JPH03152331A - Heater over-heating protection control device for air conditioner - Google Patents
Heater over-heating protection control device for air conditionerInfo
- Publication number
- JPH03152331A JPH03152331A JP1291516A JP29151689A JPH03152331A JP H03152331 A JPH03152331 A JP H03152331A JP 1291516 A JP1291516 A JP 1291516A JP 29151689 A JP29151689 A JP 29151689A JP H03152331 A JPH03152331 A JP H03152331A
- Authority
- JP
- Japan
- Prior art keywords
- heater
- temperature
- air
- air conditioner
- compressor
- 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
- 238000013021 overheating Methods 0.000 title abstract description 4
- 238000001514 detection method Methods 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 abstract description 9
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000007791 dehumidification Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 241000862969 Stella Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
この発明は、空気調和装置のヒータ過熱保護制御袋；δ
、特にヒータを再熱器として除湿運転を行う空気調和装
置のヒータ過熱防止に関するものである。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a heater overheat protection control bag for an air conditioner; δ
In particular, the present invention relates to prevention of heater overheating of an air conditioner that performs dehumidification operation using a heater as a reheater.
（従来の技術〕
従来、この種の装置として、例えば特開昭６２−１６９
９５４号公報に示されたものが知られている。(Prior art) Conventionally, as this type of device, for example,
The one shown in Japanese Patent No. 954 is known.
第１図はこのビータ再熱式除湿運転を行う空気調和装置
の制御ブロック図である。図において、１は圧縮機、２
は凝縮器、３は減圧装置、４は蒸発器、５は空気調和装
置の室内機、６はビータ、７は送風機、８は室温検出部
、９はこの室温検出部８で検出した室温と設定温度とを
比較する温度比較部、！Ｏは前記圧縮機の運転・停止を
制御する圧ｌ１ＩＩｌａ制御部、１１は温度比較部９の
比較結果に応じて圧縮機１の運転・停止とビータの通電
・非通電を制御する運転制御部、１２は室内機５に吸い
込まれる空気のほこりを取り除くフィルタである。FIG. 1 is a control block diagram of an air conditioner that performs this beater reheat dehumidification operation. In the figure, 1 is a compressor, 2
is a condenser, 3 is a pressure reducing device, 4 is an evaporator, 5 is an indoor unit of an air conditioner, 6 is a beater, 7 is a blower, 8 is a room temperature detection section, 9 is the room temperature detected by this room temperature detection section 8 and the setting Temperature comparison section, which compares the temperature! 0 is a pressure l1lla control unit that controls the operation and stop of the compressor; 11 is an operation control unit that controls the operation and stop of the compressor 1 and the energization and de-energization of the beater according to the comparison result of the temperature comparison unit 9; 12 is a filter that removes dust from the air sucked into the indoor unit 5.
次に、動作について説明する。除湿運転の場合、顕熱比
を抑えて除湿能力を向上させるため、送風機７の風量を
比較的低く抑えながら、温度比較部９において、室温検
出部８で検出した室温Ｔａと設定温度Ｔｏとを比較し、
運転−制御部１１はその比較結果に応じて圧縮機１の運
転・停止］−とヒータ６の通′１ｔ−４１通電を、環境
に対して適当な状態にコントロールする。Ｉ］縮機ｌを
吐出させた高／：ｍ’＋・高月のガス冷媒は、凝縮；Ｓ
２て放熱して常湿・！：；、圧の液冷媒となり、減圧装
置３を通ることによって低温のニア相冷媒となり、送風
機７によってフィルタ１２を通して室内機５に取込まれ
た室内の５と気と蒸発品４で熱交換することによって蒸
発し、圧縮機１に戻るサイクルを形成する。 方、蒸発
品４で低温の冷媒と熱交換され、除湿かつ冷却された空
気はヒータ６で＋Ｔ＞加熱され、室内に吹出されるよう
になっていた。Next, the operation will be explained. In the case of dehumidification operation, in order to suppress the sensible heat ratio and improve the dehumidification ability, the air volume of the blower 7 is kept relatively low, and the temperature comparison section 9 compares the room temperature Ta detected by the room temperature detection section 8 with the set temperature To. Compare,
The operation control section 11 controls the operation/stop of the compressor 1 and the energization of the heater 6 to a state appropriate for the environment according to the comparison result. I] The gas refrigerant discharged from the condenser l is condensed;
2. Dissipates heat and maintains humidity! It becomes a liquid refrigerant at a pressure of 0.25 to 3.0, becomes a low-temperature near-phase refrigerant by passing through the pressure reducing device 3, and exchanges heat with the air and air in the room 5 taken into the indoor unit 5 by the blower 7 through the filter 12, and the evaporated product 4. This forms a cycle of evaporation and return to the compressor 1. On the other hand, the dehumidified and cooled air that undergoes heat exchange with the low-temperature refrigerant in the evaporator 4 is heated by +T> by the heater 6 and is blown into the room.
