JPH06235556A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH06235556A JPH06235556A JP2231593A JP2231593A JPH06235556A JP H06235556 A JPH06235556 A JP H06235556A JP 2231593 A JP2231593 A JP 2231593A JP 2231593 A JP2231593 A JP 2231593A JP H06235556 A JPH06235556 A JP H06235556A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heating circuit
- heating
- heat exchanger
- pressure
- 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
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、冷媒の加熱による暖房
と、圧縮機と熱交換器による冷房を併せて利用する空気
調和機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner which utilizes both heating by heating a refrigerant and cooling by a compressor and a heat exchanger.
【0002】[0002]
【従来の技術】従来この種の冷媒加熱により暖房と圧縮
機と熱交換器による冷房を併せて行なう空気調和機とし
て、例えば特開昭57−101263号公報に示される
図3のような構成のものがある。2. Description of the Related Art Conventionally, as an air conditioner which performs heating by this type of refrigerant heating and cooling by a compressor and a heat exchanger, for example, a structure as shown in FIG. 3 shown in Japanese Patent Laid-Open No. 57-101263 is shown. There is something.
【0003】即ち、圧縮機1、流路切換弁2、室外送風
機3を有する室外熱交換器4、第1電磁弁5、キャピラ
リチューブ6、室内送風機7を有する室内熱交換器8、
第2電磁弁9、逆止弁10、アキュムレータ11を順次
配管接続して循環路を構成し、さらに第3電磁弁12、
冷媒ポンプ13、バーナ14を有する冷媒加熱器15を
直列に配管接続した直列配管回路をキャピラリチューブ
6の下流と第2電磁弁9の上流との間に接続した回路に
作動媒体として冷媒を封入している。That is, an outdoor heat exchanger 4 having a compressor 1, a flow path switching valve 2, an outdoor blower 3, a first electromagnetic valve 5, a capillary tube 6, an indoor heat exchanger 8 having an indoor blower 7,
A second solenoid valve 9, a check valve 10, and an accumulator 11 are sequentially connected by piping to form a circulation path, and a third solenoid valve 12,
Refrigerant pump 13 and a refrigerant heater 15 having a burner 14 are connected in series to connect a series piping circuit between the downstream side of the capillary tube 6 and the upstream side of the second solenoid valve 9 and the refrigerant is sealed as a working medium. ing.
【0004】そして、暖房運転は第1電磁弁5を閉じて
圧縮機1の駆動により室外熱交換器4側の冷媒を全て冷
媒加熱器15側に移す汲み上げ運転の後に、冷媒加熱器
15をバーナ14で加熱することにより蒸発させ、室内
熱交換機8を凝縮器とし、冷媒ポンプ13を冷媒搬送手
段として暖房サイクルを構成し、さらに冷房は圧縮機1
駆動による従来方式の冷房サイクルを構成している。In the heating operation, the first electromagnetic valve 5 is closed and the compressor 1 is driven to move all the refrigerant on the outdoor heat exchanger 4 side to the refrigerant heater 15 side, and then the refrigerant heater 15 is burned. A heating cycle is configured by using the indoor heat exchanger 8 as a condenser and the refrigerant pump 13 as a refrigerant transporting means to evaporate by heating with the compressor 1.
It constitutes a conventional cooling cycle by driving.
【0005】また、従来他の冷媒加熱により暖房を行な
う空気調和機として、冷房は圧縮機駆動による従来方式
で行ない、暖房はこの冷房用の圧縮機を冷媒ガスポンプ
として作用させるもの(図示せず)もある。Further, as an air conditioner for heating by using other refrigerant heating, conventionally, cooling is performed by a conventional method driven by a compressor, and heating is performed by using this cooling compressor as a refrigerant gas pump (not shown). There is also.
