JP2002213824A - Warm air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warm air heater wherein the check for presence of humidifying water stored in a humidifying pan is facilitated, and taking it out from a body case are facilitated to make cleaning for the humidifying pan with ease. SOLUTION: The warm air heater 10 comprises a body case 11, having an air suction inlet 15 and a warm air blow-off outlet 13; a fan air flow passage 18, formed in the body case 11 for communicating the air suction inlet 15 and the warm air blow-off outlet 13 with each other; a convection fan 34 and a heat exchanger section 20 disposed on the fan air flow passage 18; a combustion section 21 for supplying combustion air into the heat exchange section 20; and the humidifying pan 40, disposed in the fan air flow passage 18 located downstream of the heat exchange section 20 for storing the humidifying water vaporized with warm air. A temperature sensor 44 is provided for detecting the temperature of the humidifying pan. There is further provided turbid water informing means, for informing a user of lack of the humidifying water in the humidifying pan 40, when the temperature sensor 44 detects a predetermined temperature or higher.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater having a humidifying function, such as an FF oil hot air heater or an FF gas hot air heater.

[0002]

2. Description of the Related Art Conventionally, as this type of warm air heater (hereinafter referred to as a heater), for example, a warm air outlet is provided at a lower front portion of a main body case of the heater, and an air inlet is provided at an upper rear portion thereof.
An air flow passage connecting the air inlet and the hot air outlet is provided in the main body case, a convection fan and a heat exchange unit are provided in the air flow passage, and the convection fan and the heat exchange unit are arranged. A humidifying dish which is arranged on the leeward side of a heat exchanger in a blown air flow path is known. In addition, a combustion part is provided in the main body case, and combustion hot air is supplied from the combustion part into the heat exchange part.

The main body case is provided with an insertion / removal opening for inserting / removing a humidifying tray which can be opened / closed by a lid. It replenishes water and cleans the humidifying dish.

[0004] When humidifying and heating with this heater, humidifying water is stored in a humidifying dish, and the stored humidifying water is blown with hot air exchanged in a heat exchanging section to evaporate and evaporate. Warm air with air was blown into the room and humidified and heated.

[0005]

However, in the conventional heater described above, the presence or absence of the humidification water stored in the humidifying dish cannot be confirmed from outside the heater. It was necessary to replenish the humidifying water in anticipation of the time when the humidifying water was almost exhausted. For this reason, the user has to always pay attention to the amount of water in the humidifying dish, which is a burden on the user.

[0006] In order to eliminate the burden on the user, there is generally a water amount detecting device of a type in which a float is provided on a humidifying dish, and the position of the vertical movement of the float is changed to an electric signal. This device includes, for example, a float floating in humidifying water in a humidifying dish, an arm interlocking with the vertical movement of the float, a reed switch that turns on when the position of the float falls below a predetermined level, and that the reed switch turns on. When the water level in the humidifying dish falls below a predetermined level, the reed switch is turned on and the display lamp is turned on to notify a drought.

However, with the above structure, the float, arm, reed switch, wiring, and the like are arranged in and around the humidifying dish, so that it is difficult to take the humidifying dish out of the main body case. Therefore, when cleaning the humidifying dish, the humidifying dish must be stored in the main body case, which causes a problem that cleaning is difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In a hot air heater equipped with a humidifying dish, it is possible to easily confirm the presence or absence of humidifying water stored in the humidifying dish. It is another object of the present invention to provide a warm air heater capable of easily removing a humidifying dish from a main body case and easily cleaning the humidifying dish.

[0009]

According to the first aspect of the present invention, there is provided a main body case having an air inlet and a hot air outlet,
A blower passage formed in the main body case and connecting the air inlet and the warm air outlet, a convection fan and a heat exchanger disposed in the blower passage; and a combustion hot air in the heat exchanger. A hot air heater provided with a humidifying dish, which is disposed in a blast channel on the leeward side of the heat exchange unit and stores humidified water to be evaporated by hot air,
A temperature sensor for detecting the temperature of the humidifying dish is provided, and when the temperature sensor detects a temperature equal to or higher than a predetermined temperature, drought notifying means for notifying that the humidifying water in the humidifying dish is in a drought state is provided. It is characterized by having.

