JPH0968370A - Capacity testing device for heat exchanger - Google Patents
Capacity testing device for heat exchangerInfo
- Publication number
- JPH0968370A JPH0968370A JP22206395A JP22206395A JPH0968370A JP H0968370 A JPH0968370 A JP H0968370A JP 22206395 A JP22206395 A JP 22206395A JP 22206395 A JP22206395 A JP 22206395A JP H0968370 A JPH0968370 A JP H0968370A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- capacity
- refrigerant
- test device
- connection
- 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
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- Measuring Temperature Or Quantity Of Heat (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特に冷媒回路に用
いられる熱交換器の能力試験装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacity test device for a heat exchanger used especially in a refrigerant circuit.
【０００２】[0002]
【従来の技術】従来この種冷媒回路においては、例えば
特開平５−１４２２９４号公報（Ｇ０１Ｒ３１／２６）
に示される如く、圧縮機から吐出された高温高圧冷媒を
凝縮する凝縮器として、或いは、減圧冷媒を蒸発させる
蒸発器として、空気流通式の熱交換器が用いられてい
る。2. Description of the Related Art Conventionally, in this type of refrigerant circuit, for example, JP-A-5-142294 (G01R31 / 26).
As shown in (1), an air circulation type heat exchanger is used as a condenser for condensing the high temperature and high pressure refrigerant discharged from the compressor or as an evaporator for evaporating the decompressed refrigerant.
【０００３】係る熱交換器の能力評価を行う場合、従来
一般的にはブラインを用いる試験機と、冷媒を用いる試
験機が用いられていた。前者のブラインを用いる試験機
の場合には、一定温度（例えば＋４０℃）の水を熱交換
器内に流し、カロリーメーターにより熱交換器に通風し
てこの熱交換器の入口水温と出口水温の差を把握し、通
過風量と熱交換器前後の空気温度を総合的に評価して能
力を求めるものである。[0003] When evaluating the capability of such a heat exchanger, conventionally, a tester using brine and a tester using a refrigerant have been generally used. In the case of the former tester using brine, water with a constant temperature (for example, + 40 ° C) is made to flow through the heat exchanger, and the heat exchanger is ventilated by a calorimeter to control the inlet water temperature and the outlet water temperature of this heat exchanger. The capacity is obtained by grasping the difference and comprehensively evaluating the passing air volume and the air temperature before and after the heat exchanger.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、冷媒と
ブラインの熱伝達率は異なり、また、同じ冷媒でもガス
と液では熱伝達率が異なってくる。そのため、熱交換器
の配管壁を含めた全体の熱通過率がブラインと実際に用
いられる冷媒とで異なってくるため、正確な能力評価が
できなくなる問題があった。一方、後者の冷媒を用いる
試験機の場合には、従来では極めて高価で操作も複雑と
なり、一般的には実用的でない問題があった。However, the heat transfer coefficients of the refrigerant and the brine are different, and even for the same refrigerant, the heat transfer coefficients of the gas and the liquid are different. Therefore, the heat transfer coefficient of the whole including the piping wall of the heat exchanger is different between the brine and the refrigerant actually used, which causes a problem that an accurate capacity evaluation cannot be performed. On the other hand, in the case of the latter tester using a refrigerant, conventionally, there is a problem that it is not practical because it is extremely expensive and the operation is complicated.
【０００５】本発明は、係る従来の技術的課題を解決す
るために成されたものであり、熱交換器の能力評価を正
確、且つ、安価に実現することができる能力試験装置を
提供することを目的とする。The present invention has been made in order to solve the above-mentioned conventional technical problems, and provides a capacity test device capable of accurately and inexpensively evaluating the capacity of a heat exchanger. With the goal.
【０００６】[0006]
【課題を解決するための手段】本発明の熱交換器の能力
試験装置は、カロリーメーターを用いて試験体熱交換器
の熱交換能力を測定可能とされたものであって、冷媒圧
縮機、副熱交換器、第一の接続部、第二の接続部、冷媒
流量計、手動膨張弁、熱交換器、気液分離器を、両接続
部間を除き順次配管接続し、両接続部間に試験体熱交換
器を接続すると共に、各接続部にはそれぞれ温度センサ
を設けたものである。The heat exchanger capacity test apparatus of the present invention is capable of measuring the heat exchange capacity of a test body heat exchanger by using a calorimeter and comprises a refrigerant compressor, The sub heat exchanger, the first connection part, the second connection part, the refrigerant flow meter, the manual expansion valve, the heat exchanger, and the gas-liquid separator are sequentially pipe-connected except between both connection parts, and between both connection parts. A test-body heat exchanger is connected to and a temperature sensor is provided at each connection.
【０００７】請求項２の発明の熱交換器の能力試験装置
は、上記において手動膨張弁の入口側と出口側をバイパ
スする配管を設け、この配管には受液器を介設し、この
受液器の出入口には閉止弁を取り付けたものである。請
求項３の発明の熱交換器の能力試験装置は、上記におい
て受液器の出口側にキャピラリーチューブを設けたもの
である。In the heat exchanger capacity test apparatus of the second aspect of the present invention, a pipe for bypassing the inlet side and the outlet side of the manual expansion valve is provided in the above, and a liquid receiver is provided in this pipe, and this receiver is provided. A shut-off valve is attached to the inlet and outlet of the liquid container. In the heat exchanger capacity test device of the invention of claim 3, a capillary tube is provided on the outlet side of the liquid receiver in the above.
【０００８】請求項４の発明の熱交換器の能力試験装置
は、請求項１において両接続部をフレア構造としたもの
である。請求項５の発明の熱交換器の能力試験装置は、
請求項１において副熱交換器に通風する送風機を設け、
冷媒圧縮機及び／又は送風機の能力を可変としたもので
ある。According to a fourth aspect of the present invention, there is provided the heat exchanger capacity test device according to the first aspect, wherein both connecting portions have a flare structure. The heat exchanger capacity test device of the invention of claim 5 is
A blower for ventilating the sub heat exchanger according to claim 1,
The capacity of the refrigerant compressor and / or the blower is variable.
