JP2009042886A - Vending machine - Google Patents

Vending machine Download PDF

Info

Publication number
JP2009042886A
JP2009042886A JP2007205307A JP2007205307A JP2009042886A JP 2009042886 A JP2009042886 A JP 2009042886A JP 2007205307 A JP2007205307 A JP 2007205307A JP 2007205307 A JP2007205307 A JP 2007205307A JP 2009042886 A JP2009042886 A JP 2009042886A
Authority
JP
Japan
Prior art keywords
heat exchanger
cooling
indoor heat
refrigerant
condenser
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.)
Granted
Application number
JP2007205307A
Other languages
Japanese (ja)
Other versions
JP5157307B2 (en
Inventor
Toshikazu Sakai
寿和 境
Tatsuya Seo
達也 瀬尾
Takahiro Inoue
隆宏 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to JP2007205307A priority Critical patent/JP5157307B2/en
Publication of JP2009042886A publication Critical patent/JP2009042886A/en
Application granted granted Critical
Publication of JP5157307B2 publication Critical patent/JP5157307B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vending machine equipped with a heating system for heating two or more storage chambers by a plurality of indoor heat exchangers by using exhaust heat or the heat of open air to be generated by cooling, in which when cooling the storage chambers having at least one indoor heat exchanger arranged therein while operating the heating system to heat the storage chambers, it is possible to prevent any cooling medium from staying in the indoor heat exchanger for heating, which is not used for cooling, and thus, a sharp decrease in heating efficiency can be prevented. <P>SOLUTION: This vending machine is provided with a cooling system and a heating system, and an expansion mechanism 51 for heating and a check valve 52 and an expansion mechanism 53 for heating and a check valve 54 are serially connected to the downstream sides of indoor heat exchangers 29 and 33 of the heating system connected in parallel. Thus, it is possible to prevent any cooling medium from continuously staying in the indoor heat exchanger 33 by the check valve 54 while heating the indoor heat exchanger 29 in one storage chamber even when the capacity of the indoor heat exchanger 33 which is not used while cooling the other storage chamber is relatively larger than filled cooling medium quantity. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、缶飲料などの商品を加温または冷却して販売する自動販売機において、圧縮機で圧縮された冷媒が凝縮する際に生じる潜熱を利用して冷却および加温を行う冷却加温システムを有した自動販売機に関するものである。   The present invention relates to a cooling and heating system that uses a latent heat generated when a refrigerant compressed by a compressor condenses in a vending machine that sells products such as canned beverages that are heated or cooled. The present invention relates to a vending machine having a system.

近年、自動販売機に対する消費電力量削減の要求が高まってきており、消費電力量削減手段として、冷却によって生じる廃熱あるいは外気の熱を利用して商品が保管された貯蔵室を加温するものが提案されている(例えば、特許文献1参照)。   In recent years, demands for reducing power consumption in vending machines have increased, and as a means for reducing power consumption, heating storage rooms that store products using waste heat generated by cooling or heat from the outside air Has been proposed (see, for example, Patent Document 1).

以下、図面を参照しながら従来の自動販売機を説明する。   Hereinafter, a conventional vending machine will be described with reference to the drawings.

図5は従来の自動販売機の冷媒回路図である。   FIG. 5 is a refrigerant circuit diagram of a conventional vending machine.

図5に示すように、従来の自動販売機は、商品を保管する貯蔵室1,2,3を備えるとともに、図面に向かって貯蔵室1、2、3は具体的には、右室1、中室2、左室3を構成し、右室1内には室内熱交換器4、中室2内には室内熱交換器5と蒸発器6が別々のパス配管で形成され、左室3内には蒸発器7が配置されている。   As shown in FIG. 5, the conventional vending machine includes storage chambers 1, 2, 3 for storing commodities, and the storage chambers 1, 2, 3 are specifically a right chamber 1, The middle chamber 2 and the left chamber 3 are configured, and an indoor heat exchanger 4 is formed in the right chamber 1, and an indoor heat exchanger 5 and an evaporator 6 are formed in the middle chamber 2 by separate path pipes. An evaporator 7 is arranged inside.

また貯蔵室1〜3の下方には機械室が構成され、内部には室内熱交換器4、5と接続される圧縮機8と、蒸発器6、7と接続される圧縮機9が備えられている。そして右室1および中室2を冷却または加温する冷却加温システムは圧縮機8、四方切替弁10、室外熱交換器11、右室1の冷却時の右室膨張弁12、中室2の冷却時の中室膨張弁13、右室1への冷媒の流路を開閉する右室電磁弁14、中室2への冷媒の流路を開閉する中室電磁弁15、そして室内熱交換器4、5が図5のように接続されている。   A machine room is formed below the storage rooms 1 to 3, and a compressor 8 connected to the indoor heat exchangers 4 and 5 and a compressor 9 connected to the evaporators 6 and 7 are provided inside. ing. The cooling and heating system for cooling or heating the right chamber 1 and the middle chamber 2 includes the compressor 8, the four-way switching valve 10, the outdoor heat exchanger 11, the right chamber expansion valve 12 when the right chamber 1 is cooled, and the middle chamber 2. The middle chamber expansion valve 13 during cooling, the right chamber solenoid valve 14 for opening and closing the refrigerant flow path to the right chamber 1, the middle chamber solenoid valve 15 for opening and closing the refrigerant flow path to the middle chamber 2, and the indoor heat exchange Devices 4 and 5 are connected as shown in FIG.

また中室2および左室3を冷却する冷却システムは、圧縮機9、凝縮器16、中室2の冷却時の中室膨張弁17、蒸発器6、左室3の冷却時の左室膨張弁18、蒸発器7を図5のように接続されている。そして凝縮器16と室外熱交換器11はフィンを共有した一体型熱交換器として形成されている。また左室3は冷却専用室であり、蒸発器7で冷却される。   The cooling system for cooling the middle chamber 2 and the left chamber 3 includes a compressor 9, a condenser 16, a middle chamber expansion valve 17 when the middle chamber 2 is cooled, an evaporator 6, and a left chamber expansion when the left chamber 3 is cooled. The valve 18 and the evaporator 7 are connected as shown in FIG. The condenser 16 and the outdoor heat exchanger 11 are formed as an integrated heat exchanger sharing fins. The left chamber 3 is a cooling-only chamber and is cooled by the evaporator 7.

ここで、貯蔵室1、2は冷却と加温の切り換えが可能であり、貯蔵室1、2を冷却する場合は四方切替弁10を切替えて、冷媒は圧縮機8、室外熱交換器11を通って並列に接続された右室膨張弁12と中室膨張弁13とで減圧されて、蒸発器として作用する室内熱交換器4、5によって冷却され約3℃の冷蔵温度に保ち、加温する場合は四方切替弁10を切替えて、冷媒は圧縮機8、並列に接続された右室電磁弁14と中室電磁弁15を通って凝縮器として作用する室内熱交換器4、5によって加温され約54℃の高温に保つ。   Here, the storage chambers 1 and 2 can be switched between cooling and heating. When the storage chambers 1 and 2 are cooled, the four-way switching valve 10 is switched, and the refrigerant passes through the compressor 8 and the outdoor heat exchanger 11. The pressure is reduced by the right chamber expansion valve 12 and the middle chamber expansion valve 13 connected in parallel, cooled by the indoor heat exchangers 4 and 5 acting as an evaporator, maintained at a refrigeration temperature of about 3 ° C., and heated. In this case, the four-way switching valve 10 is switched, and the refrigerant passes through the compressor 8, the right chamber solenoid valve 14 and the middle chamber solenoid valve 15 connected in parallel, and is added by the indoor heat exchangers 4 and 5 acting as a condenser. Keep at a high temperature of about 54 ° C.

貯蔵室3は冷却専用であり、冷却システムによって約3℃の冷蔵温度に保つ。   The storage chamber 3 is dedicated to cooling and is kept at a refrigeration temperature of about 3 ° C. by a cooling system.

以上のように構成された従来の自動販売機について、以下その動作を説明する。   The operation of the conventional vending machine configured as described above will be described below.

全ての貯蔵室1〜3を冷却する場合、中室2は冷却加温システムと冷却システムの両方のシステムによって冷却される。   When all the storage chambers 1 to 3 are cooled, the middle chamber 2 is cooled by both the cooling and heating system and the cooling system.

次に、右室1を加温しながら中室2と左室3を冷却する場合、中室電磁弁15を閉じて室内熱交換器5へ冷媒が流れるのを遮断し、右室電磁弁14を開放して室内熱交換器4へ冷媒が流れるように冷却加温システムの冷媒回路を形成する。   Next, when the middle chamber 2 and the left chamber 3 are cooled while the right chamber 1 is heated, the middle chamber solenoid valve 15 is closed to block the refrigerant from flowing to the indoor heat exchanger 5, and the right chamber solenoid valve 14. And the refrigerant circuit of the cooling and heating system is formed so that the refrigerant flows into the indoor heat exchanger 4.

これによって、右室1は凝縮器として作用する室内熱交換器4によって加温され、中室2は冷却システムの蒸発器6によって、左室3は蒸発器7によって冷却される。   As a result, the right chamber 1 is heated by the indoor heat exchanger 4 acting as a condenser, the middle chamber 2 is cooled by the evaporator 6 of the cooling system, and the left chamber 3 is cooled by the evaporator 7.

このように、冷却加温システムを備えた自動販売機においては右室1および中室2を加温する際に、庫外熱交換器11を用いて凝縮器16で発生する冷却システムの排熱と外気の熱を吸熱することで右室1と中室2を効率よく加温することができるので、電気ヒータなどの別の加熱手段を用いて貯蔵室を加温する場合に比べて、消費電力量を削減することができる。
特開2007−102680号公報
Thus, in the vending machine equipped with the cooling and heating system, when the right chamber 1 and the middle chamber 2 are heated, the exhaust heat of the cooling system generated by the condenser 16 using the external heat exchanger 11 is used. Since the right chamber 1 and the middle chamber 2 can be efficiently heated by absorbing the heat of the outside air, it is consumed as compared with the case where the storage chamber is heated using another heating means such as an electric heater. The amount of power can be reduced.
JP 2007-102680 A

しかしながら、上記従来の構成では、右室1を加温し、中室2と左室3を冷却する場合、中室2に備えた室内熱交換器5には冷媒が流れないように電磁弁15を閉じて不使用熱交換器としているが、このまま長時間運転していると閉塞中の電磁弁15から冷媒が漏れて冷却時に使用しない加温用の室内熱交換器5内に冷媒が滞留して、右室1の室内熱交換器4に必要な冷媒が不足し、右室1を適温に加温できないという問題が発生する。   However, in the conventional configuration, when the right chamber 1 is heated and the middle chamber 2 and the left chamber 3 are cooled, the solenoid valve 15 prevents the refrigerant from flowing into the indoor heat exchanger 5 provided in the middle chamber 2. However, if the operation is continued for a long time, the refrigerant leaks from the closed solenoid valve 15, and the refrigerant stays in the indoor heat exchanger 5 for heating that is not used during cooling. As a result, the refrigerant required for the indoor heat exchanger 4 in the right chamber 1 is insufficient and the right chamber 1 cannot be heated to an appropriate temperature.

また、中室2はコールド室として蒸発器6によって冷却されているため、同じ空間に配置されている不使用の室内熱交換器5は蒸発器6と同じくらい若しくは冷却時の庫内温度約3℃程度まで冷却されているため、室内熱交換器5は膨張機構13後に低圧配管となって圧縮機8に連結されていても、室外熱交換器11は凝縮器16で発生する冷却システムの排熱と外気の熱を吸熱しているので約5〜10℃程度になっており、吸入圧力が庫内圧力より低くならない場合があり、室内熱交換器5内に滞留する冷媒を回収することができない。   Further, since the middle chamber 2 is cooled as a cold chamber by the evaporator 6, the unused indoor heat exchanger 5 disposed in the same space has the same temperature as that of the evaporator 6 or the internal temperature at the time of cooling of about 3 Since the indoor heat exchanger 5 is connected to the compressor 8 as a low-pressure pipe after the expansion mechanism 13 because it is cooled to about 0 ° C., the outdoor heat exchanger 11 is discharged from the cooling system generated by the condenser 16. Since the heat and the heat of the outside air are absorbed, the temperature is about 5 to 10 ° C., the suction pressure may not be lower than the internal pressure, and the refrigerant staying in the indoor heat exchanger 5 can be recovered. Can not.

