CN215951567U - Interior machine of concealed air conditioning and air conditioner - Google Patents

Abstract

The utility model discloses a built-in air conditioner indoor unit and an air conditioner, wherein the indoor unit comprises an outer cabinet and a storage cabinet, the outer cabinet is of a v-21274structure and comprises a top cavity, a rear side cavity and a bottom cavity which are communicated with each other, and the storage cabinet is placed in a concave cavity of the outer cabinet; the machine body part of the indoor machine is arranged in a top cavity of the outer cabinet, the front side plate of the top cavity is provided with an air supply outlet shutter, the communication area of the top cavity and the rear cavity is used as an air return inlet, the rear cavity and the bottom cavity form an air return channel, and the front side plate of the bottom cavity is provided with an air return inlet grid. The condenser of the outdoor unit comprises an air-cooled condenser and a water-cooled condenser which are connected in series, and the water-cooled condenser is added, so that the problem of discharging condensed water in summer can be solved, and the refrigeration efficiency of the air conditioner in summer is improved; in winter, the heat exchange area of the condenser is increased, and the heating effect of the air conditioner is improved.

Description

Interior machine of concealed air conditioning and air conditioner

Technical Field

The utility model relates to a built-in air conditioner indoor unit and an air conditioner, and belongs to the air conditioner design technology.

Technical terms

Indoor set: the indoor part of the air conditioner mainly comprises an evaporator, an expansion valve, a fan, a condensed water disc and the like.

An outdoor unit: the outdoor part of the air conditioner mainly comprises an air-cooled condenser, a compressor, a four-way reversing valve and the like.

An evaporator: the refrigerant in the evaporator is low-temperature low-pressure liquid, when air flows through the evaporator, heat is transferred to the refrigerant in the evaporator, and the refrigerant is evaporated and converted into low-temperature low-pressure gas.

A compressor: the compressor may compress refrigerant from a low-temperature and low-pressure gas to a high-temperature and high-pressure gas.

An air-cooled condenser: the high-temperature and high-pressure refrigerant gas in the condenser transfers heat to air flowing into the condenser, and the air is converted into high-temperature and high-pressure liquid.

Water-cooled condenser: the high-temperature high-pressure refrigerant gas in the condenser transfers heat to water flowing into the condenser, and the water is converted into high-temperature high-pressure liquid.

An expansion valve: the expansion valve converts the high-temperature and high-pressure refrigerant liquid into a low-temperature and low-pressure gas-liquid mixture.

Condensation water: when the air conditioner is used for refrigerating in summer, the indoor air and the refrigerant with lower temperature in the evaporator exchange heat, and simultaneously, water vapor in the air is condensed into water, namely, condensed water is generated.

A condensed water pan: the condensed water collecting device is used for collecting condensed water produced on the evaporator, and the condensed water enters the condensed water tray under the action of gravity.

An air return opening: the indoor air conditioner enters the indoor unit through the return air inlet, which is called the return air inlet.

An air supply outlet: the air treated by the indoor unit of the air conditioner is delivered into the room through the air supply outlet, and the outlet is the air supply outlet.

Pressure-enthalpy diagram: for analyzing the change process of the refrigerant state, the abscissa is a specific enthalpy value (representing the magnitude of the enthalpy value of the refrigerant, the larger the abscissa is, the larger the enthalpy value of the refrigerant is), and the ordinate is a logarithmic value of absolute pressure (representing the high and low of the refrigerant pressure, the larger the ordinate is, the higher the refrigerant pressure is).

Background

Along with the improvement of living standard, people require that the indoor unit of the air conditioner meets the comfort level, the appearance of the indoor unit of the air conditioner is attractive, the indoor unit of the air conditioner needs to be coordinated with decoration and can be preferably hidden, and the indoor unit of the air conditioner provides cold and heat for a room by exchanging heat with indoor air, so that a certain heat exchange space is inevitably occupied, no shielding can be provided at an air inlet and an air outlet of the indoor unit of the air conditioner, otherwise, the refrigerating and heating effects of the air conditioner are poor, cold and hot air cannot be provided for the room well, the air flow organization of the room is poor, and the comfort level of a human body is not high. This is contrary to the requirement of keeping the indoor unit inside.

