JP2003121006A - Warm air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warm air heater having a humidifying function, which generates no air mixing inside a water supply pump and causes no failure or abnormal sound of the water supply pump. SOLUTION: The warm air heater is configured so that an heat exchanger is provided wherein combustion hot air is supplied from a thermal-power adjustable combustion chamber to a blast passage in a main body case; warm air after being heat-exchanged by blowing air from an air inlet to a heat exchange part by means of an air blower is supplied through an outlet to the indoor; the humidifying dish, to which water of a water supply tank is supplied by a water supply pump, is provided in the blast passage on the leeward from the heat exchanger; and humidifying water of the humidifying dish is evaporated by warm air and then supplied to the indoor with warm air. Further, the warm air heater comprises a dish water detection means 44 for detecting the presence or absence of humidifying water in the humidifying dish 32 and a controller 60A for controlling the water supply pump 39 to operate intermittently for a given period T when the dish water detection means 44 detects the absence of humidifying water in the humidifying dish 32.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a petroleum hot air heater,
The present invention relates to a warm air heater such as a gas warm air heater, a fan convector, and an electric fan heater, and particularly to a warm air heater having a humidifying function.

[0002]

2. Description of the Related Art The applicant has previously proposed Japanese Patent Application No. 2000-353085 and Japanese Patent Application No. 2001-24170 as a hot air heater having a humidifying function of this kind. Japanese Patent Application 2000
In −353085, a convection fan and a heating source are arranged in a ventilation passage formed in a main body case having an air suction port and a warm air outlet, and a dish receiver is provided in the ventilation passage on the leeward side of the heating source. A body is provided, and a humidifying tray in which humidifying water is stored is detachably accommodated in this dish receiving body, and the humidifying water in a water supply tank pumped up by a water supply pump is supplied to this humidifying tray through a water supply pipe. It is composed. Further, by making the dish receiving body a dish shape, it receives the humidifying water overflowing from the humidifying dish and stores it up to a predetermined water level, and when the water reaches or exceeds the predetermined water level, the water falls through the return pipe to the inside of the water supply tank. Returned to. This water supply tank receives water from a cartridge type water supply tank (hereinafter referred to as a cartridge tank) and maintains a predetermined water level. And
The water returned to the water supply tank via the return pipe and the water supplied from the cartridge tank and stored in the water supply tank are pumped up by the water supply pump as humidifying water.

Further, in Japanese Patent Application No. 2001-24170, the controller has at least one of the steam generators after the start of operation.
It is equipped with forced-air heating execution means for rotating the air, and then operates the water supply pump to supply the humidification water to the humidification tray.The operation of the water supply pump operates the controller according to the detected value of the temperature detection means. And follow the instructions.

[0004]

However, in the above-described warm air heater with a humidifying function, the water supply pump associated with the water supply device is operated continuously during water supply by operating the water supply pump continuously. Humidification water was supplied. At this time, air may be trapped inside the water supply pump at the start of operation of the water supply pump, which may cause failure of the water supply pump or abnormal noise.

Further, when the amount of humidified water supplied from the cartridge tank of the water supply device to the water supply tank is smaller than the amount supplied by the water supply pump to the humidification tray, air may be trapped inside the water supply pump. After all, there was a case where it caused a malfunction of the water supply pump or an abnormal noise.

The present invention has been made in view of the above-mentioned circumstances, in which air trapping does not occur inside the water supply pump,
It is an object of the present invention to provide a hot air heater having a humidifying function that does not cause a malfunction of a water supply pump or abnormal noise.

[0007]

In order to achieve the above object, according to the present invention as set forth in claim 1, an air flow passage for connecting an air inlet and an air outlet is formed in a main body case, and the air flow passage is formed. A heat exchanging unit to which combustion hot air is supplied from the combusting unit is provided in the air flow path, and air from the air suction port is applied to the heat exchanging unit by a blower so that hot air after heat exchange is passed through the blowout port. The inside of the humidification tray to which the water in the water supply tank is supplied by the water supply pump in the air flow passage on the leeward side of the heat exchange section, and the humidification inside the humidification tray is performed by the warm air. In a warm air heater adapted to evaporate water and supply it to the room together with this warm air, dish water detecting means for detecting the presence or absence of humidifying water in the humidifying dish, and this dish water detecting means If it is detected that there is no humidifying water, operate the water supply pump. Scheduled period of is characterized in that a controller for controlling so as to intermittently operated.

