JPH0663693B2 - Humidifier and showcase with humidifier - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a humidifier used for indoor air conditioning and prevention of drying, and a showcase using the humidifier.

(Prior art) Conventionally requiring humidification include indoor air conditioning during heating and humidification to prevent food such as vegetables, cakes and dairy products from drying, such as indoors, electric freezers or shows. Humidifiers are also used in cases and the like.

As the humidifying means, there are a means using an ultrasonic oscillator, a method by spraying water, a method by heating and evaporation, and a method by natural evaporation of water by forced convection of air.

For example, in Japanese Patent Laid-Open No. 63-46364, mist generated by an ultrasonic transducer is supplied from the upper part of the showcase into the showcase together with cooling air in order to prevent the products displayed in the store from drying in the open showcase. Things have been proposed.

Further, the one utilizing the Perche effect is disclosed in JP-A-61-96380.
As can be seen in Japanese Laid-Open Patent Publication No. JP-A-2003-242, the prior art using the element having the Peltier effect mainly utilizes the cooling effect of the element, and is mainly used for indoor air conditioning, cold storage, underfloor cold storage, and the like.

Further, in Japanese Utility Model Laid-Open No. 61-44189 utilizing the Peltier effect, the heat generating action and heat absorbing action of the element are used for heating and cooling, but it is not used as a humidifier.

Although there are various humidifying or cooling means as described above, as a conventional humidifying means, a water evaporation method using a heater or the like as disclosed in JP-A-62-172169 is generally used.

(Problems to be Solved by the Invention) Generally, in cakes and dairy products, it is preferable that the size of water particles generated from a humidifying means of air by natural evaporation or the like.

However, among the conventional means used for humidifying fresh foods, there are large water particles for humidification and the water is attached to foods, cases, etc. by maintaining humidity to form water droplets. Sometimes it is not suitable for cakes and dairy products.

In addition, in the water evaporation method using a heater or the like, humidified steam in a showcase or a refrigerator has a high temperature, which adversely affects the cooling effect of the environment.

To prevent this adverse effect, in JP-A-62-172169, when the outside air temperature is below a predetermined value, the heater of the humidifier is continuously operated, and when the outside air temperature is above a predetermined value,
It has a complicated structure that operates by linking the heater of the humidifier to the cooler.

Therefore, an object of the present invention is to solve the above-mentioned drawbacks and to obtain a humidifier capable of performing optimum humidification without impairing the cooling effect, and a showcase including the humidifier.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides the following means.

That is, a water tank is attached to the heat radiating side of the element having the Peltier effect to obtain humidified steam by heating and evaporating water by the heat radiated heat of the element, and a cooling fan of the element is provided on the cooling side of the element. And humidifying steam obtained on the heat radiating side are discharged from the same outlet, and this humidifier is provided on the cool air discharging side of the cooling coil of the showcase.

(Operation) Element having Peltier effect (hereinafter referred to as Peltier element)
The heat radiating side can heat and evaporate water, and the air cooled on the cooling side of the Peltier element and the heat radiating side radiating air and steam are mixed and discharged.

(Example) Hereinafter, the Example shown in drawing is described.

According to FIGS. 1 and 2, the humidifier (A) has a support frame (3) on a shelf plate (2) formed inside the exterior body (1), and a Peltier element sandwiched with bakelite on the support frame (3). (4) is supported. Radiating fins (5) and cooling fins (6) are formed above and below the Peltier element (4), and the upper side is the heat radiating side and the lower side is the cooling side.

A water tank (7) is formed on the upper fin side,
A cooling fan (8) is provided on the cooling fin side.

The shelf plate (2) is formed with an intake port (9), and the exhaust port (10) is provided above the exterior body (1).

A space (14) is formed between the outer periphery of the Peltier element (4) and the water storage layer (7) with the inside of the exterior body (1) to form one flow path, and thus the support frame (3) is formed. Is the vent (1
There is 1).

The exterior body (1) has a pedestal (13) in which a passage (12) is formed.

When the Peltier element (4) of the humidifier (A) as described above is energized, the water in the water storage tank (7) is heated and evaporated on the heat radiation side thereof, and the fan (8) sucks it from the intake port (9). The cooled air is cooled by the fins (6) on the cooling side, and the cooled air reaches the exhaust port (10) through the passage (14) from the ventilation port (11). Are mixed and discharged.

Therefore, the cooling of the environment having humidification as the total heat amount is not hindered.

Then, since what is discharged from the exhaust port (10) is caused by evaporation, the water particles for humidification become fine.

