JPWO2018142567A1 - Air conditioner - Google Patents

Air conditioner Download PDF

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JPWO2018142567A1
JPWO2018142567A1 JP2018565192A JP2018565192A JPWO2018142567A1 JP WO2018142567 A1 JPWO2018142567 A1 JP WO2018142567A1 JP 2018565192 A JP2018565192 A JP 2018565192A JP 2018565192 A JP2018565192 A JP 2018565192A JP WO2018142567 A1 JPWO2018142567 A1 JP WO2018142567A1
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flow path
condenser
heat transfer
refrigerant
row
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JP6707152B2 (en
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友博 永野
和彦 河合
裕右 小山
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/38—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being staggered to form tortuous fluid passages

Abstract

空気調和装置は、凝縮器と蒸発器とが配管で接続され、凝縮器と蒸発器との間を冷媒が循環する冷媒回路を備え、凝縮器は、千鳥配置された複数の伝熱管を有し、液冷媒を一方の外側の列に配置された伝熱管から他方の外側の列へ配置された伝熱管へ導く第１流路と、液冷媒を他方の外側の列に配置された伝熱管から一方の列に配置された伝熱管へ導く第２流路とで構成される冷媒の流路を有し、流路は、上段の伝熱管に形成された流入口から下段の伝熱管に形成された流出口に至るまで、第１流路と第２流路とが交互に形成されているものであり、第１流路および第２流路は、上流側から下流側に向かって下方に傾いているものである。The air conditioner includes a refrigerant circuit in which a condenser and an evaporator are connected by piping, and a refrigerant circulates between the condenser and the evaporator. The condenser has a plurality of heat transfer tubes arranged in a staggered manner. A first flow path that guides the liquid refrigerant from the heat transfer tubes arranged in one outer row to the heat transfer tubes arranged in the other outer row, and a heat transfer tube arranged in the other outer row The refrigerant flow path includes a second flow path that leads to the heat transfer tubes arranged in one row, and the flow paths are formed from the inlet formed in the upper heat transfer tube to the lower heat transfer tube. The first flow path and the second flow path are alternately formed until reaching the outlet, and the first flow path and the second flow path are inclined downward from the upstream side toward the downstream side. It is what.

Description

本発明は、空気調和装置に関し、特に凝縮器の構造に関するものである。   The present invention relates to an air conditioner, and more particularly to a structure of a condenser.

自然循環式の空気調和装置に用いられる凝縮器において、伝熱管が複数折り返されて冷媒の流路が形成されているものがある（例えば、特許文献１参照）。   In some condensers used in natural circulation type air conditioners, a plurality of heat transfer tubes are folded to form a refrigerant flow path (see, for example, Patent Document 1).

実公昭６１−３３４２８号公報Japanese Utility Model Publication No. 61-33428

従来、設置スペースが広くない場所に凝縮器を設置したいような場合、凝縮器を鉛直方向に対して傾けて設置することが考えられる。しかし、特許文献１に記載の凝縮器を鉛直方向に対して傾けて設置すると伝熱管の折り返された部分がトラップとなり、伝熱管によって形成された流路を液冷媒が流れにくくなって、液冷媒が凝縮器に滞留してしまうという課題があった。   Conventionally, when it is desired to install a condenser in a place where the installation space is not wide, it is conceivable to install the condenser by tilting it with respect to the vertical direction. However, when the condenser described in Patent Document 1 is installed to be inclined with respect to the vertical direction, the folded portion of the heat transfer tube becomes a trap, and the liquid refrigerant becomes difficult to flow through the flow path formed by the heat transfer tube. There was a problem that would stay in the condenser.

本発明は、以上のような課題を解決するためになされたもので、凝縮器を鉛直方向に対して傾けて設置しても、液冷媒が凝縮器に滞留するのを抑制することができる空気調和装置を提供することを目的としている。   The present invention has been made in order to solve the above-described problems. Even when the condenser is installed at an angle with respect to the vertical direction, the air that can suppress the liquid refrigerant from staying in the condenser is provided. It aims to provide a harmony device.

本発明に係る空気調和装置は、凝縮器と蒸発器とが配管で接続され、前記凝縮器と前記蒸発器との間を冷媒が循環する冷媒回路を備え、前記凝縮器は、千鳥配置された複数の伝熱管を有し、液冷媒を一方の外側の列に配置された前記伝熱管から他方の外側の列へ配置された前記伝熱管へ導く第１流路と、液冷媒を前記他方の外側の列に配置された前記伝熱管から前記一方の列に配置された前記伝熱管へ導く第２流路とで構成される冷媒の流路を有し、前記流路は、上段の前記伝熱管に形成された流入口から下段の前記伝熱管に形成された流出口に至るまで、前記第１流路と前記第２流路とが交互に形成されているものであり、前記第１流路および前記第２流路は、上流側から下流側に向かって下方に傾いているものである。   An air conditioner according to the present invention includes a refrigerant circuit in which a condenser and an evaporator are connected by piping, and a refrigerant circulates between the condenser and the evaporator. The condenser is arranged in a staggered manner. A first flow path having a plurality of heat transfer tubes, and leading the liquid refrigerant from the heat transfer tubes arranged in one outer row to the heat transfer tubes arranged in the other outer row; A refrigerant flow path composed of a second flow path that leads from the heat transfer tubes arranged in the outer row to the heat transfer tubes arranged in the one row, and the flow passage is in the upper stage. From the inlet formed in the heat pipe to the outlet formed in the lower heat transfer pipe, the first flow path and the second flow path are alternately formed, and the first flow The path and the second flow path are inclined downward from the upstream side toward the downstream side.

本発明に係る空気調和装置によれば、凝縮器は、千鳥配置された複数の伝熱管を有し、液冷媒を一方の外側の列に配置された伝熱管から他方の外側の列へ配置された伝熱管へ導く第１流路と、液冷媒を他方の外側の列に配置された伝熱管から一方の列に配置された伝熱管へ導く第２流路とで構成される冷媒の流路を有し、その流路は、上段の伝熱管に形成された流入口から下段の伝熱管に形成された流出口に至るまで、第１流路と第２流路とが交互に形成されているものであり、第１流路および第２流路は、上流側から下流側に向かって下方に傾いている。そのため、凝縮器を鉛直方向に対して傾けて設置しても、液冷媒が凝縮器に滞留するのを抑制することができる。   According to the air conditioner according to the present invention, the condenser has a plurality of heat transfer tubes arranged in a staggered manner, and the liquid refrigerant is arranged from the heat transfer tube arranged in one outer row to the other outer row. The refrigerant flow path is composed of a first flow path that leads to the heat transfer pipe and a second flow path that leads the liquid refrigerant from the heat transfer pipe arranged in the other outer row to the heat transfer pipe arranged in one row. The flow path is formed by alternately forming the first flow path and the second flow path from the inflow port formed in the upper heat transfer tube to the outflow port formed in the lower heat transfer tube. The first flow path and the second flow path are inclined downward from the upstream side toward the downstream side. Therefore, even if the condenser is installed at an angle with respect to the vertical direction, the liquid refrigerant can be prevented from staying in the condenser.

