High-temperature heat pump drying machine started with heating and operating in high heating load state

Abstract

The invention provides a high-temperature heat pump drying machine started with heating and operating in a high heating load state. The machine comprises a heat pump drying system, a wind inlet passage, a wind outlet passage, and a drying chamber for connecting the wind inlet passage with the wind outlet passage; the heat pump drying system comprises a condenser arranged in the wind inlet passage, and an evaporator arranged in the wind outlet passage; a heater is arranged between the condenser and the drying chamber; air enters from a wind inlet of the wind inlet passage, and becomes high-temperature dried air after passing through the condenser and the heater in sequence, and then the high-temperature dried air is conveyed into the drying chamber and is used for drying operation and turned into humid air; the humid air is discharged and is guided onto the evaporator, and after moisture in the humid air is condensed, the air is discharged through the wind outlet passage. The heater is additionally arranged for increasing the drying operation starting speed of the drying system and the temperature of the dried air and improving the heat and mass transfer intensity of the drying operation, so that the heat absorption intensity of the evaporator is improved; moreover, the heat absorption intensity of the evaporator is improved, so that the heat release intensity of the condenser is improved, and the heat pump drying system can enter a high heating load operation state.

Description

technical field

[0001] The invention relates to the technical field of drying device design, in particular to a high-temperature heat pump dryer that is activated by heating and operates under a heavy heat load. Background technique

[0002] Heat pump, as a heat transfer tool, as a device to improve the low-grade heat quality of soil, air, and water to obtain higher-grade heat, under the background of energy saving and emission reduction, in the fields of heating, hot water, drying, etc. , has gained more and more widespread application. The essence of heat pump energy saving is to inject a small amount of electric energy to drive the compressor. Through the suction and exhaust operation of the compressor, the low-pressure refrigerant gas that absorbs a large amount of low-grade heat in the evaporator is compressed into high-pressure gas and enters the condenser to achieve high temperature. Bit exothermic.

[0003] Usually, the ratio of the heat output power of the heat pu...

Examples

Embodiment Construction

[0051] The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In these drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

[0052] The invention provides a high-temperature heat pump dryer that is started by heating and operates under a heavy heat load. The production method can be intermittent, that is, the drying objects are put into high-temperature drying air "one cage by one" for drying and dehumidification; the drying medium is Air or nitrogen and other gaseous substances with high hygroscopicity at high temperature are not limited here. ...

technical field

[0001] The invention relates to the technical field of drying device design, in particular to a high-temperature heat pump dryer that is activated by heating and operates under a heavy heat load. Background technique

[0002] Heat pump, as a heat transfer tool, as a device to improve the low-grade heat quality of soil, air, and water to obtain higher-grade heat, under the background of energy saving and emission reduction, in the fields of heating, hot water, drying, etc. , has gained more and more widespread application. The essence of heat pump energy saving is to inject a small amount of electric energy to drive the compressor. Through the suction and exhaust operation of the compressor, the low-pressure refrigerant gas that absorbs a large amount of low-grade heat in the evaporator is compressed into high-pressure gas and enters the condenser to achieve high temperature. Bit exothermic.

[0003] Usually, the ratio of the heat output power of the heat pu...

Examples

Embodiment Construction

[0051] The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In these drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

[0052] The invention provides a high-temperature heat pump dryer that is started by heating and operates under a heavy heat load. The production method can be intermittent, that is, the drying objects are put into high-temperature drying air "one cage by one" for drying and dehumidification; the drying medium is Air or nitrogen and other gaseous substances with high hygroscopicity at high temperature are not limited here. ...

Images