JPH03143522A - Dehumidifier - Google Patents

Abstract

PURPOSE:To miniaturize the device by detecting the temp. of cooling part with a temp. detecting means and controlling the strength or the duty cycle of the electric current to be allowed to flow in the element having Peltier effect so that the temp. of the local part to be cooled in the cooling part is kept under the temp. of dew point. CONSTITUTION:The temp. detecting means 8 and the cooling part 6 of the element having Peltier effect are provided in the cooling part 2. The heat generating part 7 of the element having Peltier effect is provided in a heat generating part 3. The temp. of the cooling part 2 is detected with the temp. detecting means 8, and the strength or the duty cycle of the electric current to be allowed to flow in the element having Peltier effect is controlled so that the temp. of the local part to be cooled in the cooling part 2 is kept under the temp. of dew point. As a result, the need of compressor as in the ordinary dehumidifier is eliminated, and the device is miniturized having little noise, and the installation is easy.

Description

[Detailed description of the invention] [Industrial application fields] The present invention relates to a dehumidifier.

[Prior Art] Conventional dehumidifiers compress the air using a pressure #@ machine to liquefy and remove water vapor.

[Problems to be Solved by the Invention] Conventional dehumidifiers have a large pressure capacity, so it has not been possible to downsize the dehumidifier. Additionally, the rotating sound of the compressor was a source of noise.

On the other hand, it is known that if the temperature of the air is cooled to below the dew point temperature, the water vapor in the air will liquefy and become water, allowing moisture to be removed.

Furthermore, when dissimilar metals are connected in a ring shape and a current is passed through them, heat is generated at one of the connected points, and heat absorption, or cooling, occurs at the other connected point, which is known as the Peltier effect.

The present invention performs dehumidification using an element having this Peltier effect (hereinafter referred to as a Peltier effect element).

[Means for solving the problem] The first claim is a dehumidifier having a cooling part and a heat generating part, which includes: a) a temperature detection means and a cooling part of an element having a Peltier effect in the cooling part; , a heat generating part of an element having a Peltier effect in the b0 heat generating part,
The temperature of the cooling part is detected by the temperature detection means, and the magnitude of the current flowing through the element having the Peltier effect or the Peltier effect is adjusted so that the temperature of the cooling part of the cooling part is kept below the dew point temperature. This is a 2i divider characterized by controlling the duty cycle of a current flowing through an element having the following characteristics.

The second claim is that in the dehumidifier of the first claim, the cooling part and the heat generating part are housed in separate casings, and the casing housing the cooling part does not emit heat due to the Peltier effect. It is a dehumidifier with special features.

The third claim is the dehumidifier of the first claim and the second claim, which has a pressure tia machine and cools the air which has been cooled in the cooling section and is saturated with water vapor at a pressure iI. This is a dehumidifier that compresses air using a machine.

[Example] [Example of the first claim] Fig. 1 is an example of the first claim, and shows the inside of a dehumidifier having a cooling section 2 and a heat generating unit fM3. The cooled air 1 cools the air in the cooling part 2, warms the cooled air in the heat generating part 3 again to a set temperature, and sends it outside.
Water droplets that have liquefied as dew are removed from the water vapor in the air, and the cooled air is heated again to dry and dehumidify it.

A cooling portion 6 of the Peltier effect element (indicated by a broken line in FIG. 1) is provided for cooling tM2. The cooling portion 6 cools a cooling plate, which is a portion that cools the cooling portion, and the cooling plate is maintained at a temperature below the dew point temperature.

The air taken in flows between the cooling plates, where it is cooled and the water vapor in the air liquefies into water droplets. Water droplets adhering to the cooling plate travel along the cooling plate and accumulate in the water tank 5. When a certain amount of water accumulates in the water tank 5, the user of the dehumidifier discards the water.

The heat generating portion 3 has a heat generating portion 7 (indicated by a broken line in FIG. 1) of a Peltier effect element, and heats the heat transfer plate of the heat generating portion 3.

The air sent outside is heated by the heat exchanger plate.

The cooling part 6 of the Peltier effect element and the heat generating part 7 of the Peltier effect element form a pair, and by flowing 11 flows in a predetermined direction to both, the cooling part 6 is cooled and the heat generating part 7 generates heat. .

1 and 4 are fans for blowing air, 8 and 9 are temperature sensors that are temperature detection means, and 10 is a heater (shown by broken lines in FIG. 1) that is heating means.

In FIG. 1, a power supply circuit and a control circuit are omitted and not shown.

FIG. 2 is a perspective view of the cooling section 2. FIG. The cooling unit 2 sandwiches a cooling portion 11 of a plurality of Peltier effect elements between a plurality of cooling plates 12, removes heat from the cooling plate 12 with the cooling portion 11, and cools the cooling plate 12.
cool down.

A temperature sensor 8 is attached to the cooling plate 12.
Detects the temperature of The magnitude of the current flowing through the cooling portion and the heat generating portion of the Peltier effect element is controlled so that the temperature of the cooling plate 12 is below the dew point temperature and not below the freezing point temperature.

Like the cooling section 2, the heat generating section 3 also has a structure in which the heat generating section 7 of a plurality of Peltier effect elements is sandwiched between a plurality of heat transfer plates.

A dehumidifier is equipped with a means to detect humidity such as a humidity sensor, and if you set it to automatic #humidity, it will detect the humidity and automatically start dehumidifying when the humidity exceeds a certain level, and the humidity will rise to the set value. When the temperature drops below, dehumidification will stop.

Further, the tlI remover has a heater 10 and a temperature sensor 9 in the heat generating section 3, and when set to heat, it sends out air heated to a certain temperature.

The humidity detected by the humidity detecting means and the temperature detected by the temperature sensor 9 can be displayed to the user of the dehumidifier.

The dehumidifier has an alarm means, and when the temperature of the heat generating part 3 rises abnormally, the temperature sensor 9 detects this and notifies the user with an alarm sound or an alarm display. In case of emergency, dehumidifying operation and heater 1
0 stop heating.

Further, it has a water amount detection means for detecting the amount of water in the water tank 5, and when the amount of water exceeds a certain level, the user is notified by an alarm means. If the amount accumulates above the limit, the dehumidification operation will stop.

Furthermore, if the temperature sensor 8 detects a temperature below or close to freezing, an alarm is issued and the dehumidifying operation is stopped to prevent freezing.

In FIG. 2, the cooling plate 12 is a flat plate, but it can also be a cooling plate with a large surface area, such as a wavy shape.

In the above embodiment, the magnitude of the current flowing through the Peltier effect element was controlled to keep the temperature of the cooling plate 12 below the dew point temperature, but the magnitude of the current flowing through the Peltier effect element 1 was kept constant. The current can also be pulsed and the duty cycle of the current controlled to maintain the temperature of the cold plate 12 below the dew point temperature.

For example, the period of a pulsed current is constant and the temperature is controlled by increasing or decreasing the pulse width, or the pulse width of a pulsed current is constant and the period is lengthened or shortened to increase or decrease the time during which the current does not flow. to control the temperature.

In this way, the amount of current flowing through the Peltier effect element per unit time is controlled to keep the temperature of the cooling plate 12 below the dew point temperature.

[Embodiment of the second claim] The second claim is characterized in that the housing housing the cooling part and the housing housing the heat generating part are separated. For this reason, the housing that houses the cooling unit becomes smaller, and the heat generating unit that generates heat is not included in the housing that houses the cooling unit, so there is no risk of fire in the housing that houses the cooling unit.
The housing housing the cooling unit can be placed in a narrow gap to locally dehumidify.

Fig. 3 is an embodiment of @1 of the second claim, and in the dehumidifier of the first claim, a, the cooling part and the heat generating part are housed in separate housings, and b, the cooling part It has a means for sending the water droplets generated in the cooling part from the housing housing the cooling part to the housing housing the heat generating part, and is characterized in that the housing housing the cooling part does not generate heat due to the Peltier effect. It is a dehumidifier.

In Fig. 3, 21 is a housing housing a cooling part, 31 is a housing housing a heating part, and 41 is a housing 2 for storing liquefied water.
This is a hose that sends water from 1 to the body 31.

FIG. 3 shows the inside of each housing.

However, the power supply circuit, the control circuit, and the power supply line and signal line connecting the housing 21 and the housing 31 are omitted and not shown.

Reference numerals 22 to 27 indicate parts arranged inside the body 21, including a cooling section 22, a heating means 23, a water tank 24, a temperature sensor 25, and fans 26 and 27.

A cooling portion 28 of a Peltier effect element and a temperature sensor 29 are attached to (passed on) the cooling portion 22 .

Similarly, 32 to 36 indicate parts arranged inside the body 31, which are the heat generating part 32, the water tank 33, the water supply 534, and the fans 35 and 36.

A heat generating portion 37 of a Peltier effect element and a temperature sensor 38 are attached to the heat generating portion 32 .

The cooling part 28 of the Peltier effect element and the heat generating part 37 of the Peltier effect element form a pair, and by passing current in a predetermined direction through both, the cooling part 28 is cooled and the heat generating part 37 generates heat. .

The temperature of the cooling plate of the cooling unit 22 is detected by a temperature sensor 29, and by adjusting the magnitude of the current flowing through the cooling unit 28 and the heat generating unit 37, the cooling plate is kept at a temperature below the dew point temperature by the cooling unit 28. It is also kept at a temperature above freezing.

The air taken in by the fan 26 of the housing 21 is sent to the cooling section 2.
2, the water vapor in the air liquefies. The liquefied water droplets accumulate in a water tank 24 below the cooling section 22.

The air that has passed through the cooling section 22 is exhausted by a fan 27.

When the dehumidifier is set to dehumidify and dry at the same time, the heating means 23 performs a heating operation, and the cooled air is warmed again by the heating means 23.

The temperature of the air sent out by the fan 27 is detected by the temperature sensor 25, and when the temperature of the air becomes higher than a set temperature, the heating by the heating means 23 is stopped or the heating temperature is lowered.

The water collected in the water tank 24 is passed through the hose 41 to the housing 3.
It is sent to the water tank 33 in 1.

The heat generated in the pj4 portion 37 of the heat generating section 32 of the housing 31 is transmitted to the heat transfer plate of the heat generating section 32, and is radiated to the air taken in by the fan 35, and the warmed air is transferred to the fan 36.
It is then excreted from the body.

The water supply device 34 of the spinning body 31 absorbs water from the water tank 24 and transfers it to the water tank 33. When water accumulates in the water tank 33 to a certain extent, it is manually discarded.

A temperature sensor 38 is attached to the heat generating part 32 of the housing 31, and if the heat generating part becomes too hot, the user is notified by an alarm.

In this way, in the star remover of the second aspect, the housing 21 that performs division by 4 and the housing 31 that generates heat, radiates heat, and stores liquefied water are separated.

Therefore, the housing 21 can be made smaller than the dehumidifier claimed in vJl, and the housing 21 can be installed in a narrow gap or a closed space separated from the housing 31.

The temperature of the air discharged from the housing 21 can be adjusted by controlling the heating means 23. For example, when installed in a closed space, the temperature inside the space will rise or may rise, which is dangerous. Either the temperature of the air discharged from the housing body 21 is set low, or the power to the heating means 23 is turned off.

The housing 21 and the housing 31 are connected by a hose 41, a power line, and a signal line, and the dehumidifier of the housing 21 can be completely controlled from the housing 31.

Incidentally, in the above embodiment, a case has been described in which the water accumulated in the water tank 33 is manually discarded, but it is also possible to provide a heating means in the water tank 33 and evaporate the water with heat.

Also, in Fig. 3, one housing housing a cold fllT part is connected to one housing housing housing a heat generating part, but it is connected to one housing housing storing a heat generating part. ,
It is also possible to locally dehumidify multiple locations by connecting multiple housings that house cooling units.

FIG. 4 shows a second embodiment of the second claim, which is an example of the connection. Housings 51 to 53 correspond to the housing 21 in FIG. 3, and have a cooling part for a Peltier effect element inside. And the temperature removal e! have the ability. The housing 54 has a Peltier effect element connected therein to the cooling portions of the housings 51 to 53. ! It has a part that dissipates the heat generated and stores liquefied water.

The housings 51 to 53 are smaller than the dehumidifier of the first aspect, and can be installed even in a narrow place.

In the embodiment shown in FIG. 3, the water supply device 34 is provided inside the housing 31, but it can also be provided inside the housing 21.

[Embodiment of the third claim] The Li1 humidifier of the first and second claims of the present invention is
Cooling liquefies and removes water vapor, lowering absolute humidity. Furthermore, the relative humidity is lowered by warming and drying the dehumidified air.

More efficient dehumidification can be achieved by adding a pressure 86 unit to the dehumidifiers of the first and second claims and compressing the air that has been cooled and saturated with water vapor.

The third claim is the dehumidifier of the first claim or the second claim, which includes a pressure t@ machine and compresses the air cooled in the cooling section with the pressure t@ machine. This is a dehumidifier that is characterized by its compact size, but is designed to be more efficient.

The dehumidifier according to the embodiment of the third claim includes a cooling section, a compressor, and a heat generating section.

The air taken into the dehumidifier is sent to the cooling section. The cooling section includes a cooling section of the Peltier effect element, and cools the air to below the dew point temperature. Cool and remove any water droplets.

The cooled air saturated with water vapor is sent to a pressure wI machine and compressed. Compression causes water vapor in the air to condense into water. Since the air before the pressure wI is saturated, condensation can be carried out efficiently.J Condensed water is removed.

The air dehumidified by cooling and compression is discharged to the outside of the dehumidifier.

The heat generating section radiates heat from the heat generating portion of the Peltier effect element.

The air sent out of the dehumidifier can also be heated and dried as described above. If the cooling part and the heating part are in the same housing as in the dehumidifier of the first claim,
Warm it up with the heating section. If the cooling part and the heat generating part are housed in separate housings, the heating means is provided inside the housing in which the cooling part is housed.

[Effects of the Invention] The dehumidifier according to the first aspect does not require a compressor unlike conventional dehumidifiers, is small in size, has low noise, and is easy to install.

The dehumidifier according to the second aspect separates the housing body that stores the cooling part and performs dehumidification from the housing body that stores the heat generating part and performs heat radiation, so that heat is not generated in the housing body that performs dehumidification.

Therefore, the housing for dehumidification can be placed f9 in a narrow place or a closed space, increasing flexibility.

For example, a housing for dehumidification can be installed inside the closet, and a housing for heat radiation can be installed outside the closet.

You can dehumidify the closet even if the door is closed.

In addition, multiple dehumidifying housing bodies can be connected to one heat dissipating housing body, so multiple dehumidifying housing bodies can be installed in the upper and lower tiers of a closet, or they can be installed in multiple closets. A single heat dissipating housing can receive and take away the water generated by all the dehumidifying housings, and can also radiate heat.

The dehumidifier according to the third aspect is designed to improve the efficiency of the dehumidification function.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the inside of an embodiment of the dehumidifier according to the first claim, FIG. 2 is a perspective view of the cooling section, and FIG. 3 is a diagram showing the first embodiment of the dehumidifier according to the second claim. FIG. 4, a diagram showing the inside of the housing, is a second embodiment of the dehumidifier according to the second claim. 1.4--Fan 2--Cooling section 3--Heating section
5--Water tank 6--Cooling part of Peltier effect element 7--Heating part of Bertier effect element 8.9--Temperature sensor 10--Heater 11--Cooling part of Peltier effect element 12--Cooling plate 21--1 Housing housing the cooling unit 22--Cooling unit 23--Heating means 24--Water tank
25.29--Temperature sensor 26.27--Fan 28--Cooling part 31 of Peltier effect element--Casing body 32 housing heat-generating part--Heating part 33--Water tank 34--Water feeder 35.36- - Fan 37 - Peltier effect element heat generating part 38 - Temperature sensor 41 - Hoses 51 to 54 -
−Kyoto body map

Claims (3)

[Claims] (1) In a dehumidifier having a cooling part and a heat generating part, a. The cooling part has a temperature detection means and a cooling part of an element having a Peltier effect, and b. The heat generating part has a Peltier effect. The heat generating part of the element having
The temperature of the cooling part is detected by the temperature detection means, and the magnitude of the current flowing through the element having the Peltier effect or the Peltier effect is adjusted so that the temperature of the cooling part of the cooling part is kept below the dew point temperature. A dehumidifier characterized by controlling the duty cycle of a current flowing through an element having a dehumidifier. (2) The dehumidifier of claim (1) is characterized in that the cooling part and the heat generating part are housed in separate housings, and the housing housing the cooling part does not emit heat due to the Peltier effect.
Dehumidifier. (3) The dehumidifier according to claim (1) or claim (2), characterized in that it has a compressor and compresses the air cooled in the cooling section.