According to the second aspect of the present invention, a blower flow passage is formed in the main body case to connect the air suction port and the blowout port, and the hot air is supplied from the combustion unit to the heat exchange. The air is blown from the air suction port to the heat exchange section by a blower to supply warm air after heat exchange into the room through the blowout port, and further downwind than the heat exchange section. A humidifying tray to which the water in the water supply tank is supplied by the water supply pump is arranged in the air flow passage on the side, and the humidifying water in the humidifying tray is evaporated by the warm air and supplied to the room together with the warm air. In the warm air heater set forth above, dish water detecting means for detecting the presence or absence of humidifying water in the humidifying tray, and if the dish water detecting means detects that there is no humidifying water in the humidifying tray, The pump is operated for a specified time and this water supply pump Operation beginning is intermittently by driving this feed water pump, characterized in that the subsequent provided a control unit for controlling so as to continuously operate the remaining time.

According to the third aspect of the present invention, there is formed an air flow passage connecting the air inlet and the air outlet in the main body case, and the heat exchange in which combustion hot air is supplied from the combustion unit to the air flow passage. The air is blown from the air suction port to the heat exchange section by a blower to supply warm air after heat exchange into the room through the blowout port, and further downwind than the heat exchange section. A humidifying tray to which the water in the water supply tank is supplied by the water supply pump is arranged in the air flow passage on the side, and the humidifying water in the humidifying tray is evaporated by the warm air and supplied to the room together with the warm air. In the warm air heater, the dish water detecting means for detecting the presence / absence of humidifying water in the humidifying tray and the tank water detecting means for detecting the presence / absence of humidifying water in the water supply tank are provided. If the means detects that there is no humidifying water in the humidifying dish, And starts the operation of the water supply pump,
Further, when the tank water detecting means for detecting the presence or absence of the humidifying water in the water supply tank detects that the humidifying water in the water supply tank is absent, the operation of the water supply pump is intermittently operated. It is characterized in that a controller is provided to operate.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 6. In FIGS. 1 to 6, reference numeral 1 is a temperature of an FF type oil warm air heater or the like. This is a main body case of a wind-heater, and the main body case 1 is composed of a case main body 2 and a front panel 3 which is detachably attached to the front surface of the case main body 2, and an upper portion of a rear surface portion of the case main body 2 Is provided with an air suction port (not shown) equipped with a removable filter (not shown), while the front panel 3 has a plurality of horizontal guide vanes 5 and 5 on the lower part and a left side part. A horizontally long hot air outlet grill 7 having a hot air outlet (air outlet) 6 is provided.

The hot-air blowing grill 7 is detachably attached to the case body 2 with a set screw 4, and as shown in FIG. 2, by removing the warm-air blowing grill 7 from the case body 2, The humidifying tray insertion / removal opening 8 is formed below the front panel 3.

An operation switch 9 for turning on / off the equipment, a humidification switch 10 for turning on / off the humidification operation, and a temperature setting switch 11 for setting a desired room temperature are provided on the upper center of the front panel 3. An operation unit 12 having switches and the like and other switches, and a display unit 13 for displaying an operation mode of the device, a set temperature, a room temperature, and the like are provided.

An air flow passage 15 is formed in the case body 2 so as to extend from the air inlet (not shown) to the warm air outlet 6. An oil burner (combustion section) 16 for vaporizing and burning petroleum fuel such as kerosene is provided in the air flow passage 15.
A heat exchange part 21 having a combustion cylinder 17 connected to the combustion cylinder 17, a connection box 18 connected to the combustion cylinder 17, a plurality of heat exchange pipes 19 and 19 and an exhaust collecting box 20, and the exhaust collecting box 20.
And an exhaust pipe 22 for discharging the combustion exhaust gas after heat exchange to the outside of the room.

