CN206146112U - A solar heat pump drying system suitable for humid environment - Google Patents

Abstract

The utility model discloses a solar heat pump drying system suitable for a humid environment, comprising a drying room, a heat pump heating unit installed on one side of the drying room, a solar heating system installed on the other side of the drying room, and a fresh air inlet pipe connected to the drying room. The drying room is provided with an exhaust port. The heat pump heating unit comprises a compressor, a condenser and an evaporator connected in sequence to the circulation pipeline of the compressor. The compressor and the condenser are connected to form a high-pressure side, and the compressor and the evaporator are connected to form a low-pressure side. The condenser is arranged in the drying room, and also comprises a fresh air valve connected to the fresh air inlet pipe. The evaporator air outlet is connected to the fresh air inlet pipe air inlet. The heat pump heating unit is combined with the solar heating system, and the heat pump evaporator is used to reduce the moisture content of the fresh air inlet, so that a high humidity difference is easily formed with the dried material in the drying room, and the dehumidification efficiency is high, which can save energy. It is particularly suitable for dehumidification drying in a humid environment with solar energy.

Description

A solar heat pump drying system suitable for humid environment

technical field

The utility model relates to a heat pump drying system, more specifically, a dehumidification type drying in a humid environment, which adopts a combination of a solar heating system and a heat pump heating unit, and uses the heat pump to dehumidify and reduce the moisture content of the incoming fresh air. At the same time, it cooperates with solar heating system and heat pump heating to effectively improve drying efficiency and energy-saving drying system.

Background technique

At present, the recognized heat pump dryer is to place the evaporator outside the drying room, and place the condenser inside the drying room. The evaporator is used to absorb the heat energy in the outside air and transfer the heat energy to the condenser. The heat energy in the drying room increases the temperature of the dried items, and then evaporates the water in the dried items, forming high-temperature, high-humidity air in the drying room; and then eliminates a certain amount of high-temperature, high-humidity air in the drying room Air, thereby reducing the moisture content of the items to be dried, in order to achieve the purpose of drying.

However, the traditional dehumidification type drying is to discharge high-temperature and high-humidity air from the drying room through a dehumidification fan, and then inhale air from the environment for heating. Since the humidity of the ambient air decreases after the temperature rises, it is easy to form a humidity difference with the material to be dried. It is the driving force for dehumidification and drying. Generally speaking, the greater the humidity difference between the material to be dried and the air in the drying room, the faster the drying speed of the material and the higher the drying efficiency.

There are disadvantages in the traditional dehumidification type drying: high humidity in the ambient air will prolong the drying time and reduce the dehumidification efficiency. Even if there is solar energy, the environment is too humid. After the air sucked into the drying room heats up, the humidity difference with the material to be dried becomes smaller, the drying power becomes less, and the material to be dried is difficult to dry. This is why the drying of clothes or agricultural products in villages in water towns is much slower than in desert areas: in the case of solar energy, the environment in desert areas is dry, while the environment in water towns is too humid.

Utility model content

The purpose of this utility model is to overcome the above-mentioned defects in the prior art, and provide a new air inhaled during dehumidification is the air dehumidified from the evaporator, and the moisture content per unit volume of the new air is much lower than that of the ambient air. The temperature is similar to the environment, and the solar heating system is combined with the heat pump heating unit to reduce the moisture content of the air in the drying room and the moisture content of the incoming fresh air. The humidity is poor, the dehumidification efficiency is high, and the solar heat pump drying system suitable for humid environment can save energy.

In order to achieve the above object, the technical scheme provided by the utility model is as follows:

A solar heat pump drying system suitable for humid environments is provided, including a drying room, a heat pump heating unit installed on one side of the drying room, a solar heating system installed on the other side of the drying room, and a Into the fresh air pipe, the drying room is provided with an air outlet, and the heat pump heating unit includes a compressor, a condenser and an evaporator connected to the circulation pipeline of the compressor in turn, and a condenser and an evaporator connected to the A throttling valve between the evaporators, the compressor is connected to the condenser to form a high-pressure side, and the compressor is connected to the evaporator to form a low-pressure side. The condenser is arranged in the drying room and also includes a The fresh air valve on the fresh air pipe, the air outlet of the evaporator communicates with the air inlet of the fresh air pipe.

As a preference, in the above technical solution, a moisture exhaust fan is installed at the air outlet.

As a preference, in the above technical solution, the lower part of the evaporator has a condensed water discharge pipe.

As preferably, in the above technical solution, the solar heating system includes a solar collector, a first circulating air duct and a second circulating air duct connected with the drying room, and the first circulating air duct is connected to the solar collector. The air inlet of the heater is connected, and the second circulating air pipe is connected with the air outlet of the solar heat collector.

Compared with the prior art, the utility model has the beneficial effects that: the utility model forms the high-pressure side by connecting the compressor with the condenser, the compressor and the evaporator form the low-pressure side, and the condenser is arranged at In the drying room, the fresh air valve on the fresh air inlet pipe, the air outlet of the evaporator is connected with the air inlet of the fresh air pipe, and the new air inhaled during dehumidification is the air dehumidified from the evaporator. The moisture content per unit volume is much lower than that of the ambient air, and the temperature is similar to that of the environment. The combination of heat pump heating unit and solar heating system is used to reduce the moisture content of the air in the drying room and the moisture content of the fresh air. , in the drying room, it is easy to form a high humidity difference with the material to be baked, and the dehumidification efficiency is high, which can save energy. Especially suitable for dehumidification drying in humid environment.

