JP2002310508A - Hot-air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a water receiving dish clean in a hot-air heater provided with an evaporating dish for storing humidifying water to evaporate it and a water supply device having the water receiving dish storing water and a water-conveying means for conveying the humidifying water to the evaporating dish from this water receiving dish. SOLUTION: A hot-air heater 10 is provided with an evaporating dish 40 for storing humidifying water to evaporate it and a water supply device 45 supplying the humidifying water to this evaporating dish 40, and this water supply device 45 is provided with a feed water tank 47 for supplying the humidifying water, a water receiving dish 46 receiving the humidifying water from this feed water tank 47 and a motor-operated feed water pump 48 pumping up the humidifying water in this water receiving dish 46. In the hot-air heater 10, a tank presence/absence detector 52 detecting the presence/absence of the feed water tank 47 is provided. There is provided a control part 16 controlling in such a manner as to operate the motor-operated feed water pump 48 for a predetermined time to finish pumping out the remaining water in the water receiving dish 46 in the case when this tank presence/absence detector 52 detects the absence of the tank.

Description

DETAILED DESCRIPTION OF THE INVENTION

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.

2. Description of the Related Art Conventionally, as a warm air heater 1 of this type,
For example, as shown in FIG.
A convection fan 3 and a heat exchanger 4 are provided in a main body 1A provided with a warm air outlet 2B at a lower part on the front surface, and a heat exchanger 4 in a ventilation flow path 5 in which the convection fan 3 and the heat exchanger 4 are arranged. It is known that the evaporating dish 6 is disposed more leeward than the evaporating dish 6. As shown in FIG. 7, the evaporating dish 6 is provided with a water level detecting device 8 such as a float switch for detecting the presence or absence of humidifying water (hereinafter referred to as humidifying water) in the evaporating dish 6. In 1, a water supply device 7 having a water supply tank 7 a for supplying humidified water to the evaporating dish 6 and a water receiving tray 7 b is provided. Then, when the water level detecting device 8 of the evaporating dish 6 detects that there is no water in the evaporating dish 6, a signal is transmitted to the control section 9, and the control section 9 transmits the signal to the warm air heater main body 1A.
Is displayed (notified) on a display unit (notifying means) 9a provided in the cradle.

However, in the above-described water level detecting device 8, when the water level detecting device 8 detects a predetermined water level, a small amount of humidified water remains in the water receiving tray 7b. If the water remains, there is a problem that bacteria grow in the remaining water, garbage and dust easily adhere to the water, and the water becomes unsanitary. The present invention has solved the above-mentioned conventional problems, and has an evaporating dish for storing and evaporating humidified water, a water pan for storing water, and a water pan for sending humidified water of the evaporating pan from the water pan. A hot air heater provided with a water supply device having a water supply means,
The purpose is to keep the water pan clean.

