CN213514157U

CN213514157U - Integral air conditioner

Info

Publication number: CN213514157U
Application number: CN202022223281.0U
Authority: CN
Inventors: 邓景文; 江敬强; 刘刚
Original assignee: GD Midea Air Conditioning Equipment Co Ltd; Chongqing Midea Refrigeration Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd; Chongqing Midea Refrigeration Equipment Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-22
Anticipated expiration: 2030-09-30

Abstract

The utility model discloses an integral air conditioner, this integral air conditioner include interior machine casing, water collector and outer machine casing, be equipped with indoor side heat exchanger in the interior machine casing. The water pan is arranged in the inner machine shell and is positioned below the indoor side heat exchanger, and a water outlet is arranged at the lowest position of the water pan in a penetrating manner. The outdoor unit shell is connected with the indoor unit shell, an outdoor heat exchanger is arranged in the outdoor unit shell, and the condensed water discharged from the water outlet is used for cooling the outdoor heat exchanger. The utility model discloses technical scheme can utilize the comdenstion water to cool down outdoor side heat exchanger, promotes heat exchange efficiency.

Description

Integral air conditioner

Technical Field

The utility model relates to an air conditioner technical field, in particular to integral air conditioner.

Background

In the current integral air conditioner, a water receiving disc is generally required to be arranged below an indoor side heat exchanger for discharging condensed water produced by the outdoor side heat exchanger, however, at present, a pipeline is generally arranged for directly discharging the condensed water outdoors, and the utilization of the condensed water is insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an integral air conditioner aims at utilizing the comdenstion water to cool down outdoor side heat exchanger, promotes heat exchange efficiency.

In order to achieve the above object, the present invention provides an integral air conditioner, including:

the indoor unit comprises an indoor unit shell, wherein an indoor side heat exchanger is arranged in the indoor unit shell;

the water pan is arranged in the inner machine shell and is positioned below the indoor side heat exchanger, and a water outlet is arranged at the lowest position of the water pan in a penetrating manner; and the number of the first and second groups,

and the outdoor machine shell is connected with the indoor machine shell, an outdoor heat exchanger is arranged in the outdoor machine shell, and the condensed water discharged from the water outlet is used for cooling the outdoor heat exchanger.

Optionally, the bottom wall of the water-tray is gradually inclined downwards in a direction towards the water outlet.

Optionally, the drain opening is arranged at one end of the water receiving tray, and the bottom wall of the water receiving tray gradually inclines downwards from the other end of the water receiving tray towards the drain opening.

Optionally, the integral air conditioner further comprises a water guide member, one end of the water guide member is arranged at the water outlet, and the other end of the water guide member extends towards the outer machine shell so as to guide the condensed water discharged from the water outlet to the outdoor heat exchanger for cooling.

Optionally, the water guide member is a water guide pipe, one end of the water guide pipe is communicated with the water outlet, and the other end of the water guide pipe extends towards the outer machine shell.

Optionally, the water conduit is a rigid pipe body or a hose.

Optionally, a water discharge joint communicated with the water discharge port is arranged below the water receiving tray, and the water guide pipe is sleeved on the water discharge joint.

Optionally, the outer machine casing is provided with a fixing structure, and the fixing structure is connected with the water guide to limit the movement of the water guide.

Optionally, the fixing structure includes at least one fixing buckle, the fixing buckle includes a limiting portion and a connecting portion connected to the outer side of the limiting portion, the connecting portion is connected to the outer casing, and the water guide member is sleeved with the limiting portion.

Optionally, the limiting part is provided with an installation notch, and the water guide piece is clamped into the limiting part from the installation notch and is in interference fit with the limiting part.

Optionally, the unitary air conditioner further comprises a drain pump, a water inlet of the drain pump is communicated with the drain opening, and the drain pump is used for pumping out the condensed water in the water pan from the drain opening.

Optionally, the outdoor unit casing includes an indoor section and an outdoor section, the indoor unit casing is disposed on an upper side of the indoor section, a compressor is disposed in the indoor section, and the compressor is connected to the indoor heat exchanger and the outdoor heat exchanger through refrigerant pipelines.

