JP2013130381A - Humidity control device - Google Patents

Humidity control device Download PDF

Info

Publication number
JP2013130381A
JP2013130381A JP2011282177A JP2011282177A JP2013130381A JP 2013130381 A JP2013130381 A JP 2013130381A JP 2011282177 A JP2011282177 A JP 2011282177A JP 2011282177 A JP2011282177 A JP 2011282177A JP 2013130381 A JP2013130381 A JP 2013130381A
Authority
JP
Japan
Prior art keywords
liquid absorbent
moisture
path
absorbent
moisture absorption
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2011282177A
Other languages
Japanese (ja)
Other versions
JP5862280B2 (en
Inventor
Naotoshi Fujita
尚利 藤田
Shuji Ikegami
周司 池上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP2011282177A priority Critical patent/JP5862280B2/en
Publication of JP2013130381A publication Critical patent/JP2013130381A/en
Application granted granted Critical
Publication of JP5862280B2 publication Critical patent/JP5862280B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Central Air Conditioning (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a humidity control device that controls humidity in air with the use of a liquid absorbent.SOLUTION: An operation control part 103 switches a first operation of controlling humidity in air by each of a liquid absorbent in a moisture absorbing passage (41a, 41b) and a liquid absorbent in a moisture desorbing passage (41b, 41a) without exchanging the liquid absorbent in the moisture absorbing passage and in the moisture desorbing passage with each other, and a second operation of exchanging the liquid absorbent in the moisture absorbing passage and in the moisture desorbing passage with each other. During the second operation, the liquid absorbent flowing from the moisture desorbing passage to the moisture absorbing passage and the liquid absorbent flowing from the moisture absorbing passage to the moisture desorbing passage exchange heat with each other in a heat exchanger 90.

Description

本発明は、液体吸収剤を用いて空気を調湿する調湿装置に関するものである。   The present invention relates to a humidity control apparatus that adjusts the humidity of air using a liquid absorbent.

従来より、塩化リチウム水溶液等の液体吸収剤と、液体吸収剤は透過させずに水蒸気だけを透過させる透湿膜とを備えた調湿装置が知られている。例えば、特許文献1には、除湿運転と加湿運転とが切換可能な調湿装置が開示されている(特許文献1の例えば段落〔0031〕〜〔0033〕、図8を参照)。この調湿装置は、液体吸収剤が循環する吸収剤回路と、冷媒が循環して冷凍サイクルを行う冷媒回路とを備えている。   Conventionally, a humidity control apparatus including a liquid absorbent such as an aqueous lithium chloride solution and a moisture permeable membrane that allows only water vapor to permeate without allowing the liquid absorbent to permeate is known. For example, Patent Document 1 discloses a humidity control apparatus that can switch between a dehumidifying operation and a humidifying operation (see, for example, paragraphs [0031] to [0033] and FIG. 8 of Patent Document 1). The humidity control apparatus includes an absorbent circuit in which a liquid absorbent circulates and a refrigerant circuit in which a refrigerant circulates to perform a refrigeration cycle.

吸収剤回路には、吸湿部と放湿部とが接続されている。吸湿部では、室内へ供給される空気が流れる空気通路と液体吸収剤が流れる液体通路とが透湿膜によって仕切られている。一方、放湿部では、室外へ排出される空気が流れる空気通路と液体吸収剤が流れる液体通路とが透湿膜によって仕切られている。また、吸収剤回路には、吸湿部から放湿部へ向かう通路に冷媒回路の凝縮部(放熱部)が接続され、放湿部から吸湿部へ向かう通路に冷媒回路の蒸発部が接続されている。凝縮部は、冷媒から放熱して液体吸収剤を加熱する加熱部を構成し、蒸発部は、冷媒が吸熱して液体吸収剤を冷却する冷却部を構成する。   A moisture absorption part and a moisture release part are connected to the absorbent circuit. In the moisture absorption part, an air passage through which air supplied to the room flows and a liquid passage through which the liquid absorbent flows are partitioned by a moisture permeable membrane. On the other hand, in the moisture release section, an air passage through which air discharged to the outside flows and a liquid passage through which the liquid absorbent flows are partitioned by a moisture permeable film. In addition, a condensing part (heat dissipating part) of the refrigerant circuit is connected to a path from the moisture absorbing part to the moisture releasing part, and an evaporator part of the refrigerant circuit is connected to a path from the moisture releasing part to the moisture absorbing part. Yes. The condensing unit constitutes a heating unit that releases heat from the refrigerant and heats the liquid absorbent, and the evaporation unit constitutes a cooling unit that absorbs heat from the refrigerant and cools the liquid absorbent.

この調湿装置では、蒸発部で冷却された液体吸収剤が吸湿部へ流入する。吸湿部では、空気の水分が液体吸収剤に吸収され、この空気が除湿される。除湿された空気は、室内へ供給される。吸湿部で水分を吸収した液体吸収剤は、凝縮部で加熱された後に放湿部へ流入する。放湿部では、液体吸収剤の水分が空気へ放出される。水分が放出された空気は、室外へ放出される。放湿部で水分を放出した液体吸収剤は、再び蒸発部で冷却された後に吸湿部へ流入する。このように、吸収剤回路内を液体吸収剤が循環することにより、室内の調湿が連続的に行われる。   In this humidity control apparatus, the liquid absorbent cooled by the evaporation unit flows into the moisture absorption unit. In the moisture absorption part, moisture in the air is absorbed by the liquid absorbent, and the air is dehumidified. The dehumidified air is supplied into the room. The liquid absorbent that has absorbed moisture in the moisture absorption part flows into the moisture release part after being heated in the condensation part. In the moisture releasing part, the moisture of the liquid absorbent is released into the air. The air from which moisture has been released is released to the outside. The liquid absorbent from which moisture has been released in the moisture release section is cooled again in the evaporation section and then flows into the moisture absorption section. In this way, the liquid absorbent circulates in the absorbent circuit, so that the humidity in the room is continuously performed.

特開平05−146627号公報JP 05-146627 A

しかしながら、特許文献1に記載の調湿装置では、吸収剤回路において、放湿部の流入側で加熱した液体吸収剤を吸湿部の流入側で冷却する、というように、吸収剤回路を循環する液体吸収剤の加熱と冷却とを交互に行う必要がある。このため、液体吸収剤の加熱量や冷却量が多くなり、例えば冷媒回路の圧縮機の消費電力の増大を招いてしまう。   However, in the humidity control apparatus described in Patent Document 1, in the absorbent circuit, the liquid absorbent heated on the inflow side of the moisture release unit is cooled on the inflow side of the moisture absorption unit, and the absorbent circuit is circulated. It is necessary to alternately heat and cool the liquid absorbent. For this reason, the heating amount and cooling amount of the liquid absorbent are increased, and for example, the power consumption of the compressor of the refrigerant circuit is increased.

本発明は、かかる点に鑑みてなされたものであり、その目的は、省エネ性に優れた調湿装置を提供することである。   This invention is made | formed in view of this point, The objective is to provide the humidity control apparatus excellent in energy-saving property.

第1の発明は、調湿装置を対象とする。そして、この調湿装置は、冷却部(40c,46a,40d,46b)及び加熱部(40d,46b,40c,46a)と、該冷却部(40c,46a,40d,46b)で冷却される液体吸収剤が流れる吸湿路(36a,41a,36b,41b)を有し該吸湿路(36a,41a,36b,41b)の液体吸収剤が空気の水分を吸収する吸湿部(30a,40a,30b,40b)と、上記加熱部(40d,46b,40c,46a)で加熱される液体吸収剤が流れる放湿路(36b,41b,36a,41a)を有し該放湿路(36b,41b,36a,41a)の液体吸収剤が空気へ水分を放出する放湿部(30b,40b,30a,40a)と、液体吸収剤を搬送するポンプ機構(12,12a,12b)とが接続される吸収剤回路(11)と、吸湿路(36a,41a,36b,41b)と放湿路(36b,41b,36a,41a)の各液体吸収剤を相互に入れ替えることなく該吸湿路(36a,41a,36b,41b)の液体吸収剤及び放湿路(36b,41b,36a,41a)の液体吸収剤でそれぞれ空気を調湿する第1運転と、上記吸湿路(36a,41a,36b,41b)と放湿路(36b,41b,36a,41a)の各液体吸収剤を相互に入れ替える第2運転とを切り換えて行う運転制御部(103)と、上記第2運転時に、上記放湿路(36b,41b,36a,41a)から吸湿路(36a,41a,36b,41b)へ向かう液体吸収剤と、上記吸湿路(36a,41a,36b,41b)から放湿路(36b,41b,36a,41a)へ向かう液体吸収剤とを熱交換させる熱交換器(90)とを備えていることを特徴とする。   The first invention is directed to a humidity control apparatus. The humidity control apparatus includes a cooling unit (40c, 46a, 40d, 46b), a heating unit (40d, 46b, 40c, 46a), and a liquid cooled by the cooling unit (40c, 46a, 40d, 46b). Moisture absorption sections (30a, 40a, 30b, which have a moisture absorption path (36a, 41a, 36b, 41b) through which the absorbent flows and in which the liquid absorbent in the moisture absorption path (36a, 41a, 36b, 41b) absorbs moisture of air 40b) and a moisture release path (36b, 41b, 36a, 41a) through which the liquid absorbent heated by the heating unit (40d, 46b, 40c, 46a) flows, the moisture release path (36b, 41b, 36a) , 41a) Absorbent that connects the moisture release part (30b, 40b, 30a, 40a) that releases moisture to the air and the pump mechanism (12, 12a, 12b) that transports the liquid absorbent The circuit (11), and the moisture absorption paths (36a, 41a, 36b, 41b) and the moisture absorption paths (36a, 41a, 36b) without replacing each liquid absorbent in the moisture release paths (36b, 41b, 36a, 41a) , 41b) and the moisture absorption path (36a, 41b) and the moisture absorption path (36a, 41b) 41a, 36b, 41b) and the operation control unit (103) for switching between the second operation of exchanging the liquid absorbents in the moisture discharge channels (36b, 41b, 36a, 41a) with each other, and during the second operation, The liquid absorbent heading from the moisture discharge path (36b, 41b, 36a, 41a) to the moisture absorption path (36a, 41a, 36b, 41b) and the moisture absorption path (36a, 41a, 36b, 41b) to the moisture discharge path (36b) , 41b, 36a, 41a) and a heat exchanger (90) for exchanging heat with the liquid absorbent.

第1の発明の吸湿部(30a,40a,30b,40b)では、冷却部(40c,46a,40d,46b)で冷却される液体吸収剤が流れる吸湿路(36a,41a,36b,41b)が形成される。吸湿部(30a,40a,30b,40b)では、空気中の水蒸気が液体吸収剤に吸収される。また、放湿部(30b,40b,30a,40a)では、加熱部(40d,46b,40c,46a)で加熱される液体吸収剤が流れる放湿路(36b,41b,36a,41a)が形成される。放湿部(30b,40b,30a,40a)では、液体吸収剤の水蒸気が空気中へ放出される。調湿装置では、吸湿部(30a,40a,30b,40b)で水分が吸収された空気が室内へ供給されることで、室内の除湿が行われる。また、調湿装置では、放湿部(30b,40b,30a,40a)で水分が放出された空気が室内へ供給されることで、室内の加湿が行われる。   In the moisture absorption part (30a, 40a, 30b, 40b) of the first invention, the moisture absorption path (36a, 41a, 36b, 41b) through which the liquid absorbent cooled by the cooling part (40c, 46a, 40d, 46b) flows is provided. It is formed. In the moisture absorption part (30a, 40a, 30b, 40b), water vapor in the air is absorbed by the liquid absorbent. Moreover, in the moisture release part (30b, 40b, 30a, 40a), the moisture release path (36b, 41b, 36a, 41a) through which the liquid absorbent heated by the heating part (40d, 46b, 40c, 46a) flows is formed. Is done. In the moisture release section (30b, 40b, 30a, 40a), the water vapor of the liquid absorbent is released into the air. In the humidity control apparatus, the room is dehumidified by supplying the air in which moisture has been absorbed by the moisture absorption sections (30a, 40a, 30b, 40b) to the room. Further, in the humidity control apparatus, the room is humidified by supplying the air from which moisture has been released by the moisture release section (30b, 40b, 30a, 40a) to the room.

第1の発明では、運転制御部(103)によって第1運転と第2運転とが切り換えて行われる。第1運転では、吸湿路(36a,41a,36b,41b)と放湿路(36b,41b,36a,41a)との間で液体吸収剤が相互に入れ替わることがない。このため、従来例のように、吸収剤回路において、循環する液体吸収剤が蒸発部(冷却部)と凝縮部(加熱部)とで交互に加熱/冷却されることがない。従って、第1運転では、このような液体吸収剤の冷却及び加熱に起因する熱ロスを低減できる。   In the first invention, the operation control unit (103) switches between the first operation and the second operation. In the first operation, the liquid absorbent is not interchanged between the moisture absorption path (36a, 41a, 36b, 41b) and the moisture release path (36b, 41b, 36a, 41a). For this reason, unlike the conventional example, in the absorbent circuit, the circulating liquid absorbent is not alternately heated / cooled by the evaporation section (cooling section) and the condensation section (heating section). Therefore, in the first operation, heat loss due to such cooling and heating of the liquid absorbent can be reduced.

第1運転において、吸湿路(36a,41a,36b,41b)では、液体吸収剤が空気中の水分を吸収する。また、放湿路(36b,41b,36a,41a)では、液体吸収剤の水分が空気中に放出される。これにより、空気の除湿や加湿を行うことができる。一方、第1運転を継続すると、吸湿路(36a,41a,36b,41b)の液体吸収剤の濃度が徐々に低くなっていく。従って、吸湿部(30a,40a,30b,40b)では、空気の吸湿能力(除湿能力)が徐々に低下していく。また、第1運転を継続すると、放湿路(36b,41b,36a,41a)の液体吸収剤の濃度が徐々に高くなっていく。従って、放湿部(30b,40b,30a,40a)では、空気の放湿能力(加湿能力)が徐々に低下していく。このため、本発明では、運転制御部(103)によって第1運転から第2運転へ切換可能となっている。   In the first operation, the liquid absorbent absorbs moisture in the air in the moisture absorption paths (36a, 41a, 36b, 41b). Further, in the moisture discharge path (36b, 41b, 36a, 41a), the moisture of the liquid absorbent is released into the air. Thereby, dehumidification and humidification of air can be performed. On the other hand, when the first operation is continued, the concentration of the liquid absorbent in the moisture absorption path (36a, 41a, 36b, 41b) gradually decreases. Therefore, in the moisture absorption part (30a, 40a, 30b, 40b), the moisture absorption capability (dehumidification capability) of air gradually decreases. Moreover, if the 1st driving | running is continued, the density | concentration of the liquid absorbent of a moisture release path (36b, 41b, 36a, 41a) will become high gradually. Therefore, in the moisture release portion (30b, 40b, 30a, 40a), the moisture release capability (humidification capability) of air gradually decreases. Therefore, in the present invention, the operation control unit (103) can switch from the first operation to the second operation.

第2運転では、吸湿路(36a,41a,36b,41b)と放湿路(36b,41b,36a,41a)の各液体吸収剤が相互に入れ替えられる。具体的に、第2運転が開始されると、放湿路(36b,41b,36a,41a)側にあった高濃度の液体吸収剤が吸湿路(36a,41a,36b,41b)へ移動し、吸湿路(36a,41a,36b,41b)側にあった低濃度の液体吸収剤が放湿路(36b,41b,36a,41a)へ移動する。従って、その後に第1運転を再び行うことで、吸湿部(30a,40a,30b,40b)では、十分な吸湿能力(除湿能力)を得ることができる。また、放湿部(30b,40b,30a,40a)では、十分な放湿能力(加湿能力)を得ることができる。   In the second operation, the liquid absorbents in the moisture absorption path (36a, 41a, 36b, 41b) and the moisture release path (36b, 41b, 36a, 41a) are interchanged with each other. Specifically, when the second operation is started, the high-concentration liquid absorbent that was on the side of the moisture release path (36b, 41b, 36a, 41a) moves to the moisture absorption path (36a, 41a, 36b, 41b). Then, the low-concentration liquid absorbent located on the moisture absorption path (36a, 41a, 36b, 41b) side moves to the moisture discharge path (36b, 41b, 36a, 41a). Accordingly, by performing the first operation again thereafter, the moisture absorption section (30a, 40a, 30b, 40b) can obtain a sufficient moisture absorption capacity (dehumidification capacity). Moreover, in the moisture release part (30b, 40b, 30a, 40a), sufficient moisture release capability (humidification capability) can be obtained.

また、第2運転では、冷却部(40c,46a,40d,46b)によって冷却された状態の吸湿路(36a,41a,36b,41b)側の液体吸収剤と、加熱部(40d,46b,40c,46a)によって加熱された状態の放湿路(36b,41b,36a,41a)側の液体吸収剤とが、熱交換器(90)によって互いに熱交換する。具体的に、第2運転が開始されると比較的低温となる吸湿路(36a,41a,36b,41b)側の液体吸収剤が放湿路(36b,41b,36a,41a)側へ向かい、比較的高温となる放湿路(36b,41b,36a,41a)側の液体吸収剤が吸湿路(36a,41a,36b,41b)側へ向かう。熱交換器(90)では、放湿路(36b,41b,36a,41a)側へ向かう低温の液体吸収剤が、吸湿路(36a,41a,36b,41b)側へ向かう高温の液体吸収剤から吸熱する。その結果、放湿路(36b,41b,36a,41a)側へ向かう液体吸収剤が加熱され、この液体吸収剤の水蒸気分圧が高くなる。同時に、吸湿路(36a,41a,36b,41b)側へ向かう液体吸収剤が冷却され、この液体吸収剤の水蒸気分圧が低くなる。従って、その後の第1運転において、吸湿路(36a,41a,36b,41b)における吸湿能力(除湿能力)や、放湿路(36b,41b,36a,41a)における放湿能力(加湿能力)が増大する。   In the second operation, the liquid absorbent on the side of the moisture absorption path (36a, 41a, 36b, 41b) cooled by the cooling unit (40c, 46a, 40d, 46b) and the heating unit (40d, 46b, 40c) , 46a), the liquid absorbent on the side of the moisture discharge passage (36b, 41b, 36a, 41a) heated by the heat exchanger (90) exchanges heat with each other. Specifically, when the second operation is started, the liquid absorbent on the side of the moisture absorption path (36a, 41a, 36b, 41b), which becomes relatively low in temperature, moves toward the moisture discharge path (36b, 41b, 36a, 41a), The liquid absorbent on the side of the moisture discharge path (36b, 41b, 36a, 41a), which is relatively high in temperature, moves toward the moisture absorption path (36a, 41a, 36b, 41b). In the heat exchanger (90), the low-temperature liquid absorbent toward the moisture discharge path (36b, 41b, 36a, 41a) is changed from the high-temperature liquid absorbent toward the moisture absorption path (36a, 41a, 36b, 41b). It absorbs heat. As a result, the liquid absorbent heading toward the moisture discharge channel (36b, 41b, 36a, 41a) is heated, and the water vapor partial pressure of the liquid absorbent is increased. At the same time, the liquid absorbent toward the moisture absorption path (36a, 41a, 36b, 41b) side is cooled, and the water vapor partial pressure of this liquid absorbent is lowered. Therefore, in the subsequent first operation, the moisture absorption capacity (dehumidification capacity) in the moisture absorption path (36a, 41a, 36b, 41b) and the moisture release capacity (humidification capacity) in the moisture discharge path (36b, 41b, 36a, 41a) are Increase.

第2の発明は、第1の発明において、圧縮機(36)と、周囲に上記放湿路(41b,41a)が形成されて上記加熱部を構成する放熱部(40d,46b,40c,46a)と、周囲に上記吸湿路(41a,41b)が形成されて上記冷却部を構成する蒸発部(40c,46a,40d,46b)とが接続される冷媒回路(35)を備え、上記運転制御部(103)は、第1運転時に上記吸湿路(41a,41b)及び放湿路(41b,41a)に液体吸収剤が留まるように上記ポンプ機構(12)を停止し且つ上記圧縮機(36)を運転し、上記第2運転時に上記吸湿路(41a,41b)と放湿路(41b,41a)の各液体吸収剤を相互に入れ替えるように上記ポンプ機構(12)を運転し且つ上記圧縮機(36)を運転することを特徴とする。   According to a second invention, in the first invention, the compressor (36) and the heat release section (40d, 46b, 40c, 46a) in which the moisture discharge path (41b, 41a) is formed around and constitutes the heating section. ) And an evaporation section (40c, 46a, 40d, 46b) in which the moisture absorption path (41a, 41b) is formed in the periphery and the cooling section is connected to the refrigerant circuit (35). The section (103) stops the pump mechanism (12) so that the liquid absorbent stays in the moisture absorption path (41a, 41b) and the moisture discharge path (41b, 41a) during the first operation, and the compressor (36 ), The pump mechanism (12) is operated and the compression is performed so that the liquid absorbents in the moisture absorption path (41a, 41b) and the moisture release path (41b, 41a) are interchanged during the second operation. The machine (36) is operated.

第2の発明の第1運転では、冷媒回路(35)の圧縮機(36)が運転される一方、吸収剤回路(11)のポンプ機構(12)が停止状態となる。このため、吸収剤回路(11)では、液体吸収剤が循環することがなく、吸湿路(41a,41b)及び放湿路(41b,41a)にそれぞれ液体吸収剤が溜まった状態となる。吸湿路(41a,41b)に溜まった液体吸収剤は、蒸発部(46a,46b)によって冷却され、放湿路(41b,41a)に溜まった液体吸収剤は、放熱部(46b,46a)によって加熱される。   In the first operation of the second invention, the compressor (36) of the refrigerant circuit (35) is operated, while the pump mechanism (12) of the absorbent circuit (11) is stopped. For this reason, in the absorbent circuit (11), the liquid absorbent does not circulate, and the liquid absorbent accumulates in the moisture absorption paths (41a, 41b) and the moisture release paths (41b, 41a), respectively. The liquid absorbent collected in the moisture absorption path (41a, 41b) is cooled by the evaporation section (46a, 46b), and the liquid absorbent collected in the moisture release path (41b, 41a) is cooled by the heat dissipation section (46b, 46a). Heated.

吸湿路(41a,41b)の液体吸収剤が冷却されると、この液体吸収剤の水蒸気分圧が低くなる。このため、空気が吸湿部(40a,40b)を通過すると、この空気中の水蒸気が吸湿路(41a,41b)の液体吸収剤に吸収される。また、放湿路(41b,41a)の液体吸収剤が加熱されると、この液体吸収剤の水蒸気分圧が高くなる。このため、空気が放湿部(40b,40a)を通過すると、放湿路(41b,41a)の液体吸収剤中の水蒸気が空気中へ放出される。従って、第1運転では、吸湿部(40a,40b)で水分が吸収された空気を室内へ供給して、室内の除湿を行うことができる。また、この第1運転では、放湿部(40b,40a)で水分が放出された空気を室内へ供給して、室内の加湿を行うことができる。   When the liquid absorbent in the moisture absorption path (41a, 41b) is cooled, the water vapor partial pressure of the liquid absorbent becomes low. For this reason, when the air passes through the moisture absorption sections (40a, 40b), the water vapor in the air is absorbed by the liquid absorbent in the moisture absorption paths (41a, 41b). Further, when the liquid absorbent in the moisture release channel (41b, 41a) is heated, the water vapor partial pressure of the liquid absorbent increases. For this reason, when air passes through the moisture release section (40b, 40a), water vapor in the liquid absorbent in the moisture release path (41b, 41a) is released into the air. Therefore, in the first operation, the air in which moisture has been absorbed by the moisture absorption sections (40a, 40b) can be supplied to the room to perform dehumidification in the room. Moreover, in this 1st driving | operation, the air from which the water | moisture content was discharge | released by the moisture release part (40b, 40a) can be supplied indoors, and indoor humidification can be performed.

一方、第1運転を継続すると、吸湿路(41a,41b)の液体吸収剤の濃度が徐々に低くなっていく。従って、吸湿部(40a,40b)では、空気の吸湿能力(除湿能力)が徐々に低下していく。また、第1運転を継続すると、放湿路(41b,41a)の液体吸収剤の濃度が徐々に高くなっていく。従って、放湿部(40b,40a)では、空気の放湿能力(加湿能力)が徐々に低下していく。このため、本発明では、運転制御部(103)によって第1運転から第2運転へ切換可能となっている。   On the other hand, when the first operation is continued, the concentration of the liquid absorbent in the moisture absorption path (41a, 41b) gradually decreases. Therefore, in the moisture absorption part (40a, 40b), the moisture absorption capability (dehumidification capability) of air gradually decreases. Moreover, if the 1st driving | running is continued, the density | concentration of the liquid absorbent of a moisture release path (41b, 41a) will become high gradually. Therefore, in the moisture release portion (40b, 40a), the moisture release capability (humidification capability) of air gradually decreases. Therefore, in the present invention, the operation control unit (103) can switch from the first operation to the second operation.