According to one aspect of the present invention, there is provided an evaporating dish for storing and evaporating humidifying water, and a water supply device for supplying the humidifying water to the evaporating dish. The water supply device is provided with a temperature detecting device for detecting the temperature of the evaporating dish in a hot air heater having a water receiving tray for storing water and a water supply means for pumping up humidified water in the water receiving tray. When the temperature detection device detects a temperature equal to or higher than a preset temperature, the water supply means is operated for a predetermined time to supply water to the evaporating dish, and the cumulative operation time is stored. When the accumulated predetermined time has been reached, a control unit for controlling the water supply means to stop is provided. The invention according to claim 2 includes an evaporating dish for storing and evaporating humidified water, and a water supply device for supplying the humidified water to the evaporating dish, wherein the water supply device includes a water receiving tray for storing water, In a warm air heater having a water supply means for pumping up the humidified water in the water receiving tray, a temperature detecting device for detecting a temperature of the evaporating plate is provided, and the temperature detecting device detects a temperature equal to or higher than a preset temperature. In addition to operating the water supply means to supply water to the evaporating dish, and counting the number of times the temperature is equal to or higher than the set temperature,
A control unit is provided for controlling the water supply means to stop when the water supply means has been operated a predetermined number of times.
According to a third aspect of the present invention, in the warm air heater according to the first or second aspect, an informing means is provided in the hot air heater main body, and the temperature detecting device detects a set temperature to activate the water supply means. Further, a control device is provided which controls the notifying means to notify the drought when the temperature detecting device detects the temperature equal to or higher than the set temperature even after the lapse of a predetermined time. According to a fourth aspect of the present invention, in the hot air heater according to any one of the first to third aspects, the water supply means includes an electromagnetic pump. According to a fifth aspect of the present invention, in the warm air heater according to any one of the first to fourth aspects, the water supply device includes a water supply tank for supplying water to a water tray, and the water supply tank is provided with a water supply tank. It is characterized in that it is housed in the hot air heater main body so that it can be freely inserted and removed through a tank inlet / outlet provided in the hot air heater main body.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 An embodiment of the present invention will be described below with reference to FIGS. FIG.
Is a perspective view of the appearance of the oil hot air heater in Embodiment 1, FIG. 2 is a sectional side view thereof, FIG. 3 is a partially cutaway front view of the oil hot air heater, and FIG. FIG. In FIG. 1, a petroleum hot air heater (hereinafter, referred to as a heater) 10 includes a box-shaped main body case 11, which has a case main body 10A and a front panel 12,
The front surface of the case body 10A is covered with a front panel 12 which is detachably attached, and a lower portion of the front panel 12 is provided with a horizontally long hot air outlet grill (hot air outlet) 13 having a plurality of horizontal guide blades. I'm facing. Also, the main body case 11
On the top surface, 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. A display unit 14 for displaying a mode, a set temperature, and the like is provided. The switches of the operation unit and the electric components of the display unit 14 are provided in the case body 10.
A is connected to the control unit 16 (FIG. 3) provided in A. 2 and 3, reference numeral 17 denotes the case body 10.
A back guard attached to the rear part of A, and this back guard 17 is composed of a top plate and left and right side plates, and covers the upper part of the rear space between the case body 10A and the room wall and both left and right sides. is there. An air suction port 15 having a detachable filter 15a is provided at the upper part of the back plate of the case body 10A, and mounting feet 19 for horizontal adjustment are provided near four corners of the bottom plate of the case body 10A. Adjustably mounted. In the case main body 10A, an air flow passage 18 that extends from the air inlet 15 to the hot air outlet grill 13 is formed. 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 thereto. 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. 28 is the oil burner 21