The utility model discloses among the technical scheme, the comdenstion water through utilizing indoor side heat exchanger to produce cools down to outdoor side heat exchanger for the comdenstion water has obtained better utilization, can promote the heat exchange efficiency of outdoor side heat exchanger, and the temperature of comdenstion water is lower moreover, and is better to the radiating effect of outdoor side heat exchanger. And through wearing to locate the extreme low position of water collector with the outlet, so make the comdenstion water in the water collector can all discharge to can make full use of the comdenstion water that indoor side heat exchanger produced cool down outdoor side heat exchanger, promoted the heat exchange efficiency of outdoor side heat exchanger.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of the unitary air conditioner of the present invention;

fig. 2 is a partial structural view of the interior of the unitary air conditioner of fig. 1;

FIG. 3 is a sectional view of the water pan in FIG. 2;

FIG. 4 is an enlarged view taken at A in FIG. 2;

fig. 5 is a sectional view of the base plate and the outdoor side heat exchanger in fig. 2.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Inner machine shell	42	Water fetching wheel
20	Indoor side heat exchanger	43	Indoor section
				30	Water pan	44	Outdoor section
31	Water outlet	50	Outdoor side heat exchanger
				32	Drainage joint	60	Water guide member
40	Outer machine casing	70	Fixing buckle
				41	Outer machine chassis	71	Connecting part
411	Water fetching groove	72	Limiting part
				412	Water fetching area

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an integral air conditioner.

In the embodiment of the present invention, please refer to fig. 1 to 3, the integral air conditioner includes an inner machine casing 10, a water pan 30 and an outer machine casing 40, an indoor side heat exchanger 20 is disposed in the inner machine casing 10, the water pan 30 is disposed in the inner machine casing 10 and located below the indoor side heat exchanger 20, and a water outlet 31 is disposed at the lowest position of the water pan 30. The outer machine shell 40 is connected with the inner machine shell 10, an outdoor heat exchanger 50 is arranged in the outer machine shell 40, and the condensed water discharged from the water discharge port 31 is used for cooling the outdoor heat exchanger 50.

Specifically, when the unitary air conditioner is in the cooling mode, the condensed water generated by the indoor side heat exchanger 20 can drop to the drain pan 30, and the condensed water in the drain pan 30 can be collected toward the lowest position and finally discharged from the drain opening 31 at the lowest position to cool the outdoor side heat exchanger 50.

The inner machine casing 10 and the outer machine casing 40 may be integrally provided or may be separately provided. The inner machine casing 10 is intended to be installed indoors, and the outer machine casing 40 may be installed indoors or outdoors. For example, when the inner unit casing 10 and the outer unit casing 40 are provided separately, the inner unit casing 10 may be provided indoors and the outer unit casing 40 may be provided outdoors. In addition, when the inner machine casing 10 and the outer machine casing 40 are integrally provided, the inner machine casing 10 may be provided indoors, and the outer machine casing 40 may be provided outdoors; or the whole machine is arranged indoors. The integral air conditioner is used in a movable board room or a container room, and can also be used in a commodity room.

The utility model discloses among the technical scheme, the comdenstion water through utilizing indoor side heat exchanger 20 to produce cools down to outdoor side heat exchanger 50 for the comdenstion water has obtained better utilization, can promote outdoor side heat exchanger 50's heat exchange efficiency, and the temperature of comdenstion water is lower moreover, and is better to outdoor side heat exchanger 50's radiating effect. The water outlet 31 is arranged at the lowest position of the water receiving tray 30 in a penetrating manner, so that the condensed water in the water receiving tray 30 can be completely discharged, the condensed water generated by the indoor side heat exchanger 20 can be fully utilized to cool the outdoor side heat exchanger 50, and the heat exchange efficiency of the outdoor side heat exchanger 50 is improved.

There are various ways of cooling the outdoor heat exchanger 50 after the condensed water is discharged from the drain opening 31, for example, in an embodiment, the condensed water discharged from the drain opening 31 is discharged to the upper side of the outdoor heat exchanger 50 and flows down along the outdoor heat exchanger 50. The condensed water in the water receiving tray 30 is drained to the upper side of the outdoor heat exchanger 50 through the drain opening 31, so that the condensed water is sprinkled to the upper end of the outdoor heat exchanger 50 and flows downwards along the outdoor heat exchanger 50. In the process that the condensed water flows down from above the outdoor heat exchanger 50, part of heat on the outdoor heat exchanger 50 can be taken away by the condensed water, so that the outdoor heat exchanger 50 can be cooled. The drain port 31 may be provided toward the outdoor heat exchanger 50 so that the condensed water discharged from the drain port 31 can be discharged to the outdoor heat exchanger 50. A guide member may be provided to guide the condensed water discharged from the drain port 31 to the outdoor side heat exchanger 50.

