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Vacuum freeze-drying equipment afterheat recycling system and method

A technology of vacuum freeze-drying and waste heat recovery, which is applied in the direction of heating devices, applications, and other non-combustion heat generation, which can solve the problems of heat loss and insufficient use of heat, so as to reduce electricity consumption and increase energy efficiency ratio , Good effect of running economy

Active Publication Date: 2013-02-13
济南大陆机电股份有限公司
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Problems solved by technology

For the vacuum freeze-drying equipment as a whole, a large amount of heat is lost to the atmosphere while supplying heat, and the heat cannot be fully and reasonably utilized.

Method used

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  • Vacuum freeze-drying equipment afterheat recycling system and method

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Embodiment Construction

[0043] The refrigeration system (refrigeration system may include cold trap and cold storage) salt sink 2, absorb the heat dissipation of the refrigeration system condenser.

[0044] The first thermal pump 4 passed from the salt sink 2 (low temperature heat source) to the middle container 5 (high temperature heat source). A specific structure is: the water supply of the first heat pump evaporator is from the saline tank.In the salt tank, the water supply of the cold flow of the first heat pump condenser comes from the intermediate container.

[0045]The second heat pump 6 transmitted from the intermediate container 5 (low temperature heat source) to the heating plate to the heating plate, and the number of the second heat pump 6 is matched according to the different temperatures required for different drying periods of the production line. The multiple production lines should be staggered.Drying periods are carried out, and the second heat pump 6 is arranged in parallel to provide...

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Abstract

The invention provides a vacuum freeze-drying equipment afterheat recycling system capable of recycling heat dissipated by a refrigerating system condenser. The vacuum freeze-drying equipment afterheat recycling system comprises the refrigerating system condenser, a heating saline groove working medium, a first heat pump, second heat pumps and an intermediate container, wherein an evaporator of the first heat pump exchanges heat with the working medium in the saline groove; a condenser of the first heat pump exchanges heat with the working medium in the intermediate container; an evaporator of each second heat pump exchanges heat with the working medium in the intermediate container; an condenser of each second heat pump is used for heating hot water required by a heating plate; the intermediate container is provided with an auxiliary heating device; the number of the second heat pumps is determined according to different temperature required at different drying time in the production line; and the second heat pumps are arranged in parallel. The invention further provides a vacuum freeze-drying equipment afterheat recycling method for recycling heat dissipated by the refrigerating system condenser. The method comprises the following steps of: dissipating heat to saline in the saline groove by using the refrigerating system condenser; taking heat from the saline groove by using the first heat pump and heating the working medium in the intermediate container; taking heat from the intermediate container by using the second heat pump and heating hot water required by the heating plate; and auxiliarily heating the intermediate container by using the auxiliary heating device.

Description

Technical field [0001] The present invention involves a vacuum freezer -drying device, which specifically involves a vacuum -frozen drying device refrigerator refrigerator cooling recovery device, and also involves a method of waste heat recovery based on the above residual heat recovery device. Background technique [0002] Vacuum frozen and drying is to freeze the food to turn the water contained in ice cubes, and then the ice is sublimated in the vacuum to achieve the purpose of drying.To maintain the continuous progress of the sublimation and dryness, two basic conditions must be met, that is, the continuous supply of heat and the continuous exclusion of the generation of steam.The existing vacuum frozen drying equipment is basically radiating heating method, which is radiated by heating plate radiation to provide heat. Heating the heating plate with hot water is produced by steam-water-water heat or electric heating.The process of supplying heat is a process of heat transfer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L3/44F24J3/00
CPCY02P60/85
Inventor 荆书典李守顺
Owner 济南大陆机电股份有限公司
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