JPWO2020110226A1 - Outdoor unit - Google Patents

Abstract

An outdoor unit whose outer shell is covered with a housing panel. The housing panel has an opening that communicates with the internal machine room, and only the surface facing the opening opens in the opening. The outdoor unit cover is detachably provided, and the outdoor unit cover includes a relay pipe provided between the refrigerant pipes arranged in the outdoor unit, a shutoff valve provided in the relay pipe to block the flow of the refrigerant, and a shutoff valve. It has a shutoff valve and a fixing portion for fixing at least one of the relay pipes. As a result, a space communicating with the internal machine room can be provided, the space can be secured as an installation space for the shutoff valve, and the shutoff valve can be easily installed.

Description

The present invention relates to an outdoor unit connected to an indoor unit via a refrigerant pipe through which a refrigerant flows.

Conventionally, as an outdoor unit, for example, the outdoor unit described in Patent Document 1 is known. This outdoor unit is an outdoor unit of an air conditioner, and an operation valve used when connecting a refrigerant pipe to the indoor unit is fixed to the bottom plate of the outdoor unit. The circumference of the operation valve is covered with a cover.

By the way, in recent years, from the viewpoint of global warming countermeasures, it has been required to switch the refrigerant used for the outdoor unit to a refrigerant having a low global warming potential. Therefore, as such a refrigerant, HFC32, which has a lower global warming potential than HFC410A, is the mainstream.

However, such HFC32 is slightly flammable. In addition, many other refrigerants with a low global warming potential are flammable regardless of the degree of flammability. As such a refrigerant having a low global warming potential, it is also considered to replace it with _{LP gas or CO 2 having a smaller environmental load in the future, and further consideration for safety is required.}

Here, it is assumed that a certain period of time elapses without the user noticing the leakage of the flammable refrigerant. In this case, since ventilation is not performed in the room where the indoor unit where the refrigerant is leaking is installed and the refrigerant is not diffused, there is a possibility that the accumulated refrigerant may cause a portion having a high refrigerant concentration.
In particular, when an indoor unit such as a household cold / hot water supply air-conditioning heat pump model that uses flammable refrigerant is installed in a narrow space such as a storage shed, there is a risk that the concentration of refrigerant in the air may increase in an emergency when a refrigerant leaks. there were.

Therefore, in recent outdoor units, in order to ensure safety in an emergency, there is an increasing tendency to provide a shutoff valve in the refrigerant pipe connecting the outdoor unit and the indoor unit. In such an outdoor unit, by providing a shutoff valve in the refrigerant pipe connecting the outdoor unit and the indoor unit, the supply of the refrigerant from the outdoor unit to the indoor unit is cut off when the flammable refrigerant leaks, and the indoor unit is concerned. Since the machine can be isolated, it is possible to avoid the spread of refrigerant leakage.

Japanese Unexamined Patent Publication No. 2014-074544

However, in conventional outdoor units such as the outdoor unit of Patent Document 1, miniaturization and space saving are progressing, and it is difficult to secure a space for installing such a shutoff valve. Installation was not easy.

An object of the present invention is to solve the above problems, and an object of the present invention is to secure an installation space for a shutoff valve and to provide an outdoor unit in which the shutoff valve can be easily installed.

The outdoor unit according to the present invention is an outdoor unit whose outer shell is covered with a housing panel, and the housing panel has an opening communicating with an internal machine room. An outdoor unit cover having only a surface facing the opening is detachably provided, and the outdoor unit cover is a relay pipe provided between a refrigerant pipe arranged in the outdoor unit and the relay. It has a shutoff valve provided in the pipe for shutting off the flow of the refrigerant, and a fixing portion for fixing at least one of the shutoff valve and the relay pipe.

According to the outdoor unit according to the present invention, a relay pipe, a shutoff valve, and these shutoff valves are provided on the outdoor unit cover that is detachably provided with respect to the opening that communicates with the machine room provided in the housing panel of the outdoor unit. And a fixing part for fixing at least one of the relay pipes. Therefore, a space communicating with the machine room inside the outdoor unit is provided in the outdoor unit cover, and the space can be secured as an installation space for the shutoff valve, so that the shutoff valve can be easily installed.