本発明は、従来の課題を解決するもので、冷却中の室内に設置され、冷却時に使用しない加温用の室内熱交換器内に冷媒が滞留することを防ぐことで、加温効率の著しい低下を防止する自動販売機を提供することを目的とする。   The present invention solves the conventional problem, and is installed in a cooling room and prevents the refrigerant from staying in a heating indoor heat exchanger that is not used during cooling, so that the heating efficiency is remarkable. It aims at providing the vending machine which prevents a fall.

上記従来の課題を解決するために、本発明の自動販売機は、冷却システムに対して独立するとともに、加温用膨張機構と逆止弁を介して室内熱交換器を低圧側に接続する低圧配管とを備えた加温システムを有するものである。   In order to solve the above-described conventional problems, the vending machine of the present invention is independent of the cooling system and has a low pressure that connects the indoor heat exchanger to the low pressure side via a heating expansion mechanism and a check valve. And a heating system provided with piping.

これによって、冷却または加温可能な収納室で、冷却中の収納室内に設置され、冷却に使用しない加温用の室内熱交換器内に冷媒が滞留し続けることを防ぐことで、別の冷却または加温可能な収納室の加温時の加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止することができる。   As a result, the storage room can be cooled or heated, installed in the cooling room, and kept in the indoor heat exchanger for heating that is not used for cooling. Alternatively, it is possible to secure a sufficient amount of refrigerant for operating the heating system at the time of heating of the storage chamber that can be heated, and to prevent a significant decrease in heating efficiency.

また、上記従来の課題を解決するために、本発明の自動販売機は、加温システムに対して独立するとともに、収納室内に設置された蒸発器と、収納室外に設置された凝縮器と、収納室内に設置された第二の凝縮器と、第二の凝縮器に接続された高低圧バランス弁と、高低圧バランス弁を介して第二の凝縮器を低圧側に接続する低圧配管とを備えた冷却システムを有するものである。   In order to solve the above-described conventional problems, the vending machine of the present invention is independent of the heating system, and has an evaporator installed in the storage room, a condenser installed outside the storage room, A second condenser installed in the storage chamber, a high-low pressure balance valve connected to the second condenser, and a low-pressure pipe connecting the second condenser to the low-pressure side via the high-low pressure balance valve. It has a cooling system equipped.

これによって、加温システムを稼動するために必要な冷媒量を確保して加温システムの著しい効率低下を防止することができるとともに、冷却システムの第二の凝縮器を用いて加温することで加温効率の著しい低下を防止することができる。   As a result, the amount of refrigerant necessary for operating the heating system can be secured to prevent a significant decrease in efficiency of the heating system, and heating can be performed using the second condenser of the cooling system. A significant decrease in heating efficiency can be prevented.

本発明の自動販売機は、冷却中の収納室内に設置され、冷却に使用しない加温用の室内熱交換器内に冷媒が滞留することを防ぐことで加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止し、ヒートポンプシステムによる複数室の加温および冷却を適温に行うことができ、電気ヒータなどの別の加熱手段を用いて収納室を加温するのに比べて、消費電力量を削減することができる。   The vending machine of the present invention is installed in a storage room that is being cooled, and is necessary for operating a heating system by preventing refrigerant from remaining in a heating indoor heat exchanger that is not used for cooling. The amount of refrigerant can be secured to prevent a significant decrease in heating efficiency, and multiple chambers can be heated and cooled at an appropriate temperature by the heat pump system, and the storage chamber can be heated using another heating means such as an electric heater. It is possible to reduce the amount of power consumption as compared with the case of doing so.

また可燃性冷媒の場合、室内熱交換器内の滞留を低減できるので必要冷媒量を最小限に設定でき、可燃性冷媒の少冷媒化を実現でき、安全性を確保できる。   In the case of a flammable refrigerant, stagnation in the indoor heat exchanger can be reduced, so that the required amount of refrigerant can be set to a minimum, the amount of flammable refrigerant can be reduced, and safety can be ensured.

請求項1に記載の発明は、上部に商品を収納する複数の収納室、下部に機械室を有し、前記収納室内の下方に冷却システムの蒸発器、加温システムの室内熱交換器を配置し、前記機械室内に前記蒸発器に接続する凝縮器および圧縮機と、前記室内熱交換器に接続する室外熱交換器および圧縮機とを備え、前記冷却システムと前記加温システムとを独立して備えた自動販売機において、前記加温システムは複数の前記収納室にそれぞれ第1室内熱交換器と第2室内熱交換器を分岐配管して配置され、第1収納室内に少なくとも前記第1室内熱交換器を配置し、第2収納室内に冷却システムの蒸発器と前記第2室内熱交換器とを配置し、前記第1収納室は前記加温システムの圧縮機駆動で前記第1室内熱交換器によって加温され、前記第2収納室は前記冷却システムの圧縮機駆動で前記蒸発器によって冷却し、前記第2収納室を冷却運転している期間中に、使用しない前記第2室内熱交換器内に冷媒が滞留しないように、前記第2室内熱交換器の下流側に逆止弁を接続して前記加温システムを構成したことにより、冷却中の収納室内に設置された冷却に使用しない加温用の室内熱交換器の内容積が封入冷媒量に対して相対的に大きい場合でも当該室内熱交換器内に冷媒が滞留し続けることを防ぐことで、加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止することができる。   The invention according to claim 1 has a plurality of storage chambers for storing commodities in the upper part, a machine room in the lower part, and an evaporator of the cooling system and an indoor heat exchanger of the heating system are arranged below the storage room. A condenser and a compressor connected to the evaporator and an outdoor heat exchanger and a compressor connected to the indoor heat exchanger, the cooling system and the heating system being independent of each other. In the vending machine provided, the heating system is arranged by branching a first indoor heat exchanger and a second indoor heat exchanger in each of the plurality of storage chambers, and at least the first chamber is disposed in the first storage chamber. An indoor heat exchanger is disposed, an evaporator of a cooling system and the second indoor heat exchanger are disposed in a second storage chamber, and the first storage chamber is driven by a compressor of the heating system and is driven by the compressor of the heating system. Heated by a heat exchanger, the second storage chamber In order to prevent the refrigerant from staying in the second indoor heat exchanger that is not used during the cooling operation of the second storage chamber by the evaporator driven by the compressor drive of the cooling system. 2 The internal volume of the indoor heat exchanger for heating that is not used for cooling installed in the storage room being cooled by connecting the check valve downstream of the indoor heat exchanger and configuring the heating system Even if the amount of refrigerant is relatively large relative to the amount of enclosed refrigerant, the amount of refrigerant necessary to operate the heating system is ensured by preventing the refrigerant from staying in the indoor heat exchanger, and the heating efficiency Can be prevented from significantly decreasing.

請求項2に記載の発明は、請求項1に記載の発明にさらに、逆止弁に高低圧バランス弁を並列接続し、前記高低圧バランス弁を開放することで室内熱交換器に滞留した冷媒を加温システムの圧縮機に回収することにより、冷却中の収納室内に設置された冷却に使用しない室内熱交換器の温度が下がる前に当該室内熱交換器内に滞留した冷媒を回収することで、特に商品の入れ替えにより負荷が増大する運転モードの切換直後に加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止することができる。   The invention according to claim 2 is the refrigerant which stays in the indoor heat exchanger by connecting the high and low pressure balance valve in parallel to the check valve and opening the high and low pressure balance valve in addition to the invention according to claim 1. By collecting the refrigerant in the heating system compressor, the refrigerant staying in the indoor heat exchanger is recovered before the temperature of the indoor heat exchanger not used for cooling installed in the storage room being cooled falls. In particular, the amount of refrigerant necessary for operating the heating system immediately after switching of the operation mode in which the load increases due to the replacement of commodities can be secured to prevent a significant decrease in heating efficiency.

請求項3に記載の発明は、請求項1または2に記載の発明において、加温システムの圧縮機の回転数を高めることで、前記加温システムの室外熱交換器の温度を、使用しない第2室内熱交換器の温度よりも低い蒸発温度に保つことにより、冷却中の収納室内に設置された冷却に使用しない加温用の室内熱交換器内の冷媒を必要に応じて回収することで、特に商品追加などに対応して加温能力を増大する際に加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止することができる。   The invention according to claim 3 is the invention according to claim 1 or 2, wherein the temperature of the outdoor heat exchanger of the heating system is not used by increasing the rotation speed of the compressor of the heating system. (2) By keeping the evaporation temperature lower than the temperature of the indoor heat exchanger, the refrigerant in the indoor heat exchanger for heating that is not used for cooling installed in the cooling storage room can be recovered as necessary. In particular, it is possible to secure a sufficient amount of refrigerant for operating the heating system when increasing the heating capacity in response to the addition of products and the like, thereby preventing a significant decrease in heating efficiency.

請求項4に記載の発明は、請求項1または2に記載の発明において、加温用膨張機構を絞って、加温システムの室外熱交換器の温度を、使用しない第2室内熱交換器の温度よりも低い蒸発温度に保つことにより、必要に応じて冷却中の収納室内に設置された冷却に使用しない加温用の室内熱交換器内の冷媒を回収することで、特に外気温の低下に対応して加温能力を増大する際に加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止することができる。   According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the temperature of the outdoor heat exchanger of the warming system is set to be the same as that of the second indoor heat exchanger that is not used by restricting the warming expansion mechanism. By keeping the evaporation temperature lower than the temperature, it is possible to recover the refrigerant in the indoor heat exchanger for heating that is not used for cooling installed in the cooling storage room, if necessary. When the heating capacity is increased correspondingly, the amount of refrigerant necessary for operating the heating system can be secured to prevent a significant decrease in heating efficiency.

請求項5に記載の発明は、上部に商品を収納する複数の収納室、下部に機械室を有し、前記収納室内の下方に冷却システムの蒸発器、冷却加温システムの室内熱交換器を配置し、前記機械室内に前記蒸発器に接続する凝縮器および圧縮機と、前記室内熱交換器に接続する室外熱交換器および圧縮機とを有し、前記冷却システムと前記冷却加温システムとを独立して備えた自動販売機において、前記冷却加温システムは第1収納室および第2収納室にそれぞれ第1室内熱交換器と第2室内熱交換器を分岐配管して配置し、冷媒流路を切替ることで第1収納室および第2収納室を冷却または加温可能に構成され、前記冷却システムの蒸発器は冷却専用室に、前記冷却システムの室内凝縮器を前記第2収納室に有し、前記蒸発器の戻り配管と前記室内凝縮器の下流側配管とを開閉可能な弁機構を介して接続したことで、冷却加温システムを稼動するために必要な冷媒量を確保して冷却加温システムの著しい効率低下を防止することができるとともに、冷却システムの室内凝縮器を用いて加温することで加温効率の著しい低下を防止することができ、電気ヒータなどの別の加熱手段を用いて収納室を加温するのに比べて、消費電力量を削減することができる。   The invention according to claim 5 has a plurality of storage chambers for storing commodities in the upper portion, a machine chamber in the lower portion, an evaporator of the cooling system below the storage chamber, and an indoor heat exchanger of the cooling and heating system. A condenser and a compressor disposed in the machine room and connected to the evaporator; an outdoor heat exchanger and a compressor connected to the indoor heat exchanger; and the cooling system and the cooling and heating system. The cooling and heating system includes a first indoor heat exchanger and a second indoor heat exchanger that are branched and arranged in the first storage chamber and the second storage chamber, respectively. The first storage chamber and the second storage chamber can be cooled or heated by switching the flow path, the evaporator of the cooling system is in the cooling dedicated chamber, and the indoor condenser of the cooling system is in the second storage. A return pipe of the evaporator and the chamber By connecting the downstream piping of the condenser through a valve mechanism that can be opened and closed, the amount of refrigerant necessary to operate the cooling and heating system is secured, and a significant decrease in efficiency of the cooling and heating system is prevented. In addition, it is possible to prevent a significant decrease in the heating efficiency by heating using the indoor condenser of the cooling system, and for heating the storage chamber using another heating means such as an electric heater. Compared to the power consumption, the power consumption can be reduced.

