18, reference numeral 29a denotes a period storage unit.
The relationship between the time ratio of the cool air single blow operation and the time of the cool air single blow operation in accordance with the heating load during upward heating is stored. Then, the cycle storage unit 29a
When the initial large heating load is further reduced by the operation of the upward hot air heating, a signal is received from the hot / cold air operation change control means 28a which receives the signal from the control means 25,
A signal corresponding to this is transmitted to the hot / cold air operation change control means 28a. Then, the hot / cold air operation change control means 28a receiving this signal verifies the cycle of the cold air single blowing operation and the hot / cold air simultaneous blowing operation so that the indoor vertical temperature difference is minimized, and the upward hot air outlet opening / closing means. The controller controls the hot air / cold air outlet opening / closing control means 20 that drives the upward / downward cooling air outlet opening / closing means 22.

The operation of the hot air heater having the above configuration will be described. When the operation is started and the indoor temperature is lower than the set temperature and the heating load is large, the downwardly directed hot air outlet 10 is used as in the first embodiment. The warm air is blown out to operate the downward warm air heating.

Next, when the indoor temperature rises due to the downward warm air heating and reaches the set temperature and the heating load decreases, the operation for upward warm air heating is started as in the second embodiment. When the initial large heating load is further reduced in the upward hot air heating operation, the hot / cold air operation change control unit 28a receives a signal from the control unit 25, and the cold air single blowing operation and the hot / cold air simultaneous blowing operation are performed. Are performed alternately.

Since the hot / cold air operation change control means 28a is a single blow operation for the cold air, the hot / cold air outlet opening / closing control means 20 is controlled to close the upward warm air outlet 14 by the upward warm air outlet opening / closing means 21. On the other hand, the upwardly directed cold air outlet opening / closing means 22 causes the upwardly directed cold air outlet 1
Open 5. Then, the entire amount of air sucked from the lower suction port 9B by the blower 6 is not heated by the heat exchanger 5, but is blown out from the upwardly directed cool air outlet 15 through the bypass ventilation path 19 to perform the cool air single blowing operation.

Subsequently, when the simultaneous hot / cold air blowing operation is started, the hot / cold air operation change control means 28a controls the hot / cold air blowing opening / closing control means 20 and the upward hot air blowing opening / closing means 21 causes the upward hot air blowing opening / closing means 21. The mouth 14 is opened, and the upward cold air outlet opening / closing means 22 opens the upward cold air outlet 15. As shown in FIG. 18, a part of the air sucked from the lower suction port 9B by the blower 6 is heated by the heat exchanger 5 and blown out as warm air from the upward warm air outlet 14, and the rest of the air is subjected to heat exchange. The cold air is blown out from the upward cold air outlet 15 through the bypass air passage 19 without passing through the vessel 5, and the simultaneous hot and cold air blowing operation is performed.

In the hot air heater having the above-described configuration, the horizontal axis indicates the time of the single blow operation of the cold air, and the vertical axis indicates the vertical temperature difference in the room. The following can be clarified from FIG. 19 showing the relationship. In the figure, parameters such as 1: 3
The graph shows the ratio of the time of the cool air single blowing operation to the time of the hot and cold air simultaneous blowing operation. The solid line shows the maximum value of the indoor fluctuation temperature, and the dotted line shows the minimum value of the indoor fluctuation temperature. As described above, even if the operation time ratio is the same, if the period of the cool air single blowing operation time and the hot / cold air simultaneous blowing operation time period is large, the fluctuation of the indoor vertical temperature difference is large, and if the period is small, the indoor vertical temperature Although the fluctuation of the difference is small, the vertical temperature difference becomes large. It is also clear that the temperature difference between the upper and lower parts of the room at the points a, b and c shown in FIG.

Further, FIG. 20 shows the time ratio of the cool air single blowing operation on the horizontal axis, the time of the cool air single blowing operation on the vertical axis, and the vertical temperature difference in the room indicated by points a, b and c in FIG. Shows the relationship between the time ratio of the cool air single blow operation and the time of the cool air single blow operation when the value of the minimum value is minimized. According to the present invention, the relationship between the time ratio of the cool air single blowing operation and the time ratio of the cool air single blowing operation shown in FIG. 20 is stored in the cycle storage unit 29a, and the warm / cool air operation change control means 28a By controlling the cold air outlet opening / closing control means 20, the cold air single blowing operation and the hot / cold air simultaneous blowing operation are alternately performed to reduce the vertical temperature difference in the room.