It is a front view which shows the appearance of the outdoor unit which concerns on Embodiment 1 of this invention. It is a side view which shows the appearance of the outdoor unit which concerns on Embodiment 1 of this invention. It is a rear view which shows the appearance of the outdoor unit which concerns on Embodiment 1 of this invention. It is a rear perspective view which shows the appearance of the outdoor unit which concerns on Embodiment 1 of this invention. It is the schematic which shows the inside of the outdoor unit of FIG. 1 seen from above. It is a schematic diagram which shows the refrigerant circuit of the air conditioner using the outdoor unit of FIG. It is an internal perspective view which shows the main part of the outdoor unit of FIG. It is an external perspective view which shows the main part of the outdoor unit of FIG. It is a partial cross-sectional view which shows the internal structure of the outdoor unit cover of FIG. It is the schematic which shows the bottom surface part of the outdoor unit cover of FIG. 7 seen from above.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the forms of the components shown in the entire specification are merely examples and are not limited to these descriptions. That is, the present invention can be appropriately modified as long as it does not contradict the gist or idea of the invention that can be read from the claims and the entire specification. Further, an outdoor unit accompanied by such a change is also included in the technical idea of the present invention. Further, in each figure, those having the same reference numerals are the same or equivalent thereof, which are common in the whole text of the specification. The outdoor unit is not limited to an air conditioner, and an outdoor unit installed in a low temperature device, a hot water supply device, or the like can be widely applied.

Embodiment 1.
<Configuration of outdoor unit 1>
The outdoor unit 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a front view showing the appearance of the outdoor unit according to the first embodiment of the present invention. FIG. 2 is a side view showing the appearance of the outdoor unit according to the first embodiment of the present invention. FIG. 3 is a rear view showing the appearance of the outdoor unit according to the first embodiment of the present invention. FIG. 4 is a rear perspective view showing the appearance of the outdoor unit according to the first embodiment of the present invention. FIG. 5 is a schematic view showing the inside of the outdoor unit of FIG. 1 as viewed from above.

As shown in FIGS. 1 to 5, in the outdoor unit 1, the housing panel 2 covering the outer shell is formed in a rectangular parallelepiped shape. The inside of the housing panel 2 is divided into an air passage chamber 4 and a machine room 5 by a partition plate 3. A propeller fan 6 is installed on the front side of the housing panel 2 in the air passage chamber 4. Further, on the back side of the propeller fan 6 in the air passage chamber 4, an outdoor heat exchanger 53 mounted in an L shape from the back side to the side surface side of the air passage chamber 4 of the housing panel 2 is installed.

The housing panel 2 is composed of a front upper outer panel 2a, a front lower outer panel 2b, and a back upper outer panel 2c, and surrounds four side surfaces of the machine room 5 together with the partition plate 3.
The configuration of the housing panel 2 of the machine room 5 described above is an example, and the number of parts of the housing panel 2 or the position of the seam is not limited. For example, it may be an outdoor unit using a front outer panel in which the front upper outer panel 2a and the front lower outer panel 2b are integrated.

The propeller fan 6 is provided with a plurality of blades 6b on the outer periphery of the boss 6a, which is the center of rotation, and is rotationally driven by a fan motor (not shown). Further, the front upper outer panel 2a located on the front side of the propeller fan 6 in the housing panel 2 has a slit-shaped blow for discharging the air inside the housing panel 2 to the outside of the housing panel 2. An exit 2d is provided. Although not shown in detail, the outdoor heat exchanger 53 has a structure including a heat transfer tube for flowing a refrigerant and fins for increasing the heat transfer area between the refrigerant flowing through the heat transfer tube and the outside air. ing.

Although not shown here, the machine room 5 is provided with a compressor 51 that is connected to the outdoor heat exchanger 53 via a refrigerant pipe 41a and supplies the refrigerant to the outdoor heat exchanger 53 (). See FIG. 6 below). Further, in the machine room 5, electric parts such as a power module and an inverter board are installed, including a current sensor that detects whether or not the outdoor unit 1 is operating.

In the case of the first embodiment, the housing panel 2 is on the back side of the front lower outer shell panel 2b, and the opening 2e (which communicates with the internal machine room 5 is located below the back upper outer shell panel 2c in the vertical direction. (See FIG. 9 described later). The opening 2e is covered with the outdoor unit cover 10.