The air supply blower 28 has an air supply pipe 29 connected to one end face and an oil supply burner 21 at the other end. The case body 10A
In the upper part of the inside, a blower 31 for warm air is provided facing the air suction port 15, and the blower 31 for warm air is provided with a motor 33.
, A plurality of sirocco fans 34 (convection fans), and a plurality of fan cases 35,
Then, the room air sucked into the case body 10 </ b> A is blown toward the heat exchange unit 20. A pan receiver that detachably accommodates an evaporating pan 40 for storing humidified water to be evaporated by warm air is provided in the air passage 18 downstream of the heat exchanger 20, that is, in the lower portion of the case body 10 </ b> A. A body 36 is provided, and the evaporating dish 40 has an insertion opening 37 formed by removing the hot air blowing grill 13.
It can be taken out of the case main body 10A via (FIG. 2). The evaporating 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. This evaporation promoting body 3
8 denotes the evaporating dish 4 in the humidifying operation mode of the heater 10.
The humidified water of 0 is sucked up and kept in a humid state, and when the warm air comes into contact with the evaporation promoting body 38, the water is vaporized, and the room is humidified by the vaporized water. Dish receiver 3
A water supply device 45 is provided on the right side of 6. The water supply device 45 includes a detachable cartridge type water supply tank 47, a water receiving tray 46 for receiving humidified water from the water supply tank 47, a tank presence / absence detection device 52 for detecting the presence or absence of the water supply tank 47, An electric water supply pump 48 for pumping up the humidified water in 46 and a water supply pipe 51 connected to the electric water supply pump 48 are provided. 3 and 4, the water receiving tray 46 is fixed in the case main body 10A, and a substantially constant amount of water is maintained therein. The water supply tank 47 is configured to be housed so as to be able to be freely inserted into and removed from the main body case 11 through a tank access port 49 provided on the top surface of the main body case 10A, and the tank access port 49 is closed by an opening / closing lid. Also,
The water supply tank 47 is mounted on the water receiving tray 46 in an inverted manner so as to be detachable, has a cap with a valve at the bottom, and supplies humidifying water to the water receiving tray 46. A tank presence / absence detection device 52 is provided in the housing portion 47A of the water supply tank 47 in the main body case 10A.
It has a switch such as a micro switch having a contact mechanism for opening and closing operation, and its contact is electrically connected to the control unit 16. And the water supply tank 47 is the heater main body 10A.
If the tank is not taken out and stored, the tank presence / absence detecting device 52 detects the absence of the tank and transmits a signal to that effect to the control unit 16. At the time when the water supply tank 47 is taken out and the tank presence / absence detecting device 52 detects the absence of the tank, a small amount of water remains in the water receiving tray 46. The electric water supply pump 48 has a water inlet 48a and a water outlet 4a.
8b, and the suction port 48a is below the surface of the water in the water tray 46,
The water supply pipe 51 is connected to the discharge port 48b at a position substantially at the lowermost position.
It faces right above 0. The electric water pump 48 is configured by an electromagnetic pump, is connected to the control unit 16, and operates in the humidification operation mode. The electric water supply pump 48 is varied so that the pumping amount increases or decreases in accordance with the evaporation amount (or the rotation speed of the sirocco fan 34) assumed at the time of humidification. In the above-described configuration, when the operation of the heater 10 is started, combustion air is supplied to the oil burner 21 from the air supply blower 28, and a fuel pump (not shown) is provided.
By the operation, the oil fuel is supplied from the fuel supply pipe 27, 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, the heat exchange unit 2