(Embodiment 7) FIG. 21 (a) is a configuration diagram showing a state of a blow-off operation of a single cool air in a seventh embodiment of the warm air heater of the present invention, and FIG. It is a block diagram which shows the state of a simultaneous blowing operation. The seventh embodiment of the present invention is different from the first and fifth embodiments in that, in the upward warm air heating, the cool air single blowing operation and the hot / cold air simultaneous blowing operation for the required heating capacity according to the heating load are performed. And a storage unit storing the relationship between the operating ratio of the blower and the relationship between the required number of airflows and the blower rotation speeds of the cold air single blowing operation and the hot and cold air simultaneous blowing operation, and controls the rotation speed of the blower with a signal from the storage unit. The point that the blower control means and the hot / cold air operation change control means are provided is provided, and the portions having the same operation and effect in the other configuration are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described. I do.

In FIGS. 21A and 21B, 3
Reference numeral 0a denotes a storage unit which stores a relationship between an operating ratio of a single cold air blowing operation and a simultaneous hot and cold air blowing operation to a required capacity according to a heating load, and a single cooling air blowing operation and a simultaneous hot and cold air blowing operation to a required air flow in an upward warm air heating. The relationship between the rotation speed of the blower and the operation is stored. The storage unit 30a receives a signal from the hot / cold air operation change control unit 28a that receives the signal from the control unit 25 when the initial large heating load is further reduced by the operation of the upward hot air heating, and The corresponding signal is transmitted to the hot / cold air operation change control means 28a. The hot / cold air operation change control unit 28a that receives this signal controls the hot / cold air outlet opening / closing control unit 20 that drives the upward warm air outlet opening / closing unit 21 and the upward cold air outlet opening / closing unit 22. is there. Reference numeral 31 denotes a blower control unit that receives a signal from the storage unit 30a and controls the number of revolutions of the blower 6 so that the respective operating noises of the cold air single blowing operation and the hot / cold air simultaneous blowing operation become equal.

The operation of the hot air heater having the above-described configuration will be described. When the operation is started and the indoor temperature is lower than the set temperature and the heating load is large, the downward direction of the hot air outlet 10 is applied similarly to the first embodiment. The warm air is blown out to operate the downward warm air heating.

Next, when the indoor temperature rises due to the downward warm air heating and reaches the set temperature and the heating load decreases, the operation for upward warm air heating is started as in the first embodiment. When the indoor temperature rises and the heating load further decreases in the upward hot air heating operation, the hot / cold air operation change control unit 28a receiving the signal from the control unit 25 executes the cold air single blowing operation and the hot / cold air The simultaneous blowing operation is alternately performed, and the blower control means 31 controls the rotation speed of the blower 6. That is, since the hot / cold air operation change control means 28a is a single blow operation for the cold air, the hot / cold air outlet opening / closing control means 20 is controlled to control the upward / downward hot air outlet opening / closing means 2a.
At 1, the upward warm air outlet 14 is closed, while the upward cool air outlet opening / closing means 22 opens the upward cool air outlet 15. Then, as shown in FIG. 21A, the entire amount of air sucked from the lower suction port 9B by the blower 6 is transferred to the heat exchanger 5
The air is not heated, but is blown out from the upwardly directed cool air outlet 15 through the bypass ventilation passage 19 to perform the cool air independent blowing operation.

Subsequently, when the simultaneous hot / cold air blowing operation is started, the hot / cold air operation change control means 28a controls the hot / cold air blowing port opening / closing control means 20 and the upward hot air blowing port opening / closing means 21 upwardly blows hot air. The mouth 14 is opened, and the upward cold air outlet opening / closing means 22 opens the upward cold air outlet 15. Then, as shown in FIG.
As a result, a part of the air sucked from the lower suction port 9B is heated by the heat exchanger 5 and is blown out as warm air from the upward warm air outlet 14, and the rest of the air does not pass through the heat exchanger 5 and is bypassed. 19, the hot air is blown out from the upward cold air outlet 15 as cold air, and a simultaneous hot and cold air blowing operation is performed.