When outdoor temperature is higher in summer, in order to reach the refrigeration effect of a room, a large temperature difference and dew point air supply mode are generally adopted, condensate water can appear on an evaporator, the condensate water is directly discharged in the conventional treatment mode, so the problem of discharge of the condensate water needs to be considered, if the condensate water is improperly treated, an air conditioner indoor unit leaks water, even if the condensate water is discharged to a floor drain at an outdoor unit, if a drainage vertical pipe is not arranged at the outdoor unit, the condensate water can be caused to drip from a building outer vertical surface, and certain trouble is caused to pedestrians under the building.

The existing ceiling embedded air conditioner has the characteristics of no indoor area occupation, attractive appearance, uniform speed field and temperature field and the like, and is widely applied to high-grade occasions such as hotels, restaurants and the like. However, the ceiling-embedded air conditioner has a short circuit phenomenon, because the air supply outlet and the air return inlet are positioned relatively close to each other, a part of newly processed air is just sent out from the air supply outlet and quickly returns to the air return inlet, the energy utilization efficiency of the air supply of the air conditioner is low, and the short circuit phenomenon is more serious especially in winter heating seasons, so that the processed air cannot be effectively sent to farther positions of rooms, which is not beneficial to energy conservation and is difficult to ensure the comfort level of the rooms.

An existing built-in floor type air conditioner, such as a large-gold FJNP-MNVC and FXNP-MNVC series air conditioner indoor unit, is hidden under a windowsill, an air return inlet is arranged at the bottom of the windowsill, and an air supply outlet is arranged at the top of the windowsill; this kind of indoor unit fuselage is compact, and the installation does not need the furred ceiling, does not need to change indoor furred ceiling decoration. The hidden floor type air conditioner has the advantages that dust is easily accumulated on the top of the windowsill, more dust is inevitably accumulated at the air supply opening at the top, and when the unit is opened, dust at the air supply opening can enter a room under the driving of air supply airflow, so that the quality of indoor air is poor. Many residents like plants, such as flowerpots for raising plants, like placing things on windowsills, if the residents do not know the purpose of the air supply opening on the windowsills, even the residents may mistakenly think that the windowsills are a decoration feature, the air supply opening is likely to be blocked, cold air and hot air cannot enter a room, the indoor unit cannot achieve the refrigerating and heating effects, and the indoor unit can be damaged after a long time. In order to prevent the view of residents from being blocked, the height of the windowsill is generally between 0.9 and 1.2 meters, so that the height of the air supply opening is about 1 meter, cold air is blown out of the air supply opening in summer, and the cold air sinks due to gravity, so that the cold air is mainly concentrated at the lower part of a room, the air speed of the air supply opening needs to be increased in order to enable the cold air to reach the upper area of the room, people stand near the windowsill to have strong blowing feeling, and articles near the air supply opening on the windowsill are easy to drop. The indoor unit can not be opened to operate for a long time, otherwise, the dewing phenomenon can occur. The installation of indoor set needs to go on with the windowsill fitment together, perhaps reserves indoor set installation space during the windowsill construction, and is higher to the construction requirement of early stage, and is difficult to dismantle the maintenance, brings a great deal of inconvenience to the maintenance of later stage, relatively is applicable to the room that has the exterior window.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides the built-in air-conditioning indoor unit combining air cooling and water cooling and the air conditioner, which have the advantages of beautiful appearance, strong applicability, high refrigerating and heating efficiency, uniform air flow organization and convenient disassembly and maintenance.

The technical scheme is as follows: in order to achieve the purpose, the utility model adopts the technical scheme that:

a built-in air-conditioning indoor unit comprises an outer cabinet and a storage cabinet, wherein the outer cabinet is of a v-21274; the machine body part of the indoor machine is arranged in a top cavity of the outer cabinet, the front side plate of the top cavity is provided with an air supply outlet shutter, the communication area of the top cavity and the rear cavity is used as an air return inlet, the rear cavity and the bottom cavity form an air return channel, and the front side plate of the bottom cavity is provided with an air return inlet grid. According to the scheme, the indoor unit is integrated with the storage cabinet, so that the indoor unit is suitable for various home decoration requirements, the space utilization rate can be effectively improved, and decoration is beautified; the arrangement of the air return channel realizes the modes of downward air return and upward air supply, and the downward air return and upward air supply can ensure that the air flow organization of a room is uniform.