Further, in the machine room 5, a refrigerant pipe 11 for circulating a refrigerant is arranged. The refrigerant pipe 11 is provided with a closing valve 12 for the outdoor unit 1 at one end thereof, and a relay pipe 13 (see FIG. 6 or FIG. 7 described later) in which the other end is arranged on the outdoor unit cover 10. ) Is connected. In the case of the first embodiment, the closing valve 12 is composed of a closing valve 12a for gas and a closing valve 12b for liquid. Here, the closing valve 12 is, for example, a valve that can be manually switched between opening and closing, and when a refrigerant pipe (not shown) is connected via the closing valve 12, it is manually switched from the closed state to the open state. Therefore, the refrigerant can be circulated with the connected refrigerant pipe.

<About the refrigerant circuit>
Here, the refrigerant circuit of the air conditioner 100 using the outdoor unit 1 in the first embodiment will be described with reference to FIG. FIG. 6 is a schematic view showing a refrigerant circuit of the air conditioner 100 using the outdoor unit 1 of FIG. As shown in FIG. 6, the air conditioner 100 heats or cools the room to perform air conditioning by transferring heat between the outside air and the air in the room via a refrigerant. The air conditioner 100 includes an outdoor unit 1 and an indoor unit 40. In the first embodiment, the case where one indoor unit 40 is installed for the outdoor unit 1 will be described, but the present invention is not limited to this, and a plurality of indoor units 40 may be installed.

In the air conditioner 100, the outdoor unit 1 and the indoor unit 40 are connected by piping pipes 41a and 41b to form a refrigerant circuit 50 in which the refrigerant circulates. In the refrigerant circuit 50 of the air conditioner 100, the compressor 51, the flow path switching device 52, the outdoor heat exchanger 53, the expansion valve 54, and the indoor heat exchanger 55 are connected via the refrigerant pipes 41a and 41b. ..

The outdoor unit 1 includes a compressor 51, a flow path switching device 52, an outdoor heat exchanger 53, and an expansion valve 54. The compressor 51 compresses and discharges the sucked refrigerant. Here, the compressor 51 may be provided with an inverter device, and may be configured so that the capacity of the compressor 51 can be changed by changing the operating frequency by the inverter device. The capacity of the compressor 51 is the amount of refrigerant delivered per unit time. The flow path switching device 52 is, for example, a four-way valve, which switches the direction of the refrigerant flow path.

The air conditioner 100 can realize a heating operation or a cooling operation by switching the flow of the refrigerant by using the flow path switching device 52 based on an instruction from the control unit (not shown). The outdoor heat exchanger 53 exchanges heat between the refrigerant and the outdoor air. The outdoor heat exchanger 53 acts as an evaporator during the heating operation, exchanges heat between the low-pressure refrigerant flowing in from the refrigerant pipe 41b and the outdoor air to evaporate and vaporize the refrigerant, and vaporizes the refrigerant on the refrigerant pipe 41a side. Leak to. The outdoor heat exchanger 53 acts as a condenser during the cooling operation, and exchanges heat between the compressed refrigerant and the outdoor air by the compressor 51 flowing in from the flow path switching device 52 side to exchange the refrigerant. Condense and liquefy. The outdoor heat exchanger 53 is provided with an outdoor blower 56 in order to increase the efficiency of heat exchange between the refrigerant and the outdoor air. The outdoor blower 56 may be equipped with an inverter device to change the operating frequency of the fan motor to change the rotation speed of the fan. The expansion valve 54 is a throttle device (flow rate control means), functions as an expansion valve by adjusting the flow rate of the refrigerant flowing through the expansion valve 54, and adjusts the pressure of the refrigerant by changing the opening degree. For example, when the expansion valve 54 is composed of an electronic expansion valve or the like, the opening degree is adjusted based on an instruction from a control unit or the like.