（発明か解決しようとする１１題〕
しかしながら、従来の空気調和装置は、以トのように構
成されていたので、長期間使用すると、フィルタ１２に
空気中のほこりか次第に堆積してｌＩ詰まりを生しる。(11 problems to be solved by the invention) However, since the conventional air conditioner was configured as shown below, when used for a long period of time, dust in the air gradually accumulates on the filter 12, causing clogging. Live.
そのため、風！１１が著しく低下し、ヒータ６の表面温
度が上昇してヒータ６自体が変質・焼損したり、空気を
過熱しすぎて室内機５の構造体を変形させてしまうとか
、冷媒ガスが漏れて空気調和装置の冷却能力を低ドさせ
るといった問題があった。Therefore, the wind! 11 decreases significantly, the surface temperature of the heater 6 rises and the heater 6 itself deteriorates or burns out, the air is overheated and the structure of the indoor unit 5 is deformed, or refrigerant gas leaks and the air There was a problem that the cooling capacity of the conditioning device was reduced.
この２つの現象は、室温には影響しないので、室温検出
部しかなかった従来の空気調和装置では巽常の検出がで
きなかった。したがって、表面温度が上昇し紡い加熱能
力の大きなヒータを塔載して充分な再熱効果を（：Ｉら
れないために、結局、吹出空気温度が低下して、満足な
除湿運転はできなくなってしまうという難点があった。Since these two phenomena do not affect the room temperature, conventional air conditioners that only had a room temperature detection section could not routinely detect them. Therefore, the surface temperature rises and it is not possible to install a heater with a large spinning heating capacity to achieve a sufficient reheating effect (:I), which ultimately causes the temperature of the blown air to drop, making it impossible to perform a satisfactory dehumidifying operation. The problem was that it was difficult to store.
この発明は、このような問題を解決するためになされた
もので、フィルタの「ｉ詰まりや冷媒ガス漏れが生じて
も、ヒータ自体や室内機の構造体に異常をきたさない空
気調和装置のヒータ過熱保護ｉｌｌ ｍを１［Ｉること
を［Ｊ的としている。This invention was made in order to solve these problems, and is designed to provide a heater for air conditioners that does not cause any abnormality to the heater itself or the structure of the indoor unit even if the filter becomes clogged or refrigerant gas leaks. It is assumed that the overheat protection ill m is 1[I].
（３題を解決するための手段〕
このため、この発明に係わる空気調和装置のヒータ過熱
保護ル１ｍは、圧縮機、凝縮器、減圧装置、蒸発器を環
状に接続した冷凍サイクルと、面記然発器と熱交換した
後の空気を加熱するヒータを備えた空気調和装置におい
て、吹出空気温度検１１１部と、該検出温度と設定温度
を比較する温度比較部と、面記圧縮機の運転・停止１を
ル］御する圧縮機制御部と、温度比較部と圧縮機制御部
の出力によっ”〔ヒータ通電のり否を判定する保護判定
部とを備えたものである。(Means for Solving the Three Problems) Therefore, the heater overheating protector 1m of the air conditioner according to the present invention has a refrigeration cycle in which a compressor, a condenser, a pressure reducing device, and an evaporator are connected in a ring, and a In an air conditioner equipped with a heater that heats the air after heat exchange with a natural generator, a blowout air temperature detection section 111, a temperature comparison section that compares the detected temperature and a set temperature, and a surface compressor operation - It is equipped with a compressor control unit that controls the stop 1, and a protection determination unit that determines whether the heater is energized or not based on the outputs of the temperature comparison unit and the compressor control unit.
（作用〕
この発明に係わる空気調和装置のヒータ過熱保護制御は
、吹田空気温度が設定温度より高い場合はヒータを非道
′１ｔに規制すると共に、その後、何等かの要因で圧縮
機か停＋ｈするまでその規制を継続するように働く。(Operation) The heater overheat protection control of the air conditioner according to the present invention regulates the heater to an unreasonable level of 1t when the Suita air temperature is higher than the set temperature, and then stops the compressor due to some reason. We will work to continue these regulations until the end.
（実施例〕
以ドに、この発明の一実施例の空気調和装置のヒータ過
熱保護装置を図に基づいて説明する。(Embodiment) Hereinafter, a heater overheat protection device for an air conditioner according to an embodiment of the present invention will be described based on the drawings.
第１図はこの発明の一実施例の空気調和装置のヒータ保
護装置の制御ブロック図である。第１図において、２０
は吹田空気温度検出部、２１は該検出温度Ｔｂと設定温
度Ｔｘを比較する温度比較部、２２はこの温度比較部２
１と圧縮機ル１０１！部１０の出力によってヒータ通電
のｉ＋Ｊ否を↑１］定する保護判定部である。FIG. 1 is a control block diagram of a heater protection device for an air conditioner according to an embodiment of the present invention. In Figure 1, 20
2 is a Suita air temperature detection section, 21 is a temperature comparison section that compares the detected temperature Tb and the set temperature Tx, and 22 is this temperature comparison section 2.