第2運転では、冷媒回路(35)の圧縮機(36)が運転され、且つ吸収剤回路(11)のポンプ機構(12)が運転される。ポンプ機構(12)は、吸湿部(40a,40b)の吸湿路(41a,41b)にある液体吸収剤と、放湿部(40b,40a)の放湿路(41b,41a)にある液体吸収剤とを、互いに入れ替えるように運転される。   In the second operation, the compressor (36) of the refrigerant circuit (35) is operated, and the pump mechanism (12) of the absorbent circuit (11) is operated. The pump mechanism (12) consists of a liquid absorbent in the moisture absorption path (41a, 41b) of the moisture absorption section (40a, 40b) and a liquid absorption in the moisture discharge path (41b, 41a) of the moisture release section (40b, 40a). The agents are operated so as to replace each other.

具体的に、第2運転が開始されると、比較的低温で低濃度となった吸湿路(41a,41b)側の液体吸収剤が放湿路(41b,41a)側へ向かい、比較的高温で高濃度となった放湿路(41b,41a)側の液体吸収剤が吸湿路(41a,41b)側へ向かう。熱交換器(90)では、放湿路(41b,41a)側へ向かう低温の液体吸収剤が、吸湿路(41a,41b)側へ向かう高温の液体吸収剤から吸熱する。その結果、放湿路(41b,41a)側へ送られる液体吸収剤が加熱され、吸湿路(41a,41b)側へ送られる液体吸収剤が冷却される。従って、その後に第1運転を再び行うことで、吸湿部(40a,40b)では、十分な吸湿能力(除湿能力)を得ることができる。また、放湿部(40b,40a)では、十分な放湿能力(加湿能力)を得ることができる。   Specifically, when the second operation is started, the liquid absorbent on the side of the moisture absorption path (41a, 41b), which has a low concentration at a relatively low temperature, moves toward the moisture release path (41b, 41a), and is relatively hot. The liquid absorbent on the side of the moisture release channel (41b, 41a) having a high concentration goes to the side of the moisture absorption channel (41a, 41b). In the heat exchanger (90), the low-temperature liquid absorbent toward the moisture discharge path (41b, 41a) absorbs heat from the high-temperature liquid absorbent toward the moisture absorption path (41a, 41b). As a result, the liquid absorbent sent to the moisture release path (41b, 41a) side is heated, and the liquid absorbent sent to the moisture absorption path (41a, 41b) side is cooled. Therefore, by performing the first operation again thereafter, the moisture absorption section (40a, 40b) can obtain a sufficient moisture absorption capacity (dehumidification capacity). Moreover, in the moisture release part (40b, 40a), sufficient moisture release capability (humidification capability) can be obtained.

第3の発明は、第1の発明において、上記吸収剤回路(11)には、液体吸収剤の流路を、上記吸湿路(36a,41a,36b,41b)を含む閉ループ状の吸湿側循環回路(11a,11b)と上記放湿路(41b,41a)を含む閉ループ状の放湿側循環回路(11b,11a)とを形成する第1流路と、上記吸湿路(36a,41a,36b,41b)及び放湿路(36b,41b,36a,41a)を含む閉ループ状の吸放湿循環回路(11c)を形成する第2流路とに切り換える切換機構(16,17)が設けられ、上記運転制御部(103)は、上記吸収剤回路(11)の流路が、上記第1運転時に第1流路となり、上記第2運転時に第2流路となるように上記切換機構(16,17)を制御することを特徴とする。   According to a third aspect of the present invention, in the first aspect of the present invention, the absorbent circuit (11) includes a liquid absorbent flow path in a closed-loop moisture absorption side circulation including the moisture absorption paths (36a, 41a, 36b, 41b). A first flow path forming a circuit (11a, 11b) and a closed loop-shaped moisture release side circulation circuit (11b, 11a) including the moisture release path (41b, 41a), and the moisture absorption path (36a, 41a, 36b) 41b) and a switching mechanism (16, 17) for switching to a second flow path forming a closed-loop moisture absorption / desorption circuit (11c) including a moisture release path (36b, 41b, 36a, 41a), The operation control unit (103) includes the switching mechanism (16) so that the flow path of the absorbent circuit (11) becomes the first flow path during the first operation and becomes the second flow path during the second operation. , 17).

第3の発明では、第1運転と第2運転において、吸収剤回路(11)の流路が切換機構(16,17)によって第1流路と第2流路とに切り換わる。第1運転時に吸収剤回路(11)が第1流路になると、閉ループ状の吸湿側循環回路(11a,11b)と閉ループ状の放湿側循環回路(11b,11a)とが形成される。吸湿側循環回路(11a,11b)では、冷却部(40c,46a,40d,46b)で冷却された液体吸収剤が吸湿路(36a,41a,36b,41b)を流れる。これにより、吸湿部(30a,40a,30b,40b)では、空気中の水分が吸湿路(36a,41a,36b,41b)を流れる液体吸収剤に吸収される。放湿側循環回路(11b,11a)では、加熱部(40d,46b,40c,46a)で加熱された液体吸収剤が放湿路(36b,41b,36a,41a)を流れる。これにより、放湿部(30b,40b,30a,40a)では、放湿路(36b,41b,36a,41a)を流れる液体吸収剤から空気中へ水分が放出される。   In the third aspect, in the first operation and the second operation, the flow path of the absorbent circuit (11) is switched between the first flow path and the second flow path by the switching mechanism (16, 17). When the absorbent circuit (11) becomes the first flow path during the first operation, a closed-loop moisture absorption side circulation circuit (11a, 11b) and a closed-loop moisture release side circulation circuit (11b, 11a) are formed. In the moisture absorption side circulation circuit (11a, 11b), the liquid absorbent cooled by the cooling unit (40c, 46a, 40d, 46b) flows through the moisture absorption path (36a, 41a, 36b, 41b). Thereby, in the moisture absorption part (30a, 40a, 30b, 40b), the water | moisture content in air is absorbed by the liquid absorbent which flows through a moisture absorption path (36a, 41a, 36b, 41b). In the moisture release side circulation circuit (11b, 11a), the liquid absorbent heated by the heating unit (40d, 46b, 40c, 46a) flows through the moisture release path (36b, 41b, 36a, 41a). Thereby, in a moisture release part (30b, 40b, 30a, 40a), a water | moisture content is discharge | released in the air from the liquid absorbent which flows through a moisture release path (36b, 41b, 36a, 41a).

一方、このような第1運転を継続して行うと、吸湿側循環回路(11a,11b)を循環する液体吸収剤の濃度が徐々に低くなっていく。また、放湿側循環回路(11b,11a)を循環する液体吸収剤の濃度が徐々に高くなっていく。このため、本発明では、運転制御部(103)によって第1運転から第2運転へ切換可能となっている。   On the other hand, when such a first operation is continued, the concentration of the liquid absorbent circulating in the moisture absorption side circulation circuit (11a, 11b) gradually decreases. Moreover, the density | concentration of the liquid absorbent which circulates through the moisture release side circulation circuit (11b, 11a) becomes high gradually. Therefore, in the present invention, the operation control unit (103) can switch from the first operation to the second operation.

第2運転時に吸収剤回路(11)が第2流路になると、吸湿路(36a,41a,36b,41b)及び放湿路(36b,41b,36a,41a)を含む閉ループ状の吸放湿循環回路(11c)が形成される。これにより、比較的低温で低濃度となった吸湿路(36a,41a,36b,41b)側の液体吸収剤が放湿路(36b,41b,36a,41a)側へ向かい、比較的高温で高濃度となった放湿路(36b,41b,36a,41a)側の液体吸収剤が吸湿路(36a,41a,36b,41b)側へ向かう。熱交換器(90)では、放湿路(36b,41b,36a,41a)側へ向かう低温の液体吸収剤が、吸湿路(36a,41a,36b,41b)側へ向かう高温の液体吸収剤から吸熱する。その結果、放湿路(36b,41b,36a,41a)側へ送られる液体吸収剤が加熱され、吸湿路(36a,41a,36b,41b)側へ送られる液体吸収剤が冷却される。従って、その後に第1運転を再び行うことで、吸湿部(30a,40a,30b,40b)では、十分な吸湿能力(除湿能力)を得ることができる。また、放湿部(30b,40b,30a,40a)では、十分な放湿能力(加湿能力)を得ることができる。   When the absorbent circuit (11) becomes the second flow path during the second operation, the moisture absorption path is a closed loop including the moisture absorption path (36a, 41a, 36b, 41b) and the moisture discharge path (36b, 41b, 36a, 41a). A circulation circuit (11c) is formed. As a result, the liquid absorbent on the side of the moisture absorption channel (36a, 41a, 36b, 41b), which has a low concentration at a relatively low temperature, moves toward the moisture release channel (36b, 41b, 36a, 41a), and increases at a relatively high temperature. The liquid absorbent on the moisture discharge path (36b, 41b, 36a, 41a) side having the concentration goes to the moisture absorption path (36a, 41a, 36b, 41b) side. In the heat exchanger (90), the low-temperature liquid absorbent toward the moisture discharge path (36b, 41b, 36a, 41a) is changed from the high-temperature liquid absorbent toward the moisture absorption path (36a, 41a, 36b, 41b). It absorbs heat. As a result, the liquid absorbent sent to the moisture discharge path (36b, 41b, 36a, 41a) side is heated, and the liquid absorbent sent to the moisture absorption path (36a, 41a, 36b, 41b) side is cooled. Accordingly, by performing the first operation again thereafter, the moisture absorption section (30a, 40a, 30b, 40b) can obtain a sufficient moisture absorption capacity (dehumidification capacity). Moreover, in the moisture release part (30b, 40b, 30a, 40a), sufficient moisture release capability (humidification capability) can be obtained.

第4の発明は、第3の発明において、上記ポンプ機構(12a,12b)は、上記第2運転時における吸放湿循環回路(11c)の液体吸収剤の流量を、上記第1運転時における放湿側循環回路(11b,11a)及び吸湿側循環回路(11a,11b)の液体吸収剤の各流量よりも小さくするように構成されることを特徴とする。   In a fourth aspect based on the third aspect, the pump mechanism (12a, 12b) is configured so that the flow rate of the liquid absorbent in the moisture absorption / desorption circuit (11c) during the second operation is the same as that during the first operation. It is characterized by being configured to be smaller than each flow rate of the liquid absorbent in the moisture release side circulation circuit (11b, 11a) and the moisture absorption side circulation circuit (11a, 11b).

第4の発明では、第2運転時におけるポンプ機構(12a,12b)の流量が、第1運転時におけるポンプ機構(12a,12b)の流量よりも小さくなる。つまり、第2運転では、放湿路(36b,41b,36a,41a)及び吸湿路(36a,41a,36b,41b)の液体吸収剤を入れ替える際の、液体吸収剤の流量が比較的小さく設定される。これにより、熱交換器(90)においても、吸湿路(36a,41a,36b,41b)側から放湿路(36b,41b,36a,41a)へ向かう液体吸収剤の流量、及び放湿路(36b,41b,36a,41a)側から吸湿路(36a,41a,36b,41b)へ向かう液体吸収剤の流量が小さくなる。熱交換器(90)における各液体吸収剤の流量が小さくなると、両者の液体吸収剤の間での熱交換の効率(温度効率)が向上する。これにより、放湿路(36b,41b,36a,41a)へ送られる液体吸収剤の加熱量、及び吸湿路(36a,41a,36b,41b)へ送られる液体吸収剤の冷却量が増大する。   In the fourth invention, the flow rate of the pump mechanism (12a, 12b) during the second operation is smaller than the flow rate of the pump mechanism (12a, 12b) during the first operation. That is, in the second operation, the flow rate of the liquid absorbent is set to be relatively small when the liquid absorbent in the moisture discharge passage (36b, 41b, 36a, 41a) and the moisture absorption passage (36a, 41a, 36b, 41b) is replaced. Is done. Thereby, also in the heat exchanger (90), the flow rate of the liquid absorbent from the moisture absorption path (36a, 41a, 36b, 41b) side toward the moisture discharge path (36b, 41b, 36a, 41a), and the moisture discharge path ( The flow rate of the liquid absorbent from the 36b, 41b, 36a, 41a) side toward the moisture absorption path (36a, 41a, 36b, 41b) is reduced. When the flow rate of each liquid absorbent in the heat exchanger (90) is reduced, the efficiency (temperature efficiency) of heat exchange between the two liquid absorbents is improved. Thereby, the heating amount of the liquid absorbent sent to the moisture discharge path (36b, 41b, 36a, 41a) and the cooling amount of the liquid absorbent sent to the moisture absorption path (36a, 41a, 36b, 41b) are increased.

第5の発明は、第1乃至第4のいずれか1つの発明において、上記熱交換器(90)は、対向流式であることを特徴とする。   According to a fifth invention, in any one of the first to fourth inventions, the heat exchanger (90) is of a counterflow type.

第5の発明では、熱交換器(90)が対向流式となる。このため第2運転では、放湿路(36b,41b,36a,41a)へ送られる液体吸収剤をより高温にでき、吸湿路(36a,41a,36b,41b)へ送られる液体吸収剤をより低温にできる。   In 5th invention, a heat exchanger (90) becomes a counterflow type. Therefore, in the second operation, the liquid absorbent sent to the moisture discharge path (36b, 41b, 36a, 41a) can be heated to a higher temperature, and the liquid absorbent sent to the moisture absorption path (36a, 41a, 36b, 41b) Can be low temperature.

本発明の第1運転では、吸湿路(36a,41a,36b,41b)と放湿路(36b,41b,36a,41a)の液体吸収剤を相互に入れ替えずに空気を調湿している。このため、本発明によれば、従来例のように、液体吸収剤を蒸発部と放熱部とで交互に繰り返し加熱/冷却する必要がない。これにより、液体吸収剤の冷却と加熱とを繰り返すことに起因する熱ロスを抑えることができ、この調湿装置の省エネ性を向上できる。   In the first operation of the present invention, the air is conditioned without replacing the liquid absorbent in the moisture absorption path (36a, 41a, 36b, 41b) and the moisture release path (36b, 41b, 36a, 41a). For this reason, according to the present invention, unlike the conventional example, it is not necessary to repeatedly heat / cool the liquid absorbent alternately between the evaporation section and the heat radiation section. Thereby, the heat loss resulting from repeating cooling and heating of a liquid absorber can be suppressed, and the energy-saving property of this humidity control apparatus can be improved.

また、第2運転を実行させることで、吸湿路(36a,41a,36b,41b)にあった低濃度の液体吸収剤を放湿路(36b,41b,36a,41a)に送るとともに、放湿路(36b,41b,36a,41a)にあった高濃度の液体吸収剤を吸湿路(36a,41a,36b,41b)に送ることができる。これにより、吸湿部(30a,40a,30b,40b)における除湿能力や、放湿部(30b,40b,30a,40a)における加湿能力を十分に維持することができ、この調湿装置の信頼性を確保できる。   In addition, by executing the second operation, the liquid absorbent having a low concentration in the moisture absorption path (36a, 41a, 36b, 41b) is sent to the moisture release path (36b, 41b, 36a, 41a) and moisture is released. The high-concentration liquid absorbent in the passages (36b, 41b, 36a, 41a) can be sent to the moisture absorption passages (36a, 41a, 36b, 41b). As a result, it is possible to sufficiently maintain the dehumidifying capacity in the moisture absorbing section (30a, 40a, 30b, 40b) and the humidifying capacity in the moisture releasing section (30b, 40b, 30a, 40a). Can be secured.

この第2運転では、吸湿路(36a,41a,36b,41b)側へ送られる液体吸収剤の熱を、放湿路(36b,41b,36a,41a)側へ送られる液体吸収剤へ熱交換器(90)を介して付与することができる。これにより、吸湿路(36a,41a,36b,41b)へ送られる液体吸収剤を冷却し、吸湿部(30a,40a,30b,40b)での吸湿能力(除湿能力)を増大できる。同時に、放湿路(36b,41b,36a,41a)へ送られる液体吸収剤を加熱し、放湿部(30b,40b,30a,40a)で放湿能力(加湿能力)を増大できる。換言すると、吸湿部(30a,40a,30b,40b)での冷却部(40c,46a,40d,46b)の冷却量や、放湿部(30b,40b,30a,40a)での加熱部(40d,46b,40c,46a)の加熱量を低減でき、調湿装置の省エネ性を向上できる。   In this second operation, the heat of the liquid absorbent sent to the moisture absorption path (36a, 41a, 36b, 41b) side is exchanged with the liquid absorbent sent to the moisture release path (36b, 41b, 36a, 41a) side. Can be applied via the vessel (90). Thereby, the liquid absorbent sent to the moisture absorption path (36a, 41a, 36b, 41b) can be cooled, and the moisture absorption capability (dehumidification capability) in the moisture absorption part (30a, 40a, 30b, 40b) can be increased. At the same time, the liquid absorbent sent to the moisture discharge path (36b, 41b, 36a, 41a) can be heated, and the moisture release capacity (humidification ability) can be increased by the moisture release section (30b, 40b, 30a, 40a). In other words, the cooling amount of the cooling part (40c, 46a, 40d, 46b) in the moisture absorption part (30a, 40a, 30b, 40b) and the heating part (40d) in the moisture releasing part (30b, 40b, 30a, 40a) 46b, 40c, 46a) can be reduced, and the energy-saving performance of the humidity control device can be improved.

また、第2運転では、吸湿路(36a,41a,36b,41b)と放湿路(36b,41b,36a,41a)との間で液体吸収剤を入れ替える間だけポンプ機構(12,12a,12b)を運転すればよいので、ポンプ機構(12,12a,12b)の動力も低く抑えることができる。   In the second operation, the pump mechanism (12, 12a, 12b) is only used while the liquid absorbent is exchanged between the moisture absorption path (36a, 41a, 36b, 41b) and the moisture release path (36b, 41b, 36a, 41a). ) Can be operated, the power of the pump mechanism (12, 12a, 12b) can be kept low.

第2の発明では、第1運転にポンプ機構(12)を停止させ、吸湿路(41a,41b)と放湿路(41b,41a)とにそれぞれ液体吸収剤を溜めた状態で、吸湿路(41a,41b)の液体吸収剤を冷却し且つ放湿路(41b,41a)の液体吸収剤を加熱している。このため、本発明によれば、従来例のように、吸収剤回路を循環する液体吸収剤を蒸発部と放熱部とで交互に繰り返し加熱/冷却する必要がない。これにより、液体吸収剤の冷却と加熱とを繰り返すことに起因する熱ロスを抑えることができ、圧縮機(36)の消費電力を低減できる。   In the second invention, the pump mechanism (12) is stopped in the first operation, and the liquid absorbent is stored in each of the moisture absorption paths (41a, 41b) and the moisture release paths (41b, 41a), and the moisture absorption path ( The liquid absorbent of 41a, 41b) is cooled and the liquid absorbent of the moisture release channel (41b, 41a) is heated. For this reason, according to the present invention, unlike the conventional example, it is not necessary to repeatedly heat / cool the liquid absorbent circulating through the absorbent circuit alternately between the evaporation section and the heat radiation section. Thereby, the heat loss resulting from repeating cooling and heating of a liquid absorber can be suppressed, and the power consumption of a compressor (36) can be reduced.

加えて、第1運転では、ポンプ機構(12)も運転させる必要がないため、ポンプ機構(12)の動力も低減できる。その結果、省エネ性に優れた調湿装置を提供できる。   In addition, in the first operation, it is not necessary to operate the pump mechanism (12), so the power of the pump mechanism (12) can be reduced. As a result, it is possible to provide a humidity control device with excellent energy saving performance.

また、第1運転と第2運転の切換時にも、圧縮機(36)を継続して運転できるので、吸湿路(41a,41b)での液体吸収剤の冷却及び放湿路(41b,41a)での液体吸収剤の加熱を維持できるとともに、圧縮機(36)の発停回数も抑えることができる。   Further, since the compressor (36) can be continuously operated even when switching between the first operation and the second operation, the liquid absorbent is cooled and dehumidified in the moisture absorption path (41a, 41b) (41b, 41a). In addition, the heating of the liquid absorbent can be maintained, and the number of starts and stops of the compressor (36) can be suppressed.

更に、吸収剤回路に流路切換弁等や複数のポンプ機構等を設けずとも、単純にポンプ機構(12)をON/OFFさせることで、第1運転と第2運転とを切り換えることができる。これにより、吸収剤回路(11)の簡素化、ひいては調湿装置の低コスト化を図ることができる。   Furthermore, the first operation and the second operation can be switched by simply turning on / off the pump mechanism (12) without providing a flow path switching valve or a plurality of pump mechanisms in the absorbent circuit. . Thereby, simplification of an absorbent circuit (11) and the cost reduction of a humidity control apparatus can be achieved by extension.

第3の発明では、第1運転時において、吸湿側循環流路(11a,11b)と放湿側循環流路(11b,11a)とをそれぞれ閉ループ状に切り離すようにしている。これにより、本発明においても、液体吸収剤の加熱と冷却とを繰り返すことに起因する熱ロスを抑えることができる。   In the third invention, during the first operation, the moisture absorption side circulation channels (11a, 11b) and the moisture release side circulation channels (11b, 11a) are separated in a closed loop shape. Thereby, also in this invention, the heat loss resulting from repeating heating and cooling of a liquid absorbent can be suppressed.

特に、第4の発明では、第2運転時におけるポンプ機構(12,12a,12b)の流量を低減しているため、熱交換器(90)における各液体吸収剤の熱交換を促進できる。その結果、その後の第1運転における、吸湿部(40a,40b)での吸湿能力(除湿能力)や、放湿部(30b,40b,30a,40a)での放湿能力(加湿能力)を更に増大できる。   In particular, in the fourth invention, since the flow rate of the pump mechanism (12, 12a, 12b) during the second operation is reduced, heat exchange of each liquid absorbent in the heat exchanger (90) can be promoted. As a result, in the subsequent first operation, the moisture absorption capacity (dehumidification capacity) in the moisture absorption section (40a, 40b) and the moisture release capacity (humidification capacity) in the moisture release section (30b, 40b, 30a, 40a) are further increased. Can be increased.

また、第5の発明では、熱交換器(90)を対向流式としたため、第2運転時に放湿部(30b,40b,30a,40a)へ送られる液体吸収剤をより高温に、吸湿部(30a,40a,30b,40b)へ送られる液体吸収剤をより低温にできる。その結果、吸湿部(30a,40a,30b,40b)での吸湿能力(除湿能力)や、放湿部(30b,40b,30a,40a)での放湿能力(加湿能力)を更に増大できる。   In the fifth aspect of the invention, since the heat exchanger (90) is a counter-flow type, the liquid absorbent sent to the moisture release section (30b, 40b, 30a, 40a) during the second operation is heated to a higher temperature, The liquid absorbent sent to (30a, 40a, 30b, 40b) can be made at a lower temperature. As a result, it is possible to further increase the moisture absorption capability (dehumidification capability) in the moisture absorption portion (30a, 40a, 30b, 40b) and the moisture release capability (humidification capability) in the moisture release portion (30b, 40b, 30a, 40a).

