JP7065425B2 - Air conditioner - Google Patents

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JP7065425B2
JP7065425B2 JP2019010004A JP2019010004A JP7065425B2 JP 7065425 B2 JP7065425 B2 JP 7065425B2 JP 2019010004 A JP2019010004 A JP 2019010004A JP 2019010004 A JP2019010004 A JP 2019010004A JP 7065425 B2 JP7065425 B2 JP 7065425B2
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heat exchanger
plate fin
heat
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air conditioner
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JP2020118366A (en
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和希 大旗
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明はプレートフィン積層型熱交換器を用いた空気調和機に関する。 The present invention relates to an air conditioner using a plate fin laminated heat exchanger.

一般に空気調和機は、圧縮機によって圧縮した冷媒を凝縮器や蒸発器等の熱交換器に循環させ第２流体と熱交換させて冷房もしくは暖房を行うが、前記熱交換器の熱交換効率によって空気調和機としての性能や省エネ性が大きく左右される。従って、熱交換器は高効率化が強く求められている。 Generally, an air conditioner circulates a refrigerant compressed by a compressor to a heat exchanger such as a condenser or an evaporator to exchange heat with a second fluid for cooling or heating. However, depending on the heat exchange efficiency of the heat exchanger. Performance and energy saving as an air conditioner are greatly affected. Therefore, there is a strong demand for high efficiency heat exchangers.

このような中にあって、空気調和機の熱交換器は、一般的には、フィン群に伝熱管を貫通させて構成したフィンチューブ型熱交換器を用いており、伝熱管の細径化を図って熱交換効率の向上及び小型化が進められている。 Under such circumstances, the heat exchanger of the air conditioner generally uses a fin tube type heat exchanger configured by penetrating a heat transfer tube through a group of fins, and the diameter of the heat transfer tube is reduced. The heat exchange efficiency is being improved and the size is being reduced.

しかしながら、上記伝熱管の細径化には限度があるため、熱交換効率の向上及び小型化は限界に近づきつつある。 However, since there is a limit to the reduction in the diameter of the heat transfer tube, the improvement of the heat exchange efficiency and the miniaturization are approaching the limit.

一方、熱エネルギーを交換するために使用される熱交換器の中には、流路を有するプレートフィンを積層して構成したプレートフィン積層型熱交換器が知られている。 On the other hand, among the heat exchangers used for exchanging heat energy, a plate fin laminated heat exchanger configured by laminating plate fins having a flow path is known.

このプレートフィン積層型熱交換器は、プレートフィンに形成された流路を流れる冷媒と、積層されたプレートフィンの間を流れる第２流体との間で熱交換を行うもので、冷媒圧力の低い車両用の空気調和機において使用されている（特許文献１参照）。 This plate fin laminated heat exchanger exchanges heat between the refrigerant flowing through the flow path formed in the plate fins and the second fluid flowing between the laminated plate fins, and the refrigerant pressure is low. It is used in an air conditioner for vehicles (see Patent Document 1).

図１４、図１５は上記特許文献１記載のプレートフィン積層型熱交換器を示し、この熱交換器１００は、冷媒が流れる流路１０１（図１５参照）を有するプレートフィン１０２を積層したプレートフィン積層体１０３の両側部にエンドプレート１０４を積層配置し、前記流路１０１の左右両端部に流入側ヘッダ流路１０５及び流出側ヘッダ流路１０６を形成して構成してある。 14 and 15 show the plate fin laminated heat exchanger described in Patent Document 1, and the heat exchanger 100 is a plate fin in which plate fins 102 having a flow path 101 (see FIG. 15) through which a refrigerant flows are laminated. The end plates 104 are laminated and arranged on both sides of the laminated body 103, and the inflow side header flow path 105 and the outflow side header flow path 106 are formed at both left and right ends of the flow path 101.

実用新案登録第３１９２７１９号公報Utility Model Registration No. 3192719

上記特許文献１記載のプレートフィン積層型熱交換器は、プレートフィン１０２に凹状溝をプレス成形して流路１０１を形成しているので、当該流路１０１の断面積をフィンチューブ型の伝熱管に比べさらに小さくでき、熱交換効率を高めることができる。 In the plate fin laminated heat exchanger described in Patent Document 1, since a concave groove is press-formed in the plate fin 102 to form a flow path 101, the cross-sectional area of the flow path 101 is a fin tube type heat transfer tube. It can be made smaller than the above, and the heat exchange efficiency can be improved.

しかしながら、上記構成のプレートフィン積層型熱交換器は多数積層したプレートフィン１０２をロー付けのみで一体化して構成しているため、従来のフィンチューブ型熱交換器のように伝熱管で積層フィンを連結したもの、すなわち伝熱管が熱交換器の長尺寸法方向に貫通して当該伝熱管が強度メンバーとしても働くフィンチューブ型熱交換器に比べ剛性が弱い。 However, since the plate fin laminated heat exchanger having the above configuration is configured by integrating a large number of laminated plate fins 102 only by brazing, the laminated fins are formed by a heat transfer tube like a conventional fin tube type heat exchanger. The rigidity is weaker than that of a fin tube type heat exchanger in which the heat transfer tube is connected, that is, the heat transfer tube penetrates in the long dimension direction of the heat exchanger and the heat transfer tube also acts as a strength member.

そのために、このプレートフィン積層型熱交換器を家庭及び業務用の空気調和機に搭載した場合、熱交換器１００の剛性が弱いことに起因する新たな課題が発生する。 Therefore, when this plate fin laminated heat exchanger is mounted on a home or commercial air conditioner, a new problem arises due to the weak rigidity of the heat exchanger 100.