【０００９】請求項６の発明の熱交換器の能力試験装置
は、請求項１において熱交換器を恒温水槽内に設置した
ものである。請求項７の発明の熱交換器の能力試験装置
は、請求項１において第二の接続部にサイトグラスを接
続したものである。請求項８の発明の熱交換器の能力試
験装置は、請求項１において各接続部にはそれぞれ圧力
センサを設けたものである。According to a sixth aspect of the present invention, there is provided the heat exchanger capacity test device, wherein the heat exchanger is installed in a constant temperature water tank. The heat exchanger capacity test device of the invention of claim 7 is the one in which a sight glass is connected to the second connection portion of claim 1. The heat exchanger capacity test device according to the invention of claim 8 is the one according to claim 1, wherein a pressure sensor is provided at each connection portion.
【００１０】請求項９の発明の熱交換器の能力試験装置
は、請求項１において各接続部に閉止弁を設け、閉止弁
と試験体熱交換器の間にはサービスバルブを設けたもの
である。請求項１０の発明の熱交換器の能力試験装置
は、上記各発明において副熱交換器の出口を熱交換器の
一端に、熱交換器の他端を冷媒流量計に、手動膨張弁を
第一の接続部に、第二の接続部を気液分離器にそれぞれ
接続変更可能としたものである。According to a ninth aspect of the present invention, there is provided a heat exchanger capacity test device in which a closing valve is provided at each connecting portion and a service valve is provided between the closing valve and the test body heat exchanger. is there. A heat exchanger capacity test device according to a tenth aspect of the present invention is the heat exchanger capacity test device according to each of the above aspects, wherein the outlet of the auxiliary heat exchanger is one end of the heat exchanger, the other end of the heat exchanger is a refrigerant flow meter, and a manual expansion valve is It is possible to change the connection between the first connecting portion and the second connecting portion to the gas-liquid separator.
【００１１】請求項１１の発明の熱交換器の能力試験装
置は、カロリーメーターを用いて試験体熱交換器の熱交
換能力を測定可能とされたものであって、冷媒圧縮機、
副熱交換器、熱交換器、冷媒流量計、手動膨張弁、第一
の接続部、第二の接続部、気液分離器を、両接続部を除
き順次配管接続し、両接続部間に試験体熱交換器を接続
すると共に、各接続部にはそれぞれ温度センサを設けた
ものである。The heat exchanger capacity test device of the invention of claim 11 is capable of measuring the heat exchange capacity of the test body heat exchanger by using a calorimeter and comprises a refrigerant compressor,
Secondary heat exchanger, heat exchanger, refrigerant flow meter, manual expansion valve, first connecting part, second connecting part, gas-liquid separator, except for both connecting parts, are connected by piping in order, and between both connecting parts. A test body heat exchanger is connected and a temperature sensor is provided at each connection.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づき詳述する。図１は本発明の能力試験装置１の冷媒
回路図を示している。能力試験装置１は周囲温度一定の
室内に設置され、図中２はインバータ（周波数変換回
路）によって回転数（能力）を制御される冷媒圧縮機で
あり、この冷媒圧縮機２の吐出側には油分離器３が配管
接続されている。この油分離器３は冷媒圧縮機２から冷
媒と共に吐出された潤滑油を分離して図中破線で示す如
く冷媒圧縮機２に戻す役割を果たす。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a refrigerant circuit diagram of a capacity test device 1 of the present invention. The capacity test device 1 is installed in a room with a constant ambient temperature, and 2 in the figure is a refrigerant compressor whose rotation speed (capacity) is controlled by an inverter (frequency conversion circuit). The oil separator 3 is connected by piping. The oil separator 3 plays a role of separating the lubricating oil discharged from the refrigerant compressor 2 together with the refrigerant and returning it to the refrigerant compressor 2 as shown by the broken line in the figure.
【００１３】この油分離器３の冷媒出口には副熱交換器
４の入口が配管接続され、副熱交換器４の出口には第一
の接続部としての第一センサブロック６が接続されてい
る。前記副熱交換器４には送風機７が設けられており、
副熱交換器４はこの送風機７にて通風される。また、こ
の送風機７はインバータによって回転数が制御される。The refrigerant outlet of the oil separator 3 is connected to the inlet of the auxiliary heat exchanger 4 by piping, and the outlet of the auxiliary heat exchanger 4 is connected to the first sensor block 6 as a first connecting portion. There is. The sub heat exchanger 4 is provided with a blower 7,
The sub heat exchanger 4 is ventilated by the blower 7. The rotation speed of the blower 7 is controlled by an inverter.
【００１４】更に、前記第一センサブロック６は温度セ
ンサと圧力センサ、及び、閉止弁とフレア接続部を一体
に備えた構造である。９は第二の接続部としての第二セ
ンサブロックであり、この第二センサブロック９にも温
度センサと圧力センサ、及び、閉止弁とフレア接続部が
一体に組み込まれている。Further, the first sensor block 6 has a structure in which a temperature sensor and a pressure sensor, and a shutoff valve and a flare connecting portion are integrally provided. Reference numeral 9 is a second sensor block as a second connecting portion, and a temperature sensor and a pressure sensor, and a shutoff valve and a flare connecting portion are also integrally incorporated in this second sensor block 9.
【００１５】この第二センサブロック９にはサイトグラ
ス（覗き窓）１１が配管接続されると共に、サイトグラ
ス１１の出口側には冷媒流量計１２が配管接続されてい
る。また、冷媒流量計１２の出口側には手動膨張弁１３
が配管接続されると共に、手動膨張弁１３の出口側には
熱交換器１６が配管接続されている。熱交換器１６は、
例えば＋２０℃の恒温に維持された水槽１８内に浸漬さ
れている。そして、係る熱交換器１６の出口側は気液分
離器１９に配管接続され、気液分離器１９は冷媒圧縮機
２の吸込側に配管接続されている。A sight glass (peep window) 11 is connected to the second sensor block 9 by piping, and a refrigerant flow meter 12 is connected on the outlet side of the sight glass 11 by piping. A manual expansion valve 13 is provided on the outlet side of the refrigerant flow meter 12.