The indoor unit 40 includes an indoor heat exchanger 55 that exchanges heat between the refrigerant and the indoor air, and a blower 57 that adjusts the flow of air that the indoor heat exchanger 55 exchanges heat with. At this time, the indoor unit 40 may have a refrigerant sensor 58 that detects that the refrigerant used in the refrigerant circuit 50 has leaked. In this case, if the refrigerant sensor 58 detects the leakage of the refrigerant, the gas shutoff valve 14a and the liquid shutoff valve 14b, which will be described later, are switched from the open state to the closed state by the control of the control unit based on the detection result. .. As a result, the flow of the refrigerant between the outdoor unit 1 and the indoor unit 40 can be blocked, and the indoor unit 40 in which the refrigerant leaks can be isolated.

The indoor heat exchanger 55 acts as a condenser during the heating operation, exchanges heat between the refrigerant flowing in from the refrigerant pipe 41a and the indoor air, condenses the refrigerant and liquefies it, and moves it to the refrigerant pipe 41b side. Let it flow out. The indoor heat exchanger 55 acts as an evaporator during the cooling operation, exchanges heat between the refrigerant put into a low pressure state by the expansion valve 54 and the indoor air, and causes the refrigerant to take away the heat of the air and evaporate it. It is vaporized and discharged to the refrigerant pipe 41a side. The operating speed of the blower 57 is determined by the user's setting. An inverter device may be attached to the blower 57 to change the operating frequency of the fan motor to change the rotation speed of the fan.

<Operation example of cooling and heating operation of air conditioner 100>
Next, the operation of the cooling operation will be described as an operation example of the air conditioner 100. The high-temperature and high-pressure gas refrigerant compressed and discharged by the compressor 51 flows into the outdoor heat exchanger 53 via the flow path switching device 52. The gas refrigerant that has flowed into the outdoor heat exchanger 53 is condensed by heat exchange with the outside air blown by the outdoor blower 56, becomes a low-temperature refrigerant, and flows out of the outdoor heat exchanger 53. The refrigerant flowing out of the outdoor heat exchanger 53 is expanded and depressurized by the expansion valve 54 to become a low-temperature low-pressure gas-liquid two-phase refrigerant. This gas-liquid two-phase refrigerant flows into the indoor heat exchanger 55 of the indoor unit 40, evaporates by heat exchange with the indoor air blown by the blower 57, becomes a low-temperature low-pressure gas refrigerant, and becomes the indoor heat exchanger 55. Outflow from. At this time, the indoor air that has been endothermic and cooled by the refrigerant becomes air-conditioned air (blown air) and is blown out from the indoor unit 40 to the air-conditioned space. The gas refrigerant flowing out of the indoor heat exchanger 55 is sucked into the compressor 51 via the flow path switching device 52 and compressed again. In the cooling operation of the air conditioner 100, the above operations are repeated (indicated by solid arrows in the figure).

Next, the operation of the heating operation will be described as an operation example of the air conditioner 100. The high-temperature and high-pressure gas refrigerant compressed and discharged by the compressor 51 flows into the indoor heat exchanger 55 of the indoor unit 40 via the flow path switching device 52. The gas refrigerant flowing into the indoor heat exchanger 55 condenses by heat exchange with the indoor air blown by the blower 57, becomes a low-temperature refrigerant, and flows out from the indoor heat exchanger 55. At this time, the indoor air that has been warmed by receiving heat from the gas refrigerant becomes air-conditioned air (blown air) and is blown out from the indoor unit 40 to the air-conditioned space. The refrigerant flowing out of the indoor heat exchanger 55 is expanded and depressurized by the expansion valve 54 to become a low-temperature low-pressure gas-liquid two-phase refrigerant. This gas-liquid two-phase refrigerant flows into the outdoor heat exchanger 53 of the outdoor unit 1, evaporates by heat exchange with the outside air blown by the outdoor blower 56, becomes a low-temperature low-pressure gas refrigerant, and becomes the outdoor heat exchanger 53. Outflow from. The gas refrigerant flowing out of the outdoor heat exchanger 53 is sucked into the compressor 51 via the flow path switching device 52 and compressed again. In the heating operation of the air conditioner 100, the above operation is repeated (indicated by the broken line arrow in the figure).