According to a second aspect of the present invention, there is provided a main body case having an air inlet and a hot air outlet, an air flow passage formed in the main body case and connecting the air inlet and the hot air outlet, A convection fan and a heat exchange unit disposed in the wind passage, and a combustion unit for supplying combustion hot air into the heat exchange unit;
A humidifying dish disposed in a blast passage downstream of the heat exchanging section and having a humidifying dish for storing humidifying water evaporated by hot air, wherein the humidifying dish is detachably accommodated. In addition to providing a dish receiver for holding, the dish receiver is provided with a temperature sensor for detecting the temperature of the humidifying dish, and when the temperature sensor detects a temperature equal to or higher than a predetermined temperature,
It is characterized in that there is provided drought notification means for notifying that the humidification water in the humidification dish is in a drought state.

According to a third aspect of the present invention, in the hot air heater according to the second aspect, the temperature sensor is attached to a dish receiver that is in contact with the humidifying dish.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.

FIG. 1 is a partially cutaway front view of an oil hot air heater in one embodiment of the present invention. In FIG. 1, a petroleum hot air heater (hereinafter referred to as a heater) 10 includes a box-shaped main body case 11, and the main body case 11 is
0A and a front panel 12, and a front surface of the case body 10A is covered with a detachably attached front panel 12, and a lower part of the front panel 12 has a horizontally long hot air blow having a plurality of horizontal guide blades. The outlet grill (hot air outlet) 13 faces. An operation unit having an operation switch for operating the heater 10, a set temperature switch for setting a desired room temperature, a humidification operation switch for setting a humidification mode, and the like are provided on a top surface of the main body case 11. A display unit 14B for displaying the operation mode, set temperature, and the like of the heater 14A and the heater is provided, and is connected to a control device (not shown).

2 and 3, the case body 10A
An air suction port 15 having a detachable filter 15a is provided at the upper part of the back plate, and mounting feet 16 for horizontal adjustment are freely adjustable near the four corners of the bottom plate of the case body 10A. Attached.

Reference numeral 17 denotes a back guard attached to the rear of the case body 10A.
Consists of a top plate and left and right side plates, and the case body 10A
It covers the upper part of the rear space and the left and right sides of the rear space between the room and the room wall.

In the case body 10A, there is formed an air flow passage 18 which extends from the air inlet 15 to the hot air outlet grill 13. An oil burner 21 that vaporizes and burns petroleum fuel such as kerosene, a combustion tube 22 connected to the oil burner 21, a connection box 23 connected to the combustion tube 22, A heat exchange section 20 having a heat exchange pipe 24 and an exhaust collecting box 25 and an exhaust pipe 26 connected to the exhaust collecting box 25 are housed.

An oil leveler (not shown) for storing petroleum fuel sent from an oil supply pipe (not shown) is accommodated in a lower portion of one side of the case main body 10A, and the fuel in the oil leveler is The oil is supplied to the oil burner 21 via a fuel pump (not shown) and a fuel supply pipe 27.

Reference numeral 28 denotes an air supply blower for supplying combustion air to the oil burner 21. The air supply blower 28 has an air supply pipe 29 connected to one end face, and has an other end connected to the oil burner 21.
Connected to.

An upper portion of the case body 10A is provided with a warm air blower 31 opposed to the air suction port 15. The warm air blower 31 includes a motor 33 and a plurality of sirocco fans 34 (convection fan). Fan) and multiple fan cases 3
5 from the air inlet 15 to the case body 10
The room air sucked into A is blown toward the heat exchange unit 20.

A humidifying tray 40 for storing humidifying water to be evaporated by warm air is removably accommodated in the air flow passage 18 on the leeward side of the heat exchanger 20, that is, in the lower portion of the case body 10A. A dish receiving body 36 is provided. The humidifying dish 40 is connected to the case main body 10 through an insertion opening 37 which is formed by removing the hot air outlet grill 13.
It can be taken out of A.

The dish receiver 36 is made of a material having thermal conductivity, and a temperature sensor 44 for detecting the temperature of the humidifying dish 40 is provided on the lower surface side of the bottom plate 43 in contact with the humidifying dish 40 of the dish receiving body 36. Is attached. The temperature sensor 44 is connected to the bottom plate 4
The temperature sensor 44 is electrically connected to a control device S having a microcomputer (not shown). I have.

The humidifying dish 40 is maintained at a surface temperature of about 40 ° C. when water is present therein, and rises to about 70 ° C. when water is exhausted.

The detection signal of the surface temperature of the humidifying dish 40 by the temperature sensor 44 is input to a control device S. The control device S uses the temperature difference of the surface temperature of the humidifying dish 40 to perform To determine the presence or absence of humidification water. When the temperature sensor 44 detects a temperature equal to or higher than a predetermined temperature, the control device determines that the humidifying dish 40 is in a drought state with no humidifying water, and that fact is determined.
For example, a drought character is displayed on the display unit 14B provided on the top surface of the liquid crystal display. Thus, the user can humidify the dish 40
To know that there is no water.