A solar heat pump drying system suitable for humid environments described in the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a schematic diagram of an assembly structure of a solar heat pump drying system suitable for a humid environment according to the present invention.

detailed description

The following is the best example of a solar heat pump drying system suitable for humid environment described in the utility model, which does not limit the protection scope of the utility model.

Please refer to Figure 1, which shows a solar heat pump drying system suitable for humid environments, including a drying room 1, a heat pump heating unit 2 installed on one side of the drying room 1, and a heat pump heating unit 2 installed on the other side of the drying room 1. The solar heating system 8 on the side, the fresh air duct 3 connected with the drying room 1, the drying room 1 is provided with an air outlet 11, and the heat pump heating unit 2 includes a compressor 22, which is sequentially connected to the compressor The condenser 23 and the evaporator 21 on the circulation line of the machine 22, and the throttle valve 24 connected between the condenser 23 and the evaporator 21, the compressor 22 is connected with the condenser 23 to form a high-pressure side, so The compressor 22 is connected with the evaporator 21 to form a low-pressure side. The condenser 23 is arranged in the drying room 1 and also includes a fresh air valve 4 connected to the fresh air pipe 3. The air outlet of the evaporator 21 is connected to the The 3 air inlets of the fresh air duct are connected. When dehumidifying, open the fresh air valve 4, and inhale the air dehumidified by the evaporator 21 from the air inlet of the fresh air pipe 3, which is 0.1-0.5 meters away from the air outlet of the evaporator 21. The moisture content per unit volume of the new air is much lower than that of the ambient air, and the temperature is similar to that of the environment. The heat pump heating unit is combined with the solar heating system to reduce the moisture content of the air in the drying room. In the drying room, it is easy to form a relatively high humidity difference with the materials to be dried, which is conducive to the diffusion of humid air in the materials to be dried, improving drying efficiency, saving drying time, and saving energy; especially Moisture removal drying for humid environments.

As preferably, in this implementation, a dehumidification blower 5 is installed at the air outlet 11, and a certain amount of high-temperature and high-humidity air in the drying room 1 is eliminated through the dehumidification blower 5, thereby reducing the temperature of the dried items. moisture to achieve the purpose of drying.

Preferably, in this implementation, there is a condensed water discharge pipe 6 at the lower part of the evaporator 21 , and the condensed water generated by the evaporator 21 is discharged through the condensed water discharged pipe 6 .

As a preference, in this implementation, the solar heating system 8 includes a solar heat collector 81, a first circulating air duct 82 and a second circulating air duct 83 communicating with the drying room 1, and the first circulating air duct The pipe 82 is connected with the air inlet of the solar heat collector 81, and the second circulating air pipe 83 is connected with the air outlet of the solar heat collector 81, utilizing the synergistic effect of the solar heating system and the dehumidification of the evaporator, the incoming fresh air The low moisture content is conducive to improving the efficiency of solar energy utilization and the overall utilization efficiency of heat sources.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (5)

1. A solar heat pump drying system suitable for humid environments, characterized in that: comprising a drying room (1), a heat pump heating unit (2) installed on one side of the drying room (1), installed in the drying room ( 1) The solar heating system (8) on the other side, the fresh air duct (3) connected with the drying room (1), the drying room (1) is provided with an air outlet (11), the The heat pump heating unit (2) includes a compressor (22), a condenser (23) and an evaporator (21) connected in turn on the circulation pipeline of the compressor (22), and a condenser (23) and an evaporator (21) connected to the A throttle valve (24) between the evaporators (21), the compressor (22) is connected to the condenser (23) to form a high-pressure side, and the compressor (22) is connected to the evaporator (21) to form a low-pressure side , the condenser (23) is located in the drying room (1), and also includes a fresh air valve (4) connected to the fresh air inlet pipe (3), and the air outlet of the evaporator (21) is connected to the fresh air inlet The air inlets of the air duct (3) are connected. 2. A solar heat pump drying system suitable for humid environments according to claim 1, characterized in that: a dehumidification blower (5) is installed at the air outlet (11). 3. A solar heat pump drying system suitable for humid environments according to claim 1, characterized in that: the evaporator (21) has a condensed water discharge pipe (6) at the lower part. 4. A solar heat pump drying system suitable for humid environments according to claim 1, characterized in that: the distance between the air inlet of the fresh air duct (3) and the air outlet of the evaporator (21) is 0.1-0.5 Meter. 5. A solar heat pump drying system suitable for humid environments according to claim 1, characterized in that: the solar heating system (8) includes a solar collector (81) connected to the drying room (1) The first circulating air pipe (82) and the second circulating air pipe (83) connected, the first circulating air pipe (82) is connected with the air inlet of the solar collector (81), and the second circulating air The pipe (83) is connected with the air outlet of the solar heat collector (81), and the first circulating air pipe (82) is equipped with a circulating fan (84).