In addition, in an embodiment, the outer casing 40 includes an outer casing base 41, the outer casing base 41 is provided with a water pumping groove 411 and a water pumping wheel 42 extending into the water pumping groove 411, the condensed water discharged from the water discharge port 31 is discharged to the water pumping groove 411, and the water in the water pumping groove 411 is pumped to the outdoor heat exchanger 50 through the water pumping wheel 42. Alternatively, the water supply tank 411 may be provided below the outdoor heat exchanger 50, the condensed water discharged from the water discharge port 31 may be discharged above the outdoor heat exchanger 50, and the condensed water may fall into the water supply tank 411 after flowing through the outdoor heat exchanger 50, and the water may be supplied to the outdoor heat exchanger 50 through the water supply tank 411.

In one embodiment, the unitary air conditioner further includes a water collecting member (not shown) disposed above the outdoor heat exchanger 50, the water collecting member having a water collecting tank and a water outlet hole penetrating the water collecting tank, and the condensed water discharged from the water discharging hole 31 flows to the water collecting tank and is sprayed to the outdoor heat exchanger 50 through the water outlet hole. That is, the water collecting member is equivalent to a condensed water transfer structure between the water receiving tray 30 and the outdoor heat exchanger 50, and the condensed water flows into the water collecting tank and then flows to the outdoor heat exchanger 50 from the water outlet hole after being discharged from the water discharge port 31. Compared with the mode that the condensed water directly flows to the outdoor heat exchanger 50, the water collecting piece can slow down the water flow speed of the condensed water, so that the splashing condition of the condensed water when the condensed water is sprayed on the outdoor heat exchanger 50 is reduced or even avoided, and the condensed water is ensured to flow downwards along the outdoor heat exchanger 50. The condensed water can be fully contacted with the outdoor heat exchanger 50, thereby achieving better heat dissipation effect and being beneficial to improving the heat exchange efficiency of the outdoor heat exchanger 50. Wherein, the apopore can wear to locate the tank bottom of water catch bowl or the groove lateral wall of water catch bowl. In other embodiments, the condensed water discharged from the drain port 31 may be directly drained to the outdoor heat exchanger 50 without providing a water collector.

In order to increase the water spraying area, in an embodiment, the water collecting member is a long strip extending along the length direction of the outdoor heat exchanger 50, and the water collecting member is provided with a plurality of water outlet holes which are distributed at intervals along the length direction of the water collecting member. Specifically, the outdoor heat exchanger 50 extends in the lateral direction, that is, the refrigerant tubes of the outdoor heat exchanger 50 extend in the lateral direction. The air intake direction of the outdoor heat exchanger 50 is the thickness direction, and the height direction of the outdoor heat exchanger 50 is along the vertical direction. When the plurality of water outlet holes are distributed at intervals along the length direction of the water collecting member, that is, the plurality of water outlet holes are distributed at intervals along the length direction of the outdoor heat exchanger 50. So after condensate water flows to the water collecting tank, condensate water in the water collecting tank can be shunted to a plurality of positions of 50 length directions of the outdoor heat exchanger by a plurality of water outlet holes, so that heat dissipation can be carried out on a plurality of positions of the outdoor heat exchanger 50, and the heat dissipation area is increased. Of course, in other embodiments, the water collecting member may also be provided with a water outlet hole, and the water outlet hole may be a circular hole, or the water outlet hole may be a long hole extending along the length direction of the water collecting member.

Referring to fig. 2 and 3, in an embodiment, the bottom wall of the water tray 30 is gradually inclined downward toward the drain opening 31. So after the comdenstion water that indoor side heat exchanger 20 produced fell into water collector 30, the comdenstion water can flow towards outlet 31 along the diapire of water collector 30, is convenient for discharge the comdenstion water fast, can avoid the condition of ponding in the water collector 30, guarantees that the comdenstion water can both be used for the heat dissipation of outdoor side heat exchanger 50. Of course, in other embodiments, the bottom wall of the water tray 30 may be provided with a multi-step structure gradually decreasing toward the drain opening 31. Or a groove is arranged on the bottom wall of the water pan 30, and the water outlet 31 is arranged at the bottom of the groove.