例えば、プレートフィン積層型熱交換器を家庭用の空気調和機に搭載した場合、その熱交換器は特開２０１６－２１８９９３号公報等（図１６参照）に示されるように二つの熱交換器ブロック１１０ａ、１１０ｂをその上部で突き合わせて送風ファン１１１の背面側と前面側を覆うように配置することになるが、この場合、空気調和機に課せられている背面落下試験をすると、その落下衝撃によって図１７、図１８の破線で示すように前面側熱交換器ブロック１１０ａ及び背面側熱交換器ブロック１１０ｂが変形する。そして、上記前面側熱交換器ブロック１１０ａと背面側熱交換器ブロック１１０ｂの上端の突合せ部同士間に図１８に示す如く隙間Ｔが発生し、その隙間Ｔを介して熱交換されない空気Ｚがそのまま送風ファン１１１に吸い込まれて空調後の空気Ｙのように室内に吹き出され、空調性能を低下させる、という課題が発生する。 For example, when a plate fin laminated heat exchanger is mounted on a household air exchanger, the heat exchanger has two heat exchanger blocks as shown in Japanese Patent Application Laid-Open No. 2016-218993 (see FIG. 16). The 110a and 110b are arranged so as to cover the back side and the front side of the blower fan 111 by abutting each other on the upper portion thereof. As shown by the broken lines in FIGS. 17 and 18, the front side heat exchanger block 110a and the back side heat exchanger block 110b are deformed. Then, as shown in FIG. 18, a gap T is generated between the butted portions at the upper ends of the front side heat exchanger block 110a and the back side heat exchanger block 110b, and the air Z that is not heat exchanged through the gap T remains as it is. There arises a problem that the air is sucked into the blower fan 111 and blown into the room like the air Y after air conditioning, which deteriorates the air conditioning performance.

本発明はこのような点に鑑みてなしたもので、落下試験しても熱交換器同士間に隙間が発生することのない空気調和機を提供することを目的としたものである。 The present invention has been made in view of such a point, and an object of the present invention is to provide an air conditioner in which no gap is generated between heat exchangers even in a drop test.

本発明は、上記目的を達成するため、熱交換器を構成する熱交換器ブロックはその上部を突き合せた状態で連結部材により連結した構成としてある。 In the present invention, in order to achieve the above object, the heat exchanger blocks constituting the heat exchanger are configured to be connected by a connecting member with their upper portions abutted against each other.

これにより、落下試験時に熱交換器ブロックの上部が変形しても各熱交換器ブロックの変形量は同じとなって両者間に隙間が発生することがなくなる。よって、隙間を介して熱交換されない空気が流れるのを防止でき、空調等の熱交換性能の低下を防止してプレートフィン積層型熱交換器が持つ高い熱交換効率を生かしつつ高性能な空気調和機とすることができる。 As a result, even if the upper part of the heat exchanger block is deformed during the drop test, the amount of deformation of each heat exchanger block is the same and no gap is generated between the two. Therefore, it is possible to prevent air that is not heat exchanged from flowing through the gap, prevent deterioration of heat exchange performance such as air conditioning, and utilize the high heat exchange efficiency of the plate fin laminated heat exchanger to achieve high-performance air harmonization. It can be an opportunity.

本発明は、上記構成により、プレートフィンを積層して構成した熱交換器ブロックを突き合わせて構成していても、二つの熱交換器ブロックの突合せ部分に隙間が生じて熱交換されない空気が流れるのを防止でき、空調等の熱交換性能が高い空気調和機を提供することができる。 According to the above configuration, even if the heat exchanger blocks composed of laminated plate fins are butted against each other, a gap is generated in the butted portion of the two heat exchanger blocks and air that is not heat exchanged flows. It is possible to provide an air conditioner having high heat exchange performance such as air conditioning.

本発明の実施の形態１におけるプレートフィン積層型熱交換器を搭載した空気調和機の室内機を示す斜視図A perspective view showing an indoor unit of an air conditioner equipped with a plate fin laminated heat exchanger according to the first embodiment of the present invention. 同室内機の断面図Cross-sectional view of the indoor unit 同室内機に搭載したプレートフィン積層型熱交換器の分解斜視図An exploded perspective view of the plate fin laminated heat exchanger mounted on the indoor unit. 同プレートフィン積層型熱交換器とこれを保持する機器本体構成部品を示す斜視図A perspective view showing the plate fin laminated heat exchanger and the equipment main body components that hold it. 同プレートフィン積層型熱交換器の側面図Side view of the plate fin laminated heat exchanger 同プレートフィン積層型熱交換器にける熱交換器ブロックの突き合わせ部を示す側面図Side view showing the butt portion of the heat exchanger block in the plate fin laminated heat exchanger 同プレートフィン積層型熱交換器にける熱交換器ブロックの突き合わせ部の連結構成を示す拡大側面図Enlarged side view showing the connection configuration of the butt portion of the heat exchanger block in the plate fin laminated heat exchanger. 本発明の実施の形態２における空気調和機に搭載したプレートフィン積層型熱交換器における熱交換器ブロックの突き合わせ部を示す側面図A side view showing a butt portion of a heat exchanger block in a plate fin laminated heat exchanger mounted on an air conditioner according to a second embodiment of the present invention. 同プレートフィン積層型熱交換器にける熱交換器ブロックの突き合わせ部の連結構成を示す拡大側面図Enlarged side view showing the connection configuration of the butt portion of the heat exchanger block in the plate fin laminated heat exchanger. 本発明の実施の形態３における空気調和機に搭載したプレートフィン積層型熱交換器における熱交換器ブロックの突き合わせ部を示す側面図A side view showing a butt portion of a heat exchanger block in a plate fin laminated heat exchanger mounted on an air conditioner according to a third embodiment of the present invention. 同プレートフィン積層型熱交換器にける熱交換器ブロックの突き合わせ部の連結構成を示す拡大斜視図Enlarged perspective view showing the connection configuration of the butt portion of the heat exchanger block in the plate fin laminated heat exchanger. 本発明の実施の形態４における空気調和機に搭載したプレートフィン積層型熱交換器における熱交換器ブロックの突き合わせ部を示す側面図A side view showing a butt portion of a heat exchanger block in the plate fin laminated heat exchanger mounted on the air conditioner according to the fourth embodiment of the present invention. 同プレートフィン積層型熱交換器にける熱交換器ブロックの突き合わせ部の連結構成を示す拡大側面図Enlarged side view showing the connection configuration of the butt portion of the heat exchanger block in the plate fin laminated heat exchanger. 従来のプレートフィン積層型熱交換器の断面図Cross-sectional view of a conventional plate fin laminated heat exchanger 同従来のプレートフィン積層型熱交換器におけるプレートフィンの平面図Plan view of plate fins in the conventional plate fin laminated heat exchanger 従来の空気調和機を示す断面図Sectional view showing a conventional air conditioner 本出願人が提案するプレートフィン積層型熱交換器の課題説明用の斜視図Perspective view for explaining the problem of the plate fin laminated heat exchanger proposed by the present applicant. 同本出願人が提案するプレートフィン積層型熱交換器の課題説明用の作用説明図Operation explanatory diagram for explaining the problem of the plate fin laminated heat exchanger proposed by the applicant.