請求項6に記載の発明は、請求項5に記載の発明にさらに、第2収納室が第2室内熱交換器の蒸発作用によって冷却されている場合、室内凝縮器は不使用状態であり、前記室内凝縮器に接続された弁機構を常に開放することにより、室内凝縮器内に冷媒が滞留することを防ぐことができ、冷却システムを稼動するために必要な冷媒量を確保して冷却効率の著しい低下を防止することができる。   The invention according to claim 6 is the invention according to claim 5, wherein, when the second storage chamber is cooled by the evaporation action of the second indoor heat exchanger, the indoor condenser is in an unused state, By always opening the valve mechanism connected to the indoor condenser, it is possible to prevent the refrigerant from staying in the indoor condenser, and to secure the amount of refrigerant necessary for operating the cooling system to ensure cooling efficiency. Can be prevented from significantly decreasing.

請求項7に記載の発明は、請求項1から6のいずれか一項に記載の発明に、加温システムあるいは冷却加温システムに使用されている冷媒は可燃性冷媒であることにより、室内熱交換器内での冷媒滞留を防止し、加温システムを稼動するために必要な冷媒量を確保できるので余分に可燃性冷媒を充填する必要がなく、省冷媒化を図ることができ安全性を高めることができる。   According to a seventh aspect of the invention, in the invention according to any one of the first to sixth aspects, the refrigerant used in the heating system or the cooling and heating system is a flammable refrigerant. Refrigerant stagnation in the exchanger can be prevented, and the amount of refrigerant necessary to operate the heating system can be secured, so there is no need to add extra flammable refrigerant, saving refrigerant and increasing safety. Can be increased.

以下、本発明の実施の形態について、図面を参照しながら説明するが、従来例または先に説明した実施の形態と同一構成については同一符号を付して、その詳細な説明は省略する。なお、この実施の形態によってこの発明が限定されるものではない。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(実施の形態1)
図1は本発明の実施の形態1における自動販売機本体の正面図である。図2は図1のA−A断面図、図3は本発明の実施の形態1における自動販売機の冷媒回路図である。
(Embodiment 1)
FIG. 1 is a front view of a vending machine main body according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a refrigerant circuit diagram of the vending machine according to the first embodiment of the present invention.

図1において、自動販売機本体20内には商品を冷却または加温する収納室21,22,23,24が左右方向に区画形成されている。具体的には右収納室21、右中収納室22、左中収納室23、左収納室24が図1のように区画形成され、冷却又は加温可能な左収納室24(第1収納室ともいう)と左中収納室23(第2収納室ともいう)は断熱区画壁25で左右に仕切られ、左中収納室23と冷却専用の右中収納室22は断熱区画壁26で、右中収納室22と右収納室21は断熱部材を有さない仕切板27で区画形成されている。   In FIG. 1, storage rooms 21, 22, 23, and 24 for cooling or heating products are partitioned in the left and right direction in the vending machine main body 20. Specifically, a right storage chamber 21, a right middle storage chamber 22, a left middle storage chamber 23, and a left storage chamber 24 are partitioned as shown in FIG. 1, and a left storage chamber 24 (first storage chamber) that can be cooled or heated. And the left middle storage chamber 23 (also referred to as a second storage chamber) are partitioned by a heat insulating partition wall 25 on the left and right, and the left middle storage chamber 23 and the cooling right right storage chamber 22 are a heat insulating partition wall 26 on the right. The middle storage chamber 22 and the right storage chamber 21 are partitioned by a partition plate 27 having no heat insulating member.

左収納室24内には商品を収納する収納部24aが着脱可能に収納され、収納部24aの下部で左収納室24空間内に冷却加温室28が構成されている。冷却加温室28内には左収納室24を加温する凝縮器29(第1室内熱交換器ともいう)と左収納室24を冷却する蒸発器30が配管を共有せず別々に備えられ、冷却加温室28内で、自動販売機本体20の前後方向に凝縮器29と蒸発器30とが配置されている。実施例では自動販売機本体20の前方側に蒸発器30、後方に凝縮器29を配置し、収納室21〜24の後方に備えた戻りダクト20aから遠い方に蒸発器30を設置している。   A storage section 24a for storing products is detachably stored in the left storage chamber 24, and a cooling greenhouse 28 is configured in the left storage chamber 24 space below the storage section 24a. A condenser 29 (also referred to as a first indoor heat exchanger) that heats the left storage chamber 24 and an evaporator 30 that cools the left storage chamber 24 are separately provided in the cooling chamber 28 without sharing piping. A condenser 29 and an evaporator 30 are arranged in the front-rear direction of the vending machine body 20 in the cooling chamber 28. In the embodiment, the evaporator 30 is disposed on the front side of the vending machine main body 20, the condenser 29 is disposed on the rear side, and the evaporator 30 is disposed on the far side from the return duct 20a provided behind the storage chambers 21 to 24. .

このため上下方向に形成された戻りダクト20aを上方から下方に向かって冷却加温室28内に帰還した空気は、ほぼ水平方向に向きを変えて凝縮器29や蒸発器30と熱交換する。このため戻りダクト20aに蒸発器30が近いと上部から下降してきた空気は蒸発器30の上部側を通過しやすくなるため、蒸発器30の下部を通過せず熱交換がほとんどされない。   For this reason, the air that has returned to the cooling greenhouse 28 from the upper side to the lower side through the return duct 20a formed in the vertical direction changes its direction almost horizontally and exchanges heat with the condenser 29 and the evaporator 30. For this reason, when the evaporator 30 is close to the return duct 20a, the air descending from the upper part easily passes through the upper side of the evaporator 30, and therefore does not pass through the lower part of the evaporator 30 and hardly exchanges heat.

このため熱交換されないままの空気がファン31によって庫内を冷却することになり冷却効率が低下する虞がある。実施例では冷却時よりも加温時の方が効率良く設計されている(後述するように圧縮機43は断熱カバー部材69で囲って冷却性能を落として加温性能を向上している)ため、戻りダクト20a側に凝縮器29を配置し、その前方に蒸発器30を配置した方が、より蒸発器30と熱交換されるので冷却効率を向上できる。そして冷却加温室28の凝縮器29および蒸発器30の前方には空気を強制循環させるファン31が配置している。   For this reason, the air that has not been heat-exchanged cools the inside of the cabinet by the fan 31 and there is a risk that the cooling efficiency will be reduced. In the embodiment, the heating is designed more efficiently than the cooling (as will be described later, the compressor 43 is surrounded by a heat insulating cover member 69 to reduce the cooling performance and improve the heating performance). In the case where the condenser 29 is disposed on the return duct 20a side and the evaporator 30 is disposed in front of the condenser 29, heat exchange with the evaporator 30 is further performed, so that the cooling efficiency can be improved. A fan 31 for forcibly circulating air is disposed in front of the condenser 29 and the evaporator 30 of the cooling greenhouse 28.

また同様に、左中収納室23内には収納部23aが着脱可能に収納され、収納部23aの下部には冷却加温室32が構成され、左中収納室23を加温する凝縮器33(第2室内熱交換器ともいう)と、冷却する蒸発器34が冷却加温室32内に前後方向に配置されている。また右中収納室22内には収納部22aが、右収納室21内には収納部21aが着脱可能に収納され、それぞれの下部には冷却室35、36が形成され、冷却室35内には蒸発器37、冷却室36内には蒸発器38が構成されている。   Similarly, a storage portion 23a is detachably stored in the left middle storage chamber 23, and a cooling greenhouse 32 is formed in the lower portion of the storage portion 23a. Also referred to as a second indoor heat exchanger), an evaporator 34 for cooling is disposed in the cooling greenhouse 32 in the front-rear direction. In addition, a storage portion 22a is detachably stored in the right middle storage chamber 22, and a storage portion 21a is detachably stored in the right storage chamber 21, and cooling chambers 35 and 36 are formed in the lower portions of the storage portion 22a. An evaporator 37 and an evaporator 38 are formed in the cooling chamber 36.

また冷却加温室28と同様に、冷却加温室32、冷却室35、36内にはそれぞれファン39、40、41が構成されている。   Similarly to the cooling chamber 28, fans 39, 40, and 41 are provided in the cooling chamber 32 and the cooling chambers 35 and 36, respectively.

収納室21〜24の下部には機械室42があり、収納室21〜24と上下方向に断熱区画して形成されている。機械室42内には左収納室24と左中収納室23を加温するインバータ圧縮機43、左収納室24、左中収納室23、右中収納室22そして右収納室21を冷却する圧縮機44が配置されている。さらに圧縮機43と接続される室外熱交換器45、圧縮機44と接続される凝縮器46が備えられ、室外熱交換器45と凝縮器46はフィンを共有する一体型熱交換器47として構成されている。そしてファン48を一体型熱交換器47の後方に配置し、機械室42の前方から取入れた空気を一体型熱交換器47で熱交換させて後方あるいは機械室42内に備えた蒸発皿42aへ通風して蒸発促進している。   There is a machine room 42 at the lower part of the storage chambers 21 to 24, and is formed by being thermally insulated from the storage chambers 21 to 24 in the vertical direction. In the machine room 42, an inverter compressor 43 for heating the left storage room 24 and the left middle storage room 23, a left storage room 24, a left middle storage room 23, a right middle storage room 22 and a compression for cooling the right storage room 21 are provided. A machine 44 is arranged. Further, an outdoor heat exchanger 45 connected to the compressor 43 and a condenser 46 connected to the compressor 44 are provided. The outdoor heat exchanger 45 and the condenser 46 are configured as an integrated heat exchanger 47 sharing fins. Has been. Then, the fan 48 is disposed behind the integrated heat exchanger 47, and the air taken from the front of the machine chamber 42 is heat-exchanged by the integrated heat exchanger 47 to the evaporating dish 42a provided in the rear or in the machine chamber 42. Ventilation is promoted by ventilation.

すなわち自動販売機本体20には左収納室24と左中収納室23とを加温する加温システムと、左収納室24、左中収納室23、右中収納室22そして右収納室21を冷却する冷却システムが構成されており、加温システムは圧縮機43から分岐して、凝縮器29への冷媒回路を開閉する開閉弁49と凝縮器33への冷媒回路を開閉する開閉弁50とを圧縮機43とに並列接続し、開閉弁49の下流側に凝縮器29、膨張機構51(例えばキャピラリチューブ)、逆止弁52が接続され、開閉弁50の下流側に凝縮器33、膨張機構53(例えばキャピラリチューブ)、逆止弁54が接続されている。   That is, the vending machine body 20 includes a heating system for heating the left storage chamber 24 and the left middle storage chamber 23, a left storage chamber 24, a left middle storage chamber 23, a right middle storage chamber 22, and a right storage chamber 21. A cooling system for cooling is configured, and the heating system branches from the compressor 43, and an on-off valve 49 for opening and closing the refrigerant circuit to the condenser 29 and an on-off valve 50 for opening and closing the refrigerant circuit to the condenser 33, Are connected in parallel to the compressor 43, the condenser 29, the expansion mechanism 51 (for example, capillary tube) and the check valve 52 are connected to the downstream side of the on-off valve 49, and the condenser 33 is expanded on the downstream side of the on-off valve 50. A mechanism 53 (for example, a capillary tube) and a check valve 54 are connected.

また膨張機構51および逆止弁52と並列に高低圧をバランスさせるバランス弁55(弁機構)が接続されている。また膨張機構53および逆止弁54と並列に高低圧をバランスさせるバランス弁56(弁機構)が接続されている。   A balance valve 55 (valve mechanism) that balances high and low pressures is connected in parallel with the expansion mechanism 51 and the check valve 52. A balance valve 56 (valve mechanism) that balances high and low pressures is connected in parallel with the expansion mechanism 53 and the check valve 54.

そして開閉弁49の配管系と開閉弁50の配管系は低圧配管57に接続し、室外熱交換器45を通って圧縮機43に接続される。   The piping system of the on-off valve 49 and the piping system of the on-off valve 50 are connected to the low-pressure pipe 57 and are connected to the compressor 43 through the outdoor heat exchanger 45.