The air return opening can also be considered to be arranged at the bottom of the cabinet, if so, the requirement on the height between the bottom of the cabinet and the ground is increased; it is also conceivable that the air supply outlet is mounted on the cabinet top, which is likely to cause dust accumulation and cause indoor air quality problems.

Specifically, the machine body components of the indoor unit comprise a fan, an evaporator and a condensed water tray.

Specifically, the bottom of outer cabinet is installed the universal wheel of taking brake structure.

Specifically, an iron sheet lining is pasted on the inner wall of the air return channel.

Specifically, a filter screen is arranged on the inner side of the return air inlet grid; the air supply outlet shutter, the filter screen and the return air inlet grid are all detachable and washable structures.

The storage cabinet comprises a top plate, a bottom plate, a back plate, two side plates and a cabinet door, wherein the top plate and the bottom plate are of fixed structures, the back plate and the two side plates are of detachable structures, and the top plate, the bottom plate, the back plate, the two side plates and the cabinet door are contained to form an inner cavity of the storage cabinet; after the locker is placed in the concave cavity of the outer cabinet, the side plates simultaneously form the side plates of the outer cabinet, and the cabinet doors simultaneously form the cabinet doors of the outer cabinet.

An air conditioner comprises any one of the built-in air conditioner indoor unit, an outdoor unit, a refrigerant pipeline and a condensed water pipeline; the machine body part of the indoor machine comprises an evaporator, a condensed water disc and an expansion valve, the machine body part of the outdoor machine comprises a four-way reversing valve, a compressor and a water-cooled condenser, the evaporator is connected with the compressor through a refrigerant pipeline and the four-way reversing valve, and the condensed water disc is connected with the water-cooled condenser through a condensed water pipeline; the refrigerant pipeline and the condensed water pipeline are both designed with telescopic sections; the air-cooled condenser is connected in series with the water-cooled condenser.

The water-cooled condenser is provided with a condensed water inlet and a condensed water outlet, and a condensed water pipeline is communicated with the condensed water inlet; the condensed water flows into the water-cooled condenser from the condensed water inlet under the action of gravity, the condensed water is heated and vaporized in the water-cooled condenser, and the non-vaporized condensed water flows out from the condensed water outlet (connected with a floor drain). The water-cooled condenser and the air-cooled condenser are connected in series on a refrigerant pipeline; in summer, the refrigerant firstly enters the coil pipe in the air-cooled condenser and then enters the coil pipe in the water-cooled condenser, wherein condensed water flows outside the coil pipe, and the refrigerant flows inside the coil pipe; in winter, the flow direction of the refrigerant is opposite to that in summer.

The air-cooled condenser and the water-cooled condenser can be integrated into a whole, namely, condensed water is directly sprayed on fins of the air-cooled condenser, but because the distance between the fins is small (generally between 1.5 and 2 mm), because water has certain viscosity, if the water is not properly treated, a large amount of dust is accumulated on the condenser, the heat exchange resistance of the condenser is increased, and the heat exchange efficiency of the original air-cooled condenser is reduced, so that the condenser with the series structure is more recommended to use.

Has the advantages that: compared with the prior art, the built-in air conditioner indoor unit and the air conditioner provided by the utility model have the following advantages: 1. the indoor unit is hidden in the cabinet body, so that the indoor unit is hidden, attractive in appearance and suitable for various rooms; the cabinet body can store articles, and the space utilization rate is improved; 2. the air flow mode of downward air return and upward air supply is adopted, so that the air flow is uniform; 3. the tuyere assembly adopts a detachable and washable structure, so that the maintenance is convenient; 4. the side plate of the cabinet body adopts a detachable structure, so that the maintenance is convenient; 5. the water-cooled condenser is added, so that the problem of discharging condensed water in summer is solved, and the refrigeration efficiency of the air conditioner in summer is improved; 6. the addition of the water-cooled condenser is equivalent to increase the heat exchange area of the condenser in winter, and the heating effect of the air conditioner is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a cross-sectional view taken along plane A-A of FIG. 2;

fig. 4 is a cross-sectional view taken along plane B-B of fig. 2 and a connection diagram of the outdoor unit;