<Structure of outdoor unit cover 10>
Next, the outdoor unit cover 10 provided in the outdoor unit 1 according to the first embodiment will be described with reference to FIGS. 7 to 10. FIG. 7 is an internal perspective view showing a main part of the outdoor unit of FIG. FIG. 8 is an external perspective view showing a main part of the outdoor unit of FIG. FIG. 9 is a partial cross-sectional view showing the internal structure of the outdoor unit cover of FIG. FIG. 10 is a schematic view showing the bottom surface of the outdoor unit cover of FIG. 7 as viewed from above.

As shown in FIGS. 7 to 10, the outdoor unit cover 10 is composed of a rectangular pentahedron in which only the surface 10a facing the opening 2e of the rear upper outer panel 2c in the housing panel 2 is open. It is detachably provided with respect to the upper rear outer panel 2c so as to cover 2e.

The outdoor unit cover 10 has a shape protruding outward when attached to the rear upper outer panel 2c of the housing panel 2, and is a shutoff valve installed in the internal space E of the outdoor unit cover 10. It covers the five sides around 14. Here, the shutoff valve 14 is a solenoid valve whose opening and closing is controlled by a control unit (not shown). For example, when the control unit determines that a refrigerant leak has occurred, the control unit automatically closes the valve from the open state. It is switched to the state and shuts off the flow of the refrigerant.

The outdoor unit cover 10 is provided with a relay pipe 13 connected to the refrigerant pipe 11 arranged in the machine room 5 of the outdoor unit 1 and a shutoff valve 14 provided in the relay pipe 13 for blocking the flow of the refrigerant. ing. Further, the outdoor unit cover 10 is provided with a fixing portion 15 for fixing at least one of the shutoff valve 14 and the relay pipe 13.

A pipe joint 16 is attached to one end of the relay pipe 13, so that the refrigerant pipe connected to the indoor unit 40 can be easily connected in the on-site construction when the air conditioner 100 is installed. (See Fig. 6). Further, the relay pipe 13 has a pipe joint 17 attached to the other end thereof, and can be connected to the refrigerant pipe 11 arranged in the machine room 5 via the pipe joint 17.

In the case of the first embodiment, two types of shutoff valves 14 are arranged: a gas shutoff valve 14a that shuts off the gas relay pipe 13 and a liquid shutoff valve 14b that shuts off the liquid relay pipe 13. .. Further, two types of pipe joints 17 are arranged: a gas pipe joint 17a attached to the end of the gas relay pipe 13 and a liquid pipe joint 17b attached to the end of the liquid relay pipe 13. ing. The gas shutoff valve 14a, the liquid shutoff valve 14b, and the relay pipe 13 are each fixed in the outdoor unit cover 10 by the fixing portion 15, and are integrally formed with the outdoor unit cover 10.

Further, the outdoor unit cover 10 has a structure in which the bottom surface portion 18 located below in the vertical direction is inclined downward toward the open surface 10a of the outdoor unit cover 10. Further, the outdoor unit cover 10 is provided with a claw portion 19 at the center of the bottom surface portion 18 at the end portion on the opening 2e side. The claw portion 19 has a structure that engages with a flange portion 31 as an engaging portion provided around the bottom plate 30 in which the compressor 51 and the like of the opening 2e in the housing panel 2 are installed.

Further, the outdoor unit cover 10 is provided with water guide portions 20 inclined from both side portions of the bottom surface portion 18 toward the claw portions 19 on both sides of the claw portions 19 at the end portion of the bottom surface portion 18 on the opening 2e side. Further, the outdoor unit cover 10 has a structure in which the upper surface portion 21 located above in the vertical direction is inclined upward toward the open surface 10a of the outdoor unit cover 10.

In the outdoor unit 1 configured in this way, when the outdoor unit cover 10 is installed in the outdoor unit 1, the shutoff valve 14 is first fixed to the fixing portion 15 inside the outdoor unit cover 10 and then connected to the relay pipe 13. The refrigerant pipe 11 is connected to the pipe joint 17 via a pipe joint 17. Then, the claw portion 19 of the outdoor unit cover 10 is temporarily fixed by engaging with the flange portion 31 of the bottom plate 30 of the outdoor unit 1, and the flange portion 31, the front lower outer shell panel 2b and the back upper upper outer shell are provided with screws (not shown). It is fixed to the panel 2c. After that, the refrigerant pipe 11 and the closing valve 12 are connected, and the pipe joint 16 attached to the other end of the shutoff valve 14 and the indoor unit 40 are connected by the refrigerant pipes 41a and 41b.