また冷却システムは圧縮機44に凝縮器46が接続され、凝縮器46の下流側で分岐して三方切替弁58と三方切替弁59を並列接続し、さらに三方切替弁58に膨張機構(例えばキャピラリチューブ)60と膨張機構(例えばキャピラリチューブ)61が並列接続され、膨張機構60の下流に左収納室24を冷却する蒸発器30、膨張機構61の下流に左中収納室23を冷却する蒸発器34を接続し、互いの出口配管が合流して低圧配管64に接続する。   In the cooling system, a condenser 46 is connected to the compressor 44, and the three-way switching valve 58 and the three-way switching valve 59 are connected in parallel by branching on the downstream side of the condenser 46. Further, an expansion mechanism (for example, a capillary) is connected to the three-way switching valve 58. Tube) 60 and an expansion mechanism (for example, a capillary tube) 61 are connected in parallel, an evaporator 30 that cools the left storage chamber 24 downstream of the expansion mechanism 60, and an evaporator that cools the left middle storage chamber 23 downstream of the expansion mechanism 61. 34 are connected to each other, and the outlet pipes join together to connect to the low-pressure pipe 64.

また三方切替弁59に膨張機構62と膨張機構63が並列接続されて膨張機構62の下流に右中収納室22を冷却する蒸発器37、膨張機構63の下流に右収納室21を冷却する蒸発器38を接続し、さらに蒸発器37の出口配管37aは蒸発器38の入口配管38aに合流するように接続され、上流側に蒸発器37、下流側に蒸発器38となるように直列接続されている。そして蒸発器38の出口配管38bと、低圧配管64とが合流し圧縮機44に接続される。また蒸発器37は蒸発器38よりも内容積が小さく構成されている。   In addition, an expansion mechanism 62 and an expansion mechanism 63 are connected in parallel to the three-way switching valve 59, an evaporator 37 that cools the right middle storage chamber 22 downstream of the expansion mechanism 62, and an evaporation that cools the right storage chamber 21 downstream of the expansion mechanism 63. Further, the outlet pipe 37a of the evaporator 37 is connected so as to join the inlet pipe 38a of the evaporator 38, and is connected in series so as to become the evaporator 37 on the upstream side and the evaporator 38 on the downstream side. ing. Then, the outlet pipe 38 b of the evaporator 38 and the low pressure pipe 64 are joined and connected to the compressor 44. The evaporator 37 has a smaller internal volume than the evaporator 38.

また、凝縮器46と室外熱交換器45は同一風路内に設置され、室外熱交換器45を用いて凝縮器46で発生する冷却システムの排熱と外気の熱を吸熱することで収納室23、24を加温することができる。   In addition, the condenser 46 and the outdoor heat exchanger 45 are installed in the same air path, and the outdoor heat exchanger 45 is used to absorb the exhaust heat of the cooling system generated in the condenser 46 and the heat of the outside air. 23 and 24 can be heated.

以上のように構成された本発明の自動販売機について、以下その動作を説明する。   The operation of the vending machine of the present invention configured as described above will be described below.

全ての収納室21〜24を冷却する場合、三方切換弁58、59の流路を開とし、圧縮機44を駆動する。圧縮機44から吐出された冷媒は、凝縮器46で凝縮された後、三方切換弁58、59を経由してそれぞれ冷却用の膨張機構60〜63で減圧されて、蒸発器30、34、37、38へ供給される。そして、蒸発器30、34、37、38で蒸発した冷媒が圧縮機44へ還流する。   When cooling all the storage chambers 21 to 24, the flow paths of the three-way switching valves 58 and 59 are opened, and the compressor 44 is driven. The refrigerant discharged from the compressor 44 is condensed by the condenser 46 and then decompressed by the cooling expansion mechanisms 60 to 63 via the three-way switching valves 58 and 59, respectively, and the evaporators 30, 34 and 37. , 38. Then, the refrigerant evaporated in the evaporators 30, 34, 37, and 38 is returned to the compressor 44.

このとき、収納室21〜24の内、所定の温度に達した収納室は、該当する三方切換弁58、59の流路を閉塞して冷媒の供給を停止する。さらに、全ての収納室21〜24が所定の温度に達すると圧縮機の運転を停止する。   At this time, the storage chamber that has reached a predetermined temperature among the storage chambers 21 to 24 closes the flow path of the corresponding three-way switching valves 58 and 59 and stops the supply of the refrigerant. Further, when all the storage chambers 21 to 24 reach a predetermined temperature, the operation of the compressor is stopped.

次に、収納室23、24を加温しながら収納室21、22を冷却する場合、開閉弁49、50および三方切換弁59の流路を開、三方切替弁50の流路を閉として高低圧バランス弁55、56を閉とし、圧縮機43および圧縮機44を駆動する。圧縮機43から吐出された冷媒は、開閉弁49、50を経由して凝縮器29、33で凝縮された後、それぞれ加温用膨張機構51、53で減圧されて、逆止弁52、54を通って低圧配管57から室外熱交換器45へ供給される。そして、室外熱交換器45で蒸発した冷媒が圧縮機43へ還流する。   Next, when the storage chambers 21 and 22 are cooled while heating the storage chambers 23 and 24, the flow paths of the on-off valves 49 and 50 and the three-way switching valve 59 are opened and the flow path of the three-way switching valve 50 is closed. The low pressure balance valves 55 and 56 are closed, and the compressor 43 and the compressor 44 are driven. The refrigerant discharged from the compressor 43 is condensed by the condensers 29 and 33 via the on-off valves 49 and 50, and then decompressed by the heating expansion mechanisms 51 and 53, respectively. And is supplied from the low pressure pipe 57 to the outdoor heat exchanger 45. Then, the refrigerant evaporated in the outdoor heat exchanger 45 is returned to the compressor 43.

また、圧縮機44から吐出された冷媒は、凝縮器46で凝縮された後、三方切換弁59を経由してそれぞれ冷却用膨張機構62、63で減圧されて、蒸発器37、38へ供給される。そして、蒸発器37、38で蒸発した冷媒が圧縮機44へ還流する。   The refrigerant discharged from the compressor 44 is condensed by the condenser 46, then decompressed by the cooling expansion mechanisms 62 and 63 via the three-way switching valve 59, and supplied to the evaporators 37 and 38. The Then, the refrigerant evaporated in the evaporators 37 and 38 is returned to the compressor 44.

このとき、収納室23、24の内、所定の加温温度に達した収納室は、該当する開閉弁50または開閉弁49の流路を閉塞して冷媒の供給を停止する。さらに、収納室23、24が所定の温度に達すると圧縮機43の運転を停止する。また、収納室21、22の内、所定の冷却温度に達した収納室は、該当する三方切換弁59の流路を閉塞して冷媒の供給を停止する。さらに、収納室21、22が所定の温度に達すると圧縮機44の運転を停止する。   At this time, among the storage chambers 23 and 24, the storage chamber that has reached a predetermined heating temperature closes the flow path of the corresponding on-off valve 50 or on-off valve 49 and stops the supply of the refrigerant. Further, when the storage chambers 23 and 24 reach a predetermined temperature, the operation of the compressor 43 is stopped. Moreover, the storage chamber which reached the predetermined cooling temperature among the storage chambers 21 and 22 closes the flow path of the corresponding three-way switching valve 59 and stops the supply of the refrigerant. Further, when the storage chambers 21 and 22 reach a predetermined temperature, the operation of the compressor 44 is stopped.

次に、収納室24を加温しながら他の収納室21〜23を冷却する場合、開閉弁49を開とし、開閉弁50を閉とし、三方切換弁58のうち蒸発器34流路を開放し蒸発器30に流れる流路を閉じ、三方切替弁59から膨張機構62を通って蒸発器37、蒸発器38の順に流れる冷媒回路を開放し、高低圧バランス弁55、56を閉とし、圧縮機43および圧縮機44を駆動する。圧縮機43から吐出された冷媒は、開閉弁49を経由して凝縮器29で凝縮された後、加温用の膨張機構51で減圧されて、逆止弁52と低圧配管57から室外熱交換器45へ供給される。   Next, when the other storage chambers 21 to 23 are cooled while the storage chamber 24 is heated, the on-off valve 49 is opened, the on-off valve 50 is closed, and the evaporator 34 flow path in the three-way switching valve 58 is opened. Then, the flow path to the evaporator 30 is closed, the refrigerant circuit flowing in the order of the evaporator 37 and the evaporator 38 from the three-way switching valve 59 through the expansion mechanism 62 is opened, the high and low pressure balance valves 55 and 56 are closed, and the compression is performed. The machine 43 and the compressor 44 are driven. The refrigerant discharged from the compressor 43 is condensed by the condenser 29 via the on-off valve 49 and then depressurized by the heating expansion mechanism 51, and outdoor heat exchange is performed from the check valve 52 and the low-pressure pipe 57. To the vessel 45.

そして、室外熱交換器45で蒸発した冷媒が圧縮機43へ還流する。また、圧縮機44から吐出された冷媒は、凝縮器46で凝縮された後、三方切換弁58、59を経由してそれぞれ冷却用膨張機構61、62、63で減圧されて、蒸発器34、37、38へ供給され、圧縮機44へ還流する。   Then, the refrigerant evaporated in the outdoor heat exchanger 45 is returned to the compressor 43. The refrigerant discharged from the compressor 44 is condensed by the condenser 46, and then decompressed by the cooling expansion mechanisms 61, 62, 63 via the three-way switching valves 58, 59, respectively, and the evaporator 34, 37 and 38, and reflux to the compressor 44.

ここで、約3℃の冷蔵温度で冷却された収納室23内に設置された凝縮器33は、加温用膨張機構53と逆止弁54を介して低圧配管57に接続されており、外気温度が低く室外熱交換器45の温度が凝縮器33よりも低温になる場合、すなわち吸入圧力が庫内圧力より低くなる場合は、凝縮器33に滞留した冷媒が加温用膨張機構53と逆止弁54を介して低圧配管57に回収されるが、外気温度が高く室外熱交換器45の温度が凝縮器33よりも高温になる場合は、低圧配管57から冷媒が逆流して冷媒を回収できない虞がある。このため逆止弁54およびバランス弁56を閉じることで凝縮器33に冷媒が滞留することを防止する。   Here, the condenser 33 installed in the storage chamber 23 cooled at a refrigeration temperature of about 3 ° C. is connected to the low-pressure pipe 57 via the heating expansion mechanism 53 and the check valve 54, and the outside air When the temperature is low and the temperature of the outdoor heat exchanger 45 is lower than that of the condenser 33, that is, when the suction pressure is lower than the internal pressure, the refrigerant staying in the condenser 33 is opposite to the heating expansion mechanism 53. The refrigerant is collected in the low-pressure pipe 57 through the stop valve 54. However, when the outdoor air temperature is high and the temperature of the outdoor heat exchanger 45 is higher than that of the condenser 33, the refrigerant flows backward from the low-pressure pipe 57 and collects the refrigerant. There is a possibility that it cannot be done. For this reason, the check valve 54 and the balance valve 56 are closed to prevent the refrigerant from staying in the condenser 33.

しかし、それぞれの収納室21〜24が一旦上記のような冷却および加温に設定されると、自動販売機の場合、数ヶ月そのままの設定で運転される場合が多いために逆止弁54、閉塞されているバランス弁56または開閉弁50から冷媒が漏れ出し凝縮器33に冷媒が溜まってしまう。   However, once the respective storage chambers 21 to 24 are set to the cooling and heating as described above, in the case of a vending machine, the check valve 54, The refrigerant leaks from the closed balance valve 56 or on-off valve 50 and accumulates in the condenser 33.

この冷媒滞留を解消するために、圧縮機43を起動した際に高低圧バランス弁56を所定時間だけ開放する。これによって、外気温度が高い場合などに低圧配管57内の冷媒が閉塞した逆止弁54、バランス弁56を逆流して徐々に凝縮器33側へ漏洩して凝縮器33に滞留した冷媒や閉塞した開閉弁50を通過して凝縮器33に滞留した冷媒を、バランス弁56を介するバイパス配管56aを通って低圧配管57に回収することができる。   In order to eliminate this refrigerant stagnation, the high / low pressure balance valve 56 is opened for a predetermined time when the compressor 43 is started. As a result, when the outside air temperature is high, the refrigerant in the low-pressure pipe 57 is backflowed through the check valve 54 and the balance valve 56, gradually leaks to the condenser 33 side, and the refrigerant or clogged in the condenser 33 is blocked. The refrigerant that has passed through the open / close valve 50 and has accumulated in the condenser 33 can be recovered in the low-pressure pipe 57 through the bypass pipe 56 a through the balance valve 56.

