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US 2015/0027680 A1Published application
Humidity controller
AssigneeDaikin Industries, Ltd.
InventorsAkihiro Eguchi, Gakuto Sakai
Life of this patent
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Abstract
An on-off valve and a bypass pipe which bypasses the on-off valve are connected to an inlet pipe and an outlet pipe of a humidity control circuit. A pressure-reducing valve is connected to the bypass pipe. Before switching a four-way valve, a degree of opening of the pressure-reducing valve is reduced to reduce a pressure difference between high and low pressure in the humidity control circuit. After that, the on-off valve is closed for pressure equalization between the high and low pressure in the humidity control circuit.
Claims3
A humidity controller, including:
- a heat-source-side circuit which has a compressor that compresses a refrigerant;
- and
- a humidity control circuit which has an adsorption heat exchanger carrying an adsorbent and a four-way valve that switches a flow direction of the refrigerant, and which is connected to the heat-source-side circuit by a connecting pipe, and
- the humidity controller being configured to alternately perform, by switching the four-way valve, an adsorption operation in which the adsorption heat exchanger serves as an evaporator and moisture in air is adsorbed to the adsorbent, and a regeneration operation in which the adsorption heat exchanger serves as a condenser and the moisture is desorbed from the adsorbent, the humidity controller comprising:
- a pressure difference reducing mechanism which reduces a pressure difference between a high pressure side and a low pressure side in the humidity control circuit before the four-way valve is switched.
2 more elements
Dependencies are inferred from the claim text.