JPS62182545A - Humidifying device - Google Patents

Abstract

PURPOSE:To permit to detect and control humidifying amount inexpensively and simply by detecting a temperature difference before and after passing through a water absorbing body and the amount of ventilation. CONSTITUTION:A feed water pipe 3 supplies water to a water absorbing body 1, absorbing water by capillarity while a ventilating device 4 sends air toward the water absorbing body. Temperature sensors 5, 6 detect the temperature difference of air before and after passing through the water absorbing body 1 while an airflow amount detecting device 7 detects the amount of ventilating air. A humidification determining device 8 operates a humidifying amount upon detection by said temperature difference and the amount of ventilation while a ventilating airflow amount control device 10 controls the amount of ventilation of the ventilating device 4 based on the ventilating amount determined by a ventilating amount determining means 9 so as to obtain a desired humidifying amount. Accordingly, the detection and control of the humidifying amount may be effected without employing a special humidity sensor.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an evaporative humidifier used for air conditioning and the like, and particularly to control of the amount of humidification.

[Conventional technology]

In conventional humidifiers, a humidity sensor is used to control the amount of humidification by detecting the humidity of intake air and blown air.

[Problem that the invention seeks to solve]

Conventional humidifiers were configured as described above, requiring the use of expensive humidity sensors.

The problem was that the response was slow and it was susceptible to dirt.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a humidifying device that can inexpensively and easily detect the amount of humidification, and furthermore, can control the amount of humidification.

[Means for solving problems]

The humidifying device according to the present invention includes a water absorbent body, a water supply device that supplies water to the water absorbent body, a blower device that sends air toward the water absorbent body, and a temperature difference between the air before and after passing through the water absorbent body by capillary action. means of detection.

Means for detecting the amount of air blown, means for calculating the amount of humidification at the time of detection from the temperature difference and the amount of air blown, and determining the amount of air blown so as to obtain a desired amount of humidification.

and an air blowing amount control device for controlling the air blowing amount of the air blowing device based on the air blowing amount determined by the air blowing amount determining means.

[Effect]

The humidifying device according to the present invention knows the humidification i by detecting the temperature difference before and after passing through the water absorbing body and the amount of air blown, and controls the amount of air blown based on that, thereby achieving the desired humidity regardless of the intake air condition. humidification amount can be obtained.

〔Example〕

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

In Figure 1, (l) is a water absorbent such as cloth that absorbs water by capillary action, (2) is a water basin that soaks the lower part of the water absorbent with water, and (3) is a water supply pipe that supplies water to the water basin (2). ,(4)
(5) is a blower device or fan that sends air toward the water absorbent body +11; (5) is a first temperature sensor that detects the temperature of the air taken in by the fan [4) before passing through the water absorbent body [1]; , (6) is a second temperature sensor that detects the temperature of the air after passing through the water absorber (11), and (7) is a fan (4).
), (8) is a humidification setting device that sets a desired humidification amount, and (9) is a first. The humidification i' at the time of detection is calculated based on the signals from the second temperature sensor (51, (61) and the air flow rate detection device (7), and the desired humidification amount is set by the humidification amount setting device 18+. (IQ is an airflow rate control device that controls the airflow rate of the fan 141 based on the airflow rate determined by the airflow rate determination device (91), and συ is a water supply pipe (3). ) is a water supply amount control device, and az is a humidification amount display device.

Figure 2 shows the means for determining the air flow rate of the humidifier shown in Figure 1 (
7) Block diagram shown in full center. In the figure, (9
Li is the first. An analog multiplexer into which the second temperature sensor (5), +e+ and the detection output of the air flow rate detection device (7) are input; (9b) is an A/D converter that converts the output into digital; <90) is the input circuit.

(9d) is OPU, (9ri is memory, (9f) is output circuit. Input circuit (9c), oPU
(9(1), memory (9θ), and output circuit (
9f) constitutes a microcomputer.