本発明の実施の形態１に係る空気調和装置の冷媒回路を示す図である。It is a figure which shows the refrigerant circuit of the air conditioning apparatus which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る空気調和装置の室外機の構造を示す模式図である。It is a schematic diagram which shows the structure of the outdoor unit of the air conditioning apparatus which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る空気調和装置の凝縮器を説明する図である。It is a figure explaining the condenser of the air conditioning apparatus which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る空気調和装置の冷媒回路を示す図である。It is a figure which shows the refrigerant circuit of the air conditioning apparatus which concerns on Embodiment 2 of this invention. 本発明の実施の形態２に係る空気調和装置の室外機の構造を示す模式図である。It is a schematic diagram which shows the structure of the outdoor unit of the air conditioning apparatus which concerns on Embodiment 2 of this invention. 本発明の実施の形態２に係る空気調和装置の凝縮器を説明する図である。It is a figure explaining the condenser of the air conditioning apparatus which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る空気調和装置の冷媒回路を示す図である。It is a figure which shows the refrigerant circuit of the air conditioning apparatus which concerns on Embodiment 3 of this invention.

以下、本発明の実施の形態を図面に基づいて説明する。なお、以下に説明する実施の形態によって本発明が限定されるものではない。また、以下の図面では各構成部材の大きさの関係が実際のものとは異なる場合がある。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Moreover, in the following drawings, the relationship of the size of each component may be different from the actual one.

実施の形態１．
図１は、本発明の実施の形態１に係る空気調和装置の冷媒回路を示す図である。なお、図１中の矢印は冷媒の流れを示している。
本実施の形態１に係る空気調和装置は、自然循環式であり、図１に示すように、屋外に設置される凝縮器１と、屋内に設置される蒸発器３とを備えている。また、本実施の形態１に係る空気調和装置は、凝縮器１と蒸発器３とが液管２およびガス管４で接続され、凝縮器１と蒸発器３との間を冷媒が循環する冷媒回路を備えている。Embodiment 1 FIG.
1 is a diagram illustrating a refrigerant circuit of an air-conditioning apparatus according to Embodiment 1 of the present invention. In addition, the arrow in FIG. 1 has shown the flow of the refrigerant | coolant.
The air conditioner according to Embodiment 1 is a natural circulation type, and includes a condenser 1 installed outdoors and an evaporator 3 installed indoors, as shown in FIG. Further, in the air conditioner according to Embodiment 1, the condenser 1 and the evaporator 3 are connected by the liquid pipe 2 and the gas pipe 4, and the refrigerant circulates between the condenser 1 and the evaporator 3. It has a circuit.

図２は、本発明の実施の形態１に係る空気調和装置の室外機１０の構造を示す模式図である。なお、図２中の矢印は空気の流れを示している。
図２に示すように、本実施の形態１に係る凝縮器１は、室外機１０の内部に設けられており、蒸発器３は、室内機（図示せず）の内部に設けられている。室外機１０は、外郭を構成し、上部には吹き出し口１３が形成され、下部には吸い込み口１２が形成された筐体１１と、筐体１１の内部に鉛直方向に対して傾いて設置された凝縮器１と、凝縮器１と吹き出し口１３との間の２次風路側に設置された送風機１４と、を備えている。FIG. 2 is a schematic diagram showing the structure of the outdoor unit 10 of the air-conditioning apparatus according to Embodiment 1 of the present invention. In addition, the arrow in FIG. 2 has shown the flow of air.
As shown in FIG. 2, the condenser 1 according to the first embodiment is provided inside an outdoor unit 10, and the evaporator 3 is provided inside an indoor unit (not shown). The outdoor unit 10 constitutes an outer shell, and a casing 11 in which a blow-out port 13 is formed in the upper part and a suction port 12 is formed in the lower part, and the interior of the casing 11 is inclined with respect to the vertical direction. And a blower 14 installed on the secondary air passage side between the condenser 1 and the outlet 13.

図３は、本発明の実施の形態１に係る空気調和装置の凝縮器１を説明する図である。なお、図３の右側は、凝縮器１の一部を拡大した図である。また、その拡大した図中の矢印は冷媒の流れを示している。   FIG. 3 is a diagram illustrating the condenser 1 of the air-conditioning apparatus according to Embodiment 1 of the present invention. The right side of FIG. 3 is an enlarged view of a part of the condenser 1. Moreover, the arrow in the enlarged figure has shown the flow of the refrigerant | coolant.

図３に示すように、凝縮器１は、フィンチューブ型であり、後述するヘアピン管１６ａの直線部分が４列に千鳥配置されている。この凝縮器１は、同じ方向に複数積層された板状フィン１５と、板状フィン１５の貫通穴（図示せず）に挿通されるヘアピン管１６ａと、板状フィン１５の外側において隣接するヘアピン管１６ａの端部同士を連結する第１Ｕ字管１６ｂと、一方の外側の列である第１列（図３の紙面左側）に配置されたヘアピン管１６ａの端部と他方の外側の列である第４列（図３の紙面右側）に配置されたヘアピン管１６ａの端部とを連結する第２Ｕ字管１６ｃとで構成されている。   As shown in FIG. 3, the condenser 1 is a fin tube type, and straight portions of hairpin tubes 16 a described later are staggered in four rows. The condenser 1 includes a plurality of plate-like fins 15 stacked in the same direction, a hairpin tube 16 a inserted into a through hole (not shown) of the plate-like fins 15, and a hairpin adjacent to the outside of the plate-like fins 15. The first U-shaped tube 16b that connects the ends of the tube 16a, and the end of the hairpin tube 16a arranged in the first row (the left side of FIG. 3) that is one outer row and the other outer row The second U-shaped tube 16c is connected to the end of the hairpin tube 16a arranged in a certain fourth row (right side in FIG. 3).

