CN219531004U - Dual-system air conditioner - Google Patents

Abstract

The utility model relates to a dual-system air conditioner, which comprises an indoor unit and an outdoor unit; the indoor unit includes: a first housing having a first chamber and a second chamber disposed therein; a first evaporator, a second evaporator, a first evaporating fan and a second evaporating fan are arranged in the first chamber; the first compressor, the second compressor and the electrical box are arranged in the second chamber, the front side of the second chamber is provided with a front panel, and the rear side of the second chamber is provided with a rear cover plate; the first compressor and the second compressor are arranged on the back side of the electric box side by side, a gap area is arranged on the electric box, and the first compressor or the second compressor is exposed out of the front side of the second chamber through the gap area. The first compressor, the second compressor and the electric box can be conveniently installed by utilizing the rear cover plate which is detachably arranged at the rear side of the second chamber; utilize the front panel that the second cavity front side can dismantle the setting, cooperate the absent area on the electrical apparatus box to maintain first compressor, second compressor and electrical apparatus box and change.

Description

Dual-system air conditioner

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a dual-system air conditioner.

Background

With the development of technology, air conditioning applications are becoming more and more widespread. For example, a large number of electronic devices are arranged in a machine room such as a railway, the heat productivity is large, and the air conditioner in the machine room is required to realize annual refrigeration.

At present, most of air conditioners in machine rooms such as railways adopt single-system air conditioners, and alternate refrigeration and annual refrigeration are realized by increasing the number of air conditioning equipment. There are also two air conditioners provided in part of the machine room, the two air conditioners including an indoor unit, an outdoor unit and two refrigeration cycle systems. The two refrigeration cycle systems of the double-system air conditioner independently operate and can be controlled simultaneously, after the air conditioner receives a starting command, the two systems independently operate and can also operate simultaneously, and after the air conditioner receives a shutdown command, the two systems can also be closed independently or can be closed simultaneously. However, the internal structural layout of the dual-system air conditioner on the market is not reasonable enough, which results in complex structural layout and difficult installation and maintenance.

Disclosure of Invention

The utility model aims to provide an air conditioner so as to improve the air conditioner in the related art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

according to an aspect of the present utility model, there is provided a dual system air conditioner including an indoor unit and an outdoor unit; the indoor unit includes: a first housing configured as a casing of the indoor unit; a first chamber and a second chamber which are mutually separated are arranged in the first shell; a front panel is detachably arranged on the front side wall of the second chamber, and a rear cover plate is detachably arranged on the rear side wall of the second chamber; the first evaporating fan and the second evaporating fan are arranged in the first cavity and are used for supplying air to the front side of the first shell respectively; the first evaporator and the second evaporator are arranged in the first cavity, the first evaporator is arranged on the air inlet side of the first evaporation fan, and the second evaporator is arranged on the air inlet side of the second evaporation fan; the first compressor and the second compressor are transversely arranged in the second cavity in parallel; the electric appliance box is arranged in the second cavity and is arranged at the front sides of the first compressor and the second compressor; a gap area is formed on the electrical box and is communicated with the space on the front side and the rear side of the electrical box; wherein when the front panel is opened, the first compressor or the second compressor is exposed to the front side of the second chamber through the defect area; when the back cover plate is opened, both the first compressor and the second compressor can be exposed to the back side of the second chamber.

In some embodiments of the present utility model, the electrical box includes a main body portion and a capacity-increasing portion integrally connected; the main body part is vertically arranged, the capacity-increasing part is formed at the top of the main body part, and the capacity-increasing part protrudes to one side of the main body part to form a protruding part; the capacity increasing part is communicated with the inside of the main body part and is positioned at the upper sides of the first compressor and the second compressor; the absent area is formed between the main body portion and the protruding portion.

In some embodiments of the present utility model, a hook is provided at a peripheral edge of the back cover plate, and a bayonet disposed opposite to the hook is provided at a back side of the first housing;

the clamping hooks are detachably clamped at the clamping openings so as to cover the rear cover plate on the back side of the second cavity.

In some embodiments of the present utility model, a partition is disposed in the first housing, and the partition is disposed in the first housing transversely and partitions a space in the first housing up and down; the space of baffle upside is first cavity, the space of baffle downside is the second cavity.

In some embodiments of the present utility model, the first evaporating fan and the second evaporating fan are disposed in the first chamber at an upper-lower interval; the first evaporator and the second evaporator are connected up and down and form an integrated structure; the first evaporator and the first evaporation fan are oppositely arranged at intervals front and back; the second evaporator and the second evaporation fan are oppositely arranged at intervals.

In some embodiments of the present utility model, the outdoor unit includes: a second housing configured as a casing of the outdoor unit; the first condensing fan and the second condensing fan are arranged in the second shell and are used for respectively supplying air to the outside of the second shell; the first condenser and the second condenser are arranged in the second shell, the first condenser is arranged on the air inlet side of the first condensing fan, and the second condenser is arranged on the air inlet side of the second condensing fan; the first compressor, the first condenser and the first evaporator are sequentially connected to form a first refrigeration cycle; the second compressor, the second condenser and the second evaporator are sequentially connected to form a second refrigeration cycle.