【0006】[0006]
【発明が解決しようとする課題】しかしながら、上記の
様な従来の冷房、暖房のハイブリッド回路においては、
暖房運転中、冷媒が外部に漏れると冷媒が不足し冷媒加
熱器で過熱を生じ、冷媒充填量を適正量より多くなると
運転中の冷媒圧力が上昇し暖房能力を維持できなかっ
た。However, in the conventional cooling and heating hybrid circuit as described above,
During the heating operation, if the refrigerant leaks to the outside, the refrigerant becomes insufficient and overheats in the refrigerant heater. If the refrigerant charging amount exceeds the proper amount, the refrigerant pressure during operation increases and the heating capacity cannot be maintained.
【0007】本発明は、このような従来の課題を解決す
るもので、冷媒充填量を適正量より多くし、暖房回路の
冷媒量を回路中で適正に調整する事により安定冷媒加熱
運転する空気調和機を提供することを目的とする。The present invention solves such a conventional problem, and air for stable refrigerant heating operation by increasing the refrigerant charge amount more than an appropriate amount and appropriately adjusting the refrigerant amount in the heating circuit in the circuit. The purpose is to provide a harmony machine.
【0008】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するため、冷媒加熱器と、熱搬送部と、室内熱交換器と
を順次配管接続した暖房回路と、一端は流路切換弁を介
し他端は開閉弁を介して前記暖房回路に付加接続した室
外熱交換器と圧縮機を有する冷房回路と、前記暖房回路
に設けた冷媒圧力検知手段と、前記室内放熱器の空気吸
い込み部に設けた温度検知手段と、この温度検知手段の
温度が所定の温度以下でかつ前記冷媒圧力検知手段の圧
力が所定以上になる時は、前記開閉弁を一定時間開弁す
る制御装置を構成としている。In order to achieve the above object, the present invention has a heating circuit in which a refrigerant heater, a heat transfer section, and an indoor heat exchanger are sequentially connected by piping, and a flow path switching valve is provided at one end. The other end is connected to the heating circuit via an opening / closing valve, and is connected to the heating circuit. The cooling circuit has an outdoor heat exchanger and a compressor, the refrigerant pressure detecting means provided in the heating circuit, and the air intake section of the indoor radiator. The temperature detecting means is provided, and a control device is configured to open the on-off valve for a certain period of time when the temperature of the temperature detecting means is below a predetermined temperature and the pressure of the refrigerant pressure detecting means is above a predetermined temperature. .
【0009】[0009]
【作用】本発明は上記構成により、冷媒充填量を適正量
より多くし、室内放熱器の空気吸い込み部に設けた温度
検知手段により室内温度を検知し、この室内温度が所定
の温度以下で時暖房回路に設けた冷媒圧力検知手段によ
り検知した冷媒の圧力が所定以上になる時は、冷房回路
と暖房回路を分離する開閉弁を一定時間開弁する構成と
して、暖房回路の冷媒を冷房回路に移動させ、暖房回路
の冷媒量を適正に調整する。According to the present invention, the refrigerant filling amount is made larger than an appropriate amount and the room temperature is detected by the temperature detecting means provided in the air suction portion of the indoor radiator when the room temperature is equal to or lower than the predetermined temperature. When the pressure of the refrigerant detected by the refrigerant pressure detection means provided in the heating circuit becomes equal to or higher than a predetermined value, the opening / closing valve for separating the cooling circuit and the heating circuit is opened for a certain period of time, and the refrigerant in the heating circuit is transferred to the cooling circuit. Move and adjust the amount of refrigerant in the heating circuit appropriately.
【0010】[0010]
【実施例】以下、本発明の一実施例を図1で説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
【0011】圧縮機1、流路切換弁2、室外送風機3を
有する室外熱交換器4、第1電磁弁5、キャピラリチュ
ーブ6、室内送風機7を有する室内熱交換器8、第2電
磁弁9、逆止弁10、アキュムレータ11を順次配管接
続して循環路を構成し、さらに第3電磁弁12、冷媒ポ
ンプ13、バーナ14を有する冷媒加熱器15を直列に
配管接続した直列配管回路をキャピラリチューブ6の下
流と第2電磁弁9の上流との間に接続した回路を構成し
作動媒体として冷媒を封入している。An outdoor heat exchanger 4 having a compressor 1, a flow path switching valve 2, an outdoor blower 3, a first solenoid valve 5, a capillary tube 6, an indoor heat exchanger 8 having an indoor blower 7, and a second solenoid valve 9. , A check valve 10 and an accumulator 11 are sequentially connected to form a circulation path, and a third solenoid valve 12, a refrigerant pump 13, and a refrigerant heater 15 having a burner 14 are connected in series to form a series piping circuit in a capillary. A circuit connected between the downstream side of the tube 6 and the upstream side of the second electromagnetic valve 9 is configured to contain a refrigerant as a working medium.