The dish receiver 36 has a dish shape, has a drain 41 on the right side, and a return pipe 42 is connected to the drain 41. A humidifying dish 40 is installed in the dish receiver 36, and water overflowing from the humidifying dish 40 is discharged through a return pipe 42.

The humidifying dish 40 is provided with an evaporation promoting body 38 made of ceramic fiber as a base material and having air permeability and water absorption. In the humidification operation mode of the heater 10, the evaporation promoting body 38 sucks up water from the humidifying dish 40 and is kept in a moist state. When the warm air comes into contact with the evaporation promoting body 38, moisture is vaporized, The room is humidified by the vaporized water.

On the right side of the plate receiver 36, a water supply device 45 is provided.
Is provided. The water supply device 45 includes a detachable cartridge type water supply tank 47 and a water supply tank 47.
Receiver 46 for receiving humidified water from the tank, and an electric water supply pump 48 for pumping the humidified water in the tank receiver 46
And a water supply pipe 51 connected to the electric water supply pump 48.

The tank receiver 46 is detachably fixed in the case body 10A, and a substantially constant amount of water is maintained therein. Also, this tank receiver 46
The return pipe 4 attached to the dish receiver 36
2 and the return pipe 42 is connected to the humidifying dish 40
Excess water overflowing from the plate receiver 36 and the tank receiver 46
It is a return channel to return to. The return pipe 42 has the outlet on the tank receiver 46 side lower than the inlet on the dish receiver 36, and returns the surplus water to the tank receiver 46 by a head.

The water supply tank 47 is configured so as to be freely inserted into and removed from the main body case 11 through a tank access opening (not shown) provided on the top surface of the main body case.
The tank inlet / outlet is closed by an opening / closing lid (not shown). Further, the water supply tank 47 is detachably mounted on the tank receiver 46 in an inverted manner, has a cap with a valve at the bottom, and supplies humidifying water to the tank receiver 46.

The electric water supply pump 48 has a water suction port and a discharge port, the suction port is located below the water surface in the tank receiver 46, and a water supply pipe 51 is connected to the discharge port.
The front end discharge port portion 51 </ b> A faces right above the humidifying dish 40. The electric water supply pump 48 is constituted by a magnet pump or an electromagnetic pump, and operates in the humidification operation mode. The electric water pump 48 is varied so that the pumping amount is increased or decreased in accordance with the rotation speed of the sirocco fan 34 (the rotation speed of the motor 33) at the time of its operation. However, the pumping amount is substantially constant. Is also good.

In the above-described configuration, when the operation of the heater 10 is started, the combustion air is supplied to the oil burner 21 from the air supply blower 28 and the fuel supply pipe 27 is operated by the operation of the fuel pump (not shown). And the oil burner 21 starts burning. By the start of the combustion of the oil burner 21, the combustion gas passes through the heat exchange section 20 and is discharged from the exhaust pipe 26 to the outside.

Here, when the temperature of the heat exchange section 20 becomes higher than a predetermined temperature, the hot air blower 31 is driven, and the room air purified by the filter 15 a is sucked into the main body case 11 from the air suction port 15. This air is blown by the hot air blower 3
The air is accelerated by the first sirocco fan 34 and blown toward the heat exchange unit 20, and exchanges heat with the heat exchange unit 20 to become hot air,
The hot air is discharged from the hot air outlet grill 13 toward the front of the main body case 11 to heat the room. At this time, warm air comes into contact with the humidifying dish 40 and the evaporation promoting body 38 provided on the downstream side of the heat exchanging section 20, and the humidifying dish 40
Is heated and evaporated, and the water sucked up by the evaporation promoting body 38 evaporates and evaporates, and the vaporized water is released from the hot air blowing grill 13 together with the hot air, so that the room becomes warm. The air is heated and humidified at the same time.

As described above, the heater 1 according to the present embodiment
0 is the bottom plate 43 of the dish receiver 36 on which the humidifying dish 40 is placed.
Then, a temperature sensor 44 in which the detecting unit 44A is brought into contact with the humidifying dish 40 is attached, and when the temperature sensor 44 detects a temperature equal to or higher than a predetermined temperature, the display unit 14B indicates that the humidifying dish 40 is drought. Is displayed, the user can easily recognize from the outside of the main body case 11 that the humidifying tray 40 is in a dry state.