In this way, since the shutoff valve 14 is provided in the piping path connecting the outdoor unit 1 and the indoor unit 40, the supply of the refrigerant from the outdoor unit 1 to the indoor unit can be cut off by operating the shutoff valve 14. Can be done. Further, since the shutoff valve 14 is fixed to the outdoor unit cover 10, the shutoff valve 14 is prevented from moving due to vibration during transportation and operation, and the relay pipe 13 connected to the shutoff valve 14 is prevented from being deformed or damaged. be able to. Further, since the shutoff valve 14 has five peripheral surfaces covered with the outdoor unit cover 10 and the remaining one facing the machine room 5 of the outdoor unit 1, the shutoff valve 14 is not exposed to the outside air. .. Therefore, it is possible to prevent the shutoff valve 14 from being exposed to rain and wind, and it is possible to prevent the user from coming into contact with parts such as the shutoff valve 14 and the electrical wiring associated therewith, and it is possible to prevent damage and damage.

Further, the outdoor unit cover 10, the relay pipe 13 and the shutoff valve 14 are integrated, and the relay pipe 13 provided with the shutoff valve 14 and the refrigerant pipe 11 are connected via a pipe joint 17 to connect with the refrigerant pipe 11. The refrigerant pipes 41a and 41b of the outdoor unit 1 are detachable via the closing valve 12. As a result, the outdoor unit cover 10 can be easily retrofitted to the outdoor unit 1. Further, since the outdoor unit cover 10 protrudes outward as compared with the other housing panels 2, the pipes attached to the shutoff valve 14 excluding the shutoff valve 14 and the relay pipe 13 are covered with the outdoor unit cover 10. It is configured to fit in the internal space E. As a result, the shutoff valve 14 interferes with the internal structure of the machine room 5 and the existing internal parts in response to changes in the installation environment even in the outdoor unit 1 having the shutoff valve 12 which was not originally planned to incorporate the shutoff valve 14. It can be retrofitted by appropriately changing the shape of the relay pipe 13. That is, it is also possible to sell the outdoor unit cover 10 including the shutoff valve 14 and the relay pipe 13 as an optional product of the outdoor unit 1.

Since the bottom surface portion 18 of the outdoor unit cover 10 is inclined downward toward the open surface 10a, the shutoff valve 14 and the relay pipe 13 attached to the shutoff valve 14 and the like condense, and the condensed water is condensed on the bottom surface portion 18. If it falls, this condensed water will flow to the outdoor unit 1 side. Further, since the water guiding portions 20 are installed on both sides of the bottom surface portion 18, no matter where the condensed water drips on the bottom surface portion 18, the inclination of the bottom surface portion 18 causes the condensed water to flow to the machine room 5 side of the outdoor unit 1. , It flows down from the central claw portion 19 along the water guiding portion 20 into the bottom plate 30 of the outdoor unit 1. The bottom plate 30 of the outdoor unit 1 is provided with a plurality of dew condensation water drain holes (not shown), and is discharged together with the dew condensation water generated from other parts such as the outdoor heat exchanger 53 in the outdoor unit 1.

In this way, the outdoor unit cover 10 has a structure in which the bottom surface portion 18 is inclined to intensively drain the dew condensation water generated in the internal space E from the vicinity of the claw portion 19, so that water does not collect in the internal space E. , It is possible to prevent the foul odor and corrosion caused by the dew condensation water staying.

Further, the outdoor unit cover 10 has a structure in which the upper surface portion 21 is provided with an ascending inclination toward the housing panel 2, so that rainwater and snow accumulated due to rainfall and snowfall slide down from above the outdoor unit cover 10 due to its own weight. ing. That is, since it is possible to prevent snow from accumulating on the upper surface portion 21 of the outdoor unit cover 10, it is possible to prevent a load from being applied to the housing panel 2, and by not applying a load to the housing panel 2, the housing panel 2 itself It is possible to avoid damage to the joints between panels where deformation and stress are likely to be concentrated.