【0012】そして、16は冷媒加熱器15の壁面に設
けた過熱検知器で、17はこの冷媒加熱器15とガス冷
媒配管18と室内熱交換器8と液冷媒配管19と第3電
磁弁12と冷媒ポンプ13とを接続して環状の循環路に
した暖房回路である。20はバーナ14への燃料の供給
をする燃料供給装置、21は暖房回路17のガス冷媒配
管18に設けた冷媒圧力検知器、22は室内放熱器の室
内熱交換器8の空気吸い込み部に設けた流入空気側の温
度を検知する室温検知器である。23は圧縮機1、室外
熱交換器4、第1電磁弁5、キャピラリチューブ6、を
有する冷房回路である。Reference numeral 16 is an overheat detector provided on the wall surface of the refrigerant heater 15, and 17 is the refrigerant heater 15, the gas refrigerant pipe 18, the indoor heat exchanger 8, the liquid refrigerant pipe 19, and the third solenoid valve 12. Is a heating circuit in which the refrigerant pump 13 and the refrigerant pump 13 are connected to form an annular circulation path. Reference numeral 20 is a fuel supply device for supplying fuel to the burner 14, 21 is a refrigerant pressure detector provided in the gas refrigerant pipe 18 of the heating circuit 17, and 22 is an air intake portion of the indoor heat exchanger 8 of the indoor radiator. It is a room temperature detector that detects the temperature of the incoming air side. Reference numeral 23 is a cooling circuit including the compressor 1, the outdoor heat exchanger 4, the first electromagnetic valve 5, and the capillary tube 6.
【0013】24は液冷媒配管19に設けた液側サービ
スバルブ、25はガス冷媒配管18に設けたガス側サー
ビスバルブ、26は液冷媒配管19の室内熱交換器8側
に設けた液側継手、27はガス冷媒配管18の室内熱交
換器8側に設けたガス側継手であり、液側およびガス側
サービスバルブ24、25と液側およびガス側継手2
6、27の間が室外側と室内側の設置距離に応じて接続
冷媒配管の長さを任意に設定できる。Reference numeral 24 is a liquid side service valve provided in the liquid refrigerant pipe 19, 25 is a gas side service valve provided in the gas refrigerant pipe 18, and 26 is a liquid side joint provided on the indoor heat exchanger 8 side of the liquid refrigerant pipe 19. , 27 are gas side joints provided on the indoor heat exchanger 8 side of the gas refrigerant pipe 18, and the liquid side and gas side service valves 24, 25 and the liquid side and gas side joint 2
Between 6 and 27, the length of the connecting refrigerant pipe can be arbitrarily set according to the installation distance between the outdoor side and the indoor side.