In some embodiments of the present utility model, a first fixing plate is disposed on an outer wall of the first housing, and a first stop valve, a second stop valve, a third stop valve and a fourth stop valve are disposed on the first fixing plate at intervals; the first stop valve is arranged at the outlet end of the first compressor, the second stop valve is arranged at the outlet end of the second compressor, the third stop valve is arranged at the inlet end of the first evaporator, and the fourth stop valve is arranged at the inlet end of the second evaporator; a second fixed plate is arranged in the second shell, and a fifth stop valve, a sixth stop valve, a seventh stop valve and an eighth stop valve which are arranged at intervals are arranged on the second fixed plate; the fifth stop valve is arranged at the inlet end of the first condenser, the sixth stop valve is arranged at the inlet end of the second condenser, the seventh stop valve is arranged at the outlet end of the first condenser, and the eighth stop valve is arranged at the outlet end of the second condenser.

In some embodiments of the present utility model, a third chamber and a fourth chamber which are separated from each other are provided in the second housing; the first condensing fan, the second condensing fan, the first condenser and the second condenser are all arranged in the third cavity; a front cover plate is detachably arranged on the front side of the fourth chamber; the second fixing plate is fixed in the fourth chamber and is arranged at intervals with the front cover plate, and a mounting area is formed between the second fixing plate and the front cover plate; the fifth stop valve, the sixth stop valve, the seventh stop valve and the eighth stop valve are all arranged on the front side wall of the second fixing plate and are located in the installation area.

In some embodiments of the present utility model, a first fixing wall that is bent and extended forward is provided at one end of the second fixing plate, and a front end of the first fixing wall is fixed on a front wall of the fourth chamber; the other end of the second fixing plate is provided with a second fixing wall which is bent and extended backwards, and the second fixing wall is fixed on the side wall of the fourth chamber.

In some embodiments of the present utility model, the first condensation fan and the second condensation fan are disposed in the third chamber at an upper-lower interval; the first condenser and the second condenser are connected up and down and form an integrated structure; the first condenser and the first condensing fan are oppositely arranged at intervals front and back; the second condenser and the second condensing fan are oppositely arranged at intervals.

As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

in the dual-system air conditioner provided by the embodiment of the utility model, the second shell of the indoor unit is divided into the first cavity and the second cavity, and the first evaporation fan, the second evaporation fan, the first evaporator and the second evaporator are arranged in the first cavity and are used for forming cold air; simultaneously, the first compressor, the second compressor and the electrical box are arranged in the second cavity, and the front panel and the rear cover plate are matched and respectively and detachably installed on the front side and the rear side of the second cavity. During assembly, the electrical box, the first compressor and the second compressor can be sequentially arranged in the second chamber from the back side of the second chamber, and the front panel can be opened during later use and maintenance, so that the electrical box, the first compressor and the second compressor can be maintained and replaced from the front side of the second chamber. And utilize the lack position district that forms on the electrical apparatus box, make first compressor or second compressor can directly expose in the front side of second cavity to be convenient for directly maintain, change first compressor or second compressor, in addition when first compressor or second compressor of exposing demolish the back, can maintain, change another compressor.

Drawings

Fig. 1 is a block diagram of a refrigerating system of a dual system air conditioner according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of an indoor unit of a dual system air conditioner according to an embodiment of the present utility model.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a front view of fig. 2 with the front panel removed.

Fig. 5 is a schematic view of the structure of fig. 2 at another view angle.

Fig. 6 is an exploded view of fig. 5.

Fig. 7 is a rear view of fig. 5 with the back cover plate removed.

Fig. 8 is a schematic view of the structure of the back cover in fig. 6.

Fig. 9 is a schematic structural view of the electrical box of fig. 3.

Fig. 10 is an exploded view of fig. 9.

Fig. 11 is a schematic view of the structure of fig. 9 at another view angle.

Fig. 12 is an exploded view of fig. 11.

Fig. 13 is a schematic view of the first evaporator and the second evaporator in fig. 3.

Fig. 14 is a schematic structural view of the first fixing plate of fig. 3.

Fig. 15 is a schematic view illustrating a structure of an outdoor unit of a dual system air conditioner according to an embodiment of the present utility model.

Fig. 16 is an exploded view of fig. 15.

Fig. 17 is another exploded view of fig. 15.

Fig. 18 is a schematic structural view of the second fixing plate in fig. 17.