1 and compressor 101! This is a protection determination unit that determines whether or not the heater is energized (↑1) based on the output of the unit 10.
次に５動作について、第２図に示した制御フローチャー
トを参照して説明する。Next, the fifth operation will be explained with reference to the control flowchart shown in FIG.
まず、除湿運転がスタートすると（ステップ３１）、運
転制御部１ヱでそのときの環境に合わせピータの通電・
非通電を選択する（ステップ３２）。First, when the dehumidifying operation starts (step 31), the operation control section 1
De-energization is selected (step 32).
ついで、空気調和装置を長期間使用しフィルタ１２に空
気中のほこりが堆積して［１詰まりを生じて風量が著し
く低下したり、冷媒ガスが漏れて冷却能力が低下すると
すると、ヒータ６の表面温度が上昇するため、ヒータ６
と熱交換される吹出空気温度Ｔｂも同時に上昇する。Next, if the air conditioner is used for a long period of time and dust in the air accumulates on the filter 12, resulting in clogging and a significant decrease in air volume, or if refrigerant gas leaks and the cooling capacity decreases, the surface of the heater 6 may become clogged. As the temperature rises, heater 6
At the same time, the temperature Tb of the blown air with which heat is exchanged with increases.
そして、室内機５の風路内に設けた吹出空気温度検出部
２０で吹出空気温度Ｔｂを検出しくステップ３４）、温
度比較部２１で設定温度Ｔｘと比較しくステップ３５）
、Ｔｂ＞Ｔｘであれば、保護判定部２２は運転異常と判
断し運転制御部ｌｌの指令に係わらず、ヒータ６への通
電を禁止する（ステラ３５）。ヒータ６の通′−ｔ・非
道′１ｔのハンチングを防＋ｔするため、Ｔｂ＞Ｔｘと
なり１− ｉＪｊ ’−’Ｌを禁１１−すると吹出う；
ｄ気温度Ｔｂがドがるが、Ｔｂ＜Ｔｘとなっただけでは
通電禁止は解除せず、何等かの要因で！Ｌ縮機ｔ制御部
１０がハ縮機１を停止ｌ−するまで、保護判定部２２は
ヒータ６への通電禁止を一続する（ステップ３６）。除
湿運転を終ｒするまで以ｌ−ステップ３２がらステップ
３６を綬り人す（ステップ３７）。Then, the blown air temperature detection unit 20 provided in the air path of the indoor unit 5 detects the blown air temperature Tb (step 34), and the temperature comparison unit 21 compares it with the set temperature Tx (step 35).
, if Tb>Tx, the protection determination unit 22 determines that the operation is abnormal and prohibits energization of the heater 6 regardless of the command from the operation control unit 11 (Stella 35). In order to prevent +t from hunting of the heater 6's normal and abnormal'1t, Tb>Tx and 1- iJj '-'L is inhibited 11- and it blows out;
dThe air temperature Tb drops, but the prohibition of energization is not lifted just because Tb<Tx, but for some reason! The protection determining unit 22 continues to prohibit energization of the heater 6 until the L compressor t control unit 10 stops the C compressor 1 (step 36). Steps 32 and 36 are repeated until the dehumidifying operation is completed (step 37).
（発明の効果〕
以にに、説明してきたように、この発明によれば、圧縮
機１制御部、吹田空気温度検出部、温度比較部、保護〒
す足部を備えたことにより、吹田空気温度を検出し異常
な温度土シｔに対してヒータへの通電を規制することが
できるため、フィルタの１１詰まりや冷媒ガスの漏れが
生じた場合でも、ヒータか過熱して変質・焼損したり、
室内機の構造体か変形するといった問題を未然に防１１
−することか可能となったたけでなく、加熱能力の大き
なヒータを搭載して充分な再熱効果を１１することかで
きるため、除湿能力を確保しつつ吹田空気温度が低下さ
せない除湿運転を提供することか可能となった。(Effects of the Invention) As explained above, according to the present invention, the compressor 1 control section, the Suita air temperature detection section, the temperature comparison section, the protection
By having a foot part, it is possible to detect the Suita air temperature and restrict energization to the heater in case of abnormal temperature, even if the filter is clogged or refrigerant gas leaks. , the heater may overheat and deteriorate or burn out.
Preventing problems such as deformation of the indoor unit structure11
- Not only is it now possible to do this, but it is also equipped with a heater with a large heating capacity to provide a sufficient reheating effect, providing dehumidification operation that does not lower Suita air temperature while ensuring dehumidification capacity. It became possible.