An oil leveler L for storing petroleum fuel sent from an oil supply pipe (not shown) is housed in the lower part of one side of the case body 2, and this oil leveler L is stored.
The oil fuel therein is supplied to the oil burner 16 via the fuel pump 23 and the fuel supply pipe 24.

Reference numeral 25 is an air supply blower equipped with a burner motor 26 for supplying combustion air to the oil burner 16. This air supply blower 25 has an air supply pipe 27 connected to one side surface thereof.
The other end is connected to the oil burner 16.

A blower 28 for warm air is provided in the upper part of the case body 2 so as to face the air inlet (not shown).
The blower 28 for warm air is provided with the fan motor 2
9 and a cross flow fan 30 (convection fan) driven by the fan motor 29, a fan cover 31, etc., and sucked into the case main body 2 from an air inlet (not shown) via a filter. The indoor air is blown downward toward the heat exchange section 21.

Furthermore, on the right side of the case main body 2, a control device 60 for instructing a command from a signal from an operation section 12 for performing various operations and a display section 13 for performing various displays.
The control device 60 is provided with a microcomputer (controller) 60A that controls all the devices.

A mounting plate portion 33 for mounting the humidifying tray 32 is provided in the air flow passage 15 on the leeward side of the heat exchange portion 21, that is, in the lower portion of the case body 2. A humidifying tray 32 made of a metal plate (stainless steel plate) for storing humidifying water to be evaporated by warm air is placed on the placing plate portion 33, and a ceramic fiber is used as a base material in the humidifying tray 32. An evaporation promoting body 34 (humidifying filter) having air permeability and water absorption is attached. Humidification water is supplied from the water supply device 35 to the humidification tray 32.

The water supply device 35 has a cartridge tank 37 which can be put in and taken out from one side of the case body 2 by opening an opening / closing lid 36 provided on one side of the top surface 2A of the case body 2. This cartridge tank 37
A synthetic resin water supply tank 38 for receiving humidifying water from
A tank water level detector (tank water detecting means) 61 for detecting the presence or absence of humidifying water from the water level of the humidifying water in the water supply tank 38.
And an electric water supply pump 39 for pumping the humidifying water in the water supply tank 38, and a water supply pipe 40 connected to the electric water supply pump 39 for supplying water to the humidifying tray 32. The tank water level detector 61 and the electric water supply The pump 39 communicates with the above-mentioned control device 60 via lead wires 61A and 39A, respectively.

The water supply tank 38 is detachably fixed to the lower part of the case main body 2 and has a substantially constant amount of water stored therein. That is, the cartridge tank 37
Has a valve-equipped cap C at the bottom thereof and supplies water for humidification to the water supply tank 38 in a substantially constant amount.

The humidifying tray 32 is placed on the placing plate portion 33. The humidifying tray 32 is made by drawing a stainless steel plate, and a raised portion is formed in the substantially central portion of the bottom wall thereof. (Not shown) is provided. And this humidifying dish 32
A temperature detector (dish water detecting means) 44 is fixedly penetrated through the mounting plate portion 33 so as to abut the raised portion (not shown) in order to detect the temperature. This temperature detector 44
Is for detecting the presence or absence of humidifying water in the humidifying dish 32.
That is, when the humidifying water in the humidifying tray 32 is exhausted, the temperature of the raised portion of the bottom wall rises and the temperature of the temperature detector 44 also rises, and it is detected that there is no humidifying water. On the contrary, when the humidifying water is supplied into the humidifying tray 32, the temperature of the raised portion of the bottom wall of the humidifying tray 32 is lowered, and the temperature of the temperature detector 44 is also lowered to detect the presence of the humidifying water. The microcomputer 60A is configured to receive a signal of the temperature of the humidifying tray 32 detected by the temperature detector 44 via the lead wire 44A and transmit the instruction to the electric water supply pump 39. There is.

Reference numeral 45 is a tray provided adjacent to the right side portion of the mounting plate portion 33. The inside of the tray 45 communicates with the inside of the water tank 38 through the return pipe 47 having a slightly downward slope from the tray 45 to the water tank 38.
The humidifying water that has overflowed from is received by the pan 45 and returned to the water supply tank 38 through the return pipe 47.

In the above structure, when the operation switch 9 is turned on to start the operation of the equipment, the oil burner 16 is supplied with the combustion air from the air supply blower 25 taken from the outside and the fuel pump 23 By the operation, petroleum fuel is supplied from the fuel supply pipe 24, and the oil burner 16 starts combustion. When the combustion of the oil burner 16 is started, the combustion gas is discharged from the exhaust pipe 22 to the outside through the heat exchange section 21 including the combustion cylinder 17 and the heat exchange pipe 19.

Here, when the temperature of the connecting box 18 of the heat exchange section 21 reaches a high temperature above a predetermined temperature, the warm air blower 28 is operated, and the indoor air purified by the filter is sucked into the air inlet (not shown). Is sucked into the main body case 1 from the inside, and this air is accelerated by the cross flow fan 30 (convection fan) of the blower 28 for warm air and is blown toward the heat exchange pipe 19 of the heat exchange section 21, so that the entire connecting box 18 To form warm air, which is discharged from the warm air outlet 6 of the warm air blowing grill 7 toward the front of the main body case 1 to heat the room. At this time, warm air is applied to the humidifying plate 32 and the evaporation promoting body 34 installed on the downstream side of the combustion cylinder 17 of the heat exchanging unit 21, and the humidifying water stored in the humidifying plate 32 is heated and evaporated at the same time. The humidifying water sucked up by the evaporation promoting body 34 evaporates, and these are discharged from the warm air outlet 6 together with the warm air, and the room is heated and warmed at the same time.

Next, the operation of the water supply device 35 will be described. The water supply pump 39 attached to the water supply device 35 is configured so that the microcomputer 60A receives a signal according to the temperature of the humidifying tray 32 detected by the temperature detector 44, and operates and stops according to the instruction. . Therefore, when the humidifying water in the humidifying dish 32 evaporates and decreases to a raised portion (not shown) on the substantially bottom wall, the temperature detector 44 sends the signal to the microcomputer 60A and the humidifying dish 32 is humidified. The microcomputer 60A transmits the instruction to the electric water supply pump 39, and issues a request command (S1) to operate and supply water.

At this time, the humidifying water from the cartridge tank 37 is stored in the water supply tank 38, but the tank water level detector 61 provided in the water supply tank 38 contains the humidifying water in the water supply tank 38. If it is determined that the electric water supply pump 39 starts operating (S2).

Then, the microcomputer 60A is
As shown in FIGS. 5 to 6, the water supply pump 39 is operated for about 3 seconds (T1) for a predetermined time T of about 90 seconds,
An instruction is given to perform water supply by intermittent operation (S3) with one cycle of stop (T2) for about 6 seconds. For this reason,
Air remaining inside the electric water supply pump 39 escapes, and the possibility of failure of the electric water supply pump 39 due to idle rotation or generation of abnormal noise is greatly reduced.

According to the first embodiment described above, the air flow passage 15 that connects the air suction port (not shown) and the air outlet 6 is formed in the main body case 1, and the combustion section 16 is formed in the air flow passage 15.
A heat exchange section 21 to which combustion hot air is supplied is provided, and the air from the air suction port is applied to the heat exchange section 21 by a blower 28 so that hot air after heat exchange is passed through the blowout port 6. A humidifying tray 32, which supplies water in a water supply tank 38 by a water supply pump 39, is provided in the air flow passage 15 on the leeward side of the heat exchange section 21 while supplying the air to the room, and the humidification is performed by the warm air. In the warm air heater that evaporates the humidifying water in the dish 32 and supplies it to the room together with this warm air,
Dish water detecting means 44 for detecting the presence or absence of humidifying water in the humidifying tray 32, and when the dish water detecting means 44 detects that there is no humidifying water in the humidifying tray 32, the water supply pump 3
Since the controller 60A for controlling the operation of 9 to be intermittently operated for a predetermined time T is provided, the air remaining inside the electric water supply pump 39 is released, and the electric water supply pump 39 is driven by idle rotation. The possibility of malfunction and abnormal noise is greatly reduced.

