CN216694404U

CN216694404U - Heat pump dryer

Info

Publication number: CN216694404U
Application number: CN202220035918.XU
Authority: CN
Inventors: 朱培江; 徐军旭; 陈武幸; 汪松庆
Original assignee: Yunnan Jiangyuan Technology Co ltd
Current assignee: Yunnan Jiangyuan Technology Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-06-07
Anticipated expiration: 2032-01-07

Abstract

The utility model provides a heat pump dryer, which relates to the technical field of dryers and comprises a heat pump host and a drying bin, wherein the heat pump host comprises an air supply duct, an air return duct, a condenser circulating fan and a heating bin, the air supply duct and the air return duct are connected with the heating bin, the drying bin is connected with the air supply duct and the air return duct, a condenser is arranged in the heating bin, the circulating fan is arranged in the air supply duct, the heat pump host also comprises an air guide duct which is connected with the air return duct, a moisture exhaust valve is arranged at the air guide duct, a fresh air valve is arranged at the heating bin, when the fresh air valve and the moisture exhaust valve are opened, the circulating fan can preferentially suck fresh air, the controllability is strong, the air pressure in the drying bin is increased to positive pressure, a part of air flow is separated to the moisture exhaust valve to exhaust redundant positive pressure wet and hot steam by utilizing the flow guiding function of the air guide duct, and the exhausted wet and hot steam can be uniformly distributed on an evaporator through the action of an outer fan, thereby more fully accomplish the heat exchange, improve the unit efficiency.

Description

Heat pump dryer

Technical Field

The utility model relates to the technical field of dryers, in particular to a heat pump dryer.

Background

The moisture-removing and air-exchanging structure of the existing air source heat pump walnut dryer discharges moisture in a baking room by utilizing a moisture-removing fan and a fresh air inlet valve, and the working moisture-removing and air-exchanging principle is as follows: be equipped with heating (condensation) system storehouse on the equipment, through tuber pipe (wind channel) and material stoving storehouse UNICOM, form a stoving heating cycle system, during the stoving, the inside moisture evaporates gradually into wet steam after the material is heated, in order to get rid of the stoving room with wet steam, establish the hydrofuge fan in heat pump heating (condensation) storehouse and advance the fresh air valve and open in step, be responsible for taking out the humid hot gas in the stoving room to outdoor by the hydrofuge fan, it is responsible for replenishing in new trend to the stoving room to advance the fresh air valve simultaneously, with balanced stoving room internal gas pressure, thereby gradually reduce indoor humidity and reach the purpose that the material was dried. Although the existing dehumidification mode has high dehumidification speed, the air volume of a dehumidification fan is concentrated, which is not beneficial to heat recovery, so that the energy efficiency attenuation of a heat pump host machine is large in the dehumidification process, namely sensible heat and latent heat in exhausted waste heat wet steam are wasted, and the energy is not beneficial to saving; secondly need increase hydrofuge fan, with high costs, to above-mentioned defect, proposed this application.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a heat pump dryer, which solves the problems.

In order to solve the problems, the utility model provides a heat pump dryer, which comprises a heat pump host and a drying bin, wherein the heat pump host comprises an air supply duct, an air return duct, a condenser circulating fan and a heating bin, the air supply duct and the air return duct are both connected with the heating bin, the drying bin is connected with the air supply duct and the air return duct, the condenser is arranged in the heating bin, the circulating fan is arranged in the air supply duct, the heat pump host further comprises an air guide duct, the air guide duct is connected with the air return duct, a moisture exhaust valve is arranged at the air guide duct, and a fresh air valve is arranged at the heating bin.

According to an embodiment of the utility model, the air inlet direction of the fresh air valve faces to the air suction port of the circulating fan.

According to an embodiment of the utility model, the air inlet direction of the fresh air valve and the air suction port of the circulating fan are on the same straight line.

According to an embodiment of the present invention, the heat pump main unit further includes an evaporation chamber, an evaporator is disposed in the evaporation chamber, and the evaporator is configured to perform heat exchange on the gas discharged through the air guide duct.