The reference numerals are explained as follows: 100. an indoor unit; 200. an outdoor unit; 11. a first compressor; 12. a first condenser; 13. a first condensing fan; 14. a first evaporator; 15. a first evaporation fan; 16. a first throttle valve; 101. a first stop valve; 102. a second shut-off valve; 103. a third stop valve; 104. a fourth shut-off valve; 21. a second compressor; 22. a second condenser; 23. a second condensing fan; 24. a second evaporator; 25. a second evaporation fan; 26. a second throttle valve; 201. a fifth shut-off valve; 202. a sixth shut-off valve; 203. a seventh stop valve; 204. an eighth shutoff valve; 3. a first housing; 301. a bayonet; 302. a first air outlet; 303. a second air outlet; 31. a first chamber; 32. a second chamber; 33. a partition plate; 34. a front panel; 35. a back cover plate; 351. a clamping hook; 36. a ventilation grille; 37. a first fixing plate; 4. an electrical box; 40. a defect region; 41. a front shell; 42. a main body portion; 43. a capacity-increasing part; 431. a protruding portion; 44. expanding the capacity of the shell; 5. a second housing; 501. a third air outlet; 502. a fourth air outlet; 51. a fourth chamber; 52. a front cover plate; 53. a second fixing plate; 531. a first fixed wall; 532. and a second fixed wall.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

At present, most of air conditioners in machine rooms such as railways adopt single-system air conditioners, and alternate refrigeration and annual refrigeration are realized by increasing the number of air conditioning equipment. There are also two air conditioners provided in part of the machine room, the two air conditioners including an indoor unit, an outdoor unit and two refrigeration cycle systems. The two refrigeration cycle systems of the double-system air conditioner independently operate and can be controlled simultaneously, after the air conditioner receives a starting command, the two systems independently operate and can also operate simultaneously, and after the air conditioner receives a shutdown command, the two systems can also be closed independently or can be closed simultaneously. However, the internal structural layout of the dual-system air conditioner on the market is not reasonable enough, which results in complex structural layout and difficult installation and maintenance.

Fig. 1 is a block diagram of a refrigerating system of a dual system air conditioner according to an embodiment of the present utility model.

Referring to fig. 1, the dual-system air conditioner provided by the embodiment of the utility model can be applied to the whole year refrigeration in a railway machine room. The dual system air conditioner mainly includes an indoor unit 100, an outdoor unit 200, and two sets of refrigerating systems disposed in the indoor unit 100 and the outdoor unit 200. The two sets of refrigeration systems are a first refrigeration system and a second refrigeration system respectively.

The first refrigeration system includes a first compressor 11, a first condenser 12, a first condensing fan 13, a first evaporator 14, and a first evaporating fan 15. The first compressor 11, the first evaporator 14, and the first evaporation fan 15 are all disposed in the indoor unit 100, and the first condenser 12 and the first condensation fan 13 are all disposed in the outdoor unit 200. The gas outlet of the first compressor 11 is connected with the inlet of the first condenser 12, the outlet of the first condenser 12 is connected with the inlet of the first evaporator 14, the outlet of the first evaporator 14 is connected with the gas inlet of the first compressor 11, the refrigerant sequentially circulates in the first compressor 11, the first evaporator 14 and the first evaporation fan 15, and is blown to the first evaporator 14 through the first evaporation fan 15 to generate cold air and realize refrigeration, and is blown to the first condenser 12 through the first condensation fan 13 to generate hot air and realize heat dissipation.

The second refrigeration system includes a second compressor 21, a second condenser 22, a second condensing fan 23, a second evaporator 24, and a second evaporating fan 25. The second compressor 21, the second evaporator 24 and the second evaporation fan 25 are all disposed in the indoor unit 100, and the second condenser 22 and the second condensation fan 23 are all disposed in the outdoor unit 200. The gas outlet of the second compressor 21 is connected with the inlet of the second condenser 22, the outlet of the second condenser 22 is connected with the inlet of the second evaporator 24, the outlet of the second evaporator 24 is connected with the gas inlet of the second compressor 21, the refrigerant sequentially circulates in the second compressor 21, the second evaporator 24 and the second evaporation fan 25, and is blown to the second evaporator 24 through the second evaporation fan 25 to generate cold air and realize refrigeration, and is blown to the second condenser 22 through the second condensation fan 23 to generate hot air and realize heat dissipation.

The first refrigerating system and the second refrigerating system can be operated independently and alternately or simultaneously, so that the reliability can be improved, and the energy-saving effect can be achieved.

In some embodiments, the first refrigeration system further includes a first throttle valve 16, where the first throttle valve 16 is disposed between the first condenser 12 and the first evaporator 14, and the first throttle valve 16 is disposed in the indoor unit 100, and the first throttle valve 16 is used to throttle and decompress the refrigerant flowing out of the first condenser 12, and then send the refrigerant to the first evaporator 14.

In some embodiments, the second refrigeration system further includes a second throttle valve 26, where the second throttle valve 26 is disposed between the second condenser 22 and the second evaporator 24, and the second throttle valve 26 is disposed in the indoor unit 100, and the second throttle valve 26 is used for throttling and depressurizing the refrigerant flowing out of the second condenser 22 and then delivering the refrigerant to the second evaporator 24.

Fig. 2 is a schematic structural diagram of an indoor unit 100 of a dual-system air conditioner according to an embodiment of the present utility model. Fig. 3 is an exploded view of fig. 2.

Referring to fig. 2 and 3, the indoor unit 100 includes a first casing 3, and a first compressor 11, a second compressor 21, a first evaporator 14, a second evaporator 24, a first evaporation fan 15, a second evaporation fan 25, and an electrical box 4 disposed in the first casing 3.