When the temperature of 0 becomes higher than a predetermined temperature, the blower 31 for hot air is driven, and the room air purified by the filter 15a is sucked into the main body case 11 from the air suction port 15, and this air is blown by the blower for hot air. The air is accelerated by the sirocco fan 34 and is blown toward the heat exchanging unit 20, and exchanges heat with the heat exchanging unit 20 to become hot air. The hot air flows from the hot air blowing grill 13 toward the front of the main body case 11. Released, heating the room. In the humidification operation mode, as shown in FIG. 4, the electric water supply pump 48 operates, humidification water is supplied from the water supply device 45 to the evaporating dish 40, and humidification provided downstream of the heat exchange unit 20. Warm air comes into contact with the plate 40 and the evaporation promoting body 38, and the water stored in the humidifying dish 40 is heated and evaporated by the warm air, and the water sucked up by the evaporation promoting body 38 evaporates and evaporates. The generated moisture is released from the hot air outlet grill 13 together with the hot air, and the room is heated with the hot air and humidified at the same time. Here, when the water supply tank 47 is taken out of the storage portion 47A and the tank presence / absence detection device 52 detects that there is no tank, the tank presence / absence detection device 52 transmits a signal indicating that there is no tank to the control unit 16. In response to this signal, the control unit 16 operates the electric water supply pump 48 for a predetermined time during which the remaining water in the water tray is completely drained, and supplies water from the water tray 46 to the evaporating tray 40. Even when the electric water supply pump 48 has just supplied water to the evaporating dish 40 when the tank presence / absence detecting device 52 detects that there is no tank, since the evaporating dish 40 is sufficiently larger than the amount of water supplied, water is discharged from the evaporating dish 40. There is no overflow. After that, the control unit 16
After the electric water supply pump 48 has been operated for a predetermined time and stopped,
The display unit 14 displays a drought. As described above, the heater 10 in the present embodiment is provided with the tank presence / absence detection device 52 for detecting the presence / absence of the water supply tank 47, and the suction port 48 a of the electric water supply pump 48 is provided substantially at the bottom of the water receiving tray 46. When the tank presence / absence detection device 52 detects that there is no tank, the electric water supply pump 48 is operated for a predetermined time, so that the water left in the water receiving tray 46 when the water supply tank 47 is taken out from the heater main body 10A, It can be almost empty. The water supply tank 47 is connected to the heater 1
Each time the water tray 46 is taken out from 0A, the water tray 46 can be made empty without water, so that the water tray 46 is periodically emptied and can be kept clean. [Embodiment 2] Hereinafter, an embodiment of the present invention will be described with reference to the drawing of FIG. FIG.
It is explanatory drawing of the water supply apparatus of the oil warm air heater in Embodiment 2. In the second embodiment, components different from those of the first embodiment will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted. In FIG. 5, the evaporating dish 40 is provided with a float switch 53. The float switch 53 is electrically connected to the control unit 54, and when the water level falls below a predetermined water level T (the lowest water level that can be detected by the float switch 53) of the evaporating dish 40, it is reset. Upon detection, it is determined that there is no water in the evaporating dish 40, and a signal to that effect (water-less signal) is transmitted to the control unit 54. Upon receiving this signal, the electric water supply pump 48 supplies water to the evaporating dish 40. Control unit 1 of the first embodiment
6, the electric water supply pump 48 is operated in the humidifying operation mode, and the pumping amount is changed so as to increase or decrease according to the evaporation amount (or the rotation speed of the sirocco fan 34) assumed during the humidification. The control unit 54 of the second embodiment includes:
When the float switch 53 falls below the predetermined water level T, the electric water supply pump 48 is operated, and a large amount of water is supplied to the evaporating dish 40. Therefore, when water is supplied from the electric water supply pump 48 to the evaporating dish 40 when the water level of the evaporating dish 40 exceeds the predetermined water level T, water may overflow from the upper edge of the evaporating dish 40. In the above configuration, the heater 10
When the operation is started, the oil burner 21 starts burning and heats the room. Then, in the humidification operation mode, the electric water supply pump 48 operates as shown in FIG.