これは、圧縮機43の起動直後には凝縮器29の凝縮温度および室外熱交換器45の蒸発温度が十分上昇しておらず、室外熱交換器45の温度が凝縮器33よりも低温となるためである。なお、室外熱交換器45の温度をさらに低下させるため、高低圧バランス弁56を開放する時に圧縮機43を高速回転で運転してもよい。   This is because immediately after the compressor 43 is started, the condensation temperature of the condenser 29 and the evaporation temperature of the outdoor heat exchanger 45 are not sufficiently increased, and the temperature of the outdoor heat exchanger 45 is lower than that of the condenser 33. Because. In order to further reduce the temperature of the outdoor heat exchanger 45, the compressor 43 may be operated at a high speed when the high / low pressure balance valve 56 is opened.

また、外気温度が5℃以下の時には、圧縮機43の運転時は高低圧バランス弁56を開放し、圧縮機43の停止時は高低圧バランス弁56を閉塞する。これによって、外気温度が高い場合などに冷媒が逆流して閉塞した逆止弁54から徐々に漏洩して凝縮器33に滞留した冷媒を低圧配管57に回収することができる。   When the outside air temperature is 5 ° C. or lower, the high / low pressure balance valve 56 is opened when the compressor 43 is in operation, and the high / low pressure balance valve 56 is closed when the compressor 43 is stopped. Thereby, when the outside air temperature is high or the like, the refrigerant that has gradually leaked from the check valve 54 blocked by the reverse flow of the refrigerant and stayed in the condenser 33 can be recovered in the low-pressure pipe 57.

これは、外気温度が5℃以下で圧縮機43が運転中には室外熱交換器45の温度が不使用状態にある凝縮器33よりも低温となるためである。なお、圧縮機43が停止中には収納室24の高温の凝縮器29に滞留した冷媒が低圧配管57からバイパス配管56a、高低圧バランス弁56を介して、または逆止弁54を介して凝縮器33に逆流する恐れがあるため、高低圧バランス弁56を閉塞することが望ましい。   This is because the temperature of the outdoor heat exchanger 45 is lower than that of the condenser 33 in the unused state while the outside air temperature is 5 ° C. or less and the compressor 43 is in operation. When the compressor 43 is stopped, the refrigerant that has accumulated in the high-temperature condenser 29 in the storage chamber 24 is condensed from the low-pressure pipe 57 via the bypass pipe 56a, the high-low pressure balance valve 56, or via the check valve 54. It is desirable to close the high / low pressure balance valve 56 because there is a risk of backflow to the vessel 33.

また、収納室24の加温能力が不足した時には、圧縮機43の運転中に所定時間だけ高温用膨張機構53を絞って高低圧バランス弁56を開放する。これによって、外気温度が高い場合などに逆止弁54を逆流した冷媒が徐々に漏洩して凝縮器33に滞留した冷媒を低圧配管57を通って圧縮機43に回収することができる。これは、加温能力不足の一因として冷媒量不足が考えられるため、高温用膨張機構53を絞って室外熱交換器45の温度が凝縮器33よりも低温にして、不使用の凝縮器33の滞留冷媒を回収するものである。   Further, when the heating capacity of the storage chamber 24 is insufficient, the high-pressure balance valve 56 is opened by restricting the high-temperature expansion mechanism 53 for a predetermined time during the operation of the compressor 43. As a result, when the outside air temperature is high, the refrigerant that has flowed back through the check valve 54 gradually leaks and stays in the condenser 33, and the refrigerant that has accumulated in the condenser 33 can be recovered through the low-pressure pipe 57. This is because the refrigerant amount is insufficient as a cause of insufficient heating capacity. Therefore, the high-temperature expansion mechanism 53 is squeezed so that the temperature of the outdoor heat exchanger 45 is lower than that of the condenser 33, and the unused condenser 33 is used. The remaining refrigerant is recovered.

また、加温システムの圧縮機43の回転数を高回転に高めることで、加温システムの室外熱交換器45の温度を、収納室23内の冷却時の雰囲気温度とほぼ同じ温度になっている使用しない第2室内熱交換器33の温度よりも低い蒸発温度に保つことで、冷却中の収納室23内に設置された冷却時に使用しない加温用の第2室内熱交換器33内の冷媒を必要に応じて回収することで、特に商品追加などに対応して加温能力を増大する際に加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止することができる。   Further, by increasing the number of rotations of the compressor 43 of the heating system to a high speed, the temperature of the outdoor heat exchanger 45 of the heating system becomes substantially the same as the ambient temperature during cooling in the storage chamber 23. By keeping the evaporation temperature lower than the temperature of the second indoor heat exchanger 33 that is not used, the temperature inside the second indoor heat exchanger 33 for heating that is installed in the cooling storage chamber 23 and is not used at the time of cooling is set. By collecting the refrigerant as needed, the amount of refrigerant required to operate the heating system is secured especially when the heating capacity is increased in response to product additions, etc., and the heating efficiency is significantly reduced. Can be prevented.

なお、圧縮機43を起動する直前に、冷却中の当該高低圧バランス弁34を閉塞したまま、加温中の当該高低圧バランス弁33を開放して高低圧をバランスさせることが望ましい。これによって、左中収納室23の冷却中に不使用の凝縮器33に冷媒が滞留することを防止しながら、高低圧をバランスさせて圧縮機43の起動時の負荷を低減することができ、圧縮機43の耐久性の低下を抑制することができる。   Note that it is desirable to balance the high and low pressures by opening the high and low pressure balance valve 33 during heating while the high and low pressure balance valve 34 being cooled is closed immediately before starting the compressor 43. Thereby, while preventing the refrigerant from staying in the unused condenser 33 during the cooling of the left middle storage chamber 23, the load at the start of the compressor 43 can be reduced by balancing the high and low pressures, A decrease in the durability of the compressor 43 can be suppressed.

以上のように、本発明の自動販売機においては収納室23、24を加温する際に、庫外熱交換器45を用いて凝縮器46で発生する冷却システムの排熱と外気の熱を吸熱することで収納室23、24を効率よく加温することができるとともに、冷却中の収納室内に設置され、冷却時に使用しない加温用の室内熱交換器内に冷媒が滞留し続けることを防ぐことで、加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止するので、電気ヒータなどの別の加熱手段を用いて収納室を加温する場合に比べて、消費電力量を削減することができる。   As described above, in the vending machine of the present invention, when the storage chambers 23 and 24 are heated, the exhaust heat of the cooling system and the heat of the outside air generated by the condenser 46 using the external heat exchanger 45 are used. By absorbing heat, the storage chambers 23 and 24 can be efficiently heated, and the refrigerant is kept in the indoor heat exchanger for heating that is installed in the cooling storage chamber and is not used during cooling. By preventing this, the amount of refrigerant required to operate the heating system is secured to prevent a significant decrease in heating efficiency. Therefore, when heating the storage room using another heating means such as an electric heater, etc. Compared to the power consumption, the power consumption can be reduced.

また収納室24を加温室、その他の収納室を冷却室として説明したが、収納室24を冷却室、収納室23を加温室と設定した場合でも、収納室24の不使用となる凝縮器29に対して上記と同様にバランス弁55、逆止弁52を動作させることで収納室23の凝縮器33の加温システムを稼動するために必要な冷媒量を確保して加温効率の著しい低下を防止することができる。   Further, although the storage room 24 is described as a heated room and the other storage rooms are set as cooling rooms, the condenser 29 which is not used in the storage room 24 even when the storage room 24 is set as a cooling room and the storage room 23 is set as a heated room. On the other hand, by operating the balance valve 55 and the check valve 52 in the same manner as described above, the amount of refrigerant necessary for operating the heating system of the condenser 33 in the storage chamber 23 is ensured and the heating efficiency is significantly reduced. Can be prevented.

また、冷媒が可燃性冷媒であれば、滞留する冷媒量分を換算して余分に冷媒量を設定することはなく、必要最小限の冷媒量に設定することができ、安全性を高めることができる。また圧縮機43を断熱カバー部材69で覆うことで、圧縮機43から放熱妨害された熱は、吐出冷媒ガス温度を上昇させて室内熱交換器29、33に運ばれるため室内側で熱交換される熱量が増加し、加温能力を上昇させることができる。   In addition, if the refrigerant is a flammable refrigerant, the amount of refrigerant that remains is not converted and the amount of refrigerant is not set excessively, and can be set to the minimum amount of refrigerant, which increases safety. it can. In addition, by covering the compressor 43 with the heat insulating cover member 69, the heat that is dissipated from the compressor 43 is transported to the indoor heat exchangers 29 and 33 by increasing the discharged refrigerant gas temperature, so that heat is exchanged indoors. The amount of heat generated increases, and the heating capacity can be increased.

(実施の形態2)
図4は、本発明の実施の形態2における自動販売機の冷媒回路図である。
(Embodiment 2)
FIG. 4 is a refrigerant circuit diagram of the vending machine according to the second embodiment of the present invention.

自動販売機本体20は図1,図2と同様に構成されており、左収納室104(第2収納室ともいう)には室内熱交換器70と第2凝縮器71とがそれぞれパス配管を専用にして構成されている。左中収納室103(第1収納室ともいう)には室内熱交換器72が配置され、右中収納室102には蒸発器73、右収納室101には蒸発器74が形成されている。室内熱交換器と蒸発器の配置構成は実施の形態1と同様に冷却加温室または冷却室内に備えられ、各々のファンによって収納室へ強制送風している。   The vending machine main body 20 is configured in the same manner as in FIGS. 1 and 2, and an indoor heat exchanger 70 and a second condenser 71 are respectively connected to the left storage chamber 104 (also referred to as a second storage chamber) by path piping. It is configured exclusively. An indoor heat exchanger 72 is disposed in the left middle storage chamber 103 (also referred to as a first storage chamber), an evaporator 73 is formed in the right middle storage chamber 102, and an evaporator 74 is formed in the right storage chamber 101. The arrangement configuration of the indoor heat exchanger and the evaporator is provided in the cooling greenhouse or the cooling chamber as in the first embodiment, and forced air is sent to the storage chamber by each fan.

収納室の下部には機械室42があり、機械室42内には左収納室104と左中収納室103を冷却または加温するインバータ圧縮機75を有し、右中収納室102と右収納室101を冷却し、第2凝縮器71(室内凝縮器ともいう)によって左収納室104を加温する一定速の圧縮機76が配置されている。   There is a machine room 42 in the lower part of the storage room. The machine room 42 has an inverter compressor 75 for cooling or heating the left storage room 104 and the left middle storage room 103, and the right middle storage room 102 and the right storage room. A constant speed compressor 76 that cools the chamber 101 and heats the left storage chamber 104 by a second condenser 71 (also referred to as an indoor condenser) is disposed.

さらに冷却加温システムの圧縮機75に接続される室外熱交換器77、室内熱交換器70、72への冷媒流路を切替える四方弁78を備え、さらに左収納室24と左中収納室23の冷却時に室外熱交換器77の下流に液冷媒を貯留するレシーバ84を接続し、レシーバ84に高圧配管85が接続され、室内熱交換器70と72への冷媒流路を切替える三方弁79、三方弁79に室内熱交換器70の冷却用の膨張機構80(例えばキャピラリチューブ)と室内熱交換器72の冷却用の膨張機構81(例えばキャピラリチューブ)とが並列に接続されて、室内熱交換器70と72が蒸発器として作用している。   Further, an outdoor heat exchanger 77 connected to the compressor 75 of the cooling and heating system, a four-way valve 78 for switching the refrigerant flow path to the indoor heat exchangers 70 and 72, and the left storage chamber 24 and the left middle storage chamber 23 are further provided. A three-way valve 79 that connects a receiver 84 that stores liquid refrigerant downstream of the outdoor heat exchanger 77 during cooling, a high-pressure pipe 85 connected to the receiver 84, and switches the refrigerant flow path to the indoor heat exchangers 70 and 72; An expansion mechanism 80 (for example, a capillary tube) for cooling the indoor heat exchanger 70 and an expansion mechanism 81 (for example, a capillary tube) for cooling the indoor heat exchanger 72 are connected in parallel to the three-way valve 79 to exchange the indoor heat. Vessels 70 and 72 act as evaporators.