The first casing 3 is a hollow casing structure, and the first casing 3 is configured as an outer casing of the indoor unit 100. The inner space of the first housing 3 is used to provide installation space for the first compressor 11, the second compressor 21, the first evaporator 14, the second evaporator 24, the first evaporation fan 15, the second evaporation fan 25, and the electrical box 4.

In some embodiments, the first housing 3 is a rectangular hollow housing, the first housing 3 extends vertically, and the first housing 3 is internally divided into a first chamber 31 and a second chamber 32 which are isolated from each other up and down. The first chamber 31 is provided on the upper side of the second chamber 32. The first evaporator 14, the second evaporator 24, the first evaporating fan 15 and the second evaporating fan 25 are all arranged in the first chamber 31, and the first compressor 11, the second compressor 21 and the electrical box 4 are all arranged in the second chamber 32.

In some embodiments, a partition 33 is disposed in the first housing 3, and the partition 33 extends transversely in the first housing 3 and partitions the space in the first housing 3 up and down. The space above the partition 33 is the first chamber 31, and the space below the partition 33 is the second chamber 32.

It should be noted that, in other embodiments, the partition 33 may be disposed vertically and divide the space in the first housing 3 left and right, that is, the first chamber 31 and the second chamber 32 may be disposed left and right separately.

Fig. 4 is a front view of fig. 2 with the front panel 34 removed.

Referring to fig. 2-4, in some embodiments, a front panel 34 is removably disposed on a front sidewall of the second chamber 32. The electrical box 4 is provided in the front of the second chamber 32, adjacent to the front panel 34. Thus, the electrical box 4 can be directly seen after the front panel 34 is detached. The electric box 4 is internally provided with electric components such as a circuit board, a controller and the like.

Fig. 5 is a schematic view of the structure of fig. 2 at another view angle. Fig. 6 is an exploded view of fig. 5. Fig. 7 is a rear view of fig. 5 with the back cover plate 35 removed. Fig. 8 is a schematic structural view of the back cover 35 in fig. 6.

Referring to fig. 2-8, in some embodiments, a back cover 35 is removably provided on the back side wall of the second chamber 32. The first compressor 11 and the second compressor 21 are arranged side by side at the rear of the second chamber 32, and the first compressor 11 and the second compressor 21 are arranged at the back side of the electrical box 4 and close to the rear cover plate 35. Therefore, when the back cover 35 is opened, both the first compressor 11 and the second compressor 21 can be exposed to the back side of the second chamber 32, i.e. the first compressor 11 and the second compressor 21 can be directly seen.

Referring to fig. 6 and 8, in some embodiments, a bayonet 301 is disposed on a peripheral side of a back surface of the first housing 3, the bayonet 301 is disposed at a peripheral side edge of the second chamber 32, a plurality of hooks 351 are disposed at a peripheral side edge of the back cover 35, the hooks and the bayonet 301 are disposed in one-to-one correspondence, the hooks 351 are detachably clamped at the bayonet 301, and the back cover 35 is further detachably covered on a back side of the second chamber 32, so that the first compressor 11 and the second compressor 21 are conveniently installed in the second chamber 32 from a back side of the second chamber 32, and assembly is convenient.

In the assembly of the product, the electrical box 4 may be installed and fixed in the second chamber 32, the first compressor 11 and the second compressor 21 may be installed in the second chamber 32 from the back side of the second chamber 32, the front panel 34 may be installed on the front side of the second chamber 32, and the rear cover 35 may be installed on the back side of the second chamber 32.

Fig. 9 is a schematic structural view of the electrical box 4 in fig. 3.

Referring to fig. 4 and 9, in some embodiments, the electrical box 4 is formed with a defect area 40, and the defect area 40 communicates with the space on the front and rear sides of the electrical box 4. The first and second compressors 11 and 21 are disposed on the back side of the electrical box 4, and the first compressor 11 can be exposed to the front side of the electrical box 4 through the defect area 40. Accordingly, when the front panel 34 is detached from the front wall in the second chamber 32, the first compressor 11 can be exposed to the front side of the second chamber 32 through the defect area 40.

After the user has used the indoor unit 100 for a long period of time and when it is necessary to maintain the indoor unit 100 and the components in the indoor unit 100, the user can detach the front panel 34 to expose the electrical box 4 and the first compressor 11, and further maintain and replace the components in the electrical box 4 and the first compressor 11. The first compressor 11 is detachable from the defect area 40 and is taken out from the second chamber 32, and the second compressor 21 can be further maintained and replaced from the defect area 40.

In other embodiments, the second compressor 21 may be exposed to the front side of the second chamber 32 through the defect area 40. In other embodiments, two cutaway areas 40 are formed on the electrical box 4, the first compressor 11 can be exposed to the front side of the second chamber 32 through one cutaway area 40, and the second compressor 21 can be exposed to the front side of the second chamber 32 through the other cutaway area 40.

Fig. 10 is an exploded view of fig. 9.

Referring to fig. 9 and 10, in some embodiments, a detachable front case 41 is provided on a front wall of the electrical box 4, and the front case 41 covers a front side of the electrical box 4. Thus, by opening the front case 41, the devices within the electrical box 4 can be maintained.