Therefore, the above-mentioned drought condition is displayed on the display unit 1.
By displaying (notifying) with 4B, the user is encouraged to supply water to the water supply tank 47, and it is possible to prevent the humidification from being performed while the water is dry.

The humidifying dish 40 is removably accommodated and held in the dish receiving body 36, and the humidifying dish 40 is not provided with the temperature sensor 44.
The humidifying dish 40 can be easily taken out of the case main body 10A from the insertion / removal opening 37 formed by removing the humidifying dish 37, so that the humidifying dish 40 can be easily cleaned. Further, the humidifying dish 40 can be easily returned to the dish receiving body 36 after the cleaning is completed.

Although the present invention has been described based on various embodiments, the present invention is not limited to these embodiments. In the present embodiment, a heater using an oil burner 21 is described, but a heater using a gas burner may be used.

Further, in the present embodiment, the fact that the humidifying tray 40 is in a drought state is displayed on the display unit 14B to notify the user.
At the same time, the notification may be made by sound or voice, or the operation of the heater 10 may be stopped.

[0037]

As described above, according to the present invention, the humidifying water is disposed in the blast passage on the lee side of the heat exchanging section, and is used for storing the humidifying water evaporated by the warm air. A humidifying dish and a temperature sensor for detecting the temperature of the humidifying dish are provided. When the temperature sensor detects a temperature equal to or higher than a predetermined temperature, the humidifying water in the humidifying dish is notified of a drought condition. Since the system is provided with a drought notification means, the user can easily recognize that the humidifying dish is in a dry state from the outside, and it is possible to prevent a situation where humidification is not performed in the dry state. The humidification function can be effectively used, and the usability is enhanced.

According to the second aspect of the present invention, in addition to the effect of the first aspect, since the temperature sensor is not mounted on the humidifying dish, the presence or absence of humidifying water in the humidifying dish can be detected. In addition, the humidifying dish can be easily removed, and the humidifying dish can be easily cleaned.

[Brief description of the drawings]

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

FIG. 2 is a side sectional view of the oil hot air heater.

FIG. 3 is a partially cutaway front view of the oil hot air heater.

[Explanation of symbols]

 S control device 10 oil hot air heater 10A case main body 11 main body case 12 front panel 13 hot air outlet grill (hot air outlet) 14B display unit (drought notification means) 15 air inlet 17 back guard 18 air flow path 20 heat exchange Unit 21 Oil burner (combustion unit) 22 Combustion cylinder 24 Heat exchange pipe 34 Sirocco fan (convection fan) 36 Dish receiver 37 Insertion / removal opening (opening) 38 Evaporation enhancer 40 Humidifying pan 41 Drainage outlet 42 Return pipe 43 bottom plate 44 temperature sensor 44A temperature sensing part 45 water supply device 46 tank receiver 47 water supply tank 48 electric water supply pump 51 water supply pipe

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Kashiwase 1 Otsukicho, Ashikaga, Tochigi Sanyo Electric Air Conditioning Co., Ltd. F term (reference) in corporation 3L028 FA04 FB05 3L055 AA04 BA02 DA09 3L060 AA07 CC01 DD06 EE25

Claims (3)

[Claims] 1. A main body case having an air inlet and a hot air outlet, an air flow passage formed in the main body case and connecting the air inlet and the hot air outlet, and disposed in the air flow passage. Convection fan and heat exchange unit, a combustion unit that supplies combustion hot air into the heat exchange unit, and humidification water that is disposed in a blast passage downstream of the heat exchange unit and evaporates with hot air. A hot air heater provided with a humidifying dish for storing a temperature sensor for detecting the temperature of the humidifying dish, and when the temperature sensor detects a temperature equal to or higher than a predetermined temperature, A hot-air heater provided with a drought notifying means for notifying that the humidifying water is in a drought state. 2. A main body case having an air inlet and a hot air outlet, an air flow passage formed in the main body case and connecting the air inlet and the hot air outlet, and disposed in the air flow passage. Convection fan and heat exchange unit, a combustion unit that supplies combustion hot air into the heat exchange unit, and humidification water that is disposed in a blast passage downstream of the heat exchange unit and evaporates with hot air. A hot air heater provided with a humidifying dish for storing the humidifying dish, a dish receiver for detachably storing and holding the humidifying dish, and a temperature sensor for detecting the temperature of the humidifying dish in the dish receiver. And when the temperature sensor detects a temperature equal to or higher than a predetermined temperature, there is provided a drought notifying means for notifying that the humidifying water in the humidifying dish is in a drought state. 3. The hot air heater according to claim 2, wherein the temperature sensor is attached to a dish receiver that is in contact with the humidifying dish.