JPH0240460Y2 - - Google Patents
Info
- Publication number
- JPH0240460Y2 JPH0240460Y2 JP1983079138U JP7913883U JPH0240460Y2 JP H0240460 Y2 JPH0240460 Y2 JP H0240460Y2 JP 1983079138 U JP1983079138 U JP 1983079138U JP 7913883 U JP7913883 U JP 7913883U JP H0240460 Y2 JPH0240460 Y2 JP H0240460Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heat exchanger
- side heat
- source side
- heat source
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 16
- 238000010257 thawing Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims description 9
- 230000035945 sensitivity Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【考案の詳細な説明】
本考案は、ヒートポンプ式冷暖房装置に関し、
更に詳しくはヒートポンプ式冷暖房装置における
デフロスト検知用感温筒の取付構造に関するもの
である。[Detailed description of the invention] The present invention relates to a heat pump type air conditioning system.
More specifically, the present invention relates to a mounting structure for a temperature-sensitive cylinder for defrost detection in a heat pump air-conditioning system.
従来のヒートポンプ式冷暖房装置においては、
第３図図示の如く、熱源側熱交換器ａの複数個の
Ｕベンドｂ，ｂ……にデフロスト検知用の感温筒
ｃを架設して、感温筒ｃの接触面積を大ならしめ
るようにしたものは既に知られている（例えば実
開昭54−140344号公報参照）。つまり、感温筒ｃ
の感温面積を増大させて、感温筒ｃの感度をあげ
ることをねらいとしているのである。ところが、
暖房運転時における熱源側熱交換器ａの着霜状態
は外気条件によつてこもごもであり、又除霜運転
時における霜のとけぐあいもこもごもであるた
め、感温筒ｃの感度が良いと、霜のとけ具合とは
あまり関係なく、ある程度除霜されると、除霜終
了信号が発せられ、暖房運転に復帰してしまうと
いう不都合が生じていた。 In conventional heat pump type air conditioning equipment,
As shown in Fig. 3, temperature-sensitive tubes c for defrost detection are installed in multiple U-bends b, b... of the heat exchanger a on the heat source side, and the contact area of the temperature-sensing tubes c is increased. It is already known (for example, see Japanese Utility Model Application Publication No. 140344/1983). In other words, the thermosensor c
The aim is to increase the temperature-sensing area of the temperature-sensing tube c and increase the sensitivity of the temperature-sensing tube c. However,
The frosting state of the heat source side heat exchanger a during heating operation varies depending on the outside air conditions, and the frost melting during defrosting operation varies, so if the sensitivity of temperature sensing tube c is good, Regardless of the degree of melting of the frost, once the defrost has been defrosted to a certain extent, a defrost end signal is issued and heating operation is resumed, which is an inconvenience.
そこで、本考案者らは、除霜を必要とする着霜
状態に至る変化はゆるやかであり、感温筒の感度
はそれほど良くなくともいいこと、更に、除霜時
には、若干除霜運転時間が長くなつても除霜が完
全になるだけなので問題がないことに着目して、
本考案に至つたのである。 Therefore, the inventors of the present invention discovered that the change in frost formation that requires defrosting is gradual, and that the sensitivity of the thermosensor tube does not need to be very high. Focusing on the fact that there is no problem even if the defrost is completed for a long time,
This led to the idea of this invention.
本考案は、デフロスト検知用の感温筒の感度を
若干にぶくすることによつて、暖房運転時におけ
る除霜を完全に行ない得るようにすることを目的
とするものである。 The purpose of the present invention is to make it possible to completely defrost during heating operation by slightly increasing the sensitivity of the temperature sensing cylinder for defrost detection.
かかる目的達成のため、本考案は、ヒートポン
プ式冷暖房装置における熱源側熱交換器の暖房運
転時に出口となる冷媒配管にＵ字管部を形成し且
つ該Ｕ字管部に除霜運転の開始及び終了温度を検
知する感温筒を２点接触にて架設して、該感温筒
の感度が若干にぶくなるようにしたことを特徴と
している。 To achieve this objective, the present invention forms a U-shaped pipe section in the refrigerant pipe that serves as an outlet during heating operation of the heat source-side heat exchanger in a heat pump type air-conditioning system, and also forms a U-shaped pipe section in the U-shaped pipe section for starting and defrosting operation. It is characterized in that a thermosensor tube for detecting the end temperature is installed with two points of contact, so that the sensitivity of the thermosensor tube is slightly reduced.
以下第１図ないし第３図を参照して、本考案の
実施例にかかるヒートポンプ式冷暖房装置を説明
する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat pump type air-conditioning device according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
本実施例のヒートポンプ式冷暖房装置は、圧縮
機１、四路切換弁２、熱源側熱交換器３、逆止弁
５を併設した暖房用膨張機構４、逆止弁７を併設
した冷房用膨張機構６、利用側熱交換器８及びア
キユムレータ９を順次接続して、四路切換弁２の
切換え操作によつて冷媒を可逆的に循環させる
（暖房時実線矢印、冷房時点線矢印）ように構成
されている。 The heat pump air conditioning system of this embodiment includes a compressor 1, a four-way switching valve 2, a heat source side heat exchanger 3, a heating expansion mechanism 4 equipped with a check valve 5, and a cooling expansion mechanism 4 equipped with a check valve 7. The mechanism 6, the user-side heat exchanger 8, and the accumulator 9 are connected in sequence, and the refrigerant is reversibly circulated by switching the four-way switching valve 2 (solid arrow during heating, solid arrow during cooling). has been done.