And a heat exchanger 16 are pipe-connected to the outlet side of the manual expansion valve 13. The heat exchanger 16 is
For example, it is immersed in a water tank 18 maintained at a constant temperature of + 20 ° C. The outlet side of the heat exchanger 16 is pipe-connected to the gas-liquid separator 19, and the gas-liquid separator 19 is pipe-connected to the suction side of the refrigerant compressor 2.
【００１６】前記サイトグラス１１の出口側と熱交換器
１６の出口側には、手動膨張弁１３をバイパスするかた
ちでバイパス回路２１が接続されている。このバイパス
回路２１は、受液器２２と、その出入口に接続された閉
止弁２３、２３と、受液器２２の出口側と熱交換器１６
の出口側とを連通するキャピラリーチューブ２４とから
構成されている。A bypass circuit 21 is connected to the outlet side of the sight glass 11 and the outlet side of the heat exchanger 16 so as to bypass the manual expansion valve 13. The bypass circuit 21 includes a liquid receiver 22, shutoff valves 23, 23 connected to the inlet and outlet of the liquid receiver 22, the outlet side of the liquid receiver 22, and the heat exchanger 16.
And a capillary tube 24 that communicates with the outlet side of the.
【００１７】そして、前記両センサブロック６、９間に
能力評価を行う対象としての試験体熱交換器Ｓが接続さ
れる。この場合、試験体熱交換器Ｓの端部はフレア加工
されており、この端部を両センサブロック６、９のフレ
ア接続部に対応させて接続する。従って、試験体熱交換
器Ｓの着脱作業は極めて容易となる。また、２６は試験
体熱交換器Ｓと第一のセンサブロック６間に接続された
サービスバルブである。A test-body heat exchanger S, which is a target for performance evaluation, is connected between the sensor blocks 6 and 9. In this case, the end portion of the test body heat exchanger S is flared, and this end portion is connected so as to correspond to the flare connection portions of both sensor blocks 6 and 9. Therefore, the work of attaching and detaching the test body heat exchanger S becomes extremely easy. Reference numeral 26 is a service valve connected between the test body heat exchanger S and the first sensor block 6.
【００１８】一方、２７はカロリーメーターであり、試
験体熱交換器Ｓに対応して設けられる。このカロリーメ
ーター２７は試験体熱交換器Ｓに通風し、その通風量と
試験体熱交換器Ｓの吸込側及び出口側の空気温度差を測
定可能とされている機器である。係る能力試験装置１内
には所定量のフロン冷媒が封入されており、試験体熱交
換器Ｓの能力評価を行う際には、前述の如く第一センサ
ブロック６及び第二センサブロック９間に試験体熱交換
器Ｓを接続する。On the other hand, 27 is a calorimeter, which is provided corresponding to the test body heat exchanger S. The calorimeter 27 is a device that ventilates the test body heat exchanger S and can measure the amount of ventilation and the difference in air temperature between the suction side and the outlet side of the test body heat exchanger S. A predetermined amount of chlorofluorocarbon refrigerant is enclosed in the capacity test device 1 and, when the capacity of the test body heat exchanger S is evaluated, as described above, it is placed between the first sensor block 6 and the second sensor block 9. The test body heat exchanger S is connected.
【００１９】次に、図２のモリエル線図を参照しながら
動作（使用方法）を説明する。冷媒圧縮機２及び送風機
７を所定の回転数で運転すると、冷媒圧縮機２から吐出
された高温高圧のガス冷媒（図２のｂ）は油分離器３で
油を分離された後、副熱交換器４に流入する。この副熱
交換器４には送風機７から通風されており、ここで冷媒
は放熱する。そして、副熱交換器４を出た冷媒は第一の
センサブロック６を経て試験体熱交換器Ｓに流入する。
この試験体熱交換器Ｓにもカロリーメーター２７から通
風されており、冷媒は放熱して凝縮された後、第二のセ
ンサブロック９を経てサイトグラス１１及び冷媒流量計
１２を通過し（図２のｃ）、手動膨張弁１３にて減圧さ
れた後（図２のｄ）、熱交換器１６に流入する。Next, the operation (usage) will be described with reference to the Mollier diagram of FIG. When the refrigerant compressor 2 and the blower 7 are operated at a predetermined rotation speed, the high-temperature and high-pressure gas refrigerant (b in FIG. 2) discharged from the refrigerant compressor 2 is separated from the oil by the oil separator 3 and then the auxiliary heat is generated. It flows into the exchanger 4. The sub heat exchanger 4 is ventilated from the blower 7, where the refrigerant radiates heat. Then, the refrigerant discharged from the sub heat exchanger 4 flows into the test body heat exchanger S via the first sensor block 6.
The test body heat exchanger S is also ventilated from the calorimeter 27, the refrigerant radiates heat and is condensed, and then passes through the second sensor block 9 and the sight glass 11 and the refrigerant flow meter 12 (see FIG. 2). C), the pressure is reduced by the manual expansion valve 13 (d in FIG. 2), and then flows into the heat exchanger 16.
