CN204154088U - A kind of totally-enclosed heat pump drying dehumidifying integrated machine - Google Patents

Abstract

The utility model discloses a fully enclosed heat pump drying and dehumidifying integrated machine, which comprises a dryer frame, an axial flow fan, a compressor, a condenser, an inner evaporator and an outer evaporator, and the overall airtightness of the dryer frame is characterized in that In the middle, there is an isolation environment, and an air circulation channel is formed inside, and the inner evaporator and condenser are respectively arranged on the air circulation channels on both sides of the partition wall; a heat pipe heat exchanger is also included, and the upper half of the heat pipe heat exchanger is arranged inside for evaporation The position of the air inlet of the condenser, the air in the fully enclosed heat pump dryer passes through the upper half of the heat pipe heat exchanger and then passes through the internal evaporator, the lower half of the heat pipe heat exchanger is set at the air inlet of the condenser, and the air in the fully enclosed heat pump dryer After passing through the lower half of the heat pipe heat exchanger, it passes through the condenser. Since the fully enclosed heat pump drying and dehumidifying machine adopts closed cycle drying, and the unique design of heat pipe heat exchanger is added, the heat of hot and humid air can be completely recovered during operation, and the energy saving effect is better.

Description

A fully enclosed heat pump drying and dehumidification machine

technical field

The utility model relates to an air source heat pump dryer, more specifically, the utility model relates to a new fully enclosed air source heat pump drying and dehumidifying integrated machine.

Background technique

The air source heat pump dryer is a new type of drying equipment. It uses the reverse Carnot cycle theory to absorb the energy in the air through a large-area heat-absorbing device. The refrigerant is used as the medium, and the refrigerant is absorbed in the evaporator. The energy in the air, after being compressed and heated by the compressor, converts the low-grade air energy into high-grade heat energy, and transfers the heat to the air in the drying room through the heat exchange device to achieve the purpose of heating the air. The air is continuously circulated in the drying room through the circulating fan system to absorb the moisture in the dried objects. The air source heat pump dryer is a drying device that can replace traditional heat sources such as boilers and electric heating. It is gradually accepted by users due to its advantages of less energy consumption, less environmental pollution, high drying quality, and wide application range.

Generally, the traditional air source heat pump dryer is a split structure, which is divided into two parts: an indoor unit and an outdoor unit. In the actual application process, the installation of the whole machine is more complicated, and the requirements for the internal structure design and installation position of the drying room are relatively strict. The dehumidification process is to directly discharge the hot and humid air outside and supply fresh air. In this way, the heat loss of dehumidification is very large, and the quality of the fresh air supplied cannot be controlled.

Utility model content

The technical problem to be solved by the utility model is how to simplify the installation complexity of the heat pump dryer and reduce the dehumidification energy consumption of the heat pump dryer.

In order to solve the above technical problems, the utility model designs a fully enclosed heat pump drying and dehumidification machine, including a dryer frame, an axial fan, a compressor, a condenser, an inner evaporator and an outer evaporator, and the dryer frame The overall airtightness is characterized in that a partition wall is provided in the middle, and an air circulation channel is formed inside around the partition wall, and the inner evaporator and the condenser are respectively arranged on the air circulation channels on both sides of the partition wall; It also includes a heat pipe heat exchanger. The upper half of the heat pipe heat exchanger is set at the air inlet of the inner evaporator. The air in the fully enclosed heat pump dryer passes through the upper half of the heat pipe heat exchanger and then passes through the inner evaporator. The lower half of the condenser is set at the air inlet of the condenser, and the air in the fully enclosed heat pump dryer passes through the lower half of the heat pipe heat exchanger and then passes through the condenser.

The fully enclosed heat pump drying and dehumidifying integrated machine is characterized in that it also includes a bypass air volume regulating valve, the bypass air volume regulating valve is arranged in the air circulation channel, and the air circulation can be controlled by adjusting the opening degree of the bypass air volume regulating valve The flow of air on the channel.

The implementation of the utility model has the following beneficial effects: the overall installation is simpler and more convenient than the split installation, and at the same time, the closed cycle drying is adopted, and the unique design of the heat pipe heat exchanger is added, and the hot and humid air can be completely recovered during operation. The heat and energy saving effect is better, and because it is closed, it is not affected by the external climate conditions, which greatly broadens the scope of application.

Description of drawings

Figure 1 is a schematic diagram of a split heat pump dryer;

Figure 2 is a schematic structural diagram of a fully enclosed heat pump drying and dehumidifying machine.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Figure 1 is a schematic diagram of a split heat pump dryer. The traditional air source heat pump dryer adopts a split structure and consists of an outdoor unit 1, an indoor unit 2 and a connecting pipe 3. In the actual application process, the installation of the whole machine is more complicated, and the requirements for the internal structure design and installation position of the drying room are relatively strict. The dehumidification process is to directly discharge the hot and humid air outside and supply fresh air. In this way, the heat loss of dehumidification is very large, and the quality of the fresh air supplied cannot be controlled.