図1は、実施形態1に係る調湿装置の概略構造を示す平面図である。FIG. 1 is a plan view illustrating a schematic structure of the humidity control apparatus according to the first embodiment. 図2は、実施形態1に係る給気側及び排気側のモジュールをその一部を省略して図示した概略斜視図である。FIG. 2 is a schematic perspective view illustrating the supply-side and exhaust-side modules according to Embodiment 1 with a part thereof omitted. 図3は、実施形態1に係る給気側及び排気側のモジュールをその一部を省略して図示した水平断面図である。FIG. 3 is a horizontal cross-sectional view illustrating the supply side and exhaust side modules according to the first embodiment with a part thereof omitted. 図4は、実施形態1に係る冷媒回路及び吸収剤回路の概略構成図であり、除湿運転における冷媒の流れ、及び吸収剤の流れ(入れ替え運転時のみ)を示す図である。FIG. 4 is a schematic configuration diagram of the refrigerant circuit and the absorbent circuit according to the first embodiment, and is a diagram illustrating the refrigerant flow and the absorbent flow (only during the replacement operation) in the dehumidifying operation. 図5は、実施形態1に係る冷媒回路及び吸収剤回路の概略構成図であり、加湿運転における冷媒の流れ、及び吸収剤の流れ(入れ替え運転時のみ)を示す図である。FIG. 5 is a schematic configuration diagram of the refrigerant circuit and the absorbent circuit according to the first embodiment, and is a diagram illustrating the flow of the refrigerant in the humidification operation and the flow of the absorbent (only during the replacement operation). 図6は、実施形態2に係る冷媒回路及び吸収剤回路の概略構成図であり、除湿運転時の両側循環運転における冷媒の流れ、及び吸収剤の流れを示す図である。FIG. 6 is a schematic configuration diagram of the refrigerant circuit and the absorbent circuit according to the second embodiment, and is a diagram illustrating the refrigerant flow and the absorbent flow in the double-sided circulation operation during the dehumidifying operation. 図7は、実施形態2に係る冷媒回路及び吸収剤回路の概略構成図であり、除湿運転時の入れ替え運転における冷媒の流れ、及び吸収剤の流れを示す図である。FIG. 7 is a schematic configuration diagram of the refrigerant circuit and the absorbent circuit according to the second embodiment, and is a diagram illustrating the refrigerant flow and the absorbent flow in the replacement operation during the dehumidifying operation. 図8は、実施形態2に係る冷媒回路及び吸収剤回路の概略構成図であり、加湿運転時の両側循環運転における冷媒の流れ、及び吸収剤の流れを示す図である。FIG. 8 is a schematic configuration diagram of the refrigerant circuit and the absorbent circuit according to the second embodiment, and is a diagram illustrating the refrigerant flow and the absorbent flow in the double-sided circulation operation during the humidification operation. 図9は、実施形態2に係る冷媒回路及び吸収剤回路の概略構成図であり、加湿運転時の入れ替え運転における冷媒の流れ、及び吸収剤の流れを示す図である。FIG. 9 is a schematic configuration diagram of the refrigerant circuit and the absorbent circuit according to the second embodiment, and is a diagram illustrating the flow of the refrigerant and the flow of the absorbent in the replacement operation during the humidifying operation. 図10は、実施形態2の変形例に係る給気側及び排気側モジュールの概略構成を示す斜視図である。FIG. 10 is a perspective view showing a schematic configuration of an air supply side and exhaust side module according to a modification of the second embodiment. 図11は、実施形態2の変形例に係る冷媒回路及び吸収剤回路の概略構成図である。FIG. 11 is a schematic configuration diagram of a refrigerant circuit and an absorbent circuit according to a modification of the second embodiment. 図12は、その他の第1の例に係る冷媒回路及び吸収剤回路の概略構成図である。FIG. 12 is a schematic configuration diagram of a refrigerant circuit and an absorbent circuit according to another first example. 図13は、その他の第2の例に係る冷媒回路及び吸収剤回路の概略構成図である。FIG. 13 is a schematic configuration diagram of a refrigerant circuit and an absorbent circuit according to another second example. 図14は、その他の第3の例に係る冷媒回路及び吸収剤回路の概略構成図である。FIG. 14 is a schematic configuration diagram of a refrigerant circuit and an absorbent circuit according to another third example.

本発明の実施形態を図面に基づいて詳細に説明する。なお、以下で説明する実施形態および変形例は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。   Embodiments of the present invention will be described in detail with reference to the drawings. Note that the embodiments and modifications described below are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

《発明の実施形態1》
実施形態1の調湿装置(10)は、液体吸収剤を用いて室内の調湿を行う。調湿装置(10)は、除湿運転と加湿運転とを選択的に行う。また、調湿装置(10)は、室外の空気(OA)を取り込み、この空気を供給空気(SA)として室内へ供給する同時に、室内の空気(RA)を取り込み、この空気を排出空気(EA)として室外へ排出する。
Embodiment 1 of the Invention
The humidity control apparatus (10) of Embodiment 1 performs indoor humidity control using a liquid absorbent. The humidity controller (10) selectively performs a dehumidifying operation and a humidifying operation. The humidity control device (10) takes in outdoor air (OA) and supplies this air to the room as supply air (SA). At the same time, it takes in indoor air (RA) and discharges this air into the exhaust air (EA ) To discharge outside.

〈調湿装置の構成〉
本実施形態の調湿装置(10)は、ケーシング(20)を備えている。ケーシング(20)には、給気ファン(27)、排気ファン(28)、給気側モジュール(40a)、及び排気側モジュール(40b)が収容されている。
<Configuration of humidity control device>
The humidity control apparatus (10) of the present embodiment includes a casing (20). The casing (20) accommodates an air supply fan (27), an exhaust fan (28), an air supply side module (40a), and an exhaust side module (40b).

−ケーシング−
図1に示すように、ケーシング(20)は、直方体の箱状に形成されている。ケーシング(20)では、その一方の端面に外気吸込口(21)と排気口(24)とが形成され、その他方の端面に内気吸込口(23)と給気口(22)とが形成されている。ケーシング(20)の内部空間は、給気通路(25)と排気通路(26)に仕切られている。給気通路(25)は、外気吸込口(21)及び給気口(22)に連通している。給気通路(25)には、給気ファン(27)と給気側モジュール(40a)とが配置されている。一方、排気通路(26)は、内気吸込口(23)及び排気口(24)に連通している。排気通路(26)には、排気ファン(28)と排気側モジュール(40b)とが配置されている。
-Casing-
As shown in FIG. 1, the casing (20) is formed in a rectangular parallelepiped box shape. In the casing (20), an outside air suction port (21) and an exhaust port (24) are formed on one end surface, and an inside air suction port (23) and an air supply port (22) are formed on the other end surface. ing. The internal space of the casing (20) is partitioned into an air supply passage (25) and an exhaust passage (26). The air supply passage (25) communicates with the outside air suction port (21) and the air supply port (22). An air supply fan (27) and an air supply side module (40a) are arranged in the air supply passage (25). On the other hand, the exhaust passage (26) communicates with the inside air suction port (23) and the exhaust port (24). An exhaust fan (28) and an exhaust side module (40b) are arranged in the exhaust passage (26).

−給気側モジュール及び排気側モジュール−
給気側モジュール(40a)及び排気側モジュール(40b)は、液体吸収剤を用いて空気を調湿する調湿用モジュールである。各モジュール(40a,40b)は、図2及び図3に示すように、複数の内側部材(60)と外側ケース(50)と伝熱部材(46a,46b)とを備えている。
-Supply side module and exhaust side module-
The supply side module (40a) and the exhaust side module (40b) are humidity control modules that adjust the humidity of the air using a liquid absorbent. As shown in FIGS. 2 and 3, each module (40a, 40b) includes a plurality of inner members (60), an outer case (50), and heat transfer members (46a, 46b).

各内側部材(60)は、両端が開口した中空の直方体状に形成されている。この内側部材(60)は、支持枠(61)と該支持枠(61)の側面を覆う透湿膜(62)とを備えている。この透湿膜(62)は、液体吸収剤を透過させずに水蒸気を透過させる膜である。この透湿膜(62)としては、例えば、PTFE等のフッ素樹脂から成る疎水性多孔膜を用いることができる。   Each inner member (60) is formed in a hollow rectangular parallelepiped shape whose both ends are open. The inner member (60) includes a support frame (61) and a moisture permeable membrane (62) that covers the side surface of the support frame (61). The moisture permeable membrane (62) is a membrane that allows water vapor to pass through without passing through the liquid absorbent. As the moisture permeable membrane (62), for example, a hydrophobic porous membrane made of a fluororesin such as PTFE can be used.

外側ケース(50)は中空の直方体状に形成され、この外側ケース(50)の側板(53,54)には複数の通風孔(56)が形成されている。この外側ケース(50)には、複数の通風孔(56)と同数の内側部材(60)が収容されている。内側部材(60)は、それぞれの側面を覆う透湿膜(62)が互いに向かい合う姿勢で、外側ケース(50)の長手方向に一列に配列されている。そして、内側部材(60)は、その開口部(63)が側板(53,54)の通風孔(56)と重なるように、外側ケース(50)に固定される。   The outer case (50) is formed in a hollow rectangular parallelepiped shape, and a plurality of ventilation holes (56) are formed in the side plates (53, 54) of the outer case (50). The outer case (50) accommodates the same number of inner members (60) as the plurality of ventilation holes (56). The inner member (60) is arranged in a line in the longitudinal direction of the outer case (50) with the moisture permeable membranes (62) covering the respective side surfaces facing each other. The inner member (60) is fixed to the outer case (50) such that the opening (63) overlaps with the ventilation holes (56) of the side plates (53, 54).

内側部材(60)の内側の空間は、外側ケース(50)の通風孔(56)を介して外部と連通しており、空気が流れる空気通路(42)となっている。空気通路(42)には、給気通路(25)又は排気通路(26)を流れる空気が流通する。   The space inside the inner member (60) communicates with the outside through the ventilation hole (56) of the outer case (50), and serves as an air passage (42) through which air flows. Air flowing through the air supply passage (25) or the exhaust passage (26) flows through the air passage (42).

また、内側部材(60)の外側で且つ外側ケース(50)の内側の空間は、液体吸収剤が流れる吸収剤通路(41)となっている。吸収剤通路(41)では、吸収剤回路(11)を循環する液体吸収剤が流通する。従って、透湿膜(62)は、その表面が空気通路(42)を流れる空気と接触し、その裏面が吸収剤回路(11)を流れる液体吸収剤と接触する。   The space outside the inner member (60) and inside the outer case (50) is an absorbent passage (41) through which the liquid absorbent flows. In the absorbent passage (41), the liquid absorbent circulating in the absorbent circuit (11) flows. Therefore, the moisture permeable membrane (62) has a surface in contact with the air flowing through the air passage (42) and a back surface in contact with the liquid absorbent flowing in the absorbent circuit (11).

給気側モジュール(40a)の伝熱部材(46a)と、排気側モジュール(40b)の伝熱部材(46b)とは、複数本の伝熱管(70)と、一つの第1ヘッダ(71)と、一つの第2ヘッダ(72)とを備えている。各伝熱管(70)は、内部が複数の流路に仕切られた多穴扁平管である。複数の伝熱管(70)は、それぞれの平坦面が互いに向かい合う姿勢で、互いに一定の間隔をおいて一列に配置されている。第1ヘッダ(71)は一列に配置された各伝熱管(70)の上端に接合され、第2ヘッダ(72)は一列に配置された各伝熱管(70)の下端に接合されている。   The heat transfer member (46a) of the supply side module (40a) and the heat transfer member (46b) of the exhaust side module (40b) include a plurality of heat transfer tubes (70) and one first header (71). And one second header (72). Each heat transfer tube (70) is a multi-hole flat tube whose interior is partitioned into a plurality of flow paths. The plurality of heat transfer tubes (70) are arranged in a row at regular intervals with their flat surfaces facing each other. The first header (71) is joined to the upper end of each heat transfer tube (70) arranged in a row, and the second header (72) is joined to the lower end of each heat transfer tube (70) arranged in a row.

外側ケース(50)内において、各伝熱部材(46a,46b)の伝熱管(70)は、隣り合う内側部材(60)の間に一本ずつ配置され、この伝熱管(70)の表面が吸収剤通路(41)を流れる液体吸収剤と接触する。つまり、給気側モジュール(40a)及び排気側モジュール(40b)では、伝熱部材(46a,46b)の周囲に液体吸収剤が流れる吸収剤通路(41)(詳細は後述する放湿路(41b,41a)及び吸湿路(41a,41b))が形成される。   In the outer case (50), one heat transfer tube (70) of each heat transfer member (46a, 46b) is arranged between adjacent inner members (60), and the surface of the heat transfer tube (70) is It contacts the liquid absorbent flowing through the absorbent passage (41). That is, in the supply side module (40a) and the exhaust side module (40b), the absorbent passage (41) in which the liquid absorbent flows around the heat transfer member (46a, 46b) (the moisture release passage (41b described in detail later)). 41a) and moisture absorption channels (41a, 41b)) are formed.

−冷媒回路−
調湿装置(10)は、図4に示すように、冷媒回路(35)を備えている。冷媒回路(35)は、圧縮機(36)と、四路切換弁(37)と、膨張弁(38)と、給気側モジュール(40a)の伝熱部材(46a)と、排気側モジュール(40b)の伝熱部材(46b)とが接続された閉回路である。この冷媒回路(35)では、圧縮機(36)の吐出側が四路切換弁(37)の第1のポートに、圧縮機(36)の吸入側が四路切換弁(37)の第2のポートに、それぞれ接続される。また、この冷媒回路(35)では、四路切換弁(37)の第3のポートから第4のポートへ向かって順に、排気側モジュール(40b)の伝熱部材(46b)と、膨張弁(38)と、給気側モジュール(40a)の伝熱部材(46a)とが配置されている。冷媒回路(35)は、該冷媒回路(35)に封入された冷媒を循環させることによって、蒸気圧縮冷凍サイクルを行う。そして、冷媒回路(35)は、給気側モジュール(40a)及び排気側モジュール(40b)に対して、冷媒を熱媒体として供給する。
-Refrigerant circuit-
As shown in FIG. 4, the humidity control apparatus (10) includes a refrigerant circuit (35). The refrigerant circuit (35) includes a compressor (36), a four-way switching valve (37), an expansion valve (38), a heat transfer member (46a) of the air supply side module (40a), and an exhaust side module ( 40b) is a closed circuit connected to the heat transfer member (46b). In this refrigerant circuit (35), the discharge side of the compressor (36) is the first port of the four-way switching valve (37), and the suction side of the compressor (36) is the second port of the four-way switching valve (37). Are connected to each other. In this refrigerant circuit (35), the heat transfer member (46b) of the exhaust side module (40b) and the expansion valve (in order) from the third port to the fourth port of the four-way switching valve (37) in order. 38) and the heat transfer member (46a) of the air supply side module (40a) are arranged. The refrigerant circuit (35) performs a vapor compression refrigeration cycle by circulating the refrigerant sealed in the refrigerant circuit (35). The refrigerant circuit (35) supplies the refrigerant as a heat medium to the supply side module (40a) and the exhaust side module (40b).

四路切換弁(37)は、第1状態(図4に実線で示す状態)と、第2状態(同図に破線で示す状態)とに切り換わる。第1状態の四路切換弁(37)では、第1のポートが第3のポートに連通し、第2のポートが第4のポートに連通する。一方、第2状態の四路切換弁(37)では、第1のポートが第4のポートに連通し、第2のポートが第3のポートに連通する。   The four-way selector valve (37) switches between a first state (state indicated by a solid line in FIG. 4) and a second state (state indicated by a broken line in FIG. 4). In the four-way switching valve (37) in the first state, the first port communicates with the third port, and the second port communicates with the fourth port. On the other hand, in the four-way selector valve (37) in the second state, the first port communicates with the fourth port, and the second port communicates with the third port.

上記四路切換弁(37)が第1状態のとき、上記給気側モジュール(40a)の伝熱部材(46a)が蒸発部となり上記排気側モジュール(40b)の伝熱部材(46b)が凝縮部(放熱部)となって、冷凍サイクルが行われる。この結果、上記給気側モジュール(40a)内の液体吸収剤が上記蒸発部で冷却されて該液体吸収剤の水蒸気分圧が減少することにより、上記給気側モジュール(40a)が吸湿部を構成する。一方、上記排気側モジュール(40b)内の液体吸収剤が上記凝縮部(放熱部)で加熱されて該液体吸収剤の水蒸気分圧が増加することにより、上記排気側モジュール(40b)が放湿部を構成する。つまり、四路切換弁(37)が第1状態のときには、給気側モジュール(40a)の伝熱部材(46a)が、液体吸収剤を冷却する冷却部を構成し、排気側モジュール(40b)の伝熱部材(46b)が、液体吸収剤を加熱する加熱部を構成する。   When the four-way selector valve (37) is in the first state, the heat transfer member (46a) of the air supply side module (40a) becomes an evaporation section and the heat transfer member (46b) of the exhaust side module (40b) condenses. Part (heat dissipating part) and the refrigeration cycle is performed. As a result, the liquid absorbent in the air supply side module (40a) is cooled by the evaporation section and the water vapor partial pressure of the liquid absorbent is reduced, so that the air supply side module (40a) Configure. On the other hand, the liquid absorbent in the exhaust side module (40b) is heated by the condensing part (heat dissipating part) and the water vapor partial pressure of the liquid absorbent increases, so that the exhaust side module (40b) is dehumidified. Parts. That is, when the four-way selector valve (37) is in the first state, the heat transfer member (46a) of the air supply side module (40a) constitutes a cooling unit that cools the liquid absorbent, and the exhaust side module (40b). The heat transfer member (46b) constitutes a heating unit for heating the liquid absorbent.

一方、上記四路切換弁(37)が第2状態のとき、上記給気側モジュール(40a)の伝熱部材(46a)が凝縮部(放熱部)となり、上記排気側モジュール(40b)の伝熱部材(46b)が蒸発部となって冷凍サイクルが行われる。この結果、上記給気側モジュール(40a)が放湿部を構成し、上記排気側モジュール(40b)が吸湿部を構成する。つまり、四路切換弁(37)が第2状態のときには、給気側モジュール(40a)の伝熱部材(46a)が、液体吸収剤を加熱する加熱部を構成し、排気側モジュール(40b)の伝熱部材(46b)が、液体吸収剤を冷却する冷却部を構成する。   On the other hand, when the four-way switching valve (37) is in the second state, the heat transfer member (46a) of the air supply side module (40a) becomes a condensing part (heat dissipating part), and the heat transfer member (40b) is transferred to the exhaust side module (40b). The heat member (46b) serves as an evaporation section to perform a refrigeration cycle. As a result, the air supply side module (40a) constitutes a moisture releasing part, and the exhaust side module (40b) constitutes a moisture absorbing part. That is, when the four-way selector valve (37) is in the second state, the heat transfer member (46a) of the air supply side module (40a) constitutes a heating unit that heats the liquid absorbent, and the exhaust side module (40b) The heat transfer member (46b) constitutes a cooling unit for cooling the liquid absorbent.

−吸収剤回路−
図4に示すように、吸収剤回路(11)は、排気側モジュール(40b)内の吸収剤通路(41)(排気側流路(41b))と、給気側モジュール(40a)内の吸収剤通路(41)(給気側流路(41a))とが接続される閉回路である。吸収剤回路(11)には、1つのポンプ(12)が接続されている。ポンプ(12)は、吸収剤回路(11)の液体吸収剤を搬送するポンプ機構である。ポンプ(12)は、液体吸収剤の流量を調節可能な可変容量式のポンプで構成される。上述した四路切換弁(37)が第1状態になると、吸湿部側の給気側流路(41a)が吸湿路を構成し、放湿部側の排気側流路(41b)が放湿路を構成する。また、四路切換弁(37)が第2状態になると、吸湿部側の排気側流路(41b)が吸湿路を構成し、放湿部側の給気側流路(41a)が放湿路を構成する。
-Absorbent circuit-
As shown in FIG. 4, the absorbent circuit (11) includes an absorbent passage (41) (exhaust side flow path (41b)) in the exhaust side module (40b) and an absorption in the supply side module (40a). It is a closed circuit to which the agent passage (41) (supply side flow path (41a)) is connected. One pump (12) is connected to the absorbent circuit (11). The pump (12) is a pump mechanism that conveys the liquid absorbent in the absorbent circuit (11). The pump (12) is a variable displacement pump that can adjust the flow rate of the liquid absorbent. When the above-described four-way switching valve (37) is in the first state, the air supply side flow path (41a) on the moisture absorption section side constitutes a moisture absorption path, and the exhaust side flow path (41b) on the moisture release section side is dehumidified. Configure the road. Further, when the four-way switching valve (37) is in the second state, the exhaust side flow path (41b) on the moisture absorption section side constitutes a moisture absorption path, and the air supply side flow path (41a) on the moisture release section side is dehumidified. Configure the road.

同図に示すように、吸収剤回路(11)には、溶液熱交換器(90)が設けられている。溶液熱交換器(90)は、第1流路(90a)と第2流路(90b)とを有し、両者の流路(90a,90b)を流れる液体吸収剤を互いに熱交換させる。第1流路(90a)の流入端は、給気側流路(41a)の流出端と繋がり、第1流路(90a)の流出端は、排気側流路(41b)の流入端と繋がっている。第2流路(90b)の流入端は、排気側流路(41b)の流出端と繋がり、第2流路(90b)の流出端は、給気側流路(41a)の流入端と繋がっている。溶液熱交換器(90)は、「入れ替え運転」(詳細は後述する)において、放湿路(41b,41a)から吸湿路(41a,41b)へ向かう液体吸収剤と、吸湿路(41a,41b)から放湿路(41b,41a)へ向かう液体吸収剤とを互いに熱交換させる熱交換器を構成している。   As shown in the figure, the absorbent circuit (11) is provided with a solution heat exchanger (90). The solution heat exchanger (90) has a first flow path (90a) and a second flow path (90b), and the liquid absorbents flowing through both flow paths (90a, 90b) exchange heat with each other. The inflow end of the first flow path (90a) is connected to the outflow end of the supply side flow path (41a), and the outflow end of the first flow path (90a) is connected to the inflow end of the exhaust side flow path (41b). ing. The inflow end of the second flow path (90b) is connected to the outflow end of the exhaust side flow path (41b), and the outflow end of the second flow path (90b) is connected to the inflow end of the air supply side flow path (41a). ing. In the “replacement operation” (details will be described later), the solution heat exchanger (90) includes a liquid absorbent and a moisture absorption path (41a, 41b) from the moisture discharge path (41b, 41a) to the moisture absorption path (41a, 41b). ) To the moisture release path (41b, 41a) to form a heat exchanger that exchanges heat with each other.

溶液熱交換器(90)は、第1流路(90a)を流れる液体吸収剤と、第2流路(90b)を流れる液体吸収剤とが、互いに向かい合うように流れる対向流式である。つまり、溶液熱交換器(90)では、第1流路(90a)の流入部の液体吸収剤と、第2流路(90b)の流出部の液体吸収剤とが熱交換し、第1流路(90a)の流出部の液体吸収剤と、第2流路(90b)の流入部の液体吸収剤とが熱交換する。また、溶液熱交換器(90)の方式としては、2重管方式、多管円筒式、渦巻管式等の種々の方式が採用できる。   The solution heat exchanger (90) is a counter flow type in which the liquid absorbent flowing through the first flow path (90a) and the liquid absorbent flowing through the second flow path (90b) flow so as to face each other. That is, in the solution heat exchanger (90), the liquid absorbent at the inflow portion of the first flow path (90a) and the liquid absorbent at the outflow portion of the second flow path (90b) exchange heat, and the first flow The liquid absorbent at the outflow portion of the passage (90a) exchanges heat with the liquid absorbent at the inflow portion of the second flow passage (90b). Moreover, as a system of the solution heat exchanger (90), various systems such as a double pipe system, a multi-tube cylindrical system, and a spiral tube system can be adopted.

−センサ及びコントローラ−
本実施形態の調湿装置(10)は、給気湿度センサ(111)と外気湿度センサ(112)とを備えている。給気湿度センサ(111)は、室内へ供給される供給空気(SA)の相対湿度を検出する。外気湿度センサ(112)は、室外空気(OA)の相対湿度を検出する。なお、供給空気(SA)の温度を検出し、この温度と供給空気(SA)の相対湿度とに基づいて、供給空気(SA)の絶対湿度を求めるようにしてもよい。また、室外空気(OA)の温度を検出し、この温度と室外空気(OA)の相対湿度とに基づいて、室外空気(OA)の絶対湿度を求めるようにしてもよい。
-Sensors and controllers-
The humidity control apparatus (10) of the present embodiment includes an air supply humidity sensor (111) and an outside air humidity sensor (112). The supply air humidity sensor (111) detects the relative humidity of the supply air (SA) supplied into the room. The outdoor air humidity sensor (112) detects the relative humidity of the outdoor air (OA). Note that the temperature of the supply air (SA) may be detected, and the absolute humidity of the supply air (SA) may be obtained based on this temperature and the relative humidity of the supply air (SA). Further, the temperature of the outdoor air (OA) may be detected, and the absolute humidity of the outdoor air (OA) may be obtained based on this temperature and the relative humidity of the outdoor air (OA).