【００２０】熱交換器１６に流入した冷媒はここで蒸発
し（従って、この場合熱交換器１６は蒸発器となる）、
気液分離器１９を経て未蒸発の液冷媒を分離された後、
ガス冷媒のみが冷媒圧縮機２に吸い込まれる循環を行う
（図２のａ）。このとき、サイトグラス１１を見ながら
そこで冷媒状態を直接把握することにより（実際にはそ
こで冷媒が液となるように）手動膨張弁１３を調整し、
冷媒回路内の冷媒循環量を調整する。また、受液器２２
の入口側の閉止弁２３を開けば、冷媒回路内の冷媒がバ
イパス回路２１を経て受液器２２内に回収され、出口側
の閉止弁２３を開けば受液器２２内に貯留された冷媒が
キャピラリーチューブ２４を経て冷媒回路内に流出され
る。The refrigerant flowing into the heat exchanger 16 evaporates here (hence the heat exchanger 16 in this case is an evaporator),
After separating the non-evaporated liquid refrigerant through the gas-liquid separator 19,
Circulation is performed in which only the gas refrigerant is sucked into the refrigerant compressor 2 (a in FIG. 2). At this time, the manual expansion valve 13 is adjusted by directly grasping the refrigerant state there while looking at the sight glass 11 (so that the refrigerant actually becomes liquid there),
Adjust the amount of refrigerant circulation in the refrigerant circuit. Also, the receiver 22
The refrigerant in the refrigerant circuit is recovered in the liquid receiver 22 via the bypass circuit 21 by opening the stop valve 23 on the inlet side, and the refrigerant stored in the liquid receiver 22 is opened by opening the stop valve 23 on the outlet side. Is discharged into the refrigerant circuit through the capillary tube 24.
【００２１】以上によって、試験体熱交換器Ｓの出口側
の過冷却度が調整できる。また、送風機７及び又は冷媒
圧縮機２の回転数を調整して副熱交換器４における放熱
を調整することによって、試験体熱交換器Ｓの入口側の
過熱度が調整できる。これによって、異なった能力の試
験体熱交換器Ｓの能力を測定できる。この状態を図３及
び図４にて説明する。図３は副熱交換器４における凝縮
能力を前述の如く増大することにより、副熱交換器４か
ら第一のセンサブロック６（試験体熱交換器Ｓの入口）
までの過熱度の差Ｘ１を大きくして試験体熱交換器Ｓの
入口における過熱度を小さくし、また、受液器２２に冷
媒を貯留し、冷媒循環量を減少させることにより、第二
センサブロック９（試験体熱交換器Ｓの出口）から手動
膨張弁１３までの過冷却度の差Ｙ１を大きくして試験体
熱交換器Ｓの出口における過冷却度も小さく設定した状
態を示している。By the above, the degree of supercooling on the outlet side of the test body heat exchanger S can be adjusted. Moreover, the superheat degree on the inlet side of the test body heat exchanger S can be adjusted by adjusting the rotation speed of the blower 7 and / or the refrigerant compressor 2 to adjust the heat radiation in the sub heat exchanger 4. This allows the capacity of the test body heat exchanger S of different capacity to be measured. This state will be described with reference to FIGS. 3 and 4. FIG. 3 shows that by increasing the condensing capacity of the sub heat exchanger 4 as described above, the sub heat exchanger 4 to the first sensor block 6 (the inlet of the test body heat exchanger S).
To decrease the superheat degree at the inlet of the test body heat exchanger S, and to store the refrigerant in the liquid receiver 22 to reduce the refrigerant circulation amount. The state in which the difference Y1 in the degree of supercooling from the block 9 (outlet of the test body heat exchanger S) to the manual expansion valve 13 is increased and the degree of subcooling at the outlet of the test body heat exchanger S is also set small is shown. .
【００２２】また、図４は副熱交換器４における凝縮能
力を前述の如く減少させることにより、副熱交換器４か
ら第一のセンサブロック６（試験体熱交換器Ｓの入口）
までの過熱度の差Ｘ２を小さくして試験体熱交換器Ｓの
入口における過熱度を大きくし、また、受液器２２から
冷媒を流出させ、冷媒循環量を増大することにより、第
二センサブロック９（試験体熱交換器Ｓの出口）から手
動膨張弁１３までの過冷却度の差Ｙ２を小さくして試験
体熱交換器Ｓの出口における過冷却度を大きく設定した
状態を示している。Further, in FIG. 4, the condensing capacity of the sub heat exchanger 4 is reduced as described above, so that the sub heat exchanger 4 to the first sensor block 6 (the inlet of the sample heat exchanger S).
To increase the degree of superheat at the inlet of the test body heat exchanger S, and to make the refrigerant flow out from the liquid receiver 22 to increase the refrigerant circulation amount. It shows a state in which the difference Y2 in the degree of supercooling from the block 9 (the outlet of the test body heat exchanger S) to the manual expansion valve 13 is made small and the degree of supercooling at the outlet of the test body heat exchanger S is set large. .
【００２３】このような調整によって、測定する試験体
熱交換器Ｓの容量に合わせ、両センサブロック６、９の
温度センサに基づき、試験体熱交換器Ｓの入口（第一セ
ンサブロック６）における温度を例えば＋４５℃、出口
（第二センサブロック９）における温度を例えば＋３８
℃に調整する。これら温度ｔの差が図２に示す如く試験
体熱交換器Ｓの凝縮効果であり、これに冷媒流量計１２
で測定した冷媒循環量を乗じた値が試験体熱交換器Ｓの
凝縮器としての能力として評価できる。By such adjustment, according to the capacity of the test-body heat exchanger S to be measured, based on the temperature sensors of both sensor blocks 6 and 9, at the inlet (first sensor block 6) of the test-body heat exchanger S. The temperature is, for example, + 45 ° C., and the temperature at the outlet (second sensor block 9) is, for example, +38.
Adjust to ℃. The difference between these temperatures t is the condensation effect of the test body heat exchanger S as shown in FIG.
The value obtained by multiplying the refrigerant circulation amount measured in 1. can be evaluated as the capacity of the test body heat exchanger S as a condenser.