なお、ヘアピン管１６ａの直線部分は、本発明の「伝熱管」に相当する。また、本実施の形態１では、凝縮器１の構成要素としてヘアピン管１６ａを用いたが、ヘアピン管１６ａを直線形状の伝熱管と第１Ｕ字管１６ｂとで構成し、それを用いてもよい。   The straight portion of the hairpin tube 16a corresponds to the “heat transfer tube” of the present invention. In the first embodiment, the hairpin tube 16a is used as a component of the condenser 1. However, the hairpin tube 16a may be configured by a linear heat transfer tube and the first U-shaped tube 16b. .

第２Ｕ字管１６ｃは、上記の通り、第１列に配置されたヘアピン管１６ａの端部と第４列に配置されたヘアピン管１６ａの端部とを連結するが、第１列に配置されたヘアピン管１６ａの端部の方が第４列に配置されたヘアピン管１６ａの端部よりも３段下に配置されている。つまり、第２Ｕ字管１６ｃは、第４列に配置されたヘアピン管１６ａの端部と、第１列に配置されたヘアピン管１６ａの端部のうち第４列に配置されたヘアピン管１６ａの端部よりも３段下の端部とを連結する。   As described above, the second U-shaped tube 16c connects the end of the hairpin tube 16a arranged in the first row and the end of the hairpin tube 16a arranged in the fourth row, but is arranged in the first row. The end portion of the hairpin tube 16a is arranged three steps below the end portion of the hairpin tube 16a arranged in the fourth row. In other words, the second U-shaped tube 16c has the end of the hairpin tube 16a arranged in the fourth row and the end of the hairpin tube 16a arranged in the first row of the hairpin tube 16a arranged in the fourth row. The end part three steps below the end part is connected.

凝縮器１内を流れる冷媒の流路は、ヘアピン管１６ａおよび第１Ｕ字管１６ｂにより形成され、液冷媒を第１列から第４列へ導く第１流路と、第２Ｕ字管１６ｃにより形成され、液冷媒を第４列から第１列へ導く第２流路とで構成されている。そして、その冷媒の流路は、第１列の上段に形成された流入口（図示せず）から第４列の下段に形成された流出口（図示せず）に至るまで、第１流路と第２流路とが交互に形成されている。   The flow path of the refrigerant flowing in the condenser 1 is formed by the hairpin tube 16a and the first U-shaped tube 16b, and is formed by the first flow path for guiding the liquid refrigerant from the first row to the fourth row and the second U-shaped tube 16c. And a second flow path for guiding the liquid refrigerant from the fourth row to the first row. And the flow path of the refrigerant | coolant is a 1st flow path from the inflow port (not shown) formed in the upper stage of the 1st row to the outflow port (not shown) formed in the lower stage of the 4th row. And the second flow path are alternately formed.

第１流路の上流側である第１列に配置されたヘアピン管１６ａの端部は、第１流路の下流側である第４列に配置されたヘアピン管１６ａの端部よりも上側に配置されている。また、第２流路の上流側である第４列に配置されたヘアピン管１６ａの端部は、第２流路の下流側である第１列に配置されたヘアピン管１６ａの端部よりも上側に配置されている。そのため、第１流路および第２流路は、上流側から下流側に向かって下方に傾いており、冷媒の流路は、液冷媒が流れやすい構造となっている。   The end portion of the hairpin tube 16a arranged in the first row that is upstream of the first flow path is above the end portion of the hairpin tube 16a that is arranged in the fourth row that is downstream of the first flow path. Has been placed. Moreover, the edge part of the hairpin pipe | tube 16a arrange | positioned in the 4th row | line | column which is an upstream of a 2nd flow path is rather than the edge part of the hairpin pipe | tube 16a arrange | positioned in the 1st line | column which is a downstream of a 2nd flow path. It is arranged on the upper side. Therefore, the first flow path and the second flow path are inclined downward from the upstream side toward the downstream side, and the refrigerant flow path has a structure in which the liquid refrigerant can easily flow.

また、冷媒の流路は３つ並列に形成されており、１つ目の冷媒の流路は第１＋３ｘ段目の第１流路を流れ、２つ目の冷媒の流路は第２＋３ｘ段目の第１流路を流れ、３つ目の冷媒の流路は第３＋３ｘ段目の第１流路を流れる。なお、ｘ＝０、１、２、３・・・である。   Also, three refrigerant flow paths are formed in parallel, the first refrigerant flow path flows through the first + 3x stage first flow path, and the second refrigerant flow path is the second + 3x stage. The third refrigerant flow path flows through the first flow path of the 3 + 3xth stage. Note that x = 0, 1, 2, 3,...

つまり、例えば、第１段目の第１流路を流れる液冷媒は、ヘアピン管１６ａおよび第１Ｕ字管１６ｂを通過して第１列の第１段から第４列の第１段目に到達した後、第２Ｕ字管１６ｃを通過して第１列の前記第１段目よりも３段下の第４段目に到達する。その後、第４段目の第１流路を流れる液冷媒は、ヘアピン管１６ａおよび第１Ｕ字管１６ｂを通過して第１列の第４段目から第４列の第４段目に到達した後、第２Ｕ字管１６ｃを通過して第１列の前記第４段目よりも３段下の第７段目に到達する。以後、液冷媒は、流出口に至るまでこの流れを繰り返す。   That is, for example, the liquid refrigerant flowing through the first flow path of the first stage passes through the hairpin tube 16a and the first U-shaped pipe 16b and reaches the first stage of the fourth row from the first row of the first row. After that, it passes through the second U-shaped tube 16c and reaches the fourth stage, which is three stages below the first stage in the first row. Thereafter, the liquid refrigerant flowing through the fourth flow path of the first flow path passes through the hairpin tube 16a and the first U-shaped tube 16b and reaches the fourth row of the fourth row from the fourth row of the first row. After that, it passes through the second U-shaped tube 16c and reaches the seventh stage, which is three stages lower than the fourth stage in the first row. Thereafter, the liquid refrigerant repeats this flow until it reaches the outlet.