そして左収納室104と左中収納室103の加温時には、四方弁78の下流側で室内熱交換器70と72とが並列接続され、室内熱交換器70と72とが凝縮器として作用した後、冷却用膨張機構80、81とは別の加温用の膨張機構82、83が室内熱交換器70と72の出口配管に接続され、低圧配管86に合流する。低圧配管86には逆止弁87が接続され、低圧配管86の逆止弁87の下流側と高圧配管85のレシーバ84の上流側とで配管が合流し室外熱交換器77に接続されて冷却加温システムが構成されている。逆止弁87は収納室103、104が冷却時に膨張機構82、83への逆流を防止することができる。   When the left storage chamber 104 and the left middle storage chamber 103 are heated, the indoor heat exchangers 70 and 72 are connected in parallel on the downstream side of the four-way valve 78, and the indoor heat exchangers 70 and 72 act as condensers. Thereafter, heating expansion mechanisms 82 and 83 different from the cooling expansion mechanisms 80 and 81 are connected to the outlet pipes of the indoor heat exchangers 70 and 72 and merge with the low-pressure pipe 86. A check valve 87 is connected to the low-pressure pipe 86, and the pipe joins at the downstream side of the check valve 87 of the low-pressure pipe 86 and the upstream side of the receiver 84 of the high-pressure pipe 85 and is connected to the outdoor heat exchanger 77 for cooling. A heating system is configured. The check valve 87 can prevent back flow to the expansion mechanisms 82 and 83 when the storage chambers 103 and 104 are cooled.

一方、冷却システムの圧縮機76には第2凝縮器71、蒸発器73、74への冷媒流路を切替える四方弁88、室外に設置された凝縮器89が備えられている。   On the other hand, the compressor 76 of the cooling system is provided with a second condenser 71, a four-way valve 88 for switching the refrigerant flow path to the evaporators 73 and 74, and a condenser 89 installed outside the room.

左収納室104を冷却する場合、すなわち第2凝縮器71に冷媒を流さない場合、圧縮機76から吐出した冷媒は四方弁88を切替えて凝縮器89で凝縮され、凝縮器89の下流に備えた三方弁90に蒸発器73、74の膨張機構91、92(例えばキャピラリーチューブ)が並列に接続され、蒸発器73の出口配管は蒸発器74の入口配管に合流するように直列配管93が構成されている。   When the left storage chamber 104 is cooled, that is, when no refrigerant flows through the second condenser 71, the refrigerant discharged from the compressor 76 is condensed by the condenser 89 by switching the four-way valve 88, and is provided downstream of the condenser 89. In addition, expansion mechanisms 91 and 92 (for example, capillary tubes) of the evaporators 73 and 74 are connected in parallel to the three-way valve 90, and a series pipe 93 is configured so that the outlet pipe of the evaporator 73 joins the inlet pipe of the evaporator 74. Has been.

そして、蒸発器74の出口配管である低圧配管94が圧縮機76に接続されている。また、左収納室104を加温する場合、すなわち第2凝縮器71に冷媒を流す場合、圧縮機76から吐出した冷媒は四方弁88を切替えて第2凝縮器71で凝縮され、第2凝縮器71と第2凝縮器71の下流となる凝縮器89とをつなぐ接続配管95を通って四方弁88を介して凝縮器89で再度凝縮され、三方弁90を介して膨張機構91、92で減圧されて蒸発器73、74によって右中収納室102、右収納室101を冷却して圧縮機に戻るように構成されている。また接続配管95と低圧配管94とは高低圧バランス弁96(弁機構)で接続されている。   A low-pressure pipe 94 that is an outlet pipe of the evaporator 74 is connected to the compressor 76. Further, when the left storage chamber 104 is heated, that is, when the refrigerant flows through the second condenser 71, the refrigerant discharged from the compressor 76 is condensed by the second condenser 71 by switching the four-way valve 88, and the second condensation is performed. Through the connecting pipe 95 connecting the condenser 71 and the condenser 89 downstream of the second condenser 71, it is condensed again by the condenser 89 via the four-way valve 88, and by the expansion mechanisms 91, 92 via the three-way valve 90. The right middle storage chamber 102 and the right storage chamber 101 are cooled by the evaporators 73 and 74 and returned to the compressor after being decompressed. The connection pipe 95 and the low pressure pipe 94 are connected by a high / low pressure balance valve 96 (valve mechanism).

高低圧バランス弁96は収納室104を冷却設定とする場合に第2凝縮器71に冷媒が流れないように四方弁88を切り換えた時に開放して、接続配管95を通じて第2凝縮器71を蒸発器73、74に連通するものである。   The high / low pressure balance valve 96 is opened when the four-way valve 88 is switched so that the refrigerant does not flow into the second condenser 71 when the storage chamber 104 is set to be cooled, and the second condenser 71 is evaporated through the connection pipe 95. The units 73 and 74 communicate with each other.

ここで、収納室104、103は冷却と加温の切り換えが可能であり、冷却する場合は冷却加温システムの四方弁78を切り換えて室内熱交換器70、72で冷媒を蒸発することによって約3℃の冷蔵温度に保ち、加温する場合は冷却加温システムの四方弁78を切り換えて室内熱交換器70、72で冷媒を凝縮することによって約54℃の高温に保つ。   Here, the storage chambers 104 and 103 can be switched between cooling and heating. When cooling, the four-way valve 78 of the cooling and heating system is switched and the refrigerant is evaporated by the indoor heat exchangers 70 and 72. The temperature is kept at a refrigeration temperature of 3 ° C. When heating is performed, the four-way valve 78 of the cooling and heating system is switched, and the refrigerant is condensed in the indoor heat exchangers 70 and 72 so as to maintain a high temperature of about 54 ° C.

また、収納室104を加温しながら収納室103を冷却する場合は、冷却システムの流路切換弁88を切り換えて第2凝縮器71で冷媒を凝縮することによって約54℃の高温に保つとともに、冷却加温システムの四方弁78を切り換えて室内熱交換器72で冷媒を蒸発することによって約3℃の冷蔵温度に保つ。またこのとき、三方弁79によって室内熱交換器70には冷媒が流れないようしている。   When cooling the storage chamber 103 while heating the storage chamber 104, the refrigerant is condensed in the second condenser 71 by switching the flow path switching valve 88 of the cooling system and kept at a high temperature of about 54 ° C. The refrigeration temperature is maintained at about 3 ° C. by switching the four-way valve 78 of the cooling and heating system and evaporating the refrigerant in the indoor heat exchanger 72. At this time, the three-way valve 79 prevents the refrigerant from flowing into the indoor heat exchanger 70.

収納室102、101は冷却専用であり、冷却システムによって約3℃の冷蔵温度に保つ。従って、第2凝縮器71を用いて収納室104を冷却システムで加温する場合、収納室102、101を冷却する時に生じる廃熱を利用して効率的に加温することができる。また、凝縮器89と庫外熱交換器77は同一風路内に設置されているため、四方弁78を切り換えて収納室103、104を冷却加温システムで加温する場合、庫外熱交換器77を用いて凝縮器89で発生する冷却システムの廃熱と外気の熱を吸熱しながら効率的に収納室103、104を加温することができる。   The storage chambers 102 and 101 are exclusively for cooling, and are kept at a refrigeration temperature of about 3 ° C. by a cooling system. Therefore, when the storage chamber 104 is heated by the cooling system using the second condenser 71, the waste heat generated when the storage chambers 102 and 101 are cooled can be efficiently heated. Further, since the condenser 89 and the outside heat exchanger 77 are installed in the same air path, when the four-way valve 78 is switched and the storage chambers 103 and 104 are heated by the cooling and heating system, the outside heat exchange is performed. The storage chambers 103 and 104 can be efficiently heated while absorbing the waste heat of the cooling system and the heat of the outside air generated in the condenser 89 using the vessel 77.

以上のように構成された本発明の自動販売機について、以下その動作を説明する。   The operation of the vending machine of the present invention configured as described above will be described below.

全ての収納室101〜104を冷却する場合、冷却加温システムにおいては三方切換弁79の流路を開とし、四方弁78を冷却側に切り換えて圧縮機75を駆動する。圧縮機75から吐出された冷媒は、庫外熱交換器77で凝縮された後、一部の液冷媒を貯留するレシーバ84と三方切換弁79を経由してそれぞれ冷却用膨張機構80、81で減圧されて、室内熱交換器70、72へ供給される。   When all the storage chambers 101 to 104 are cooled, in the cooling and heating system, the flow path of the three-way switching valve 79 is opened, the four-way valve 78 is switched to the cooling side, and the compressor 75 is driven. The refrigerant discharged from the compressor 75 is condensed in the external heat exchanger 77 and then passed through the receiver 84 for storing a part of the liquid refrigerant and the three-way switching valve 79, and the cooling expansion mechanisms 80 and 81, respectively. The pressure is reduced and supplied to the indoor heat exchangers 70 and 72.

そして、室内熱交換器70、72で蒸発した冷媒が圧縮機75へ還流する。一方、冷却システムにおいては三方切換弁90と高低圧バランス弁96の流路を開とし、第2凝縮器71に冷媒が流れないように流路切換弁88を切り換えて圧縮機76を駆動する。   Then, the refrigerant evaporated in the indoor heat exchangers 70 and 72 is returned to the compressor 75. On the other hand, in the cooling system, the flow path of the three-way switching valve 90 and the high / low pressure balance valve 96 is opened, and the flow path switching valve 88 is switched so that the refrigerant does not flow to the second condenser 71 to drive the compressor 76.

圧縮機76から吐出された冷媒は、凝縮器89で凝縮された後、三方切換弁90を経由してそれぞれ冷却用膨張機構91、92で減圧されて、蒸発器73、74へ供給される。通常は冷却用膨張機構91で減圧されて蒸発器73、直列配管93を通り蒸発器74へ供給されるが、収納室102が適温になって収納室101が適温になっていない場合は収納室101のみに冷媒が流れるように三方弁90を切替えて膨張機構92で減圧して蒸発器74へ供給する。そして、蒸発器73、74で蒸発した冷媒が圧縮機76へ還流する。   The refrigerant discharged from the compressor 76 is condensed by the condenser 89, then decompressed by the cooling expansion mechanisms 91 and 92 via the three-way switching valve 90, and supplied to the evaporators 73 and 74. Normally, the pressure is reduced by the cooling expansion mechanism 91 and supplied to the evaporator 74 through the evaporator 73 and the serial pipe 93. However, when the storage chamber 102 is at the proper temperature and the storage chamber 101 is not at the proper temperature, the storage chamber is stored. The three-way valve 90 is switched so that the refrigerant flows only to 101, and the pressure is reduced by the expansion mechanism 92 and supplied to the evaporator 74. Then, the refrigerant evaporated in the evaporators 73 and 74 is returned to the compressor 76.

このとき、冷媒を循環させず使用していない第2凝縮器71はほぼ収納室104の冷蔵温度となっており、収納室104の冷蔵温度よりも低い温度となっている蒸発器73、74に第2凝縮器71は連通しているので、第2凝縮器の内部に冷媒が滞留することはない。   At this time, the second condenser 71 that does not circulate the refrigerant and is not in use is at the refrigeration temperature of the storage chamber 104, and the evaporators 73 and 74 that are at a temperature lower than the refrigeration temperature of the storage chamber 104. Since the second condenser 71 is in communication, the refrigerant does not stay inside the second condenser.

そして、収納室101〜104の内、所定の温度に達した収納室は、該当する三方切換弁79あるいは三方切換弁90の流路を閉塞して冷媒の供給を停止する。さらに、収納室103、104すべてが所定の温度に達すると圧縮機75の運転を停止し、収納室101、102すべてが所定の温度に達すると圧縮機76の運転を停止する。このとき、圧縮機76の停止と連動して高低圧バランス弁96の流路を閉塞することが望ましい。これによって、使用していない第2凝縮器71は閉塞された冷媒回路となり、その内部に冷媒が滞留しない状態を維持することができる。   Of the storage chambers 101 to 104, the storage chamber that has reached a predetermined temperature closes the flow path of the corresponding three-way switching valve 79 or three-way switching valve 90 to stop the supply of refrigerant. Further, when all the storage chambers 103 and 104 reach a predetermined temperature, the operation of the compressor 75 is stopped, and when all the storage chambers 101 and 102 reach a predetermined temperature, the operation of the compressor 76 is stopped. At this time, it is desirable to block the flow path of the high / low pressure balance valve 96 in conjunction with the stop of the compressor 76. As a result, the second condenser 71 that is not used becomes a closed refrigerant circuit, and a state in which no refrigerant stays therein can be maintained.