【0014】29は室内送風機7の回転数検知器であ
り、29は過熱検知器16、第1電磁弁5、第2電磁弁
9、第3電磁弁12、燃料供給装置20、冷媒圧力検知
器21、室温検知器22、回転数検知器28、圧縮機1
に電気的に接続され、室温検知器22の温度が所定(例
えば20℃)温度以下でかつ冷媒圧力検知器21の圧力
が所定(例えば24kg/cm2)以上になる時は、第1電
磁弁5を一定時間(例えば 0.5秒)開弁する制御装
置である。冷房回路23と暖房回路17には、冷媒とし
てR−22を適正量より多く充填してある。Reference numeral 29 is a rotation speed detector of the indoor blower 7, and 29 is an overheat detector 16, a first solenoid valve 5, a second solenoid valve 9, a third solenoid valve 12, a fuel supply device 20, a refrigerant pressure detector. 21, room temperature detector 22, rotation speed detector 28, compressor 1
When the temperature of the room temperature detector 22 is equal to or lower than a predetermined temperature (for example, 20 ° C.) and the pressure of the refrigerant pressure detector 21 is equal to or higher than a predetermined temperature (for example, 24 kg / cm 2 ), the first solenoid valve is connected. 5 is a control device that opens the valve 5 for a fixed time (for example, 0.5 seconds). The cooling circuit 23 and the heating circuit 17 are filled with R-22 as a refrigerant in an amount larger than an appropriate amount.
【0015】また、暖房運転時は電磁弁5を閉じ、圧縮
機1の駆動により室外熱交換器4側の冷媒を全て冷媒加
熱器5側に移す汲み上げ運転の後に、冷媒加熱器15を
バーナ14で加熱することにより蒸発器として、室内熱
交換機8を凝縮器として、冷媒ポンプ13を冷媒搬送手
段として暖房サイクルを構成し、さらに冷房は圧縮機1
駆動による従来方式の冷房サイクルを構成している。Further, during the heating operation, the solenoid valve 5 is closed, and after the pumping operation in which all the refrigerant on the outdoor heat exchanger 4 side is moved to the refrigerant heater 5 side by driving the compressor 1, the refrigerant heater 15 is set on the burner 14. The heating cycle is configured by using the indoor heat exchanger 8 as a condenser, the refrigerant pump 13 as a refrigerant transfer means, and the cooling by heating the compressor 1
It constitutes a conventional cooling cycle by driving.
【0016】上記構成において、暖房は、冷媒加熱器1
5でバーナ14での燃焼熱により加熱された液冷媒がガ
ス相状態でガス冷媒配管18を通って室内熱交換器8に
流入し、室内送風機7の運転で室内に放熱し、この放熱
により冷媒は凝縮液化してさらに過冷却液となって、液
冷媒配管19、第3電磁弁12、冷媒ポンプ13を通り
冷媒加熱器15に液冷媒が供給される。In the above structure, the heating is performed by the refrigerant heater 1.
5, the liquid refrigerant heated by the heat of combustion in the burner 14 flows into the indoor heat exchanger 8 through the gas refrigerant pipe 18 in the gas phase state, and radiates heat indoors by the operation of the indoor blower 7. Is condensed and liquefied to become a supercooled liquid, and the liquid refrigerant is supplied to the refrigerant heater 15 through the liquid refrigerant pipe 19, the third solenoid valve 12, and the refrigerant pump 13.
【0017】充填冷媒量が適正量より多い場合、室内熱
交換気8内に液冷媒が増加しそのため、室内熱交換器1
2内の高温二相冷媒域が少なくなり、室内熱交換器12
の放熱能力が低下する。そのため、暖房回路全体の温度
が上昇し、かつ圧力が上昇する。このため、設計圧力を
保証するには、バーナ14による加熱量を小さくする
か、または、加熱を停止する必要がある。When the amount of the filled refrigerant is larger than the appropriate amount, the amount of the liquid refrigerant increases in the indoor heat exchange air 8. Therefore, the indoor heat exchanger 1
The high temperature two-phase refrigerant region in 2 is reduced, and the indoor heat exchanger 12
The heat dissipation capacity of Therefore, the temperature of the entire heating circuit rises and the pressure rises. Therefore, in order to guarantee the design pressure, it is necessary to reduce the heating amount by the burner 14 or stop the heating.
【0018】また、冷媒が設置時接続冷媒配管が長い場
合や運転中外部に漏れて、充填冷媒量が適正量より少な
くなった時、冷媒不足により冷媒加熱器15が過熱し、
過熱検知器16により動作を停止する。Further, when the refrigerant has a long connection refrigerant pipe at the time of installation or leaks to the outside during operation and the amount of the filled refrigerant becomes less than an appropriate amount, the refrigerant heater 15 is overheated due to insufficient refrigerant,
The operation is stopped by the overheat detector 16.
