JP2003106706A - Reheat dehumidifying air conditioner - Google Patents
Reheat dehumidifying air conditionerInfo
- Publication number
- JP2003106706A JP2003106706A JP2001300615A JP2001300615A JP2003106706A JP 2003106706 A JP2003106706 A JP 2003106706A JP 2001300615 A JP2001300615 A JP 2001300615A JP 2001300615 A JP2001300615 A JP 2001300615A JP 2003106706 A JP2003106706 A JP 2003106706A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- temperature
- indoor unit
- indoor
- air conditioner
- 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.)
- Pending
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空気調和機の再熱
除湿運転を制御する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a reheat dehumidifying operation of an air conditioner.
【０００２】[0002]
【従来の技術】従来のこの種の技術では、必要な除湿量
及び到達相対湿度を得るために、図２に示されるよう
に、二方弁１および再熱除湿用キャピラリーチューブ２
を介して室内機凝縮熱交換器３と室内機蒸発熱交換器４
に２分割された室内熱交換器のうち室内機蒸発熱交換器
４の温度のみが、圧縮機周波数や室外膨張弁等により制
御されることで設定された除湿量が得られるような制御
方法となっていた。2. Description of the Related Art In the conventional technique of this type, a two-way valve 1 and a reheat dehumidifying capillary tube 2 are provided as shown in FIG. 2 in order to obtain a necessary dehumidifying amount and an achieved relative humidity.
Through the indoor unit condensation heat exchanger 3 and the indoor unit evaporation heat exchanger 4
Of the indoor heat exchanger divided into two, only the temperature of the indoor unit evaporative heat exchanger 4 is controlled by the compressor frequency, the outdoor expansion valve, etc. to obtain a set dehumidification amount. Was becoming.
【０００３】このような再熱除湿運転を行う空気調和機
の最大の利点は、室温を変化させずに必要な除湿量を得
ることが出来る点にあるが、このことは同時に設定され
た室温を実現することが困難なことを示していた。The greatest advantage of an air conditioner that performs such reheat dehumidification operation is that the required dehumidification amount can be obtained without changing the room temperature, but this is because the set room temperature is set at the same time. It showed that it was difficult to realize.
【０００４】また、この矛盾を克服するため、冷房運転
で室温を設定温度に合わせ、その後再熱除湿へモード移
行することで相対湿度を設定値に合わせる運転方法が取
られてきた。In order to overcome this contradiction, an operation method has been adopted in which the room temperature is adjusted to the set temperature in the cooling operation and then the mode is changed to reheat dehumidification to adjust the relative humidity to the set value.
【０００５】しかしこのようなモード移行が行われる
と、図２の室内機凝縮熱交換器３部分に付着した水分が
再蒸発し、室内相対湿度の再上昇や吹き出し口周りの結
露、霧吹きなどの課題があった。However, when such a mode transition is carried out, the moisture adhering to the indoor unit condensation heat exchanger 3 portion of FIG. There were challenges.
【０００６】[0006]
【発明が解決しようとする課題】上記の方法では、記述
されているように除湿量及び相対湿度を制御することを
主目的とした制御方法のため、室温を決定する顕熱を正
確にコントロールすることが困難であった。In the above method, since the control method mainly aims to control the dehumidifying amount and the relative humidity as described above, the sensible heat that determines the room temperature is accurately controlled. Was difficult.