The one shown in FIG. 3 is one in which a handle (15) is attached to the exterior body (1) so that it can be carried, and a lid (17) is covered via a packing (16).
A humidification pipe (18) is formed on the lid (17).

The humidification pipe (18) may be opened / closed by a known means, or may be constructed so that steam can be discharged to the outside so that the humidification can be adjusted.

By providing the humidifying pipe (18), the cooling air and the humidified air are sufficiently mixed.

The radiating fins (5) and the cooling fins (6) are made of an aluminum plate, and the Peltier element (4) is supported by the support frame (3) via bakelite (19) or the like.

In the illustrated example, the Peltier element (4) does not directly contact the heat dissipation fin (5) and the cooling fin (6), but it is better to directly contact them.

Further, by providing a guide plate for guiding the humidified air toward the liquid surface of the water storage tank (7) at the outlet of the discharge port (10), the cooling side air is brought into contact with the hot water surface to efficiently generate the humidified air. Can be made.

To attach the above humidifier (A) to the showcase (20), a device as shown in FIG. 4 is used.

That is, (21) is a front opening of the showcase (20), and there is a partition plate (24) that forms a ventilation passage (23) with the inner wall surface of the heat insulation wall (22). A humidifier (A) is arranged in the lower space (25), and the humidifier (A) is arranged after the cooling coil (16). An air circulation fan (27) is provided in front of the cooling coil (26).

In the storage room (28) surrounded by the partition plate (24), there is a multi-tiered shelf (29).

(30) and (31) are air outlets and suction ports formed at the upper and lower ends of the opening (21), forcing the air humidified by the humidifier (A) by the air circulation fan (27) as indicated by the arrow. The air curtain is formed in the opening (21) while being circulated to humidify the inside of the storage chamber (28).

By installing the humidifier (A) on the cooling air discharge side of the cooling coil (26) as described above, the humidified air is cooled by the cooling coil (26).
Does not directly contact with and condense.

That is, when the humidifier (A) is provided in front of the cooling coil (26), the humidified air comes into direct contact with the cooling coil (26) and condenses, resulting in waste of cooling efficiency and difficulty in humidification adjustment.

Since the humidifier (A) faces the air passage (23), the cooling air and the humidified air are sufficiently mixed.

(Effects of the Invention) In the present invention, water is heated and evaporated by direct heat transfer through the Peltier element, that is, the element having the Peltier effect and the heat radiating side of the element and the water tank. Can be humidified without doing.

Also, the air cooled on the cooling side of the element having the Peltier effect is mixed with the radiating air and the radiating air on the radiating side to be discharged, so that low temperature humidified air can be obtained. The amount of heat does not hinder the cooling load of the refrigeration equipment.

Further, since the water particles are fine due to the humidification by evaporation, it can be used for maintaining a high humidity environment such as foods that do not like water drops.

And when arranging the humidifier in the showcase,
In addition to the various effects described above, it can be installed in a showcase without major changes in the refrigeration system or the showcase structure, so it can be easily installed in an existing showcase, and a humidifier should be placed on the cool air discharge side of the cooling coil. As a result, the humidified air does not come into contact with the coil to condense and there is no loss of humidified steam.

In any case, the present invention does not change the total amount of heat when the amount of heat generated on the heating side of the Peltier element is mixed with the low temperature air on the cooling side and is discharged, and the humidification is evaporated without impairing the cooling efficiency of the humidified environment. Since it can be carried out by means, and humidified air with fine particles can be obtained, the optimum humidifying means for cakes and dairy products can be obtained.

[Brief description of drawings]

 FIG. 1 is a perspective view of the humidifier of the present invention, FIG. 2 is a sectional view of the same as above, FIG. 3 is a sectional view of another example of the humidifier of the present invention, and FIG. 4 is a sectional view of a showcase. ...... Peltier element (5) ...... Heat dissipation fin (6) …… Cooling fin (7) …… Water tank (8) …… Fan (9) …… Intake port (10) …… Exhaust port (20) …… Showcase (26) …… Cooling coil (27) …… Air circulation fan

Claims (2)

[Claims] 1. A water storage tank is provided on the heat radiation side of an element having a Peltier effect, a blower fan is provided on the cooling side, and air cooled on the cooling side of the element and a heat radiation side are provided on an exterior body provided with the element. A humidifier equipped with an outlet that can discharge the obtained humidified steam together. 2. A showcase with a humidifier in which the humidifier according to claim 1 is arranged on the cool air discharge side of a cooling coil of the showcase.