コントローラ(100)には、各種のセンサ(111,112)の検出値が入力される。コントローラ(100)には、リモコン等から入力されるユーザーの運転指令に応じて、除湿運転と加湿運転とを切り換える制御を行う。コントローラ(100)は、除湿運転及び加湿運転において、第1運転である「ポンプ停止運転」と、第2運転である「入れ替え運転」とを交互に繰り返す制御を行う。詳細は後述するが、「ポンプ停止運転」はポンプ(12)を停止し且つ冷媒回路(35)で冷凍サイクルを行い空気を調湿する運転である。また、「入れ替え運転」は、給気側モジュール(40a)と排気側モジュール(40b)内の各液体吸収剤を相互に入れ替えるようにポンプ(12)を動作させる運転である。   Detection values of various sensors (111, 112) are input to the controller (100). The controller (100) performs control for switching between the dehumidifying operation and the humidifying operation in accordance with a user operation command input from a remote controller or the like. In the dehumidifying operation and the humidifying operation, the controller (100) performs control to alternately repeat the “pump stop operation” that is the first operation and the “replacement operation” that is the second operation. Although the details will be described later, the “pump stop operation” is an operation in which the pump (12) is stopped and the refrigerant circuit (35) performs a refrigeration cycle to adjust the air humidity. Further, the “replacement operation” is an operation for operating the pump (12) so that the liquid absorbents in the air supply side module (40a) and the exhaust side module (40b) are interchanged with each other.

本実施形態のコントローラ(100)は、設定部(101)と判定部(102)と運転制御部(103)とを有している。   The controller (100) of the present embodiment includes a setting unit (101), a determination unit (102), and an operation control unit (103).

設定部(101)には、「入れ替え運転」の実行時間が設定される。この「入れ替え運転」の実行時間は、給気側モジュール(40a)と排気側モジュール(40b)の各液体吸収剤を相互に入れ替えることができる程度の時間が設定される。具体的に、例えばこの実行時間は、給気側モジュール(40a)と排気側モジュール(40b)における吸収液の保有量、入れ替え運転時のポンプ(12)の流量、吸収剤回路(11)の配管長等に基づいて決定される。   The execution time of “replacement operation” is set in the setting unit (101). The execution time of the “replacement operation” is set to such a time that the liquid absorbents of the supply side module (40a) and the exhaust side module (40b) can be replaced with each other. Specifically, for example, this execution time includes the amount of absorption liquid held in the supply side module (40a) and the exhaust side module (40b), the flow rate of the pump (12) during the replacement operation, the piping of the absorbent circuit (11) It is determined based on the length.

判定部(102)は、「ポンプ停止運転」時において、調湿装置(10)の調湿能力が低下したことを判定するものである。本実施形態の判定部(102)は、「ポンプ停止運転」時において、給気湿度センサ(111)の検出値(供給空気(SA)の湿度)と外気湿度センサ(112)の検出値(室外空気(OA)の湿度)との差(湿度差Δh)を算出し、この湿度差Δhに基づいて、調湿能力の低下を判定する。   The determination unit (102) determines that the humidity control capability of the humidity control apparatus (10) has decreased during the “pump stop operation”. In the “pump stop operation”, the determination unit (102) of the present embodiment is configured to detect the detection value (supply air (SA) humidity) of the supply air humidity sensor (111) and the detection value of the outdoor air humidity sensor (112) (outdoor The difference (humidity difference Δh) with respect to the humidity of air (OA) is calculated, and a decrease in humidity control capacity is determined based on the humidity difference Δh.

運転制御部(103)は、「ポンプ停止運転」と「入れ替え運転」との切換の制御を行うものである。具体的に、運転制御部(103)は、ポンプ(12)を停止させ且つ圧縮機(36)を運転させる「ポンプ停止運転」と、ポンプ(12)を運転させ且つ圧縮機(36)を運転させる「入れ替え運転」とを切り換えるように構成されている。本実施形態では、「ポンプ停止運転」時において、判定部(102)が、上記湿度差Δhに基づいて除湿能力又は加湿能力が低下したと判定すると、運転制御部(103)が、「ポンプ停止運転」から「入れ替え運転」に切り換える制御を行う。   The operation control unit (103) controls switching between “pump stop operation” and “replacement operation”. Specifically, the operation control unit (103) stops the pump (12) and operates the compressor (36), and operates the pump (12) and operates the compressor (36). It is configured to switch between “replacement operation”. In the present embodiment, when the determination unit (102) determines that the dehumidifying capacity or the humidifying capacity has decreased based on the humidity difference Δh during the “pump stop operation”, the operation control unit (103) Control to switch from “operation” to “replacement operation”.

〈調湿装置の運転動作〉
次に、実施形態1に係る調湿装置(10)の運転動作について説明する。まず、除湿運転について説明した後で加湿運転について説明する。除湿運転は、夏季等において、室外空気の湿度及び温度が高い条件下で運転される。また、加湿運転は、冬季等において、室外空気の湿度及び温度が低い条件下で運転される。
<Operation of humidity control device>
Next, the operation of the humidity control apparatus (10) according to the first embodiment will be described. First, after describing the dehumidifying operation, the humidifying operation will be described. The dehumidifying operation is performed under conditions where the humidity and temperature of outdoor air are high in summer and the like. Further, the humidification operation is performed under conditions where the humidity and temperature of the outdoor air are low, such as in winter.

《除湿運転》
図4に示すように、除湿運転では、コントローラ(100)により、四路切換弁(37)が第1状態に設定され、圧縮機(36)が運転される。これにより、除湿運転では、圧縮機(36)で圧縮された冷媒が、排気側モジュール(40b)の伝熱部材(46b)で放熱し、膨張弁(38)で減圧される。減圧後の冷媒は、給気側モジュール(40a)の伝熱部材(46a)で蒸発し、圧縮機(36)に吸入される。つまり、除湿運転では、給気側モジュール(40a)の伝熱部材(46a)が蒸発部となり、排気側モジュール(40b)の伝熱部材(46b)が凝縮部となる。換言すると、吸湿部となる給気側モジュール(40a)の給気側流路(41a)が吸湿路となり、放湿部となる排気側モジュール(40b)の排気側流路(41b)が放湿路となる。
《Dehumidifying operation》
As shown in FIG. 4, in the dehumidifying operation, the controller (100) sets the four-way switching valve (37) to the first state and operates the compressor (36). Thereby, in the dehumidifying operation, the refrigerant compressed by the compressor (36) dissipates heat by the heat transfer member (46b) of the exhaust side module (40b) and is decompressed by the expansion valve (38). The decompressed refrigerant evaporates in the heat transfer member (46a) of the supply side module (40a) and is sucked into the compressor (36). That is, in the dehumidifying operation, the heat transfer member (46a) of the air supply side module (40a) serves as an evaporation unit, and the heat transfer member (46b) of the exhaust side module (40b) serves as a condensing unit. In other words, the air supply side flow path (41a) of the air supply side module (40a) serving as the moisture absorption section becomes a moisture absorption path, and the exhaust side flow path (41b) of the exhaust side module (40b) serving as the moisture release section is dehumidified. It becomes a road.

また、除湿運転では、給気ファン(27)と排気ファン(28)とが運転される。これにより、室外空気(OA)が給気通路(25)に取り込まれ、室内空気(RA)が排気通路(26)に取り込まれる。室外空気(OA)は、給気側モジュール(40a)を通過して除湿された後、室内空間へ供給空気(SA)として供給される。室内空気(RA)は、排気側モジュール(40b)を通過して放湿された後、室外空間へ排出空気(EA)として排出される。   In the dehumidifying operation, the air supply fan (27) and the exhaust fan (28) are operated. As a result, outdoor air (OA) is taken into the air supply passage (25) and indoor air (RA) is taken into the exhaust passage (26). The outdoor air (OA) passes through the air supply module (40a) and is dehumidified, and then supplied to the indoor space as supply air (SA). The room air (RA) passes through the exhaust side module (40b) and is dehumidified, and then is discharged as exhaust air (EA) to the outdoor space.

このように冷媒回路(35)及びファン(27,28)が制御される除湿運転では、コントローラ(100)によって、「ポンプ停止運転」と「入れ替え運転」とが交互に切り換えられる。   In the dehumidifying operation in which the refrigerant circuit (35) and the fans (27, 28) are controlled in this way, the “pump stop operation” and the “replacement operation” are alternately switched by the controller (100).

−ポンプ停止運転−
除湿運転時のポンプ停止運転では、給気側モジュール(40a)と排気側モジュール(40b)とにそれぞれ液体吸収剤が溜まった状態でポンプ(12)が停止される。このため、ポンプ停止運転では、吸収剤回路(11)で液体吸収剤が循環することはない。ポンプ停止運転の開始時には、吸湿路となる給気側流路(41a)に高濃度の液体吸収剤が溜まった状態となり、放湿路となる排気側流路(41b)に低濃度の液体吸収剤が溜まった状態となる。
-Pump stop operation-
In the pump stop operation during the dehumidifying operation, the pump (12) is stopped in a state where the liquid absorbent is accumulated in the supply side module (40a) and the exhaust side module (40b). For this reason, in the pump stop operation, the liquid absorbent does not circulate in the absorbent circuit (11). At the start of pump stop operation, high-concentration liquid absorbent has accumulated in the supply-side flow path (41a) that becomes the moisture absorption path, and low-concentration liquid absorption in the exhaust-side flow path (41b) that becomes the moisture release path The agent will be in a state of accumulation.

給気側モジュール(40a)には、上述のように室外空気(OA)が通過している。給気側モジュール(40a)では、伝熱部材(蒸発部(46a))によって液体吸収剤が冷却され、この液体吸収剤の水蒸気分圧が低くなっている。このため、給気側モジュール(40a)では、室外空気中の水蒸気が透湿膜(62)を通過して液体吸収剤に吸収されていく。この際に生じる吸収熱は、蒸発部(46a)での冷媒の蒸発に利用される。給気側モジュール(40a)で吸湿された空気は、室内空間へ供給される。   As described above, outdoor air (OA) passes through the air supply side module (40a). In the supply side module (40a), the liquid absorbent is cooled by the heat transfer member (evaporating section (46a)), and the water vapor partial pressure of the liquid absorbent is low. For this reason, in the supply side module (40a), water vapor in the outdoor air passes through the moisture permeable membrane (62) and is absorbed by the liquid absorbent. The absorbed heat generated at this time is used for the evaporation of the refrigerant in the evaporation section (46a). The air absorbed by the supply side module (40a) is supplied to the indoor space.

排気側モジュール(40b)には、上述のように室内空気(RA)が通過している。排気側モジュール(40b)では、伝熱部材(凝縮部(46b))によって液体吸収剤が加熱され、この液体吸収剤の水蒸気分圧が高くなっている。このため、排気側モジュール(40b)では、液体吸収剤中の水蒸気が透湿膜(62)を通過して空気に放出されていく。排気側モジュール(40b)で放湿された空気は、室外空間へ排出される。   The indoor air (RA) passes through the exhaust side module (40b) as described above. In the exhaust side module (40b), the liquid absorbent is heated by the heat transfer member (condensing section (46b)), and the water vapor partial pressure of the liquid absorbent is high. For this reason, in the exhaust side module (40b), the water vapor in the liquid absorbent passes through the moisture permeable membrane (62) and is released into the air. The air released by the exhaust side module (40b) is discharged to the outdoor space.

−ポンプ停止運転時の判定動作−
除湿運転において、上記のようにポンプ停止運転を継続して行うと、給気側モジュール(40a)の給気側流路(41a)の液体吸収剤の濃度が徐々に低くなっていく。同時に、排気側モジュール(40b)の排気側流路(41b)の液体吸収剤の濃度が徐々に高くなっていく。給気側流路(41a)の液体吸収剤の濃度が低くなると、給気側モジュール(40a)での空気の除湿能力が低下してしまう。そこで、ポンプ停止運転では、このような除湿能力の低下を検出し、これを検出することで、ポンプ停止運転から入れ替え運転へ切り換えるようにしている。
-Judgment operation during pump stop operation-
In the dehumidifying operation, if the pump stop operation is continuously performed as described above, the concentration of the liquid absorbent in the air supply side channel (41a) of the air supply side module (40a) gradually decreases. At the same time, the concentration of the liquid absorbent in the exhaust side flow path (41b) of the exhaust side module (40b) gradually increases. When the concentration of the liquid absorbent in the air supply side flow path (41a) is lowered, the air dehumidifying ability in the air supply side module (40a) is lowered. Therefore, in the pump stop operation, such a decrease in the dehumidifying capability is detected, and by detecting this, the pump stop operation is switched to the replacement operation.

具体的に、「ポンプ停止運転」時には、給気湿度センサ(111)で検出された供給空気(SA)の湿度と、外気湿度センサ(112)で検出された室外空気(OA)の湿度とがコントローラ(100)に適宜入力される。判定部(102)は、これらの検出値の差(湿度差Δh)が所定値よりも小さくなると、除湿能力が低下したと判定する。判定部(102)が除湿能力の低下を判定すると、運転制御部(103)は、「ポンプ停止運転」から「入れ替え運転」へと運転を切り換える。   Specifically, during the “pump stop operation”, the humidity of the supply air (SA) detected by the supply air humidity sensor (111) and the humidity of the outdoor air (OA) detected by the outdoor air humidity sensor (112) Input to the controller (100) as appropriate. The determination unit (102) determines that the dehumidifying ability has decreased when the difference between these detection values (humidity difference Δh) becomes smaller than a predetermined value. When the determination unit (102) determines that the dehumidifying capacity is reduced, the operation control unit (103) switches the operation from “pump stop operation” to “replacement operation”.

−入れ替え運転−
除湿運転時の「入れ替え運転」では、冷媒回路(35)及びファン(27,28)が上記の「ポンプ停止運転」と同様に制御される。一方、「入れ替え運転」では、ポンプ(12)が所定時間に亘って運転される。このポンプ(12)の運転時間は、設定部(101)に設定された実行時間に相当する。また、ポンプ(12)の吐出量(吸収剤回路(11)での液体吸収剤の循環量)は、10L/min程度に設定される。
-Replacement operation-
In the “replacement operation” during the dehumidifying operation, the refrigerant circuit (35) and the fans (27, 28) are controlled in the same manner as the “pump stop operation”. On the other hand, in the “replacement operation”, the pump (12) is operated over a predetermined time. The operation time of the pump (12) corresponds to the execution time set in the setting unit (101). Further, the discharge amount of the pump (12) (the circulation amount of the liquid absorbent in the absorbent circuit (11)) is set to about 10 L / min.

除湿運転時の「入れ替え運転」の開始直前には、給気側モジュール(40a)の給気側流路(41a)に比較的低濃度の液体吸収剤が溜まっている。また、この給気側流路(41a)の液体吸収剤は、蒸発部(46a)によって冷却されることで、比較的低温となっている(例えば15℃〜20℃の範囲)。一方、排気側モジュール(40b)の排気側流路(41b)には、比較的高濃度の液体吸収剤が溜まっている。また、この排気側流路(41b)の液体吸収剤は、凝縮部(46b)によって加熱されることで、比較的高温となっている(例えば45℃〜50℃の範囲)。この状態からポンプ(12)が運転されると、給気側流路(41a)にある低濃度且つ低温の液体吸収剤は、排気側モジュール(40b)側へ送られ、同時に排気側流路(41b)にある高濃度且つ高温の液体吸収剤は、給気側モジュール(40a)側へ送られる(図4の破線の矢印を参照)。   Immediately before the start of the “replacement operation” during the dehumidifying operation, a relatively low concentration of liquid absorbent is accumulated in the air supply side channel (41a) of the air supply side module (40a). Further, the liquid absorbent in the air supply side flow path (41a) is cooled by the evaporating section (46a), and thus has a relatively low temperature (for example, a range of 15 ° C. to 20 ° C.). On the other hand, a relatively high concentration of liquid absorbent is accumulated in the exhaust side flow path (41b) of the exhaust side module (40b). Further, the liquid absorbent in the exhaust side channel (41b) is heated by the condensing part (46b), and thus has a relatively high temperature (for example, in a range of 45 ° C. to 50 ° C.). When the pump (12) is operated from this state, the low-concentration and low-temperature liquid absorbent in the supply-side flow path (41a) is sent to the exhaust-side module (40b) side, and at the same time, the exhaust-side flow path ( The high-concentration and high-temperature liquid absorbent in 41b) is sent to the supply-side module (40a) side (see the broken arrow in FIG. 4).

給気側流路(41a)を流出した液体吸収剤は、溶液熱交換器(90)の第1流路(90a)を流れる。また、排気側流路(41b)を流出した液体吸収剤は、溶液熱交換器(90)の第2流路(90b)を流れる。溶液熱交換器(90)では、第1流路(90a)を流れる液体吸収剤と、第2流路(90b)を流れる液体吸収剤とが、互いに向かい合うように流れて熱交換する。これにより、第1流路(90a)を流れる液体吸収剤が、第2流路(90b)を流れる液体吸収剤から吸熱する。その結果、溶液熱交換器(90)では、第1流路(90a)を流れる液体吸収剤が所定の温度まで加熱され、第2流路(90b)を流れる液体吸収剤が所定の温度まで冷却される。   The liquid absorbent that has flowed out of the air supply side channel (41a) flows through the first channel (90a) of the solution heat exchanger (90). Further, the liquid absorbent that has flowed out of the exhaust side flow path (41b) flows through the second flow path (90b) of the solution heat exchanger (90). In the solution heat exchanger (90), the liquid absorbent flowing through the first flow path (90a) and the liquid absorbent flowing through the second flow path (90b) flow so as to face each other to exchange heat. Thereby, the liquid absorbent flowing through the first flow path (90a) absorbs heat from the liquid absorbent flowing through the second flow path (90b). As a result, in the solution heat exchanger (90), the liquid absorbent flowing through the first flow path (90a) is heated to a predetermined temperature, and the liquid absorbent flowing through the second flow path (90b) is cooled to the predetermined temperature. Is done.

第1流路(90a)で加熱された低濃度の液体吸収剤は、排気側モジュール(40b)の排気側流路(41b)へ送られる。第2流路(90b)で冷却された高濃度の液体吸収剤は、給気側モジュール(40a)の給気側流路(41a)へ送られる。以上のようにして、吸収剤回路(11)では、給気側モジュール(40a)内の液体吸収剤と、排気側モジュール(40b)内の液体吸収剤とが、相互に入れ替わるようにポンプ(12)が運転される。   The low concentration liquid absorbent heated in the first flow path (90a) is sent to the exhaust side flow path (41b) of the exhaust side module (40b). The high concentration liquid absorbent cooled in the second flow path (90b) is sent to the air supply side flow path (41a) of the air supply side module (40a). As described above, in the absorbent circuit (11), the liquid absorbent in the supply side module (40a) and the liquid absorbent in the exhaust side module (40b) are exchanged with each other. ) Is driven.

「入れ替え運転」が開始されてから設定部(101)に設定された時間が経過すると、再び「ポンプ停止運転」に切り換わり、ポンプ(12)が停止される。この状態では、排気側モジュール(40b)内にあった高濃度の液体吸収剤が、給気側モジュール(40a)内に位置し、給気側モジュール(40a)内にあった低濃度の液体吸収剤が、排気側モジュール(40b)内に位置する。このため、給気側モジュール(40a)では、室外空気中の水蒸気が透湿膜(62)を通過して液体吸収剤に吸収される。また、排気側モジュール(40b)では、液体吸収剤中の水蒸気が透湿膜(62)を通過して室内空気へ放出される。   When the time set in the setting unit (101) has elapsed since the start of the “replacement operation”, the operation is switched again to the “pump stop operation”, and the pump (12) is stopped. In this state, the high concentration liquid absorbent that was in the exhaust side module (40b) is located in the supply side module (40a), and the low concentration liquid absorbent that was in the supply side module (40a) is absorbed. The agent is located in the exhaust side module (40b). For this reason, in the supply side module (40a), water vapor in the outdoor air passes through the moisture permeable membrane (62) and is absorbed by the liquid absorbent. In the exhaust module (40b), the water vapor in the liquid absorbent passes through the moisture permeable membrane (62) and is released into the room air.

また、上述した入れ替え運転において、給気側モジュール(40a)に送られた液体吸収剤は、溶液熱交換器(90)において冷却され、排気側モジュール(40b)に送られた液体吸収剤は、溶液熱交換器(90)において加熱されている。このため、その後のポンプ停止運転では、給気側モジュール(40a)における吸湿能力(除湿能力)や、排気側モジュール(40b)における放湿能力が増大する。   In the above-described replacement operation, the liquid absorbent sent to the air supply side module (40a) is cooled in the solution heat exchanger (90), and the liquid absorbent sent to the exhaust side module (40b) is Heated in a solution heat exchanger (90). For this reason, in the subsequent pump stop operation, the moisture absorption capability (dehumidification capability) in the supply side module (40a) and the moisture release capability in the exhaust side module (40b) increase.

《加湿運転》
図5に示すように、加湿運転では、コントローラ(100)により、四路切換弁(37)が第2状態に設定され、圧縮機(36)が運転される。これにより、加湿運転では、圧縮機(36)で圧縮された冷媒が、給気側モジュール(40a)の伝熱部材(46a)で放熱し、膨張弁(38)で減圧される。減圧後の冷媒は、排気側モジュール(40b)の伝熱部材(46b)で蒸発し、圧縮機(36)に吸入される。つまり、加湿運転では、給気側モジュール(40a)の伝熱部材(46a)が凝縮部となり、排気側モジュール(40b)の伝熱部材(46b)が蒸発部となる。換言すると、吸湿部となる排気側モジュール(40b)の排気側流路(41b)が吸湿路となり、放湿部となる給気側モジュール(40a)の給気側流路(41a)が放湿路となる。
《Humidification operation》
As shown in FIG. 5, in the humidification operation, the controller (100) sets the four-way switching valve (37) to the second state, and the compressor (36) is operated. Thereby, in the humidification operation, the refrigerant compressed by the compressor (36) dissipates heat by the heat transfer member (46a) of the supply side module (40a) and is decompressed by the expansion valve (38). The decompressed refrigerant evaporates at the heat transfer member (46b) of the exhaust module (40b) and is sucked into the compressor (36). That is, in the humidification operation, the heat transfer member (46a) of the supply side module (40a) serves as a condensing unit, and the heat transfer member (46b) of the exhaust side module (40b) serves as an evaporation unit. In other words, the exhaust-side flow path (41b) of the exhaust-side module (40b) serving as the moisture-absorbing section serves as a moisture-absorbing path, and the supply-side flow path (41a) of the supply-side module (40a) serving as the moisture-releasing section is dehumidified. It becomes a road.

また、加湿運転では、給気ファン(27)と排気ファン(28)とが運転される。これにより、室外空気(OA)が給気通路(25)に取り込まれ、室内空気(RA)が排気通路(26)に取り込まれる。室外空気(OA)は、給気側モジュール(40a)を通過して加湿された後、室内空間へ供給空気(SA)として供給される。室内空気(RA)は、排気側モジュール(40b)を通過して吸湿された後、室外空間へ排出空気(EA)として排出される。   In the humidification operation, the air supply fan (27) and the exhaust fan (28) are operated. As a result, outdoor air (OA) is taken into the air supply passage (25) and indoor air (RA) is taken into the exhaust passage (26). The outdoor air (OA) passes through the air supply module (40a) and is humidified, and then supplied to the indoor space as supply air (SA). The room air (RA) passes through the exhaust side module (40b) and is absorbed, and then discharged to the outdoor space as exhaust air (EA).

このように冷媒回路(35)及びファン(27,28)が制御される加湿運転では、コントローラ(100)によって、「ポンプ停止運転」と「入れ替え運転」とが交互に切り換えられる。   In the humidification operation in which the refrigerant circuit (35) and the fans (27, 28) are controlled as described above, the “pump stop operation” and the “replacement operation” are alternately switched by the controller (100).

−ポンプ停止運転−
加湿運転時のポンプ停止運転では、給気側モジュール(40a)と排気側モジュール(40b)とにそれぞれ液体吸収剤が溜まった状態でポンプ(12)が停止される。このため、ポンプ停止運転では、吸収剤回路(11)で液体吸収剤が循環することはない。ポンプ停止運転の開始時には、放湿路となる給気側流路(41a)に低濃度の液体吸収剤が溜まった状態となり、吸湿路となる排気側流路(41b)に高濃度の液体吸収剤が溜まった状態となる。
-Pump stop operation-
In the pump stop operation during the humidifying operation, the pump (12) is stopped in a state where the liquid absorbent is accumulated in the supply side module (40a) and the exhaust side module (40b). For this reason, in the pump stop operation, the liquid absorbent does not circulate in the absorbent circuit (11). At the start of pump stop operation, a low-concentration liquid absorbent accumulates in the supply-side flow path (41a) that becomes the moisture release path, and a high-concentration liquid absorption in the exhaust-side flow path (41b) that becomes the moisture absorption path The agent will be in a state of accumulation.

