Closed-loop double-evaporator drying heat pump and volatile oil recovery method

A technology of double evaporators and evaporators, which is applied in drying, drying machines, drying solid materials, etc., can solve the problems that cannot satisfy the liquefaction and recovery of volatile oil, it is difficult to ensure continuous heating and dehumidification, closed-loop drying, etc., and achieve rapid heating and temperature Humidity control, guaranteed operating performance, and improved heating rate
CN108375283APending Publication Date: 2018-08-07CHUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHUZHOU UNIV
Publication Date
2018-08-07

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Abstract

The invention discloses a closed-loop double-evaporator drying heat pump. The double-evaporator drying heat pump consists of a fluoride system and a dryer frame, wherein the dryer frame forms a closeddrying chamber and indoor medium circulating channel by partition boards; a main evaporator and a second evaporator are connected in parallel to form a low-pressure area of the fluoride system; the main evaporator is installed outside the drying chamber, and the second evaporator and a condenser are installed in the drying chamber; an outlet of a compressor is connected to the condenser by a four-way reversing valve, the condenser is provided with two parallel branches after passing through a throttling device, one branch is connected with the second evaporator, and the other branch is connected with the main evaporator; and the main evaporator and the second evaporator are connected with a gas-liquid separator and the compressor in sequence by the four-way reversing valve. The closed-loop double-evaporator drying heat pump provided by the invention is a drying system which can carry out dehumidification without changing a running mode or a heating mode, has the characteristics of rapid heating, controllable humidity in the drying chamber, energy saving, efficient dehumidification, etc., and is applied to drying of Chuzhou chrysanthemum and mushroom and recovery of volatile oil ofthe Chuzhou chrysanthemum at present.
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Description

technical field

[0001] The invention belongs to the technical field of refrigeration, drying and dehumidification, and relates to a heat pump drying equipment and a method for recovering volatile oil, in particular to a double evaporator drying equipment with closed cycle liquefaction and dehumidification technology, which is especially suitable for dehumidification and drying of food and characteristic agricultural products And volatile oil liquefaction recovery. Background technique

[0002] The closed-loop double evaporator drying heat pump is composed of a fluorine system and a dryer frame to form an integrated machine. The main and secondary evaporators of the heat pump are connected in parallel to form the low-pressure area of ​​the fluorine system, which expands the capacity of the low-pressure area so that the secondary evaporator can obtain a lower temperature. The main evaporator acts as the main heat-absorbing heat exchanger to absorb the heat in the environment; ...

Claims

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