そして、通電規制解除を、圧縮機が停市したときと定め
たことによって、ビータの通電・非通電のハンチングも
生しないので、ヒータ川の接点寿命といったイ１−頼性
も向上する。Furthermore, by setting the energization restriction to be lifted when the compressor is stopped, there is no hunting between energization and de-energization of the beater, which improves reliability such as the life of the heater contacts.
４．１ヌ１面の筒中な説明
第１図は本発明の一実施例によるヒータ過熱防り制御を
備えた空気調和装置の制御ブロック図である。第２図は
その制御フローチャー）・、第３図はヒータ１１＃熱時
除湿運転を行う従来の空気調和装置の１制御ブロック図
である。4.1 Detailed Description of Page 1 FIG. 1 is a control block diagram of an air conditioner equipped with heater overheat prevention control according to an embodiment of the present invention. FIG. 2 is a control flowchart thereof) and FIG. 3 is a control block diagram of a conventional air conditioner that performs a dehumidifying operation when the heater 11# is hot.
図において、１は圧縮機、２は凝縮器、３２は減１Ｆ装
置、４は蒸発器、６はヒータ、１０は圧縮機制御部、２
０は吹出空気温度検出部、２１はＪム検出温度Ｔｂと設
定温度Ｔｘを比較する温度比較部、２２は保護判定部で
ある。In the figure, 1 is a compressor, 2 is a condenser, 32 is a 1F reduction device, 4 is an evaporator, 6 is a heater, 10 is a compressor control unit, 2
0 is a blowing air temperature detection section, 21 is a temperature comparison section that compares the detected temperature Tb and the set temperature Tx, and 22 is a protection determination section.
なお、図中、同一・符号は同一部分または相当部分を示
す。In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
冷凍サイクルと、前記蒸発器と熱交換したのちの空気を
加熱するヒータを備えた空気調和装置であって、吹出空
気温度検出部と、該検出温度と設定温度を比較する温度
比較部と、前記圧縮機の運転・停止を制御する圧縮機制
御部と、温度比較部と圧縮機制御部の出力によってヒー
タ通電の可否を判定する保護判定部とを備えたことを特
徴とする空気調和装置のヒータ過熱保護制御装置。An air conditioner comprising a refrigeration cycle in which a compressor, a condenser, a pressure reducing device, and an evaporator are connected in a ring, and a heater that heats the air after exchanging heat with the evaporator, the air conditioner comprising: a blowout air temperature detection section; , a temperature comparison unit that compares the detected temperature and a set temperature; a compressor control unit that controls operation/stop of the compressor; and protection that determines whether or not the heater is energized based on the outputs of the temperature comparison unit and the compressor control unit. 1. A heater overheat protection control device for an air conditioner, comprising: a determining section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1291516A JPH03152331A (en) | 1989-11-09 | 1989-11-09 | Heater over-heating protection control device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1291516A JPH03152331A (en) | 1989-11-09 | 1989-11-09 | Heater over-heating protection control device for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03152331A true JPH03152331A (en) | 1991-06-28 |
Family
ID=17769905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1291516A Pending JPH03152331A (en) | 1989-11-09 | 1989-11-09 | Heater over-heating protection control device for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03152331A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014184369A (en) * | 2013-03-22 | 2014-10-02 | Corona Corp | Dehumidifier |
| CN105890116A (en) * | 2016-04-27 | 2016-08-24 | 芜湖美智空调设备有限公司 | Detection method and system for leakage of refrigerant of air conditioner |
| CN109114747A (en) * | 2018-08-03 | 2019-01-01 | 奥克斯空调股份有限公司 | A kind of lack of fluorine of air-conditioners detection method, detection system and air-conditioning |
| CN113418273A (en) * | 2021-06-30 | 2021-09-21 | 珠海拓芯科技有限公司 | Electrical heating relay thermal fault detection method and air conditioner |
-
1989
- 1989-11-09 JP JP1291516A patent/JPH03152331A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014184369A (en) * | 2013-03-22 | 2014-10-02 | Corona Corp | Dehumidifier |
| CN105890116A (en) * | 2016-04-27 | 2016-08-24 | 芜湖美智空调设备有限公司 | Detection method and system for leakage of refrigerant of air conditioner |
| CN109114747A (en) * | 2018-08-03 | 2019-01-01 | 奥克斯空调股份有限公司 | A kind of lack of fluorine of air-conditioners detection method, detection system and air-conditioning |
| CN109114747B (en) * | 2018-08-03 | 2022-07-12 | 奥克斯空调股份有限公司 | Air conditioner fluorine deficiency detection method and system and air conditioner |
| CN113418273A (en) * | 2021-06-30 | 2021-09-21 | 珠海拓芯科技有限公司 | Electrical heating relay thermal fault detection method and air conditioner |
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