給気側モジュール(40a)には、上述のように室外空気(OA)が通過している。給気側モジュール(40a)では、伝熱部材(凝縮部(46a))によって液体吸収剤が加熱され、この液体吸収剤の水蒸気分圧が高くなっている。このため、給気側モジュール(40a)では、液体吸収剤中の水蒸気が透湿膜(62)を通過して室外空気へ放出される。給気側モジュール(40a)で加湿された空気は、室内空間へ供給される。   As described above, outdoor air (OA) passes through the air supply side module (40a). In the supply side module (40a), the liquid absorbent is heated by the heat transfer member (condensing section (46a)), and the water vapor partial pressure of the liquid absorbent is high. For this reason, in the air supply side module (40a), water vapor in the liquid absorbent passes through the moisture permeable membrane (62) and is released to the outdoor air. The air humidified by the supply side module (40a) is supplied to the indoor space.

排気側モジュール(40b)には、上述のように室内空気(RA)が通過している。排気側モジュール(40b)では、伝熱部材(蒸発部(46b))によって液体吸収剤が冷却され、この液体吸収剤の水蒸気分圧が低くなっている。このため、排気側モジュール(40b)では、室内空気中の水蒸気が透湿膜(62)を通過して液体吸収剤に吸収される。排気側モジュール(40b)で吸湿された空気は、室外空間へ排出される。   The indoor air (RA) passes through the exhaust side module (40b) as described above. In the exhaust side module (40b), the liquid absorbent is cooled by the heat transfer member (evaporating section (46b)), and the water vapor partial pressure of the liquid absorbent is low. For this reason, in the exhaust side module (40b), water vapor in the room air passes through the moisture permeable membrane (62) and is absorbed by the liquid absorbent. The air absorbed by the exhaust side module (40b) is discharged to the outdoor space.

−ポンプ停止運転時の判定動作−
加湿運転において、上記のようにポンプ停止運転を継続して行うと、給気側モジュール(40a)の給気側流路(41a)の液体吸収剤の濃度が徐々に高くなっていく。同時に、排気側モジュール(40b)の排気側流路(41b)の液体吸収剤の濃度が徐々に低くなっていく。給気側流路(41a)の液体吸収剤の濃度が高くなると、給気側モジュール(40a)での空気の加湿能力が低下してしまう。そこで、ポンプ停止運転では、このような加湿能力の低下を検出し、これを検出することで、ポンプ停止運転から入れ替え運転へ切り換えるようにしている。
-Judgment operation during pump stop operation-
In the humidification operation, when the pump stop operation is continuously performed as described above, the concentration of the liquid absorbent in the supply side channel (41a) of the supply side module (40a) gradually increases. At the same time, the concentration of the liquid absorbent in the exhaust side flow path (41b) of the exhaust side module (40b) gradually decreases. When the concentration of the liquid absorbent in the supply side flow path (41a) increases, the air humidification capability in the supply side module (40a) decreases. Therefore, in the pump stop operation, such a decrease in the humidifying capacity is detected, and by detecting this, the pump stop operation is switched to the replacement operation.

具体的に、「ポンプ停止運転」時には、給気湿度センサ(111)で検出された供給空気(SA)の湿度と、外気湿度センサ(112)で検出された室外空気(OA)の湿度とがコントローラ(100)に適宜入力される。判定部(102)は、これらの検出値の差(湿度差Δh)が所定値よりも小さくなると、加湿能力が低下したと判定する。判定部(102)が加湿能力の低下を判定すると、運転制御部(103)は、「ポンプ停止運転」から「入れ替え運転」へと運転を切り換える。   Specifically, during the “pump stop operation”, the humidity of the supply air (SA) detected by the supply air humidity sensor (111) and the humidity of the outdoor air (OA) detected by the outdoor air humidity sensor (112) Input to the controller (100) as appropriate. The determination unit (102) determines that the humidification ability has decreased when the difference between these detection values (humidity difference Δh) is smaller than a predetermined value. When the determination unit (102) determines that the humidification capacity is reduced, the operation control unit (103) switches the operation from “pump stop operation” to “replacement operation”.

−入れ替え運転−
加湿運転時の「入れ替え運転」では、冷媒回路(35)及びファン(27,28)が上記の「ポンプ停止運転」と同様に制御される。一方、「入れ替え運転」では、ポンプ(12)が所定時間に亘って運転される。このポンプ(12)の運転時間は、設定部(101)に設定された実行時間に相当する。また、ポンプ(12)の吐出量(吸収剤回路(11)での液体吸収剤の循環量)は、10L/min程度に設定される。
-Replacement operation-
In the “replacement operation” during the humidification operation, the refrigerant circuit (35) and the fans (27, 28) are controlled in the same manner as the “pump stop operation”. On the other hand, in the “replacement operation”, the pump (12) is operated over a predetermined time. The operation time of the pump (12) corresponds to the execution time set in the setting unit (101). Further, the discharge amount of the pump (12) (the circulation amount of the liquid absorbent in the absorbent circuit (11)) is set to about 10 L / min.

加湿運転時の「入れ替え運転」の開始直前には、給気側モジュール(40a)の給気側流路(41a)に比較的高濃度の液体吸収剤が溜まっている。また、この給気側流路(41a)の液体吸収剤は、凝縮部(46a)によって加熱されることで、比較的高温となっている(例えば35℃〜40℃の範囲)。一方、排気側モジュール(40b)の排気側流路(41b)には、比較的低濃度の液体吸収剤が溜まっている。この排気側流路(41b)の液体吸収剤は、蒸発部(46b)によって冷却されることで、比較的低温となっている(例えば0℃〜5℃の範囲)。この状態からポンプ(12)が運転されると、給気側流路(41a)にある高濃度の液体吸収剤は、排気側モジュール(40b)側へ送られ、同時に排気側流路(41b)にある低濃度の液体吸収剤は、給気側モジュール(40a)側へ送られる(図5の破線の矢印を参照)。   Immediately before the start of the “replacement operation” during the humidifying operation, a relatively high concentration of liquid absorbent has accumulated in the air supply side flow path (41a) of the air supply side module (40a). Further, the liquid absorbent in the supply side channel (41a) is heated by the condensing part (46a), and thus has a relatively high temperature (for example, in a range of 35 ° C. to 40 ° C.). On the other hand, a relatively low concentration of liquid absorbent is accumulated in the exhaust side flow path (41b) of the exhaust side module (40b). The liquid absorbent in the exhaust side channel (41b) is cooled by the evaporating section (46b), and thus has a relatively low temperature (for example, in the range of 0 ° C. to 5 ° C.). When the pump (12) is operated from this state, the high-concentration liquid absorbent in the air supply side channel (41a) is sent to the exhaust side module (40b) side and at the same time the exhaust side channel (41b) The liquid absorbent having a low concentration is sent to the supply side module (40a) side (see the broken line arrow in FIG. 5).

給気側流路(41a)を流出した液体吸収剤は、溶液熱交換器(90)の第1流路(90a)を流れる。また、排気側流路(41b)を流出した液体吸収剤は、溶液熱交換器(90)の第2流路(90b)を流れる。溶液熱交換器(90)では、第1流路(90a)を流れる液体吸収剤と、第2流路(90b)を流れる液体吸収剤とが、互いに向かい合うように流れて熱交換する。これにより、第2流路(90b)を流れる液体吸収剤が、第1流路(90a)を流れる液体吸収剤から吸熱する。その結果、溶液熱交換器(90)では、第2流路(90b)を流れる液体吸収剤が所定の温度まで加熱され、第1流路(90a)を流れる液体吸収剤が所定の温度まで冷却される。   The liquid absorbent that has flowed out of the air supply side channel (41a) flows through the first channel (90a) of the solution heat exchanger (90). Further, the liquid absorbent that has flowed out of the exhaust side flow path (41b) flows through the second flow path (90b) of the solution heat exchanger (90). In the solution heat exchanger (90), the liquid absorbent flowing through the first flow path (90a) and the liquid absorbent flowing through the second flow path (90b) flow so as to face each other to exchange heat. Thereby, the liquid absorbent flowing through the second flow path (90b) absorbs heat from the liquid absorbent flowing through the first flow path (90a). As a result, in the solution heat exchanger (90), the liquid absorbent flowing through the second flow path (90b) is heated to a predetermined temperature, and the liquid absorbent flowing through the first flow path (90a) is cooled to the predetermined temperature. Is done.

第2流路(90b)で加熱された低濃度の液体吸収剤は、給気側モジュール(40a)の給気側流路(41a)へ送られる。第1流路(90a)で冷却された高濃度の液体吸収剤は、排気側モジュール(40b)の排気側流路(41b)へ送られる。以上のようにして、吸収剤回路(11)では、給気側モジュール(40a)内の液体吸収剤と、排気側モジュール(40b)内の液体吸収剤とが、相互に入れ替わるようにポンプ(12)が運転される。   The low concentration liquid absorbent heated in the second flow path (90b) is sent to the air supply side flow path (41a) of the air supply side module (40a). The high concentration liquid absorbent cooled in the first flow path (90a) is sent to the exhaust side flow path (41b) of the exhaust side module (40b). As described above, in the absorbent circuit (11), the liquid absorbent in the supply side module (40a) and the liquid absorbent in the exhaust side module (40b) are exchanged with each other. ) Is driven.

「入れ替え運転」が開始されてから設定部(101)に設定された時間が経過すると、再び「ポンプ停止運転」に切り換わり、ポンプ(12)が停止される。この状態では、排気側モジュール(40b)内にあった低濃度の液体吸収剤が、給気側モジュール(40a)内に位置し、給気側モジュール(40a)内にあった高濃度の液体吸収剤が、排気側モジュール(40b)内に位置する。このため、給気側モジュール(40a)では、液体吸収剤中の水蒸気が透湿膜(62)を通過して室外空気へ放出される。また、排気側モジュール(40b)では、室内空気中の水蒸気が透湿膜(62)を通過して液体吸収剤へ吸収される。   When the time set in the setting unit (101) has elapsed since the start of the “replacement operation”, the operation is switched again to the “pump stop operation”, and the pump (12) is stopped. In this state, the low concentration liquid absorbent that was in the exhaust side module (40b) is located in the supply side module (40a), and the high concentration liquid absorbent that was in the supply side module (40a) is absorbed. The agent is located in the exhaust side module (40b). For this reason, in the air supply side module (40a), water vapor in the liquid absorbent passes through the moisture permeable membrane (62) and is released to the outdoor air. In the exhaust module (40b), water vapor in the room air passes through the moisture permeable membrane (62) and is absorbed by the liquid absorbent.

また、上述した入れ替え運転において、給気側モジュール(40a)に送られた液体吸収剤は、溶液熱交換器(90)において加熱され、排気側モジュール(40b)に送られた液体吸収剤は、溶液熱交換器(90)において冷却されている。このため、その後のポンプ停止運転では、給気側モジュール(40a)における放湿能力(加湿能力)や、排気側モジュール(40b)における吸湿能力が増大する。   In the replacement operation described above, the liquid absorbent sent to the air supply side module (40a) is heated in the solution heat exchanger (90), and the liquid absorbent sent to the exhaust side module (40b) is It is cooled in the solution heat exchanger (90). For this reason, in the subsequent pump stop operation, the moisture release capability (humidification capability) in the supply side module (40a) and the moisture absorption capability in the exhaust side module (40b) increase.

−実施形態1の効果−
上述した実施形態1の除湿運転では、ポンプ停止運転(第1運転)において、給気側モジュール(40a)と排気側モジュール(40b)との内部にそれぞれ液体吸収剤を溜めた状態とし、給気側流路(41a)の液体吸収剤を蒸発部(46a)で冷却し且つ排気側流路(41b)の液体吸収剤を凝縮部(46b)で加熱している。このため、この除湿運転のポンプ停止運転では、吸収剤回路(11)の液体吸収剤を循環させる必要がなく、ポンプ(12)の動力が不要となる。また、従来例のように、液体吸収剤を蒸発部と凝縮部とで交互に冷却・加熱することがないため、このような冷却・加熱に起因する熱ロスを低減でき、圧縮機(36)の消費電力も抑えることができる。その結果、省エネ性に優れた除湿運転を行うことができる。
-Effect of Embodiment 1-
In the dehumidifying operation of the first embodiment described above, in the pump stop operation (first operation), the liquid absorbent is stored in the supply side module (40a) and the exhaust side module (40b), respectively. The liquid absorbent in the side flow path (41a) is cooled by the evaporation section (46a), and the liquid absorbent in the exhaust side flow path (41b) is heated by the condensation section (46b). For this reason, in the pump stop operation of the dehumidifying operation, it is not necessary to circulate the liquid absorbent in the absorbent circuit (11), and the power of the pump (12) is unnecessary. In addition, unlike the conventional example, the liquid absorbent is not cooled and heated alternately in the evaporating part and the condensing part, so heat loss due to such cooling and heating can be reduced, and the compressor (36) Power consumption can be reduced. As a result, it is possible to perform a dehumidifying operation excellent in energy saving performance.

また、この除湿運転のポンプ停止運転時において、室外空気(OA)と供給空気(SA)の湿度差Δhが小さくなり、判定部(102)が除湿能力の低下を判定すると、入れ替え運転(第2運転)へ移行するようにしている。この入れ替え運転により、給気側流路(41a)に高濃度の液体吸収剤を送り、排気側流路(41b)に低濃度の液体吸収剤を送ることができ、給気側モジュール(40a)の除湿能力の低下を防止できる。従って、この調湿装置(10)では、信頼性の高い除湿性能を得ることができる。   In addition, when the dehumidifying operation is stopped in the pump, when the humidity difference Δh between the outdoor air (OA) and the supply air (SA) becomes small and the determination unit (102) determines that the dehumidifying capacity is reduced, the replacement operation (second operation) To shift to driving). By this replacement operation, a high-concentration liquid absorbent can be sent to the air supply side channel (41a) and a low concentration liquid absorbent can be sent to the exhaust side channel (41b). It is possible to prevent a decrease in the dehumidifying ability. Therefore, with this humidity control apparatus (10), highly reliable dehumidification performance can be obtained.

また、この除湿運転の入り替え運転では、溶液熱交換器(90)において、給気側流路(41a)へ送られる液体吸収剤を冷却し、同時に排気側流路(41b)へ送られる液体吸収剤を加熱している。これにより、入れ替え運転において、排気側モジュール(40b)側の比較的高温の液体吸収剤が給気側モジュール(40a)へそのまま送られることにより、給気側モジュール(40a)での吸湿能力(除湿能力)が低下してしまうことを防止できる。また、入れ替え運転において、給気側モジュール(40a)側の比較的低温の液体吸収剤が排気側モジュール(40b)側へそのまま送られることにより、排気側モジュール(40b)での放湿能力が低下してしまうことを防止できる。   Further, in this replacement operation of the dehumidifying operation, in the solution heat exchanger (90), the liquid absorbent sent to the air supply side channel (41a) is cooled and simultaneously the liquid sent to the exhaust side channel (41b). The absorbent is heated. As a result, in the replacement operation, the relatively high temperature liquid absorbent on the exhaust side module (40b) side is sent to the supply side module (40a) as it is, so that the moisture absorption capacity (dehumidification) in the supply side module (40a) is (Capability) can be prevented from decreasing. Moreover, in the replacement operation, the relatively low-temperature liquid absorbent on the air supply side module (40a) side is sent to the exhaust side module (40b) side as it is, so that the moisture release capacity in the exhaust side module (40b) is reduced. Can be prevented.

また、溶液熱交換器(90)は、対向流式で構成されるため、除湿運転時において、第1流路(90a)を流出した液体吸収剤の温度を比較的高く、逆に第2流路(90b)を流出した液体吸収剤の温度を比較的低くできる。これにより、給気側モジュール(40a)での除湿能力が更に増大する。   In addition, since the solution heat exchanger (90) is configured as a counter-flow type, the temperature of the liquid absorbent that has flowed out of the first flow path (90a) during the dehumidifying operation is relatively high, and conversely the second flow. The temperature of the liquid absorbent flowing out of the passage (90b) can be made relatively low. Thereby, the dehumidification capability in the supply side module (40a) further increases.

また、上述した実施形態の加湿運転では、ポンプ停止運転(第1運転)において、給気側モジュール(40a)と排気側モジュール(40b)との内部にそれぞれ液体吸収剤を溜めた状態とし、給気側流路(41a)の液体吸収剤を凝縮部(46a)で加熱し且つ排気側流路(41b)の液体吸収剤を蒸発部(46b)で冷却している。このため、この加湿運転のポンプ停止運転では、吸収剤回路(11)の液体吸収剤を循環させる必要がなく、ポンプ(12)の動力が不要となる。また、従来例のように、液体吸収剤を蒸発部と凝縮部とで交互に冷却・加熱することがないため、このような冷却・加熱に起因する熱ロスを低減でき、圧縮機(36)の消費電力も抑えることができる。その結果、省エネ性に優れた加湿運転を行うことができる。   In the humidification operation of the above-described embodiment, in the pump stop operation (first operation), the liquid absorbent is stored in the supply side module (40a) and the exhaust side module (40b), respectively. The liquid absorbent in the air side flow path (41a) is heated by the condensing part (46a), and the liquid absorbent in the exhaust side flow path (41b) is cooled by the evaporation part (46b). For this reason, in the pump stop operation of this humidification operation, it is not necessary to circulate the liquid absorbent in the absorbent circuit (11), and the power of the pump (12) is not required. In addition, unlike the conventional example, the liquid absorbent is not cooled and heated alternately in the evaporating part and the condensing part, so heat loss due to such cooling and heating can be reduced, and the compressor (36) Power consumption can be reduced. As a result, it is possible to perform a humidifying operation excellent in energy saving performance.

また、この加湿運転の入り替え運転では、溶液熱交換器(90)において、給気側流路(41a)へ送られる液体吸収剤を加熱し、同時に排気側流路(41b)へ送られる液体吸収剤を冷却している。これにより、入れ替え運転において、排気側モジュール(40b)側の比較的低温の液体吸収剤が給気側モジュール(40a)へそのまま送られることにより、給気側モジュール(40a)での放湿能力(加湿能力)が低下してしまうことを防止できる。また、入れ替え運転において、給気側モジュール(40a)側の比較的高温の液体吸収剤が排気側モジュール(40b)側へそのまま送られることにより、排気側モジュール(40b)での吸湿能力が低下してしまうことを防止できる。   Further, in this replacement operation of the humidifying operation, in the solution heat exchanger (90), the liquid absorbent that is sent to the air supply side channel (41a) is heated and simultaneously the liquid that is sent to the exhaust side channel (41b). The absorbent is cooling. Thereby, in the replacement operation, the relatively low temperature liquid absorbent on the exhaust side module (40b) side is sent to the supply side module (40a) as it is, so that the moisture release capability (40a) on the supply side module (40a) ( It is possible to prevent the (humidification ability) from being lowered. Further, in the replacement operation, the relatively high temperature liquid absorbent on the air supply side module (40a) side is sent to the exhaust side module (40b) side as it is, so that the moisture absorption capacity in the exhaust side module (40b) is reduced. Can be prevented.

また、溶液熱交換器(90)は、対向流式で構成されるため、加湿運転時において、第1流路(90a)を流出した液体吸収剤の温度を比較的低く、逆に第2流路(90b)を流出した液体吸収剤の温度を比較的高くできる。これにより、給気側モジュール(40a)で加湿能力が更に増大する。   In addition, since the solution heat exchanger (90) is configured in a counterflow manner, the temperature of the liquid absorbent that has flowed out of the first flow path (90a) during the humidification operation is relatively low, and conversely the second flow. The temperature of the liquid absorbent that has flowed out of the channel (90b) can be made relatively high. As a result, the humidification capacity is further increased in the supply side module (40a).

また、この加湿運転のポンプ停止運転時において、室外空気(OA)と供給空気(SA)の湿度差Δhが小さくなり、判定部(102)が加湿能力の低下を判定すると、入れ替え運転(第2運転)へ移行するようにしている。この入れ替え運転により、給気側流路(41a)に低濃度の液体吸収剤を送り、排気側流路(41b)に高濃度の液体吸収剤を送ることができ、給気側モジュール(40a)の加湿能力の低下を防止できる。従って、この調湿装置(10)では、信頼性の高い加湿性能を得ることができる。   Further, when the humidity difference Δh between the outdoor air (OA) and the supply air (SA) decreases during the pump stop operation of the humidification operation, and the determination unit (102) determines that the humidification capacity is reduced, the replacement operation (second operation) To shift to driving). By this replacement operation, a low concentration liquid absorbent can be sent to the air supply side channel (41a) and a high concentration liquid absorbent can be sent to the exhaust side channel (41b). It is possible to prevent a decrease in the humidifying ability of the. Therefore, in this humidity control apparatus (10), highly reliable humidification performance can be obtained.

また、本実施形態では、ポンプ停止運転と入れ替え運転とを交互に繰り返す際には、圧縮機(36)の運転が継続して行われる。従って、吸湿路(41a,41b)での液体吸収剤の冷却及び放湿路(41b,41a)での液体吸収剤の加熱を維持できるとともに、圧縮機(36)の発停回数も抑えることができる。   In the present embodiment, when the pump stop operation and the replacement operation are alternately repeated, the compressor (36) is continuously operated. Therefore, the cooling of the liquid absorbent in the moisture absorption path (41a, 41b) and the heating of the liquid absorbent in the moisture release path (41b, 41a) can be maintained, and the number of starts and stops of the compressor (36) can be suppressed. it can.

更に、本実施形態の吸収剤回路(11)は、1台のポンプ(12)が接続された単純な閉回路である。つまり、本実施形態では、吸収剤回路(11)の構成も簡素となるため、調湿装置(10)の低コスト化を図ることができる。   Furthermore, the absorbent circuit (11) of the present embodiment is a simple closed circuit to which one pump (12) is connected. That is, in this embodiment, since the structure of the absorbent circuit (11) is also simplified, the cost of the humidity control apparatus (10) can be reduced.

《発明の実施形態2》
実施形態2に係る調湿装置(10)は、上記実施形態1と吸収剤回路(11)の構成が異なるものである。また、この調湿装置(10)は、除湿運転と加湿運転の双方において、第1運転となる「両側循環運転」と、第2運転となる「入れ替え運転」とを切り換えて行う。
<< Embodiment 2 of the Invention >>
The humidity control apparatus (10) according to the second embodiment is different from the first embodiment in the configuration of the absorbent circuit (11). In addition, the humidity control apparatus (10) performs switching between the “both sides circulation operation” that is the first operation and the “replacement operation” that is the second operation in both the dehumidifying operation and the humidifying operation.

図6及び図7に示すように、吸収剤回路(11)には、切換機構を構成する2つの三方弁(16,17)と、2つの分流路(14,15)とが接続されている。具体的に、吸収剤回路(11)には、給気側流路(41a)の流出側に接続される給気側三方弁(16)と、排気側流路(41b)の流出側に接続される排気側三方弁(17)とが設けられている。各三方弁(16,17)は、それぞれ第1から第3までのポートを有している。   As shown in FIGS. 6 and 7, the absorbent circuit (11) is connected to two three-way valves (16, 17) constituting the switching mechanism and two branch channels (14, 15). . Specifically, the absorbent circuit (11) is connected to the supply side three-way valve (16) connected to the outflow side of the supply side flow path (41a) and to the outflow side of the exhaust side flow path (41b). The exhaust side three-way valve (17) is provided. Each three-way valve (16, 17) has first to third ports.

給気側三方弁(16)では、第1ポートが給気側流路(41a)の流出端と繋がり、第2ポートが給気側分流路(14)の流入端と繋がり、第3ポートが溶液熱交換器(90)の第1流路(90a)と繋がっている。排気側三方弁(17)では、第1ポートが排気側流路(41b)の流出端と繋がり、第2ポートが排気側分流路(15)の流入端と繋がり、第3ポートが溶液熱交換器(90)の第2流路(90b)と繋がっている。各三方弁(16,17)は、第1ポートと第2ポートとが連通して第3ポートが閉塞する第1状態(例えば図6に示す実線の状態)と、第1ポートと第3ポートとが連通して第2ポートが閉塞する第2状態(例えば図7に示す実線の状態)とに切換可能に構成されている。    In the supply-side three-way valve (16), the first port is connected to the outflow end of the supply-side flow path (41a), the second port is connected to the inflow end of the supply-side distribution flow path (14), and the third port is It connects with the 1st channel (90a) of a solution heat exchanger (90). In the exhaust side three-way valve (17), the first port is connected to the outflow end of the exhaust side flow path (41b), the second port is connected to the inflow end of the exhaust side branch flow path (15), and the third port is solution heat exchange Connected to the second flow path (90b) of the vessel (90). Each of the three-way valves (16, 17) includes a first state (for example, a solid line state shown in FIG. 6) in which the first port and the second port communicate with each other and the third port is closed, and the first port and the third port. Can be switched to a second state (for example, a solid line state shown in FIG. 7) in which the second port is closed.