図３に示す角度αは、第２Ｕ字管１６ｃと水平方向との角度、つまり第２流路と水平方向との角度であり、図３に示す角度βは、ヘアピン管１６ａおよび第１Ｕ字管１６ｂと水平方向との角度、つまり第１流路と水平方向との角度である。   3 is the angle between the second U-shaped tube 16c and the horizontal direction, that is, the angle between the second flow path and the horizontal direction, and the angle β illustrated in FIG. 3 is the hairpin tube 16a and the first U-shaped tube. The angle between 16b and the horizontal direction, that is, the angle between the first flow path and the horizontal direction.

凝縮器１は、室外機１０の筐体１１の内部において、鉛直方向に対する傾きＬが０≦Ｌ＜αまたはβ＜Ｌ≦０、つまりβ＜Ｌ＜αとなるように設置されている。ここで、凝縮器１は、段ピッチＤｐ＝２０．４ｍｍ、列ピッチＬｐ＝１７．７ｍｍの千鳥配列を有しており、α＝３０°、β＝−３０°である。   The condenser 1 is installed in the casing 11 of the outdoor unit 10 such that the inclination L with respect to the vertical direction is 0 ≦ L <α or β <L ≦ 0, that is, β <L <α. Here, the condenser 1 has a staggered arrangement with a stage pitch Dp = 20.4 mm and a row pitch Lp = 17.7 mm, and α = 30 ° and β = −30 °.

凝縮器１が、室外機１０の筐体１１の内部において、β＜Ｌ＜αとなるように設置されることで、第１流路および第２流路が水平方向とならず、第１流路および第２流路を下方に傾けることができる。そのため、凝縮器１を鉛直方向に対して傾けて設置しても、液冷媒が流れにくくなって凝縮器１に滞留するのを抑制することができる。   Since the condenser 1 is installed in the housing 11 of the outdoor unit 10 so that β <L <α, the first flow path and the second flow path do not become horizontal, and the first flow The path and the second flow path can be tilted downward. Therefore, even if the condenser 1 is installed to be inclined with respect to the vertical direction, the liquid refrigerant is less likely to flow and can be prevented from staying in the condenser 1.

次に、凝縮器１の動作について説明する。
屋外温度＜屋内温度である条件において、凝縮器１は、蒸発器３でガス化し、ガス管４を通過したガス冷媒を、凝縮して液冷媒にする。この凝縮器１は、室外機１０の筐体１１の内部において鉛直方向に対して傾いて設置されているため、冷媒の流路にトラップが形成されず、液冷媒が凝縮器１に滞留されることなく、凝縮器１の流出口側に接続された液管２に導かれるようになっており、自然循環が実現される。Next, the operation of the condenser 1 will be described.
Under the condition of outdoor temperature <indoor temperature, the condenser 1 gasifies with the evaporator 3 and condenses the gas refrigerant that has passed through the gas pipe 4 into a liquid refrigerant. Since the condenser 1 is installed in an inclined manner with respect to the vertical direction inside the casing 11 of the outdoor unit 10, no trap is formed in the refrigerant flow path, and the liquid refrigerant is retained in the condenser 1. Without any problem, it is guided to the liquid pipe 2 connected to the outlet side of the condenser 1 to realize natural circulation.

以上、本実施の形態１に係る空気調和装置は、凝縮器１と蒸発器３とが配管で接続され、凝縮器１と蒸発器３との間を冷媒が循環する冷媒回路を備え、凝縮器１は、千鳥配置された複数の伝熱管を有し、液冷媒を一方の外側の列に配置された伝熱管から他方の外側の列へ配置された伝熱管へ導く第１流路と、液冷媒を他方の外側の列に配置された伝熱管から一方の列に配置された伝熱管へ導く第２流路とで構成される冷媒の流路を有し、その流路は、上段の伝熱管に形成された流入口から下段の伝熱管に形成された流出口に至るまで、第１流路と第２流路とが交互に形成されているものであり、第１流路および第２流路は、上流側から下流側に向かって下方に傾いているものである。   As described above, the air-conditioning apparatus according to Embodiment 1 includes the refrigerant circuit in which the condenser 1 and the evaporator 3 are connected by piping, and the refrigerant circulates between the condenser 1 and the evaporator 3. 1 has a plurality of heat transfer tubes arranged in a staggered manner, a first flow path for guiding liquid refrigerant from a heat transfer tube arranged in one outer row to a heat transfer tube arranged in the other outer row, And a second flow path for guiding the refrigerant from the heat transfer tubes arranged in the other outer row to the heat transfer tubes arranged in the one row. From the inlet formed in the heat pipe to the outlet formed in the lower heat transfer pipe, the first flow path and the second flow path are alternately formed, and the first flow path and the second flow path are formed. The flow path is inclined downward from the upstream side toward the downstream side.

本実施の形態１に係る空気調和装置によれば、凝縮器１は、千鳥配置された複数の伝熱管を有し、液冷媒を一方の外側の列に配置された伝熱管から他方の外側の列へ配置された伝熱管へ導く第１流路と、液冷媒を他方の外側の列に配置された伝熱管から一方の列に配置された伝熱管へ導く第２流路とで構成される冷媒の流路を有し、その流路は、上段の伝熱管に形成された流入口から下段の伝熱管に形成された流出口に至るまで、第１流路と第２流路とが交互に形成されているものであり、第１流路および第２流路は、上流側から下流側に向かって下方に傾いている。そのため、凝縮器１を鉛直方向に対して傾けて設置しても、液冷媒が凝縮器１に滞留するのを抑制することができる。   According to the air conditioning apparatus according to the first embodiment, the condenser 1 has a plurality of heat transfer tubes arranged in a staggered manner, and the liquid refrigerant is transferred from the heat transfer tubes arranged in one outer row to the other outer side. A first flow path that leads to the heat transfer tubes arranged in the row and a second flow path that leads the liquid refrigerant from the heat transfer tubes arranged in the other outer row to the heat transfer tubes arranged in one row. It has a refrigerant flow path, and the first flow path and the second flow path alternate from the inlet formed in the upper heat transfer tube to the outlet formed in the lower heat transfer tube. The first flow path and the second flow path are inclined downward from the upstream side toward the downstream side. Therefore, even if the condenser 1 is installed to be inclined with respect to the vertical direction, the liquid refrigerant can be prevented from staying in the condenser 1.

また、自然循環において、凝縮器１に滞留するのを抑制することができるため、冷媒回路内の液冷媒の分布を制御することができる。   In addition, since it is possible to suppress stagnation in the condenser 1 during natural circulation, the distribution of the liquid refrigerant in the refrigerant circuit can be controlled.

