JPH0349007B2 - - Google Patents
Info
- Publication number
- JPH0349007B2 JPH0349007B2 JP59045442A JP4544284A JPH0349007B2 JP H0349007 B2 JPH0349007 B2 JP H0349007B2 JP 59045442 A JP59045442 A JP 59045442A JP 4544284 A JP4544284 A JP 4544284A JP H0349007 B2 JPH0349007 B2 JP H0349007B2
- Authority
- JP
- Japan
- Prior art keywords
- air volume
- heating capacity
- electronic heater
- indoor
- reheater
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000007791 dehumidification Methods 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は除湿機能を有する空気調和装置に係
り、特に除湿運転により室内の温度が低下するの
を防ぐ構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an air conditioner having a dehumidifying function, and particularly to a structure that prevents a decrease in indoor temperature due to dehumidifying operation.
従来の除湿機能を有する空気調和装置において
は、除湿運転により部屋の温度が低下するのを防
止するため、次のような方式を採用している。
In conventional air conditioners having a dehumidifying function, the following method is adopted to prevent the room temperature from decreasing due to the dehumidifying operation.
(1) 室内風量を低下させて顕熱比を小さくし、で
きるだけ部屋の温度を下げないよう除湿する。(1) Decrease the indoor air volume to reduce the sensible heat ratio and dehumidify to keep the room temperature as low as possible.
(2) 再熱器を設け、除湿運転により冷やされた空
気を前記再熱器で加熱して吹出させる。この再
熱器としては、冷凍サイクルの高温液冷媒を熱
源とするものと、暖房運転時の補助熱源となる
電気ヒータを使用するものとがある。(2) A reheater is provided, and the air cooled by the dehumidifying operation is heated by the reheater and blown out. There are two types of reheaters: one that uses high-temperature liquid refrigerant from a refrigeration cycle as a heat source, and the other that uses an electric heater that serves as an auxiliary heat source during heating operation.
しかし、前述した空気調和装置においては、次
のような欠点があつた。 However, the above-mentioned air conditioner had the following drawbacks.
(a) (1)項の構成では、いくら風量を低下させても
顕熱比を零にすることは不可能であり、部屋の
温度低下が避けられない。(a) With the configuration in item (1), it is impossible to reduce the sensible heat ratio to zero no matter how much the air volume is reduced, and a drop in room temperature is unavoidable.
(b) (2)項のうち、液冷媒を熱源とする再熱器を用
いたものでは、再熱器としての熱交換器、冷凍
サイクル切換用のバルブ等が必要となり、コス
ト高となる。また電気ヒータを使用したもので
は、該電気ヒータの容量を暖房時に合せて決定
しているため、除湿運転時に再熱器として容量
がマツチせず、容量不足となつたり、容量過多
となつて、ON−OFF制御が必要となる等の問
題が生ずる。(b) Among items in (2), those using a reheater that uses liquid refrigerant as a heat source require a heat exchanger as a reheater, a valve for switching the refrigeration cycle, etc., resulting in high costs. In addition, in the case of an electric heater, the capacity of the electric heater is determined according to the heating operation, so the capacity does not match as a reheater during dehumidification operation, resulting in insufficient capacity or overcapacity. Problems arise, such as the need for ON-OFF control.
(c) 室内の低下を極力おさえるため室内風量を低
下させると、中間期など室温が低い状態で除湿
運転を行なつた場合、蒸発温度が低下して室内
熱交換器に着霜が生じ、このまゝ運転を継続す
ると除湿ができなくなるばかりでなく、液バツ
ク運転となり圧縮機の故障原因にもなる。(c) If the indoor air volume is reduced in order to suppress the indoor temperature drop as much as possible, if dehumidification is performed when the room temperature is low, such as during the middle of the year, the evaporation temperature will drop and frost will form on the indoor heat exchanger, causing this to occur. If the operation continues, not only will dehumidification not be possible, but liquid backup will occur, which may cause the compressor to malfunction.
本発明の目的は、除湿運転による室温の低下を
防止でき、しかも広い室温範囲で着霜させること
なく除湿運転が可能な空気調和装置を提供するこ
とにある。
An object of the present invention is to provide an air conditioner that can prevent a drop in room temperature due to dehumidifying operation and can also perform dehumidifying operation over a wide room temperature range without causing frost formation.
本発明は、再熱器として、風量の増減に応じて
加熱能力を増減する正特性半導体から電子ヒータ
を用い、その電子ヒータの加熱能力特性を、室内
風量変化時の冷房顕熱量変化とほゞ等しくなるよ
うに選定し、中間期などの低い状態では室内風量
を大きくして蒸発温度を高くし、室内熱交換器に
霜すことなく除湿を行うと共に、室内風量増によ
る電子ヒータの加熱能力の増加にて室温の低下を
防止したものである。
The present invention uses, as a reheater, an electronic heater made of a positive characteristic semiconductor whose heating capacity increases or decreases in accordance with the increase or decrease in air volume, and the heating capacity characteristics of the electronic heater are approximately equal to changes in the amount of cooling sensible heat when the indoor air volume changes. In low conditions such as mid-season, the indoor air volume is increased to raise the evaporation temperature, dehumidifying the indoor heat exchanger without causing frost, and increasing the heating capacity of the electronic heater by increasing the indoor air volume. This is to prevent a drop in room temperature.
以下、本発明の実施例を図面により説明する。
第１図は本発明による空気調和装置のサイクル系
統図を示している。この空気調和装置は、圧縮機
１、凝縮器２、減圧器３、蒸発器４およびこれら
の接続配管から構成される冷凍サイクルと、除湿
運転時に使用する再熱器としての電子ヒータ５と
を備えている。前記電子ヒータ５は、風量の増減
に応じて加熱能力を増減する正特性半導体からな
つている。そして、第２図に示すように、前記電
子ヒータの加熱能力特性イを、室内風量変化時の
冷房顕熱特性ロとほゞ等しくなるように選定して
いる。ハは冷房特性を示している。尚、電子ヒー
タ５の加熱能力と消費電力は比例関係にある。
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a cycle diagram of an air conditioner according to the present invention. This air conditioner includes a refrigeration cycle consisting of a compressor 1, a condenser 2, a pressure reducer 3, an evaporator 4, and their connecting pipes, and an electronic heater 5 as a reheater used during dehumidification operation. ing. The electronic heater 5 is made of a positive characteristic semiconductor whose heating capacity increases or decreases in response to an increase or decrease in air volume. As shown in FIG. 2, the heating capacity characteristic (a) of the electronic heater is selected to be approximately equal to the cooling sensible heat characteristic (b) when the indoor air volume changes. C indicates cooling characteristics. Note that the heating capacity of the electronic heater 5 and the power consumption are in a proportional relationship.
次に本発明の作用について説明する。 Next, the operation of the present invention will be explained.
通常の除湿運転時はV1の風量としできるだけ
低風量で、消費費力の少ない除湿運転を行う。ま
た中間期など室温が低く室内熱交換器に着霜の恐
れがある場合には、室内風量をV2として除湿運
転を行う。この風量切換は室内熱交換器（蒸発
器）の温度あるいは吸込空気温度を検知して行
う。尚、室内風量変化は一度にV1からV2に移行
させてもよく、またステツプ的に変化させるよう
にしてもよい。 During normal dehumidification operation, the air volume is set to V 1 , and the air volume is as low as possible to perform dehumidification operation with low power consumption. In addition, when the room temperature is low during the middle of the year and there is a risk of frost forming on the indoor heat exchanger, dehumidifying operation is performed with the indoor air volume set to V2 . This air volume switching is performed by detecting the temperature of the indoor heat exchanger (evaporator) or the temperature of the intake air. Note that the indoor air volume may be changed from V1 to V2 all at once, or may be changed in steps.
従つて、本発明による空気調和装置では、室内
風量変化時の冷房顕熱量変化に近似して電子ヒー
タ５の加熱能力を変化させられるので、広い室温
範囲で着霜することなく、また室温を低下させる
ことなく快適な除湿運転が可能となる。 Therefore, in the air conditioner according to the present invention, since the heating capacity of the electronic heater 5 can be changed to approximate the change in the amount of cooling sensible heat when the indoor air volume changes, the room temperature can be lowered without forming frost over a wide room temperature range. Comfortable dehumidification operation is possible without causing any problems.
第３図は室内吸込空気温度に応じて室内風量を
変化させ、中間期などに室内熱交換器の着霜を防
止し、室内変化のない快適な除湿運転を行える運
転モードの一例を示している。 Figure 3 shows an example of an operation mode that changes the indoor air volume according to the indoor air intake temperature, prevents frost formation on the indoor heat exchanger during intermediate periods, and provides comfortable dehumidification operation without any indoor changes. .
本発明によれば、室温を低下させることなく、
かつ広い室温範囲で着霜することなく快適な除湿
運転を行える。
According to the present invention, without lowering the room temperature,
It also allows comfortable dehumidification operation over a wide room temperature range without frost formation.
第１図は本発明による空気調和装置のサイクル
系統図、第２図は室内風量と冷房能力との関係お
よび電子ヒータの加熱能力と室内風量との関係を
示す特性図、第３図は本発明による運転モードの
一例を示す図である。
１……圧縮機、２……凝縮器、３……減圧器、
４……蒸発器、５……電子ヒータ。
Figure 1 is a cycle diagram of the air conditioner according to the present invention, Figure 2 is a characteristic diagram showing the relationship between indoor air volume and cooling capacity, and the relationship between the heating capacity of the electronic heater and indoor air volume, and Figure 3 is a diagram showing the relationship between indoor air volume and indoor air volume. FIG. 1...Compressor, 2...Condenser, 3...Compressor,
4...evaporator, 5...electronic heater.
Claims (1)
なる冷凍サイクルと、除湿運転時に使用する再熱
器とを備えた空気調和装置において、前記再熱器
として、風量の増減に応じて加熱能力を増減する
正特性半導体からなる電子ヒータを用い、その電
子ヒータの加熱能力特性を、室内風量変化時の冷
房顕熱量変化とほゞ等しくなるように選定したこ
とを特徴とする空気調和装置。1. In an air conditioner equipped with a refrigeration cycle consisting of a compressor, a condenser, a pressure reducer, an evaporator, etc., and a reheater used during dehumidification operation, the heating capacity of the reheater increases or decreases depending on the increase or decrease in air volume. An air conditioner using an electronic heater made of a positive characteristic semiconductor that increases or decreases the heating capacity of the electronic heater, the heating capacity characteristics of the electronic heater being selected so as to be approximately equal to the change in the amount of cooling sensible heat when the indoor air volume changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59045442A JPS60191138A (en) | 1984-03-12 | 1984-03-12 | Air conditioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59045442A JPS60191138A (en) | 1984-03-12 | 1984-03-12 | Air conditioning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60191138A JPS60191138A (en) | 1985-09-28 |
| JPH0349007B2 true JPH0349007B2 (en) | 1991-07-26 |
Family
ID=12719439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59045442A Granted JPS60191138A (en) | 1984-03-12 | 1984-03-12 | Air conditioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60191138A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010185597A (en) * | 2009-02-10 | 2010-08-26 | Mitsubishi Electric Corp | Dehumidifier |
-
1984
- 1984-03-12 JP JP59045442A patent/JPS60191138A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60191138A (en) | 1985-09-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |