JP2016084946A5

JP2016084946A5 -

Info

Publication number: JP2016084946A5
Application number: JP2014215842A
Authority: JP
Filing date: 2014-10-23
Publication date: 2017-08-03
Anticipated expiration: 2034-10-23

Description

上記目的を達成するために、本発明は、複数の冷媒配管を有する熱交換器、該熱交換器の前記複数の冷媒配管と接続される液分配器及びガス分配器、前記液分配器に接続される膨張弁、前記熱交換器に室内空気を流通させるための送風機、前記熱交換器の周囲及び上部を覆うように設けられ熱漏洩を抑制するための本体断熱材及び前記熱交換器の下方に設置され該熱交換器で発生するドレンを受けるためのドレンパンを備える空気調和機の室内機において、前記液分配器、前記ガス分配器及び前記膨張弁を、前記送風機による室内空気の通風路から隔離するように設けた仕切板と、該仕切板、前記本体断熱材及び前記ドレンパンにより形成された密閉空間とを設け、前記密閉空間内に、前記液分配器、ガス分配器及び膨張弁を設置すると共に、前記液分配器及びガス分配器と前記熱交換器の冷媒配管との接続部、及び前記液分配器と前記膨張弁との接続部も前記密閉空間内に配置し、更に前記密閉空間内には冷媒漏洩センサを設けていることを特徴とする。 To achieve the above object, the present invention provides a heat exchanger having a plurality of refrigerant pipes, a liquid distributor and a gas distributor connected to the plurality of refrigerant pipes of the heat exchanger, and a connection to the liquid distributor. An expansion valve, a blower for circulating indoor air in the heat exchanger, a main body heat insulating material for covering the periphery and upper part of the heat exchanger and suppressing heat leakage, and a lower part of the heat exchanger In the indoor unit of an air conditioner provided with a drain pan for receiving drain generated by the heat exchanger, the liquid distributor, the gas distributor, and the expansion valve are connected to the indoor air ventilation path by the blower. A partition plate provided so as to be isolated and a sealed space formed by the partition plate, the main body heat insulating material, and the drain pan are provided, and the liquid distributor, the gas distributor, and the expansion valve are installed in the sealed space. As well as Connection of the refrigerant pipe of the liquid distributor and the gas distributor and the heat exchanger, and the connection portion between the liquid distributor and the expansion valve is also disposed in the closed space, the more the enclosed space A refrigerant leakage sensor is provided.

また、本実施例では、前記密閉空間１８内に着火原因となる電気エネルギ等が発生しないように構成している。即ち、着火原因となる電気部品（電装品）などを収納する前記電気箱７は、前記密閉空間１８外の空気流路（通風路）側に設置されているから、密閉空間１８内で冷媒漏洩があっても、火災や爆発といった事故も確実に回避できる。 Further, in this embodiment, it is configured such that electric energy or the like that causes ignition is not generated in the sealed space 18. That is, the electric box 7 for accommodating an electric component comprising an ignition causes (electrical equipment), since is installed in the sealed space 18 outside of the air passage (air passage) side, the refrigerant leakage in the closed space 18 Even if there is, accidents such as fires and explosions can be reliably avoided.

以上述べたように、上述した本発明の実施例によれば、液分配器、ガス分配器及び膨張弁が、送風機による室内空気の通風路から隔離されるように設けた仕切板と、本体断熱材及びドレンパンとにより密閉空間を形成し、この密閉空間内に、前記液分配器、ガス分配器及び膨張弁を設置すると共に、前記液分配器及びガス分配器と前記熱交換器の冷媒配管との接続部、及び液分配器と膨張弁との接続部も前記密閉空間内に配置し、更に密閉空間内には冷媒漏洩センサを設けるように構成しているので、少ない冷媒漏洩量でも精度良く冷媒漏洩を検出することができる。しかも、漏洩冷媒は前記密閉空間内に閉じ込められるので、漏洩冷媒の密閉空間外への排出が抑制され、空気調和機の冷媒として可燃性冷媒を用いても、火災や爆発といった事故を未然に回避できる効果が得られる。 As described above, according to the embodiment of the present invention described above, the partition plate provided so that the liquid distributor, the gas distributor, and the expansion valve are isolated from the ventilation path of the indoor air by the blower, and the main body heat insulation A sealed space is formed by the material and the drain pan, and the liquid distributor, the gas distributor, and the expansion valve are installed in the sealed space, and the refrigerant pipe of the liquid distributor, the gas distributor, and the heat exchanger, And the connection portion between the liquid distributor and the expansion valve are also arranged in the sealed space, and the refrigerant leakage sensor is provided in the sealed space. Refrigerant leakage can be detected. In addition, since the leaked refrigerant is confined in the sealed space, discharge of the leaked refrigerant to the outside of the sealed space is suppressed, and accidents such as fires and explosions can be avoided even if a flammable refrigerant is used as the air conditioner refrigerant. The effect that can be obtained.

即ち、本実施例では、液分配器、ガス分配器、膨張弁などの機器を、送風機の空気流路（通風路）外に設けた密閉空間内に配置し、これらの機器に接続される配管の接続部（溶接部）を密前記閉空間内に閉じ込め、密閉空間内の前記溶接部近傍に冷媒漏洩センサ（冷媒漏洩検出手段）を設けているので、少ない冷媒漏洩量でも正確に冷媒漏洩を検出することが可能となる。
In other words, in this embodiment, devices such as a liquid distributor, a gas distributor, and an expansion valve are arranged in a sealed space provided outside the air flow path (ventilation path) of the blower and are connected to these devices. The connection part (welded part) is tightly confined in the closed space, and a refrigerant leak sensor (refrigerant leak detection means) is provided in the vicinity of the welded part in the sealed space. It becomes possible to detect.

Claims

A heat exchanger having a plurality of refrigerant pipes, a liquid distributor and a gas distributor connected to the plurality of refrigerant pipes of the heat exchanger, an expansion valve connected to the liquid distributor, and an indoor air to the heat exchanger A blower for circulating the heat, a main body heat insulating material provided to cover the periphery and upper part of the heat exchanger, and a drain generated in the heat exchanger installed below the heat exchanger. In an air conditioner indoor unit equipped with a drain pan for receiving,
A partition plate provided so as to isolate the liquid distributor, the gas distributor and the expansion valve from the ventilation path of the indoor air by the blower;
The partition plate, the main body heat insulating material and a sealed space formed by the drain pan,
The liquid distributor, the gas distributor, and the expansion valve are installed in the sealed space, the liquid distributor and the connection portion between the gas distributor and the refrigerant pipe of the heat exchanger, and the liquid distributor and the An indoor unit for an air conditioner, wherein a connection portion with an expansion valve is also disposed in the sealed space, and a refrigerant leakage sensor is provided in the sealed space.

The indoor unit for an air conditioner according to claim 1, wherein a combustible refrigerant is used as a refrigerant for the air conditioner.

The indoor unit of the air conditioner according to claim 1, further comprising an electric box containing electrical components such as a control device for controlling the expansion valve and the blower, the electric box being outside the sealed space and by the blower. An indoor unit for an air conditioner, wherein the indoor unit is provided in a ventilation path for indoor air.

The indoor unit of the air conditioner according to claim 1, wherein a connection portion between the liquid distributor and the gas distributor and a refrigerant pipe of the heat exchanger, and a connection portion between the liquid distributor and the expansion valve are welded. The indoor unit of an air conditioner is characterized in that the refrigerant leakage sensor is provided in the vicinity of a welded portion joined by welding.

The indoor unit of the air conditioner according to claim 4, wherein a connection part between a liquid side pipe of the air conditioner connected to the indoor unit and the expansion valve, a gas side pipe of the air conditioner and the gas distributor, The air conditioner indoor unit is characterized in that the connecting portions are also joined by welding, and these welded portions are also arranged in the sealed space.

6. The indoor unit of an air conditioner according to claim 5, wherein the liquid distributor is connected to one end side of each refrigerant pipe of the heat exchanger by welding via a plurality of liquid distribution pipes. Is connected to the other end of each refrigerant pipe of the heat exchanger via a plurality of gas distribution pipes by welding, and the liquid distributor is connected to the expansion valve via a connection pipe by welding. An air conditioner indoor unit characterized in that the unit is also disposed in the sealed space.

The indoor unit of the air conditioner according to claim 1, wherein the detection unit of the refrigerant leakage sensor is installed at a position on the lower side in the sealed space.

The indoor unit of an air conditioner according to claim 1, wherein the refrigerant leakage sensor is inserted and attached from the outside to the inside of the sealed space.

9. The indoor unit of an air conditioner according to claim 8, wherein the indoor unit is a ceiling cassette type four-direction blowout type indoor unit (a top-cassette four-way indoor unit), and a refrigerant is provided in the drain pan below the sealed space. A leakage sensor mounting hole is provided, and the refrigerant leakage sensor is inserted into and fixed to the refrigerant leakage sensor mounting hole from the lower side of the drain pan toward the inside of the sealed space . Indoor unit.