【0019】そこで、冷媒充填量を適正量より多くし、
室温が低く室内熱交換器8の放熱能力がバーナ14によ
る加熱量に対して十分に能力がある時暖房回路17の冷
媒の圧力を検知して、この圧力が適正値以下になるまで
冷媒を暖房回路17から冷房回路23に移し、暖房回路
17の冷媒量を適正に保つことにより、暖房回路17全
体の圧力の上昇を一定(30kg/cm2)以下に保ちなが
ら室内放熱器8の十分な放熱能力が得られる。Therefore, the refrigerant charging amount is made larger than an appropriate amount,
When the room temperature is low and the heat radiation capacity of the indoor heat exchanger 8 is sufficient for the amount of heating by the burner 14, the pressure of the refrigerant in the heating circuit 17 is detected, and the refrigerant is heated until this pressure becomes an appropriate value or less. By moving from the circuit 17 to the cooling circuit 23 and keeping the amount of refrigerant in the heating circuit 17 appropriate, sufficient heat dissipation of the indoor radiator 8 can be achieved while keeping the pressure rise of the entire heating circuit 17 below a certain level (30 kg / cm 2 ). Ability is obtained.
【0020】図2は暖房回路中に冷媒量が適正量より多
いため、室温検知器28の温度20℃以下で冷媒圧力検
知器21の圧力が25kg/cm2G以上になり、この時、第
1電磁弁5を一定時間(例えば 0.5秒)開弁を繰り
返す燃焼開始時の冷媒挙動制御を示す一例である。In FIG. 2, since the amount of refrigerant in the heating circuit is larger than the proper amount, the pressure of the refrigerant pressure detector 21 becomes 25 kg / cm 2 G or more when the temperature of the room temperature detector 28 is 20 ° C. or less. 1 is an example showing refrigerant behavior control at the start of combustion in which one solenoid valve 5 is repeatedly opened for a certain period of time (for example, 0.5 seconds).
【0021】図2において、まず第1電磁弁5を閉止し
て圧縮機1を運転し冷房回路23側の冷媒を暖房回路1
7側に回収するポンプダウン運転を行なって、冷媒を全
て暖房回路に移す。その後、燃料を燃料供給装置20に
よりバーナ14へ供給し、冷媒加熱器15を燃焼熱で加
熱する。この加熱された熱量により、暖房回路17全体
の温度と冷媒圧力が上昇しながら室内熱交換器8から室
内に放熱する。このため、冷媒の圧力である冷媒圧力検
知器21と室温検知器27は上昇増加曲線を描く。In FIG. 2, first, the first electromagnetic valve 5 is closed and the compressor 1 is operated so that the refrigerant on the cooling circuit 23 side is cooled by the heating circuit 1.
The pump down operation for collecting to the 7 side is performed, and all the refrigerant is transferred to the heating circuit. After that, the fuel is supplied to the burner 14 by the fuel supply device 20, and the refrigerant heater 15 is heated by the combustion heat. Due to the amount of heat thus heated, the temperature of the entire heating circuit 17 and the refrigerant pressure rise, and heat is radiated indoors from the indoor heat exchanger 8. Therefore, the refrigerant pressure detector 21, which is the pressure of the refrigerant, and the room temperature detector 27 draw a rising increase curve.