<Effect in Embodiment 1>
As described above, in the outdoor unit 1 of the first embodiment, the housing panel 2 of the outdoor unit 1 is provided with an opening 2e that communicates with the internal machine room 5, and the opening 2e is opened. The outdoor unit cover 10 having an opening only on the surface 10a facing the portion 2e is detachably provided. The outdoor unit cover 10 has a relay pipe 13, a shutoff valve 14 provided in the relay pipe 13, and a fixing portion 15 for fixing at least one of the cutoff valve 14 and the relay pipe 13. Therefore, the internal space E communicating with the machine room 5 inside the outdoor unit 1 is provided in the outdoor unit cover 10, and the internal space E can be secured as the installation space for the shutoff valve 14, so that the shutoff valve 14 can be easily installed. it can.

Moreover, since the shutoff valve 14 and the relay pipe 13 are arranged in the outdoor unit cover 10 that is detachable from the housing panel 2 via the fixing portion 15, the shutoff valve 14 extends into the outdoor unit 1. It is possible to prevent the wiring from being exposed and the wiring from being directly contacted from the outside. Therefore, it is possible to prevent the wiring from being damaged or damaged. Not only that, since the shutoff valve 14 and the relay pipe 13 are arranged in the outdoor unit cover 10, it is possible to prevent the vehicle from being exposed to the outside air even in an environment such as rain or wind. Moreover, since the outdoor unit cover 10 is removable, it is also excellent in maintainability.

1 Outdoor unit, 2 Housing panel, 2a Front upper outer panel, 2b Front lower outer panel, 2c Rear upper outer panel, 2d Air outlet, 2e Opening, 3 Partition plate, 4 Air passage room, 5 Machine room, 6 Propeller Fan, 6a boss, 6b blade, 10 outdoor unit cover, 10a surface, 11 refrigerant piping, 12 closing valve, 12a gas closing valve, 12b liquid closing valve, 13 relay piping, 14 shutoff valve, 14a gas shutoff valve, 14b Liquid shutoff valve, 15 Fixing part, 16 Piping joint, 17 Piping joint, 17a Gas piping joint, 17b Liquid piping joint, 18 Bottom part, 19 Claw part, 20 Water conducting part, 21 Top part, 30 Bottom plate, 31 Flange, 40 Indoor unit, 41a Refrigerant piping, 41b Refrigerant piping, 50 Refrigerant circuit, 51 Compressor, 52 Flow path switching device, 53 Outdoor heat exchanger, 54 Expansion valve, 55 Indoor heat exchanger, 56 Outdoor blower, 57 Blower, 58 refrigerant sensor, 100 air conditioner, E internal space.

The outdoor unit according to the present invention is an outdoor unit whose outer shell is covered with a housing panel, and the housing panel has an opening communicating with an internal machine room. An outdoor unit cover having only a surface facing the opening is detachably provided, and the outdoor unit cover is attached to a relay pipe connected to a refrigerant pipe arranged in the outdoor unit and the relay pipe. a shutoff valve for blocking the flow of the provided that refrigerant, and a fixing portion for fixing at least one of the shut-off valve and the relay pipes is one having therein.

Claims (5)

An outdoor unit whose outer shell is covered with a housing panel.
The housing panel has an opening that communicates with the internal machine room.
In the opening
An outdoor unit cover is detachably provided so that only the surface facing the opening is open.
The outdoor unit cover is
A relay pipe connected to the refrigerant pipe arranged in the outdoor unit, and
A shutoff valve provided in the relay pipe that shuts off the flow of the refrigerant,
An outdoor unit having a blocking valve and a fixing portion for fixing at least one of the relay pipes. The outdoor unit cover is
The outdoor unit according to claim 1, wherein the bottom surface portion located below in the vertical direction is inclined downward toward the opening. The outdoor unit cover is
The outdoor unit according to claim 2, wherein a claw portion that engages with an engaging portion provided around the opening in the housing panel is provided at the center of the bottom surface portion on the opening side end. .. The outdoor unit cover is
The outdoor unit according to claim 3, wherein water guiding portions inclined from both side portions of the bottom surface portion toward the claw portion are provided on both sides of the claw portion at the opening side end portion of the bottom surface portion. The outdoor unit cover is
The outdoor unit according to any one of claims 1 to 4, wherein the upper surface portion located above in the vertical direction is inclined upward toward the opening.

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