Sealed heat pump drying system

Abstract

The invention relates to the field of heat pump drying systems, in particular to a sealed heat pump drying system. The sealed heat pump drying system mainly comprises a heat pump main machine room (1) which is integrally arranged with a drying room (9) and a heating room (16), a main draught fan, an air valve (15), a pair of moisture discharging cylinders (7) and a pair of fresh air valves (5). The heat pump main machine room (1) is separated from the heating room (16) through a partition plate, and an automatic door (2) is arranged on the face opposite to the partition plate. The main draught fan (13) is arranged in a heating room (16). The pair of moisture discharging cylinders (7) is symmetrically arranged on the two sides of the top in the heating room (16) respectively. The fresh air valves (5) are arranged in the positions, opposite to the main draught fan (13), of the two side walls of the heating room (16) respectively. According to the sealed heat pump drying system, a heat pump unit is separated from the outside environment, waste heat exhausted by the drying room can be fully utilized, by the heat pump unit, and the heat loss of the system when the temperature of the outside environment is low is reduced; and the source of fresh air is selected by comparing the temperature of the heat pump main machine room and the temperature of the outside environment, energy consumption of preheating the fresh air is reduced, and the energy saving effect of the system is improved.

Description

technical field [0001] The invention relates to the field of heat pump drying systems, in particular to a closed heat pump drying system. Background technique [0002] At present, drying is the most developed application of heat pumps, especially for temperature-sensitive materials. This application is the main application of modern industrial heat pumps. With the growth of requirements for advanced dehumidification technology, heat pump drying has become more important in terms of product quality, energy saving, and environmental protection. [0003] Through the investigation of the research situation at home and abroad, it can be seen that the characteristics of high efficiency, energy saving and environmental protection of heat pumps have been proved by various production practices at home and abroad. Most of the current heat pump drying system hosts are directly exposed to the environment. When the ambient temperature is low, the waste heat discharged from the heating c...

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Problems solved by technology

Most of the current heat pump drying system hosts are directly exposed to the environment. When the ambient temperature is low, the waste heat discharged from the heating chamber cannot be effectively utilized, and most of the heat is directly lost in the environment. How to make good use of this part of waste heat to improve the heat pump unit Performance in low temperature environment is a working difficulty

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