JPS61237980A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS61237980A JPS61237980A JP7833585A JP7833585A JPS61237980A JP S61237980 A JPS61237980 A JP S61237980A JP 7833585 A JP7833585 A JP 7833585A JP 7833585 A JP7833585 A JP 7833585A JP S61237980 A JPS61237980 A JP S61237980A
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- refrigerant
- shape memory
- temperature
- memory alloy
- 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 Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、空気調和機における冷凍サイクルの冷媒流量
の制御装置に係るもので、特に周囲の温度・湿度条件か
変化しても適正なる冷媒流量を与えうるちのである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a control device for a refrigerant flow rate in a refrigeration cycle in an air conditioner, and particularly to a control device for controlling a refrigerant flow rate in a refrigeration cycle in an air conditioner, and in particular, to maintain an appropriate refrigerant flow rate even when ambient temperature and humidity conditions change. It is Uruchino that gives.
従来の第２図に示すキャピラリチューブによる冷媒制御
装置は、流量抵抗が一定のため、室内側あるいは室外側
の温湿度条件が変化しても冷媒流量は、はとんど変化し
ないという問題点が有った。The conventional refrigerant control device using a capillary tube shown in Fig. 2 has a constant flow resistance, so the problem is that the refrigerant flow rate hardly changes even if the temperature and humidity conditions on the indoor side or the outdoor side change. There was.
なあ、冷媒制御装置として形状記憶合金を用いたものに
は、例えば特開昭５９−１３１８６６号等）挙げられる
。Examples of refrigerant control devices using shape memory alloys include, for example, JP-A-59-131866.
本発明の目的は、室内側・室外側の温湿度条件か変化し
ても常に室内側熱交換器（蒸発器）の過熱度を一定に保
持できるようにキャピラリチューブの端部に内径が可変
の形状記憶合金製細管を設け、熱負荷に対応して常に蒸
発器全体が有効に利用できる空気調和機を提供すること
にある。The purpose of the present invention is to provide a capillary tube with a variable inner diameter at the end so that the degree of superheating of the indoor heat exchanger (evaporator) can be maintained constant even if the temperature and humidity conditions on the indoor and outdoor sides change. An object of the present invention is to provide an air conditioner that is provided with a thin tube made of a shape memory alloy and that can effectively utilize the entire evaporator at all times in response to heat loads.
本発明は、上記目的を達成するためにキャピラリチュー
ブの端部に形状記憶合金製細管を接続しこの細管内を流
れる冷媒の温度により内径か変化する。また、この形状
記憶合金製細管を蒸発器の出口側パイプに密接すること
により出口側の冷媒温度も感知して細管の内径が変化す
る。すなわち蒸発器の入口側と出口側の両方の温度を感
知し細管の内径が変化することにより、適正な過熱度を
保持するものである。In order to achieve the above object, the present invention connects a capillary tube made of a shape memory alloy to the end of a capillary tube, and changes the inner diameter depending on the temperature of a refrigerant flowing inside the capillary tube. Furthermore, by bringing this shape memory alloy thin tube into close contact with the outlet side pipe of the evaporator, the temperature of the refrigerant on the outlet side is also sensed and the inner diameter of the thin tube changes. That is, by sensing the temperature on both the inlet and outlet sides of the evaporator and changing the inner diameter of the thin tube, an appropriate degree of superheat is maintained.
以下、本発明の一実施例を第２図により説明す］。冷凍
サイクルとして、圧縮機１を出て凝縮器２を通り、冷媒
流量を制御するキャピラリチューブ５とこの端部に接続
した形状記憶合金製細管６を通り、蒸発器５を経て圧縮
機１に連通ずるものである。形状記憶合金製細管６は蒸
発器の出口側パイプ７に密接している。この形状記憶合
金製細管６は、変態温度の高温側と低温側とで管の内径
が、高温時は大きく低温時は小さくなるように形状を記
憶させた形状記憶合金を用いている。An embodiment of the present invention will be described below with reference to FIG. As a refrigeration cycle, the refrigerant leaves the compressor 1, passes through the condenser 2, passes through a capillary tube 5 that controls the flow rate of the refrigerant, and a capillary tube 6 made of shape memory alloy connected to the end of this tube, passes through the evaporator 5, and is connected to the compressor 1. It is something that can be understood. The shape memory alloy thin tube 6 is in close contact with the outlet pipe 7 of the evaporator. This shape memory alloy thin tube 6 uses a shape memory alloy whose shape is memorized so that the inner diameter of the tube is large at high temperatures and small at low temperatures on the high and low transformation temperature sides.
かかる構成において、運転を行うと凝縮器２にて放熱し
た冷媒は、キャピラリチューブ５を通過することにより
低温低圧の液状態に変化する。この後、蒸発器３により
室内側空気と熱交換するか、熱負荷の量１こより蒸発器
の出口側の冷媒温度は変化する。例えば、室内の熱負荷
が大きい時は蒸発器の出口側における冷媒温度は上昇し
スーパーヒート状態となり、蒸発器３の全体を有効的に
利用できないことになる。本装置では、蒸発器の人口側
の冷媒温度に近い温度にある冷媒か形状記憶合金製細管
６の内部ター通過するとともに、形状記憶府会製細管６
か蒸発器の出口側パイプ７に密接しているので形状記憶
合金製細管６の外部表面は蒸発器の出口側の冷媒温度を
感知する。上記のように室内の熱負荷か大きい場合は、
蒸発器の出口側における冷媒温度が高すぎることを感知
して形状記憶合金製細管６の内径か太き（冷媒流量か多
（なるように調節する。また、逆に熱負荷が小さい場合
は蒸発器の出口側冷媒温度は、人口側冷媒温度より下が
ってくる。蒸発器の出口側冷媒温度が下かりすぎると、
この温度を感知する形状記憶合金製細管６の内径は小さ
くなり冷媒流量が少なくなるように調整する。このよう
にして、蒸発器の人口側と出口側の冷媒温度差と形状記
憶合金製細管６の内径の変化率を適正に設定すれば、熱
負荷が変化しても冷媒流量を調節して設定した過熱度を
保、持することがでさ、蒸発器を有効的に利用でさるも
のである。In this configuration, when the refrigerant is operated, the refrigerant that has radiated heat in the condenser 2 passes through the capillary tube 5 and changes to a low temperature, low pressure liquid state. Thereafter, the temperature of the refrigerant on the outlet side of the evaporator changes due to heat exchange with indoor air in the evaporator 3 or due to the amount of heat load. For example, when the indoor heat load is large, the refrigerant temperature at the outlet side of the evaporator rises, resulting in a superheat state, and the entire evaporator 3 cannot be used effectively. In this device, the refrigerant at a temperature close to the refrigerant temperature on the artificial side of the evaporator passes through the shape memory alloy thin tube 6, and the shape memory alloy thin tube 6
Since it is in close contact with the outlet pipe 7 of the evaporator, the outer surface of the shape memory alloy capillary tube 6 senses the refrigerant temperature on the outlet side of the evaporator. If the indoor heat load is large as shown above,
It detects that the refrigerant temperature on the exit side of the evaporator is too high and adjusts the inner diameter of the shape memory alloy thin tube 6 to be thicker (the refrigerant flow rate is larger).On the other hand, if the heat load is small, the evaporation The refrigerant temperature on the outlet side of the evaporator will drop below the refrigerant temperature on the artificial side.If the refrigerant temperature on the outlet side of the evaporator drops too much,
The inner diameter of the shape memory alloy thin tube 6 that senses this temperature is adjusted so that the flow rate of the refrigerant is reduced. In this way, if the refrigerant temperature difference between the intake side and the outlet side of the evaporator and the rate of change in the inner diameter of the shape memory alloy thin tube 6 are set appropriately, the refrigerant flow rate can be adjusted and set even if the heat load changes. The evaporator can be used effectively by maintaining the superheat level.
本発明によれば、蒸発器の過熱度を熱負荷の変化に対応
して常に一定に設定することかでき、蒸溌器全体を有効
に利用することにより良好で快適な冷房性能が得られる
効果がある。According to the present invention, the degree of superheating of the evaporator can be always set constant in response to changes in heat load, and the effect is that good and comfortable cooling performance can be obtained by effectively utilizing the entire evaporator. There is.
第１図は、本発明の一実施例に詔ける空気調和機の冷凍
サイクル図、第２図は、従来の空気調和機の冷凍サイク
ル図である。
１・・・圧縮機、２・・・凝縮器、３・・・蒸発器、４
．５・・・キャピラリチューブ、６・・・形状記憶合金
製細管、７・・・蒸発器の出口側パイプ。
第 ｊ 図
第′ｌ にFIG. 1 is a refrigeration cycle diagram of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a refrigeration cycle diagram of a conventional air conditioner. 1... Compressor, 2... Condenser, 3... Evaporator, 4
．． 5... Capillary tube, 6... Shape memory alloy thin tube, 7... Evaporator outlet side pipe. In figure j, line 'l'
Claims (1)
化する形状記憶合金製の細管を備え、この細管が蒸発器
の出口側パイプに熱的に接してなることを特徴とする空
気調和機。1. An air conditioner characterized in that a thin tube made of a shape memory alloy whose inner diameter changes according to temperature changes is provided between the evaporator and the condenser, and this thin tube is in thermal contact with the outlet pipe of the evaporator. Machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7833585A JPS61237980A (en) | 1985-04-15 | 1985-04-15 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7833585A JPS61237980A (en) | 1985-04-15 | 1985-04-15 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61237980A true JPS61237980A (en) | 1986-10-23 |
Family
ID=13659101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7833585A Pending JPS61237980A (en) | 1985-04-15 | 1985-04-15 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61237980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3511656A1 (en) * | 2018-01-11 | 2019-07-17 | Robert Bosch GmbH | Cooling machine with adaptive nozzle |
-
1985
- 1985-04-15 JP JP7833585A patent/JPS61237980A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3511656A1 (en) * | 2018-01-11 | 2019-07-17 | Robert Bosch GmbH | Cooling machine with adaptive nozzle |
| CN110030775A (en) * | 2018-01-11 | 2019-07-19 | 罗伯特·博世有限公司 | Refrigeration machine with adaptive throttle valve |
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