CN206583244U - An energy-saving heat pump dryer - Google Patents

Abstract

The utility model discloses an energy-conserving heat pump drying-machine, including an inclosed stoving room, the stoving room is equipped with the air treatment space and is used for depositing the parking space of drying the material, parking space and air treatment space keep apart each other, the parking space top is equipped with the air supply passageway, the air supply passageway is linked together with the air treatment space, the air treatment space forms the return air passageway that communicates each other with the parking space below, the inside at least a set of heat pump condenser that is equipped with of air supply passageway, the return air passageway is equipped with at least a set of heat pump evaporimeter, still be equipped with the fan between heat pump evaporimeter and heat pump condenser. The energy-saving heat pump dryer applies the natural attribute of the heat pump system in the heating and refrigerating processes, and makes full use of the cold and hot energy, so that the energy consumption of the system is low, and the energy efficiency is high.

Description

An energy-saving heat pump dryer

technical field

The utility model relates to drying equipment, in particular to an energy-saving heat pump dryer.

Background technique

The heat pump dryer will gradually replace the traditional dryer due to its energy saving, clean, uniform temperature, fast drying speed and high quality of the dried material. The existing heat pump dryers on the market mainly include the following types: 1. An exhaust fan is installed on the roof of the dryer, and it is dried by replenishing new hot air while exhausting hot and humid air; 2. The heat pump uses two compressors, one compressor is responsible for heating, and the other compressor is responsible for cooling and dehumidification; 3. , Using vacuum dehumidification mode drying. These drying methods either have disadvantages such as poor effect and low energy efficiency, or have disadvantages such as high cost and complicated manufacturing process.

Utility model content

The purpose of the utility model is to provide an energy-saving heat pump dryer.

According to one aspect of the utility model, an energy-saving heat pump dryer is provided, which includes a closed drying room, the drying room is provided with an air treatment space and a storage space for storing drying materials, and the storage space and the air treatment The space is isolated from each other, and there is an air supply channel above the storage space, the air supply channel is connected with the air treatment space, and the air treatment space and the storage space are connected to each other to form a return air channel, and at least one set of heat pump condensers is arranged inside the air supply channel , the return air channel is provided with at least one set of heat pump evaporators, and a fan is also provided between the heat pump evaporator and the heat pump condenser. When the fan is working, the air is blown to the heat pump condenser. The overheated air is sent into the storage space through the air supply channel, and the air in the storage space enters the air treatment space through the return air channel through the heat pump evaporator, and then is blown to the heat pump condenser by the fan, so that the air flows between the air treatment space and the heat pump evaporator. The circulation flows between the storage spaces, and the temperature of the hot and humid air passing through the storage spaces decreases when passing through the heat pump evaporator, and the moisture therein condenses on the heat pump evaporator.

In some embodiments, the heat pump condenser is connected to the heat pump evaporator through a refrigerant pipeline, and the heat pump evaporator (13) is designed to not completely evaporate.

In some embodiments, a throttling device is connected in series with the refrigerant pipeline.

In some embodiments, the refrigerant pipeline is further connected in series with a dry filter or a sight glass.

In some embodiments, a heat pump host is also included, the heat pump host includes a host evaporator and a compressor, the heat pump evaporator is connected to the host evaporator, and the heat pump condenser is connected to the compressor.

In some embodiments, a water collecting pan is provided under the heat pump evaporator, and the condensed water collected in the water collecting pan is discharged to the outside of the drying room through a drain pipe.

Compared with the prior art, an energy-saving heat pump dryer provided by the utility model has the following beneficial effects:

The energy-saving heat pump dryer makes the air in the drying room form a closed cycle, prevents the fresh air with high humidity from entering in the middle, and the air in the drying room continues to dehumidify and dry, which will speed up the drying speed; The air is removed again and again and becomes drier, so that the dried material can be dried without high temperature, so that the dried material will not be discolored, deteriorated or even ripened due to excessive temperature While affecting the quality of the dried material, the fineness of the dried material is infinitely close to the effect of drying in the sun. The energy-saving heat pump dryer uses the natural attributes of the heat pump system to have both heating and cooling processes, and makes full use of its cold and heat energy, making the system consume less energy and have higher energy efficiency.