次に、収納室103、104を加温しながら収納室101、102を冷却する場合、冷却加温システムにおいては三方切換弁79の流路を閉塞し、四方弁78を加温側に切り換えて圧縮機75を駆動する。圧縮機75から吐出された冷媒は、室内熱交換器70、72で凝縮された後、それぞれ加温用膨張機構82、83で減圧され、逆止弁87を経由して庫外熱交換器77へ供給される。   Next, when the storage chambers 101 and 102 are cooled while heating the storage chambers 103 and 104, the flow path of the three-way switching valve 79 is closed in the cooling and heating system, and the four-way valve 78 is switched to the heating side. The compressor 75 is driven. The refrigerant discharged from the compressor 75 is condensed in the indoor heat exchangers 70 and 72, then depressurized by the heating expansion mechanisms 82 and 83, respectively, and passes through the check valve 87 to be external heat exchanger 77. Supplied to.

そして、庫外熱交換器77で蒸発した冷媒が圧縮機75へ還流する。一方、冷却システムにおいては三方切換弁90と高低圧バランス弁96の流路を開放とし、第2凝縮器71を使用しないように(冷媒が流れないように)流路切換弁88を切り換えて圧縮機76を駆動する。圧縮機76から吐出された冷媒は、凝縮器89で凝縮された後、三方切換弁90を経由してそれぞれ冷却用膨張機構91、92で減圧されて、蒸発器73、74へ供給される。そして、蒸発器73、74で蒸発した冷媒が圧縮機76へ還流する。このとき、使用していない第2凝縮器71は高温となる収納室1よりも低い温度となる蒸発器73、74に連通しており、その内部に冷媒が滞留することがない。   Then, the refrigerant evaporated in the external heat exchanger 77 returns to the compressor 75. On the other hand, in the cooling system, the flow path of the three-way switching valve 90 and the high / low pressure balance valve 96 is opened, and the flow path switching valve 88 is switched so as not to use the second condenser 71 (so that the refrigerant does not flow). The machine 76 is driven. The refrigerant discharged from the compressor 76 is condensed by the condenser 89, then decompressed by the cooling expansion mechanisms 91 and 92 via the three-way switching valve 90, and supplied to the evaporators 73 and 74. Then, the refrigerant evaporated in the evaporators 73 and 74 is returned to the compressor 76. At this time, the second condenser 71 that is not in use communicates with the evaporators 73 and 74 that are at a lower temperature than the storage chamber 1 that is at a high temperature, and the refrigerant does not stay therein.

そして、収納室103、104の内、所定の温度に達した収納室は、該当する室内熱交換器70、72の暖気を収納室103、104内へ循環する送風機31、39を停止し、収納室103、104すべてが所定の温度に達すると圧縮機75の運転を停止する。また、収納室101、102の内、所定の温度に達した収納室は、該当する三方切換弁90の流路を閉塞して冷媒の供給を停止し、収納室101、102すべてが所定の温度に達すると圧縮機76の運転を停止する。   In the storage chambers 103 and 104, the storage chamber that has reached a predetermined temperature stops the blowers 31 and 39 that circulate the warm air of the corresponding indoor heat exchangers 70 and 72 into the storage chambers 103 and 104. When all of the chambers 103 and 104 reach a predetermined temperature, the operation of the compressor 75 is stopped. In addition, the storage chambers that reach a predetermined temperature among the storage chambers 101 and 102 block the flow path of the corresponding three-way switching valve 90 to stop the supply of the refrigerant, and all of the storage chambers 101 and 102 have a predetermined temperature. , The operation of the compressor 76 is stopped.

このとき、圧縮機76の停止と連動して高低圧バランス弁96の流路を閉塞することが望ましい。これによって、第2凝縮器41は閉塞された冷媒回路となり、その内部に冷媒が滞留しない状態を維持することができる。   At this time, it is desirable to block the flow path of the high / low pressure balance valve 96 in conjunction with the stop of the compressor 76. As a result, the second condenser 41 becomes a closed refrigerant circuit and can maintain a state in which no refrigerant stays therein.

次に、収納室104を加温しながら他の収納室101〜103を冷却する場合、冷却加温システムにおいては三方切換弁79の流路の内、室内熱交換器70に冷媒が流れないように閉塞し、室内熱交換器72を開放とし、四方弁78を冷却側に切り換えて圧縮機75を駆動する。   Next, when the other storage chambers 101 to 103 are cooled while heating the storage chamber 104, in the cooling and heating system, the refrigerant does not flow into the indoor heat exchanger 70 in the flow path of the three-way switching valve 79. The indoor heat exchanger 72 is opened, the four-way valve 78 is switched to the cooling side, and the compressor 75 is driven.

圧縮機75から吐出された冷媒は、庫外熱交換器77で凝縮された後、一部の液冷媒を貯留するレシーバ49と三方切換弁45を経由して冷却用膨張機構81で減圧されて、室内熱交換器72へ供給される。そして、室内熱交換器72で蒸発した冷媒が圧縮機75へ還流する。このとき、冷媒を循環させず使用しない室内熱交換器70は高温となる収納室104よりも温度の低い室内熱交換器72に連通しており、その内部に冷媒が滞留することがない。   The refrigerant discharged from the compressor 75 is condensed by the external heat exchanger 77 and then depressurized by the cooling expansion mechanism 81 via the receiver 49 that stores a part of the liquid refrigerant and the three-way switching valve 45. , And supplied to the indoor heat exchanger 72. Then, the refrigerant evaporated in the indoor heat exchanger 72 is returned to the compressor 75. At this time, the indoor heat exchanger 70 that does not circulate the refrigerant and does not use it communicates with the indoor heat exchanger 72 that is lower in temperature than the storage chamber 104 that is at a high temperature, so that the refrigerant does not stay inside.

一方、冷却システムにおいては高低圧バランス弁96の流路を閉塞し、第2凝縮器71に冷媒が循環するように流路切換弁88を切り換えて圧縮機76を駆動する。圧縮機76から吐出された冷媒は、第2凝縮器71でその一部が凝縮され、凝縮器89で冷媒の残部が凝縮された後、三方切換弁90を経由してそれぞれ冷却用膨張機構91、92で減圧されて、蒸発器73、74へ供給される。そして、蒸発器73、74で蒸発した冷媒が圧縮機76へ還流する。   On the other hand, in the cooling system, the flow path of the high / low pressure balance valve 96 is closed, and the flow path switching valve 88 is switched so that the refrigerant circulates in the second condenser 71 to drive the compressor 76. A part of the refrigerant discharged from the compressor 76 is condensed by the second condenser 71, and the remaining part of the refrigerant is condensed by the condenser 89, and then the cooling expansion mechanism 91 via the three-way switching valve 90. , 92 and supplied to the evaporators 73 and 74. Then, the refrigerant evaporated in the evaporators 73 and 74 is returned to the compressor 76.

このとき、冷却システムには使用しない配管経路はなく、冷媒が無駄に滞留することがない。なお、圧縮機76から吐出された冷媒は、第2凝縮器71と凝縮器89の両方で凝縮するため、凝縮能力が過多にならないように、凝縮器89と庫外熱交換器77に外気を供給する送風機48の風量を低下させることが望ましい。   At this time, there is no pipe path not used in the cooling system, and the refrigerant does not stay wastefully. The refrigerant discharged from the compressor 76 condenses in both the second condenser 71 and the condenser 89, so that outside air is supplied to the condenser 89 and the external heat exchanger 77 so that the condensation capacity does not become excessive. It is desirable to reduce the air volume of the blower 48 to be supplied.

そして、収納室103が所定の温度に達すると圧縮機75の運転を停止する。収納室104が所定の温度に達すると、第2凝縮器71に冷媒が循環しないように流路切換弁88を切り換えるとともに、高低圧バランス弁43を開放とし、第2凝縮器71内に滞留する冷媒を回収する。   Then, when the storage chamber 103 reaches a predetermined temperature, the operation of the compressor 75 is stopped. When the storage chamber 104 reaches a predetermined temperature, the flow path switching valve 88 is switched so that the refrigerant does not circulate in the second condenser 71, and the high / low pressure balance valve 43 is opened to stay in the second condenser 71. Collect the refrigerant.

また、収納室102、101の内、所定の温度に達した収納室は、該当する三方切換弁90の流路を閉塞して冷媒の供給を停止し、すべての室が所定の温度に達すると圧縮機76の運転を停止する。このとき、収納室104が所定の温度より乖離が大きいまま、収納室101〜103すべてが所定の温度に達した場合は、電気ヒータ(図示せず)を用いて収納室104を加温してもよい。収納室104が冷却設定から加温設定に切り換えた直後などは、収納室101、102を冷却する時に生じる凝縮器89での排熱よりも収納室104の熱負荷の方が大きくなるため、電気ヒータ(図示せず)を用いることで収納室104の販売開始を早めることができる。   Further, among the storage chambers 102 and 101, the storage chamber that has reached a predetermined temperature closes the flow path of the corresponding three-way switching valve 90 to stop the supply of the refrigerant, and when all the chambers reach the predetermined temperature. The operation of the compressor 76 is stopped. At this time, if all of the storage chambers 101 to 103 reach the predetermined temperature while the storage chamber 104 is far from the predetermined temperature, the storage chamber 104 is heated using an electric heater (not shown). Also good. Immediately after the storage chamber 104 is switched from the cooling setting to the heating setting, the thermal load of the storage chamber 104 becomes larger than the exhaust heat in the condenser 89 that is generated when the storage chambers 101 and 102 are cooled. By using a heater (not shown), the sales start of the storage chamber 104 can be accelerated.

以上のように、本発明の自動販売機においては収納室103、104を加温する際に、庫外熱交換器77を用いて凝縮器89で発生する冷却システムの排熱と外気の熱を吸熱することで収納室103、104を効率よく加温することができるとともに、収納室104のみを加温する場合でも、冷却加温システムを冷却運転に切り換えることで加温システムを稼動するために必要な冷媒量を確保して加温システムの著しい効率低下を防止することができるとともに、冷却システムの第2凝縮器を用いて加温することで加温効率の著しい低下を防止することができるので、電気ヒータなどの別の加熱手段を用いて収納室を加温する場合に比べて、消費電力量を削減することができる。   As described above, in the vending machine of the present invention, when the storage chambers 103 and 104 are heated, the exhaust heat of the cooling system and the heat of the outside air generated in the condenser 89 using the external heat exchanger 77 are used. The storage chambers 103 and 104 can be efficiently heated by absorbing heat, and even when only the storage chamber 104 is heated, the heating and heating system is operated by switching the cooling and heating system to the cooling operation. The required amount of refrigerant can be secured to prevent a significant decrease in efficiency of the heating system, and the heating system can be heated using the second condenser to prevent a significant decrease in heating efficiency. Therefore, the amount of power consumption can be reduced as compared with the case where the storage chamber is heated using another heating means such as an electric heater.

以上のように、本発明にかかる自動販売機は、複数の収納室を効率的に加温あるいは冷却することが可能であると共に、加温に使用しない室内熱交換器への冷媒滞留による効率低下を防止できるので、ホット飲料とコールド飲料を切り換えて保存するショーケースなどの加温および冷却運転時の省エネルギー化が要求される用途にも適用できる。   As described above, the vending machine according to the present invention can efficiently heat or cool a plurality of storage chambers, and the efficiency decreases due to the refrigerant remaining in the indoor heat exchanger that is not used for heating. Therefore, it can also be applied to applications that require energy saving during heating and cooling operations such as showcases that switch between hot drinks and cold drinks.