With respect to the warm air heater having the above-described configuration, the horizontal axis indicates the amount of air blown out, and the vertical axis indicates the heating capacity and the noise value. The following can be clarified from FIG. In the figure, the solid line indicates the case of the single blow operation of the cool air, and the dotted line indicates the simultaneous blow operation of the hot and cool air. When the room temperature is high and the heating load Q is small in the upward warm air heating operation, it is assumed that the heating capacity Q shown in FIG. Now, if the operation of the upward hot air heating that blows out the hot and cold air at the same time as in the first embodiment is performed, the air volume becomes Va. In the simultaneous hot and cold air blowing operation, when the heating load is small, Va has a relatively small value because the heating capacity with respect to the air volume is relatively large. Further, as described with reference to FIG. 3 of the first embodiment, if the air volume is small, the vertical temperature difference in the room increases.

In the present invention, however, as shown in FIG. 22, in the region where the air volume is larger than Va, the noise value Nb is the same between the cold air single blowing operation and the hot / cold air simultaneous blowing operation, and the heating capacity at that time is the cold air single blowing. In the case of the operation, Qb smaller than Q is set, and in the case of the simultaneous blowing operation of hot and cold air, the air volumes Vb and Vc are set so as to be Qc larger than Q. Then, assuming that the time ratio between the cool air single blowing operation and the hot / cold air simultaneous blowing operation is approximately (Qc-Q) :( Q-Qb),
It is almost the same as the heating capacity Q. In this way, by appropriately setting the air volume and alternately performing the cold air single blowing operation and the hot / cold air simultaneous blowing operation, the fluctuation of the operation noise value can be reduced.

The storage unit 30a stores the relationship between the required heating capacity shown in FIG. 23 and the operating ratio of the cold air single blowing operation and the hot / cold air simultaneous blowing operation obtained from the equation (Qc-Q) :( Q-Qb). And the relationship between the required air flow shown in FIG. 24 and the number of rotations of the blower in the cold air single blowing operation and the hot / cold air simultaneous blowing operation, so that the hot / cold air operation change control means 28a Control of the cool air outlet opening / closing control means 20 and the blower control means 3
By controlling the blower 6 in step 1, the cooling air single blowing operation and the hot / cold air simultaneous blowing operation are alternately performed, so that the fluctuation of the operation noise value is small and the vertical temperature difference in the room can be reduced.

FIG. 23 shows the operating ratio of the single cooling air blowing operation and the simultaneous hot and cold air blowing operation calculated from the above equation (Q-Qc) :( Qb-Q) with respect to the required heating capacity. Numeral 24 indicates the number of rotations of the blower 6 with respect to the required air volume in each case of the cold air single blowing operation and the hot / cold air simultaneous blowing operation. The solid line in the figure indicates the case of the cool air single blowing operation, and the dotted line indicates the case of the hot / cold air simultaneous blowing operation. Is shown.

[0093]

As described above, in the warm air heater according to the first aspect of the present invention, the downward warm air outlet and the upper air inlet which are opened only when the warm air is blown downward are sucked from the upper air inlet. A blower that discharges air from a downward warm air outlet, a configuration of a downward warm air heater having a heat exchanger that heat-exchanges the air to generate warm air, and an upward warm air outlet that opens only when blowing upward warm air And a blower for discharging air sucked from the lower suction port, an upward cool air blowout port and an upward cool air blowout port, and a heat exchange for making only the air sent to the upward hot air blowout port a hot air flow. When it is switched to upward warm air heating, the warm air and cool air blown out from the upward warm air outlet and upward cool air outlet are provided. Spreading the ceiling of the inner, and further along down the walls reaches the floor, the lower suction port of installed floor warm-air heating machines is re-sucked to circulate the entire room. Therefore, it is possible to reduce the difference between the upper and lower temperatures in the room and to obtain a comfortable and large living space free from a feeling of airflow and a sense of cold wind since the warm air spreads throughout the room.