Fig. 11 is a schematic view of the structure of fig. 9 at another view angle. Fig. 12 is an exploded view of fig. 11.

Referring to fig. 9 and 12, in some embodiments, the electrical box 4 includes a body portion 42 and a compatibilizer portion 43 integrally connected. The body portion 42 is disposed vertically, and the body portion 42 is fixed to the front side of the second chamber 32. The capacity-increasing portion 43 is formed on the top of the main body 42, the capacity-increasing portion 43 is communicated with the inside of the main body 42, and the capacity-increasing portion 43 protrudes to one side of the main body 42 to form a protruding portion 431. The main body 42 and the protruding portion 431 of the capacity-increasing portion 43 enclose and form a defect area 40. The capacity-increasing portion 43 is located in the upper side spaces of the first and second compressors 11 and 21, that is, the first and second compressors 11 and 21 are located below the capacity-increasing portion 43, so that the first compressor 11 can be installed at the backside of the defective portion 40 and removed from the defective portion 40 into the second chamber 32.

Since the front case 41 is simultaneously covered on the front sides of the main body 42 and the capacity-increasing portion 43, the front case 41 can be opened to simultaneously open the main body 42 and the capacity-increasing portion 43, and the components in the main body 42 and the capacity-increasing portion 43 can be maintained and replaced.

Referring to fig. 9 and 12, in some embodiments, a back side of the capacity-increasing portion 43 is convexly provided with a capacity-increasing shell 44, and the capacity-increasing shell 44 protrudes from the back side of the capacity-increasing portion 43 toward the rear end of the second chamber 32. The inside of the expansion shell 44 is communicated with the expansion part 43, so as to increase the internal space of the electrical box 4, and more electrical devices can be accommodated in the electrical box 4. The capacity expansion shell 44 is located in the upper side space of the first compressor 11 and the second compressor 21, so that the capacity expansion shell 44 does not occupy the installation space of the first compressor 11 and the second compressor 21, and the space utilization rate in the second chamber 32 can be improved.

In some embodiments, the expansion shell 44 is removably disposed on the back of the expansion portion 43. Therefore, when the back cover 35 is opened, the capacity expansion shell 44 can be detached to maintain and replace the electric devices in the electric box 4.

Referring to fig. 2-4, in some embodiments, the first and second evaporation fans 15 and 25 are disposed within the first chamber 31 and near a front sidewall of the first chamber 31. The front side wall of the first casing 3 is provided with a first air outlet 302 and a second air outlet 303, and the air outlet side of the first evaporation fan 15 faces the first air outlet 302, i.e. the front side of the first casing 3. The first evaporator 14 is disposed on the air intake side of the first evaporation fan 15, that is, the first evaporator 14 is disposed on the back side of the first evaporation fan 15, and the first evaporator 14 can generate cool air on the back side of the first evaporation fan 15. The second evaporator 24 is disposed on the air intake side of the second evaporation fan 25, that is, the second evaporator 24 is disposed on the back side of the second evaporation fan 25, and the second evaporator 24 can generate cool air on the back side of the second evaporation fan 25.

Therefore, when the first evaporation fan 15 is operated, the first evaporation fan 15 can extract cool air generated by the first evaporator 14, and cool air is supplied to the front side of the first casing 3 through the first air outlet 302 to cool. Similarly, when the second evaporation fan 25 is operated, the second evaporation fan 25 can extract cool air generated by the second evaporator 24, and cool air is delivered to the front side of the first housing 3 through the second air outlet 303 for cooling.

Referring to fig. 3 to 5, in some embodiments, the back side of the first housing 3 is provided with a ventilation grille 36, and the ventilation grille 36 is provided on the rear side wall of the first chamber 31. The first evaporator 14 and the second evaporator 24 are each provided with a rear end of the first chamber 31 and are close to the ventilation grille 36. When the first evaporation fan 15 works, air outside the first casing 3 can enter the first chamber 31 through the ventilation grille 36 and flow through the first evaporator 14, so that cold energy on the first evaporator 14 is taken away, cold air is generated, and the cold air is conveyed into a space on the front side of the first casing 3 through the first evaporation fan 15 and the first air outlet 302. When the second evaporation fan 25 works, air outside the first casing 3 can also enter the first chamber 31 through the ventilation grille 36 and flow through the second evaporator 24 to take away cold energy on the second evaporator 24, generate cold air, and be conveyed into a space on the front side of the first casing 3 through the second evaporation fan 25 and the second air outlet 303.

Fig. 13 is a schematic structural view of the first evaporator 14 and the second evaporator 24 in fig. 3.

Referring to fig. 3 and 13, in some embodiments, the first and second evaporation fans 15 and 25 are disposed in the first chamber 31 at an upper and lower interval. Meanwhile, the first evaporator 14 and the second evaporator 24 are connected up and down and form a unitary structure. The first evaporator 14 and the first evaporating fan 15 are oppositely arranged at intervals. The second evaporator 24 is disposed opposite to the second evaporation fan 25 with a front-rear interval. The first evaporator 14 and the second evaporator 24 adopt an integrated structure, which is favorable for reducing the volume of the evaporator, and is favorable for the structural layout of the first evaporation fan 15 and the second evaporation fan 25, thereby being favorable for reducing the volume of the indoor unit 100, simplifying the structure of the indoor unit 100 and reducing the cost.