FIG. 5 is a pressure-enthalpy diagram of the air conditioner refrigerant cycle in summer;

FIG. 6 is a pressure-enthalpy diagram of the air conditioner refrigerant cycle in winter;

the figure includes: 1-an indoor unit; 2, an outdoor unit; 3-a storage cabinet; 4-return air channel; 5-a refrigerant conduit; 6-condensed water pipeline; 7-a scalability section; 11-a fan; 12-an evaporator; 13-a condensate pan; 14-air supply outlet shutter; 15-an expansion valve; a 21-four-way reversing valve; 22-a compressor; 23-air-cooled condenser; 24-a water-cooled condenser; 31-cabinet chamber; 32-cabinet door; 33-side plate; 34-universal wheels with brake structures; 35-a back plate; 41-air return inlet; 42-iron sheet lining; 43-a filter screen; 44-return air inlet grid; 241-a condensate inlet; 242-condensed water outlet.

Detailed Description

The utility model is described in detail below with reference to the figures and the embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-3, the built-in indoor unit of air conditioner comprises an outer cabinet and a storage cabinet 3, wherein the outer cabinet is a v-21274and has a shape structure comprising a top cavity, a rear side cavity and a bottom cavity which are communicated with each other, and the storage cabinet 3 is placed in a concave cavity of the outer cabinet; the machine body part of the indoor machine 1 is arranged in the top cavity of the outer cabinet, the front side plate of the top cavity is provided with an air supply outlet louver 14, the communicated area of the top cavity and the rear cavity is used as a return air inlet 41, the rear cavity and the bottom cavity form a return air channel 4, and the front side plate of the bottom cavity is provided with a return air inlet grid 44; an iron sheet lining 42 is adhered to the inner wall of the air return channel 4; a filter screen 43 is arranged on the inner side of the return air inlet grid 44; the air supply outlet louver 14, the filter screen 43 and the return air inlet grid 44 are all of detachable and washable structures.

The storage cabinet 3 comprises a top plate, a bottom plate, a back plate 35, two side plates 33 and a cabinet door 32, wherein the top plate and the bottom plate are of fixed structures, the back plate 35 and the two side plates 33 are of detachable structures, and the top plate, the bottom plate, the back plate 35, the two side plates 33 and the cabinet door 32 are contained to form a storage cabinet inner cavity 31; after the storage cabinet 3 is placed in the cavity of the outer cabinet, the side plates 33 simultaneously form the side plates of the outer cabinet, and the cabinet doors 32 simultaneously form the cabinet doors of the outer cabinet; the bottom of the outer cabinet is provided with a universal wheel 34 with a brake structure.

As shown in fig. 4, the air conditioner based on the built-in air conditioner indoor unit of the present invention comprises an indoor unit 1, an outdoor unit 2, a refrigerant pipeline 5 and a condensed water pipeline 6; the body parts of the indoor unit 1 comprise an evaporator 12, a condensed water disc 13 and an expansion valve 15, the body parts of the outdoor unit 2 comprise a four-way reversing valve 21, a compressor 22, a water-cooled condenser 24 and an air-cooled condenser 23, the evaporator 12 is connected with the compressor 22 through a refrigerant pipeline 5 and the four-way reversing valve 21, and the condensed water disc 13 is connected with the water-cooled condenser 24 through a condensed water pipeline 6; the refrigerant pipeline 5 and the condensed water pipeline 6 are both designed with telescopic sections 7; the air-cooled condenser 23 and the water-cooled condenser 24 are connected in series. (Note: there are other components such as a dry filter, a gas-liquid separator, etc. to ensure safe operation of the air conditioner, and only the main components are written here for easy understanding.)

