JPS5993138A - Air conditioning device - Google Patents
Air conditioning deviceInfo
- Publication number
- JPS5993138A JPS5993138A JP57202643A JP20264382A JPS5993138A JP S5993138 A JPS5993138 A JP S5993138A JP 57202643 A JP57202643 A JP 57202643A JP 20264382 A JP20264382 A JP 20264382A JP S5993138 A JPS5993138 A JP S5993138A
- Authority
- JP
- Japan
- Prior art keywords
- defrosting
- heat exchanger
- temperature
- outdoor heat
- point
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は冷房・暖房兼用の空気調和機に係シ。[Detailed description of the invention] The present invention relates to an air conditioner for both cooling and heating.
特に暖房運転時、外気温度が低くなると室外側熱交換器
に鞘が付き外気との熱交換量が減少し、暖房能力が低下
してくる。そこで、室外側熱交換器に霜が付いた場合、
霜取に関するものである。Particularly during heating operation, when the outside air temperature becomes low, the outdoor heat exchanger is covered with a sheath, reducing the amount of heat exchanged with the outside air, and the heating capacity decreases. Therefore, if frost forms on the outdoor heat exchanger,
It is related to defrosting.
従来、霜取の方式としては、まず霜取開始の方法として
は、タイマー（１）などで一定時間運転したら霜取に入
る（タイマー開始方式）、室外側熱交換器（２）に温度
検知用のサーモを喉伺り、室外側熱交換器に箱が付き、
ある温度以下になったら霜取に入る（サーモ開始方式）
などがある。Conventionally, the defrosting method has been to start defrosting after a certain period of time using a timer (1), etc. (timer start method), and to use a temperature detection device on the outdoor heat exchanger (2). A box is attached to the outdoor heat exchanger,
Defrost begins when the temperature drops below a certain level (thermo start method)
and so on.
また、霜取終了の方法としては、室外側熱交換器（１）
に温度検知用の゛す−モを数句Ｏ２室外側熱交換器の霜
がとけ、ある温度以上になった時に霜取を終了させる（
サーモ終了方式）、タイマー（２）である時間霜取運転
したら強制的に終了させる（タイマー終了方式）などが
ある。In addition, as a method to finish defrosting, use the outdoor heat exchanger (1)
In addition, a temperature detection module is installed to terminate defrosting when the frost on the O2 outdoor heat exchanger melts and the temperature reaches a certain level (
The defrost operation is forcibly ended after a certain amount of time using a timer (2) (timer end method).
以上め方式によれは１例えば、サーモ開始又はサーモ終
了方式の場合、サーモを取付ける位置を決めるのがむづ
かしく９例えば、数句位置によっては絹が付いているの
に入らない、あるいはｒｔｌが残っているのに終了して
しまうといった欠点がある。また、タイマー開始又ｔま
タイマー終了にした場合９時間を決めるのがむづかしく
９例えば２時間の決め方によっては、鰯が伺いていない
のに霜取に入る。あるいし旧が伺いているのに箱取が終
了してしまうといった欠点がある。Depending on the above method, 1 For example, in the case of thermo start or thermo end method, it is difficult to decide the position to install the thermo. It has the disadvantage that it ends even though it remains. Also, if you start the timer or end the timer, it may be difficult to decide on the 9 hours.For example, depending on how you decide on the 2 hours, you may start defrosting even when the sardines have not arrived. Or, there is a drawback that Hakotori ends even though the former is visiting.
また７以上のような方法によると、室外側で霜付の要否
を判断し、必要ならばその信号を室内側に伝達するだめ
の信号線が必要となってくる。Further, according to the method described above, a signal line is required to determine whether or not frosting is necessary on the outdoor side, and to transmit the signal to the indoor side if necessary.
本発明は１以上のような欠点に鑑みなされたものであシ
、特に霜取終了に関するもので室内側のパイプ温度を検
知することによって、室外側熱交換器の霜付状態を検知
し、Ｎ取運転を終了させることによシ、よシ効率的（必
要な時に、必要な時間だけ霜取をする）な霜取をさせよ
うとするものである。The present invention has been made in view of one or more of the drawbacks, and is particularly related to the end of defrosting.The present invention detects the frosted state of the outdoor heat exchanger by detecting the temperature of the pipes on the indoor side. By terminating the defrosting operation, defrosting is performed more efficiently (defrosting is performed only when required and for the required amount of time).
以下２本発明の一実施例を図面に基づいて詳述する、第
１図は、串外側熱交換器の着側状態と室内側のパイプ温
度の変化を示す図である。An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing the state of the skewer outside heat exchanger and the change in pipe temperature on the indoor side.
図中、実線は室内側のパイプ温度を示し、破線は霜付状
態を示す、運転を開始してからある時間たつと、室外側
熱交換器に霜が付き始め、更に運転していると、目づま
シ状態になシ、加速度的に鞘付量が増加してくる。これ
に対応して、室内側のパイプ温度も着霜量に反比例して
温度が低下する。そこで、Ａ点で霜取運転に入ると、室
外側熱交換器の霜はとれ、室内側パイプ温度は、冷媒ザ
イクルは暖房回路から冷房回路に切換れることがら急激
に下がるが、鞘がとけるとパイプ温度も徐々に上昇する
。特に箱が付いている間はパイプ温度は低下ないしは横
ばいであり、霜がなくなると上昇傾向になる。このよう
に室内側パイプ温度の温度変化すなわち低下の傾向から
」二昇傾向に変わる時点（Ｂ点）で霜取を終了させれは
必要な時間だけ霜取をすることができる。In the figure, the solid line indicates the pipe temperature on the indoor side, and the broken line indicates the frosted state. After a certain period of time after the start of operation, frost begins to form on the outdoor heat exchanger, and as the operation continues, In a state of blindness, the amount of sheathing increases at an accelerating rate. Correspondingly, the indoor pipe temperature also decreases in inverse proportion to the amount of frost. Therefore, when defrosting operation is started at point A, the frost on the outdoor heat exchanger is removed and the indoor pipe temperature drops rapidly as the refrigerant cycle is switched from the heating circuit to the cooling circuit, but once the sheath melts, The pipe temperature also gradually increases. In particular, the pipe temperature decreases or remains the same while the box is attached, and tends to rise once the frost disappears. In this way, if the defrosting is terminated at the point when the indoor pipe temperature changes from a downward trend to a rising trend (point B), defrosting can be performed for the necessary time.
温度検知の方法としては、室内側のパイプにサーミスタ
ーなどの温度検出素子を取り付は霜取運転開始後２例え
ばマイコンなどによシ３０秒間秒間式イプ温度を検知し
、３０秒前に検知した温度と比較することによってパイ
プ温度が低下の傾向になつ〆ヒかを判断し、上昇の傾向
になったら終了の信号を出す。As a method of temperature detection, install a temperature detection element such as a thermistor on the pipe on the indoor side, and use a microcomputer to detect the temperature for 30 seconds after the start of defrosting operation, and then detect it 30 seconds before. By comparing the pipe temperature with the measured temperature, it is determined whether the pipe temperature is on a downward trend, and when the pipe temperature is on a rising trend, a termination signal is issued.
以上の様に本発明では２室外１μ；Ｉ熱交換器に鞘が付
いて霜取運転に入った場合、室内側のパイプ温度を検知
し、パイプ温度が低下する傾向から霜がとれてパイプが
過熱されてパイプ温度が上列する傾向になったときに霜
取を終了させるようにしだので２例えば霜がとれている
のに霜取をしたシ。As described above, in the present invention, when the 2 outdoor 1 μ; Defrosting is set to end when the pipe temperature tends to rise due to overheating, so 2. For example, if defrosting is performed even though the pipe has already defrosted.
霜が４＝Ｊいているのに霜取が終了するといったことは
なくなシ、必要最小限の時間だけ霜取運転を行なうこと
ができ１節電になるばかシでなく、霜取運転中の室温の
低下を最小限におさえることができ、快適性の向上にも
つながる。Defrosting does not end even though the frost is 4 This can minimize the decrease in the temperature and lead to improved comfort.
また、霜取の制御を室内側の信号のみで行なうようにし
たので、従来のように内外の信号線が不要になるばか勺
でなく、サーモスタットやタイマーも必要としないので
安価なものになる。In addition, since the defrost is controlled only by indoor signals, it is not as simple as the conventional method, which requires no internal and external signal lines, and it also does not require a thermostat or timer, making it inexpensive.
図は本発明の一実施例を示す室内側パイプ温度と、室外
側熱交換器の着霜量の変化を示す特性図である。
図中、実線は宰内側パイプ温度、破線は室外側熱交換器
の着霜量を示し、０点は霜取運転開始。
０点は霜取運転終了を示すものである。
代理人 葛野信−The figure is a characteristic diagram showing changes in the indoor pipe temperature and the amount of frost on the outdoor heat exchanger according to an embodiment of the present invention. In the figure, the solid line indicates the inner pipe temperature, the broken line indicates the amount of frost on the outdoor heat exchanger, and the 0 point indicates the start of defrosting operation. A zero point indicates the end of the defrosting operation. Agent Makoto Kuzuno
Claims (1)
冷媒配管にて順次連通してなる冷房・暖房兼用の空気調
和装置において、暖房運転で牝が伺いて霜取運転に入っ
た時に、室外側熱交換器の箱のとれ具合を室内側のパイ
プ温度を検知して。 パイプの温度変化が減少傾向から上昇傾向に変わる時点
で霜取運転終了の信号を出すようにしたことを特徴とす
る空気調和装置。[Claims] In an air conditioner for both cooling and heating, in which a compressor, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger are sequentially connected through refrigerant piping, a female is heard during heating operation. When the system starts defrosting operation, the indoor pipe temperature is detected to determine whether the outdoor heat exchanger box is loose. An air conditioner characterized in that a signal to end a defrosting operation is issued when the temperature change of a pipe changes from a decreasing trend to an increasing trend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57202643A JPS5993138A (en) | 1982-11-18 | 1982-11-18 | Air conditioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57202643A JPS5993138A (en) | 1982-11-18 | 1982-11-18 | Air conditioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5993138A true JPS5993138A (en) | 1984-05-29 |
Family
ID=16460734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57202643A Pending JPS5993138A (en) | 1982-11-18 | 1982-11-18 | Air conditioning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5993138A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790144A (en) * | 1985-11-18 | 1988-12-13 | Matsushita Electric Industrial Co., Ltd. | Defrosting control apparatus for a temperature control system |
| US5156010A (en) * | 1990-06-18 | 1992-10-20 | Sanyo Electric Co., Ltd. | Defrost control method for a heat pump |
| WO1998036228A1 (en) * | 1997-02-14 | 1998-08-20 | Carrier Corporation | Defrost control for heat pump |
-
1982
- 1982-11-18 JP JP57202643A patent/JPS5993138A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790144A (en) * | 1985-11-18 | 1988-12-13 | Matsushita Electric Industrial Co., Ltd. | Defrosting control apparatus for a temperature control system |
| US5156010A (en) * | 1990-06-18 | 1992-10-20 | Sanyo Electric Co., Ltd. | Defrost control method for a heat pump |
| WO1998036228A1 (en) * | 1997-02-14 | 1998-08-20 | Carrier Corporation | Defrost control for heat pump |
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