In one embodiment, the drain opening 31 is disposed at one end of the water tray 30, and the bottom wall of the water tray 30 is gradually inclined downward from the other end of the water tray 30 toward the drain opening 31. By arranging the drain opening 31 at the end of the water pan 30, which is equivalent to arranging the drain opening 31 close to the side wall of the inner machine casing 10, the possibility of interference between the drain opening 31 and other components in the inner machine casing 10 can be reduced, and the structure in the inner machine casing 10 is more compact. Of course, in other embodiments, the drain opening 31 may be disposed at an intermediate position of the drip tray 30.

Referring to fig. 2 and 4, in an embodiment, the unitary air conditioner further includes a water guiding member 60, one end of the water guiding member 60 is disposed at the water outlet 31, and the other end extends toward the outdoor unit casing 40, so as to guide the condensed water discharged from the water outlet 31 to the outdoor heat exchanger 50 for cooling. Compared with the mode that the condensed water directly drops to the outdoor heat exchanger 50 or the water dripping tank 411 from the water outlet 31, the condensed water is guided by the water guide piece 60, so that the splashing of the condensed water can be avoided, and the noise generated in the dropping process of the condensed water can also be avoided. Of course, in other embodiments, the sump 411 may be disposed below the drain port 31 so that the condensed water discharged from the drain port 31 may fall into the sump 411. Alternatively, the drain port 31 may be provided above the outdoor heat exchanger 50 so that the condensed water discharged from the drain port 31 can fall to the outdoor heat exchanger 50.

In one embodiment, the water guiding member 60 is a water guiding pipe, one end of which is connected to the water outlet 31, and the other end of which extends toward the outer machine case 40. Specifically, the outdoor heat exchanger is provided in the outer casing 40, and the water conduit extends toward the outdoor heat exchanger 50 or the water tub 411. When the water guide 60 is provided as a water guide pipe, the condensed water can be guided to the upper side of the water pouring tank 411 or the outdoor heat exchanger 50, and the condensed water can be prevented from splashing or leaking. Of course, in other embodiments, the water guide 60 may also be a flow guide rod so that the condensed water discharged from the drain opening 31 can flow downward along the outer circumferential surface of the flow guide rod. The water guide 60 may have an elongated shape and a water guide groove extending in the longitudinal direction of the device so that the condensed water discharged from the water discharge port 31 can flow downward along the water guide groove.

Wherein, the aqueduct can be a hard pipe body or a hose. When the water guide pipe adopts a hard pipe body, the water guide pipe can be fixed conveniently, and the deflection of the water guide pipe is reduced. When the water guide pipe is a hose, the water guide pipe can be bent and deformed, so that the water guide pipe can be conveniently adapted to the arrangement of a gap in the outer machine shell 40, and the occupied space of the water guide pipe is favorably reduced.

Referring to fig. 2 and 3, in an embodiment, a drainage joint 32 communicating with the drainage port 31 is disposed below the water pan 30, and the water conduit is sleeved on the drainage joint 32. Particularly, aqueduct and drainage connect 32 interference fit, so when the installation aqueduct, locate the drainage connect 32 machine with the aqueduct cover can, simple to operate is favorable to promoting assembly efficiency. Of course, in other embodiments, a water conduit may be inserted into the drain opening 31.

Referring to fig. 2 and 4, in an embodiment, the outer casing 40 is provided with a fixing structure, and the fixing structure is connected to the water guide 60 to limit the movement of the water guide 60. Thus, the water guide member 60 is fixed by the fixing structure, so that the water guide member 60 can be prevented from deviating in the carrying or transporting process, and the condition that the condensed water cannot be normally discharged to the water pouring tank 411 or the outdoor side heat exchanger 50 in the using process is avoided. Of course, in other embodiments, no fixation structure may be provided.