【０００７】そこで本発明では、除湿能力を向上させな
がら顕熱をコントロール可能な制御方法を採用すること
により、露付や霧吹きといった課題を解決しつつ、相対
湿度と室温を同時にコントロールする事を目的とした。Therefore, in the present invention, by adopting a control method capable of controlling the sensible heat while improving the dehumidifying ability, it is an object to simultaneously control the relative humidity and the room temperature while solving the problems such as dew condensation and spraying. And
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に本発明は、室内機蒸発熱交換器と室内機凝縮熱交換器
の２つに分割された室内熱交換器にそれぞれ配管温度セ
ンサを取付け、室内機蒸発熱交換器温度と室内機凝縮熱
交換器温度を検出可能とし、室内機蒸発熱交換器の温度
を圧縮機周波数の制御により設定温度に保つ事で、必要
な除湿量を確保しつつ、室内機凝縮熱交換器の温度を室
外ファン回転数及び室外膨張弁を用いて一定に保つ事
で、除湿量を確保しつつ、室内機蒸発熱交換器温度と室
内機凝縮熱交換器温度の温度差で定義される顕熱をコン
トロールし、相対湿度制御と室温制御の両立を可能とし
た。In order to solve the above-mentioned problems, the present invention provides a pipe temperature sensor for each of the indoor heat exchangers divided into an indoor unit evaporation heat exchanger and an indoor unit condensation heat exchanger. Installation, making it possible to detect the indoor unit evaporation heat exchanger temperature and the indoor unit condensation heat exchanger temperature, and maintain the indoor unit evaporation heat exchanger temperature at the set temperature by controlling the compressor frequency to ensure the necessary dehumidification amount. While keeping the temperature of the indoor unit condensation heat exchanger constant by using the outdoor fan rotation speed and the outdoor expansion valve, the indoor unit evaporation heat exchanger temperature and the indoor unit condensation heat exchanger are secured while ensuring the dehumidification amount. By controlling the sensible heat defined by the temperature difference, it is possible to achieve both relative humidity control and room temperature control.
【０００９】[0009]
【発明の実施の形態】上記課題を解決するために本発明
は、室内機蒸発熱交換器と室内機凝縮熱交換器に２分割
された室内熱交換器と、分割された熱交換器それぞれに
配管温度センサを取付けた構成からなる室内機を有する
冷凍サイクルを用いた。以下に実施形態について図面を
用いて説明する。（実施の形態）図１は本発明の実施の
形態に用いる冷凍サイクルの構成を表す。以下再熱除湿
運転時の冷凍サイクルの動作について説明する。BEST MODE FOR CARRYING OUT THE INVENTION In order to solve the above problems, the present invention relates to an indoor heat exchanger divided into an indoor unit evaporation heat exchanger and an indoor unit condensation heat exchanger, and a divided heat exchanger. A refrigeration cycle having an indoor unit with a pipe temperature sensor attached was used. Embodiments will be described below with reference to the drawings. (Embodiment) FIG. 1 shows a structure of a refrigeration cycle used in an embodiment of the present invention. The operation of the refrigeration cycle during the reheat dehumidification operation will be described below.
【００１０】この冷凍サイクルでは、圧縮機７で冷媒を
圧縮、吐出し、冷房暖房を切り換える四方弁８を経由し
て、室外熱交換器９で室外ファン１０によって放熱さ
れ、冷媒は凝縮される。In this refrigeration cycle, the compressor 7 compresses and discharges the refrigerant, passes through the four-way valve 8 that switches between cooling and heating, and is radiated by the outdoor fan 10 in the outdoor heat exchanger 9 to condense the refrigerant.
【００１１】いったん室外機で凝縮された冷媒は室外機
から室外膨張弁１１を経由して室内機へ送られるが、再
熱除湿運転の場合は、室外ファン１０の回転数を低下さ
せ室外膨張弁１１を開くことで、室外での冷媒凝縮を完
全に行わない。The refrigerant once condensed in the outdoor unit is sent from the outdoor unit to the indoor unit via the outdoor expansion valve 11. However, in the case of the reheat dehumidifying operation, the rotation speed of the outdoor fan 10 is reduced to reduce the outdoor expansion valve. By opening 11, the refrigerant is not completely condensed outside the room.
【００１２】その為、室内機凝縮熱交換器１５で余熱が
室内へ放熱される。この後凝縮された冷媒は室内除湿キ
ャピ１３を通過し、減圧され、室内機蒸発熱交換器１７
で吸熱を行う。この時、同時に除湿が行われることで室
内の相対湿度が低下する。室内機蒸発熱交換器１７を経
由した冷媒は再び圧縮機７へ戻る。Therefore, the residual heat is radiated indoors in the indoor unit condensation heat exchanger 15. After this, the condensed refrigerant passes through the indoor dehumidifying capy 13 and is decompressed, and the indoor unit evaporation heat exchanger 17
To absorb heat. At this time, dehumidification is performed at the same time, so that the relative humidity in the room decreases. The refrigerant having passed through the indoor unit evaporation heat exchanger 17 returns to the compressor 7 again.
【００１３】このような冷凍サイクルにおいて、除湿量
は、ほぼ（吸い込み空気の絶対湿度−室内機蒸発熱交換
器温度）×室内風量で与えられる。そこで室内機蒸発熱
交換器温度センサ１６の検出温度が設定された温度より
も高い場合は圧縮機周波数を増加させ、低い場合は圧縮
機周波数を減少させることで室内機蒸発熱交換器温度を
一定に保ち、必要な除湿量を確保する。In such a refrigeration cycle, the dehumidification amount is approximately given by (absolute humidity of sucked air-indoor unit evaporation heat exchanger temperature) x indoor air amount. Therefore, when the temperature detected by the indoor unit evaporative heat exchanger temperature sensor 16 is higher than the set temperature, the compressor frequency is increased, and when the detected temperature is lower, the compressor frequency is decreased to keep the indoor unit evaporative heat exchanger temperature constant. To maintain the required amount of dehumidification.
【００１４】しかしこの時室温を決定する顕熱は、室内
風量×（室内機凝縮熱交換器温度−室内機蒸発熱交換器
温度）で決定される。上記のように、室内機蒸発熱交換
器温度は圧縮機周波数によって一定に保たれているた
め、室内機凝縮熱交換器温度を設定された温度にするこ
とにより、顕熱を制御することができる。However, the sensible heat that determines the room temperature at this time is determined by the indoor air flow rate × (indoor unit condensation heat exchanger temperature−indoor unit evaporation heat exchanger temperature). As described above, since the indoor unit evaporation heat exchanger temperature is kept constant by the compressor frequency, it is possible to control the sensible heat by setting the indoor unit condensation heat exchanger temperature to the set temperature. .
【００１５】そこで、本発明では室内機凝縮熱交換器温
度センサ１４を取り付けることにより、室内機凝縮熱交
換器温度を設定された温度に保つ制御を行なっている。Therefore, in the present invention, the indoor unit condensing heat exchanger temperature sensor 14 is attached to perform control to keep the indoor unit condensing heat exchanger temperature at the set temperature.
【００１６】まず、室温を設定された温度にするため、
（室内吸込温度−設定温度）から必要な顕熱を算出し、
設定室内機凝縮熱交換器温度を求める。この設定温度を
得るため、あらかじめ設定された室外機温度と室外ファ
ン回転数のマトリックスから室外ファン回転数を決定す
る。再熱除湿型の冷凍サイクルでは、室外ファンの回転
数の影響は非常に大きいため、大きく変更する場合には
適している。しかしながら、冷凍サイクルの微調整には
不向きである。First, in order to bring the room temperature to the set temperature,
Calculate the required sensible heat from (indoor suction temperature-set temperature),
Determine the set indoor unit condensing heat exchanger temperature. In order to obtain this set temperature, the outdoor fan rotation speed is determined from the preset outdoor unit temperature and outdoor fan rotation speed matrix. In the reheat dehumidification type refrigeration cycle, the influence of the number of rotations of the outdoor fan is very large, and therefore it is suitable for a large change. However, it is not suitable for fine adjustment of the refrigeration cycle.
【００１７】そこで、室外膨張弁１１を用いて、図２に
示すフローチャートに従って室内機凝縮熱交換器温度セ
ンサ１４の検出温度を設定された値になるよう制御す
る。Therefore, the outdoor expansion valve 11 is used to control the temperature detected by the indoor unit condensing heat exchanger temperature sensor 14 according to the flow chart shown in FIG.
【００１８】この時、室外膨張弁１１の開度によって室
内機蒸発熱交換器温度も影響を受けるが、冷凍サイクル
全体への影響は圧縮機周波数変更によるものよりも十分
小さく、除湿量が変化することはない。また室外膨張弁
１１の絞り過ぎによるファン結露等も発生しない。At this time, the opening of the outdoor expansion valve 11 also affects the temperature of the evaporative heat exchanger in the indoor unit, but the effect on the entire refrigeration cycle is sufficiently smaller than that by changing the compressor frequency, and the dehumidification amount changes. There is no such thing. Further, fan dew condensation due to the excessive expansion of the outdoor expansion valve 11 does not occur.
【００１９】[0019]
【発明の効果】以上のように、本発明は、室内機蒸発熱
交換器温度センサで検出した温度に応じて圧縮機周波数
を変え、室内機凝縮熱交換器温度センサで検出した温度
に応じて室外ファン回転数を変えることで、室内機蒸発
熱交換器温度と室内機凝縮熱交換器温度の温度差を所定
の値とすることにより、除湿量を確保しつつ、設定され
た室温となるように顕熱をコントロールすることを可能
とした。As described above, according to the present invention, the compressor frequency is changed according to the temperature detected by the indoor unit evaporation heat exchanger temperature sensor, and the compressor frequency is changed according to the temperature detected by the indoor unit condensation heat exchanger temperature sensor. By setting the temperature difference between the indoor unit evaporation heat exchanger temperature and the indoor unit condensation heat exchanger temperature to a predetermined value by changing the outdoor fan rotation speed, the dehumidification amount is secured and the set room temperature is reached. It was possible to control the sensible heat.
【図１】本発明の実施の形態に係る空気調和の冷凍サイ
クル図FIG. 1 is a refrigeration cycle diagram for air conditioning according to an embodiment of the present invention.
【図２】同空気調和機における制御を示すフローチャー
トFIG. 2 is a flowchart showing control in the air conditioner.
【図３】再熱除湿機能を有する空気調和機の室内機要部
構成図FIG. 3 is a block diagram of an indoor unit main part of an air conditioner having a reheat dehumidifying function.
７ 圧縮機 ８ 四方弁 ９ 室外熱交換器 １０ 室外ファン １１ 室外膨張弁 １２ 二方弁 １３ 再熱除湿用キャピラリーチューブ １４ 室内機凝縮熱交換器温度センサ １５ 室内機凝縮熱交換器 １６ 室内機蒸発熱交換器温度センサ １７ 室内機蒸発熱交換器 7 compressor 8 four-way valve 9 outdoor heat exchanger 10 outdoor fan 11 Outdoor expansion valve 12 two-way valve 13 Capillary tube for reheat dehumidification 14 Indoor unit condensation heat exchanger temperature sensor 15 Indoor unit condensation heat exchanger 16 Indoor unit evaporation heat exchanger temperature sensor 17 Indoor unit evaporation heat exchanger
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3L060 AA06 AA07 CC04 DD02 DD05 EE04 EE06 EE09 3L061 BE02 BF01 BF04 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 3L060 AA06 AA07 CC04 DD02 DD05 EE04 EE06 EE09 3L061 BE02 BF01 BF04
Claims (3)
交換器と室内機蒸発熱交換器を減圧装置で接続すること
によって、前記室内熱交換器を通過する空気に対して前
記室内蒸発熱交換器で除湿しつつ前記室内凝縮熱交換器
で加熱することができるよう構成されたヒートポンプ式
空調機において、室内機蒸発熱交換器温度センサで検出
した温度に応じて圧縮機周波数が制御され、また室内機
凝縮熱交換器温度センサで検出した温度に応じて室外フ
ァン回転数が制御されるとで室内機蒸発熱交換器温度と
室内機凝縮熱交換器温度の温度差を所定の範囲量にコン
トロールすることを特徴とした再熱除湿式空気調和機。1. The indoor heat exchanger is divided into two, and the indoor unit condensation heat exchanger and the indoor unit evaporation heat exchanger are connected by a decompression device, so that the indoor air is passed with respect to air passing through the indoor heat exchanger. In a heat pump type air conditioner configured to be heated by the indoor condensation heat exchanger while being dehumidified by the evaporation heat exchanger, the compressor frequency is controlled according to the temperature detected by the indoor unit evaporation heat exchanger temperature sensor. In addition, when the outdoor fan speed is controlled according to the temperature detected by the indoor unit condensation heat exchanger temperature sensor, the temperature difference between the indoor unit evaporation heat exchanger temperature and the indoor unit condensation heat exchanger temperature is within a predetermined range. A reheat dehumidifying air conditioner characterized by controlling the amount.
縮熱交換器温度を所定温度範囲になるように制御するこ
とを特徴とする請求項１記載の再熱除湿式空気調和機。2. The reheat dehumidifying air conditioner according to claim 1, wherein an indoor expansion heat exchanger temperature is controlled to be within a predetermined temperature range by using a variable capacity outdoor expansion valve.
の温度差を、室外ファンと室外膨張弁を用いて制御する
ことを特徴とした請求項１記載の再熱除湿式空気調和
機。3. The reheat dehumidifying air conditioner according to claim 1, wherein the temperature difference between the indoor suction temperature and the indoor unit condensation heat exchanger temperature is controlled by using an outdoor fan and an outdoor expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001300615A JP2003106706A (en) | 2001-09-28 | 2001-09-28 | Reheat dehumidifying air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001300615A JP2003106706A (en) | 2001-09-28 | 2001-09-28 | Reheat dehumidifying air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003106706A true JP2003106706A (en) | 2003-04-09 |
Family
ID=19121160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001300615A Pending JP2003106706A (en) | 2001-09-28 | 2001-09-28 | Reheat dehumidifying air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003106706A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014605A (en) * | 2006-07-10 | 2008-01-24 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2008025932A (en) * | 2006-07-24 | 2008-02-07 | Fujitsu General Ltd | Control method of air conditioner |
| KR100816908B1 (en) * | 2006-05-20 | 2008-03-26 | 엘지전자 주식회사 | Air conditioner |
| US10274213B2 (en) | 2017-05-01 | 2019-04-30 | Haier Us Appliance Solutions, Inc. | Air conditioning system including a hybrid reheat loop |
| US10451297B2 (en) | 2017-05-01 | 2019-10-22 | Haier Us Appliance Solutions, Inc. | Air conditioning system including a reheat loop |
| CN110848828A (en) * | 2019-11-28 | 2020-02-28 | 广东美的制冷设备有限公司 | Dehumidification device, dehumidification control method, and storage medium |
| CN113959110A (en) * | 2021-09-30 | 2022-01-21 | 珠海格力电器股份有限公司 | Refrigeration system and dehumidification control method |
| CN114322222A (en) * | 2021-12-16 | 2022-04-12 | 海信（山东）空调有限公司 | Air conditioner, control method of air conditioner, and computer-readable storage medium |
-
2001
- 2001-09-28 JP JP2001300615A patent/JP2003106706A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100816908B1 (en) * | 2006-05-20 | 2008-03-26 | 엘지전자 주식회사 | Air conditioner |
| JP2008014605A (en) * | 2006-07-10 | 2008-01-24 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2008025932A (en) * | 2006-07-24 | 2008-02-07 | Fujitsu General Ltd | Control method of air conditioner |
| US10274213B2 (en) | 2017-05-01 | 2019-04-30 | Haier Us Appliance Solutions, Inc. | Air conditioning system including a hybrid reheat loop |
| US10451297B2 (en) | 2017-05-01 | 2019-10-22 | Haier Us Appliance Solutions, Inc. | Air conditioning system including a reheat loop |
| CN110848828A (en) * | 2019-11-28 | 2020-02-28 | 广东美的制冷设备有限公司 | Dehumidification device, dehumidification control method, and storage medium |
| CN113959110A (en) * | 2021-09-30 | 2022-01-21 | 珠海格力电器股份有限公司 | Refrigeration system and dehumidification control method |
| CN114322222A (en) * | 2021-12-16 | 2022-04-12 | 海信（山东）空调有限公司 | Air conditioner, control method of air conditioner, and computer-readable storage medium |
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