(Second Embodiment) Next, a second embodiment of the present invention.
1 to 4 and FIGS. 7 to 8, the same components as those in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted.

The second embodiment will be described with reference to FIGS.
And as shown in FIGS. 7 to 8, when the humidifying water in the humidifying dish 32 evaporates and decreases to a raised portion (not shown) on the substantially bottom wall, the temperature detector 44 sends the signal to the microcomputer 60A. Then, the humidifying tray 32 is notified that there is no humidifying water, and the microcomputer 60A transmits the instruction to the electric water supply pump 39 and issues a request command (S6) to operate and supply water.

At this time, the humidifying water from the cartridge tank 37 is stored in the water supply tank 38, but the tank water level detector 61 provided in the water supply tank 38 contains the humidifying water in the water supply tank 38. If it is determined that the electric water supply pump 39 starts operating (S7).

After the operation is started, the operation is stopped at a predetermined time T of about 90 seconds, but at the beginning of the operation, the intermittent operation (S
8) During this time, the intermittent operation is about 3 seconds (T1)
Then, stop (T2) for about 6 seconds is performed as one cycle. Then, the water supply after the intermittent operation is continuously operated for the remaining time (T0) of about 90 seconds of the predetermined time T (S1).
1) Since the controller 60A for controlling to perform is provided,
Air remaining inside the electric water supply pump 39 escapes, and the possibility of failure of the electric water supply pump 39 due to idle rotation or generation of abnormal noise is greatly reduced.

According to the second embodiment described above, the air flow passage 15 that connects the air suction port (not shown) and the air outlet 6 is formed in the main body case 1, and the combustion section 16 is formed in the air flow passage 15.
A heat exchange section 21 to which combustion hot air is supplied is provided, and the air from the air suction port is applied to the heat exchange section 21 by a blower 28 so that hot air after heat exchange is passed through the blowout port 6. A humidifying tray 32, which supplies water in a water supply tank 38 by a water supply pump 39, is provided in the air flow passage 15 on the leeward side of the heat exchange section 21 while supplying the air to the room, and the humidification is performed by the warm air. In the warm air heater that evaporates the humidifying water in the dish 32 and supplies it to the room together with this warm air,
Dish water detecting means 44 for detecting the presence or absence of humidifying water in the humidifying tray 32, and when the dish water detecting means 44 detects that there is no humidifying water in the humidifying tray 32, the water supply pump 3
A controller for controlling the operation of the water supply pump 9 for a predetermined period of time T, controlling the water supply pump 39 to be intermittent at the beginning of operation of the water supply pump 39, and continuously operating the remaining time (T0) thereafter. Because it has a configuration of 60A,
Air remaining inside the electric water supply pump 39 escapes, and the possibility of failure of the electric water supply pump 39 due to idle rotation or generation of abnormal noise is greatly reduced.

(Third Embodiment) Next, a third embodiment of the present invention.
1 to 4 and 9 to 10, the same components as those in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted.

The third embodiment will be described with reference to FIGS.
As shown in FIGS. 9 to 10, the water supply device 35 includes an opening / closing lid 36 provided on one side of the top surface 2 </ b> A of the case body 2.
The cartridge tank 37 that can be put in and taken out from one side of the case body 2 by opening the water tank, the synthetic resin water supply tank 38 that receives the humidification water from the cartridge tank 37, and the humidification tank 38. A tank water level detector (tank water detection means) 61 that detects the presence or absence of humidifying water based on the water level of the water, an electric water supply pump 39 that pumps up the humidifying water in the water supply tank 38, and this electric water supply pump 3
A water supply pipe 40 connected to 9 for supplying water to the humidifying tray 32
The tank water level detector 61 and the electric water supply pump 39 are connected to the control device 60 via lead wires 61A and 39A, respectively. In addition, electric water pump 3
9 has an inlet 39B for humidifying water in the water supply tank 38.

The water supply tank 38 is detachably fixed to the lower part of the case body 2, and a substantially constant amount of water is kept inside the case 2 and stored therein. That is, a cap C with a valve is provided at the bottom of the cartridge tank 37, and the humidifying water is supplied to the water supply tank 38 in a substantially constant amount.

Next, the operation of the water supply device 35 will be described. The water supply pump 39 attached to the water supply device 35 is configured so that the microcomputer 60A receives a signal according to the temperature of the humidifying tray 32 detected by the temperature detector 44, and operates and stops according to the instruction. . Therefore, when the humidifying water in the humidifying dish 32 evaporates and decreases to a raised portion (not shown) on the substantially bottom wall, the temperature detector 44 sends the signal to the microcomputer 60A and the humidifying dish 32 is humidified. The microcomputer 60A transmits the instruction to the electric water supply pump 39, and issues a request command (S14) to operate and supply water.

At this time, the humidifying water from the cartridge tank 37 is stored in the water supply tank 38, and the water level H is maintained at a substantially constant amount, but the tank water level detector 61 constantly monitors the presence or absence of the humidifying water. If it is detected that there is humidifying water, the electric water supply pump 39 starts operating and supplies water (S15).
To start.

The humidifying water stored in the water supply tank 38 starts to decrease when the electric water supply pump 39 starts operating. At this time, when the supply amount of the humidifying water from the cartridge tank 37 to the water supply tank 38 is smaller than the supply amount supplied to the humidifying tray by the continuous operation of the water supply pump 39, the water level in the water supply tank 38 is As a result, the tank water level detector 61 detects the absence of humidifying water (S17).

When the tank water level detector 61 detects the absence of humidifying water, the electric water supply pump 39 that has been operating until then is forcibly operated for about 3 seconds (T1) and stopped for about 6 seconds (T2).
The operation is intermittent (S18). Therefore, the amount of humidifying water supplied from the water supply pump 39 to the humidifying tray 32 decreases, the water level in the water supply tank 38 rises again, and the tank water level detector 61 releases the absence of humidifying water. Then, the electric water supply pump 39, which has been intermittently operated until then, returns to the operating state before the tank water level detector 61 detects the absence of the humidifying water and operates again. At this time, since the upper position H2 of the intake port 39B of the electric water supply pump 39 is located in the water in the water supply tank 38, there is no possibility that air will be trapped inside the electric water supply pump 39 and the electric power supply by idling The possibility of failure of the water supply pump 39 and generation of abnormal noise is greatly reduced.

As described above, according to the third embodiment, the air flow passage 15 that connects the air suction port (not shown) and the air outlet 6 is formed in the main body case 1, and the air flow passage 15 is burned. The heat exchange section 21 to which the combustion hot air is supplied from the section 16 is arranged, and the air from the air suction port is applied to the heat exchange section 21 by the blower 28 so that the warm air after heat exchange is applied to the blowout port 6. A humidifying tray 32, which supplies water from a water supply tank 38 by a water supply pump 39 to the inside of the air flow passage 15 on the leeward side of the heat exchange section 21, while supplying the heat to the room through the hot air. In the warm air heater configured to evaporate the humidified water in the humidifying tray 32 and supply the humidified water to the room together with the warm air, the dish water detecting means 44 for detecting the presence or absence of the humidified water in the humidifying tray 32; Tank for detecting the presence or absence of humidifying water in the water supply tank 38 When the dish water detecting means 44 detects that there is no humidifying water in the humidifying tray 32, the operation of the water supply pump 39 is started, and the humidifying water in the water supply tank 38 is provided. When the tank water detecting means 61 for detecting the presence or absence of water detects that there is no humidifying water in the water supply tank 38, the controller 60A for controlling the operation of the water supply pump 39 to operate intermittently.
Since the configuration is provided, even if the amount of humidified water supplied from the cartridge tank 37 to the water supply tank 38 is smaller than the amount supplied by the water supply pump 39 to the humidification tray 32, air is trapped inside the electric water supply pump 39. It is unlikely that the electric water supply pump 39 will be out of order or that an abnormal sound will be generated.