The air conditioner refrigerates in summer and heats in winter, its working process is as follows:

1. summer air-conditioning refrigeration

When the air conditioner runs in summer, the air system, the refrigerant system and the condensed water system act together.

(1) In the air system, indoor air enters from a return air inlet grid 44, is filtered by a filter screen 43 and then enters the indoor unit 1 from a return air channel 4 to exchange heat with a refrigerant in the evaporator 12, low-temperature air is sent into a room through the air supply outlet shutter 14 under the action of the fan 11 after heat is exchanged for the refrigerant, then is mixed with the indoor air and exchanges heat, and the mixed air enters the return air channel 4 again to perform the next circulation until the indoor temperature reaches a set value.

(2) In the refrigerant system, when air-conditioning refrigeration is carried out in summer, the flow direction of the refrigerant in the system is shown by solid arrows in figure 4, and the pressure-enthalpy diagram of the refrigerant circulation process is shown by a-b-c-d-a in figure 5. d-a shows the change of the refrigerant in the evaporator 12, a-b shows the change of the refrigerant in the compressor 22, b-c shows the change of the refrigerant in the air-cooled condenser 23, and c-d shows the change of the refrigerant in the expansion valve 15. The low-temperature low-pressure refrigerant liquid (state at point d) absorbs the heat transferred from the return air in the evaporator 12, evaporates into low-temperature low-pressure refrigerant gas (state at point a), the low-temperature low-pressure refrigerant gas (state at point a) is compressed into high-temperature high-pressure gas (state at point b) by the compressor 22, the high-temperature high-pressure gas (state at point b) from the compressor 22 flows through the air-cooled condenser 23, transfers the heat to the outdoor air flowing through the air-cooled condenser 23, and after releasing the heat, the refrigerant gas (b point state) is condensed into a high-temperature and high-pressure refrigerant liquid (c point state), the high-temperature and high-pressure refrigerant liquid (c point state) from the air-cooled condenser 23 is throttled by the expansion valve 15 and is converted into a low-temperature and low-pressure refrigerant liquid (d point state), and the low-temperature and low-pressure refrigerant liquid enters the evaporator 12 again to start the next cycle. The cooling capacity per unit mass of refrigerant is the difference between the abscissa of the point a and the abscissa of the point d, i.e., the L value in the graph.

In order to fully utilize the condensed water and improve the refrigeration efficiency, a water-cooled condenser 24 is added at the outlet of the air-cooled condenser 23, the circulation process of the refrigerant is shown as a-b-c-1-d 1-d-a in a pressure-enthalpy diagram in fig. 5, and the processes of c-c1 and d1-d are more than those of the original air-cooled condenser 23 only. That is, the high-temperature and high-pressure refrigerant liquid (c point state) from the air-cooled condenser 23 enters the water-cooled condenser 24 again, exchanges heat with the condensed water in the water-cooled condenser 24 to become supercooled high-temperature and high-pressure refrigerant liquid (c 1 point state), passes through the expansion valve 15, is throttled, is changed into low-temperature and low-pressure refrigerant liquid (d 1 point state), enters the evaporator 12 again, starts the next refrigeration cycle, and can absorb more room heat because the temperature at the d1 point is lower than the d point. With the addition of the water-cooled condenser 24, the cooling capacity per unit mass of refrigerant equal to the difference between the abscissas at points a and d1, i.e., the L + L1 value in the figure, is increased by the L1 value as compared with the case of the air-cooled condenser 23 alone. Taking a living room of 30 square in Nanjing as an example, the indoor design temperature is 25 ℃, the relative humidity is 50%, the summer cooling load is about 6.9kW, and an air conditioner with the model of FVXF172NC (data from Dajin manufacturer) is selected, the rated cooling capacity is 7.2kW, and the air supply capacity is 1000m 3/h. Because an indoor unit with nominal refrigerating capacity of 1 match generates 2 liters of condensed water per hour (data come from the great-gold air conditioning system design manual), the indoor unit can generate 6 liters of condensed water per hour, namely 6kg/h, because the temperature of the condensed water is lower than the dew point temperature (13.7 ℃) of an indoor air state, the latent heat of vaporization of the condensed water at the temperature can be checked to be 2468kJ/kg, and if the heat which can be taken away by the complete vaporization of the condensed water is 4.11kW, the heat which can be taken away by more than half of a room can be taken away, which indicates that the refrigerating effect of the air conditioner can be obviously improved after the water-cooled condenser 24 is added.