給気側分流路(14)の流出端は、溶液熱交換器(90)の第2流路(90b)の流出端と給気側流路(41a)の流入端との間に接続している。また、給気側分流路(14)の流出端と給気側流路(41a)の流入端との間には、給気側ポンプ(12a)が設けられている。排気側分流路(15)の流出端は、溶液熱交換器(90)の第1流路(90a)の流出端と排気側流路(41b)の流入端との間に接続している。また、排気側分流路(15)の流出端と排気側流路(41b)の流入端との間には、排気側ポンプ(12b)が設けられている。給気側ポンプ(12a)及び排気側ポンプ(12b)は、吸収剤回路(11)の液体吸収剤を搬送するポンプ機構を構成する。給気側ポンプ(12a)及び排気側ポンプ(12b)は、流量が可変な容積型のポンプである。   The outflow end of the supply side branch (14) is connected between the outflow end of the second flow path (90b) of the solution heat exchanger (90) and the inflow end of the supply side flow path (41a). Yes. An air supply side pump (12a) is provided between the outflow end of the air supply side branch channel (14) and the inflow end of the air supply side channel (41a). The outflow end of the exhaust side branch channel (15) is connected between the outflow end of the first channel (90a) of the solution heat exchanger (90) and the inflow end of the exhaust side channel (41b). An exhaust pump (12b) is provided between the outflow end of the exhaust side branch (15) and the inflow end of the exhaust side (41b). The air supply side pump (12a) and the exhaust side pump (12b) constitute a pump mechanism that conveys the liquid absorbent in the absorbent circuit (11). The supply side pump (12a) and the exhaust side pump (12b) are positive displacement pumps with variable flow rates.

実施形態2の吸収剤回路(11)では、液体吸収剤の流路が、各三方弁(16,17)の設定に応じて、第1の流路と第2の流路とに切換可能となっている。具体的に、各三方弁(16,17)が第1状態になると、吸収剤回路(11)に第1流路が形成される(例えば図6を参照)。この第1流路では、給気側流路(41a)を含む閉ループ状の給気側循環回路(11a)と、排気側流路(41b)を含む閉ループ状の排気側循環回路(11b)とが形成される。また、各三方弁(16,17)が第2状態になると、吸収剤回路(11)に第2流路が形成される(例えば図7を参照)。この第2流路では、給気側流路(41a)及び排気側流路(41b)を含む閉ループ状の給排気側循環回路(11c)が形成される。   In the absorbent circuit (11) of the second embodiment, the flow path of the liquid absorbent can be switched between the first flow path and the second flow path according to the settings of the three-way valves (16, 17). It has become. Specifically, when each three-way valve (16, 17) is in the first state, a first flow path is formed in the absorbent circuit (11) (see, for example, FIG. 6). In the first flow path, a closed-loop supply-side circulation circuit (11a) including an intake-side flow path (41a), and a closed-loop exhaust-side circulation circuit (11b) including an exhaust-side flow path (41b) Is formed. When each three-way valve (16, 17) is in the second state, a second flow path is formed in the absorbent circuit (11) (see, for example, FIG. 7). In the second flow path, a closed-loop supply / exhaust side circulation circuit (11c) including an air supply side flow path (41a) and an exhaust side flow path (41b) is formed.

除湿運転の第1流路においては、吸湿路となる給気側流路(41a)を含む給気側循環回路(11a)が、吸湿側循環回路を構成し、放湿路となる排気側流路(41b)を含む排気側循環回路(11b)が、放湿側循環回路を構成する。加湿運転の第1流路においては、放湿路となる給気側流路(41a)を含む給気側循環回路(11a)が、放湿側循環回路を構成し、吸湿路となる排気側流路(41b)を含む排気側循環回路(11b)が、吸湿側循環回路を構成する。また、除湿運転及び加湿運転の第2流路では、上述した給排気側循環回路(11c)が、吸放湿循環回路を構成する。   In the first flow path of the dehumidifying operation, the air supply side circulation circuit (11a) including the air supply side flow path (41a) serving as the moisture absorption path constitutes the moisture absorption side circulation circuit, and the exhaust side flow serving as the moisture release path. The exhaust side circulation circuit (11b) including the passage (41b) constitutes a moisture release side circulation circuit. In the first flow path of the humidifying operation, the air supply side circulation circuit (11a) including the air supply side flow path (41a) serving as the moisture release path constitutes the moisture release side circulation circuit, and the exhaust side serving as the moisture absorption path. The exhaust side circulation circuit (11b) including the flow path (41b) constitutes a moisture absorption side circulation circuit. Further, in the second flow path of the dehumidifying operation and the humidifying operation, the above-described supply / exhaust side circulation circuit (11c) constitutes an absorption / desorption moisture circulation circuit.

なお、この変形例に係る2つの三方弁(16,17)に替わって、4つの開閉弁や他の方式の切換機構を用いることで、第1流路と第2流路とを切り換えるようにしてもよい。   Instead of the two three-way valves (16, 17) according to this modification, four on-off valves and other types of switching mechanisms are used to switch between the first flow path and the second flow path. May be.

〈調湿装置の運転動作〉
次に、実施形態2に係る調湿装置(10)の運転動作について説明する。
<Operation of humidity control device>
Next, the operation of the humidity control apparatus (10) according to the second embodiment will be described.

《除湿運転》
図6及び図7に示すように、除湿運転では、コントローラ(100)により、四路切換弁(37)が第1状態に設定され、圧縮機(36)が運転される。これにより、除湿運転では、排気側モジュール(40b)の伝熱部材(46b)が放熱部を構成し、給気側モジュール(40a)の伝熱部材(46a)が蒸発部を構成する。また、給気ファン(27)と排気ファン(28)とが運転される。これにより、室外空気(OA)が給気通路(25)に取り込まれ、室内空気(RA)が排気通路(26)に取り込まれる。室外空気(OA)は、給気側モジュール(40a)を通過して除湿された後、室内空間へ供給空気(SA)として供給される。室内空気(RA)は、排気側モジュール(40b)を通過して放湿された後、室外空間へ排出空気(EA)として排出される。
《Dehumidifying operation》
As shown in FIGS. 6 and 7, in the dehumidifying operation, the controller (100) sets the four-way switching valve (37) to the first state, and the compressor (36) is operated. Thus, in the dehumidifying operation, the heat transfer member (46b) of the exhaust side module (40b) constitutes a heat radiating portion, and the heat transfer member (46a) of the air supply side module (40a) constitutes an evaporation portion. In addition, the air supply fan (27) and the exhaust fan (28) are operated. As a result, outdoor air (OA) is taken into the air supply passage (25) and indoor air (RA) is taken into the exhaust passage (26). The outdoor air (OA) passes through the air supply module (40a) and is dehumidified, and then supplied to the indoor space as supply air (SA). The room air (RA) passes through the exhaust side module (40b) and is dehumidified, and then is discharged as exhaust air (EA) to the outdoor space.

このような除湿運転では、次のように「両側循環運転」と「入れ替え運転」とが交互に切り換えられる。   In such a dehumidifying operation, “both sides circulation operation” and “replacement operation” are alternately switched as follows.

−両側循環運転−
図6に示す除湿運転時の両側循環運転では、各三方弁(16,17)が第1状態に設定され、給気側ポンプ(12a)及び排気側ポンプ(12b)が運転状態となる。その結果、給気側循環回路(11a)と排気側循環回路(11b)とでそれぞれ液体吸収剤が循環する。
-Double-sided circulation operation-
In the bilateral circulation operation during the dehumidifying operation shown in FIG. 6, the three-way valves (16, 17) are set to the first state, and the supply side pump (12a) and the exhaust side pump (12b) are in the operation state. As a result, the liquid absorbent circulates in the supply side circulation circuit (11a) and the exhaust side circulation circuit (11b).

給気側循環回路(11a)では、給気側ポンプ(12a)から吐出された液体吸収剤が給気側モジュール(40a)の給気側流路(41a)を流れる。給気側モジュール(40a)では、蒸発部(46a)によって液体吸収剤が冷却され、この液体吸収剤の水蒸気分圧が低くなっている。このため、給気側モジュール(40a)では、室外空気中の水蒸気が透湿膜(62)を通過して液体吸収剤に吸収されていく。給気側流路(41a)で吸湿した液体吸収剤は、給気側三方弁(16)、給気側ポンプ(12a)を順に通過して、給気側流路(41a)へ再び送られる。   In the supply side circulation circuit (11a), the liquid absorbent discharged from the supply side pump (12a) flows through the supply side flow path (41a) of the supply side module (40a). In the supply side module (40a), the liquid absorbent is cooled by the evaporation section (46a), and the water vapor partial pressure of the liquid absorbent is low. For this reason, in the supply side module (40a), water vapor in the outdoor air passes through the moisture permeable membrane (62) and is absorbed by the liquid absorbent. The liquid absorbent that has absorbed moisture in the supply-side flow path (41a) passes through the supply-side three-way valve (16) and the supply-side pump (12a) in this order, and is sent again to the supply-side flow path (41a). .

排気側循環回路(11b)では、排気側ポンプ(12b)から吐出された液体吸収剤が排気側モジュール(40b)の排気側流路(41b)を流れる。排気側モジュール(40b)では、放熱部(46b)によって液体吸収剤が加熱され、この液体吸収剤の水蒸気分圧が高くなっている。このため、排気側モジュール(40b)では、液体吸収剤中の水蒸気が透湿膜(62)を通過して空気に放出されていく。排気側モジュール(40b)で放湿した空気は、室外空間へ排出される。排気側流路(41b)で放湿した液体吸収剤は、排気側三方弁(17)、排気側ポンプ(12b)を順に通過して、排気側流路(41b)へ再び送られる。   In the exhaust side circulation circuit (11b), the liquid absorbent discharged from the exhaust side pump (12b) flows through the exhaust side flow path (41b) of the exhaust side module (40b). In the exhaust side module (40b), the liquid absorbent is heated by the heat radiating section (46b), and the water vapor partial pressure of the liquid absorbent is high. For this reason, in the exhaust side module (40b), the water vapor in the liquid absorbent passes through the moisture permeable membrane (62) and is released into the air. The air released by the exhaust side module (40b) is discharged to the outdoor space. The liquid absorbent dehumidified in the exhaust side flow path (41b) passes through the exhaust side three-way valve (17) and the exhaust side pump (12b) in this order, and is sent again to the exhaust side flow path (41b).

−両側循環運転時の判定動作−
除湿運転において、上記両側循環運転を継続して行うと、吸湿側となる給気側循環回路(11a)では、循環する液体吸収剤の濃度が徐々に低くなっていく。同時に、放湿側となる排気側循環回路(11b)では、循環する液体吸収剤の濃度が徐々に高くなっていく。その結果、給気側モジュール(40a)での空気の除湿能力が低下してしまう。そこで、実施形態2の判定部(102)は、室外空気(OA)と供給空気(SA)の湿度差Δhが所定値よりも小さくなると、除湿能力が低下したと判定する。これに伴い、運転制御部(103)は、「両側循環運転」から「入れ替え運転」へと運転を切り換える。
-Judgment operation during double-sided circulation operation-
In the dehumidifying operation, when the both-side circulation operation is continuously performed, the concentration of the circulating liquid absorbent gradually decreases in the air supply side circulation circuit (11a) on the moisture absorption side. At the same time, in the exhaust side circulation circuit (11b) on the moisture release side, the concentration of the circulating liquid absorbent gradually increases. As a result, the dehumidifying ability of air in the supply side module (40a) is reduced. Therefore, the determination unit (102) of the second embodiment determines that the dehumidifying capacity is reduced when the humidity difference Δh between the outdoor air (OA) and the supply air (SA) becomes smaller than a predetermined value. Accordingly, the operation control unit (103) switches the operation from “both sides circulation operation” to “replacement operation”.

−入れ替え運転−
図7に示す除湿運転時の「入れ替え運転」では、冷媒回路(35)及びファン(27,28)が上記の「両側循環運転」と同様に制御される。一方、「入れ替え運転」では、各三方弁(16,17)が第2状態に設定され、給気側ポンプ(12a)及び排気側ポンプ(12b)が運転状態となる。入れ替え運転での給気側ポンプ(12a)及び排気側ポンプ(12b)の吐出量は、両側循環運転での給気側ポンプ(12a)及び排気側ポンプ(12b)の吐出量(20L/min程度)よりも小さい値(10L/min程度)に設定される。
-Replacement operation-
In the “replacement operation” at the time of the dehumidifying operation shown in FIG. 7, the refrigerant circuit (35) and the fans (27, 28) are controlled in the same manner as the “both sides circulation operation”. On the other hand, in the “replacement operation”, the three-way valves (16, 17) are set to the second state, and the supply side pump (12a) and the exhaust side pump (12b) are in the operation state. The discharge amount of the supply side pump (12a) and the exhaust side pump (12b) in the replacement operation is the discharge amount of the supply side pump (12a) and the exhaust side pump (12b) (about 20L / min) in the double-sided circulation operation. ) Is set to a smaller value (about 10 L / min).

除湿運転時の「入れ替え運転」の開始直前には、給気側循環回路(11a)に比較的低濃度の液体吸収剤が存在し、排気側循環回路(11b)に比較的高濃度の液体吸収剤が存在している。また、給気側循環回路(11a)の液体吸収剤は、蒸発部(46a)によって冷却されることで、比較的低温となっている。排気側モジュール(40b)の液体吸収剤は、放熱部(46b)によって加熱されることで、比較的高温となっている。この状態から入れ替え運転が実行されると、給気側流路(41a)にある低濃度且つ低温の液体吸収剤は、排気側モジュール(40b)側へ送られ、同時に排気側流路(41b)にある高濃度且つ高温の液体吸収剤は、給気側モジュール(40a)側へ送られる。   Immediately before the start of the “replacement operation” during the dehumidifying operation, there is a relatively low concentration liquid absorbent in the supply side circulation circuit (11a), and a relatively high concentration liquid absorption in the exhaust side circulation circuit (11b). The agent is present. Further, the liquid absorbent in the supply side circulation circuit (11a) is cooled at a relatively low temperature by being cooled by the evaporation section (46a). The liquid absorbent in the exhaust module (40b) is heated by the heat radiating section (46b), and thus has a relatively high temperature. When the replacement operation is executed from this state, the low-concentration and low-temperature liquid absorbent in the supply-side channel (41a) is sent to the exhaust-side module (40b) side, and at the same time, the exhaust-side channel (41b) The high-concentration and high-temperature liquid absorbent in the tank is sent to the supply-side module (40a) side.

給気側流路(41a)を流出した液体吸収剤は、給気側三方弁(16)を通過した後、溶液熱交換器(90)の第1流路(90a)を流れる。また、排気側流路(41b)を流出した液体吸収剤は、排気側三方弁(17)を通過した後、溶液熱交換器(90)の第2流路(90b)を流れる。溶液熱交換器(90)では、第1流路(90a)を流れる液体吸収剤と、第2流路(90b)を流れる液体吸収剤とが、互いに向かい合うように流れて熱交換する。その結果、溶液熱交換器(90)では、第1流路(90a)を流れる液体吸収剤が所定の温度まで加熱され、第2流路(90b)を流れる液体吸収剤が所定の温度まで冷却される。   The liquid absorbent that has flowed out of the air supply side flow path (41a) passes through the air supply side three-way valve (16) and then flows through the first flow path (90a) of the solution heat exchanger (90). The liquid absorbent that has flowed out of the exhaust side flow path (41b) passes through the exhaust side three-way valve (17) and then flows through the second flow path (90b) of the solution heat exchanger (90). In the solution heat exchanger (90), the liquid absorbent flowing through the first flow path (90a) and the liquid absorbent flowing through the second flow path (90b) flow so as to face each other to exchange heat. As a result, in the solution heat exchanger (90), the liquid absorbent flowing through the first flow path (90a) is heated to a predetermined temperature, and the liquid absorbent flowing through the second flow path (90b) is cooled to the predetermined temperature. Is done.

第1流路(90a)で加熱された低濃度の液体吸収剤は、排気側モジュール(40b)の排気側流路(41b)へ送られる。第2流路(90b)で冷却された高濃度の液体吸収剤は、給気側モジュール(40a)の給気側流路(41a)へ送られる。以上のようにして、吸収剤回路(11)では、給気側モジュール(40a)内の液体吸収剤と、排気側モジュール(40b)内の液体吸収剤とが、相互に入れ替わるようにポンプ(12)が運転される。   The low concentration liquid absorbent heated in the first flow path (90a) is sent to the exhaust side flow path (41b) of the exhaust side module (40b). The high concentration liquid absorbent cooled in the second flow path (90b) is sent to the air supply side flow path (41a) of the air supply side module (40a). As described above, in the absorbent circuit (11), the liquid absorbent in the supply side module (40a) and the liquid absorbent in the exhaust side module (40b) are exchanged with each other. ) Is driven.

「入れ替え運転」が開始されてから設定部(101)に設定された時間が経過すると、再び「両側循環運転」に切り換わり、給気側循環回路(11a)と排気側循環回路(11b)とが形成される。この状態では、排気側モジュール(40b)内にあった高濃度の液体吸収剤が、給気側循環回路(11a)を循環し、給気側モジュール(40a)内にあった低濃度の液体吸収剤が、排気側循環回路(11b)を循環する。このため、給気側モジュール(40a)では、室外空気中の水蒸気が透湿膜(62)を通過して液体吸収剤に吸収される。また、排気側モジュール(40b)では、液体吸収剤中の水蒸気が透湿膜(62)を通過して室内空気へ放出される。   When the time set in the setting unit (101) has elapsed since the start of the “replacement operation”, the operation is switched again to the “double-side circulation operation”, and the supply side circulation circuit (11a) and the exhaust side circulation circuit (11b) Is formed. In this state, the high concentration liquid absorbent that was in the exhaust side module (40b) circulates in the supply side circulation circuit (11a) and absorbs the low concentration liquid that was in the supply side module (40a). The agent circulates in the exhaust side circulation circuit (11b). For this reason, in the supply side module (40a), water vapor in the outdoor air passes through the moisture permeable membrane (62) and is absorbed by the liquid absorbent. In the exhaust module (40b), the water vapor in the liquid absorbent passes through the moisture permeable membrane (62) and is released into the room air.

また、上述した入れ替え運転において、給気側モジュール(40a)に送られた液体吸収剤は、溶液熱交換器(90)において冷却され、排気側モジュール(40b)に送られた液体吸収剤は、溶液熱交換器(90)において加熱されている。このため、その後の両側循環運転では、給気側モジュール(40a)における吸湿能力(除湿能力)や、排気側モジュール(40b)における放湿能力が増大する。   In the above-described replacement operation, the liquid absorbent sent to the air supply side module (40a) is cooled in the solution heat exchanger (90), and the liquid absorbent sent to the exhaust side module (40b) is Heated in a solution heat exchanger (90). For this reason, in the subsequent double-sided circulation operation, the moisture absorption capability (dehumidification capability) in the supply side module (40a) and the moisture release capability in the exhaust side module (40b) increase.

《加湿運転》
図8及び図9に示すように、加湿運転では、コントローラ(100)により、四路切換弁(37)が第2状態に設定され、圧縮機(36)が運転される。これにより、加湿運転では、排気側モジュール(40b)の伝熱部材(46b)が蒸発部を構成し、給気側モジュール(40a)の伝熱部材(46a)が放熱部を構成する。また、給気ファン(27)と排気ファン(28)とが運転される。これにより、室外空気(OA)が給気通路(25)に取り込まれ、室内空気(RA)が排気通路(26)に取り込まれる。室外空気(OA)は、給気側モジュール(40a)を通過して加湿された後、室内空間へ供給空気(SA)として供給される。室内空気(RA)は、排気側モジュール(40b)を通過して吸湿された後、室外空間へ排出空気(EA)として排出される。
《Humidification operation》
As shown in FIGS. 8 and 9, in the humidifying operation, the controller (100) sets the four-way switching valve (37) to the second state and operates the compressor (36). Thereby, in the humidification operation, the heat transfer member (46b) of the exhaust side module (40b) constitutes an evaporation portion, and the heat transfer member (46a) of the air supply side module (40a) constitutes a heat dissipation portion. In addition, the air supply fan (27) and the exhaust fan (28) are operated. As a result, outdoor air (OA) is taken into the air supply passage (25) and indoor air (RA) is taken into the exhaust passage (26). The outdoor air (OA) passes through the air supply module (40a) and is humidified, and then supplied to the indoor space as supply air (SA). The room air (RA) passes through the exhaust side module (40b) and is absorbed, and then discharged to the outdoor space as exhaust air (EA).

このような加湿運転では、次のように「両側循環運転」と「入れ替え運転」とが交互に切り換えられる。   In such a humidifying operation, “both sides circulating operation” and “replacement operation” are alternately switched as follows.

−両側循環運転−
図8に示す加湿運転時の両側循環運転では、各三方弁(16,17)が第1状態に設定され、給気側ポンプ(12a)及び排気側ポンプ(12b)が運転状態となる。その結果、給気側循環回路(11a)と排気側循環回路(11b)とでそれぞれ液体吸収剤が循環する。
-Double-sided circulation operation-
In the both-side circulation operation at the time of the humidification operation shown in FIG. 8, the three-way valves (16, 17) are set to the first state, and the supply side pump (12a) and the exhaust side pump (12b) are in the operation state. As a result, the liquid absorbent circulates in the supply side circulation circuit (11a) and the exhaust side circulation circuit (11b).

給気側循環回路(11a)では、給気側ポンプ(12a)から吐出された液体吸収剤が給気側モジュール(40a)の給気側流路(41a)を流れる。給気側モジュール(40a)では、放熱部(46a)によって液体吸収剤が加熱され、この液体吸収剤の水蒸気分圧が高くなっている。このため、給気側モジュール(40a)では、液体吸収剤中の水蒸気が透湿膜(62)を通過して室外空気に放出されていく。給気側流路(41a)で放湿した液体吸収剤は、給気側三方弁(16)、給気側ポンプ(12a)を順に通過して、給気側流路(41a)へ再び送られる。   In the supply side circulation circuit (11a), the liquid absorbent discharged from the supply side pump (12a) flows through the supply side flow path (41a) of the supply side module (40a). In the supply side module (40a), the liquid absorbent is heated by the heat radiating section (46a), and the water vapor partial pressure of the liquid absorbent is high. For this reason, in the air supply side module (40a), the water vapor in the liquid absorbent passes through the moisture permeable membrane (62) and is released into the outdoor air. The liquid absorbent dehumidified in the air supply side channel (41a) passes through the air supply side three-way valve (16) and the air supply side pump (12a) in this order, and is sent again to the air supply side channel (41a). It is done.

排気側循環回路(11b)では、排気側ポンプ(12b)から吐出された液体吸収剤が排気側モジュール(40b)の排気側流路(41b)を流れる。排気側モジュール(40b)では、蒸発部(46b)によって液体吸収剤が冷却され、この液体吸収剤の水蒸気分圧が低くなっている。このため、排気側モジュール(40b)では、室内空気中の水蒸気が透湿膜(62)を通過して液体吸収剤に吸収されていく。排気側モジュール(40b)で吸湿した空気は、室外空間へ排出される。排気側流路(41b)で放湿した液体吸収剤は、排気側三方弁(17)、排気側ポンプ(12b)を順に通過して、排気側流路(41b)へ再び送られる。   In the exhaust side circulation circuit (11b), the liquid absorbent discharged from the exhaust side pump (12b) flows through the exhaust side flow path (41b) of the exhaust side module (40b). In the exhaust side module (40b), the liquid absorbent is cooled by the evaporation section (46b), and the water vapor partial pressure of the liquid absorbent is low. For this reason, in the exhaust side module (40b), water vapor in the room air passes through the moisture permeable membrane (62) and is absorbed by the liquid absorbent. The air absorbed by the exhaust module (40b) is discharged to the outdoor space. The liquid absorbent dehumidified in the exhaust side flow path (41b) passes through the exhaust side three-way valve (17) and the exhaust side pump (12b) in this order, and is sent again to the exhaust side flow path (41b).

