KR20030026033A - A heat pump type drying machine and cold-storage room - Google Patents

Abstract

PURPOSE: A heat pump type drier and refrigerating storage is provided to improve drying efficiency and energy saving. CONSTITUTION: A drier and refrigerating storage comprises a housing(10) having an inside space divided into a refrigerator compartment(20) and a drier compartment(30); an air distributing plate(40) placed in the refrigerator compartment and the drier compartment for food to be placed thereon and having a plurality of air distributing holes(41); a chilled air circulating path(50) and a hot air circulating path(60) formed to be separated from insides of the refrigerator compartment and the drier compartment; blowers(70) placed on upper parts of the refrigerator compartment and the drier compartment; a drier compartment humidity controlling device placed on one side of the drier compartment; a compressor placed on a middle upper part of the housing; a main condenser(150) placed on the upper part of the drier compartment; an auxiliary condenser(160) placed outside the housing; an auxiliary condenser controlling device; an expansion valve(180) placed on a refrigerant pipe(140); an evaporator(190) placed on the upper part of the refrigerator compartment; and an electric heater(200) placed on one side of the evaporator to control over-cooling of the refrigerator compartment due to continuous working of the compressor.

Description

Heat pump type drying machine and cold-storage room

The present invention relates to a heat pump type dryer and a refrigerated warehouse, and more particularly, in storing and drying agricultural, water, and livestock products, a separate drying chamber and a refrigerating chamber can be quickly dried and refrigerated at the same time. The present invention relates to a heat pump type dryer and a cold storage that can contribute to drying efficiency and energy saving by installing a main heat exchanger in a drying chamber of a pump dryer and an auxiliary heat exchanger outside of the drying chamber to prevent an overload of a compressor.

In general, in order to dry agricultural, water, and livestock products, it is preferable to dry naturally, that is, to dry the agricultural, water, and livestock products for a long time under moderate sunshine and temperature and humidity for drying.

However, the natural drying has a problem that not only the drying condition is greatly influenced by the weather, that is, the weather conditions, but also a lot of manpower is required and the drying time takes a lot according to the above.

In order to solve the above problems, various drying methods have been developed for the ease of storage or transport of agricultural, water and livestock products, and the refrigeration (freezing) storage method is a method for maintaining the freshness of agricultural, water and livestock products. It is becoming common.

In addition, since the agricultural, water, and livestock products are often stored refrigerated after drying, a drying and refrigeration apparatus has been developed to selectively dry or refrigerate a single warehouse in order to reduce the processing and logistics costs. It is installed by uniting the main components of the drying refrigerator unit on one side of the drying refrigerator, and the unit connects the air-cooled condenser and the water condenser in parallel between the compressor and the evaporator to provide the high-temperature / high-pressure refrigerant gas in the water-cooled condenser. After cooling and dehumidifying the indoor air with an evaporator, the air cooled in the air-cooled condenser is reheated and refluxed in a dry refrigerator by a blower to perform drying of the dried product.After drying, the water-cooled condenser and the evaporator are dried. By lowering the temperature in the dry refrigerator to operate the refrigeration.

However, the drying and refrigerating unit is installed separately from the water-cooled condenser to cool the indoor air, and the refrigerant gas cooled in the water-cooled condenser again cooled in the evaporator and then heated in the air-cooled condenser to select the drying or refrigeration function in one case Not only because the structure is complicated, but also because the drying and refrigeration can not be performed at the same time, only a single function can be performed continuously, which increases the processing time and cost.

In addition, as the drying progresses, a problem occurs such that the overload detector is operated by the overload of the compressor due to the lack of heat exchange due to the temperature rise in the dry chamber.

The present invention was devised to solve the above problems, and an object of the present invention is to quickly dry and store agricultural, water and livestock products at the same time, and also lack of heat exchange due to the increase in drying room temperature according to the continuous drying process. It is possible to prevent the overheating of the heat exchanger caused by the heat supply to the drying chamber by continuous operation of the compressor to provide a bottom pump dryer and cold storage that can bring drying efficiency and energy saving.

The configuration of the present invention for achieving the above object is divided into a predetermined space in both sides to form a refrigerating chamber for storing one side food refrigeration and the other side of the housing formed a drying chamber for drying the predetermined food, the refrigerator compartment and An air distribution plate provided in a drying chamber and seating a predetermined food and having a plurality of air distribution holes therein; A blower provided in the air to circulate a predetermined cold / hot air, one side of the drying chamber provided to control humidity in the drying chamber, and a compressor provided at the center of the housing to compress a predetermined refrigerant; A main condenser provided at an upper portion of the drying chamber of the housing to liquefy a predetermined refrigerant; An auxiliary condenser provided therein; an auxiliary condenser control means for controlling the auxiliary condenser; an expansion valve provided on the refrigerant pipe to adjust a flow rate of the refrigerant; an evaporator provided at an upper portion in the refrigerating chamber of the housing to vaporize the refrigerant. It is provided on one side of the evaporator, characterized in that consisting of an electric heater for controlling the supercooling of the refrigerator due to the continuous operation of the compressor.