本発明の実施の形態1における自動販売機本体の正面図The front view of the vending machine main body in Embodiment 1 of this invention 図1のA−A断面図AA sectional view of FIG. 本発明の実施の形態1における自動販売機の冷媒回路図Refrigerant circuit diagram of vending machine in Embodiment 1 of the present invention 本発明の実施の形態2における自動販売機の冷媒回路図Refrigerant circuit diagram of vending machine in Embodiment 2 of the present invention 従来の自動販売機の冷媒回路図Refrigerant circuit diagram of a conventional vending machine

符号の説明Explanation of symbols

20 自動販売機本体
21,22,23,24 収納室
29 凝縮器(第1室内熱交換器)
30,34,37,38,73,74 蒸発器
33 凝縮器(第2室内熱交換器)
42 機械室
43,75 インバータ圧縮機(圧縮機)
44,76 圧縮機
51,53,82,83 加温用膨張機構
52,54 逆止弁
55,56 高低圧バランス弁(弁機構)
71 第2凝縮器(室内凝縮器)
96 高低圧バランス弁(弁機構)
20 Vending machine body 21, 22, 23, 24 Storage room 29 Condenser (first indoor heat exchanger)
30, 34, 37, 38, 73, 74 Evaporator 33 Condenser (second indoor heat exchanger)
42 Machine room 43,75 Inverter compressor (compressor)
44, 76 Compressor 51, 53, 82, 83 Warming expansion mechanism 52, 54 Check valve 55, 56 High / low pressure balance valve (valve mechanism)
71 Second condenser (indoor condenser)
96 High / low pressure balance valve (valve mechanism)

Claims (7)

上部に商品を収納する複数の収納室、下部に機械室を有し、前記収納室内の下方に冷却システムの蒸発器、加温システムの室内熱交換器を配置し、前記機械室内に前記蒸発器に接続する凝縮器および圧縮機と、前記室内熱交換器に接続する室外熱交換器および圧縮機とを有し、前記冷却システムと前記加温システムとを独立して備えた自動販売機において、前記加温システムは前記複数の収納室にそれぞれ第1室内熱交換器と第2室内熱交換器を分岐配管して配置し、第1収納室内に少なくとも前記第1室内熱交換器を配置し、第2収納室内に冷却システムの蒸発器と前記第2室内熱交換器とを配置し、前記第1収納室は前記加温システムの圧縮機駆動で前記第1室内熱交換器によって加温され、前記第2収納室は前記冷却システムの圧縮機駆動で前記蒸発器によって冷却し、前記第2収納室を冷却運転している期間中に、使用しない前記第2室内熱交換器内に冷媒が滞留しないように、前記第2室内熱交換器の下流側に逆止弁を接続して前記加温システムを構成したことを特徴とする自動販売機。   There are a plurality of storage chambers for storing products in the upper part, a machine room in the lower part, an evaporator for a cooling system and an indoor heat exchanger for a heating system are arranged below the storage room, and the evaporator is placed in the machine room A vending machine having a condenser and a compressor connected to the outdoor heat exchanger and a compressor connected to the indoor heat exchanger, the cooling system and the heating system being independently provided; In the heating system, the first indoor heat exchanger and the second indoor heat exchanger are arranged by branch piping in the plurality of storage chambers, respectively, and at least the first indoor heat exchanger is arranged in the first storage chamber, A cooling system evaporator and the second indoor heat exchanger are disposed in a second storage chamber, and the first storage chamber is heated by the first indoor heat exchanger by driving a compressor of the heating system, The second storage chamber is a compressor of the cooling system So that the refrigerant does not stay in the second indoor heat exchanger that is not used during the cooling operation of the second storage chamber. A vending machine characterized in that the heating system is configured by connecting a check valve downstream. 逆止弁に高低圧バランス弁を並列接続し、前記高低圧バランス弁を開放することで室内熱交換器に滞留した冷媒を加温システムの圧縮機に回収することを特徴とする請求項1に記載の自動販売機。   The high-low pressure balance valve is connected in parallel to the check valve, and the high-low pressure balance valve is opened to recover the refrigerant accumulated in the indoor heat exchanger to the compressor of the heating system. The vending machine described. 加温システムの圧縮機の回転数を高めることで、前記加温システムの室外熱交換器の温度を、使用しない第2室内熱交換器の温度よりも低い蒸発温度に保つことを特徴とする請求項1または2に記載の自動販売機。   The temperature of the outdoor heat exchanger of the heating system is maintained at an evaporation temperature lower than the temperature of the second indoor heat exchanger that is not used by increasing the number of revolutions of the compressor of the heating system. Item 3. A vending machine according to item 1 or 2. 加温用膨張機構を絞って、加温システムの室外熱交換器の温度を、使用しない第2室内熱交換器の温度よりも低い蒸発温度に保つことを特徴とする請求項1または2に記載の自動販売機。   The expansion mechanism for heating is narrowed down, and the temperature of the outdoor heat exchanger of the heating system is kept at an evaporation temperature lower than the temperature of the second indoor heat exchanger that is not used. Vending machine. 上部に商品を収納する複数の収納室、下部に機械室を有し、前記収納室内の下方に冷却システムの蒸発器、冷却加温システムの室内熱交換器を配置し、前記機械室内に前記蒸発器に接続する凝縮器および圧縮機と、前記室内熱交換器に接続する室外熱交換器および圧縮機とを有し、前記冷却システムと前記冷却加温システムとを独立して備えた自動販売機において、前記冷却加温システムは第1収納室および第2収納室にそれぞれ第1室内熱交換器と第2室内熱交換器を分岐配管して配置し、冷媒流路を切替ることで第1収納室および第2収納室を冷却または加温可能に構成され、前記冷却システムの蒸発器は冷却専用室に、前記冷却システムの室内凝縮器を前記第2収納室に有し、前記蒸発器の戻り配管と前記室内凝縮器の下流側配管とを開閉可能な弁機構を介して接続したことを特徴とする自動販売機。   There are a plurality of storage chambers for storing products in the upper part, a machine room in the lower part, an evaporator for the cooling system and an indoor heat exchanger for the cooling and heating system are arranged below the storage room, and the evaporation is in the machine room. A vending machine having a condenser and a compressor connected to a condenser, and an outdoor heat exchanger and a compressor connected to the indoor heat exchanger, and independently including the cooling system and the cooling and heating system In the cooling and heating system, the first indoor heat exchanger and the second indoor heat exchanger are branched and arranged in the first storage chamber and the second storage chamber, respectively, and the refrigerant flow path is switched to change the first. The storage chamber and the second storage chamber can be cooled or heated, the evaporator of the cooling system is provided in a cooling-dedicated chamber, the indoor condenser of the cooling system is provided in the second storage chamber, and the evaporator The return pipe and the downstream pipe of the indoor condenser Vending machine, characterized in that connected through the closed possible valve mechanism. 第2収納室が第2室内熱交換器の蒸発作用によって冷却されている場合、室内凝縮器は不使用状態であり、前記室内凝縮器に接続された弁機構を常に開放することを特徴とする請求項5に記載の自動販売機。   When the second storage chamber is cooled by the evaporation action of the second indoor heat exchanger, the indoor condenser is in an unused state, and the valve mechanism connected to the indoor condenser is always opened. The vending machine according to claim 5. 加温システムあるいは冷却加温システムに使用されている冷媒は可燃性冷媒であることを特徴とする請求項1から6のいずれか一項に記載の自動販売機。   The vending machine according to any one of claims 1 to 6, wherein the refrigerant used in the heating system or the cooling and heating system is a combustible refrigerant.
JP2007205307A 2007-08-07 2007-08-07 vending machine Expired - Fee Related JP5157307B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007205307A JP5157307B2 (en) 2007-08-07 2007-08-07 vending machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007205307A JP5157307B2 (en) 2007-08-07 2007-08-07 vending machine

Publications (2)

Publication Number Publication Date
JP2009042886A true JP2009042886A (en) 2009-02-26
JP5157307B2 JP5157307B2 (en) 2013-03-06

Family

ID=40443590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007205307A Expired - Fee Related JP5157307B2 (en) 2007-08-07 2007-08-07 vending machine

Country Status (1)

Country Link
JP (1) JP5157307B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010244171A (en) * 2009-04-02 2010-10-28 Fuji Electric Retail Systems Co Ltd Vending machine
JP2010244170A (en) * 2009-04-02 2010-10-28 Fuji Electric Retail Systems Co Ltd Vending machine
JP2010272039A (en) * 2009-05-25 2010-12-02 Panasonic Corp Vending machine
KR101102701B1 (en) 2009-03-06 2012-01-05 후지 덴키 리테일 시스템즈 가부시키가이샤 Vending machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0737149A (en) * 1993-01-21 1995-02-07 Fuji Electric Co Ltd Automatic vending machine
JPH07160937A (en) * 1993-12-07 1995-06-23 Sharp Corp Automatic vending machine
JP2001034829A (en) * 1999-07-23 2001-02-09 Fuji Electric Co Ltd Cooling device for automatic vending machine
JP2004145516A (en) * 2002-10-23 2004-05-20 Matsushita Refrig Co Ltd Cooling/heating device for vending machine
JP2004182203A (en) * 2002-12-06 2004-07-02 Mitsubishi Heavy Ind Ltd Control method of vehicular air conditioner and vehicular air conditioner
JP2005227831A (en) * 2004-02-10 2005-08-25 Matsushita Electric Ind Co Ltd Vending machine
JP2005301654A (en) * 2004-04-12 2005-10-27 Fuji Electric Holdings Co Ltd Vending machine
JP2007102680A (en) * 2005-10-07 2007-04-19 Matsushita Electric Ind Co Ltd Automatic vending machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0737149A (en) * 1993-01-21 1995-02-07 Fuji Electric Co Ltd Automatic vending machine
JPH07160937A (en) * 1993-12-07 1995-06-23 Sharp Corp Automatic vending machine
JP2001034829A (en) * 1999-07-23 2001-02-09 Fuji Electric Co Ltd Cooling device for automatic vending machine
JP2004145516A (en) * 2002-10-23 2004-05-20 Matsushita Refrig Co Ltd Cooling/heating device for vending machine
JP2004182203A (en) * 2002-12-06 2004-07-02 Mitsubishi Heavy Ind Ltd Control method of vehicular air conditioner and vehicular air conditioner
JP2005227831A (en) * 2004-02-10 2005-08-25 Matsushita Electric Ind Co Ltd Vending machine
JP2005301654A (en) * 2004-04-12 2005-10-27 Fuji Electric Holdings Co Ltd Vending machine
JP2007102680A (en) * 2005-10-07 2007-04-19 Matsushita Electric Ind Co Ltd Automatic vending machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101102701B1 (en) 2009-03-06 2012-01-05 후지 덴키 리테일 시스템즈 가부시키가이샤 Vending machine
JP2010244171A (en) * 2009-04-02 2010-10-28 Fuji Electric Retail Systems Co Ltd Vending machine
JP2010244170A (en) * 2009-04-02 2010-10-28 Fuji Electric Retail Systems Co Ltd Vending machine
JP2010272039A (en) * 2009-05-25 2010-12-02 Panasonic Corp Vending machine

Also Published As

Publication number Publication date
JP5157307B2 (en) 2013-03-06

Similar Documents

Publication Publication Date Title
KR101391775B1 (en) Heat pump system
EP2261570B1 (en) Refrigerating apparatus
KR101638675B1 (en) Combined binary refrigeration cycle apparatus
JP5166385B2 (en) Air conditioning and hot water supply system
KR101196505B1 (en) Heat pump using two stage compressors
ES2807850T3 (en) Compressor capacity switching procedure
JP5157307B2 (en) vending machine
JP2001099514A (en) Heat storage type air-conditioning and refrigerating device
JP2012123786A (en) Automatic vending machine
JP2013089209A (en) Automatic vending machine
JPWO2010109619A1 (en) Load-side relay unit and combined air conditioning and hot water supply system
JP5216557B2 (en) Refrigeration cycle equipment
JP6653443B2 (en) Outdoor unit of air conditioner
JP2011106718A (en) Heat pump chiller
JP2006038306A (en) Freezer
JP4169638B2 (en) Refrigeration system
JP5333557B2 (en) Hot water supply air conditioning system
JP6506033B2 (en) Heat pump device and vending machine provided with the same
JP2013084073A (en) Automatic vending machine
JP5517131B2 (en) Thermal storage air conditioner
JP5418037B2 (en) vending machine
JP2002174465A (en) Refrigerating apparatus
JP2004028576A (en) Air conditioning refrigerating device
JP6678333B2 (en) Outdoor unit of air conditioner
JP6572444B2 (en) vending machine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100727

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20100806

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120823

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120911

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20121001

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121113

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121126

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151221

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees