JPH0191827A - Dish dryer - Google Patents

Abstract

PURPOSE: To provide an efficient tableware dryer shortening the time for drying by providing a bypass to a condenser between the sucking hole of a machine chamber and an evaporator and providing a damper for alternately opening/ closing the bypass and an air duct to the evaporator. CONSTITUTION: When the temperature of air in a tableware storage chamber 2 increases and waterdrops on the surface of tableware are evaporated into air, a damper 11 is moved up and a bypass 9 is closed. Therefore, high- temperature and high-humidity air in the tableware storage chamber 2 flows into a cooled evaporator 6, condensed air, turned to dry air, heated by a condenser 8 and sent again from a blowing hole 3 of a machine chamber 5 into the tableware storage chamber 2. Condensed water is dripped into a drain pan 13. This operation is alternately performed in fixed cycles. Since such a tableware dryer enlarges divided steam pressure difference between the waterdrops stuck on the tableware and air in the tableware storage chamber 2, the time for drying can be shortened and the tableware can be efficiently dried.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a dish dryer using a heat pump.

[Background Art] This type of dryer is generally shown in FIG. That is, the evaporator 6, condenser 8, and blower 7 of the heat pump are housed in a machine room 2 having an inlet 4 and an outlet 3, and the machine room 2 communicates with the inside of the tableware storage room 2 through the inlet 4 and outlet 3. A closed cycle air path is formed in the order of the suction port 41, the evaporator 6, the condenser 8, the blower 7, the air outlet 3, and the tableware storage chamber 2.

In this method, in order to evaporate water droplets adhering to the surface of tableware such as when drying dishes, it is efficient to make the water vapor partial pressure difference between the water droplets and the air in the tableware storage chamber 2 as large as possible, but conventional methods It's smaller than that.

[Purpose of the invention]

The present invention has been made in view of the above reasons, and its object is to provide an efficient dish dryer with a shorter drying time.

[Disclosure of the Invention] The dish dryer of the present invention utilizes the dehumidifying effect of a heat pump, and an evaporator, a condenser, and a blower are housed in a machine room having an inlet and an outlet. The air outlet communicates with the tableware storage room, and the air inlet, evaporator, condenser,
A closed cycle air path is formed in the order of the air outlet and the tableware storage room, the evaporator is a regenerative heat exchanger, and a bypass path to the condenser is provided between the suction port and the evaporator. It is characterized by the provision of a damper that can alternately open and close the air passage to the evaporator and the air passage to the evaporator.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

A tableware storage chamber 2 is provided in the upper part of a dish dryer consisting of a hollow box having a door 1, and a machine room is connected to the tableware storage chamber 2 in the lower part of the hollow box through an air outlet 3 and a suction port 4 provided in the upper part. 5 is provided, and the evaporator 6 of the heat pump is connected to the suction port 4 of the machine room 5.
A blower 7 is provided below the outlet 3, a condenser 8 is provided between the evaporator 6 and the blower 7, and the suction port 4, the evaporator 6 , a condenser 8, a blower 7, an air outlet 3, and a tableware storage chamber 2, forming a closed cycle air path in this order.The evaporator 6 is a steam heat exchanger that uses water as a heat storage material. A bypass path 9 to the condenser 6 is provided between the evaporator 6 and the suction port 4, and a damper having the same shape as the cross section of the air path having a fulcrum 10 near the evaporator 6. When one side of 9 is closed, the other side is opened.

(Operation) First, when the heat pump is operated with the damper 11 covering the air path to the evaporator 6 as shown in Fig. 3, the air inside the dish storage chamber 2 is drawn by the blower 7 from the suction port 4 to the lower part of the dish dryer. It flows into the machine room 5, which is provided in The tableware 12 in the storage chamber 2 is heated. At this time, evaporator 6
Since the flow of air is stopped by the damper 11, the heat storage material (water) and the refrigerant exchange heat and store cold.

When the air in the tableware storage chamber 2 becomes hot and the water droplets on the surface of the tableware evaporate into the air, the damper 11 is activated as shown in FIG.
When the air is moved upward and the bypass path 9 is closed, the hot and humid air in the tableware storage room 2 flows to the evaporator 6 where it is cooled and condenses to become dry air, which is heated by the condenser 8 and passes through the blower 7 to the air outlet. 3, the food is sent into the tableware storage chamber 2 again. The condensed water falls into the drain pan 13. The above operations are performed alternately in a constant cycle.

Such a dish dryer increases the water vapor partial pressure difference between water droplets adhering to the surface of dishes and the air in the dish storage chamber 2, so drying time can be shortened and dishes can be dried efficiently.

In addition, in the present invention, the evaporator 6, condenser 8, and blower 7 are installed at the bottom of the dish dryer room 2, but the installation location is not limited thereto.For example, they may be installed at the top. It doesn't matter how many copies you have.

〔Effect of the invention〕

Since the dish dryer of the present invention is configured as described above, by efficiently heating only the condenser, the water vapor partial pressure difference between the water droplets attached to the surface of the dishes and the air in the dish storage room is increased, and the water droplets are The water vapor that has dissolved into the air can be easily dissolved into the air, shortening the drying time and allowing efficient tableware drying.Moreover, the water vapor that has dissolved into the air is cooled and condensed and separated in an evaporator that also uses a heat storage material. It has great dehumidification ability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing an embodiment of the present invention.
Its sectional view, FIGS. 3 and 4, are sectional views of essential parts showing its operating state. FIG. 5 is a sectional view showing a conventional example. 1... Door, 2... Tableware storage room, 3... Air outlet, 4
... Suction port, 5... Machine room, 6... Evaporator, 7.
...Blower, 8...Condenser, 9...Bypass path, 1
0...Fully point of damper, 11...Damper, 12...
Tableware, 13...Drain pan.

Claims (1)

[Claims] (1) The evaporator, condenser, and blower of the heat pump are connected to the tableware storage room through the suction port and discharge port, and the closed cycle air flows through the suction port, evaporator, condenser, blower, outlet, and tableware storage room in this order. In the dish dryer having a passage, the evaporator is a regenerative heat exchanger, a bypass passage to the condenser is provided between the suction port and the evaporator, and an air passage to the evaporator is provided between the bypass passage and the evaporator. A dish dryer characterized by having a damper that can be opened and closed alternately.