(3) In the condensate water system, in summer, the indoor air exchanges heat with the refrigerant with a low temperature in the evaporator 12, and simultaneously, water vapor in the air is condensed into water, so that condensate water is generated. The condensed water enters the condensed water tray 13 from the condensed water inlet 241 under the action of gravity, and then enters the water-cooled condenser 24 through the condensed water pipeline 6 (the condensed water pipeline has a certain gradient and slopes towards the outdoor unit, so the condensed water can flow into the water-cooled condenser 24 under the action of gravity), the condensed water absorbs the heat of the refrigerant in the water-cooled condenser 24, the heat is vaporized into water vapor, only a very small part of the condensed water is left without evaporation, and the condensed water is directly discharged into the floor drain from the condensed water outlet 242. The method can not only improve the refrigeration effect of the air conditioner in summer, but also solve the problem of discharging condensed water.

Winter air conditioner heating

When the air conditioner heats, because indoor set 1 can not produce the comdenstion water, so do not have condensate water system, only two system combined action are: air systems, refrigerant systems.

(1) In the air system, indoor air enters from a return air inlet grid 44, is filtered by a filter screen 43, enters the indoor unit 1 from a return air channel 4, exchanges heat with a refrigerant in an evaporator 12 (the evaporator is equivalent to a condenser in summer at the moment), after the heat of the refrigerant is absorbed, high-temperature air is sent into a room through an air supply opening 14 under the action of a fan 11, is mixed with the indoor air and exchanges heat, and the mixed air enters the return air channel 4 again for the next circulation until the indoor temperature reaches a set value.

(2) In the refrigerant system, when the air conditioner heats in winter, the flow direction of the refrigerant in the system is shown as hollow arrows in fig. 4, and the pressure-enthalpy diagram of the refrigerant circulation process is shown as a-b-c-d-a in fig. 6. d-a shows the change of the refrigerant in the outdoor air-cooled condenser 23, a-b shows the change of the refrigerant in the compressor 22, b-c shows the change of the refrigerant in the indoor evaporator 12, and c-d shows the change of the refrigerant in the expansion valve 15. The low-temperature low-pressure refrigerant liquid (point d state) absorbs the heat transferred from the return air in the air-cooled condenser 23, evaporates into low-temperature low-pressure refrigerant gas (point a state), the low-temperature low-pressure refrigerant gas (point a state) is compressed into high-temperature high-pressure gas (point b state) by the compressor 22, the high-temperature high-pressure gas (point b state) coming out of the compressor 22 enters the indoor evaporator 12, transfers the heat to the return air, after releasing the heat, the refrigerant gas (point b state) is condensed into high-temperature high-pressure refrigerant liquid (point c state), the high-temperature high-pressure refrigerant liquid (point c state) coming out of the evaporator 12 is throttled by the expansion valve 15 and is converted into low-temperature low-pressure refrigerant liquid (point d state), and the low-temperature low-pressure refrigerant liquid enters the air-cooled condenser 23 again to start the next cycle. The heating capacity per unit mass of refrigerant is the difference between the abscissa of the point b and the abscissa of the point d, i.e., the value of L2 in the figure.

The water-cooled condenser 24 is added, the added water-cooled condenser 24 is changed into the air-cooled condenser in winter, the heat exchange area of the original air-cooled condenser 23 is increased, the pressure-enthalpy diagram of the circulation process of the refrigerant is as shown in a-a1-b1-b-c-d-a in fig. 6, and the processes of a-a1 and b1-b are more than that of the original air-cooled condenser 23 only. More heat can be extracted from the outdoor air due to the addition of the water-cooled heat exchanger 24. With the addition of the water-cooled condenser 24, the heating capacity per unit mass of refrigerant, which is equal to the difference between the abscissas at the point a1 and the point d, i.e., the value of L2+ L3 in the figure, is increased by the value of L3 compared to the heating capacity of the air-cooled condenser alone.