また、本実施の形態１に係る凝縮器１は、パス抜き配管を設ける必要がないため、高効率熱交換を実現することができる。   Moreover, since the condenser 1 according to the first embodiment does not need to be provided with a pass piping, it can realize high-efficiency heat exchange.

なお、本実施の形態１では、凝縮器１の段ピッチＤｐ＝２０．４ｍｍ、列ピッチＬｐ＝１７．７ｍｍとしたが、それに限定されず、他の段ピッチおよび列ピッチでもよい。また、凝縮器１の列数を４列としたが、それに限定されず、他の列数でもよい。   In the first embodiment, the step pitch Dp of the condenser 1 is set to 20.4 mm and the row pitch Lp is set to 17.7 mm. However, the present invention is not limited to this, and other step pitches and row pitches may be used. In addition, although the number of columns of the condenser 1 is four, the number of columns is not limited to this and may be other numbers.

実施の形態２．
以下、本発明の実施の形態２について説明するが、実施の形態１と重複するものについては説明を省略し、実施の形態１と同じ部分または相当する部分には同じ符号を付す。Embodiment 2. FIG.
Hereinafter, Embodiment 2 of the present invention will be described, but the description overlapping with Embodiment 1 will be omitted, and the same reference numerals will be given to the same or corresponding parts as those in Embodiment 1.

図４は、本発明の実施の形態２に係る空気調和装置の冷媒回路を示す図である。なお、図４中の矢印は冷媒の流れを示している。
本実施の形態２に係る空気調和装置は、液ポンプ５による循環式であり、図４に示すように、実施の形態１に係る冷媒回路に対して、液管２に冷媒を循環させる液ポンプ５が設けられている。具体的には、液ポンプ５の吸入側と凝縮器１、および、液ポンプ５の吐出側と蒸発器３とが、それぞれ液管２で接続されている。FIG. 4 is a diagram illustrating a refrigerant circuit of the air-conditioning apparatus according to Embodiment 2 of the present invention. In addition, the arrow in FIG. 4 has shown the flow of the refrigerant | coolant.
The air conditioner according to the second embodiment is a circulation type using a liquid pump 5, and as shown in FIG. 5 is provided. Specifically, the suction side of the liquid pump 5 and the condenser 1, and the discharge side of the liquid pump 5 and the evaporator 3 are connected by a liquid pipe 2.

図５は、本発明の実施の形態２に係る空気調和装置の室外機１０ａの構造を示す模式図である。なお、図５中の矢印は空気の流れを示している。
図５に示すように、本実施の形態２に係る凝縮器１は、室外機１０ａの内部に設けられており、蒸発器３は、室内機（図示せず）の内部に設けられている。室外機１０ａは、外郭を構成し、上部には吹き出し口１３が形成され、下部には吸い込み口１２が形成された筐体１１と、筐体１１の内部に鉛直方向に対して傾いて設置された凝縮器１と、凝縮器１と吹き出し口１３との間の２次風路側に設置された送風機１４と、吸い込み口１２と凝縮器１との間の１次風路側に設置された液ポンプ５と、を備えている。FIG. 5 is a schematic diagram showing the structure of the outdoor unit 10a of the air-conditioning apparatus according to Embodiment 2 of the present invention. In addition, the arrow in FIG. 5 has shown the flow of air.
As shown in FIG. 5, the condenser 1 according to the second embodiment is provided in the outdoor unit 10a, and the evaporator 3 is provided in the indoor unit (not shown). The outdoor unit 10a constitutes an outer shell, and a casing 11 in which a blow-out port 13 is formed in the upper part and a suction port 12 is formed in the lower part, and the interior of the casing 11 is inclined with respect to the vertical direction. The condenser 1, the blower 14 installed on the secondary air passage side between the condenser 1 and the outlet 13, and the liquid pump installed on the primary air passage side between the suction port 12 and the condenser 1 5 is provided.

図６は、本発明の実施の形態２に係る空気調和装置の凝縮器１を説明する図である。なお、図６の右側は、凝縮器１の一部を拡大した図である。また、その拡大した図中の矢印は冷媒の流れを示している。   FIG. 6 is a diagram illustrating the condenser 1 of the air-conditioning apparatus according to Embodiment 2 of the present invention. The right side of FIG. 6 is an enlarged view of a part of the condenser 1. Moreover, the arrow in the enlarged figure has shown the flow of the refrigerant | coolant.

図６に示すように、凝縮器１は、フィンチューブ型であり、後述するヘアピン管１６ａの直線部分が６列に千鳥配置されている。この凝縮器１は、同じ方向に複数積層された板状フィン１５と、板状フィン１５の貫通穴（図示せず）に挿通されるヘアピン管１６ａと、板状フィン１５の外側において隣接するヘアピン管１６ａの端部同士を連結する第１Ｕ字管１６ｂと、一方の外側の列である第１列（図６の紙面左側）に配置されたヘアピン管１６ａの端部と他方の外側の列である第６列（図６の紙面右側）に配置されたヘアピン管１６ａの端部とを連結する第２Ｕ字管１６ｃとで構成されている。   As shown in FIG. 6, the condenser 1 is a fin tube type, and straight portions of hairpin tubes 16a described later are arranged in a staggered manner in six rows. The condenser 1 includes a plurality of plate-like fins 15 stacked in the same direction, a hairpin tube 16 a inserted into a through hole (not shown) of the plate-like fins 15, and a hairpin adjacent to the outside of the plate-like fins 15. The first U-shaped tube 16b that connects the ends of the tube 16a, the end of the hairpin tube 16a arranged in the first row (the left side of FIG. 6) that is one outer row, and the other outer row It is comprised with the 2nd U-shaped pipe | tube 16c which connects the edge part of the hairpin pipe | tube 16a arrange | positioned in a certain 6th row | line | column (paper surface right side of FIG. 6).

第２Ｕ字管１６ｃは、上記の通り、第１列に配置されたヘアピン管１６ａの端部と第６列に配置されたヘアピン管１６ａの端部とを連結するが、第１列に配置されたヘアピン管１６ａの端部の方が第６列に配置されたヘアピン管１６ａの端部よりも５段下に配置されている。つまり、第２Ｕ字管１６ｃは、第６列に配置されたヘアピン管１６ａの端部と、第１列に配置されたヘアピン管１６ａの端部のうち第６列に配置されたヘアピン管１６ａの端部よりも５段下の端部とを連結する。   As described above, the second U-shaped tube 16c connects the end of the hairpin tube 16a arranged in the first row and the end of the hairpin tube 16a arranged in the sixth row, but is arranged in the first row. The end portion of the hairpin tube 16a is arranged five steps below the end portion of the hairpin tube 16a arranged in the sixth row. In other words, the second U-shaped tube 16c has the end of the hairpin tube 16a arranged in the sixth row and the end of the hairpin tube 16a arranged in the first row of the hairpin tube 16a arranged in the sixth row. The end part 5 steps below the end part is connected.