Although three types of embodiments of the present invention have been described above, the present invention is not limited to this. For example, an example of the heat exchange section 21 heated by the petroleum burner 16 as a warm air heating source. However, it may be a heat exchange section heated by a gas burner, hot water, an electric heater, or the like.

[0043]

According to the present invention as set forth in claim 1, a blower flow passage is formed in the main body case to connect the air suction port and the blowout port, and the combustion hot air is supplied from the combustion unit to the blower flow passage. The heat exchange part is provided, and the air from the air suction port is applied to the heat exchange part by a blower to supply the warm air after heat exchange to the room through the outlet and the heat exchange. A humidifying plate to which the water in the water supply tank is supplied by a water supply pump is arranged in the air flow passage on the leeward side of the section, and the humidifying water in the humidifying plate is evaporated by the warm air and the warm air is supplied to the room. In the hot air heater adapted to supply to the dish heater, the dish water detecting means for detecting the presence or absence of the humidifying water in the humidifying tray, and the case where the dish water detecting means detects that there is no humidifying water in the humidifying tray. Is to operate the water supply pump intermittently for a predetermined time. Since it is equipped with a controller to control, it constantly operates intermittently when supplying humidifying water to the electric water supply pump, so air remaining inside escapes and the electric water supply pump malfunctions due to idle rotation. The possibility of abnormal noise is greatly reduced.

According to the second aspect of the present invention, an air flow passage is formed in the main body case to connect the air inlet and the air outlet, and the combustion hot air is supplied from the combustion unit to the air flow passage. A heat exchange unit is provided, and air from the air suction port is applied to the heat exchange unit by a blower to supply warm air after heat exchange into the room through the air outlet, and from the heat exchange unit. Also, a humidifying plate to which the water in the water supply tank is supplied by the water supply pump is installed in the air flow passage on the leeward side, and the warm air evaporates the humidifying water in the humidifying plate and supplies it to the room with this warm air. In the warm air heater configured to do, if the dish water detecting means for detecting the presence or absence of humidifying water in the humidifying dish, and the humidifying water in the humidifying dish is detected by this dish water detecting means is no, The water supply pump is operated for a predetermined time and the water supply port At the beginning of the operation of the pump, the water pump is operated intermittently and a controller is installed to control it so that the remaining time after that is continuous.Therefore, when supplying humidifying water to the electric water pump, it is always intermittent. Since the operation is performed in a static manner, the air remaining inside escapes, and the possibility of malfunction of the electric water supply pump due to idle rotation and generation of abnormal noise is greatly reduced.

According to the third aspect of the present invention, an air flow passage connecting the air suction port and the air outlet is formed in the main body case, and the combustion hot air is supplied to the air flow passage from the combustion unit. A heat exchange unit is provided, and air from the air suction port is applied to the heat exchange unit by a blower to supply warm air after heat exchange into the room through the air outlet, and from the heat exchange unit. Also, a humidifying plate to which the water in the water supply tank is supplied by the water supply pump is installed in the air flow passage on the leeward side, and the warm air evaporates the humidifying water in the humidifying plate and supplies it to the room with this warm air. In the warm air heater configured to do, the dish water detecting means for detecting the presence or absence of humidifying water in the humidifying tray, and the tank water detecting means for detecting the presence or absence of humidifying water in the water supply tank, the dish When the water detection means detects that there is no humidification water in the humidification tray Means to start the operation of the water supply pump, and when the tank water detecting means for detecting the presence or absence of humidification water in the water supply tank detects that there is no humidification water in the water supply tank, Since a controller is provided to control the operation of the intermittent operation of the water tank, even if the amount of humidified water supplied from the cartridge tank to the water supply tank is less than the amount supplied by the water supply pump to the humidification tray, Air is unlikely to be trapped inside the pump, which greatly reduces the possibility of water pump failure and abnormal noise.

[Brief description of drawings]

FIG. 1 is an external perspective view of a warm air heater showing an embodiment of the present invention.

FIG. 2 is a partially cutaway front view of the warm air heater with the warm air blowing grill removed.

FIG. 3 is an explanatory diagram of a front view which similarly illustrates a main part.