【００２４】尚、カロリーメーター２７によっても試験
体熱交換器Ｓへの通風量と試験体熱交換器Ｓの吸込側及
び出口側の空気温度差を測定して、それらの値を基に試
験体熱交換器Ｓの凝縮器としての能力を評価することが
可能である。また、各センサブロック６、９には圧力セ
ンサも設けられているので、各圧力センサに基づき、試
験体熱交換器Ｓ内部の冷媒通過圧力損失も測定すること
ができる。また、試験体熱交換器Ｓの評価が終了した
ら、これを取り外して次の仕切板熱交換器を接続するも
のであるが、各センサブロック６、９には前述の如く閉
止弁が設けられ、閉止弁と試験体熱交換器Ｓの間にはサ
ービスバルブ２６を設けたので、試験体熱交換器Ｓを交
換する際に、サービスバルブ２６に真空ポンプを接続し
て、容易に試験体熱交換器Ｓ内部を真空引きすることが
できるようになる。The calorimeter 27 is also used to measure the air flow rate to the test body heat exchanger S and the air temperature difference between the suction side and the outlet side of the test body heat exchanger S, and based on these values, the test body is tested. It is possible to evaluate the ability of the heat exchanger S as a condenser. Further, since each sensor block 6 and 9 is also provided with a pressure sensor, the refrigerant passing pressure loss inside the test body heat exchanger S can also be measured based on each pressure sensor. Further, when the evaluation of the test body heat exchanger S is completed, the heat exchanger S is removed and the next partition plate heat exchanger is connected. However, each sensor block 6, 9 is provided with a shutoff valve as described above. Since the service valve 26 is provided between the shutoff valve and the test body heat exchanger S, when the test body heat exchanger S is replaced, a vacuum pump is connected to the service valve 26 to facilitate the test body heat exchange. The inside of the container S can be evacuated.
【００２５】また、受液器２２の出口側にはキャピラリ
ーチューブ２４を設けたので、冷媒流量を増やすために
受液器２２から冷媒を流出させる際に、一度に大量の冷
媒が流出することを防止できるようなる。従って、微妙
な循環量調整と、冷媒圧縮機２の液圧縮を防止できるよ
うになる。以上は、本発明の能力試験装置１によって、
試験体熱交換器Ｓの凝縮器としての能力評価を行う場合
について説明したが、蒸発器としての能力評価を行う場
合には、図５の如く配管の接続を変更する。Further, since the capillary tube 24 is provided on the outlet side of the liquid receiver 22, it is possible to prevent a large amount of the refrigerant from flowing out at one time when the refrigerant is discharged from the liquid receiver 22 to increase the flow rate of the refrigerant. Can be prevented. Therefore, it becomes possible to delicately adjust the circulation amount and prevent liquid compression of the refrigerant compressor 2. The above is the performance test apparatus 1 of the present invention.
The case of performing the capacity evaluation of the test body heat exchanger S as the condenser has been described. However, when performing the capacity evaluation of the evaporator, the connection of the pipes is changed as shown in FIG.
【００２６】即ち、この場合には、副熱交換器４の出口
を熱交換器１６の一端（図１の出口側）に接続し、熱交
換器１６の他端（図１の入口側）を冷媒流量計１２に接
続する。また、手動膨張弁１３を第一のセンサブロック
６に接続し、サイトグラス１１を気液分離器１９にそれ
ぞれ接続している。係る接続によれば、冷媒圧縮機２か
ら吐出された高温高圧のガス冷媒は、副熱交換器４及び
熱交換器１６にて凝縮された後（従って、この場合熱交
換器１６は凝縮器となる）、冷媒流量計１２を経て手動
膨張弁１３にて減圧された後、センサブロック６を経て
試験体熱交換器Ｓに流入して蒸発する。そして、試験体
熱交換器Ｓから流出し、センサブロック９、サイトグラ
ス１１を経て気液分離器１９にて気液分離された後、冷
媒圧縮機２に吸い込まれる循環を行うようになる。That is, in this case, the outlet of the auxiliary heat exchanger 4 is connected to one end of the heat exchanger 16 (outlet side in FIG. 1), and the other end (inlet side in FIG. 1) of the heat exchanger 16 is connected. It is connected to the refrigerant flow meter 12. Further, the manual expansion valve 13 is connected to the first sensor block 6, and the sight glass 11 is connected to the gas-liquid separator 19, respectively. According to such a connection, the high-temperature and high-pressure gas refrigerant discharged from the refrigerant compressor 2 is condensed in the sub heat exchanger 4 and the heat exchanger 16 (hence, in this case, the heat exchanger 16 becomes a condenser). After being decompressed by the manual expansion valve 13 via the refrigerant flow meter 12, it flows into the test-body heat exchanger S via the sensor block 6 and evaporates. Then, after flowing out from the test body heat exchanger S, passing through the sensor block 9 and the sight glass 11 and being gas-liquid separated by the gas-liquid separator 19, the refrigerant compressor 2 is circulated.
【００２７】この場合も前述同様に試験体熱交換器Ｓの
容量に合わせ、手動膨張弁１３、閉止弁２３、２３及び
送風機７、冷媒圧縮機２を調整する。そして、この場合
の試験体熱交換器Ｓにおける冷凍効果は、図６に示す如
く両センサブロック６、９間の温度差から割り出され、
これに冷媒循環量を乗じたものから試験体熱交換器Ｓの
蒸発器としての能力を評価することができるようにな
る。In this case as well, the manual expansion valve 13, the shutoff valves 23, 23, the blower 7, and the refrigerant compressor 2 are adjusted in accordance with the capacity of the test body heat exchanger S as described above. The refrigerating effect in the test body heat exchanger S in this case is calculated from the temperature difference between the sensor blocks 6 and 9 as shown in FIG.
By multiplying this by the refrigerant circulation amount, it becomes possible to evaluate the capacity of the test body heat exchanger S as an evaporator.