凝縮器１内を流れる冷媒の流路は、ヘアピン管１６ａおよび第１Ｕ字管１６ｂにより形成され、液冷媒を第１列から第６列へ導く第１流路と、第２Ｕ字管１６ｃにより形成され、液冷媒を第６列から第１列へ導く第２流路とで構成されている。そして、その冷媒の流路は、第１列の上段に形成された流入口（図示せず）から第６列の下段に形成された流出口（図示せず）に至るまで、第１流路と第２流路とが交互に形成されている。   The flow path of the refrigerant flowing in the condenser 1 is formed by the hairpin tube 16a and the first U-shaped tube 16b, and is formed by the first flow path for guiding the liquid refrigerant from the first row to the sixth row and the second U-shaped tube 16c. And a second flow path for guiding the liquid refrigerant from the sixth row to the first row. And the flow path of the refrigerant | coolant is a 1st flow path from the inflow port (not shown) formed in the upper stage of the 1st row to the outflow port (not shown) formed in the lower stage of the 6th row. And the second flow path are alternately formed.

第１流路の上流側である第１列に配置されたヘアピン管１６ａの端部は、第１流路の下流側である第６列に配置されたヘアピン管１６ａの端部よりも上側に配置されている。また、第２流路の上流側である第６列に配置されたヘアピン管１６ａの端部は、第２流路の下流側である第１列に配置されたヘアピン管１６ａの端部よりも上側に配置されている。そのため、第１流路および第２流路は、上流側から下流側に向かって下方に傾いており、冷媒の流路は、液冷媒が流れやすい構造となっている。   The end portion of the hairpin tube 16a arranged in the first row which is the upstream side of the first flow path is above the end portion of the hairpin tube 16a arranged in the sixth row which is the downstream side of the first flow channel. Has been placed. Moreover, the edge part of the hairpin pipe | tube 16a arrange | positioned at the 6th row | line | column which is an upstream of a 2nd flow path is rather than the edge part of the hairpin tube | pipe 16a arrange | positioned at the 1st line | column which is a downstream of a 2nd flow path. It is arranged on the upper side. Therefore, the first flow path and the second flow path are inclined downward from the upstream side toward the downstream side, and the refrigerant flow path has a structure in which the liquid refrigerant can easily flow.

また、冷媒の流路は５つ並列に形成されており、１つ目の冷媒の流路は第１＋５ｘ段目の第１流路を流れ、２つ目の冷媒の流路は第２＋５ｘ段目の第１流路を流れ、３つ目の冷媒の流路は第３＋５ｘ段目の第１流路を流れ、４つ目の冷媒の流路は第４＋５ｘ段目の第１流路を流れ、５つ目の冷媒の流路は第５＋５ｘ段目の第１流路を流れる。なお、ｘ＝０、１、２、３・・・である。   In addition, five refrigerant flow paths are formed in parallel, and the first refrigerant flow path flows through the first + 5x stage first flow path, and the second refrigerant flow path is the second + 5x stage. The third refrigerant flow path flows through the third + 5x stage first flow path, the fourth refrigerant flow path flows through the 4 + 5x stage first flow path, The flow path of the fifth refrigerant flows through the first flow path of the (5 + 5) th stage. Note that x = 0, 1, 2, 3,...

つまり、例えば、第１段目の第１流路を流れる液冷媒は、ヘアピン管１６ａおよび第１Ｕ字管１６ｂを通過して第１列の第１段から第４列の第１段目に到達した後、第２Ｕ字管１６ｃを通過して第１列の前記第１段目よりも５段下の第６段目に到達する。その後、第６段目の第１流路を流れる液冷媒は、ヘアピン管１６ａおよび第１Ｕ字管１６ｂを通過して第１列の第６段目から第４列の第６段目に到達した後、第２Ｕ字管１６ｃを通過して第１列の前記第６段目よりも５段下の第１１段目に到達する。以後、液冷媒は、流出口に至るまでこの流れを繰り返す。   That is, for example, the liquid refrigerant flowing through the first flow path of the first stage passes through the hairpin tube 16a and the first U-shaped pipe 16b and reaches the first stage of the fourth row from the first row of the first row. After that, it passes through the second U-shaped tube 16c and reaches the sixth stage, which is five stages below the first stage in the first row. Thereafter, the liquid refrigerant flowing through the first flow path of the sixth stage passes through the hairpin tube 16a and the first U-shaped pipe 16b and reaches the sixth stage of the fourth row from the sixth row of the first row. After that, it passes through the second U-shaped tube 16c and reaches the 11th stage, which is 5 stages below the 6th stage in the first row. Thereafter, the liquid refrigerant repeats this flow until it reaches the outlet.

図６に示す角度αは、第２Ｕ字管１６ｃと水平方向との角度、つまり第２流路と水平方向との角度であり、図６に示す角度βは、ヘアピン管１６ａおよび第１Ｕ字管１６ｂと水平方向との角度、つまり第１流路と水平方向との角度である。   6 is the angle between the second U-shaped tube 16c and the horizontal direction, that is, the angle between the second flow path and the horizontal direction, and the angle β illustrated in FIG. 6 is the hairpin tube 16a and the first U-shaped tube. The angle between 16b and the horizontal direction, that is, the angle between the first flow path and the horizontal direction.

凝縮器１は、室外機１０ａの筐体１１の内部において、鉛直方向に対する傾きＬが０≦Ｌ＜αまたはβ＜Ｌ≦０、つまりβ＜Ｌ＜αとなるように設置されている。ここで、凝縮器１は、段ピッチＤｐ＝２０．４ｍｍ、列ピッチＬｐ＝１７．７ｍｍの千鳥配列を有しており、α＝３０°、β＝−３０°である。   The condenser 1 is installed in the casing 11 of the outdoor unit 10a so that the inclination L with respect to the vertical direction is 0 ≦ L <α or β <L ≦ 0, that is, β <L <α. Here, the condenser 1 has a staggered arrangement with a stage pitch Dp = 20.4 mm and a row pitch Lp = 17.7 mm, and α = 30 ° and β = −30 °.