More preferably, the drying chamber humidity control means has an air inlet through which one side of the drying chamber is opened to allow the outside air to flow in, and the wet air outlet which is discharged to the outside of the humid air in the drying chamber and connected orthogonally to the air inlet. The air inlet and the wet air outlet are provided at a position perpendicular to the rotation, characterized in that consisting of a damper for opening and closing the air inlet and the wet air outlet.

More preferably, the auxiliary condenser control means includes a refrigerant pressure sensor provided on the refrigerant pipe for measuring the pressure of the refrigerant, a refrigerant temperature sensor provided on the refrigerant pipe for measuring the temperature of the refrigerant, the refrigerant pressure sensor, and Characterized in that it consists of a secondary condenser blower for automatically adjusting the compressor overload by the pressure and temperature sensed by the refrigerant temperature sensor.

Figure 1 is a schematic cross-sectional view showing the internal configuration of the heat pump type dryer and refrigerating warehouse of the present invention,

Figure 2 is a circuit diagram showing a control method of the heat pump type dryer and refrigerating warehouse of the present invention.

<Description of Symbols for Main Parts of Drawings>

10 housing 20 cold storage room

30: drying chamber 40: air distribution board

41: air distribution hole 50: cold wind circulation

60: hot air circulation path 70: blower

71: blower for auxiliary condenser 80: temperature sensor of the refrigerating chamber

90: dry chamber temperature sensor 100: air inlet

110: wet air outlet 120: damper

130 compressor 140 refrigerant pipe

150: main condenser 160: auxiliary condenser

180: expansion valve 190: evaporator

200: electric heater 210: refrigerant pressure sensor

220: refrigerant temperature sensor

Hereinafter, a control method of a heat pump type dryer of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic cross-sectional view showing the internal configuration of the heat pump type dryer and refrigerating warehouse of the present invention, Figure 2 is a circuit diagram showing a control method of the heat pump type dryer and refrigerating warehouse of the present invention.

As shown in the figure, the predetermined space inside is partitioned on both sides, so that one side forms a refrigerating chamber 20 for refrigerating and storing a predetermined food, and the other side forms a drying chamber 30 for drying the predetermined food, and a predetermined heat insulating outer wall. Formed housing 10 is provided.

In the center of the refrigerating chamber 20 and the drying chamber 30, a predetermined food is seated and an air distribution plate 40 having a plurality of air distribution holes 41 is formed, and the refrigerating chamber 20 and the drying chamber 30 Cold / hot air circulation paths 50 and 60 are formed to circulate a predetermined hot air and cold air at predetermined intervals from an inner surface of the inner surface of the air.

A blower 70 is provided above the refrigerating chamber 20 and the drying chamber 30 to circulate a predetermined cold / hot air.

One side of the refrigerating chamber 20 and the drying chamber 30 is provided with a refrigerating chamber temperature sensor 80 and a drying chamber temperature sensor 90 for sensing the temperature of the refrigerating chamber 20 and the drying chamber 30.

On the other hand, one side of the drying chamber 30 is opened and the air inlet 100 through which the outside air is introduced and the wet air outlet 110 through which the humid air in the drying chamber 30 is discharged to the outside is connected orthogonally. The air inlet 100 and the wet air outlet 110 are rotated at orthogonal positions, and a damper 120 is provided to open and close the air inlet 100 and the wet air outlet 110.

A compressor 130 for compressing a predetermined refrigerant is provided in the center of the housing 10, and an upper portion of the drying chamber 30 of the housing 10 is connected to the compressor 130 and a predetermined refrigerant pipe 140. The main condenser 150 is provided, and the auxiliary condenser 160 is provided on the refrigerant pipe 140 tube outside the housing 10, and an auxiliary condenser blower 71 is provided at one side of the auxiliary condenser 160. Equipped.

In addition, the auxiliary condenser 160 is provided with an expansion valve 180 for controlling the flow rate of the refrigerant on the refrigerant pipe 140, the evaporator 190 in the upper portion of the refrigerating chamber 20 of the housing 10 Equipped.

One side of the evaporator 190 is provided with an electric heater 200 for controlling the supercooling of the refrigerating chamber due to the continuous operation of the compressor.

In addition, a refrigerant pressure sensor 210 and a refrigerant temperature sensor 220 for detecting the pressure and temperature are installed on the refrigerant pipe 140.

According to the present invention configured as described above, when a predetermined power is first applied to the compressor, the predetermined refrigerant is compressed to high temperature and high pressure to be liquefied by being moved to the main condenser provided in the upper part of the drying chamber, and the main condenser emits predetermined heat.

When a predetermined heat is emitted from the main condenser, the warm air is circulated by the blowing of the blower provided above the main condenser to dry the goods in the dry chamber.

The warm air is supplied to the product through the air distribution hole of the air distribution plate on which the product is seated, and circulates along the hot air circulation path formed on the inner surface of the drying chamber to effectively dry the product.

Due to the continuous drying of the product, the warm air in the drying room becomes wet air, and the effect of the product drying is reduced. At this time, the damper rotates to open an air inlet and a wet air outlet to discharge the wet air, and to cool the outside. The air is introduced to be heated by the heat of the main condenser and the air becomes hot and dry to dry the goods in the drying chamber.

Meanwhile, the refrigerant liquefied at high pressure in the main condenser reaches an expansion valve along a predetermined refrigerant pipe, and the expansion valve injects the liquefied refrigerant into the evaporator provided in the refrigerating chamber while adjusting the flow rate of the liquefied refrigerant.

At this time, the refrigerant injected into the evaporator expands rapidly and absorbs heat from the surroundings and vaporizes, thereby rapidly decreasing the temperature around the evaporator.

The blower provided in the upper portion of the evaporator blows low-temperature air around the evaporator to supply cold air to the product through the air distribution hole of the air distribution plate in the refrigerating chamber, and is circulated along the cold air circulation path formed in the refrigerating chamber inner surface. Effectively cool the fridge.

The product is refrigerated or dried while repeating the above process. When the compressor is overloaded due to heat exchange shortage of the main condenser due to the temperature increase of the drying chamber due to the continuous drying process, the refrigerant pressure sensor and the refrigerant temperature sensor provided on the refrigerant pipe are provided. Receiving the detection signal of the pressure and the temperature of the refrigerant measured by the blower for the auxiliary condenser to facilitate the heat discharge of the auxiliary condenser.

On the other hand, one side of the evaporator provided in the refrigerating chamber was provided with an electric heater, by removing the frost generated on the surface of the evaporator due to the continuous operation of the refrigerator to prevent the smooth evaporation of the refrigerant of the evaporator by the electric heater, The evaporator can perform a smooth function, and also the temperature control in the refrigerating chamber can be controlled to control the supercooling of the refrigerating chamber due to the continuous operation of the compressor.

As described above, the present invention can quickly dry and store agricultural, water and livestock products at the same time, and is equipped with a separate auxiliary condenser to prevent overload of the compressor due to continuous drying process to increase drying efficiency and energy. It has the effect of bringing savings.

Claims (3)

The predetermined space inside is divided into two sides, one side forms a refrigerating chamber for refrigerating predetermined foods, and the other side forms a housing for forming a drying chamber for drying the predetermined foods; An air distribution plate having an air distribution hole, a cold / hot air circulation path formed to circulate hot air and cold air at predetermined intervals from the inner surfaces of the refrigerating chamber and the drying chamber, and a blower provided at an upper portion of the refrigerating chamber and the drying chamber to circulate predetermined cold / hot air. One side of the drying chamber is provided, the drying chamber humidity control means for adjusting the humidity in the drying chamber, a compressor provided at the upper portion of the housing to compress a predetermined refrigerant, and provided in the upper portion of the drying chamber of the housing A main condenser for liquefying refrigerant, an auxiliary condenser provided outside the housing, and the auxiliary condenser An auxiliary condenser control means, an expansion valve provided on the refrigerant pipe to adjust a flow rate of the refrigerant, an evaporator provided at an upper portion in the refrigerating chamber of the housing to vaporize the refrigerant, and a compressor provided on one side of the evaporator Heat pump type dryer and cold storage, characterized in that consisting of an electric heater to control the supercooling of the refrigerating chamber due to operation. The method of claim 1, wherein the drying chamber humidity control means, One side of the drying chamber is opened and the air inlet through which the outside air flows, the wet air in the drying chamber is discharged to the outside and connected to the air inlet orthogonal to the air inlet, the air inlet and the wet air outlet orthogonal position Heat pump type dryer and cold storage, characterized in that consisting of a damper for rotating and opening and closing the air inlet and the wet air outlet. The method of claim 1, wherein the auxiliary condenser control means, A refrigerant pressure sensor provided on the refrigerant pipe to measure the pressure of the refrigerant, a refrigerant temperature sensor provided on the refrigerant pipe to measure the temperature of the refrigerant, and a pressure and temperature sensed by the refrigerant pressure sensor and the refrigerant temperature sensor. And a heat pump type dryer and refrigerating warehouse, comprising a blower for an auxiliary condenser that automatically adjusts the compressor overload.