Humidifying water is supplied to the evaporating dish 40 from a water supply device 45 provided downstream of the heat exchange unit 20. The evaporating dish 40 is filled with humidified water, and the evaporation promoting body 38 is kept moist. Warm air comes into contact with the humidifying dish 40 and the evaporation promoting body 38, and the water in the humidifying dish 40 is heated and evaporated by the warm air, and the water sucked up by the evaporation promoting body 38 is evaporated and vaporized. Moisture is released from the hot air outlet grill 13 together with the hot air, and the room is heated with the hot air and humidified. When the water level in the evaporating dish 40 decreases and the float switch 53 detects the predetermined water level T or lower, a water-out signal is transmitted to the control unit 54. The control unit 54 operates the electric water supply pump 48 of the water supply device 45 for a predetermined time in response to the water-less signal, and supplies water to the evaporating dish 40. Here, when the water supply tank 47 or the like is taken out from the storage portion 47A and the tank presence / absence detection device 52 detects that there is no tank, the tank presence / absence detection device 52 transmits a signal indicating that there is no tank to the control unit 16. In response to this signal, the control unit 54
Operates the electric water supply pump 48 of the water supply device 45 for a predetermined time to discharge the humidified water in the water receiving tray 46. After the electric water supply pump 48 operates for a predetermined time and stops, the control unit 54
The display unit 14 displays a drought. As described above, the control unit 54 checks the presence / absence of humidified water in the evaporating dish 40 based on the no-tank signal from the tank presence / absence detecting device 52. When the float switch 53 detects the presence of water in the evaporating dish 40, The control unit 54 waits in a state where the water in the water tray 46 is empty (at the time when the tank presence / absence detecting device 52 detects the absence of the tank, the humidified water in the water tray 46 is immediately discharged to the evaporating plate 4).
When the water is sent to 0, the water in the evaporating dish 40 may overflow if the evaporating dish 40 is filled with water.) When the water level of the evaporating dish 40 decreases and the float switch 53 detects a predetermined water level T or less, the evaporating dish 40
Is transmitted to the control unit 54. When a signal indicating that there is no tank and a signal indicating that there is no water in the evaporating dish 40 are input to the control unit 54, the electric water supply pump 4 of the water supply device 45 receives the signal.
8 is operated for a predetermined time. And the electric water supply pump 48
It is determined that the water receiving tray 46 is empty at the time when a predetermined time has been operated, the electric water supply pump 48 is stopped, and
A signal is transmitted to the display unit 14 to display a drought. Further, a signal indicating that there is no tank and a signal indicating that there is no water in the evaporating dish 40 are input to the control unit 54, and the electric water supply pump 48 of the water supply device 45 is input.
When the signal indicating that there is a tank is input during the operation of
The operation is controlled so that the operation of the electric water supply pump 48 is stopped. (The electric water supply pump 48 is operated by the water pan 4
6 has the purpose of emptying the humidification water from inside,
Is stored, the humidification water flows from the water supply tank 47 into the water receiving tray 46, and the water receiving tray 46 cannot be emptied. As described above, the heater 10 according to the second embodiment is provided with the tank presence / absence detection device 52 for detecting the presence / absence of the water supply tank 47, and the suction port 48a of the electric water supply pump 48 is almost at the most When the tank presence detector 52 detects that there is no tank, the electric water supply pump 48 is operated for a predetermined time, so that the water remaining in the water tray 46 when the water supply tank 47 is removed from the heater main body 10A. Can be made almost empty. Water supply tank 4
7 is removed from the heater body 10A each time the water pan 46
Can be emptied, so that the water tray 46 is periodically emptied and can be kept clean. In the second embodiment, the presence or absence of water in the evaporating dish 40 is determined by detecting the water level of the evaporating dish 40 using the float switch 53. However, a temperature sensor or the like for detecting the temperature of the evaporating dish 40 is used. Alternatively, the presence or absence of water in the evaporating dish 40 may be detected from the difference in temperature. As described above, the present invention has been described based on various embodiments, but the present invention is not limited thereto. In the first and second embodiments, the drought notification is displayed on the display unit 14, but may be notified by a sound such as a buzzer or voice. In the first and second embodiments, a heater using an oil burner 21 is described, but a heater using a gas burner may be used.