凝縮器１が、室外機１０ａの筐体１１の内部において、β＜Ｌ＜αとなるように設置されることで、第１流路および第２流路が水平方向とならず、第１流路および第２流路を下方に傾けることができる。そのため、凝縮器１を鉛直方向に対して傾けて設置しても、液冷媒が流れにくくなって凝縮器１に滞留するのを抑制することができる。   Since the condenser 1 is installed in the casing 11 of the outdoor unit 10a so that β <L <α, the first flow path and the second flow path are not in the horizontal direction, and the first flow The path and the second flow path can be tilted downward. Therefore, even if the condenser 1 is installed to be inclined with respect to the vertical direction, the liquid refrigerant is less likely to flow and can be prevented from staying in the condenser 1.

次に、凝縮器１の動作について説明する。
屋外温度＜屋内温度である条件において、凝縮器１は、蒸発器３でガス化し、ガス管４を通過したガス冷媒を、凝縮して液冷媒にする。この凝縮器１は、室外機１０ａの筐体１１の内部において鉛直方向に対して傾いて設置されているため、冷媒の流路にトラップが形成されず、液冷媒が凝縮器１に滞留されることなく、凝縮器１の流出口側に接続された液管２に設けられた液ポンプ５に導かれるようになっており、液ポンプ５による循環が実現される。Next, the operation of the condenser 1 will be described.
Under the condition of outdoor temperature <indoor temperature, the condenser 1 gasifies with the evaporator 3 and condenses the gas refrigerant that has passed through the gas pipe 4 into a liquid refrigerant. Since the condenser 1 is installed in the interior of the casing 11 of the outdoor unit 10a so as to be inclined with respect to the vertical direction, no trap is formed in the refrigerant flow path, and the liquid refrigerant is retained in the condenser 1. Without being guided, the liquid pump 5 provided in the liquid pipe 2 connected to the outlet side of the condenser 1 is led to the circulation by the liquid pump 5.

以上、本実施の形態２に係る空気調和装置の冷媒回路は、液ポンプ５を備え、液ポンプ５の吸入側と凝縮器１とが配管で接続され、液ポンプ５の吐出側と蒸発器３とが配管で接続されているものである。そのため、本実施の形態２に係る空気調和装置によれば、冷媒回路において、液冷媒が凝縮器１に滞留されることなく、液ポンプ５による冷媒の循環を実現することができる。   As described above, the refrigerant circuit of the air-conditioning apparatus according to Embodiment 2 includes the liquid pump 5, the suction side of the liquid pump 5 and the condenser 1 are connected by piping, and the discharge side of the liquid pump 5 and the evaporator 3. Are connected by piping. Therefore, according to the air conditioning apparatus according to Embodiment 2, in the refrigerant circuit, the refrigerant can be circulated by the liquid pump 5 without the liquid refrigerant remaining in the condenser 1.

なお、本実施の形態２では、凝縮器１の段ピッチＤｐ＝２０．４ｍｍ、列ピッチＬｐ＝１７．７ｍｍとしたが、それに限定されず、他の段ピッチおよび列ピッチでもよい。また、凝縮器１の列数を６列としたが、それに限定されず、他の列数でもよい。   In the second embodiment, the step pitch Dp of the condenser 1 is 20.4 mm and the row pitch Lp is 17.7 mm. However, the present invention is not limited to this, and other step pitches and row pitches may be used. Further, although the number of columns of the condenser 1 is six, the number of columns is not limited to this and may be other numbers.

実施の形態３．
以下、本発明の実施の形態３について説明するが、実施の形態１および２と重複するものについては説明を省略し、実施の形態１および２と同じ部分または相当する部分には同じ符号を付す。Embodiment 3 FIG.
Hereinafter, Embodiment 3 of the present invention will be described, but the description overlapping with Embodiments 1 and 2 will be omitted, and the same or corresponding parts as those in Embodiments 1 and 2 will be assigned the same reference numerals. .

図７は、本発明の実施の形態３に係る空気調和装置の冷媒回路を示す図である。なお、図７中の矢印は冷媒の流れを示している。
本実施の形態３に係る空気調和装置は、液ポンプ５および圧縮機６による複合循環式であり、図６に示すように、実施の形態２に係る冷媒回路に対して、ガス管４に冷媒を圧縮する圧縮機６が設けられており、液ポンプ５の吐出側と蒸発器３との間に冷媒を減圧させる絞り装置７が設けられている。また、凝縮器１と液ポンプ５の吸入側との間に液冷媒を溜めるレシーバ９が設けられており、そのレシーバ９と液ポンプ５の吸入側との間に冷媒を過冷却する過冷却熱交換器１７が設けられている。さらに、液ポンプ５と並列に液冷媒の逆流を防止する第１逆止弁８ａが設けられており、圧縮機６と並列に液冷媒の逆流を防止する第２逆止弁８ｂが設けられている。FIG. 7 is a diagram showing a refrigerant circuit of the air-conditioning apparatus according to Embodiment 3 of the present invention. In addition, the arrow in FIG. 7 has shown the flow of the refrigerant | coolant.
The air-conditioning apparatus according to the third embodiment is a combined circulation type using a liquid pump 5 and a compressor 6, and as shown in FIG. Is provided between the discharge side of the liquid pump 5 and the evaporator 3, and a throttle device 7 for reducing the pressure of the refrigerant is provided. A receiver 9 is provided between the condenser 1 and the suction side of the liquid pump 5, and a supercooling heat for supercooling the refrigerant is provided between the receiver 9 and the suction side of the liquid pump 5. An exchanger 17 is provided. Further, a first check valve 8 a for preventing the back flow of the liquid refrigerant is provided in parallel with the liquid pump 5, and a second check valve 8 b for preventing the back flow of the liquid refrigerant is provided in parallel with the compressor 6. Yes.