【0022】そこで、室温検知器28が20℃以下であ
る時、冷媒圧力検知器21の圧力が25kg/cm2Gとなる
と第1電磁弁5を0.5 秒間開いた後閉じる。これに
より、暖房回路17の冷媒量は少なくなり、室内熱交換
器8内の液冷媒が減り放熱能力が増大する。このため、
暖房回路17の圧力も低下する。この後、加熱と室温の
上昇により再び冷媒圧力検知器21と室温検知器20の
値は上昇増加し、前記動作を繰り返す事により暖房回路
17の冷媒は適正量となり、圧力が異常に上昇すること
がなく最大の放熱を行える。室内の温度がある程度上昇
すると(20℃)以後は冷媒圧力検知器21の温度がこ
れ以上上昇しない様にバーナ14の燃焼量を燃料供給装
置20により減少あるいは停止させ、加熱量をコントロ
ールする。Therefore, when the temperature of the room temperature detector 28 is 20 ° C. or lower and the pressure of the refrigerant pressure detector 21 becomes 25 kg / cm 2 G, the first solenoid valve 5 is opened for 0.5 seconds and then closed. As a result, the amount of refrigerant in the heating circuit 17 decreases, the amount of liquid refrigerant in the indoor heat exchanger 8 decreases, and the heat radiation capacity increases. For this reason,
The pressure in the heating circuit 17 also drops. After that, the values of the refrigerant pressure detector 21 and the room temperature detector 20 rise and increase again due to heating and room temperature rise, and by repeating the above operation, the refrigerant in the heating circuit 17 reaches an appropriate amount and the pressure rises abnormally. There is no maximum heat dissipation. After the room temperature rises to some extent (20 ° C.), the combustion amount of the burner 14 is reduced or stopped by the fuel supply device 20 so that the temperature of the refrigerant pressure detector 21 does not rise any more, and the heating amount is controlled.
【0023】また、室内熱交換器8の放熱能力は、室内
温度と、冷媒の温度と、室内送風器7による風量により
変化する。そこで、この風量を検知する手段を設けるこ
とにより更に高精度に適正冷媒量が設定できる。本実施
例では、風量検知手段としては、室内送風機7の回転数
検知器28を設けてあるが、別の例としては、室内送風
機7の印加電圧、あるいは室内熱交換器8の途中に温度
検知器を設けこの値と室温検知器22と冷媒圧力検知器
21の値から計算してもよい。この回転数検知器28に
よる風量が小さくなる時は、冷媒圧力検知器21の圧力
が所定値以上になり第1電磁弁5を一定時間0.5秒開
弁してこの所定値25kg/cm2Gを低く、する。たとえ
ば大風量は25kg/cm2G、中風量は21kg/cm2G、小
風量は19kg/cm2G、とする。これにより、暖房運転
中、暖房回路17には常に最適の冷媒量となり、風量を
小から大に大きく変化させた時もポンプダウン運転を行
うことなく正常に動作できる。Further, the heat radiation capacity of the indoor heat exchanger 8 changes depending on the indoor temperature, the temperature of the refrigerant, and the air volume of the indoor blower 7. Therefore, by providing a means for detecting this air volume, the proper refrigerant volume can be set with higher accuracy. In the present embodiment, the rotation speed detector 28 of the indoor blower 7 is provided as the air volume detecting means, but as another example, the voltage applied to the indoor blower 7 or the temperature detection in the middle of the indoor heat exchanger 8 is performed. It is also possible to provide a device and calculate from this value and the values of the room temperature detector 22 and the refrigerant pressure detector 21. When the air volume by the rotation speed detector 28 becomes small, the pressure of the refrigerant pressure detector 21 becomes equal to or higher than a predetermined value, and the first solenoid valve 5 is opened for 0.5 seconds for a predetermined time to reach the predetermined value 25 kg / cm 2. Lower G. For example air volume is 25kg / cm 2 G, paralytic weight 21kg / cm 2 G, Shokazeryou is 19kg / cm 2 G, to. As a result, during the heating operation, the amount of the refrigerant is always optimum for the heating circuit 17, and even when the air volume is changed from the small amount to the large amount, the normal operation can be performed without performing the pump down operation.
