Dehumidification device and dehumidification system

Patent metadata

Field	Value
Publication number	US-2016146479-A1
Application number	US-201414897098-A
Country	US
Kind code	A1
Filing date	Jun 24, 2014
Priority date	Jun 28, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

First and second adsorption heat exchangers are provided for first and second heat exchange chambers, respectively, and each interchangeably function as an evaporator or a condenser. If the first adsorption heat exchanger functions as an evaporator in the first heat exchange chamber, a first adsorption block is arranged at a position downstream of the first adsorption heat exchanger. If the second adsorption heat exchanger functions as an evaporator in the second heat exchange chamber, a second adsorption block is arranged at a position downstream of the second adsorption heat exchanger.

First claim

1 . A dehumidification device comprising:
a refrigerant circuit including first and second adsorption heat exchangers loaded with an adsorbent and performing alternately a first operation in which the first adsorption heat exchanger functions as an evaporator to dehumidify air and the second adsorption heat exchanger functions as a condenser to regenerate the adsorbent and a second operation in which the first adsorption heat exchanger functions as a condenser to regenerate the adsorbent and the second adsorption heat exchanger functions as an evaporator to dehumidify the air; first and second heat exchange chambers provided with the first and second adsorption heat exchangers, respectively; a switching mechanism configured to change airflow paths such that air that has passed through one of the first and second heat exchange chambers that is provided with the adsorption heat exchanger functioning as an evaporator is supplied to a humidity-controlled space and that air to regenerate the adsorbent flows through the other heat exchange chamber provided with the adsorption heat exchanger functioning as a condenser; a first adsorption block loaded with the adsorbent, configured to bring air into contact with the adsorbent, and arranged at a position downstream of the first adsorption heat exchanger if the first adsorption heat exchanger functions as an evaporator in the first heat exchange chamber; and a second adsorption block loaded with the adsorbent, configured to bring air into contact with the adsorbent, and arranged at a position downstream of the second adsorption heat exchanger if the second adsorption heat exchanger functions as an evaporator in the second heat exchange chamber.

2 . The dehumidification device of claim 1 , wherein
the switching mechanism changes the airflow paths such that the air passing through each of the first and second adsorption heat exchangers flows in an opposite direction when the adsorption heat exchanger functions as an evaporator from when the adsorption heat exchanger functions as a condenser.

3 . The dehumidification device of claim 1 , wherein
the switching mechanism changes the airflow paths such that the air passing through each of the first and second adsorption heat exchangers flows in the same direction when the adsorption heat exchanger functions as an evaporator as when the adsorption heat exchanger functions as a condenser.

4 . The dehumidification device of claim 1 , wherein
the first and second adsorption blocks are arranged so as to be spaced apart from the first and second adsorption heat exchangers, respectively.

5 . The dehumidification device of claim 1 , wherein
the first and second adsorption blocks are arranged so as to be in contact with the first and second adsorption heat exchangers, respectively.

6 . A dehumidification system comprising:
the dehumidification device of claim 2 ; and a heater configured to heat air to regenerate the adsorbent, wherein the switching mechanism changes airflow paths such that air that has passed through the heater flows in one of the first and second heat exchange chambers that is provided with the adsorption heat exchanger functioning as a condenser.

7 . The dehumidification system of claim 6 , further comprising
an adsorption rotor loaded with an adsorbent and including an adsorption portion and a regeneration portion, the adsorption portion dehumidifying air that has passed through one of the first and second heat exchange chambers that is provided with the adsorption heat exchanger functioning as an evaporator by bringing the air into contact with the adsorbent, the regeneration portion regenerating the adsorbent by bringing the air that has passed through the heater into contact with the adsorbent, wherein the air that has passed through that one of the first and second heat exchange chambers that is provided with the adsorption heat exchanger functioning as an evaporator is supplied to the humidity-controlled space through the adsorption portion of the adsorption rotor, and the switching mechanism changes the airflow paths such that air that has passed through the heater and the regeneration portion of the adsorption rotor in this order flows in the other one of the first and second heat exchange chambers that is provided with the adsorption heat exchanger functioning as a condenser.

8 . The dehumidification device of claim 2 , wherein
the first and second adsorption blocks are arranged so as to be spaced apart from the first and second adsorption heat exchangers, respectively.

9 . The dehumidification device of claim 3 , wherein
the first and second adsorption blocks are arranged so as to be spaced apart from the first and second adsorption heat exchangers, respectively.

10 . The dehumidification device of claim 2 , wherein
the first and second adsorption blocks are arranged so as to be in contact with the first and second adsorption heat exchangers, respectively.

11 . The dehumidification device of claim 3 , wherein
the first and second adsorption blocks are arranged so as to be in contact with the first and second adsorption heat exchangers, respectively.

Assignees

• Daikin Applied Systems Co Ltd
• Daikin Ind Ltd

Inventors

• Fujita Naotoshi
• Natsume Toshiyuki
• Nakayama Hiroshi
• Matsui Nobuki

Classifications

• F24F2003/1458

  using regenerators · CPC title

• F24F3/1423

  with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants · CPC title

• F24F3/1429

  alternatively operating a heat exchanger in an absorbing/adsorbing mode and a heat exchanger in a regeneration mode · CPC title

• F24F3/1411 Primary

  by absorbing or adsorbing water, e.g. using an hygroscopic desiccant · CPC title

• F24F2003/144

  by dehumidification only · CPC title