Fig. 14 is a schematic structural view of the first fixing plate 37 in fig. 3.

Referring to fig. 14, in conjunction with fig. 1 to 7, in some embodiments, a first fixing plate 37 is provided on an outer wall of the first housing 3, and a first stop valve 101, a second stop valve 102, a third stop valve 103, and a fourth stop valve 104 are provided on the first fixing plate 37. The first stop valve 101 is disposed at an outlet end of the first compressor 11, that is, the first stop valve 101 is disposed between an air outlet of the first compressor 11 and an inlet of the first condenser 12. The second stop valve 102 is arranged at the outlet end of the second compressor 21, i.e. the second stop valve 102 is arranged between the outlet of the second compressor 21 and the inlet of the second condenser 22. The third shut-off valve 103 is arranged at the inlet end of the first evaporator 14, i.e. the third shut-off valve 103 is arranged between the inlet of the first evaporator 14 and the outlet of the first condenser 12. The fourth shut-off valve 104 is provided at the inlet end of the second evaporator 24, i.e. the fourth shut-off valve 104 is provided between the inlet of the second evaporator 24 and the outlet of the second condenser 22.

The first stop valve 101, the second stop valve 102, the third stop valve 103, and the fourth stop valve 104 are all located outside the first casing 3. Accordingly, the piping between the indoor unit 100 and the outdoor unit 200 may be closed by closing the first, second, third, and fourth shut-off valves 101, 102, 103, and 104, so as to maintain the indoor unit 100 alone or the piping between the indoor unit 100 and the outdoor unit 200.

In some embodiments, the first fixing plate 37 is vertically arranged, and the first stop valve 101, the second stop valve 102, the third stop valve 103 and the fourth stop valve 104 are sequentially staggered and arranged at intervals, so that the layout of the pipeline is optimized, the volume of the pipeline is reduced, and meanwhile, the connection and maintenance of the pipeline are facilitated.

Fig. 15 is a schematic structural diagram of an outdoor unit 200 of a dual-system air conditioner according to an embodiment of the present utility model. Fig. 16 is an exploded view of fig. 15.

Referring to fig. 15 to 16, the outdoor unit 200 includes a second casing 5, and a first condenser 12, a second condenser 22, a first condensing fan 13, and a second condensing fan 23 disposed in the second casing 5. The second casing 5 is a hollow casing structure, and the second casing 5 is configured as a casing of the outdoor unit 200. The inner space of the second housing 5 is used to provide installation space for the first condenser 12, the second condenser 22, the first condensing fan 13, and the second condensing fan 23.

Fig. 17 is another exploded view of fig. 15.

Referring to fig. 15 to 17, in some embodiments, the second housing 5 is a square hollow housing, and the second housing 5 is internally divided into a third chamber (not shown) and a fourth chamber 51 that are isolated from each other.

Wherein, the first condensing fan 13 and the second condensing fan 23 are both disposed in the third chamber and are close to the front side wall of the third chamber, and the front side wall of the second housing 5 is provided with a third air outlet 501 and a fourth air outlet 502, and the air outlet side of the first condensing fan 13 faces the third air outlet 501, i.e. faces the front side of the second housing 5. The first condenser 12 is arranged on the air inlet side of the first condensing fan 13, that is, the first condenser 12 is arranged on the back side of the first condensing fan 13, and the first condenser 12 can generate hot air on the back side of the first condensing fan 13. The second condenser 22 is arranged on the air inlet side of the second condensing fan 23, that is, the second condenser 22 is arranged on the back side of the second condensing fan 23, and the second condenser 22 can generate hot air on the back side of the second condensing fan 23.

Therefore, when the first condensing fan 13 is operated, the first condensing fan 13 can extract hot air generated by the first condenser 12, and heat is radiated by the hot air supplied to the front side of the second casing 5 through the third air outlet 501. Similarly, when the second condensing fan 23 works, the second condensing fan 23 can extract hot air generated by the second condenser 22, and the hot air is conveyed to the front side of the second housing 5 through the fourth air outlet 502 for heat dissipation.

Referring to fig. 15 and 16, in some embodiments, the first condensing fan 13 and the second condensing fan 23 are disposed in the third chamber at an upper and lower interval. Meanwhile, the first condenser 12 and the second condenser 22 are connected up and down and form an integral structure. The first condenser 12 and the first condensing fan 13 are oppositely arranged at intervals. The second condenser 22 and the second condensing fan 23 are arranged in a front-back interval opposite mode. The first condenser 12 and the second condenser 22 adopt an integrated structure, which is favorable for reducing the volume of the condenser, and is favorable for the structural layout of the first condensing fan 13 and the second condensing fan 23, thereby being favorable for reducing the volume of the outdoor unit 200, simplifying the structure of the outdoor unit 200 and reducing the cost.

Referring to fig. 17, in some embodiments, a part of the control components are disposed in the fourth chamber 51, i.e., a part of the control components of the refrigeration system may be disposed in the fourth chamber 51 of the outdoor unit 200.

Referring to fig. 15 to 17, in some embodiments, a front cover plate 52 is detachably disposed on a front sidewall of the fourth chamber 51. Thus, the control component in the fourth chamber 51 can be directly seen after the front cover plate 52 is detached, so that the control component can be maintained and replaced.

Fig. 18 is a schematic structural view of the second fixing plate 53 in fig. 17.

Referring to fig. 15 to 18, in some embodiments, a second fixing plate 53 is disposed in the fourth chamber 51, and a fifth stop valve 201, a sixth stop valve 202, a seventh stop valve 203, and an eighth stop valve 204 are disposed on the second fixing plate 53. The fifth stop valve 201 is disposed at an inlet end of the first condenser 12, that is, the fifth stop valve 201 is disposed between an air outlet of the first compressor 11 and an inlet of the first condenser 12. The sixth shut-off valve 202 is disposed at the inlet end of the second condenser 22, i.e., the second shut-off valve 102 is disposed between the outlet of the second compressor 21 and the inlet of the second condenser 22. The seventh shut-off valve 203 is arranged at the outlet end of the first condenser 12, i.e. the seventh shut-off valve 203 is arranged between the outlet of the first condenser 12 and the inlet of the first evaporator 14. The eighth shut-off valve 204 is provided at the outlet end of the second condenser 22, i.e. the eighth shut-off valve 204 is provided between the outlet of the second condenser 22 and the inlet of the second evaporator 24.

The fifth stop valve 201, the sixth stop valve 202, the seventh stop valve 203, and the eighth stop valve 204 are all located inside the second casing 5. Accordingly, the piping between the outdoor unit 200 and the indoor unit 100 may be closed by closing the fifth cutoff valve 201, the sixth cutoff valve 202, the seventh cutoff valve 203, and the eighth cutoff valve 204, so that the outdoor unit 200 is maintained alone or the piping between the indoor unit 100 and the outdoor unit 200 is maintained.

In some embodiments, the second fixing plate 53 is spaced apart from the front sidewall of the fourth chamber 51, the second fixing plate 53 is spaced apart from the rear side of the front cover plate 52, and a mounting area is formed between the second fixing plate 53 and the front cover plate 52. The fifth stop valve 201, the sixth stop valve 202, the seventh stop valve 203 and the eighth stop valve 204 are all disposed inside the fourth chamber 51 and are all disposed on the front side wall of the second fixed plate 53, that is, the fifth stop valve 201, the sixth stop valve 202, the seventh stop valve 203 and the eighth stop valve 204 are all disposed in the installation area between the second fixed plate 53 and the front cover plate 52. After the front cover plate 52 is detached or opened, the fifth stop valve 201, the sixth stop valve 202, the seventh stop valve 203 and the eighth stop valve 204 are exposed to the front side wall of the second fixed plate 53 and exposed to the fourth chamber 51, so that the fifth stop valve 201, the sixth stop valve 202, the seventh stop valve 203 and the eighth stop valve 204 can be conveniently controlled to be opened or closed.

Referring to fig. 17 and 18, in some embodiments, a first fixing wall 531 extending in a forward bending manner is provided at one end of the second fixing plate 53, and a front end of the first fixing wall 531 is fixed to a front wall of the fourth chamber 51, so that the second fixing plate 53 can be fixed to a back side of the front cover plate 52 at intervals.

Referring to fig. 17 and 18, in some embodiments, the other end of the second fixing plate 53 is provided with a second fixing wall 532 extending in a backward bending manner, and the second fixing wall 532 is fixed on a side wall of the fourth chamber 51, so that the second fixing plate 53 can be firmly fixed in the fourth chamber 51.

As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

in the dual-system air conditioner of the embodiment of the present utility model, the second casing 5 of the indoor unit 100 is divided into the first chamber 31 and the second chamber 32, and the first evaporation fan 15, the second evaporation fan 25, the first evaporator 14 and the second evaporator 24 are disposed in the first chamber 31 for forming cool air; the first compressor 11, the second compressor 21 and the electrical box 4 are simultaneously arranged in the second chamber 32, and the front panel 34 and the rear cover 35 are respectively detachably mounted on the front side and the rear side of the second chamber 32. In the assembly, the electrical box 4, the first compressor 11 and the second compressor 21 may be sequentially installed in the second chamber 32 from the rear side of the second chamber 32, and the front panel 34 may be opened for the maintenance and replacement of the electrical box 4, the first compressor 11 and the second compressor 21 from the front side of the second chamber 32 in the later use and maintenance. And the first compressor 11 or the second compressor 21 can be directly exposed to the front side of the second chamber 32 by utilizing the defect area 40 formed on the electrical box 4, so that the first compressor 11 or the second compressor 21 can be directly maintained and replaced, and in addition, when the exposed first compressor 11 or second compressor 21 is removed, the other compressor can be maintained and replaced.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. The double-system air conditioner is characterized by comprising an indoor unit and an outdoor unit;

the indoor unit includes:

a first housing configured as a casing of the indoor unit; a first chamber and a second chamber which are mutually separated are arranged in the first shell; a front panel is detachably arranged on the front side wall of the second chamber, and a rear cover plate is detachably arranged on the rear side wall of the second chamber;

the first evaporating fan and the second evaporating fan are arranged in the first cavity and are used for supplying air to the front side of the first shell respectively;

the first evaporator and the second evaporator are arranged in the first cavity, the first evaporator is arranged on the air inlet side of the first evaporation fan, and the second evaporator is arranged on the air inlet side of the second evaporation fan;

the first compressor and the second compressor are transversely arranged in the second cavity in parallel;

the electric appliance box is arranged in the second cavity and is arranged at the front sides of the first compressor and the second compressor; a gap area is formed on the electrical box and is communicated with the space on the front side and the rear side of the electrical box;

wherein when the front panel is opened, the first compressor or the second compressor is exposed to the front side of the second chamber through the defect area;

when the back cover plate is opened, both the first compressor and the second compressor can be exposed to the back side of the second chamber.

2. The dual system air conditioner of claim 1, wherein the electrical box comprises a body part and a capacity increasing part integrally connected;

the main body part is vertically arranged;

the capacity increasing part is formed at the top of the main body part and protrudes to one side of the main body part to form a protruding part;

the capacity increasing part is communicated with the inside of the main body part and is positioned at the upper sides of the first compressor and the second compressor;

the absent area is formed between the main body portion and the protruding portion.

3. The dual system air conditioner of claim 1, wherein a hook is provided at a peripheral edge of the back cover plate, and a bayonet disposed opposite to the hook is provided at a back side of the first housing;

the clamping hooks are detachably clamped at the clamping openings so as to cover the rear cover plate on the back side of the second cavity.

4. The dual system air conditioner of claim 1, wherein a partition is provided in the first housing, and the partition is laterally disposed in the first housing and partitions a space in the first housing up and down; the space of baffle upside is first cavity, the space of baffle downside is the second cavity.

5. The dual system air conditioner of claim 1, wherein said first and second evaporator fans are disposed in said first chamber in an up-down spaced relationship;

the first evaporator and the second evaporator are connected up and down and form an integrated structure;

the first evaporator and the first evaporation fan are oppositely arranged at intervals front and back;

the second evaporator and the second evaporation fan are oppositely arranged at intervals.

6. The dual system air conditioner of claim 1, wherein the outdoor unit comprises:

a second housing configured as a casing of the outdoor unit;

the first condensing fan and the second condensing fan are arranged in the second shell and are used for respectively supplying air to the outside of the second shell;

the first condenser and the second condenser are arranged in the second shell, the first condenser is arranged on the air inlet side of the first condensing fan, and the second condenser is arranged on the air inlet side of the second condensing fan;

the first compressor, the first condenser and the first evaporator are sequentially connected to form a first refrigeration cycle; the second compressor, the second condenser and the second evaporator are sequentially connected to form a second refrigeration cycle.

7. The dual system air conditioner of claim 6, wherein a first fixing plate is provided on an outer wall of the first housing, and a first stop valve, a second stop valve, a third stop valve and a fourth stop valve are provided on the first fixing plate at intervals;

the first stop valve is arranged at the outlet end of the first compressor, the second stop valve is arranged at the outlet end of the second compressor, the third stop valve is arranged at the inlet end of the first evaporator, and the fourth stop valve is arranged at the inlet end of the second evaporator;

a second fixed plate is arranged in the second shell, and a fifth stop valve, a sixth stop valve, a seventh stop valve and an eighth stop valve which are arranged at intervals are arranged on the second fixed plate;

the fifth stop valve is arranged at the inlet end of the first condenser, the sixth stop valve is arranged at the inlet end of the second condenser, the seventh stop valve is arranged at the outlet end of the first condenser, and the eighth stop valve is arranged at the outlet end of the second condenser.

8. The dual system air conditioner as set forth in claim 7, wherein said second housing has a third chamber and a fourth chamber separated from each other;

the first condensing fan, the second condensing fan, the first condenser and the second condenser are all arranged in the third cavity;

a front cover plate is detachably arranged on the front side of the fourth chamber;

the second fixing plate is fixed in the fourth chamber and is arranged at intervals with the front cover plate, and a mounting area is formed between the second fixing plate and the front cover plate;

the fifth stop valve, the sixth stop valve, the seventh stop valve and the eighth stop valve are all arranged on the front side wall of the second fixing plate and are located in the installation area.

9. The dual system air conditioner as set forth in claim 8, wherein one end of said second fixing plate is provided with a first fixing wall bent and extended forward, and a front end of said first fixing wall is fixed to a front wall of said fourth chamber; the other end of the second fixing plate is provided with a second fixing wall which is bent and extended backwards, and the second fixing wall is fixed on the side wall of the fourth chamber.

10. The dual system air conditioner of claim 8, wherein said first condensing fan and said second condensing fan are disposed in said third chamber in an up-down spaced relationship;

the first condenser and the second condenser are connected up and down and form an integrated structure; the first condenser and the first condensing fan are oppositely arranged at intervals front and back; the second condenser and the second condensing fan are oppositely arranged at intervals.