【００２８】[0028]
【発明の効果】以上詳述した如く本発明によれば、冷媒
圧縮機によって実際に冷媒を熱交換器内に流している状
態で、カロリーメーターによる通風量と試験体熱交換器
前後の空気温度などから試験体熱交換器の凝縮器として
の能力評価を正確に行うことが可能となるのに加えて、
手動膨張弁を操作して第一の接続部における過熱度、及
び、第二の接続部における過冷却度を調整し、これらと
冷媒流量を各センサ及び冷媒流量計により把握すること
によって、試験体熱交換器の凝縮効果と冷媒循環量から
試験体熱交換器の凝縮器としての能力評価を行うことが
できるようになる。As described above in detail, according to the present invention, the amount of ventilation by the calorimeter and the air temperature before and after the test heat exchanger are measured while the refrigerant is actually flowing through the heat exchanger by the refrigerant compressor. In addition to making it possible to accurately evaluate the capacity of the test body heat exchanger as a condenser,
By operating the manual expansion valve to adjust the degree of superheat at the first connection and the degree of supercooling at the second connection, and by grasping these and the refrigerant flow rate with each sensor and refrigerant flow meter, the test body From the condensation effect of the heat exchanger and the refrigerant circulation amount, it becomes possible to evaluate the capacity of the test body heat exchanger as a condenser.
【００２９】従って、試験体熱交換器の冷媒凝縮能力を
正確、且つ、安価に評価することが可能となるものであ
る。また、請求項２の発明によれば、上記に加えて手動
膨張弁の入口側と出口側をバイパスする配管を設け、こ
の配管には受液器を介設し、この受液器の出入口には閉
止弁を取り付けたので、手動膨張弁にて冷媒流量を調整
する際に、この変化分の冷媒を受液器内に貯留しておく
ことができる。従って、試験体熱交換器の容量変化に的
確に対処し、主に第二の接続部における過冷却度の調整
を極めて円滑に行えるようになるものである。Therefore, it is possible to evaluate the refrigerant condensing capacity of the test-body heat exchanger accurately and inexpensively. According to the invention of claim 2, in addition to the above, a pipe for bypassing the inlet side and the outlet side of the manual expansion valve is provided, and a liquid receiver is provided in this pipe, and at the inlet and outlet of this liquid receiver. Since the shut-off valve is attached, when the flow rate of the refrigerant is adjusted by the manual expansion valve, the changed amount of the refrigerant can be stored in the liquid receiver. Therefore, the capacity change of the test-body heat exchanger can be appropriately dealt with, and the degree of supercooling mainly at the second connection portion can be adjusted extremely smoothly.
【００３０】請求項３の発明によれば、上記に加えて受
液器の出口側にキャピラリーチューブを設けたので、冷
媒流量を増やすために受液器から冷媒を流出させる際
に、一度に大量の冷媒が流出することを防止できるよう
なり、微妙な循環量調整と、冷媒圧縮機の液圧縮の防止
を実現することができるようになるものである。請求項
４の発明によれば、請求項１に加えて両接続部をフレア
構造としたので、接続部間に接続する試験体熱交換器を
極めて容易に交換することができるようになり、試験を
連続して実施し、能力評価の効率化を実現することがで
きるようになるものである。。According to the invention of claim 3, in addition to the above, since the capillary tube is provided on the outlet side of the liquid receiver, a large amount of the refrigerant is discharged at a time when the refrigerant is discharged from the liquid receiver in order to increase the flow rate of the refrigerant. The refrigerant can be prevented from flowing out, and the delicate adjustment of the circulation amount and the prevention of the liquid compression of the refrigerant compressor can be realized. According to the invention of claim 4, in addition to claim 1, both connection parts have a flare structure, so that the test body heat exchanger connected between the connection parts can be replaced very easily, and the test Will be carried out continuously, and the efficiency of capacity evaluation can be improved. .
【００３１】請求項５の発明によれば、請求項１に加え
て副熱交換器に通風する送風機を設け、冷媒圧縮機及び
／又は送風機の能力を可変としたので、試験体熱交換器
の容量変化に的確に対処し、主に第一の接続部における
過熱度の調整を極めて円滑に行えるようになるものであ
る。請求項６の発明によれば、請求項１に加えて熱交換
器を恒温水槽内に設置したので、熱交換器に一定の負荷
を与えて試験装置の冷媒回路を安定させることが可能と
なるものである。According to the invention of claim 5, in addition to claim 1, a blower for ventilating the sub heat exchanger is provided, and the capacity of the refrigerant compressor and / or the blower is made variable. The capacity change can be dealt with accurately, and the adjustment of the degree of superheat in the first connecting portion can be performed extremely smoothly. According to the invention of claim 6, in addition to claim 1, the heat exchanger is installed in the constant temperature water tank, so that a constant load can be applied to the heat exchanger to stabilize the refrigerant circuit of the test apparatus. It is a thing.
【００３２】請求項７の発明によれば、請求項１に加え
て第二の接続部にサイトグラスを接続したので、試験体
熱交換器を出た冷媒の実際の状態（ガス／液）を把握す
ることができるようになり、前述の如き過熱度・過冷却
度の調整を一層的確に実行することができるようになる
ものでる。請求項８の発明によれば、請求項１に加えて
各接続部にそれぞれ圧力センサを設けたので、各圧力セ
ンサに基づき、試験体熱交換器内部の冷媒通過圧力損失
を測定し、更に的確、且つ、総合的な能力評価を実現す
ることが可能となるものである。According to the invention of claim 7, since the sight glass is connected to the second connecting portion in addition to the structure of claim 1, the actual state (gas / liquid) of the refrigerant exiting the heat exchanger for the test sample is determined. As a result, the degree of superheat / subcooling can be adjusted more accurately as described above. According to the invention of claim 8, in addition to claim 1, each connection part is provided with a pressure sensor. Therefore, based on each pressure sensor, the refrigerant passing pressure loss inside the test body heat exchanger is measured, and a more accurate measurement is performed. In addition, it is possible to realize comprehensive ability evaluation.