In daily maintenance, the filter screen 43 can be detached and taken out, cleaned and then installed, and the filter screen 43 is convenient to detach due to the fact that the installation height of the filter screen 43 is low (about 300mm from the ground).

When the equipment is in failure, the brake of the universal wheel 34 with the brake structure can be opened, the outer cabinet can be moved, the storage cabinet 3 can be taken out, or the back plate 35 or the side plate 33 of the storage cabinet 3 can be moved to an angle convenient for opening, and the outer cabinet can be moved for a certain distance without damaging the equipment because the refrigerant pipeline 5 and the condensed water pipeline 6 are both provided with the telescopic sections 7. The side plate 33 or the back plate 35 is opened to perform maintenance on the indoor unit 1.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims (8)

1. An interior machine in built-in air conditioning which characterized in that: the multifunctional cabinet comprises an outer cabinet and a storage cabinet (3), wherein the outer cabinet is of a v-21274, the outer cabinet is of a shape structure and comprises a top cavity, a rear side cavity and a bottom cavity which are communicated with each other, and the storage cabinet (3) is placed in a concave cavity of the outer cabinet; the machine body part of the indoor machine (1) is arranged in the top cavity of the outer cabinet, the front side plate of the top cavity is provided with an air supply outlet shutter (14), the communicated area of the top cavity and the rear cavity is used as an air return opening (41), the rear cavity and the bottom cavity form an air return channel (4), and the front side plate of the bottom cavity is provided with an air return inlet grid (44).

2. The built-in air conditioning indoor unit of claim 1, wherein: the machine body components of the indoor machine (1) comprise a fan (11), an evaporator (12) and a condensed water disc (13).

3. The built-in air conditioning indoor unit of claim 1, wherein: the bottom of the outer cabinet is provided with a universal wheel (34) with a brake structure.

4. The built-in air conditioning indoor unit of claim 1, wherein: an iron sheet lining (42) is adhered to the inner wall of the air return channel (4).

5. The built-in air conditioning indoor unit of claim 1, wherein: a filter screen (43) is arranged on the inner side of the return air inlet grid (44); the air supply outlet shutter (14), the filter screen (43) and the return air inlet grid (44) are all of detachable and washable structures.

6. The built-in air conditioning indoor unit of claim 1, wherein: the storage cabinet (3) comprises a top plate, a bottom plate, a back plate (35), two side plates (33) and a cabinet door (32), wherein the top plate and the bottom plate are of fixed structures, the back plate (35) and the two side plates (33) are of detachable structures, and the top plate, the bottom plate, the back plate (35), the two side plates (33) and the cabinet door (32) are contained to form a storage cabinet inner cavity (31); after the storage cabinet (3) is placed in the concave cavity of the outer cabinet, the side plates (33) form the side plates of the outer cabinet at the same time, and the cabinet door (32) forms the cabinet door of the outer cabinet at the same time.

7. An air conditioner comprising any of the built-in air conditioning indoor units of claims 1 to 6, an outdoor unit (2), a refrigerant pipe (5) and a condensed water pipe (6); the indoor unit (1) comprises a body part comprising an evaporator (12), a condensed water disc (13) and an expansion valve (15), the outdoor unit (2) comprises a four-way reversing valve (21), a compressor (22) and a water-cooled condenser (24), the evaporator (12) is connected with the compressor (22) through a refrigerant pipeline (5) and the four-way reversing valve (21), and the condensed water disc (13) is connected with the water-cooled condenser (24) through a condensed water pipeline (6); the method is characterized in that: the refrigerant pipeline (5) and the condensed water pipeline (6) are both designed with telescopic sections (7); the air-cooled condenser (23) is also included, and the water-cooled condenser (24) and the air-cooled condenser (23) are connected in series.

8. The air conditioner according to claim 7, wherein: the water-cooled condenser (24) is provided with a condensed water inlet (241) and a condensed water outlet (242), and the condensed water pipeline (6) is communicated with the condensed water inlet (241); the water-cooled condenser (24) and the air-cooled condenser (23) are connected in series on the refrigerant pipeline (5).

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