Figure 2 is a schematic structural diagram of a fully enclosed heat pump drying and dehumidifying machine. The fully enclosed heat pump drying and dehumidification integrated machine includes a dryer frame, an axial fan 4, a compressor 6, a condenser 10, an inner evaporator 16, and an outer evaporator 5. Closed equipment area and drying area, the outer evaporator 5 and compressor 6 are arranged in the equipment area, the inner evaporator 16 and the condenser 10 are arranged in the drying area, and the condenser 10 is respectively connected to the A electromagnetic The valve 13 is connected to the B solenoid valve 14, the A solenoid valve 13 is connected to the outer evaporator 5, the B solenoid valve 11 is connected to the inner evaporator 12, the outer evaporator 5 is connected to the inner evaporator 12 and the compressor 6, The compressor 6 communicates with the condenser 7 , and the compressor 6 communicates with the connecting pipeline between the electromagnetic two-way valve 13 and the A solenoid valve 10 and the outer evaporator 5 .

Heating stage: control to open the A solenoid valve 13, and close the B solenoid valve 14 and the solenoid two-way valve 18. The low-temperature liquid refrigerant absorbs air energy through the outer evaporator 5, and evaporates the refrigerant liquid in the outer evaporator 5 into a low-temperature and low-pressure refrigerant gas, and the evaporated gas refrigerant flows into the compressor 6, and is compressed by the compressor 6 to become High-pressure and high-temperature refrigerant gas, high-pressure and high-temperature refrigerant gas flows into the condenser 10, and exchanges heat with the air inside the drying area in the condenser 10 to achieve the purpose of heating the internal air. The condensed refrigerant liquid passes through the throttling device 9 It flows to the outer evaporator 5 and works in a cycle to continuously increase the temperature of the air in the drying room, thereby achieving the purpose of increasing the temperature of the air in the drying room.

The air in the drying room and the items to be dried in the drying room are heated through the heating stage, and the high-temperature air in the drying room completes the humidity exchange with the items to be dried, turning the high-temperature gas into a high-temperature and high-humidity gas.

Dehumidification stage: control to open the B solenoid valve 14, and close the A solenoid valve 13 and the solenoid two-way valve 18. Compared with the heating stage, the operation of this system is equivalent to changing an evaporator, the original outer evaporator 5 is replaced by the inner evaporator 16, and other conditions remain unchanged. The low-temperature liquid refrigerant passes through the inner evaporator 16, and the inner evaporator 16 realizes the evaporation of the low-temperature liquid refrigerant by absorbing the heat of the high-temperature and high-humidity gas in the drying room, and the high-temperature and high-humidity air in the entire drying room evaporates through the low-temperature inner side The cooler 16 lowers the temperature and dehumidifies, removes the water vapor in the air, and then passes through the high-temperature condenser 10 to increase the temperature and enter the drying room, so that the continuous cycle works to dehumidify.

The system also adds a heat pipe heat exchanger 15 and a bypass air volume regulating valve 12 . The temperature of the high-temperature and high-humidity air entering the inner evaporator 16 is lowered by the heat pipe heat exchanger 15 , while the temperature of the air entering the condenser 10 is raised. The main purpose is to reduce the temperature of the high-temperature and high-humidity air entering the inner evaporator 16 through the heat pipe heat exchanger 15 without energy consumption to improve the dehumidification performance of the unit. At the same time, the opening degree of the bypass air flow regulating valve 12 can be automatically adjusted by sensing the humidity of the air entering and leaving the inner evaporator 16 to reduce or increase the flow rate of high-temperature and high-humidity air passing through the inner evaporator 16 . If the humidity difference of the air entering and exiting the inner evaporator 16 is too small, the opening degree of the bypass air volume regulating valve 12 is increased to reduce the flow rate of high-temperature and high-humidity air passing through the inner evaporator 16, thereby increasing the dehumidification capacity of the unit.

Dehumidification stage: A solenoid valve 13 is opened, B solenoid valve 14 and solenoid two-way valve 18 are closed. The whole system absorbs air energy through the outer evaporator 5, evaporates the refrigerant liquid in the outer evaporator 5, and releases heat after the evaporated gas is compressed by the compressor 6, and exchanges the heat with the air inside the room in the condenser 10, and the condensed Refrigerant liquid flows to the outer evaporator 5 through the throttling device 9, and circulates to continuously increase the temperature of the air in the drying room. At the same time, the humidity exhaust fan 17 is turned on to discharge the high-temperature and high-humidity air while replenishing fresh air from the external environment. , to achieve the effect of dehumidification through the humidity difference between the exhausted and replenished air.

What is disclosed above is only one embodiment of the present utility model, which certainly cannot limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand all or part of the process of realizing the above-mentioned embodiments, and according to the utility model The equivalent changes made by the claims still belong to the scope covered by the utility model.

Claims (2)

1. a totally-enclosed heat pump drying dehumidifying integrated machine, comprise dryer framework, axial flow blower, compressor, condenser, inner side evaporimeter and outside evaporimeter, dryer framework Integral sealing, it is characterized in that being provided with divider wall in centre, around described divider wall, inner formation air circulation duct, described inner side evaporimeter and described condenser are separately positioned in the air circulation duct on the two sides of described divider wall; Also comprise heat exchange of heat pipe, the upper of described heat exchange of heat pipe is arranged on interior evaporimeter air intake vent position, in totally-enclosed heat pump dryer, air passes through interior evaporimeter after the upper of heat exchange of heat pipe, lower one side of something of heat exchange of heat pipe is arranged on condenser air intake vent position, and in totally-enclosed heat pump dryer, air passes through condenser after lower one side of something of heat exchange of heat pipe.

2. totally-enclosed heat pump drying dehumidifying integrated machine according to claim 1, characterized by further comprising bypass volume damper, described bypass volume damper is arranged on air circulation duct, and the aperture by adjustment bypass volume damper controls the flow of air in air circulation duct.