【００３３】請求項９の発明によれば、請求項１に加え
て各接続部に閉止弁を設け、閉止弁と試験体熱交換器の
間にはサービスバルブを設けたので、試験体熱交換器を
交換する際に、サービスバルブに真空ポンプを接続し
て、容易に試験体熱交換器内部を真空引きすることがで
きるようになり、試験体熱交換器の交換作業を一層円滑
化し、且つ、冷媒漏洩を防止、若しくは、抑制すること
が可能となるものである。According to the invention of claim 9, in addition to claim 1, a closing valve is provided in each connection portion, and a service valve is provided between the closing valve and the heat exchanger of the test body. When exchanging the heat exchanger, a vacuum pump can be connected to the service valve to easily evacuate the inside of the heat exchanger of the test sample, further facilitating the replacement work of the heat exchanger of the test sample, and Therefore, it becomes possible to prevent or suppress the leakage of the refrigerant.
【００３４】請求項１０の発明によれば、上記各発明に
おいて副熱交換器の出口を熱交換器の一端に、熱交換器
の他端を冷媒流量計に、手動膨張弁を第一の接続部に、
第二の接続部を気液分離器にそれぞれ接続変更可能とし
たので、配管接続を変更するだけで試験体熱交換器への
冷媒流通を逆転し、試験体熱交換器の蒸発器としての能
力評価も可能となるものである。According to the invention of claim 10, in each of the above inventions, the outlet of the auxiliary heat exchanger is connected to one end of the heat exchanger, the other end of the heat exchanger is connected to the refrigerant flow meter, and the manual expansion valve is first connected. To the department
Since the second connection part can be connected to the gas-liquid separator respectively, the refrigerant flow to the sample heat exchanger can be reversed by simply changing the pipe connection, and the capacity of the sample heat exchanger as an evaporator can be changed. Evaluation is also possible.
【００３５】請求項１１の発明によれば、冷媒圧縮機に
よって実際に冷媒を熱交換器内に流している状態で、カ
ロリーメーターによる通風量と試験体熱交換器前後の空
気温度などから試験体熱交換器の蒸発器としての能力評
価を正確に行うことが可能となるのに加えて、手動膨張
弁を操作して両接続部における温度を調整し、これらと
冷媒流量を各センサ及び冷媒流量計により把握すること
によって、試験体熱交換器の冷凍効果と冷媒循環量から
試験体熱交換器の蒸発器としての能力評価を行うことが
できるようになる。According to the eleventh aspect of the present invention, in the state where the refrigerant is actually being flown into the heat exchanger by the refrigerant compressor, the test body is determined from the amount of ventilation by the calorimeter and the air temperature before and after the heat exchanger of the test body. In addition to making it possible to accurately evaluate the capacity of the heat exchanger as an evaporator, the manual expansion valve is operated to adjust the temperature at both connection parts, and these and the refrigerant flow rate are measured by each sensor and the refrigerant flow rate. By grasping with a meter, it becomes possible to evaluate the capacity of the test sample heat exchanger as an evaporator from the refrigerating effect of the test sample heat exchanger and the refrigerant circulation amount.
【００３６】従って、試験体熱交換器の冷凍能力を正
確、且つ、安価に評価することが可能となるものであ
る。Therefore, the refrigerating capacity of the test-body heat exchanger can be evaluated accurately and inexpensively.
【図１】本発明の能力試験装置にて試験体熱交換器の凝
縮器としての能力を測定する場合の冷媒回路図である。FIG. 1 is a refrigerant circuit diagram in the case of measuring the capacity of a test body heat exchanger as a condenser with a capacity test device of the present invention.
【図２】本発明の能力試験装置の動作を説明するモリエ
ル線図である。FIG. 2 is a Mollier diagram for explaining the operation of the ability testing device of the present invention.
【図３】本発明の能力試験装置の動作を説明するもう一
つのモリエル線図である。FIG. 3 is another Mollier diagram for explaining the operation of the ability testing device of the present invention.
【図４】本発明の能力試験装置の動作を説明する更にも
う一つのモリエル線図である。FIG. 4 is still another Mollier diagram for explaining the operation of the ability testing apparatus of the present invention.
【図５】本発明の能力試験装置にて試験体熱交換器の蒸
発器としての能力を測定する場合の冷媒回路図である。FIG. 5 is a refrigerant circuit diagram when the capacity of the test body heat exchanger as an evaporator is measured by the capacity testing device of the present invention.
【図６】図５における能力試験装置の動作を説明するモ
リエル線図である。FIG. 6 is a Mollier diagram for explaining the operation of the ability testing device in FIG.
１ 能力試験装置 ２ 冷媒圧縮機 ４ 副熱交換器 ６ 第一のセンサブロック（第一の接続部） ９ 第二のセンサブロック（第二の接続部） １１ サイトグラス １２ 冷媒流量計 １３ 手動膨張弁 １６ 熱交換器 １８ 恒温水槽 １９ 気液分離器 ２１ バイパス回路 ２２ 受液器 ２３ 閉止弁 ２６ サービスバルブ ２７ カロリーメーター Ｓ 試験体熱交換器 1 Capacity Testing Device 2 Refrigerant Compressor 4 Sub Heat Exchanger 6 First Sensor Block (First Connection Part) 9 Second Sensor Block (Second Connection Part) 11 Sight Glass 12 Refrigerant Flow Meter 13 Manual Expansion Valve 16 Heat Exchanger 18 Constant Temperature Water Bath 19 Gas-Liquid Separator 21 Bypass Circuit 22 Liquid Receiver 23 Stop Valve 26 Service Valve 27 Calorimeter S Specimen Heat Exchanger
Claims (11)
器の熱交換能力を測定可能とされた熱交換器の能力試験
装置において、 冷媒圧縮機、副熱交換器、第一の接続部、第二の接続
部、冷媒流量計、手動膨張弁、熱交換器、気液分離器
を、前記両接続部間を除き順次配管接続し、前記両接続
部間に前記試験体熱交換器を接続すると共に、各接続部
にはそれぞれ温度センサを設けたことを特徴とする熱交
換器の能力試験装置。1. A heat exchanger capacity test device capable of measuring the heat exchange capacity of a test body heat exchanger using a calorimeter, comprising: a refrigerant compressor, an auxiliary heat exchanger, a first connection part, The second connection part, the refrigerant flow meter, the manual expansion valve, the heat exchanger, and the gas-liquid separator are sequentially pipe-connected except between the both connection parts, and the test body heat exchanger is connected between the both connection parts. At the same time, a temperature sensor is provided at each connection portion, and the heat exchanger capacity test device is characterized.