In the humidifying device configured as described above, the water absorbent body (1
) sucks up water from the basin (2) by capillary force, leaving the surface wet. This water absorber (11 has an air blower (
By blowing air in step 4), water evaporates from the water absorbent body (1) and the air is humidified.

By the way, how much heat is required to evaporate water in this case?

The amount of humidification E, which is all provided by passing air, is expressed by the following equation.

Go p (01-00) K=G: Air volume Op=Specific heat of air θ1: Temperature of air before passing through the water absorber Oo: Temperature of air after passing through the water absorber r: Latent heat of vaporization Therefore, the first. Second temperature sensor f51. +61
The amount of humidification at the time of detection can be determined by knowing the temperature difference of the air before and after passing through the water absorber (11) from the signal from the water absorber (11), and by knowing the amount of air blown from the signal from the air amount detection device (7). The amount of air to be blown is determined based on the relationship between the amount of humidification and the desired amount of humidification set by the user with the amount of humidification setting device (8). These operations are performed by the amount of air determining means (91). In this case, the fan (4) is fully driven based on the determination by the air flow rate determining means (9).

The humidifying lid is displayed by the humidifying amount display device σ2.

In the humidifying device configured in this way, a constant amount of humidification can always be obtained regardless of the conditions of the intake air, without using a special device such as a humidity sensor.

It should be noted that a water supply amount determining function may be added to the air blowing amount determining device (91) according to the above embodiment, so that the water supply amount can also be controlled according to the humidification amount (this can prevent water shortages, overflows, etc.).

Further, in the above embodiment, the humidification amount setting device (8) was used to allow the user to set the desired amount of humidification, but this device was abolished and a memorandum was written in advance. J (
9111) may store the desired humidification amount. Further, it goes without saying that the humidification amount display device Q3 may not be provided if it is not necessary.

Furthermore, in the above embodiment, the first . Second temperature sensor (51
, (Although the case where 61i is used has been described, a thermocouple may also be used (), the same effect as the above embodiment can be obtained.

〔Effect of the invention〕

As described above, according to the present invention, there are 9 a water absorbing body that absorbs water by capillary action, a water supply device that supplies water to the water absorbing body, a blower device that sends air toward the water absorbing body, and a blowing device that sends air through the water absorbing body. means for detecting the temperature difference between the air before and after the air is blown, and means for detecting the amount of air blown.

Humidification i at the time of detection is calculated from the above temperature difference and air flow rate,
Detection of the humidification amount without using the airflow rate humidity sensor of the air blower based on the airflow rate determined by the airflow rate determined by the airflow rate determination means and the airflow rate determination unit. This has the effect of providing a humidifying device that can be controlled.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a humidifying device according to an embodiment of the present invention, and FIG. 2 is a block diagram mainly showing air flow rate determining means of the humidifying device shown in FIG. In the figure, C1) is a water absorber, +21. +3+ is a water supply device. 14) is an air blower + (5), C61 is a sensor that detects the temperature of the air before and after passing through the water absorbing body, (7)
) is an airflow rate detection device, (8j is a humidification amount setting device, (9) is an airflow rate determining means, (fQ is an airflow rate control device, αυ is a water supply amount control device, and Q2 is a humidification amount display device. The same reference numerals in the figures indicate the same or corresponding parts.

Claims (3)

[Claims] (1) A water-absorbing body that absorbs water by capillary action, a water supply device that supplies water to this water-absorbing body, a blower device that sends air toward the water-absorbing body, and a means for detecting the temperature difference between the air before and after passing through the water-absorbing body. , means for detecting the amount of air blown, means for calculating the amount of humidification at the time of detection from the temperature difference and amount of air blown, and determining the amount of air blown so as to obtain a desired humidification amount; and means for determining the amount of air blown. A humidifying device including an air blowing amount control device that controls the air blowing amount of the air blowing device based on the determined air blowing amount. (2) The humidifying device according to claim 1, comprising means for displaying the amount of humidification. (3) A humidifying device according to claim 1 or 2, which comprises means for controlling the amount of water supplied, and the amount of humidification is controlled by controlling the amount of air blown and the amount of water supplied.