−両側循環運転時の判定動作−
加湿運転において、上記両側循環運転を継続して行うと、放湿側となる給気側循環回路(11a)では、循環する液体吸収剤の濃度が徐々に高くなっていく。同時に、吸湿側となる排気側循環回路(11b)では、循環する液体吸収剤の濃度が徐々に低くなっていく。その結果、給気側モジュール(40a)での空気の加湿能力が低下してしまう。そこで、実施形態2の判定部(102)は、室外空気(OA)と供給空気(SA)の湿度差Δhが所定値よりも小さくなると、加湿能力が低下したと判定する。これに伴い、運転制御部(103)は、「両側循環運転」から「入れ替え運転」へと運転を切り換える。
-Judgment operation during double-sided circulation operation-
In the humidification operation, when the above-described both-side circulation operation is continuously performed, the concentration of the circulated liquid absorbent gradually increases in the supply side circulation circuit (11a) on the moisture release side. At the same time, in the exhaust side circulation circuit (11b) on the moisture absorption side, the concentration of the circulating liquid absorbent gradually decreases. As a result, the air humidification capability in the supply side module (40a) is reduced. Therefore, the determination unit (102) of the second embodiment determines that the humidifying ability has decreased when the humidity difference Δh between the outdoor air (OA) and the supply air (SA) becomes smaller than a predetermined value. Accordingly, the operation control unit (103) switches the operation from “both sides circulation operation” to “replacement operation”.

−入れ替え運転−
図9に示す加湿運転時の「入れ替え運転」では、冷媒回路(35)及びファン(27,28)が上記の「両側循環運転」と同様に制御される。一方、「入れ替え運転」では、各三方弁(16,17)が第2状態に設定され、給気側ポンプ(12a)及び排気側ポンプ(12b)が運転状態となる。入れ替え運転での給気側ポンプ(12a)及び排気側ポンプ(12b)の吐出量は、両側循環運転での給気側ポンプ(12a)及び排気側ポンプ(12b)の吐出量(20L/min程度)よりも小さい値(10L/min程度)に設定される。
-Replacement operation-
In the “replacement operation” during the humidification operation shown in FIG. 9, the refrigerant circuit (35) and the fans (27, 28) are controlled in the same manner as in the “both sides circulation operation”. On the other hand, in the “replacement operation”, the three-way valves (16, 17) are set to the second state, and the supply side pump (12a) and the exhaust side pump (12b) are in the operation state. The discharge amount of the supply side pump (12a) and the exhaust side pump (12b) in the replacement operation is the discharge amount of the supply side pump (12a) and the exhaust side pump (12b) (about 20L / min) in the double-sided circulation operation. ) Is set to a smaller value (about 10 L / min).

加湿運転時の「入れ替え運転」の開始直前には、給気側循環回路(11a)に比較的高濃度の液体吸収剤が存在し、排気側循環回路(11b)に比較的低濃度の液体吸収剤が存在している。また、給気側循環回路(11a)の液体吸収剤は、放熱部(46a)によって加熱されることで、比較的高温となっている。排気側モジュール(40b)の液体吸収剤は、蒸発部(46b)によって冷却されることで、比較的低温となっている。この状態から入れ替え運転が実行されると、給気側流路(41a)にある高濃度且つ高温の液体吸収剤は、排気側モジュール(40b)側へ送られ、同時に排気側流路(41b)にある低濃度且つ低温の液体吸収剤は、給気側モジュール(40a)側へ送られる。   Immediately before the start of the “replacement operation” during humidification operation, there is a relatively high concentration of liquid absorbent in the supply side circulation circuit (11a), and absorption of a relatively low concentration of liquid in the exhaust side circulation circuit (11b). The agent is present. Further, the liquid absorbent in the supply side circulation circuit (11a) is heated by the heat radiating section (46a), and thus has a relatively high temperature. The liquid absorbent in the exhaust module (40b) is cooled by the evaporating section (46b), so that the temperature is relatively low. When the replacement operation is executed from this state, the high-concentration and high-temperature liquid absorbent in the air supply side channel (41a) is sent to the exhaust side module (40b) side, and at the same time, the exhaust side channel (41b) The low-concentration and low-temperature liquid absorbent in the tank is sent to the supply-side module (40a) side.

給気側流路(41a)を流出した液体吸収剤は、給気側三方弁(16)を通過した後、溶液熱交換器(90)の第1流路(90a)を流れる。また、排気側流路(41b)を流出した液体吸収剤は、排気側三方弁(17)を通過した後、溶液熱交換器(90)の第2流路(90b)を流れる。溶液熱交換器(90)では、第1流路(90a)を流れる液体吸収剤と、第2流路(90b)を流れる液体吸収剤とが、互いに向かい合うように流れて熱交換する。その結果、溶液熱交換器(90)では、第1流路(90a)を流れる液体吸収剤が所定の温度まで冷却され、第2流路(90b)を流れる液体吸収剤が所定の温度まで加熱される。   The liquid absorbent that has flowed out of the air supply side flow path (41a) passes through the air supply side three-way valve (16) and then flows through the first flow path (90a) of the solution heat exchanger (90). The liquid absorbent that has flowed out of the exhaust side flow path (41b) passes through the exhaust side three-way valve (17) and then flows through the second flow path (90b) of the solution heat exchanger (90). In the solution heat exchanger (90), the liquid absorbent flowing through the first flow path (90a) and the liquid absorbent flowing through the second flow path (90b) flow so as to face each other to exchange heat. As a result, in the solution heat exchanger (90), the liquid absorbent flowing through the first flow path (90a) is cooled to a predetermined temperature, and the liquid absorbent flowing through the second flow path (90b) is heated to the predetermined temperature. Is done.

第1流路(90a)で冷却された高濃度の液体吸収剤は、排気側モジュール(40b)の排気側流路(41b)へ送られる。第2流路(90b)で加熱された低濃度の液体吸収剤は、給気側モジュール(40a)の給気側流路(41a)へ送られる。以上のようにして、吸収剤回路(11)では、給気側モジュール(40a)内の液体吸収剤と、排気側モジュール(40b)内の液体吸収剤とが、相互に入れ替わるようにポンプ(12)が運転される。   The high concentration liquid absorbent cooled in the first flow path (90a) is sent to the exhaust side flow path (41b) of the exhaust side module (40b). The low concentration liquid absorbent heated in the second flow path (90b) is sent to the air supply side flow path (41a) of the air supply side module (40a). As described above, in the absorbent circuit (11), the liquid absorbent in the supply side module (40a) and the liquid absorbent in the exhaust side module (40b) are exchanged with each other. ) Is driven.

「入れ替え運転」が開始されてから設定部(101)に設定された時間が経過すると、再び「両側循環運転」に切り換わり、給気側循環回路(11a)と排気側循環回路(11b)とが形成される。この状態では、排気側モジュール(40b)内にあった低濃度の液体吸収剤が、給気側循環回路(11a)を循環し、給気側モジュール(40a)内にあった高濃度の液体吸収剤が、排気側循環回路(11b)を循環する。このため、給気側モジュール(40a)では、液体吸収剤中の水蒸気が透湿膜(62)を通過して室外空気へ放出される。また、排気側モジュール(40b)では、室内空気中の水蒸気が透湿膜(62)を通過して液体吸収剤に吸収される。   When the time set in the setting unit (101) has elapsed since the start of the “replacement operation”, the operation is switched again to the “double-side circulation operation”, and the supply side circulation circuit (11a) and the exhaust side circulation circuit (11b) Is formed. In this state, the low concentration liquid absorbent in the exhaust side module (40b) circulates in the supply side circulation circuit (11a) and absorbs the high concentration liquid in the supply side module (40a). The agent circulates in the exhaust side circulation circuit (11b). For this reason, in the air supply side module (40a), water vapor in the liquid absorbent passes through the moisture permeable membrane (62) and is released to the outdoor air. In the exhaust side module (40b), water vapor in the room air passes through the moisture permeable membrane (62) and is absorbed by the liquid absorbent.

また、上述した入れ替え運転において、給気側モジュール(40a)に送られた液体吸収剤は、溶液熱交換器(90)において加熱され、排気側モジュール(40b)に送られた液体吸収剤は、溶液熱交換器(90)において冷却されている。このため、その後の両側循環運転では、給気側モジュール(40a)における放湿能力(加湿能力)や、排気側モジュール(40b)における吸湿能力が増大する。   In the replacement operation described above, the liquid absorbent sent to the air supply side module (40a) is heated in the solution heat exchanger (90), and the liquid absorbent sent to the exhaust side module (40b) is It is cooled in the solution heat exchanger (90). For this reason, in the subsequent double-sided circulation operation, the moisture release capability (humidification capability) in the supply side module (40a) and the moisture absorption capability in the exhaust side module (40b) increase.

−実施形態2の効果−
上述した実施形態2の除湿運転や加湿運転では、両側循環運転(第1運転)において、給気側循環回路(11a)と排気側循環回路(11b)とでそれぞれ液体吸収剤を個別に循環させている。このため、この両側循環運転では、従来例のように、液体吸収剤を蒸発部と凝縮部とで交互に冷却・加熱することがないため、このような冷却・加熱に起因する熱ロスを低減でき、圧縮機(36)の消費電力も抑えることができる。その結果、この調湿装置(10)の省エネ性を向上できる。
-Effect of Embodiment 2-
In the dehumidifying operation and humidifying operation of Embodiment 2 described above, the liquid absorbent is circulated individually in the supply side circulation circuit (11a) and the exhaust side circulation circuit (11b) in both-side circulation operation (first operation). ing. For this reason, in this double-sided circulation operation, unlike the conventional example, the liquid absorbent is not cooled and heated alternately in the evaporating part and the condensing part, so heat loss caused by such cooling and heating is reduced. The power consumption of the compressor (36) can also be suppressed. As a result, the energy saving performance of the humidity control apparatus (10) can be improved.

また、実施形態2では、両側循環運転において、判定部(102)が調湿能力の低下を判定すると、入れ替え運転を行うようにしている。その結果、給気側モジュール(40a)の除湿能力や加湿能力を回復させて信頼性の高い運転を行うことができる。   In the second embodiment, when the determination unit (102) determines a decrease in humidity control capability in the double-sided circulation operation, the replacement operation is performed. As a result, it is possible to perform a highly reliable operation by restoring the dehumidifying ability and humidifying ability of the air supply side module (40a).

また、入り替え運転では、溶液熱交換器(90)において、給気側モジュール(40a)へ送られる液体吸収剤と排気側モジュール(40b)へ送られる液体吸収剤とを熱交換させている。これにより、実施形態1と同様にして、除湿能力や加湿能力を向上できる。   In the switching operation, the solution heat exchanger (90) exchanges heat between the liquid absorbent sent to the air supply side module (40a) and the liquid absorbent sent to the exhaust side module (40b). Thereby, similarly to Embodiment 1, a dehumidification capability and a humidification capability can be improved.

更に、実施形態2では、入れ替え運転時における吸収剤回路(11)の液体吸収剤の流量を、両側循環運転における給気側循環回路(11a)や排気側循環回路(11b での液体吸収剤の流量よりも小さくしている。これにより、溶液熱交換器(90)では、第1流路(90a)を流れる液体吸収剤と、第2流路(90b)を流れる液体吸収剤との間で熱交換の効率(温度効率)を促進できる。   Furthermore, in the second embodiment, the flow rate of the liquid absorbent in the absorbent circuit (11) during the replacement operation is determined by changing the flow rate of the liquid absorbent in the supply side circulation circuit (11a) and the exhaust side circulation circuit (11b) in the double-side circulation operation. Thus, in the solution heat exchanger (90), the liquid absorbent flowing through the first flow path (90a) and the liquid absorbent flowing through the second flow path (90b) are reduced. Heat exchange efficiency (temperature efficiency) can be promoted.

〈実施形態2の変形例〉
実施形態2の調湿装置(10)については、次のような変形例の構成としてもよい。この変形例に係る給気側モジュール(30a)及び排気側モジュール(30b)は、図10に示すように、第1ヘッダ部(31)と第2ヘッダ部(32)と、両者のヘッダ部(31,32)の間に介設される複数の調湿配管(33)とを有する。第1ヘッダ部(31)と第2ヘッダ部(32)とには、吸収剤回路(11)と繋がる吸収液管(31a,31b)がそれぞれ接続している。第1ヘッダ部(31)と第2ヘッダ部(32)との間には、調湿配管(33)の周囲を通過する空気通路(34)が形成される。
<Modification of Embodiment 2>
About the humidity control apparatus (10) of Embodiment 2, it is good also as a structure of the following modifications. As shown in FIG. 10, the air supply side module (30a) and the exhaust side module (30b) according to this modification include a first header part (31), a second header part (32), and a header part ( 31, 32) and a plurality of humidity control pipes (33). Absorbing liquid pipes (31a, 31b) connected to the absorbent circuit (11) are connected to the first header part (31) and the second header part (32), respectively. An air passage (34) that passes around the humidity control pipe (33) is formed between the first header part (31) and the second header part (32).

調湿配管(33)は、その外周面が透湿膜(33a)で構成され、その内部に液体吸収剤が流れる流路(36a,36b)が形成される。具体的に、給気側モジュール(30a)の調湿配管(33)の内部には、給気側流路(36a)が形成され、排気側モジュール(30b)の調湿配管(3
3)の内部には、排気側流路(36b)が形成される。これらの流路(36a,36b)は、放湿路又は吸湿路を構成する。
The humidity control pipe (33) has an outer peripheral surface constituted by a moisture permeable membrane (33a), and a flow path (36a, 36b) through which the liquid absorbent flows is formed. Specifically, the air supply side flow path (36a) is formed inside the humidity control pipe (33) of the air supply side module (30a), and the humidity control pipe (3
An exhaust side flow path (36b) is formed inside 3). These flow paths (36a, 36b) constitute a moisture release path or a moisture absorption path.

図11に示すように、この変形例では、液体吸収剤の加熱部や冷却部が、給気側モジュール(30a)や排気側モジュール(30b)とは別体に構成される。具体的に、変形例の冷媒回路(35)は、圧縮機(36)と給気側熱交換器(40c)と膨張弁(38)と排気側熱交換器(40d)と四路切換弁(37)とを備えている。給気側熱交換器(40c)は、給気側流路(36a)の上流側の液体吸収剤と、冷媒とを熱交換させる。排気側熱交換器(40d)は、排気側流路(36b)の上流側の液体吸収剤と、冷媒とを熱交換させる。給気側熱交換器(40c)及び排気側熱交換器(40d)は、液体吸収剤を冷却する冷却部又は液体吸収剤を加熱する加熱部として機能する。   As shown in FIG. 11, in this modification, the heating part and the cooling part of the liquid absorbent are configured separately from the supply side module (30a) and the exhaust side module (30b). Specifically, the refrigerant circuit (35) of the modified example includes a compressor (36), an air supply side heat exchanger (40c), an expansion valve (38), an exhaust side heat exchanger (40d), and a four-way switching valve ( 37). The supply side heat exchanger (40c) exchanges heat between the liquid absorbent on the upstream side of the supply side flow path (36a) and the refrigerant. The exhaust side heat exchanger (40d) exchanges heat between the liquid absorbent on the upstream side of the exhaust side flow path (36b) and the refrigerant. The supply-side heat exchanger (40c) and the exhaust-side heat exchanger (40d) function as a cooling unit that cools the liquid absorbent or a heating unit that heats the liquid absorbent.

〈調湿装置の運転動作〉
この変形例では、実施形態2と同様にして、除湿運転と加湿運転とが行われる。
<Operation of humidity control device>
In this modification, the dehumidifying operation and the humidifying operation are performed in the same manner as in the second embodiment.

〈除湿運転〉
除湿運転では、四路切換弁(37)が第1状態(図11の実線で示す状態)に設定され、圧縮機(36)が運転される。その結果、冷媒回路(35)では、排気側熱交換器(40d)が放熱部(凝縮部)となり、給気側熱交換器(40c)が蒸発部となる冷凍サイクルが行われる。また、除湿運転の両側循環運転では、各三方弁(16,17)が第1状態(図11の実線で示す状態)に設定され、除湿運転の入れ替え運転では、各三方弁(16,17)が第2状態(図11の破線で示す状態)に設定される。
<Dehumidifying operation>
In the dehumidifying operation, the four-way switching valve (37) is set to the first state (the state shown by the solid line in FIG. 11), and the compressor (36) is operated. As a result, in the refrigerant circuit (35), a refrigeration cycle is performed in which the exhaust-side heat exchanger (40d) serves as a heat radiating section (condensing section) and the supply-side heat exchanger (40c) serves as an evaporation section. Further, in both-side circulation operation of the dehumidifying operation, each three-way valve (16, 17) is set to the first state (state indicated by a solid line in FIG. 11), and in the replacement operation of the dehumidifying operation, each three-way valve (16, 17). Is set to the second state (the state indicated by the broken line in FIG. 11).

両側循環運転では、給気側ポンプ(12a)で吐出された液体吸収剤が、給気側熱交換器(40c)で冷却された後、給気側流路(36a)を流れる。給気側モジュール(30a)では、室外空気中の水蒸気が透湿膜(33a)を通過して液体吸収剤に吸収される。その結果、この空気が除湿される。給気側流路(36a)を流出した液体吸収剤は、給気側三方弁(16)、給気側ポンプ(12a)を順に通過し、給気側熱交換器(40c)で冷却された後に再び給気側流路(36a)へ送られる。   In the double-sided circulation operation, the liquid absorbent discharged by the supply side pump (12a) is cooled by the supply side heat exchanger (40c) and then flows through the supply side flow path (36a). In the air supply side module (30a), water vapor in the outdoor air passes through the moisture permeable membrane (33a) and is absorbed by the liquid absorbent. As a result, this air is dehumidified. The liquid absorbent that flowed out of the air supply side channel (36a) passed through the air supply side three-way valve (16) and the air supply side pump (12a) in this order, and was cooled by the air supply side heat exchanger (40c). Later, it is sent again to the air supply side flow path (36a).

また、両側循環運転では、排気側ポンプ(12b)で吐出された液体吸収剤が、排気側熱交換器(40d)で加熱された後、排気側流路(36b)を流れる。排気側モジュール(30b)では、液体吸収剤中の水蒸気が透湿膜(33a)を通過して室内空気へ放出される。排気側流路(36b)を流出した液体吸収剤は、排気側三方弁(17)、排気側ポンプ(12b)を順に通過し、排気側熱交換器(40d)で加熱された後に再び排気側流路(36b)へ送られる。   In the double-sided circulation operation, the liquid absorbent discharged by the exhaust side pump (12b) flows through the exhaust side flow path (36b) after being heated by the exhaust side heat exchanger (40d). In the exhaust side module (30b), water vapor in the liquid absorbent passes through the moisture permeable membrane (33a) and is released into the room air. The liquid absorbent that has flowed out of the exhaust-side flow path (36b) passes through the exhaust-side three-way valve (17) and the exhaust-side pump (12b) in this order, and is heated by the exhaust-side heat exchanger (40d) and then exhausted again. It is sent to the flow path (36b).

一方、入れ替え運転では、給気側流路(36a)にあった低濃度且つ低温の液体吸収剤が、溶液熱交換器(90)の第1流路(90a)を流れ、排気側流路(36b)にあった高濃度且つ高温の液体吸収剤が、溶液熱交換器(90)の第2流路(90b)を流れる。溶液熱交換器(90)では、第1流路(90a)の液体吸収剤が所定温度まで加熱され、第2流路(90b)の液体吸収剤が所定温度まで冷却される。   On the other hand, in the replacement operation, the low-concentration and low-temperature liquid absorbent in the supply-side flow path (36a) flows through the first flow path (90a) of the solution heat exchanger (90), and the exhaust-side flow path ( The high-concentration and high-temperature liquid absorbent in 36b) flows through the second flow path (90b) of the solution heat exchanger (90). In the solution heat exchanger (90), the liquid absorbent in the first flow path (90a) is heated to a predetermined temperature, and the liquid absorbent in the second flow path (90b) is cooled to a predetermined temperature.

第1流路(90a)で加熱された液体吸収剤は、排気側熱交換器(40d)で更に加熱された後、排気側モジュール(30b)へ送られる。第2流路(90b)で冷却された液体吸収剤は、給気側熱交換器(40c)で更に冷却された後、給気側モジュール(30a)へ送られる。これにより、その後の両側循環運転では、給気側モジュール(30a)の除湿能力が増大する。   The liquid absorbent heated in the first flow path (90a) is further heated by the exhaust side heat exchanger (40d) and then sent to the exhaust side module (30b). The liquid absorbent cooled in the second flow path (90b) is further cooled by the air supply side heat exchanger (40c) and then sent to the air supply side module (30a). Thereby, the dehumidification capability of the supply side module (30a) increases in the subsequent double-sided circulation operation.

〈加湿運転〉
加湿運転では、四路切換弁(37)が第2状態(図11の破線で示す状態)に設定され、圧縮機(36)が運転される。その結果、冷媒回路(35)では、給気側熱交換器(40c)が放熱部(凝縮部)となり、排気側熱交換器(40d)が蒸発部となる冷凍サイクルが行われる。また、加湿運転の両側循環運転では、各三方弁(16,17)が第1状態(図11の実線で示す状態)に設定され、加湿運転の入れ替え運転では、各三方弁(16,17)が第2状態(図11の破線で示す状態)に設定される。
<Humidification operation>
In the humidification operation, the four-way switching valve (37) is set to the second state (the state indicated by the broken line in FIG. 11), and the compressor (36) is operated. As a result, in the refrigerant circuit (35), a refrigeration cycle is performed in which the supply air side heat exchanger (40c) serves as a heat radiating part (condensing part) and the exhaust side heat exchanger (40d) serves as an evaporation part. Moreover, in the both-sides circulation operation of humidification operation, each three-way valve (16,17) is set to the 1st state (state shown by the continuous line of FIG. 11), and each three-way valve (16,17) is replaced in the humidification operation. Is set to the second state (the state indicated by the broken line in FIG. 11).

両側循環運転では、給気側ポンプ(12a)で吐出された液体吸収剤が、給気側熱交換器(40c)で加熱された後、給気側流路(36a)を流れる。給気側モジュール(30a)では、液体吸収剤中の水蒸気が透湿膜(33a)を通過して室外空気へ放出される。その結果、この空気が加湿される。給気側流路(36a)を流出した液体吸収剤は、給気側三方弁(16)、給気側ポンプ(12a)を順に通過し、給気側熱交換器(40c)で加熱された後に再び給気側流路(36a)へ送られる。   In the double-sided circulation operation, the liquid absorbent discharged by the supply side pump (12a) is heated by the supply side heat exchanger (40c) and then flows through the supply side flow path (36a). In the air supply side module (30a), water vapor in the liquid absorbent passes through the moisture permeable membrane (33a) and is released to the outdoor air. As a result, this air is humidified. The liquid absorbent that flowed out of the air supply side channel (36a) passed through the air supply side three-way valve (16) and the air supply side pump (12a) in this order, and was heated by the air supply side heat exchanger (40c). Later, it is sent again to the air supply side flow path (36a).

また、両側循環運転では、排気側ポンプ(12b)で吐出された液体吸収剤が、排気側熱交換器(40d)で冷却された後、排気側流路(36b)を流れる。排気側モジュール(30b)では、室内空気中の水蒸気が透湿膜(33a)を通過して液体吸収剤に吸収される。排気側流路(36b)を流出した液体吸収剤は、排気側三方弁(17)、排気側ポンプ(12b)を順に通過し、排気側熱交換器(40d)で冷却された後に再び排気側流路(36b)へ送られる。   In the double-sided circulation operation, the liquid absorbent discharged by the exhaust side pump (12b) is cooled by the exhaust side heat exchanger (40d) and then flows through the exhaust side flow path (36b). In the exhaust side module (30b), water vapor in the room air passes through the moisture permeable membrane (33a) and is absorbed by the liquid absorbent. The liquid absorbent that has flowed out of the exhaust-side flow path (36b) passes through the exhaust-side three-way valve (17) and the exhaust-side pump (12b) in this order, and is cooled by the exhaust-side heat exchanger (40d). It is sent to the flow path (36b).

一方、入れ替え運転では、給気側流路(36a)にあった高濃度且つ高温の液体吸収剤が、溶液熱交換器(90)の第1流路(90a)を流れ、排気側流路(36b)にあった低濃度且つ低温の液体吸収剤が、溶液熱交換器(90)の第2流路(90b)を流れる。溶液熱交換器(90)では、第1流路(90a)の液体吸収剤が所定温度まで冷却され、第2流路(90b)の液体吸収剤が所定温度まで加熱される。   On the other hand, in the replacement operation, the high-concentration and high-temperature liquid absorbent in the supply-side flow path (36a) flows through the first flow path (90a) of the solution heat exchanger (90), and the exhaust-side flow path ( The low concentration and low temperature liquid absorbent in 36b) flows through the second flow path (90b) of the solution heat exchanger (90). In the solution heat exchanger (90), the liquid absorbent in the first flow path (90a) is cooled to a predetermined temperature, and the liquid absorbent in the second flow path (90b) is heated to a predetermined temperature.