する配管を設け、この配管には受液器を介設し、この受
液器の出入口には閉止弁を取り付けたことを特徴とする
請求項１の熱交換器の能力試験装置。2. A pipe for bypassing an inlet side and an outlet side of the manual expansion valve is provided, a liquid receiver is provided in the pipe, and a shutoff valve is attached to an inlet and an outlet of the liquid receiver. The heat exchanger capacity test device according to claim 1.
を設けたことを特徴とする請求項２の熱交換器の能力試
験装置。3. The capacity test device for a heat exchanger according to claim 2, wherein a capillary tube is provided on the outlet side of the liquid receiver.
とする請求項１の熱交換器の能力試験装置。4. The heat exchanger capacity test device according to claim 1, wherein both connecting portions have a flare structure.
媒圧縮機及び／又は前記送風機の能力を可変としたこと
を特徴とする請求項１の熱交換器の能力試験装置。5. The heat exchanger capacity test device according to claim 1, wherein a blower for ventilating the sub heat exchanger is provided, and the capacity of the refrigerant compressor and / or the blower is variable.
特徴とする請求項１の熱交換器の能力試験装置。6. The heat exchanger capacity test device according to claim 1, wherein the heat exchanger is installed in a constant temperature water tank.
ことを特徴とする請求項１の熱交換器の能力試験装置。7. The heat exchanger capacity test device according to claim 1, wherein a sight glass is connected to the second connecting portion.
たことを特徴とする請求項１の熱交換器の能力試験装
置。8. The heat exchanger capacity test device according to claim 1, wherein each connection portion is provided with a pressure sensor.
試験体熱交換器の間にはサービスバルブを設けたことを
特徴とする請求項１の熱交換器の能力試験装置。9. The heat exchanger capacity test device according to claim 1, wherein a shutoff valve is provided at each connection portion, and a service valve is provided between the shutoff valve and the test body heat exchanger.
に、熱交換器の他端を冷媒流量計に、手動膨張弁を第一
の接続部に、第二の接続部を気液分離器にそれぞれ接続
変更可能とされていることを特徴とする請求項１、請求
項２、請求項３、請求項４、請求項５、請求項６、請求
項７、請求項８又は請求項９の熱交換器の能力試験装
置。10. The outlet of the auxiliary heat exchanger is connected to one end of the heat exchanger, the other end of the heat exchanger is connected to the refrigerant flow meter, the manual expansion valve is connected to the first connecting portion, and the second connecting portion is connected to the gas-liquid portion. It is possible to change the connection to each of the separators, Claim 1, Claim 2, Claim 3, Claim 4, Claim 5, Claim 6, Claim 7, Claim 8 or Claim. 9. Heat exchanger capacity test device.
換器の熱交換能力を測定可能とされた熱交換器の能力試
験装置において、 冷媒圧縮機、副熱交換器、熱交換器、冷媒流量計、手動
膨張弁、第一の接続部、第二の接続部、気液分離器を、
前記接続部間を除き順次配管接続し、前記両接続部間に
前記試験体熱交換器を接続すると共に、各接続部にはそ
れぞれ温度センサを設けたことを特徴とする熱交換器の
能力試験装置。11. A heat exchanger capacity test apparatus capable of measuring the heat exchange capacity of a test body heat exchanger using a calorimeter, comprising: a refrigerant compressor, a sub heat exchanger, a heat exchanger, and a refrigerant flow meter. , Manual expansion valve, first connection, second connection, gas-liquid separator,
Except for between the connecting portions, the pipes are sequentially connected to each other, and the test-body heat exchanger is connected between the connecting portions, and a temperature sensor is provided at each connecting portion. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22206395A JPH0968370A (en) | 1995-08-30 | 1995-08-30 | Capacity testing device for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22206395A JPH0968370A (en) | 1995-08-30 | 1995-08-30 | Capacity testing device for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0968370A true JPH0968370A (en) | 1997-03-11 |
Family
ID=16776534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22206395A Pending JPH0968370A (en) | 1995-08-30 | 1995-08-30 | Capacity testing device for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0968370A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100603502B1 (en) * | 2006-01-05 | 2006-07-24 | 오상택 | Car egr cooler thermal cycle test system |
| JP2014081251A (en) * | 2012-10-16 | 2014-05-08 | Sanki Eng Co Ltd | Water cooled type transmission oil heat exchanger test system |
| CN107288850A (en) * | 2017-06-23 | 2017-10-24 | 浙江凯尼真空设备有限公司 | A kind of energy-saving type vacuum pump water tank cooling down device |
-
1995
- 1995-08-30 JP JP22206395A patent/JPH0968370A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100603502B1 (en) * | 2006-01-05 | 2006-07-24 | 오상택 | Car egr cooler thermal cycle test system |
| JP2014081251A (en) * | 2012-10-16 | 2014-05-08 | Sanki Eng Co Ltd | Water cooled type transmission oil heat exchanger test system |
| CN107288850A (en) * | 2017-06-23 | 2017-10-24 | 浙江凯尼真空设备有限公司 | A kind of energy-saving type vacuum pump water tank cooling down device |
| CN107288850B (en) * | 2017-06-23 | 2019-07-05 | 浙江凯尼真空设备有限公司 | A kind of energy-saving type vacuum pump water tank cooling down device |
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