The fixing structure may be various, for example, in an embodiment, the fixing structure includes at least one fixing buckle 70, the fixing buckle 70 includes a limiting portion 72 and a connecting portion 71 connected to an outer side of the limiting portion 72, the connecting portion 71 is connected to the outer casing 40, and the limiting portion 72 is sleeved on the water guide 60. That is, the limiting portion 72 is sleeved on the periphery of the water guiding member 60, so as to ensure that the fixing effect of the fixing buckle 70 on the water guiding member 60 is better and the stability of the water guiding member 60 is ensured. The stopper 72 may be a closed ring structure, an open ring structure having a notch, or the like. The fixing button 70 and the outer casing 40 may be integrally formed or detachably connected. When the fixing button 70 is detachably connected to the outer casing 40, the fixing button 70 is fastened to the outer casing 40, or may be connected to the outer casing by a screw. Of course, in other embodiments, the water guiding member 60 may be fixed to the outer casing 40 or other components inside the outer casing 40 by a soft band or a tie. The water guide 60 is fixed to the outer machine casing 40 by a screw. Or the water guide 60 may be fitted through a snap ring, and both ends of the snap ring may be fixed to the outer casing 40 by screws.

To facilitate the installation of the water guiding element 60, in an embodiment, the limiting portion 72 has an installation notch, and the water guiding element 60 is inserted into the limiting portion 72 from the installation notch and is in interference fit with the limiting portion 72. Specifically, when the water guide 60 is fitted into the stopper portion 72 from the fitting notch, the stopper portion 72 or the water guide 60 can be elastically deformed so that the water guide 60 is fitted into the stopper portion 72. The size of the installation notch is smaller than the size of the water guide 60 (when the water guide 60 is a water guide pipe, the size of the installation notch is smaller than the outer diameter of the water guide pipe) so that after the water guide 60 is clamped into the limiting portion 72, the water guide 60 can be limited from coming off from the installation notch. So set up, when installation water guide 60, only need go into water guide 60 card and can realize fixing in spacing portion 72, need not pass through the fix with screw, reduced the installation procedure, be favorable to promoting assembly efficiency. Of course, in other embodiments, the water guide 60 may be first inserted into the limiting portion 72 and then connected to the outer casing 40 through the connecting portion 71.

In one embodiment, the water fetching groove 411 includes a water receiving section and a water fetching section connected with each other, the water receiving section is located below the water discharging opening 31, the water guiding member 60 vertically extends to the water fetching groove 411 along a downward direction, and the water fetching wheel 42 extends into the water fetching section. The water guide member 60 is arranged to be of a structure extending up and down, so that the water guide member 60 can be conveniently installed, the occupied space of the water guide member 60 in the transverse direction can be reduced, the structure of the integral air conditioner is more compact, and the size of the whole air conditioner is favorably reduced. Wherein, connect the water section and beat the water section and can be the arc setting, also can be the setting of vertical stripe, can also be the setting of buckling with connecing the water section and beat the water section.

In one embodiment, the unitary air conditioner further includes a drain pump (not shown) having a water inlet connected to the drain opening 31 for drawing the condensed water in the water tray 30 out of the drain opening 31. So take out the comdenstion water in with the water collector 30 through setting up the drain pump, can make the comdenstion water in the water collector 30 take out fast, promote the water velocity of comdenstion water to can arrange the comdenstion water fast to the top of outdoor heat exchanger or make water tank 411.

Referring to fig. 1 and 2, in an embodiment, the outer casing 40 includes an indoor section 43 and an outdoor section 44, the inner casing 10 is disposed on an upper side of the indoor section 43, a compressor is disposed in the indoor section 43, and the compressor is connected to the indoor heat exchanger 20 and the outdoor heat exchanger 50 through a refrigerant pipeline. Specifically, the outdoor heat exchanger 50 is disposed in the outdoor section 44, the air inlet and the air outlet of the outer casing 40 are both disposed in the outdoor section 44, and the indoor section 43 extends into the lower portion of the outer casing 40 and is located below the water collector 30, that is, the compressor is disposed below the water collector 30. Thus, when the unitary air conditioner is used, the indoor section 43 can be placed indoors together with the inner machine casing 10, and the outdoor section 44 of the outer machine casing 40 can be placed outdoors. This can reduce the weight of the outdoor unit 44, and thus can reduce the pressure of the outdoor unit 44 on the support frame when the outdoor unit 44 is installed on a floor higher than the second floor of the house. For example, when the integrated air conditioner is used in a two-story or more prefabricated house (container house), the pressure of the outdoor section 44 on the support frame can be reduced by installing the outdoor section 44 outdoors, and even the outdoor section 44 can be supported without providing a support frame, which can be used in a prefabricated house or a container house. Of course, in other embodiments, the outer casing 40 may be integrally connected to the rear side of the inner casing 10, that is, the compressor may be disposed at the rear side of the inner casing 10.