The warm air heater according to claim 2 of the present invention comprises a downward warm air outlet, an upper inlet, a blower for discharging air sucked from the upper inlet through the downward warm air outlet, and A configuration of a downward warm air heating having a heat exchanger for heat exchange to generate warm air, an upward warm air outlet, an upward cool air outlet, a lower suction port, and an upward warm air outlet for air sucked from the lower suction port. A blower that discharges from the upward cold air outlet, a configuration of upward warm air heating having a heat exchanger that makes only the air sent to the upward warm air outlet hot air, and opens the upper suction port only during downward warm air heating, The upper and lower suction port switching control means that opens the lower suction port only when heating warm air upward and switches between downward and upward warm air heating, and closes the downward warm air outlet when heating warm air upward. And a ventilation path switching control means for opening the downward warm air outlet at the time of downward warm air heating and communicating the blower with the upper intake port, and upward warm air blowing only at the time of upward warm air heating. A hot air / cold air outlet opening / closing control means for opening a mouth and an upwardly directed cold air outlet; Control means for switching between downward and upward warm air heating to control the warm air blown from the upward warm air outlet and the cool air blown from the cool air outlet, and reach the ceiling surface as a whole. It spreads, descends further along the wall surface, reaches the floor surface, flows and is sucked in from the lower suction port of the hot air heater, so it circulates throughout the room and the temperature difference between the upper and lower rooms Small, airflow feeling, it is possible to obtain a comfortable wide living space without cool air feeling.

Further, the hot air heater according to claim 3 of the present invention, according to claim 2, controls the opening and closing of the upward warm air outlet opening and closing means, the upward cooling air outlet opening and closing means, and the opening and closing of both the opening and closing means. Hot air / cold air outlet opening / closing control means to control hot air / cold air operation, and hot / cold air operation change control means to alternately operate hot air / cold air simultaneous blowing operation in this order. The high-temperature hot air blown out in the blow-out operation is circulated by the relatively low-temperature hot air blown out in the medium-capacity simultaneous hot-cold blow-off operation, so that the indoor vertical temperature difference is small and high-performance hot air alone Since the blowing operation is performed, the air volume is small and the noise value is low, so that a comfortable living space with low noise can be obtained.

According to a fourth aspect of the present invention, in the hot air heater according to the third aspect, the hot / cold air operation change control means sets the cycle of the hot air single blowing operation and the hot / cold air simultaneous blowing operation to the indoor temperature. In order to control the cycle between the hot air blow-off operation and the hot / cold air simultaneous blow-off operation to minimize the fluctuation of the indoor vertical temperature difference, the indoor vertical temperature difference is controlled. A comfortable living space with a small difference and low noise can be obtained.

A hot air heater according to a fifth aspect of the present invention is the blower according to the third aspect, wherein the blower controls the blower such that each operation noise of the hot air single blow operation and the hot and cold air simultaneous blow operation is equal. Since the control means is provided, it is possible to obtain a low-noise comfortable living space with little fluctuation in driving noise.

[0098] The hot air heater according to claim 6 of the present invention is characterized in that, in claim 2, the open / close means for upwardly blowing hot air, the opening / closing means for upwardly blowing cold air, and the opening / closing of the two opening / closing means are controlled. And a hot / cold air operation change control means for controlling the hot / cold air outlet opening / closing control means to alternately operate in the order of a single cold air blowing operation and a simultaneous hot / cold air blowing operation. Cool air with a temperature close to room temperature blown out in the blow-out operation is circulated with relatively low-temperature hot air blown out in the medium-capacity simultaneous hot and cold air blow-out operation to obtain a comfortable living space with a small vertical temperature difference in the room be able to.

According to a seventh aspect of the present invention, in the hot air heater according to the sixth aspect, the hot / cold air operation change control means sets the cycle of the single cool air blowing operation and the simultaneous hot and cold air blowing operation to the indoor temperature. The vertical temperature difference is controlled to be minimized, and the cycle between the cold air single blow operation and the hot and cold air simultaneous blow operation is controlled so that the fluctuation of the indoor vertical temperature difference is reduced. A small comfortable living space can be obtained.

[0100] In the hot air heater according to claim 8 of the present invention, the blower control for controlling the blower so that the respective operating noises of the cold air single blowing operation and the hot and cold air simultaneous blowing operation are equal. The provision of the means makes it possible to obtain a low-noise comfortable living space with little fluctuation in driving noise.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a state of a hot air heater according to a first embodiment of the present invention at the time of upward hot air heating;

FIG. 2 is a configuration diagram showing a state during downward hot air heating of the hot air heater.