次に、凝縮器１の動作について説明する。
屋外温度＜屋内温度である条件において、凝縮器１は、蒸発器３でガス化し、ガス管４を通過したガス冷媒を、凝縮して液冷媒にする。この凝縮器１は、室外機１０ａの筐体１１の内部において鉛直方向に対して傾いて設置されているため、冷媒の流路にトラップが形成されず、液冷媒が凝縮器１に滞留されることなく、凝縮器１の流出口側に接続された液管２に設けられたレシーバ９に導かれるようになっており、液ポンプ５および圧縮機６による複合循環が実現される。Next, the operation of the condenser 1 will be described.
Under the condition of outdoor temperature <indoor temperature, the condenser 1 gasifies with the evaporator 3 and condenses the gas refrigerant that has passed through the gas pipe 4 into a liquid refrigerant. Since the condenser 1 is installed in the interior of the casing 11 of the outdoor unit 10a so as to be inclined with respect to the vertical direction, no trap is formed in the refrigerant flow path, and the liquid refrigerant is retained in the condenser 1. Without any problem, it is guided to the receiver 9 provided in the liquid pipe 2 connected to the outlet side of the condenser 1, and the combined circulation by the liquid pump 5 and the compressor 6 is realized.

以上、本実施の形態３に係る空気調和装置の冷媒回路は、圧縮機６と絞り装置７とを備え、圧縮機６の吸入側と蒸発器３とが配管で接続され、圧縮機６の吐出側と凝縮器１とが配管で接続されており、液ポンプ５と蒸発器３との間に絞り装置７が設けられているものである。そのため、本発明の実施の形態３に係る空気調和装置によれば、冷媒回路において、液冷媒が凝縮器１に滞留されることなく、液ポンプ５および圧縮機６による複合循環を実現することができる。   As described above, the refrigerant circuit of the air-conditioning apparatus according to Embodiment 3 includes the compressor 6 and the expansion device 7, and the suction side of the compressor 6 and the evaporator 3 are connected by piping, and the discharge of the compressor 6 is performed. The side and the condenser 1 are connected by piping, and the expansion device 7 is provided between the liquid pump 5 and the evaporator 3. Therefore, according to the air conditioning apparatus according to Embodiment 3 of the present invention, in the refrigerant circuit, the liquid refrigerant is not retained in the condenser 1, and the combined circulation by the liquid pump 5 and the compressor 6 can be realized. it can.

１ 凝縮器、２ 液管、３ 蒸発器、４ ガス管、５ 液ポンプ、６ 圧縮機、７ 絞り装置、８ａ 第１逆止弁、８ｂ 第２逆止弁、９ レシーバ、１０ 室外機、１０ａ 室外機、１１ 筐体、１２ 吸い込み口、１３ 吹き出し口、１４ 送風機、１５ 板状フィン、１６ａ ヘアピン管、１６ｂ 第１Ｕ字管、１６ｃ 第２Ｕ字管、１７ 過冷却熱交換器。   DESCRIPTION OF SYMBOLS 1 Condenser, 2 liquid pipes, 3 evaporators, 4 gas pipes, 5 liquid pumps, 6 compressors, 7 throttle device, 8a 1st check valve, 8b 2nd check valve, 9 receiver, 10 outdoor unit, 10a Outdoor unit, 11 housing, 12 suction port, 13 outlet, 14 blower, 15 plate fin, 16a hairpin tube, 16b first U-shaped tube, 16c second U-shaped tube, 17 supercooling heat exchanger.

Claims (4)

凝縮器と蒸発器とが配管で接続され、前記凝縮器と前記蒸発器との間を冷媒が循環する冷媒回路を備え、
前記凝縮器は、
千鳥配置された複数の伝熱管を有し、
液冷媒を一方の外側の列に配置された前記伝熱管から他方の外側の列へ配置された前記伝熱管へ導く第１流路と、液冷媒を前記他方の外側の列に配置された前記伝熱管から前記一方の列に配置された前記伝熱管へ導く第２流路とで構成される冷媒の流路を有し、前記流路は、上段の前記伝熱管に形成された流入口から下段の前記伝熱管に形成された流出口に至るまで、前記第１流路と前記第２流路とが交互に形成されているものであり、
前記第１流路および前記第２流路は、上流側から下流側に向かって下方に傾いているものである
空気調和装置。A condenser and an evaporator are connected by piping, and a refrigerant circuit in which a refrigerant circulates between the condenser and the evaporator is provided.
The condenser is
It has a plurality of heat transfer tubes arranged in a staggered manner,
A first flow path for guiding the liquid refrigerant from the heat transfer tubes arranged in one outer row to the heat transfer tubes arranged in the other outer row, and the liquid refrigerant arranged in the other outer row A refrigerant flow path including a second flow path that leads from the heat transfer pipe to the heat transfer pipe arranged in the one row, the flow path from an inlet formed in the upper heat transfer pipe The first flow path and the second flow path are alternately formed up to the outlet formed in the lower heat transfer tube,
The air conditioner, wherein the first flow path and the second flow path are inclined downward from the upstream side toward the downstream side. 前記第１流路は、
複数の前記伝熱管と、隣接する前記伝熱管の端部同士を連結する第１Ｕ字管とで形成されており、
前記第２流路は、
前記一方の外側の列に配置された前記伝熱管の端部と前記他方の外側の列に配置された前記伝熱管の端部とを連結する第２Ｕ字管で形成されている
請求項１に記載の空気調和装置。The first flow path is
It is formed by a plurality of the heat transfer tubes and a first U-shaped tube connecting the ends of the adjacent heat transfer tubes,
The second flow path is
The second U-shaped tube connecting the end portion of the heat transfer tube arranged in the one outer row and the end portion of the heat transfer tube arranged in the other outer row. The air conditioning apparatus described. 前記冷媒回路は、
液ポンプを備え、
前記液ポンプの吸入側と前記凝縮器とが配管で接続され、前記液ポンプの吐出側と前記蒸発器とが配管で接続されている
請求項１または２に記載の空気調和装置。The refrigerant circuit is
Equipped with a liquid pump,
The air conditioner according to claim 1 or 2, wherein a suction side of the liquid pump and the condenser are connected by a pipe, and a discharge side of the liquid pump and the evaporator are connected by a pipe. 前記冷媒回路は、
圧縮機と絞り装置とを備え、
前記圧縮機の吸入側と前記蒸発器とが配管で接続され、前記圧縮機の吐出側と前記凝縮器とが配管で接続されており、
前記液ポンプと前記蒸発器との間に前記絞り装置が設けられている
請求項３に記載の空気調和装置。The refrigerant circuit is
A compressor and a throttle device;
The suction side of the compressor and the evaporator are connected by piping, the discharge side of the compressor and the condenser are connected by piping,
The air conditioner according to claim 3, wherein the throttle device is provided between the liquid pump and the evaporator.
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