Referring to fig. 2 and 5, in order to facilitate the water fetching of the water fetching wheel 42, in an embodiment, the bottom of the water fetching groove 411 has a water fetching area 412, the water fetching area 412 is located at the lowest position of the water fetching groove 411, and the water fetching wheel 42 is located above the water fetching area 412. The water beating wheel 42 is disposed at the lowest position of the water beating tank 411 corresponding to the water beating area 412, and after the condensed water is drained from the water outlet 31 to the water beating tank 411, the condensed water can be collected in the water beating area 412. Therefore, the water quantity in the water fetching area 412 can reach the water fetching position as soon as possible, the water fetching wheel 42 fetches water in a short time, and the time from the start of the integral air conditioner to the start of the water fetching wheel 42 is shortened. Therefore, the condensed water generated by the indoor heat exchanger 20 can be used for cooling the outdoor heat exchanger 50 quickly, and the heat exchange efficiency of the outdoor heat exchanger 50 is improved.

In order to make the condensed water quickly gather toward the water hitting area 412, in an embodiment, the bottom of the water hitting slot 411 is inclined downward in a direction toward the water hitting area 412. So when condensate water flows to the basin 411 back of fetching water, the comdenstion water can be along the tank bottom rapid flow direction of fetching water tank 411 to the district 412 of fetching water, can make the comdenstion water all flow to the district 412 of fetching water, has reduced the time of comdenstion water towards the district 412 gathering of fetching water, can realize fetching water the wheel 42 and beat water fast. Of course, in other embodiments, the bottom of the watering trough 411 may be provided with a multi-step structure gradually decreasing toward the watering zone 412. In addition, the bottom of the water tank 411 may be horizontally disposed, and the water pumping area 412 is recessed at the bottom of the water tank 411.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An integral air conditioner, comprising:

2. The unitary air conditioner according to claim 1, wherein the bottom wall of said water collector is gradually inclined downward in a direction toward said drain opening.

3. The unitary air conditioner according to claim 1, wherein said drain opening is provided at one end of said water receiving pan and is inclined downwardly in a direction from the other end of said water receiving pan toward said drain opening.

4. The unitary air conditioner according to claim 1, further comprising a water guide member having one end disposed at the drain outlet and the other end extending toward the outdoor unit casing to guide the condensed water discharged from the drain outlet to the outdoor heat exchanger for cooling.

5. The unitary air conditioner according to claim 4, wherein said water guide member is a water guide pipe, one end of said water guide pipe is communicated with said water discharge port, and the other end thereof extends toward said outer cabinet.

6. The unitary air conditioner according to claim 5, wherein said water introduction duct is a rigid tube or a hose.

7. The unitary air conditioner according to claim 5, wherein a drain joint communicating with said drain outlet is provided under said water receiving pan, and said water guiding pipe is sleeved on said drain joint.

8. The unitary air conditioner according to any one of claims 4 to 7, wherein the outer cabinet is provided with a fixing structure which is coupled to the water guide to restrict the movement of the water guide.

9. The unitary air conditioner according to claim 8, wherein the fixing structure comprises at least one fixing buckle, the fixing buckle comprises a limiting portion and a connecting portion connected to an outer side of the limiting portion, the connecting portion is connected to the outer cabinet, and the limiting portion is sleeved on the water guide.

10. The unitary air conditioner according to claim 9, wherein said stopper portion has an installation notch, and said water guide is fitted into said stopper portion from said installation notch and is in interference fit with said stopper portion.

11. The unitary air conditioner according to any one of claims 1 to 7, further comprising a drain pump having a water inlet communicating with the drain outlet for drawing condensed water in the water collector out of the drain outlet.

12. The unitary air conditioner according to any one of claims 1 to 7, wherein the outer casing comprises an indoor section and an outdoor section, the inner casing is disposed at an upper side of the indoor section, and a compressor is disposed in the indoor section and connected to the indoor heat exchanger and the outdoor heat exchanger through refrigerant pipes.