As described above, the present invention provides a warm air heater comprising an evaporating dish for storing and evaporating humidified water and a water supply device for supplying the humidified water to the evaporating dish. The water supply device includes a water supply tank for replenishing the humidification water, a water receiving tray for receiving the humidification water from the water supply tank,
It has a water supply means for supplying humidified water in the water tray to the evaporating dish, and a tank presence / absence detection device that detects the presence / absence of a water supply tank. When the tank presence / absence detection device detects that there is no tank, water is supplied. The means is operated to control the humidification water remaining in the water pan to be completely discharged. Since the humidifying water is completely drained from the water tray every time the water supply tank is taken out of the heater body, the water tray is periodically kept free of water, and the inside of the water tray can be kept clean.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a petroleum hot air heater according to Embodiments 1 and 2 of the present invention.

FIG. 2 is a side sectional view of the oil warm air heater of FIG. 1;

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

FIG. 4 is an explanatory diagram of a water supply device of the oil hot air heater in the first embodiment.

FIG. 5 is an explanatory diagram of a water supply device of an oil hot air heater according to a second embodiment.

FIG. 6 is a side sectional view of a conventional oil warm air heater.

FIG. 7 is an explanatory view of a conventional oil warm air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Oil hot air heater 10A Case main body 11 Main body case 12 Front panel 13 Hot air blowout grill 15 Air intake 16, 54 Control part 18 Ventilation flow path 20 Heat exchange part 21 Oil burner (combustion part) 22 Combustion cylinder 23 Connection box 24 Heat exchange pipe 34 Sirocco fan (convection fan) 36 Dish receiver 37 Insertion / removal opening (opening) 38 Evaporation enhancer 40 Evaporation dish 41 Drain port 42 Return pipe 45 Water supply device 46 Water tray 47 Water supply tank 47A Storage Part 48 Electric water pump (water supply means) 48a Suction port 48b Discharge port 49 Tank inlet / outlet 51 Water pipe 52 Tank presence detector 53 Float switch (water detector) T Set water level of evaporating dish

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F24F 6/04 F24F 6/04 F24H 3/04 305 F24H 3/04 305Z (72) Inventor Takeshi Osawa Tochigi 1 Otsukicho, Ashikaga City Sanyo Electric Air Conditioning Co., Ltd. F-term (reference) 3L028 FA02 FB05 FC02 FD03 3L055 AA04 BA02 CA06 DA01 DA09 DA11 3L071 AA02 AB06 AC01 3L072 AA06 AB10 AC01 AD03 AD07 AE10

Claims (8)

[Claims] 1. An evaporating dish for storing and evaporating humidified water, and a water supply device for supplying humidified water to the evaporating dish,
This water supply device has a water supply tank for supplying humidification water, a water receiving tray for receiving the humidification water from the water supply tank, and a water supply means for supplying the humidification water in the water reception tray to the evaporating dish. In the air heater, a tank presence / absence detection device for detecting the presence / absence of the water supply tank is provided. When the tank presence / absence detection device detects the absence of the tank, the water supply means is operated for a predetermined time, and the humidifying water remaining in the water receiving pan is provided. A hot-air heater provided with a control unit for controlling so as to completely discharge the air. 2. The hot air heater further includes a notifying unit, and a control unit that controls the notifying unit to notify a drought after the water supply unit has been operated for a predetermined time.
A warm air heater according to claim 1. 3. An evaporating dish for storing and evaporating humidified water, and a water supply device for supplying humidified water to the evaporating dish,
This water supply device has a water supply tank for supplying humidification water, a water receiving tray for receiving the humidification water from the water supply tank, and a water supply means for supplying the humidification water in the water reception tray to the evaporating dish. In the air heater, a tank presence / absence detection device for detecting the presence / absence of the water supply tank is provided, a water detection device is provided for the evaporating dish, and when the tank presence / absence detection device detects no tank, the water detection device is out of water. A hot air heater provided with a control unit for controlling the water supply means to operate for a predetermined period of time upon detecting the humidification water remaining in the water receiving tray. 4. The hot air heater is provided with a notifying means, and a control unit is provided for controlling the notifying means to notify a drought after the water supply means has been operated for a predetermined time.
A warm air heater according to claim 1. 5. The apparatus according to claim 1, further comprising a control unit for controlling the water supply means to stop when the tank presence / absence detection device detects the presence of the tank during operation of the water supply means. Hot air heater described in Crab. 6. The hot water supply device according to claim 1, wherein the water supply means has a water inlet, and the water inlet is provided at a substantially lowermost position of a water receiving tray. Wind heater. 7. The hot air heater according to claim 1, wherein the water supply means is constituted by an electromagnetic pump. 8. The water supply device includes a water supply tank for supplying water to a water receiving tray, and the water supply tank can be freely inserted and removed through a tank inlet and outlet provided in a warm air heater main body. The hot air heater according to any one of claims 1 to 7, wherein the warm air heater is housed in the main body.