第1流路(90a)で冷却された液体吸収剤は、排気側熱交換器(40d)で更に冷却された後、排気側モジュール(30b)へ送られる。第2流路(90b)で加熱された液体吸収剤は、給気側熱交換器(40c)で更に加熱された後、給気側モジュール(30a)へ送られる。これにより、その後の両側循環運転では、給気側モジュール(30a)の加湿能力が増大する。   The liquid absorbent cooled in the first flow path (90a) is further cooled by the exhaust side heat exchanger (40d) and then sent to the exhaust side module (30b). The liquid absorbent heated in the second flow path (90b) is further heated by the supply side heat exchanger (40c) and then sent to the supply side module (30a). Thereby, the humidification capability of the air supply side module (30a) increases in the subsequent bilateral circulation operation.

変形例の調湿装置(10)におけるそれ以外の作用効果は、上述した実施形態2と同様である。   Other functions and effects of the humidity control apparatus (10) of the modification are the same as those of the second embodiment.

《その他の実施形態》
上述した各実施形態(その変形例も含む)については、以下のような構成としてもよい。
<< Other Embodiments >>
About each embodiment mentioned above (including the modification), it is good also as following structures.

図12に示す例(その他の第1の例)は、上述した実施形態とは、第1運転から第2運転への運転の切換の判定方法が異なるものである。具体的に、この例の調湿装置(10)は、吸収剤回路(11)の液体吸収剤の濃度を検知するための液濃度センサ(113)を備えている。液濃度センサ(113)は、給気側モジュール(40a)の給気側流路(41a)内に設けられており、第1運転(実施形態1に係る「ポンプ停止運転」や実施形態2に係る「両側循環運転」)時において、給気側流路(41a)に存在する液体吸収剤の濃度を検出する液濃度検出部を構成する。そして、判定部(102)は、液濃度センサ(113)の検出値に基づいて調湿能力の低下を判定する。   The example shown in FIG. 12 (the other first example) is different from the above-described embodiment in the method for determining the operation switching from the first operation to the second operation. Specifically, the humidity control apparatus (10) of this example includes a liquid concentration sensor (113) for detecting the concentration of the liquid absorbent in the absorbent circuit (11). The liquid concentration sensor (113) is provided in the air supply side flow path (41a) of the air supply side module (40a), and in the first operation ("pump stop operation" according to the first embodiment) During such “both-side circulation operation”), a liquid concentration detection unit that detects the concentration of the liquid absorbent present in the supply side flow path (41a) is configured. And a determination part (102) determines the fall of humidity control capability based on the detected value of a liquid concentration sensor (113).

具体的に、例えば除湿運転で第1運転を継続すると、給気側流路(41a)の液体吸収剤の濃度が徐々に低くなっていく。除湿運転において、液濃度センサ(113)で検知した液体吸収剤の濃度が所定値よりも小さくなると、判定部(102)は、除湿能力が低下したと判定する。これに伴い、運転制御部(103)は、第1運転から第2運転(「入れ替え運転」)へと運転モードを切り換える。その結果、給気側モジュール(40a)と排気側モジュール(40b)との間で液体吸収剤が相互に交換され、給気側モジュール(40a)の除湿能力が確保される。   Specifically, for example, when the first operation is continued in the dehumidifying operation, the concentration of the liquid absorbent in the air supply side channel (41a) gradually decreases. In the dehumidifying operation, when the concentration of the liquid absorbent detected by the liquid concentration sensor (113) becomes smaller than a predetermined value, the determination unit (102) determines that the dehumidifying ability has decreased. Accordingly, the operation control unit (103) switches the operation mode from the first operation to the second operation ("replacement operation"). As a result, the liquid absorbent is exchanged between the supply side module (40a) and the exhaust side module (40b), and the dehumidifying capacity of the supply side module (40a) is ensured.

また、例えば加湿運転で第1運転を継続すると、給気側流路(41a)の液体吸収剤の濃度が徐々に高くなっていく。加湿運転において、液濃度センサ(113)で検知した液体吸収剤の濃度が所定値よりも高くなると、判定部(102)は、加湿能力が低下したと判定する。これに伴い、運転制御部(103)は、第1運転から第2運転へと運転モードを切り換える。その結果、給気側モジュール(40a)と排気側モジュール(40b)との間で液体吸収剤が相互に交換され、給気側モジュール(40a)の加湿能力が確保される。   Further, for example, when the first operation is continued in the humidification operation, the concentration of the liquid absorbent in the supply side flow path (41a) gradually increases. In the humidification operation, when the concentration of the liquid absorbent detected by the liquid concentration sensor (113) becomes higher than a predetermined value, the determination unit (102) determines that the humidification capability has decreased. Accordingly, the operation control unit (103) switches the operation mode from the first operation to the second operation. As a result, the liquid absorbent is exchanged between the supply side module (40a) and the exhaust side module (40b), and the humidification capability of the supply side module (40a) is ensured.

なお、図12に示す例では、吸収剤回路(11)における液体吸収剤の濃度をセンサによって直接的に検出している。しかしながら、例えば給気ファン(27)の積算風量と、室外空気の絶対湿度と、室内空気の絶対湿度とに基づいて、吸収剤回路(11)の液体吸収剤の濃度を間接的に求めるようにしてもよい。また、液濃度センサ(113)を排気側流路(41b)に配置し、排気側流路(41b)の液体吸収剤の濃度を求めるようにしてもよい。   In the example shown in FIG. 12, the concentration of the liquid absorbent in the absorbent circuit (11) is directly detected by a sensor. However, for example, the concentration of the liquid absorbent in the absorbent circuit (11) is indirectly obtained based on the integrated air volume of the air supply fan (27), the absolute humidity of the outdoor air, and the absolute humidity of the indoor air. May be. Further, a liquid concentration sensor (113) may be arranged in the exhaust side flow path (41b) to obtain the concentration of the liquid absorbent in the exhaust side flow path (41b).

図13に示す例(その他の第2の例)は、上述した実施形態とは、第1運転から第2運転への運転の切換の判定方法が異なるものである。図13に示す調湿装置(10)では、上述した実施形態のような各種のセンサ(111,112,113)や、調湿装置(10)の調湿能力が低下したことを判定する判定部(102)が設けられていない。一方、この調湿装置(10)では、コントローラ(100)の設定部(101)に、第1運転(「ポンプ停止運転」や「両側循環運転」)の実行時間が設定される。この設定部(101)に設定される時間は、上記除湿運転では例えば10分に、上記加湿運転では例えば15分に設定される。つまり、設定部(101)では、除湿運転での第1運転の実行時間が、加湿運転での第2運転の実行時間よりも短く設定されている。この例では、第1運転が実行されてから、設定部(101)に設定された時間が経過すると、運転制御部(103)が第1運転から第2運転へと運転モードを切り換える。この例では、センサ等の検出部を設けることなく、第1運転から第2運転へと運転モードを確実に切り換えることができる。   The example shown in FIG. 13 (another second example) is different from the above-described embodiment in the method for determining the switching of the operation from the first operation to the second operation. In the humidity control apparatus (10) shown in FIG. 13, the various sensors (111, 112, 113) as in the above-described embodiment and the determination unit (102) that determines that the humidity control capacity of the humidity control apparatus (10) has decreased. Not provided. On the other hand, in the humidity control apparatus (10), the execution time of the first operation ("pump stop operation" or "both sides circulation operation") is set in the setting unit (101) of the controller (100). The time set in the setting unit (101) is set to, for example, 10 minutes in the dehumidifying operation and to, for example, 15 minutes in the humidifying operation. That is, in the setting unit (101), the execution time of the first operation in the dehumidifying operation is set shorter than the execution time of the second operation in the humidifying operation. In this example, when the time set in the setting unit (101) elapses after the first operation is performed, the operation control unit (103) switches the operation mode from the first operation to the second operation. In this example, the operation mode can be reliably switched from the first operation to the second operation without providing a detection unit such as a sensor.

図14に示す例(その他の第3の例)の調湿装置(10)は、取り込んだ室内空気(RA)を給気側モジュール(40a)で調湿し、この空気を供給空気(SA)として室内へ供給すると同時に、取り込んだ室外空気(OA)を排気側モジュール(40b)で調湿し、この空気を排出空気(EA)として室外へ排出するものである。   The humidity control device (10) of the example shown in FIG. 14 (other third example) adjusts the taken room air (RA) with the supply side module (40a) and supplies this air to the supply air (SA). At the same time as being supplied to the room, the taken outdoor air (OA) is conditioned by the exhaust side module (40b), and this air is discharged to the outside as exhaust air (EA).

図14の例の調湿装置(10)には、室内へ供給される供給空気(SA)の湿度を検出する給気湿度センサ(111)と、調湿装置(10)に取り込まれる室内空気(RA)の湿度を検出する内気湿度センサ(114)とが設けられている。第1運転において、給気湿度センサ(111)で検出した検出値と、内気湿度センサ(114)で検出した検出値との差が所定値よりも小さくなると、判定部(102)が調湿能力が低下したと判断し、運転制御部(103)が第1運転から第2運転へと運転モードを切り換える。なお、内気湿度センサ(114)を省略した構成として、供給空気(SA)の湿度のみを用いて第1運転から第2運転への運転モードの切換を行うようにしてもよい(上述した実施形態においても同様である)。   The humidity control apparatus (10) in the example of FIG. 14 includes an air supply humidity sensor (111) that detects the humidity of the supply air (SA) supplied to the room, and room air ( A room humidity sensor (114) for detecting the humidity of (RA) is provided. In the first operation, when the difference between the detection value detected by the supply air humidity sensor (111) and the detection value detected by the room air humidity sensor (114) becomes smaller than a predetermined value, the determination unit (102) The operation control unit (103) switches the operation mode from the first operation to the second operation. In addition, as a configuration in which the inside air humidity sensor (114) is omitted, the operation mode may be switched from the first operation to the second operation using only the humidity of the supply air (SA) (the embodiment described above). The same applies to the above).

以上説明したように、本発明は、液体吸収剤を用いて空気を調湿する調湿装置について有用である。   As described above, the present invention is useful for a humidity control apparatus that adjusts the humidity of air using a liquid absorbent.

10 調湿装置
11 吸収剤回路
11a 給気側循環回路(吸湿側循環回路、放湿側循環回路)
11b 排気側循環回路(放湿側循環回路、吸湿側循環回路)
11c 給排気側循環回路(吸放湿側循環回路)
12 ポンプ(ポンプ機構)
12a 給気側ポンプ(ポンプ機構)
12b 排気側ポンプ(ポンプ機構)
16 給気側三方弁(切換機構)
17 排気側三方弁(切換機構)
30a 給気側モジュール(吸湿部、放湿部)
30b 排気側モジュール(放湿部、吸湿部)
35 冷媒回路
36 圧縮機
36a 給気側流路(吸湿路、放湿路)
36b 排気側流路(放湿路、吸湿路)
40a 給気側モジュール(吸湿部、放湿部)
40b 排気側モジュール(放湿部、吸湿部)
40c 給気側熱交換器(冷却部(蒸発部)、加熱部(放熱部))
40d 排気側熱交換器(加熱部(放熱部)、冷却部(蒸発部))
41a 給気側流路(吸湿路、放湿路)
41b 排気側流路(放湿路、吸湿路)
46a 伝熱部材(冷却部(蒸発部)、加熱部(放熱部))
46b 伝熱部材(加熱部(放熱部)、冷却部(蒸発部))
90 溶液熱交換器(熱交換器)
103 運転制御部
10 Humidity control device
11 Absorbent circuit
11a Air supply side circulation circuit (moisture absorption side circulation circuit, moisture release side circulation circuit)
11b Exhaust side circulation circuit (moisture release side circulation circuit, moisture absorption side circulation circuit)
11c Supply / exhaust side circulation circuit (Moisture absorption / release side circulation circuit)
12 Pump (pump mechanism)
12a Supply side pump (pump mechanism)
12b Exhaust side pump (pump mechanism)
16 Supply side three-way valve (switching mechanism)
17 Exhaust side three-way valve (switching mechanism)
30a Supply side module (moisture absorption and desorption)
30b Exhaust side module (moisture release part, moisture absorption part)
35 Refrigerant circuit
36 Compressor
36a Supply air flow path (moisture absorption path, moisture release path)
36b Exhaust side flow path (moisture discharge path, moisture absorption path)
40a Supply side module (moisture absorption and desorption)
40b Exhaust side module (moisture release part, moisture absorption part)
40c Supply side heat exchanger (cooling part (evaporation part), heating part (heat radiation part))
40d Exhaust side heat exchanger (heating part (heat radiation part), cooling part (evaporation part))
41a Supply air flow path (moisture absorption path, moisture release path)
41b Exhaust side flow path (moisture release path, moisture absorption path)
46a Heat transfer member (cooling part (evaporation part), heating part (heat radiation part))
46b Heat transfer member (heating part (heat radiation part), cooling part (evaporation part))
90 Solution heat exchanger (heat exchanger)
103 Operation control unit

Claims (5)

冷却部(40c,46a,40d,46b)及び加熱部(40d,46b,40c,40a)と、
上記冷却部(40c,46a,40d,46b)で冷却される液体吸収剤が流れる吸湿路(36a,41a,36b,41b)を有し該吸湿路(36a,41a,36b,41b)の液体吸収剤が空気の水分を吸収する吸湿部(30a,40a,30b,40b)と、上記加熱部(40d,46b,40c,40a)で加熱される液体吸収剤が流れる放湿路(36b,41b,36a,41a)を有し該放湿路(36b,41b,36a,41a)の液体吸収剤が空気へ水分を放出する放湿部(30b,40b,30a,40a)と、液体吸収剤を搬送するポンプ機構(12,12a,12b)とが接続される吸収剤回路(11)と、
上記吸湿路(36a,41a,36b,41b)と放湿路(36b,41b,36a,41a)の各液体吸収剤を相互に入れ替えることなく該吸湿路(36a,41a,36b,41b)の液体吸収剤及び放湿路(36b,41b,36a,41a)の液体吸収剤でそれぞれ空気を調湿する第1運転と、上記吸湿路(36a,41a,36b,41b)と放湿路(36b,41b,36a,41a)の各液体吸収剤を相互に入れ替える第2運転とを切り換えて行う運転制御部(103)と、
上記第2運転時に、上記放湿路(36b,41b,36a,41a)から吸湿路(36a,41a,36b,41b)へ向かう液体吸収剤と、上記吸湿路(36a,41a,36b,41b)から放湿路(36b,41b,36a,41a)へ向かう液体吸収剤とを熱交換させる熱交換器(90)とを備えていることを特徴とする調湿装置。
A cooling unit (40c, 46a, 40d, 46b) and a heating unit (40d, 46b, 40c, 40a);
Liquid absorption of the moisture absorption path (36a, 41a, 36b, 41b) having a moisture absorption path (36a, 41a, 36b, 41b) through which the liquid absorbent cooled by the cooling section (40c, 46a, 40d, 46b) flows Moisture absorption part (30a, 40a, 30b, 40b) where the agent absorbs moisture from the air, and a moisture release path (36b, 41b, where the liquid absorbent heated by the heating part (40d, 46b, 40c, 40a) flows) 36a, 41a) and the moisture absorbent (30b, 40b, 30a, 40a) for releasing the moisture to the air by the liquid absorbent in the moisture channel (36b, 41b, 36a, 41a) An absorbent circuit (11) to which a pump mechanism (12, 12a, 12b) is connected;
Liquid in the moisture absorption path (36a, 41a, 36b, 41b) without replacing each liquid absorbent in the moisture absorption path (36a, 41a, 36b, 41b) and moisture release path (36b, 41b, 36a, 41a) The first operation of adjusting the air with the absorbent and the liquid absorbent of the moisture discharge path (36b, 41b, 36a, 41a), respectively, the moisture absorption path (36a, 41a, 36b, 41b) and the moisture discharge path (36b, 41b, 36a, 41a) an operation control unit (103) for switching and performing the second operation for exchanging the liquid absorbents with each other;
During the second operation, the liquid absorbent that travels from the moisture discharge path (36b, 41b, 36a, 41a) to the moisture absorption path (36a, 41a, 36b, 41b) and the moisture absorption path (36a, 41a, 36b, 41b) And a heat exchanger (90) for exchanging heat with the liquid absorbent directed toward the moisture discharge path (36b, 41b, 36a, 41a).
請求項1において、
圧縮機(36)と、周囲に上記放湿路(41b,41a)が形成されて上記加熱部を構成する放熱部(46b,46a)と、周囲に上記吸湿路(41a,41b)が形成されて上記冷却部を構成する蒸発部(46a,46b)とが接続される冷媒回路(35)を備え、
上記運転制御部(103)は、第1運転時に上記吸湿路(41a,41b)及び放湿路(41b,41a)に液体吸収剤が留まるように上記ポンプ機構(12)を停止し且つ上記圧縮機(36)を運転し、上記第2運転時に上記吸湿路(41a,41b)と放湿路(41b,41a)の各液体吸収剤を相互に入れ替えるように上記ポンプ機構(12)を運転し且つ上記圧縮機(36)を運転することを特徴とする調湿装置。
In claim 1,
The compressor (36), the moisture discharge path (41b, 41a) is formed around the heat dissipating part (46b, 46a) forming the heating part, and the moisture absorption path (41a, 41b) is formed around the compressor (36). And a refrigerant circuit (35) connected to the evaporation section (46a, 46b) constituting the cooling section,
The operation control unit (103) stops the pump mechanism (12) and compresses the liquid absorbent so that the liquid absorbent stays in the moisture absorption path (41a, 41b) and the moisture release path (41b, 41a) during the first operation. The pump mechanism (12) is operated so that the liquid absorbents in the moisture absorption path (41a, 41b) and the moisture release path (41b, 41a) are interchanged during the second operation. And the humidity control apparatus characterized by operating the said compressor (36).
請求項1において、
上記吸収剤回路(11)には、液体吸収剤の流路を、上記吸湿路(36a,41a,36b,41b)を含む閉ループ状の吸湿側循環回路(11a,11b)と上記放湿路(36b,41b,36a,41a)を含む閉ループ状の放湿側循環回路(11b,11a)とを形成する第1流路と、上記吸湿路(36a,41a,36b,41b)及び放湿路(36b,41b,36a,41a)を含む閉ループ状の吸放湿循環回路(11c)を形成する第2流路とに切り換える切換機構(16,17)が設けられ、
上記運転制御部(103)は、上記吸収剤回路(11)の流路が、上記第1運転時に第1流路となり、上記第2運転時に第2流路となるように上記切換機構(16,17)を制御することを特徴とする調湿装置。
In claim 1,
In the absorbent circuit (11), the flow path of the liquid absorbent is divided into a closed-loop moisture absorption side circulation circuit (11a, 11b) including the moisture absorption path (36a, 41a, 36b, 41b) and the moisture discharge path ( 36b, 41b, 36a, 41a) including a first flow path forming a closed loop-shaped moisture discharge side circulation circuit (11b, 11a), the moisture absorption path (36a, 41a, 36b, 41b) and the moisture discharge path ( A switching mechanism (16, 17) for switching to a second flow path forming a closed-loop moisture absorption / desorption circuit (11c) including 36b, 41b, 36a, 41a)
The operation control unit (103) includes the switching mechanism (16) so that the flow path of the absorbent circuit (11) becomes the first flow path during the first operation and becomes the second flow path during the second operation. , 17) to control the humidity control device.
請求項3において、
上記ポンプ機構(12a,12b)は、上記第2運転時における吸放湿循環回路(11c)の液体吸収剤の流量を、上記第1運転時における放湿側循環回路(11b,11a)及び吸湿側循環回路(11a,11b)の液体吸収剤の各流量よりも小さくするように構成されることを特徴とする調湿装置。
In claim 3,
The pump mechanism (12a, 12b) determines the flow rate of the liquid absorbent in the moisture absorption / desorption circuit (11c) during the second operation, and the moisture release side circuit (11b, 11a) and the moisture absorption during the first operation. A humidity control apparatus configured to be smaller than each flow rate of the liquid absorbent in the side circulation circuit (11a, 11b).
請求項1乃至4のいずれか1つにおいて、
上記熱交換器(90)は、対向流式であることを特徴とする調湿装置。
In any one of Claims 1 thru | or 4,
The humidity control apparatus, wherein the heat exchanger (90) is of a counterflow type.
JP2011282177A 2011-12-22 2011-12-22 Humidity control device Active JP5862280B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011282177A JP5862280B2 (en) 2011-12-22 2011-12-22 Humidity control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011282177A JP5862280B2 (en) 2011-12-22 2011-12-22 Humidity control device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2015254190A Division JP6065096B2 (en) 2015-12-25 2015-12-25 Humidity control device

Publications (2)

Publication Number Publication Date
JP2013130381A true JP2013130381A (en) 2013-07-04
JP5862280B2 JP5862280B2 (en) 2016-02-16

Family

ID=48908068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011282177A Active JP5862280B2 (en) 2011-12-22 2011-12-22 Humidity control device

Country Status (1)

Country Link
JP (1) JP5862280B2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH078743A (en) * 1993-06-18 1995-01-13 Daikin Ind Ltd Concentration controller for hygroscopic liquid of dehumidifier
JPH1144439A (en) * 1997-07-28 1999-02-16 Daikin Ind Ltd Air conditioner
JP2004317075A (en) * 2003-04-18 2004-11-11 Daikin Ind Ltd Humidity conditioning device
JP2005233511A (en) * 2004-02-19 2005-09-02 Dyna Air Kk Air conditioner
JP2010014390A (en) * 2008-07-07 2010-01-21 Kansai Electric Power Co Inc:The Humidity control system
JP2010078193A (en) * 2008-09-25 2010-04-08 Hachiyo Engneering Kk Desiccant air conditioning device
JP2011058714A (en) * 2009-09-09 2011-03-24 Denso Corp Humidity control ventilator
JP2011179699A (en) * 2010-02-26 2011-09-15 Dyna-Air Co Ltd Air conditioning system and method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH078743A (en) * 1993-06-18 1995-01-13 Daikin Ind Ltd Concentration controller for hygroscopic liquid of dehumidifier
JPH1144439A (en) * 1997-07-28 1999-02-16 Daikin Ind Ltd Air conditioner
JP2004317075A (en) * 2003-04-18 2004-11-11 Daikin Ind Ltd Humidity conditioning device
JP2005233511A (en) * 2004-02-19 2005-09-02 Dyna Air Kk Air conditioner
JP2010014390A (en) * 2008-07-07 2010-01-21 Kansai Electric Power Co Inc:The Humidity control system
JP2010078193A (en) * 2008-09-25 2010-04-08 Hachiyo Engneering Kk Desiccant air conditioning device
JP2011058714A (en) * 2009-09-09 2011-03-24 Denso Corp Humidity control ventilator
JP2011179699A (en) * 2010-02-26 2011-09-15 Dyna-Air Co Ltd Air conditioning system and method

Also Published As

Publication number Publication date
JP5862280B2 (en) 2016-02-16

Similar Documents

Publication Publication Date Title
JP5327372B2 (en) Humidity control device
CN100476308C (en) Humidity controller
JP3668785B2 (en) Air conditioner
JP6447770B2 (en) Ventilation system
JP3992051B2 (en) Air conditioning system
JP6065096B2 (en) Humidity control device
JP3861902B2 (en) Humidity control device
JP2013064549A (en) Air conditioning system
JP5862279B2 (en) Humidity control device
JP5821456B2 (en) Humidity control device
JP2005283041A (en) Humidity controller
JP6135130B2 (en) Humidity control device
JP5862280B2 (en) Humidity control device
JP5831082B2 (en) Humidity control device
JP5811729B2 (en) Air conditioning system
JP5887916B2 (en) Humidity control device
JP2005140372A (en) Air conditioner
CN107869808B (en) Heat recovery type membrane solution air conditioner
JP5862281B2 (en) Humidity control device
JP2005164220A (en) Air conditioner
JP2016084982A (en) Dehumidifier
JP2013064548A (en) Humidity controller
JP5811730B2 (en) Humidity control system
JP6015436B2 (en) Humidity control device
JP5786706B2 (en) Humidity control device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20141003

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20141119

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150618

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150630

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150828

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20151201

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20151214

R151 Written notification of patent or utility model registration

Ref document number: 5862280

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151