【0024】以上のように冷媒充填量が適正量より多く
注入しても、暖房運転を正常に行えるため、空気調和機
に充填する冷媒量はより多く充填でき、機器から冷媒が
少しくらい漏れても正常に運転し耐久性、信頼性が向上
する。また、多少注入冷媒量がばらついても同様に正常
運転するため、冷媒充填時の作業性、設置時の施工性が
良く、設置時、室外側と室内側の設置距離に応じた接続
冷媒配管の長さを任意に設定した場合も充填冷媒量を変
化する事なく正常運転を行う。As described above, the heating operation can be normally performed even if the refrigerant charging amount is injected more than the proper amount, so that the air conditioner can be charged with a larger amount of the refrigerant, and the refrigerant slightly leaks from the device. Also operates normally and durability and reliability are improved. Also, even if the injected refrigerant amount varies somewhat, it operates normally as well, so workability at the time of refrigerant filling, workability at installation is good, and at the time of installation, the connection refrigerant pipe according to the installation distance between the outdoor side and the indoor side is installed. Even if the length is set arbitrarily, normal operation is performed without changing the amount of the filled refrigerant.
【0025】なお、冷房は流路切換弁2を図1破線方向
に切換え第1電磁弁5と第2電磁弁9の開弁と第3電磁
弁12を閉弁し、圧縮機1と室内送風機7および室外送
風機2の運転により、従来方式の圧縮機駆動の冷房を行
なう。For cooling, the flow path switching valve 2 is switched in the direction of the broken line in FIG. 1, the first solenoid valve 5 and the second solenoid valve 9 are opened, and the third solenoid valve 12 is closed, so that the compressor 1 and the indoor blower are closed. By operating 7 and the outdoor blower 2, the conventional compressor-driven cooling is performed.
【0026】[0026]
【発明の効果】以上のように本発明の空気調和機は、冷
媒加熱器と、熱搬送部と、室内熱交換器とを順次配管接
続した暖房回路と、一端は流路切換弁を介し他端は開閉
弁を介して前記暖房回路に付加接続した室外熱交換器と
圧縮機を有する冷房回路と、前記暖房回路に設けた冷媒
圧力検知手段と、前記室内放熱器の空気吸い込み部に設
けた温度検知手段と、この温度検知手段の温度が所定の
温度以下でかつ前記冷媒圧力検知手段の圧力が所定以上
になる時は、前記開閉弁を一定時間開弁する制御装置と
を設けた構成により、冷媒充填量を適正量より多くし、
温度検知手段に応じて冷媒を暖房回路から冷房回路に移
動させ、暖房回路の冷媒量を常に適正に保つことがで
き、十分な放熱能力が得られ、正常な安定冷媒加熱運転
を実現できる。As described above, the air conditioner of the present invention has a heating circuit in which a refrigerant heater, a heat transfer section, and an indoor heat exchanger are sequentially connected by piping, and one end is connected via a flow path switching valve to another. The end is provided in the cooling circuit having the outdoor heat exchanger and the compressor additionally connected to the heating circuit via the on-off valve, the refrigerant pressure detection means provided in the heating circuit, and the air suction section of the indoor radiator. According to a configuration provided with a temperature detecting means and a control device for opening the opening / closing valve for a certain period of time when the temperature of the temperature detecting means is equal to or lower than a predetermined temperature and the pressure of the refrigerant pressure detecting means is equal to or higher than a predetermined temperature. , Increase the refrigerant charge more than the proper amount,
The refrigerant can be moved from the heating circuit to the cooling circuit in accordance with the temperature detecting means, the amount of the refrigerant in the heating circuit can be always kept appropriate, sufficient heat dissipation capacity can be obtained, and normal stable refrigerant heating operation can be realized.
【0027】また、室内送風機の風量を検知する手段を
設けることにより更に高精度に適正冷媒量が設定でき、
風量を小から大に大きく変化させた時もポンプダウン運
転を行うことなく正常に動作できる。そして、冷媒充填
量が適正量より多く注入しても、暖房運転を正常に行え
るため、回路から冷媒が漏れても正常に運転し耐久性、
信頼性が向上する。また、多少注入冷媒量がばらついて
も同様に正常運転するため作業性、施工性が良い。Further, by providing means for detecting the air volume of the indoor blower, the proper refrigerant volume can be set with higher accuracy,
Even when the air volume is changed from small to large, it can operate normally without pump down operation. And, even if the refrigerant charging amount is injected more than an appropriate amount, since the heating operation can be normally performed, the refrigerant operates normally even if the refrigerant leaks, and durability,
Improves reliability. Further, even if the amount of injected refrigerant varies to some extent, the workability and workability are good because the same normal operation is performed.