The energy-saving heat pump dryer solution provided by the utility model overcomes the deficiencies of the prior art, applies the self-property of the heat pump in operation while heating and cooling at the same time, and makes full use of its heat energy and cold energy to realize dehumidification and drying. The main features are low energy consumption, fast drying, low drying temperature, and simple equipment manufacturing process.

Description of drawings

Figure 1 is a schematic diagram of an energy-saving heat pump dryer in an embodiment of the present invention,

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 schematically shows an energy-saving heat pump dryer according to an embodiment of the present utility model, which is suitable for drying various substances. As shown in the figure, the device includes a drying room 1 and a heat pump host.

Wherein, the heat pump host includes a host evaporator 2 and a compressor 3 .

The drying room 1 is provided with an air treatment space 1b and a storage space 1a for storing drying materials.

The storage space 1a is isolated from the air treatment space 1b.

An air supply channel 14 is provided above the storage space 1a.

The air supply passage 14 communicates with the air treatment space 1b.

The air return passage 15 communicating with each other is formed under the air treatment space 1b and the storage space 1a.

At least one set of heat pump condensers 12 is arranged inside the air supply channel 14 .

The return air channel 15 is provided with at least one set of heat pump evaporators 13 .

A fan 11 is also provided between the heat pump evaporator 13 and the heat pump condenser 12 .

When the fan 11 is working, the air is blown to the heat pump condenser 12, and the heat pump condenser 12 is used to heat the air flow. The air channel 15 enters the air treatment space 1b through the heat pump evaporator 13, and is blown to the heat pump condenser 12 by the fan 11, so that the air circulates between the air treatment space 1b and the storage space 1a.

The hot and humid air passing through the storage space 1 a decreases in temperature when passing through the heat pump evaporator 13 , and the moisture therein condenses on the heat pump evaporator 13 .

The heat pump condenser 12 is connected with the heat pump evaporator 13 through the refrigerant pipeline 4 .

The refrigerant pipeline 4 is connected in series with a throttling device, a sight glass and a dry filter.

The heat pump evaporator 13 is connected with the host evaporator 2 , and the heat pump condenser 12 is connected with the compressor 3 .

Below the heat pump evaporator 13 there is also a water collecting pan 131 , which drains the condensed water collected in the water collecting pan to the outside of the drying room 1 through a drain pipe 132 .

The heat pump condenser 12 in the air supply channel 14 is connected to the exhaust end of the compressor 3, and other auxiliary accessories such as oil separators and valves may be installed in the middle if necessary. The compressor 3 compresses the gaseous refrigerant medium to form high temperature and high pressure. The refrigerant gas exchanges heat with the air blown into the drying room 1 through the heat pump condenser 12, and releases heat to heat the air to the set temperature, while the high-temperature and high-pressure refrigerant is cooled and condensed into a liquid refrigerant. Driven by its high pressure, the liquid refrigerant flows through the throttling device of the refrigerant pipeline 4, and then forms a mist-like gas-liquid mixed refrigerant, which is sprayed to the heat pump evaporator 13 to exchange heat with the hot and humid air in the drying room 1, absorbing heat. The hot and humid air is cooled until condensation condenses into water droplets, and at the same time, the mist gaseous refrigerant absorbs heat and starts to evaporate. At this time, the heat pump evaporator 13 is designed to be incompletely evaporated because it only plays the role of dehumidification. Multiple heat pump evaporators 13 can be connected to the host evaporator 2 in parallel or in series, and the incompletely evaporated mixed refrigerant is sent to the host evaporator. 2 Continue to evaporate into a gaseous refrigerant with a certain degree of superheat, and send it to compressor 3 for recompression after passing through necessary auxiliary accessories.

The moisture evaporated from the material to be dried in the storage space 1a of the drying room 1 is mixed with the hot air in the space to form humid air, which passes through the heat pump evaporator from the return air channel 15 under the action of the fan 11 installed in the air treatment space 1b 13. The heat exchange capacity of the heat pump evaporator 13 is designed and calculated so that the surface temperature is lower than the dew point of the humid air. When the humid air flows through the heat pump evaporator 13, the water vapor condenses into water droplets and is collected into the heat pump for evaporation. In the water collecting pan (131) below the device 13, the condensed water is discharged through the drain pipe 132 installed at the bottom of the water collecting pan 131.

Simultaneously, the wet air becomes dry air after the moisture is separated, and is sent to the heat pump condenser 12 for heating under the action of the blower fan 11, and the heated dry air is distributed to the storage space 1a through the air supply channel 14, and is distributed to the storage space 1a at a reasonable rate. Azimuth blows to the material to be dried, so that the moisture in the material to be dried evaporates again. This cycle achieves the purpose of material drying.

What have been described above are only some embodiments of the present utility model. For those skilled in the art, without departing from the inventive concept of the present utility model, some modifications and improvements can be made, and these all belong to the protection scope of the present utility model.

Claims (6)

1. a kind of energy saving heat pump dryer, it is characterised in that including a closed baking room (1), baking room (1) is provided with air Space (1b) and the parking space (1a) for depositing drying material are handled, the parking space (1a) is empty with the air-treatment Between (1b) it is mutually isolated, air-supply passage (14), the air-supply passage (14) and the sky are provided with above the parking space (1a) (1b) is connected in gas disposal space, and the air handling space (1b) and the parking space (1a) are formed below interconnected Provided with least one set of heat pump condenser (12), the return air channel (15) inside return air channel (15), the air-supply passage (14) Provided with least one set of evaporator with heat pump (13), it is additionally provided between the evaporator with heat pump (13) and the heat pump condenser (12) Blower fan (11), during blower fan (11) work, the heat pump condenser (12) is blowed to by air, the heat pump condenser (12) is used Heated in air-flow, the air after heating is sent into the parking space (1a) by the air-supply passage (14), The interior air of the parking space (1a) enters the air by the return air channel (15) via the evaporator with heat pump (13) Handle space (1b), then the heat pump condenser (12) will be blowed to by the blower fan (11), thus air is in the air-treatment Circulated between space (1b) and parking space (1a), the damp-heat air after the parking space (1a) is by described Temperature is reduced during evaporator with heat pump (13), and hydrogenesis therein is on the evaporator with heat pump (13).

2. energy saving heat pump dryer according to claim 1, it is characterised in that the heat pump condenser (12) passes through refrigerant Pipeline (4) is connected with described evaporator with heat pump (13), and the evaporator with heat pump (13) is designed as incomplete evaporation.

3. energy saving heat pump dryer according to claim 2, it is characterised in that the refrigerant pipe (4) is in series with throttling Device.

4. energy saving heat pump dryer according to claim 3, it is characterised in that the refrigerant pipe (4) is also in series with dry Dry filter or liquid-sighting glass.

5. the energy saving heat pump dryer according to claim 1 or 2 or 3 or 4 any one, it is characterised in that also including one Heat pump main frame, the heat pump main frame includes main frame evaporator (2) and compressor (3), described evaporator with heat pump (13) with it is described Main frame evaporator (2) is connected, and the heat pump condenser (12) is connected with the compressor (3).

6. energy saving heat pump dryer according to claim 1, it is characterised in that also set below the evaporator with heat pump (13) There is water-collecting tray (131), the condensed water of collection therein is discharged into described by water-collecting tray (131) piece drainpipe (132) of offer Baking room (1) is outside.