JP2001241709A - Hot-air vaporizing type humidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot-air vaporizing type humidifier which vaporizes sprayed tap water by using the sensible heat of heated air and, supplies clean steam to a room by catching white powder produced by the change of impurities contained in the water caused by the vaporization. SOLUTION: This hot-air vaporizing type humidifier is provided with a fan 3 which takes in and pressurizes air, device 4 which heats the air, water spray nozzle 11, air-water mixer 13, the filter 14 which catches the white powder produced by the change of impurities contained in the water, and a heat recovery device 20 which recovers heat from hightemperature air at the outlet of this humidifier.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidifier for vaporizing water by sensible heat of hot air and humidifying a room.

[0002]

2. Description of the Related Art Conventionally, as a method of generating humidified steam by boiling water, an electric heater type in which water in a water tank is heated and boiled by an electric sheath heater, and an electric current is passed through water in the water tank to generate water. There is an electrode type that generates heat by electric resistance and generates steam. The electric heater type requires a pure water device to use pure water as the humidifying water.However, even if a commercially available pure water device is used, impurities in the water cannot be completely removed. Therefore, it was necessary to periodically drain the water in the water tank, and to clean the electric heater and impurities attached to the water tank. The electrode type does not require a water purifier, but since impurities adhere to the electrodes and the inside of the water tank,
It was necessary to periodically drain the water in the water tank and clean the electrodes and impurities attached to the water tank.

[0003]

The present invention has the following objects. (1) Water is vaporized by the sensible heat of the hot air heated by the air heater, and the white powder produced by the change of impurities in the water due to vaporization is captured by a filter and clean steam is supplied indoors. With the goal. (2) A filter that captures white powder produced by changing impurities in water and a fiber-air mixer for vaporization promotion are 1-2 years a year.
It is intended to be removed from the humidifier, washed and reused. (3) The purpose of humidifying water is to use tap water as it is, and not to use a pure water device or a water softener. (4) It is an object of the present invention to prevent a white powder formed by changing impurities in water from being attached to a blower, an air heating unit, and a water spraying unit.

[0004]