【図1】本発明の一実施例の空気調和機のシステム構成
図FIG. 1 is a system configuration diagram of an air conditioner according to an embodiment of the present invention.
【図2】本発明の実施例の冷媒挙動制御動作図FIG. 2 is a refrigerant behavior control operation diagram of the embodiment of the present invention.
【図3】従来の空気調和機のシステム構成図FIG. 3 is a system configuration diagram of a conventional air conditioner
1 圧縮機 2 流路切換弁 4 室外熱交換器 5 第1電磁弁 8 室内熱交換器 13 冷媒ポンプ 15 冷媒加熱器 17 暖房回路 21 冷媒圧力検知器 22 室温検知器 23 冷房回路 28 回転数検知器 29 制御装置 DESCRIPTION OF SYMBOLS 1 Compressor 2 Flow path switching valve 4 Outdoor heat exchanger 5 1st solenoid valve 8 Indoor heat exchanger 13 Refrigerant pump 15 Refrigerant heater 17 Heating circuit 21 Refrigerant pressure detector 22 Room temperature detector 23 Cooling circuit 28 Rotation speed detector 29 Control device
Claims (3)
とを順次配管接続した暖房回路と、一端は流路切換弁を
介し他端は開閉弁を介して前記暖房回路に付加接続した
室外熱交換器と圧縮機を有する冷房回路と、前記暖房回
路に設けた冷媒圧力検知手段と、前記室内放熱器の空気
吸い込み部に設けた温度検知手段と、この温度検知手段
の温度が所定の温度以下でかつ前記冷媒圧力検知手段の
圧力が所定以上になる時は、前記開閉弁を一定時間開弁
する制御装置とを設けた空気調和機。1. A heating circuit in which a refrigerant heater, a heat transfer section, and an indoor heat exchanger are sequentially connected by piping, and one end is connected to the heating circuit via a flow path switching valve and the other end is connected via an opening / closing valve. A cooling circuit having an outdoor heat exchanger and a compressor connected to each other, a refrigerant pressure detecting means provided in the heating circuit, a temperature detecting means provided in an air suction portion of the indoor radiator, and a temperature of the temperature detecting means are An air conditioner provided with a control device that opens the on-off valve for a certain period of time when the temperature of the refrigerant is below a predetermined temperature and the pressure of the refrigerant pressure detecting means is above a predetermined temperature.
の時は、前記開閉弁を一定時間開弁することを繰り返す
請求項1記載の空気調和機。2. The air conditioner according to claim 1, wherein when the pressure of the refrigerant pressure detecting means is equal to or higher than a predetermined pressure, the opening / closing valve is repeatedly opened for a certain period of time.
室内送風機に風量検知手段を設け、風量が小さく、前記
冷媒圧力検知手段の圧力が所定以上になる時は前記開閉
弁を一定時間開弁する前記所定値を小さくした請求項1
記載の空気調和機。3. An indoor blower provided in an indoor heat exchanger, and an air flow rate detection means provided in the indoor blower, and when the air flow rate is small and the pressure of the refrigerant pressure detection means exceeds a predetermined value, the opening / closing valve is kept for a predetermined time. The said predetermined value which opens a valve is made small.
Air conditioner described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2231593A JPH06235556A (en) | 1993-02-10 | 1993-02-10 | Air conditioner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2231593A JPH06235556A (en) | 1993-02-10 | 1993-02-10 | Air conditioner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06235556A true JPH06235556A (en) | 1994-08-23 |
Family
ID=12079303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2231593A Pending JPH06235556A (en) | 1993-02-10 | 1993-02-10 | Air conditioner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06235556A (en) |
-
1993
- 1993-02-10 JP JP2231593A patent/JPH06235556A/en active Pending
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