前記熱源側熱交換器３の暖房運転時に出口とな
る冷媒配管１０には、Ｕ字管部１１が形成されて
おり、該Ｕ字管部１１には、除霜運転の開始及び
終了温度を検知する感温筒１２が２点接触にて架
設されている。このようにすることによつて、感
温筒１２と冷媒配管１０との接触面積をＵ字管部
１１の２ケ所に限定し、以つて感温筒１２の感度
が若干にぶくなるようにしている。 A U-shaped tube portion 11 is formed in the refrigerant pipe 10 that serves as an outlet during heating operation of the heat source side heat exchanger 3, and the U-shaped tube portion 11 is configured to detect the start and end temperatures of the defrosting operation. A temperature sensing cylinder 12 is installed with two points of contact. By doing this, the contact area between the thermosensor tube 12 and the refrigerant pipe 10 is limited to two locations on the U-shaped tube portion 11, and the sensitivity of the thermosensor tube 12 is slightly reduced. .
次に第４図を参照して、本考案実施例と従来例
とを比較しつつつ説明する。 Next, referring to FIG. 4, the embodiment of the present invention and the conventional example will be explained while comparing them.
第４図には、時間ｔに対する冷媒配管温度（曲
線Ａ）、従来例の感温筒温度（曲線Ｂ）及び本実
施例の感温筒温度（曲線Ｃ）の変化が示されてい
る。 FIG. 4 shows changes in the refrigerant pipe temperature (curve A), the temperature sensing cylinder temperature of the conventional example (curve B), and the temperature sensing cylinder temperature of the present example (curve C) with respect to time t.
これによれば、従来例の場合、冷媒配管温度曲
線Ａと感温筒温度曲線Ｂとは近似的に変化し、除
霜運転終了温度（６℃）に感温筒温度が達した時
の冷媒配管温度の差温T1が小さい。従つて、実
際に凍結した氷が解ける間もなく、除霜運転が終
了して、暖房運転に復帰することとなり、霜のと
け残りが発生する。 According to this, in the case of the conventional example, the refrigerant piping temperature curve A and the thermosensor cylinder temperature curve B change approximately, and the refrigerant pipe temperature curve when the thermosensor cylinder temperature reaches the defrosting operation end temperature (6°C) The temperature difference T 1 in the pipe temperature is small. Therefore, before the frozen ice actually melts, the defrosting operation ends and the heating operation returns, resulting in residual frost remaining.
これに対して、本実施例の場合、冷媒配管温度
曲線Ａと感温筒温度曲線Ｃとの間に比較的大きな
差異があり、感温筒温度は、除霜運転開始温度
（−３℃）及び除霜運転終了温度（６℃）に従来
例に比べて時間t1及びt2だけ遅れて達するが、着
霜時の温度変化に比べて、除霜時の温度変化の方
が大きいが故に、冷媒配管温度の差温T2が大き
くなり、凝縮温度を除霜が完了するまで上げるこ
ととなるのである。尚、除霜運転時間も若干長く
なる。 On the other hand, in the case of this example, there is a relatively large difference between the refrigerant piping temperature curve A and the temperature sensing cylinder temperature curve C, and the temperature sensing cylinder temperature is the defrosting operation start temperature (-3°C). The defrosting operation end temperature (6℃) is reached later by time t 1 and t 2 than in the conventional example, but this is because the temperature change during defrosting is larger than the temperature change during frost formation. , the temperature difference T 2 between the refrigerant pipe temperatures becomes large, and the condensing temperature is raised until defrosting is completed. Note that the defrosting operation time also becomes slightly longer.
続いて、本考案のヒートポンプ式冷暖房装置の
効果を述べる。 Next, the effects of the heat pump air conditioning system of the present invention will be described.
本考案によれば、熱源側熱交換器３の暖房運転
時に出口となる冷媒配管１０に形成したＵ字管部
１１に、除霜運転の開始及び終了温度を検知する
感温筒１２を２点接触にて架設して、冷媒配管１
０と感温筒１２との接触面積を従来例より小さく
しているので、感温筒１２の感度が若干にぶくな
つて、除霜終了温度の検知をおくらすことがで
き、除霜を完全に行なうことができるという実用
的な効果がある。 According to the present invention, the U-shaped pipe portion 11 formed in the refrigerant pipe 10 that serves as the outlet during the heating operation of the heat source side heat exchanger 3 is provided with two temperature-sensitive tubes 12 for detecting the start and end temperatures of the defrosting operation. Install the refrigerant pipe 1 by contacting it.
Since the contact area between the thermosensor 12 and the thermosensor 12 is smaller than that of the conventional example, the sensitivity of the thermosensor 12 is slightly reduced, making it possible to delay the detection of the defrosting end temperature and completely defrosting. There is a practical effect that it can be done.
又、Ｕ字管部１１に感温筒１２を２点接触にて
架設するようにしたので、感温筒１２の取付けが
容易となるという利点もある。 Further, since the temperature sensing tube 12 is installed on the U-shaped tube portion 11 with two points of contact, there is an advantage that the temperature sensing tube 12 can be easily attached.
第１図は本考案の実施例にかかるヒートポンプ
式冷暖房装置の冷媒回路図、第２図は第１図のヒ
ートポンプ式冷暖房装置における熱源側熱交換器
の正面図、第３図は従来例における熱源側熱交換
器の側面図、第４図は時間ｔに対する冷媒配管温
度、従来例の感温筒温度及び本考案実施例の感温
筒温度の変化を示す特性図である。
１……圧縮機、２……四路切換弁、３……熱源
側熱交換器、８……利用側熱交換器、１０……冷
媒配管、１１……Ｕ字管部、１２……感温筒。
Fig. 1 is a refrigerant circuit diagram of a heat pump type air conditioner according to an embodiment of the present invention, Fig. 2 is a front view of the heat source side heat exchanger in the heat pump type air conditioner of Fig. 1, and Fig. 3 is a heat source in a conventional example. FIG. 4, which is a side view of the side heat exchanger, is a characteristic diagram showing changes in the temperature of the refrigerant pipe, the temperature of the temperature sensing cylinder of the conventional example, and the temperature of the temperature sensing cylinder of the embodiment of the present invention with respect to time t. 1... Compressor, 2... Four-way switching valve, 3... Heat source side heat exchanger, 8... User side heat exchanger, 10... Refrigerant piping, 11... U-shaped pipe section, 12...... Warm tube.
Claims (1)
び利用側熱交換器８を備え、四路切換弁２の切り
換え操作によつて冷媒を可逆的に循環させ得るよ
うにしたヒートポンプ式冷暖房装置において、前
記熱源側熱交換器３の暖房運転時に出口となる冷
媒配管１０には、Ｕ字管部１１が形成され、且つ
該Ｕ字管部１１には、除霜運転の開始及び終了温
度を検知する感温筒１２が２点接触にて架設され
ていることを特徴とするヒートポンプ式冷暖房装
置。 A heat pump type that is equipped with a compressor 1, a four-way switching valve 2, a heat source side heat exchanger 3, and a usage side heat exchanger 8, and is capable of reversibly circulating refrigerant by switching the four-way switching valve 2. In the air conditioning system, a U-shaped tube section 11 is formed in the refrigerant pipe 10 that serves as an outlet during the heating operation of the heat source side heat exchanger 3, and the U-shaped tube section 11 has a section for starting and ending the defrosting operation. A heat pump type air-conditioning device characterized in that a temperature-sensing tube 12 for detecting temperature is installed with two-point contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7913883U JPS59184065U (en) | 1983-05-25 | 1983-05-25 | Heat pump air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7913883U JPS59184065U (en) | 1983-05-25 | 1983-05-25 | Heat pump air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59184065U JPS59184065U (en) | 1984-12-07 |
| JPH0240460Y2 true JPH0240460Y2 (en) | 1990-10-29 |
Family
ID=30209139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7913883U Granted JPS59184065U (en) | 1983-05-25 | 1983-05-25 | Heat pump air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59184065U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012120554A1 (en) * | 2011-03-04 | 2012-09-13 | パナソニック株式会社 | Refrigeration cycle apparatus |
| JP2012184870A (en) * | 2011-03-04 | 2012-09-27 | Panasonic Corp | Refrigerating cycle device |
| JP2014159953A (en) * | 2014-04-28 | 2014-09-04 | Panasonic Corp | Refrigeration cycle device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6064287B2 (en) * | 2015-07-24 | 2017-01-25 | パナソニックＩｐマネジメント株式会社 | Refrigeration cycle equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5470155U (en) * | 1977-10-27 | 1979-05-18 | ||
| JPS5654757U (en) * | 1979-10-04 | 1981-05-13 |
-
1983
- 1983-05-25 JP JP7913883U patent/JPS59184065U/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012120554A1 (en) * | 2011-03-04 | 2012-09-13 | パナソニック株式会社 | Refrigeration cycle apparatus |
| JP2012184870A (en) * | 2011-03-04 | 2012-09-27 | Panasonic Corp | Refrigerating cycle device |
| CN103348201A (en) * | 2011-03-04 | 2013-10-09 | 松下电器产业株式会社 | Refrigeration cycle apparatus |
| CN105180523A (en) * | 2011-03-04 | 2015-12-23 | 松下知识产权经营株式会社 | Refrigeration circulation device |
| JP2014159953A (en) * | 2014-04-28 | 2014-09-04 | Panasonic Corp | Refrigeration cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59184065U (en) | 1984-12-07 |
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