According to a first aspect of the present invention, there is provided a blower for taking in and pressurizing air, an electric heater for heating air,
It is equipped with a water mist nozzle for humidification, an air / water mixer made of fiber for promoting vaporization, and a filter for capturing white powder generated by changing impurities in water as the spray water is vaporized. In the second invention, the first
The heat recovery type heat pipe which removes the sensible heat of the high-temperature air into hot air at the outlet of the humidifier of the invention and uses the removed heat to raise the temperature of the air at the inlet of the air heating section. Equipment. In the third invention, in the air heating section of the first invention, the air is heated by the evaporated refrigerant inside the humidifier, outside the humidifier, inside the humidifier and inside the evaporator, which heats the water refrigerant with an electric sheath heater to produce steam. And a heat pipe air heater having a condenser for condensing.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) As shown in FIG. 1, the hot air evaporative humidifier 1 of this embodiment is suitable for use in combination with a building air conditioner or the like, or for use alone for home use.
As a structure, it has a blast heating unit, a water spray vaporization unit, an impurity white powder capture unit, and an electric heater output control unit. The blower heating unit includes an air inlet 2 and a blower 3 for pressurizing intake air, and an electric heater 4 for heating air is attached to the blower outlet side. As for the water spray vaporizing section, a check valve 6, a water supply pipe opening / closing solenoid valve 7, a pressurizing pump 8, a constant pressure valve 9, a pressurized water supply pipe 10, and a water spray nozzle 11 are attached to the water supply pipe 5, and a water spray nozzle 11 is provided. Has a fiber air / water mixer 13 for promoting the vaporization of the spray water 12. A fiber filter 14 is provided for the white powder capturing portion for impurities. As for the electric heater output control unit, a temperature detector 15 is attached to the filter inlet side, and a control panel 16 for controlling the output of the electric heater is provided. Next, the operation state of the hot air vaporizing humidifier of this embodiment will be described. Normal-temperature air entered through the air inlet 2 is pressurized by the blower 3, sent into the electric heater 4 for heating, heated to be hot air, and sent into the air-water mixer 13 made of fiber for promoting vaporization. On the other hand, when the humidifying water is pressurized and blown out from the spray nozzle 11 into the fiber air-water mixer for vaporization promotion, the spray water exchanges heat with hot air, and the steam and the impurities in the water change into white powder. Separated. The impurity white powder is captured by the filter 14, and clean steam and hot air can be obtained at the filter outlet. Humidification can be performed by a method of blowing the clean steam and high-temperature air into the air-conditioning air supply duct and a method of blowing the clean steam and high-temperature air directly into the room from the humidifier outlet 19. Since this hot air vaporizing humidifier also blows out hot air, it can also serve as a heating device. next,
The control state of the blower 3, the electric heater 4, and the water spray pressurizing pump 8 during the operation of the hot air vaporizing humidifier 1 of this embodiment will be described. When a humidification request signal enters the control panel 16 from the humidity detector installed in the room, the blower is first activated,
Next, the solenoid valve 7 of the water supply pipe is opened, the pressurizing pump 8 is started,
Water spray with a constant spray pressure starts from the spray nozzle. Next, the output of the electric heater 4 for air heating rises, the intake air is heated, and hot air is sent into the air-water mixer 13 made of fiber for promoting vaporization, and the spray water exchanges heat with the hot air to vaporize. During humidification, the output of the electric heater is controlled by the feedback signal of the temperature detector 15 at the filter inlet, in order to keep the air temperature at the inlet of the filter 14 constant at the optimum temperature for vaporization so that the spray water evaporates efficiently. are doing. (Embodiment 2) As shown in FIG. 2, a blast heating unit, a water spray evaporation unit, a white powder capturing unit for impurities, and an electric heater output control unit of the hot air vaporizing humidifier 1 are the same as those of the first embodiment. The hot air vaporizing humidifier of the second embodiment has a heat recovery type heat pipe device at the humidifier outlet and the air heating unit inlet.
Regarding the heat recovery type heat pipe device 20, the refrigerant evaporator 21 is attached to the humidifier high-temperature air outlet 19, the refrigerant condenser 22 is attached to the inlet of the air heating section, and the refrigerant evaporator outlet 2 is attached.
3 is connected to a refrigerant condenser inlet 24 by a refrigerant vapor pipe 25, and a refrigerant condenser outlet 26 and a refrigerant evaporator inlet 27 are connected to a refrigerant liquid pipe 28.
Are connected by In order to control the humidifier outlet temperature, a humidifier outlet 19 has a temperature detector 29 and a refrigerant liquid flow control valve 3.
0 is attached. Next, an operation state of the heat recovery heat pipe device will be described. In this heat pipe device, the inside is evacuated, and a refrigerant such as water is injected into the refrigerant liquid pipe 28 and about half the height of the refrigerant evaporator 21. When the refrigerant liquid 31 in the refrigerant evaporator is heated from the outside with high-temperature air, the refrigerant liquid evaporates and becomes a vapor 32. The vapor flows from the evaporator outlet 23 through the refrigerant vapor pipe 25 through the evaporator outlet 23 into the refrigerant condenser by the force of natural circulation. When the vapor is cooled from the outside with the intake air, the vapor condenses into a liquid 33. Since this liquid is higher at the refrigerant condenser mounting position than at the refrigerant evaporator mounting position, the liquid flows through the refrigerant liquid pipe 28 from the refrigerant condenser outlet 26, enters the refrigerant evaporator, and repeats the cycle of being heated and evaporated. In this cycle, the humidifier outlet high-temperature air is deprived of sensible heat as the refrigerant liquid evaporates and becomes hot air containing a large amount of steam, and is blown into the air conditioning air supply duct or directly blown into the room. Humidify the room. On the other hand, the intake air takes latent heat from the refrigerant vapor in the refrigerant condenser to become high-temperature air and is sent to the electric heater 4 for air heating. Therefore, the capacity of the electric heater for air heating can be reduced. (Embodiment 3) As shown in FIG. 3, the other parts of the hot air vaporizing humidifier 1 except for the air heating unit are the same as those of the first embodiment. In the heat pipe air heating device 34 according to the third embodiment, a water refrigerant evaporator 36 heated by an electric sheath heater 35 is mounted outside the humidifier, and the latent heat of the refrigerant vapor is used to heat the air inside the humidifier. A refrigerant condenser 37 for producing high-temperature air is connected, a refrigerant vapor outlet 38 and a refrigerant condenser inlet 39 are connected by a refrigerant vapor pipe 40, and a refrigerant condenser outlet 41 and a refrigerant evaporator inlet 42 are connected by a refrigerant liquid pipe 43. Are linked. Next, an operation state of the heat pipe air heating device will be described. In this heat pipe air heating device, the inside is evacuated, and water is injected as a refrigerant to a height of about half of the refrigerant evaporator 36. When a humidification request signal from the humidity detector installed in the room enters the control panel 16 of the electric sheath heater 35, the output of the electric sheath heater increases,
Water in the refrigerant evaporator 36 evaporates to become steam 44. This steam is sent from the refrigerant evaporator outlet 38 to the steam pipe 4 by natural circulation power.
When it rises in 0 and enters the refrigerant condenser 37 and is cooled by air from outside the refrigerant condenser, the steam loses latent heat and condenses,
The air becomes hot air as well as the condensed water 45. Since the condensed water is higher at the refrigerant condenser mounting position than at the refrigerant evaporator mounting position, the condensed water flows through the liquid pipe 43 from the refrigerant condenser outlet 41 and enters the refrigerant evaporator. The cycle of heating and evaporating again is repeated. In this cycle, the air outside the refrigerant condenser is heated and turned into hot air, which is sent into the fiber-air mixer 13 for vaporization promotion.

[0006]

The present invention has the following effects. (1) Spray water can be efficiently vaporized in hot air, and white powder produced by changing impurities in the water is captured by a leeward filter, so that clean steam can be supplied indoors. (2) Since tap water is used as humidification water, installation cost and maintenance cost of a pure water device, which are conventionally required, can be reduced. (3) Because of the structure that evaporates the spray water in hot air and sends it downwind, the white powder generated by the change of impurities in the water does not stick to the windward blower, air heating unit, and water spray unit, so long term Over a period of time. (4) Maintenance is carried out once or twice a year. The fiber filter and the air / water mixer for vaporization are taken out of the humidifier and can be reused if they are washed. It can reduce industrial waste as well as the amount of waste. (5) In a hot air vaporizing humidifier equipped with a heat recovery type heat pipe device, an air heating unit is used to heat and raise the temperature of the air at the air heating unit inlet by using the heat recovered at the humidifier outlet. And the air at the outlet of the humidifier can be changed from hot air to hot air. (6) In a hot air vaporizing humidifier equipped with a heat pipe air heating device, the electric heater for air heating is installed outside of the humidifier and mounted in the water of a heat pipe device whose internal pressure is kept below atmospheric pressure. Therefore, the probability of occurrence of a fire accident among accidents caused by electrical failure, mechanical failure, and human error can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a first embodiment of the present invention in which spray water is vaporized with hot air and impurities in the water change to capture white powder produced by a filter.

FIG. 2 is a diagram illustrating a second embodiment in which the heat of the high-temperature air at the humidifier outlet is recovered and effectively used in the hot-air vaporizing humidifier according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating a third embodiment in which a heat pipe device is used in an air heating unit of the hot-air vaporizing humidifier according to the first embodiment of the present invention.

[Explanation of symbols]

 17 Eliminator 18 Drain pan 20 Heat recovery type heat pipe device 34 Heat pipe air heating device 46 Casing

Claims (3)

[Claims] 1. Air is sent to an air heating section to generate hot air, and water is vaporized by the sensible heat of the hot air, and white powder produced by changing impurities in the water with the vaporization is captured by a filter. Hot air vaporizing humidifier that can supply clean steam. 2. The hot air vaporizing humidifier according to claim 1, wherein the sensible heat of the high-temperature air at the humidifier outlet is removed to convert it to hot air, and the removed heat is used to generate air at the air heating unit inlet. Hot air evaporative humidifier equipped with a heat pipe device that can raise the temperature of the air. 3. The hot air vaporizing humidifier according to claim 1, wherein an electric heater for heating is installed outside the humidifier by using a heat pipe device to heat the air. .