FIG. 3 is an explanatory diagram showing a vertical temperature difference of a room with respect to a total air volume at the time of upward warm air heating of the warm air heater.

FIG. 4 is an explanatory diagram showing the heating capacity of the heat exchanger with respect to the amount of air passing through the heat exchanger of the hot air heater.

FIG. 5 is an explanatory diagram of an airflow in a room of the hot air heater.

FIG. 6 is an explanatory diagram of a vertical temperature distribution in a room of the hot air heater.

FIG. 7 (a) is a configuration diagram showing a state of a hot air single blow-off operation at the time of upward warm air heating in the second embodiment of the hot air heater of the present invention. (B) At the time of upward warm air heating of the same hot air heater. , A configuration diagram showing the state of simultaneous blowing operation of hot and cold air

FIG. 8 is an explanatory diagram showing a heating capacity and a noise value with respect to an air volume of the hot air heater.

FIG. 9 is a configuration diagram at the time of upward warm air heating in Embodiment 3 of the warm air heater of the present invention.

FIG. 10 is an explanatory diagram showing a relationship between a vertical air temperature difference in a room and a time of a hot air blowout operation of the hot air heater.

FIG. 11 is an explanatory diagram showing the time of the hot air blow-out operation relative to the time ratio of the hot air heater at the time of the hot air blow-out operation;

FIG. 12 (a) is a configuration diagram showing a hot air single blowing operation state during upward warm air heating in the fourth embodiment of the hot air heater of the present invention. (B) Temperature during upward warm air heating of the same warm air heater. Configuration diagram showing the cold air simultaneous blowing operation state

FIG. 13 is an explanatory diagram showing a heating capacity and a noise value with respect to an air volume of the hot air heater.

FIG. 14 is an explanatory diagram showing the operating ratio of the hot air single blow-off operation and the hot and cold air simultaneous blow-off operation with respect to the required capacity of the hot air heater.

FIG. 15 is an explanatory diagram showing the number of rotations of a blower in a hot air blowing operation and a hot / cold air simultaneous blowing operation with respect to a required air volume of the hot air heater.

FIG. 16 (a) is a configuration diagram showing a state in which only the cool air is blown out at the time of upward warm air heating in the fifth embodiment of the hot air heater of the present invention. (B) Hot and cold air at the time of upward warm air heating of the same warm air heater. Configuration diagram showing simultaneous blowing operation state

FIG. 17 is an explanatory diagram showing the heating capacity with respect to the air volume of the hot air heater.

FIG. 18 is a configuration diagram showing a simultaneous hot and cold air blowing operation state during upward hot air heating in Embodiment 6 of the hot air heater of the present invention.

FIG. 19 is an explanatory diagram showing the relationship between the vertical temperature difference in a room and the time of a single blow-off operation of the cool air during upward warm air heating of the warm air heater.

FIG. 20 is an explanatory diagram showing the cool air blowing operation time with respect to the time ratio of the cool air single blowing operation during upward warm air heating of the same hot air heater.

FIG. 21 (a) is a configuration diagram showing a state in which only the cool air is blown out during upward warm air heating in the seventh embodiment of the warm air heater of the present invention. (B) Hot and cold air during upward warm air heating of the same warm air heater. Configuration diagram showing simultaneous blowing operation state

FIG. 22 is an explanatory diagram showing a heating capacity and a noise value with respect to an air volume of the hot air heater.

FIG. 23 is an explanatory diagram showing an operation ratio of a cool air single blowing operation and a hot / cold air simultaneous blowing operation with respect to a required capacity of the hot air heater.

FIG. 24 is an explanatory diagram showing the number of rotations of a blower in a single blow operation of a cool air and a simultaneous blow operation of a hot and cold air with respect to a required air volume of the hot air heater.

FIG. 25 is a configuration diagram showing a first example of a conventional hot air heater.

FIG. 26A is a configuration diagram illustrating downward hot-air heating in a second example of a conventional hot-air heater, and FIG. 26B is a configuration diagram illustrating upward warm-air heating of the same hot-air heater.