According to an embodiment of the present invention, the heat pump main unit further includes an external fan, and the external fan is configured to uniformly distribute gas on the evaporator.

According to an embodiment of the utility model, the fresh air valve is connected to the evaporation chamber.

According to an embodiment of the present invention, the air supply duct and the air return duct are respectively connected to two ends of the heating chamber.

According to an embodiment of the present invention, the supply air duct and the return air duct are connected to a lower portion and an upper portion of the heating compartment, respectively.

According to an embodiment of the present invention, a cross-sectional area of a connection passage between the return air duct and the heating compartment is larger than a cross-sectional area of a connection passage between the return air duct and the air guide duct.

According to an embodiment of the present invention, the air guide duct has a bend.

The utility model has the advantages that the fresh air valve is designed at the suction port of the circulating fan, the linear distance is short, the wind resistance is small, when the fresh air valve and the moisture exhaust valve are opened, the circulating fan can suck fresh air preferentially, the controllability is strong, the air pressure in the drying bin is increased to positive pressure, the positive pressure must be discharged through an outlet, at the moment, partial air flow is divided to the moisture exhaust valve to discharge redundant positive pressure wet and hot steam by utilizing the flow guiding effect of the air guide duct, and the discharged wet and hot steam can be uniformly distributed on the evaporator through the action of the outer fan, so that the heat exchange is completed more fully, the energy efficiency of a unit is improved, and the purposes of achieving natural moisture exhaust and improving the energy efficiency by utilizing the positive-negative pressure difference principle structure are realized.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of a heat pump dryer;

FIG. 2 is a schematic structural diagram of a heat pump main unit;

FIG. 3 is a schematic view of the gas flow direction;

70 in FIG. 3: fresh air is introduced; 20: heating the pressurized gas stream; 30: passing the wet and hot steam flow through the material; 40: the air flow is divided through the return air pipe; 50: the outdoor wet and hot steam flow is not discharged; 60: the wet and hot steam airflow discharged by diversion is discharged out of the machine through heat exchange of the evaporator.

Detailed Description

The following description is presented to disclose the utility model only so as to enable one skilled in the art to practice the utility model. The embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other arrangements without departing from the spirit and scope of the utility model.

The utility model provides a heat pump drying-machine, including heat pump host computer 1 and stoving storehouse 2, heat pump host computer 1 includes supply-air duct 6,

return air duct

7, 8 circulating fan 10 of condenser and heated warehouses 13, supply-air duct 6 and return air duct 7 all are connected with heated warehouses 13, stoving storehouse 2 is connected with supply-air duct 6 and return air duct 7, condenser 8 sets up in heated warehouses 13, circulating fan 10 sets up in supply-air duct 6, heat pump host computer 1 still includes wind-guiding duct 5, wind-guiding duct 5 is connected with return air duct 7, wind-guiding duct 5 department is equipped with hydrofuge valve 3, heated warehouses 13 department is equipped with new trend valve 4, the inlet air direction of new trend valve 4 is towards circulating fan 10's the port of breathing in, new trend valve 4 is connected with the external world.

Preferably, the air inlet direction of the fresh air valve 4 is in the same straight line with the air suction port of the circulating fan 10.

Preferably, the heat pump main body 1 further comprises an evaporation cavity, an evaporator 9 is arranged in the evaporation cavity, and the evaporator 9 is used for performing heat exchange on the gas exhausted through the air guide duct 5.

Preferably, the heat pump main unit 1 further comprises an outer fan 11, and the outer fan 11 is used for uniformly distributing the gas on the evaporator 9.

Preferably, the fresh air valve 4 is connected with the evaporation cavity, so that the dehumidified fresh air in the outside and the evaporation cavity can enter at the same time, the temperature of the fresh air is increased, and the energy consumption is saved.

Preferably, the air supply duct 6 and the air return duct 7 are respectively connected to two ends of the heating chamber 13, so that the distance of the air flow in the heating chamber is increased, and the heating effect is ensured.

Preferably, the air supply duct 6 and the air return duct 7 are respectively connected to the lower part and the upper part of the heating chamber 13, and the air supply duct 6 is arranged at the lower part to facilitate the suction of fresh air due to the low temperature of the fresh air.

Preferably, the cross-sectional area of the connecting channel between the air return channel 7 and the heating bin 13 is larger than that of the connecting channel between the air return channel 7 and the air guide channel 5, so that the heat recovery effect is improved.

Preferably, the air guide duct 5 has a bend, so as to avoid the reduction of the heat recovery effect caused by too fast exhaust of the air guide duct 5.

Preferably, the fresh air valve 4 and the moisture exhaust valve 3 are air valves.

The working process is as follows: the circulating fan 10 works, the heat in the condenser 8 is sent into the drying bin 2 through the air supply duct 6 to exchange heat with the material 14, so that the material 14 is heated to generate damp and hot steam 12 and then returns to the heating bin 13 through the air return duct 7, when the damp and the fresh air need to be exhausted, the damp valve 3 and the fresh air valve 4 are simultaneously opened, at the moment, because the fresh air valve 4 is close to the circulating fan 10, the wind resistance is small, the fresh air can preferentially enter the drying bin, the positive pressure in the drying bin 2 is increased, the positive pressure can drive the damp and hot steam 12 to be divided into two parts, the small part can be directly exhausted from the damp valve 3 to the outside of the heating bin 13 through the air guide duct 5, and then the small part is uniformly distributed on the evaporator 9 through the external fan 11 and goes out of the machine after absorbing heat, so that the effect of maximizing the heat recovery is achieved; most of the damp and hot steam can flow into the condenser 8 to be heated continuously and then is sent into the drying bin 2 by the circulating fan 10, so that a reciprocating cycle process of dehumidifying and fresh air feeding is formed, and when dehumidification is not needed, the dehumidifying valve and the fresh air valve are closed synchronously.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The objects of the utility model have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and the embodiments of the present invention may be subject to any changes or modifications without departing from the principles.

Claims

1. A heat pump dryer characterized in that: including heat pump host computer (1) and stoving storehouse (2), heat pump host computer (1) includes air supply duct (6), return air duct (7), condenser (8) circulating fan (10) and heated warehouses (13), air supply duct (6) with return air duct (7) all with heated warehouses (13) are connected, stoving storehouse (2) with air supply duct (6) with return air duct (7) are connected, condenser (8) set up in heated warehouses (13), circulating fan (10) set up in air supply duct (6), heat pump host computer (1) still includes wind channel (5), wind channel (5) with return air duct (7) are connected, wind channel (5) department is equipped with wet exhaust valve (3), heated warehouses (13) department is equipped with fresh air valve (4).

2. The heat pump dryer according to claim 1, wherein: and the air inlet direction of the fresh air valve (4) faces to an air suction port of the circulating fan (10).

3. The heat pump dryer according to claim 2, wherein: the air inlet direction of the fresh air valve (4) and the air suction port of the circulating fan (10) are on the same straight line.

4. The heat pump dryer according to any one of claims 1 to 3, wherein: the heat pump host (1) is characterized by further comprising an evaporation cavity, an evaporator (9) is arranged in the evaporation cavity, and the evaporator (9) is used for carrying out heat exchange on gas exhausted through the air guide channel (5).

5. The heat pump dryer according to claim 4, wherein: the heat pump main unit (1) further comprises an outer fan (11), and the outer fan (11) is used for uniformly distributing gas on the evaporator (9).

6. The heat pump dryer according to claim 5, wherein: the fresh air valve (4) is connected with the evaporation cavity.

7. The heat pump dryer according to any one of claims 1, 5 and 6, wherein: the air supply duct (6) and the air return duct (7) are respectively connected to two ends of the heating bin (13).

8. The heat pump dryer according to claim 7, wherein: the air supply duct (6) and the air return duct (7) are respectively connected to the lower part and the upper part of the heating bin (13).

9. The heat pump dryer according to claim 1 or 8, wherein: the cross-sectional area of a connecting channel between the air return channel (7) and the heating bin (13) is larger than that of a connecting channel between the air return channel (7) and the air guide channel (5).

10. The heat pump dryer of claim 9, wherein: the air guide duct (5) is provided with a bend.