第１の発明は、室内機本体と、前記室内機本体内に設けた熱交換器及び送風ファンとを備え、前記熱交換器は二つの熱交換器ブロックの上部を突き合わせて前記送風ファンの前面側と背面側を覆うように構成するとともに、前記各熱交換器ブロックは複数の伝熱流路を有するプレートフィンを多数積層して構成し、且つ、前記熱交換器ブロックはその上部を突き合せた状態で連結部材により連結した構成としてある。 The first invention includes an indoor unit main body, a heat exchanger provided in the indoor unit main body, and a blower fan, and the heat exchanger has the upper portions of two heat exchanger blocks butted against each other and the front surface of the blower fan. Each heat exchanger block is configured to cover the side and the back side, and each heat exchanger block is configured by laminating a large number of plate fins having a plurality of heat transfer channels, and the heat exchanger block abuts the upper portions thereof. It is configured to be connected by a connecting member in the state.

これにより、落下試験時に熱交換器ブロックの上部が変形しても各熱交換器ブロックの変形量は同じとなって両者間に隙間が発生することがなくなる。よって、隙間を介して熱交換されない空気が流れるのを防止でき、空調等の熱交換性能の低下を防止してプレートフィン積層型熱交換器が持つ高い熱交換効率を生かしつつ高性能な空気調和機とすることができる。 As a result, even if the upper part of the heat exchanger block is deformed during the drop test, the amount of deformation of each heat exchanger block is the same and no gap is generated between the two. Therefore, it is possible to prevent air that is not heat exchanged from flowing through the gap, prevent deterioration of heat exchange performance such as air conditioning, and utilize the high heat exchange efficiency of the plate fin laminated heat exchanger to achieve high-performance air harmonization. It can be an opportunity.

第２の発明は、第１の発明において、前記連結部材を、前記熱交換器ブロックの突合せ部に跨るように配置し、かつ、前記連結部材とプレートフィンの突合せ部の双方に透孔を設け、前記連結部材の透孔と前記プレートフィンの透孔を合致させ、当該合致させた透孔に連結部材軸を挿通させて二つの熱交換器ブロックを連結した構成としてある。 In the second invention, in the first invention, the connecting member is arranged so as to straddle the butt portion of the heat exchanger block, and through holes are provided in both the butt portion of the connecting member and the butt portion of the plate fin. The through hole of the connecting member and the through hole of the plate fin are matched, and the connecting member shaft is inserted through the matched through hole to connect the two heat exchanger blocks.

これにより、二つの熱交換器ブロックを強固に連結することができ、二つの熱交換器ブロックの突き合わせ部分に隙間が生じるのを確実に防止することができる。 As a result, the two heat exchanger blocks can be firmly connected, and it is possible to reliably prevent a gap from being formed at the abutting portion of the two heat exchanger blocks.

第３の発明は、第１の発明において、前記各熱交換器ブロックのプレートフィン同士を嵌合部にて嵌合させ、前記嵌合部に設けた透孔に連結部材軸を挿通させて前記各熱交換器ブロックを連結した構成としてある。 In the third aspect of the invention, in the first invention, the plate fins of the heat exchanger blocks are fitted to each other at the fitting portion, and the connecting member shaft is inserted through the through hole provided in the fitting portion. Each heat exchanger block is connected to each other.

これにより、二つの熱交換器ブロックを連結部材軸だけで相互に連結することができ、簡単な構成で二つの熱交換器ブロックの突き合わせ部分に隙間が生じるのを防止することができる。 As a result, the two heat exchanger blocks can be connected to each other only by the connecting member shaft, and it is possible to prevent a gap from being formed in the abutting portion of the two heat exchanger blocks with a simple configuration.

第４の発明は、第１の発明において、前記二つの熱交換器ブロックは、積層した多数のプレートフィンを締結する締結手段を備え、前記締結手段同士を断面略コ字状のステープラーで連結して前記二つの熱交換器ブロックを連結した構成としてある。 A fourth aspect of the invention is the first aspect of the invention, wherein the two heat exchanger blocks are provided with fastening means for fastening a large number of laminated plate fins, and the fastening means are connected to each other by a stapler having a substantially U-shaped cross section. The two heat exchanger blocks are connected to each other.

これにより、積層した多数のプレートフィンを締結する締結手段を利用して二つの熱交換器ブロックを強固に固定することができ、簡素な構成で二つの熱交換器ブロックの突き合わせ部分に隙間が生じるのを防止することができる。 As a result, the two heat exchanger blocks can be firmly fixed by using the fastening means for fastening a large number of laminated plate fins, and a gap is created in the abutting portion of the two heat exchanger blocks with a simple configuration. Can be prevented.

以下、本発明の実施の形態について、添付の図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

なお、本開示の熱交換器は、以下の実施形態に記載したプレートフィン積層型熱交換器の構成に限定されるものではなく、以下の実施形態において説明する技術的思想と同等の熱交換器の構成を含むものである。つまり、以下で説明する実施形態は、本発明の一例を示すものであって、実施形態において示される構成、機能、動作などは、例示であり、本開示を限定するものではない。 The heat exchanger of the present disclosure is not limited to the configuration of the plate fin laminated heat exchanger described in the following embodiments, and is equivalent to the technical idea described in the following embodiments. It includes the composition of. That is, the embodiments described below show an example of the present invention, and the configurations, functions, operations, and the like shown in the embodiments are examples and do not limit the present disclosure.

（実施の形態１）
本実施の形態１の空気調和機は、室内機と室外機が冷媒配管及び制御配線等により互いに接続された、所謂セパレート型の空気調和機である。室内機と室外機によりヒートポンプが構成されており、室外機には圧縮機が設けられている。実施の形態１の空気調和機における室内機は、室内の壁面に取り付ける壁掛け式室内機である。 (Embodiment 1)
The air conditioner of the first embodiment is a so-called separate type air conditioner in which the indoor unit and the outdoor unit are connected to each other by a refrigerant pipe, a control wiring, or the like. A heat pump is composed of an indoor unit and an outdoor unit, and the outdoor unit is equipped with a compressor. The indoor unit in the air conditioner according to the first embodiment is a wall-mounted indoor unit mounted on a wall surface of the room.

図１は本発明の実施の形態１におけるプレートフィン積層型熱交換器を搭載した空気調和機の室内機を示す斜視図、図２は同室内機の断面図、図３は同室内機に搭載したプレートフィン積層型熱交換器の分解斜視図、図４は同プレートフィン積層型熱交換器とこれを保持する機器本体構成部品を示す斜視図、図５は同プレートフィン積層型熱交換器の側面図、図６は同プレートフィン積層型熱交換器にける熱交換器ブロックの突き合わせ部を示す側面図、図７は同プレートフィン積層型熱交換器にける熱交換器ブロックの突き合わせ部の連結構成を示す拡大側面図である。 FIG. 1 is a perspective view showing an indoor unit of an air conditioner equipped with a plate fin laminated heat exchanger according to the first embodiment of the present invention, FIG. 2 is a sectional view of the indoor unit, and FIG. 3 is mounted on the indoor unit. An exploded perspective view of the plate fin laminated heat exchanger, FIG. 4 is a perspective view showing the plate fin laminated heat exchanger and the components of the main body of the device holding the plate fin laminated heat exchanger, and FIG. 5 is the plate fin laminated heat exchanger. Side view, FIG. 6 is a side view showing the butt portion of the heat exchanger block in the plate fin laminated heat exchanger, and FIG. 7 is the connection of the butt portion of the heat exchanger block in the plate fin laminated heat exchanger. It is an enlarged side view which shows the structure.

本実施の形態における空気調和機の室内機１は、図１、図２に示すように、上面に開口部２ａを有する室内機本体２と、室内機本体２の前面を覆う前面パネル３とを備えている。 As shown in FIGS. 1 and 2, the indoor unit 1 of the air conditioner according to the present embodiment has an indoor unit main body 2 having an opening 2a on the upper surface and a front panel 3 covering the front surface of the indoor unit main body 2. I have.

室内機本体２の内部には、図２に示すように、開口部２ａから取り入れた室内空気を熱交換する熱交換器４と、熱交換器４で熱交換された空気を室内に吹き出すための風力源である送風ファン５とが設けられている。送風ファン５は、室内機本体２の下方に設けられた吹出口６を通じて室内に空気を吹き出すように設けられている。また、室内機本体２の前記送風ファン５下流側から吹出口６に至る通風路７には、吹出口６を開閉するとともに空気の吹き出し方向を上下に変更する上下風向変更羽根８と、空気の吹き出し方向を左右に変更する左右風向変更羽根９とが設けられている。 Inside the indoor unit main body 2, as shown in FIG. 2, a heat exchanger 4 for heat exchange of indoor air taken in from the opening 2a and an air exchanged by the heat exchanger 4 are blown into the room. A blower fan 5 which is a wind source is provided. The blower fan 5 is provided so as to blow air into the room through an outlet 6 provided below the indoor unit main body 2. Further, in the ventilation passage 7 from the downstream side of the blower fan 5 to the outlet 6 of the indoor unit main body 2, the air outlet 6 is opened and closed, and the vertical wind direction changing blade 8 for changing the air blowing direction up and down, and the air Left and right wind direction changing blades 9 for changing the blowing direction to the left and right are provided.

また、前記室内機本体２の開口部２ａと熱交換器４との間には、開口部２ａから取り入れた室内空気に含まれる塵埃を除去するためのフィルタ１０が設けられている。なお、本実施の形態にかかる空気調和機は、フィルタ１０の網部分に付着した塵埃を自動的に清掃するフィルタ掃除ユニット１１を備えている。 Further, a filter 10 for removing dust contained in the indoor air taken in from the opening 2a is provided between the opening 2a of the indoor unit main body 2 and the heat exchanger 4. The air conditioner according to the present embodiment includes a filter cleaning unit 11 that automatically cleans dust adhering to the mesh portion of the filter 10.

空気調和機が空調運転を開始すると、上下風向変更羽根８が開制御されて吹出口６が開放される。この状態で送風ファン５が駆動されることで、室内空気が開口部２ａを介して室内機の内部に取り入れられる。取り入れられた室内空気は、熱交換器４で熱交換され、送風ファン５を通過し、送風ファン５の送風方向の下流側に形成された通風路７を通過して、吹出口６より吹き出される。 When the air conditioner starts the air conditioning operation, the vertical wind direction changing blade 8 is controlled to open and the outlet 6 is opened. By driving the blower fan 5 in this state, the indoor air is taken into the inside of the indoor unit through the opening 2a. The taken-in indoor air is heat-exchanged by the heat exchanger 4, passes through the blower fan 5, passes through the ventilation passage 7 formed on the downstream side in the blower direction of the blower fan 5, and is blown out from the outlet 6. To.

上記室内空気と熱交換する熱交換器４は、図３に示すように、略弓型形状のプレートフィン１２を積層して構成したプレートフィン積層体１３の両側に平面視が略同一形状のエンドプレート１４、１４をロー付けにより接合一体化して構成している。そして、略弓型長方形状の一端部側に、蒸発器として用いる場合には入口となり凝縮器として用いる場合は出口となるヘッダ流路管Ａ１５及びその逆となるヘッダ流路管Ｂ１６とを有している。 As shown in FIG. 3, the heat exchanger 4 that exchanges heat with the indoor air has ends having substantially the same plan view on both sides of a plate fin laminate 13 formed by laminating plate fins 12 having a substantially bow shape. The plates 14 and 14 are joined and integrated by brazing. Further, on one end side of a substantially bow-shaped rectangle, there is a header flow path tube A15 which is an inlet when used as an evaporator and an outlet when used as a condenser, and a header flow path tube B16 which is the opposite. ing.

上記プレートフィン積層体１３の両側のエンドプレート１４、１４は、更にプレートフィン積層体１３を挟持した形でボルト・ナット若しくはカシメピン軸等の締結手段１７によりプレートフィン積層体１３に締結固定して、熱交換器４としての剛性をサポートしている。 The end plates 14 and 14 on both sides of the plate fin laminate 13 are further fastened and fixed to the plate fin laminate 13 by fastening means 17 such as bolts, nuts or caulking pin shafts while sandwiching the plate fin laminate 13. It supports the rigidity of the heat exchanger 4.

また、プレートフィン積層体１３を構成するプレートフィン１２は、冷媒が流れる伝熱流路１８を有し、多数積層して各プレートフィン１２同士の間に空気が流れる積層間隔を形成している。そして、上記プレートフィン１２に設けた前記伝熱流路１８を流れる冷媒と各プレートフィン１２同士の間の積層間隙を流れる空気との間で熱交換する。 Further, the plate fins 12 constituting the plate fin laminated body 13 have a heat transfer flow path 18 through which a refrigerant flows, and a large number of the plate fins 12 are laminated to form a stacking interval in which air flows between the plate fins 12. Then, heat is exchanged between the refrigerant flowing through the heat transfer flow path 18 provided in the plate fins 12 and the air flowing through the stacking gap between the plate fins 12.

なお、本実施の形態では上記熱交換器４は、図４に示すように、複数、この例では二つのプレートフィン積層型の熱交換器部４－１、４－２の端部を合わせ、この各熱交換器部４－１、４－２を貫通する形で締結手段１７を通して連結一体化することにより構成してあり、室内機１の長手方向にマッチした長さの熱交換器４としてある。 In the present embodiment, as shown in FIG. 4, the heat exchanger 4 has a plurality of heat exchangers 4, and in this example, two plate fin laminated heat exchanger units 4-1 and 4-2 are aligned at the ends. As a heat exchanger 4 having a length matching the longitudinal direction of the indoor unit 1, it is configured by connecting and integrating through the fastening means 17 so as to penetrate each of the heat exchanger portions 4-1 and 4-2. be.

上記のように構成したプレートフィン積層型の熱交換器４は、図２に示すように、二つの熱交換器ブロック４ａ、４ｂをその上部で突き合わせて送風ファン５の背面側と前面側を覆うよう逆Ｖ字型状に配置し、室内機本体２の背面側を構成する本体構成部品としての熱交取付枠１９に取り付けて室内機本体２内に設けてある。 As shown in FIG. 2, the plate fin laminated heat exchanger 4 configured as described above covers the back side and the front side of the blower fan 5 by abutting the two heat exchanger blocks 4a and 4b at the upper part thereof. It is arranged in an inverted V shape and is attached to the heat exchange mounting frame 19 as a main body component constituting the back side of the indoor unit main body 2 and provided in the indoor unit main body 2.

そして、上記二つの熱交換器ブロック４ａ、４ｂは、図４に示すように、熱交換器ブロック４ａ、４ｂの上部からその突合せ部双方のエンドプレート１４もしくはプレートフィン１２同士間に跨がるように連結部材２０を嵌合させ、この連結部材２０を介して連結してある。詳述すると、連結部材２０は断面略コ字状に形成してあり、一点鎖線矢印で示すように熱交換器ブロック４ａ、４ｂの長手方向数か所のプレートフィン１２もしくはエンドプレート１４同士間に嵌合させてある。そして、上記熱交換器ブロック４ａ、４ｂのエンドプレート１４もしくはプレートフィン１２を嵌合挟持することになる連結部材２０の挟持片部２０ａには図７に示すように透孔２１が設けてある。一方、前記連結部材２０の透孔２１と対向する前記熱交換器ブロック４ａ、４ｂのエンドプレート１４及びプレートフィン１２にも同様の透孔２２が設けてある。そして、上記連結部材２０の透孔２１とプレートフィン１２もしくはエンドプレート１４の透孔２２とを合致させ、この合致させた透孔２１、２２に連結部材軸２３を挿通させて二つの熱交換器ブロック４ａ、４ｂを連結してある。 Then, as shown in FIG. 4, the two heat exchanger blocks 4a and 4b straddle between the end plates 14 or plate fins 12 of both the abutting portions from the upper part of the heat exchanger blocks 4a and 4b. A connecting member 20 is fitted to the vehicle, and the connecting member 20 is connected via the connecting member 20. More specifically, the connecting member 20 is formed in a substantially U-shaped cross section, and as shown by the alternate long and short dash arrow, between the plate fins 12 or the end plates 14 at several locations in the longitudinal direction of the heat exchanger blocks 4a and 4b. It is fitted. As shown in FIG. 7, a through hole 21 is provided in the sandwiching piece portion 20a of the connecting member 20 to which the end plate 14 or the plate fin 12 of the heat exchanger blocks 4a and 4b is fitted and clamped. On the other hand, similar through holes 22 are provided in the end plates 14 and plate fins 12 of the heat exchanger blocks 4a and 4b facing the through holes 21 of the connecting member 20. Then, the through hole 21 of the connecting member 20 and the through hole 22 of the plate fin 12 or the end plate 14 are matched, and the connecting member shaft 23 is inserted through the matched through holes 21, 22 to form two heat exchangers. The blocks 4a and 4b are connected.

なお、この例では連結部材２０は熱交換器ブロック４ａ、４ｂの長手方向に適宜間隔を置いて複数設けたものを例示しているが、この連結部材２０の数と設置位置は落下試験の結果の隙間発生状況等に基づき適宜決定すればよい。 In this example, a plurality of connecting members 20 are provided at appropriate intervals in the longitudinal direction of the heat exchanger blocks 4a and 4b, but the number and installation positions of the connecting members 20 are the results of the drop test. It may be determined as appropriate based on the state of occurrence of gaps in the above.

或いはまた、連結部材２０は図４の一点破線の図番２０で示すように熱交換器ブロック４ａ、４ｂの長手方向全域もしくは熱交換器部４－１、４－２の長手方向全域に跨る長さを持つ連結部材２０としてもよいものである。 Alternatively, the connecting member 20 has a length spanning the entire longitudinal direction of the heat exchanger blocks 4a and 4b or the entire longitudinal direction of the heat exchanger portions 4-1 and 4-2 as shown by the dotted line number 20 in FIG. It may be a connecting member 20 having a sword.

また、連結部材軸２３は前記したプレートフィン積層体１３の両側にエンドプレート１４、１４を締結固定するボルト等の締結手段１７を利用して構成してもよいものである。 Further, the connecting member shaft 23 may be configured by using fastening means 17 such as bolts for fastening and fixing the end plates 14 and 14 on both sides of the plate fin laminate 13.

なお、本実施の形態では連結部材２０と締結手段１７とは別の場合を例示しており、図７等に示す図番２４はプレートフィン１２、エンドプレート１４を積層状態で連結固定するボルト若しくはカシメピン軸等の締結手段１７を通す締結固定用孔を示す。 In this embodiment, a case where the connecting member 20 and the fastening means 17 are different from each other is illustrated, and FIG. 24 shown in FIG. 7 or the like is a bolt or a bolt for connecting and fixing the plate fin 12 and the end plate 14 in a laminated state. A fastening fixing hole through which the fastening means 17 such as a caulking pin shaft is passed is shown.

次に上記のように構成した空気調和機において、その作用効果を説明する。 Next, the action and effect of the air conditioner configured as described above will be described.

本実施の形態の空気調和機は、空調運転を開始すると、送風ファン５が駆動され、室内空気が開口部２ａを介して室内機の内部に取り入れられる。取り入れられた室内空気は、熱交換器４で熱交換され、送風ファン５を通過し、送風ファン５の送風方向の下流側に形成された通風路７を通過して、解放された吹出口６より吹き出される。 In the air conditioner of the present embodiment, when the air conditioning operation is started, the blower fan 5 is driven and the indoor air is taken into the inside of the indoor unit through the opening 2a. The taken-in indoor air is heat-exchanged by the heat exchanger 4, passes through the blower fan 5, passes through the ventilation passage 7 formed on the downstream side in the blower direction of the blower fan 5, and is released. More blown out.

このように動作する空気調和機は出荷前に本体背面を下方にして落下試験が行われる。 An air conditioner operating in this way is subjected to a drop test with the back surface of the main body facing down before shipment.

ここで、上記空気調和機に搭載した熱交換器４の熱交換器ブロック４ａ、４ｂは、既述したようにプレートフィン１２を多数積層してロー付け等で接合一体化して構成したものであるから剛性が弱く、熱交換器ブロック４ａ、４ｂの上部の突合せ部分が落下衝撃で変形することがある。 Here, the heat exchanger blocks 4a and 4b of the heat exchanger 4 mounted on the air conditioner are configured by laminating a large number of plate fins 12 and joining and integrating them by brazing or the like as described above. Therefore, the rigidity is weak, and the butt portion at the upper part of the heat exchanger blocks 4a and 4b may be deformed by a drop impact.

しかしながら、本実施の形態の熱交換器４の熱交換器ブロック４ａ、４ｂは、突合せ部を連結部材２０で連結しているので、仮に変形するようなことがあっても両方の熱交換器ブロック４ａ、４ｂが同じように変形する。つまり、両方の熱交換器ブロック４ａ、４ｂの変形量が同じとなり、両者間に隙間が発生することがなくなる。よって、隙間を介して熱交換されない空気が流れるのを防止でき、空調等の熱交換性能の低下を防止できる。 However, in the heat exchanger blocks 4a and 4b of the heat exchanger 4 of the present embodiment, since the butt portions are connected by the connecting member 20, both heat exchanger blocks may be deformed even if they are deformed. 4a and 4b are similarly deformed. That is, the amount of deformation of both heat exchanger blocks 4a and 4b is the same, and no gap is generated between them. Therefore, it is possible to prevent air that is not heat exchanged from flowing through the gap, and it is possible to prevent deterioration of heat exchange performance such as air conditioning.

特に本実施の形態では上記各熱交換器ブロック４ａ、４ｂは、二つの熱交換器部４－１、４－２同士を連結して構成しているので、熱交換器４全体としては長くても一つ一つの熱交換器部４－１、４－２は長さが短いので、落下衝撃による突合せ部の変形量を少なくすることができる。よって、熱交換器ブロック４ａ、４ｂの突合せ部変形による隙間発生を効果的に抑制して高い熱交換性能を確保することができる。 In particular, in the present embodiment, the heat exchanger blocks 4a and 4b are configured by connecting the two heat exchanger units 4-1 and 4-2, so that the heat exchanger 4 as a whole is long. Since each of the heat exchanger portions 4-1 and 4-2 has a short length, the amount of deformation of the butt portion due to the drop impact can be reduced. Therefore, it is possible to effectively suppress the generation of gaps due to the deformation of the butt portions of the heat exchanger blocks 4a and 4b, and secure high heat exchange performance.

（実施の形態２）
図８は実施の形態２における空気調和機に搭載したプレートフィン積層型熱交換器における熱交換器ブロックの突き合わせ部を示す側面図、図９は同熱交換器ブロックの突き合わせ部の連結構成を示す拡大側面図である。 (Embodiment 2)
FIG. 8 is a side view showing a butt portion of the heat exchanger block in the plate fin laminated heat exchanger mounted on the air conditioner according to the second embodiment, and FIG. 9 shows a connection configuration of the butt portion of the heat exchanger block. It is an enlarged side view.

本実施の形態は、前記実施の形態１で示した連結部材の変形例であり、この連結部材２００は両端部分に挟持片部２２０ａを設けた構成としてある。そして、上記挟持片部２２０ａを熱交換器ブロック４ａ、４ｂのエンドプレート１４あるいはプレートフィン１２に嵌合させて，両熱交換器ブロック４ａ、４ｂを連結する構成としてある。 This embodiment is a modification of the connecting member shown in the first embodiment, and the connecting member 200 has a structure in which holding piece portions 220a are provided at both end portions. Then, the holding piece portion 220a is fitted to the end plate 14 or the plate fin 12 of the heat exchanger blocks 4a and 4b, and both heat exchanger blocks 4a and 4b are connected to each other.

本実施の形態においても、前記実施の形態１と同様、落下試験しても熱交換器ブロック４ａ、４ｂの突合せ部分に隙間が発生するのを防止できる。 Also in the present embodiment, as in the case of the first embodiment, it is possible to prevent a gap from being generated in the butt portion of the heat exchanger blocks 4a and 4b even in the drop test.

その他詳細な構成、作用効果は実施の形態１と同様であり、説明は省略する。 Other detailed configurations and actions and effects are the same as those in the first embodiment, and the description thereof will be omitted.

（実施の形態３）
図１０は実施の形態３における空気調和機に搭載したプレートフィン積層型熱交換器における熱交換器ブロックの突き合わせ部を示す側面図、図１１は同熱交換器ブロックの突き合わせ部の連結構成を示す拡大斜視図である。 (Embodiment 3)
FIG. 10 is a side view showing a butt portion of the heat exchanger block in the plate fin laminated heat exchanger mounted on the air conditioner according to the third embodiment, and FIG. 11 shows a connection configuration of the butt portion of the heat exchanger block. It is an enlarged perspective view.

本実施の形態は、各熱交換器ブロック４ａ、４ｂのプレートフィン１２同士をオーバーラップ状態に嵌合させて突き合わせ、このオーバーラップ部分に設けた透孔２２同士を合致させて当該透孔２２に連結部材軸２３を挿通させることにより二つの熱交換器ブロック４ａ、４ｂを連結した構成としてある。 In the present embodiment, the plate fins 12 of the heat exchanger blocks 4a and 4b are fitted to each other in an overlapping state and abutted against each other, and the through holes 22 provided in the overlap portion are matched with each other to form the through holes 22. The two heat exchanger blocks 4a and 4b are connected by inserting the connecting member shaft 23.

上記構成によれば、連結部材軸２３だけで二つの熱交換器ブロック４ａ、４ｂを連結することができる。すなわち、二つの熱交換器ブロック４ａ、４ｂを連結するのに実施の形態１，２で示すような連結部材２０、２００を必要とせず、構成の簡素化を図ることができる。そして、前記実施の形態１，２と同様、二つの熱交換器ブロック４ａ、４ｂの突き合わせ部分に隙間が生じるのを防止することができる。 According to the above configuration, the two heat exchanger blocks 4a and 4b can be connected only by the connecting member shaft 23. That is, connecting the two heat exchanger blocks 4a and 4b does not require the connecting members 20 and 200 as shown in the first and second embodiments, and the configuration can be simplified. Then, as in the first and second embodiments, it is possible to prevent a gap from being formed in the abutting portion of the two heat exchanger blocks 4a and 4b.

その他の構成、作用効果は実施の形態１と同様であり、説明は省略する。 Other configurations and actions and effects are the same as those in the first embodiment, and the description thereof will be omitted.

（実施の形態４）
図１２は実施の形態４における空気調和機に搭載したプレートフィン積層型熱交換器における熱交換器ブロックの突き合わせ部を示す側面図、図１３は同熱交換器ブロックの突き合わせ部の連結構成を示す拡大側面図である。 (Embodiment 4)
FIG. 12 is a side view showing a butt portion of the heat exchanger block in the plate fin laminated heat exchanger mounted on the air conditioner according to the fourth embodiment, and FIG. 13 shows a connection configuration of the butt portion of the heat exchanger block. It is an enlarged side view.

本実施の形態は、プレートフィン積層体１３の両側にエンドプレート１４、１４を締結固定するボルト等の締結手段１７を利用して二つの熱交換器ブロック４ａ、４ｂを連結したものである。すなわち、一方の熱交換器ブロック４ａのボルト等からなる締結手段１７と他方の熱交換器ブロック４ｂのボルト等からなる締結手段１７との間にステープラー２５を嵌め込んで二つの熱交換器ブロック４ａ、４ｂを連結している。 In this embodiment, two heat exchanger blocks 4a and 4b are connected to both sides of the plate fin laminate 13 by using fastening means 17 such as bolts for fastening and fixing the end plates 14 and 14. That is, the stapler 25 is fitted between the fastening means 17 made of bolts or the like of one heat exchanger block 4a and the fastening means 17 made of bolts or the like of the other heat exchanger block 4b to fit the two heat exchanger blocks 4a. 4b are connected.

上記構成によれば、締結手段１７を利用して二つの熱交換器ブロック４ａ、４ｂを連結するので、実施の形態１，２で示すような連結部材２０，２００と連結部材軸２３を必要とせず、より構成の簡素化を図ることができる。そして、締結手段１７はプレートフィン１２、エンドプレート１４を積層状態で連結固定するためのものであるから十分な強度を持つており、突合せ部の連結強度を高めて隙間防止効果を更に良好なものとすることができる。 According to the above configuration, since the two heat exchanger blocks 4a and 4b are connected by using the fastening means 17, the connecting members 20 and 200 and the connecting member shaft 23 as shown in the first and second embodiments are required. However, the configuration can be further simplified. Since the fastening means 17 is for connecting and fixing the plate fins 12 and the end plates 14 in a laminated state, the fastening means 17 has sufficient strength, and the connecting strength of the butt portion is increased to further improve the gap prevention effect. Can be.

なお、ステープラー２５は一箇所だけでなく、複数個所に設けるのが好ましく、実施の形態１、２と同様落下試験の結果によって隙間が発生しやすい場所に適宜設ければよい。 The stapler 25 is preferably provided not only at one place but at a plurality of places, and may be appropriately provided at a place where a gap is likely to occur depending on the result of the drop test as in the first and second embodiments.

その他の構成、作用効果は実施の形態１と同様であり、説明は省略する。 Other configurations and actions and effects are the same as those in the first embodiment, and the description thereof will be omitted.

以上、本発明に係る空気調和機について、上記実施の形態を用いて説明したが、本発明はこれに限定されるものではない。 Although the air conditioner according to the present invention has been described above by using the above-described embodiment, the present invention is not limited thereto.

例えば、上記実施の形態では、室内機と室外機が冷媒配管及び制御配線等により互いに接続されたセパレート型の空気調和機で説明したが、これは室内機と室外機が一体になった室内設置型の空気調和機であってもよく、この場合、室内機と室外機が一体になったものが請求項の室内機に該当するものである。 For example, in the above embodiment, a separate type air conditioner in which the indoor unit and the outdoor unit are connected to each other by a refrigerant pipe, a control wiring, or the like has been described, but this is an indoor installation in which the indoor unit and the outdoor unit are integrated. It may be a type air conditioner, and in this case, the one in which the indoor unit and the outdoor unit are integrated corresponds to the indoor unit according to the claim.

また、熱交換器４は複数の熱交換器部４－１、４－２を連結して長尺の熱交換器としたもので説明したが、これはプレートフィン１２を積層しただけで構成した長尺寸法の単一熱交換器としたものにも適用することができる。そして、このような単一のプレートフィン積層型熱交換器とすれば、複数の熱交換機部を連結して単一の熱交換器とする必要がないので安価に提供することができる。 Further, the heat exchanger 4 has been described as a long heat exchanger in which a plurality of heat exchanger units 4-1 and 4-2 are connected to form a long heat exchanger, but this is configured only by laminating plate fins 12. It can also be applied to a single heat exchanger with long dimensions. Further, such a single plate fin laminated heat exchanger can be provided at low cost because it is not necessary to connect a plurality of heat exchanger units to form a single heat exchanger.

以上のように、今回開示した実施の形態はすべての点で例示であって制限的なものではないと考えられるべきであり、本発明の範囲は特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれるものである。 As described above, it should be considered that the embodiments disclosed this time are exemplary and not restrictive in all respects, and the scope of the present invention is indicated by the scope of claims. And all changes within the meaning and scope of equality are included.

本発明は、プレートフィンを積層して構成した熱交換器ブロックを突き合わせて構成していても、二つの熱交換器ブロックの突合せ部分に隙間が生じて熱交換されない空気が流れるのを防止でき、プレートフィン積層型熱交換器が持つ高い熱交換効率を生かしつつ空調等の熱交換性能が高い高性能な空気調和機を提供することができる。よって、家庭用及び業務用エアコン等に幅広く利用できる。 INDUSTRIAL APPLICABILITY Even if the heat exchanger blocks formed by laminating plate fins are butted against each other, the present invention can prevent air that is not heat exchanged from flowing due to a gap between the butted portions of the two heat exchanger blocks. It is possible to provide a high-performance air conditioner having high heat exchange performance such as air conditioning while utilizing the high heat exchange efficiency of the plate fin laminated heat exchanger. Therefore, it can be widely used for home and commercial air conditioners.

１ 室内機
２ 室内機本体
２ａ 開口部
３ 前面パネル
４ 熱交換器
４ａ、４ｂ 熱交換器ブロック
５ 送風ファン
６ 吹出口
７ 通風路
８ 上下風向変更羽根
９ 左右風向変更羽根
１０ フィルタ
１１ フィルタ掃除ユニット
１２ プレートフィン
１３ プレートフィン積層体
１４ エンドプレート
１５ ヘッダ流路管Ａ
１６ ヘッダ流路管Ｂ
１７ 締結手段
１８ 伝熱流路
１９ 熱交取付枠（本体構成部品）
２０ 連結部材
２０ａ 挟持片部
２１、２２ 透孔
２３ 連結部材軸
２４ 締結固定用孔
２５ ステープラー
２００ 連結部材
２２０ａ 挟持片部
２３０ 連結部材軸 1 Indoor unit 2 Indoor unit main body 2a Opening 3 Front panel 4 Heat exchanger 4a, 4b Heat exchanger block 5 Blower fan 6 Blowout 7 Ventilation passage 8 Vertical wind direction changing blade 9 Left and right wind direction changing blade 10 Filter 11 Filter cleaning unit 12 Plate fin 13 Plate fin laminate 14 End plate 15 Header flow tube A
16 Header flow path tube B
17 Fastening means 18 Heat transfer flow path 19 Heat flux mounting frame (main body component)
20 Connecting member 20a Holding piece part 21, 22 Through hole 23 Connecting member shaft 24 Fastening fixing hole 25 Stapler 200 Connecting member 220a Holding piece part 230 Connecting member shaft

Claims (1)

室内機本体と、前記室内機本体内に設けた熱交換器及び送風ファンとを備え、前記熱交換器は二つの熱交換器ブロックの上部の各プレートフィン同士を交互にオーバーラップ状態に突き合わせて前記送風ファンの前面側と背面側を覆うように構成するとともに、前記熱交換器ブロックは複数の伝熱流路を有するプレートフィンを多数積層して構成し、且つ、前記熱交換器ブロックはその上部を突き合せた状態で、前記オーバーラップした部分に設けた透孔を連結部材軸により連結した空気調和機。 The indoor unit main body is provided with a heat exchanger and a blower fan provided in the indoor unit main body, and the heat exchanger alternately abuts each plate fin on the upper part of two heat exchanger blocks in an overlapping state. The heat exchanger block is configured to cover the front side and the back side of the blower fan, and the heat exchanger block is configured by stacking a large number of plate fins having a plurality of heat transfer channels, and the heat exchanger block is above the plate fins. An air exchanger in which the through holes provided in the overlapped portion are connected by a connecting member shaft in a state where the above-mentioned parts are butted against each other.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003214724A (en) 2002-01-21 2003-07-30 Mitsubishi Heavy Ind Ltd Air conditioner

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JP2005024223A (en) * 2003-07-04 2005-01-27 Daikin Ind Ltd Indoor unit of air conditioner and seal plate of indoor heat exchanger
JP6494943B2 (en) * 2014-07-31 2019-04-03 三菱重工サーマルシステムズ株式会社 Air conditioner indoor unit
JP6785409B2 (en) * 2016-10-21 2020-11-18 パナソニックＩｐマネジメント株式会社 Heat exchanger and refrigeration system using it

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003214724A (en) 2002-01-21 2003-07-30 Mitsubishi Heavy Ind Ltd Air conditioner

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