FIG. 27 is an interior perspective view for explaining a temperature distribution in a first example of a conventional hot air heater.

FIG. 28 is an explanatory diagram showing a temperature distribution in a room of the hot air heater.

FIG. 29 is an explanatory diagram of a vertical temperature distribution in a room of the hot air heater.

[Explanation of symbols]

 Reference Signs List 5 heat exchanger 6 blower 9A upper suction port 9B lower suction port 14 upward warm air outlet 15 upward cool air outlet 16 ventilation path switching control means 19 bypass ventilation path 20 hot air / cold air outlet opening / closing control means 21 upward warm air blowing Mouth opening / closing means 22 Upward / cold air outlet opening / closing means 23 Up / down suction port switching control means 25 Control means 28, 28a Hot / cold air operation change control means 29, 29a Periodical storage unit 30, 30a Storage unit

Claims (8)

[Claims] 1. A downward warm air outlet and an upper air inlet, which are opened only when warm air is blown downward, a blower for discharging air sucked from the upper air inlet through the downward warm air outlet, and exchanging heat with the air. The configuration of the downward warm air heating having a heat exchanger that makes hot air, and the upward warm air outlet, upward cool air outlet, lower suction port, and air inlet that opens only when blowing out the hot air upward, and the air sucked from the lower suction port A warm air heater having an upward warm air outlet, an air blower discharged from the upward cool air outlet, and an upward warm air heating configuration having a heat exchanger for heating only air sent to the upward warm air outlet. 2. An air blower for discharging air sucked from the upper suction port from the downward hot air outlet, and a heat exchanger for heat-exchanging the air to generate hot air. Downward hot air heating configuration, upward warm air outlet, upward cool air outlet, lower suction port,
A configuration of an upward warm air heating system having a blower for discharging air sucked from the lower suction port from an upward warm air outlet and an upward cool air outlet, and a heat exchanger for making only air sent to the upward warm air outlet a warm air. The upper suction port is opened only when the warm air is heated downward, the lower suction port is opened only when the warm air is heated upward, and the upper and lower suction port switching control means for switching between the downward and upward warm air heating; Ventilation path switching control means for closing the wind outlet and connecting the blower to the lower suction port, opening the downward warm air outlet during downward warm air heating, and communicating the blower to the upper suction port, and only for upward warm air heating A warm air / cold air outlet opening / closing control means for opening an upward warm air outlet and an upward cool air outlet; Suction port switching control means, air passage switching control unit, hot air-cold air outlet opening and closing control means warm air heater and control means for switching the downward and upward warm-air heating by controlling. 3. A hot air blow-off port opening / closing means, an upward cold air blow-off port opening / closing means, and a hot air / cold air blow-off port opening / closing control means for controlling the opening / closing of the two opening / closing means. 3. The hot air heater according to claim 2, further comprising a hot / cold air operation change control unit that operates alternately in a simultaneous hot / cold air blowing operation order. 4. The hot air heating apparatus according to claim 3, wherein the hot / cold air operation change control means controls a cycle of the hot air single blowing operation and a hot / cold air simultaneous blowing operation so as to minimize the vertical temperature difference in the room. Machine. 5. The hot air heater according to claim 3, further comprising a blower control means for controlling the blower so that each operation noise of the hot air single blowing operation and the hot / cold air simultaneous blowing operation becomes equal. 6. An operation for opening and closing an upward warm air outlet, an upward and downward cool air outlet opening / closing means, and a hot / cold air outlet opening / closing control means for controlling the opening / closing of both of the opening / closing means, thereby performing a single cold air blowing operation and a warm air. 3. The hot air heater according to claim 2, further comprising a hot / cold air operation change control unit that operates alternately in the order of the simultaneous cool air blowing operation. 7. The hot air heater according to claim 6, wherein the hot / cold air operation change control means controls a cycle of the cool air single blowing operation and a hot / cold air simultaneous blowing operation so as to minimize the vertical temperature difference in the room. . 8. The hot air heater according to claim 6, further comprising a blower control means for controlling the blower so that each operation noise of the cool air single blowing operation and the hot / cold air simultaneous blowing operation becomes equal.