FIG. 4 is a block diagram showing a schematic configuration of a controller.

FIG. 5 is a flow chart showing the operation according to the first aspect of the invention.

FIG. 6 is a time chart diagram showing an operation according to the first aspect of the invention.

FIG. 7 is a flow chart showing the operation according to the second aspect of the invention.

FIG. 8 is a time chart diagram showing an operation according to the second aspect of the invention.

FIG. 9 is a flow chart showing the operation according to the third aspect of the invention.

FIG. 10 is a time chart diagram showing an operation according to the third aspect of the invention.

[Explanation of symbols]

1 body case 2 Case body 6 Warm air outlet (air outlet) 15 air flow path 16 Oil burner (combustion section) 21 heat exchange section 28 Hot air blower 30 cross flow fan (convection fan) 32 Humidification dish 35 Water supply device 38 Water tank 39 Water pump 44 Temperature detector (dish water detection means) 60A Micro Computer (Controller) 61 Tank water level detector (tank water detection means) T time To time

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroyuki Ieda             1 Otsuki-cho, Ashikaga City, Tochigi Prefecture Sanyo Electric Air Conditioning             Within the corporation F term (reference) 3L055 AA04 BC00 CA06 DA03 DA20

Claims (3)

[Claims] 1. A blower is provided with a blower flow passage connecting an air inlet and a blower outlet in a main body case, and a heat exchange unit to which combustion hot air is supplied from a combustion unit is arranged in the blower flow passage. By applying the air from the air suction port to the heat exchange part to supply the warm air after heat exchange to the room through the outlet, and to supply water into the air flow passage on the leeward side of the heat exchange part. In the warm air heater, the water in the tank is provided with a humidifying dish that is supplied by a water supply pump, and the humidifying water in the humidifying dish is evaporated by the warm air and is supplied to the room together with the warm air. Dish water detecting means for detecting the presence or absence of humidifying water in the humidifying dish, and when the dish water detecting means detects that there is no humidifying water in the humidifying dish, the water supply pump is operated for a predetermined time. Is equipped with a controller that controls to operate intermittently. Warm air heater to. 2. An air blower passage is formed in the main body case to connect the air suction port and the air outlet, and a heat exchange section to which combustion hot air is supplied from the combustion section is arranged in the air blow passage. By applying the air from the air suction port to the heat exchange part to supply the warm air after heat exchange to the room through the outlet, and to supply water into the air flow passage on the leeward side of the heat exchange part. In the warm air heater, the water in the tank is provided with a humidifying dish that is supplied by a water supply pump, and the humidifying water in the humidifying dish is evaporated by the warm air and is supplied to the room together with the warm air. Dish water detecting means for detecting the presence or absence of humidifying water in the humidifying tray, and when the dish water detecting means detects that there is no humidifying water in the humidifying tray, the water supply pump is operated for a predetermined time. Along with the start of operation of this water supply pump, Pump intermittently is operated, warm-air heating apparatus, wherein a controller is provided for controlling so as to continuously operate the subsequent rest time. 3. An air blower passage is formed in the main body case to connect the air suction port and the air outlet, and a heat exchange section to which combustion hot air is supplied from the combustion section is arranged in the air blow passage, and a blower is provided. By applying the air from the air suction port to the heat exchange part to supply the warm air after heat exchange to the room through the outlet, and to supply water into the air flow passage on the leeward side of the heat exchange part. In the warm air heater, the water in the tank is provided with a humidifying dish that is supplied by a water supply pump, and the humidifying water in the humidifying dish is evaporated by the warm air and is supplied to the room together with the warm air. The dish water detecting means for detecting the presence or absence of the humidifying water in the humidifying tray and the tank water detecting means for detecting the presence or absence of the humidifying water in the water supply tank are provided, and the humidifying water in the humidifying tray by the dish water detecting means is provided. If it is detected that there is no water, the operation of the water supply pump is started. If the humidifying water in the water supply tank is detected by the tank water detecting means for detecting the presence or absence of the humidifying water in the water supply tank, the water supply pump is intermittently operated. A hot air heater characterized by being provided with a controller for controlling.