CN213178584U - Multi-working-condition cooling system - Google Patents

Abstract

The utility model discloses a multiplex condition cooling system relates to air conditioning technology field for solve the narrow problem of computer lab refrigeration product range of application among the prior art. The system comprises an air conditioner outdoor unit, an air conditioner indoor unit and an evaporation refrigerating machine, wherein the air conditioner indoor unit comprises an indoor case and an evaporator, an air inlet and an air outlet are formed in the indoor case, a cooling air channel is formed in the indoor case, one end of the cooling air channel is connected with the air inlet, the other end of the cooling air channel is connected with the air outlet, the evaporator is positioned in the cooling air channel, and an air inlet valve is arranged at the air inlet; the evaporation refrigerator is cooled by air according to an evaporation cooling principle, the evaporation refrigerator comprises a fresh air inlet and a fresh air outlet, the fresh air outlet is communicated with a cooling air channel at the downstream of the evaporator, and a fresh air regulating valve is connected between the fresh air outlet and the cooling air channel in series.

Description

Multi-working-condition cooling system

Technical Field

The utility model relates to an air conditioning technology field especially relates to a multiplex condition cooling system.

Background

With the continuous rise of energy consumption of communication computer rooms, the demand of operators on energy-saving products is increased sharply, and in the aspect of computer room refrigeration, a fluorine pump air conditioner and a wet film fresh air system are mainly used at present. The fluorine pump air conditioner is characterized in that a fluorine pump cycle and a pressure pump cycle are added on the basis of the original DX (cold air system) air conditioner, when the outdoor temperature is lower than a certain value, the operation of a compressor is reduced or even cancelled, and partial or all natural cold cycles are realized to reduce the energy consumption of the air conditioner in operation; the wet film fresh air system is relatively simple in structural form, and fresh air is cooled and directly sent into a machine room in a wet film direct evaporative cooling mode.

The fluorine pump air conditioner can realize energy consumption reduction only under the condition of low outdoor temperature, and when the wet film fresh air system is high in outdoor temperature, the wet film fresh air system is not sufficient to provide cold energy required by a machine room only by direct evaporation cooling of the wet film; therefore, when the existing machine room refrigeration product is used, the influence of outdoor temperature is large, and the application range is narrow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multiplex condition cooling system for solve the narrower problem of computer lab refrigeration product range of application among the prior art.

In order to achieve the above object, the utility model provides a multiplex condition cooling system adopts following technical scheme:

this multiplex condition cooling system includes:

an air conditioner outdoor unit;

the indoor unit of the air conditioner comprises an indoor case and an evaporator, wherein an air inlet and an air outlet are formed in the indoor case, a cooling air channel is formed in the indoor case, one end of the cooling air channel is connected with the air inlet, the other end of the cooling air channel is connected with the air outlet, the evaporator is positioned in the cooling air channel, and an air inlet valve is arranged at the air inlet;

the evaporation refrigerator is cooled by air according to the evaporation cooling principle and comprises a fresh air inlet and a fresh air outlet, the fresh air outlet is communicated with a cooling air channel at the downstream of the evaporator, and a fresh air regulating valve is connected between the fresh air outlet and the cooling air channel in series.

When the multi-working-condition cooling system is used, the indoor unit of the air conditioner is arranged indoors, the outdoor unit of the air conditioner and the evaporative refrigerator are arranged outdoors, the evaporative refrigerator is defined to cool air through the cooling unit, and the indoor unit of the air conditioner needs to be provided with the exhaust fan when working normally, and the exhaust fan is used for exhausting air from the indoor unit box. In the multi-working-condition cooling system, equipment in an indoor unit of an air conditioner and equipment in an outdoor unit of the air conditioner form a compression refrigeration loop (the compression refrigeration loop is connected with equipment such as an evaporator, a compressor, a condenser, an electronic expansion valve, an oil-gas separator, a drying filter, a liquid storage device, a gas-liquid separator and the like in series), when an exhaust fan is started and an air inlet valve is opened, indoor air can form air flow at an air inlet and enter a cooling air channel, the air flow enters the cooling air channel and then exchanges heat with the evaporator for cooling, and then the air flow is discharged out of an indoor case from an air; when the air exhauster starts and opens the fresh air regulating valve, outdoor fresh air can get into the evaporation refrigerator from the fresh air inlet, if not open the cooling unit in the evaporation refrigerator, then the fresh air directly gets into cooling channel behind the evaporation refrigerator, discharge indoor machine case from the air outlet again, thereby to the indoor environment cooling, if open the cooling unit in the evaporation refrigerator, then the fresh air gets into behind the evaporation refrigerator from the fresh air inlet, the cooling unit is to the fresh air cooling, the fresh air gets into the cooling duct afterwards, discharge indoor machine case from the air outlet at last, thereby to the indoor environment cooling.

Defining four temperature values from low to high, wherein the four temperature values are respectively a first set temperature value, a second set temperature value, a third set temperature value and a fourth set temperature value, and the four temperature values can be set according to actual conditions and are not fixed and unchangeable values; when the multi-working-condition cooling system is used, the multi-working-condition cooling system has five different working modes, namely a mixed air working condition mode, a dry working condition mode, a wet working condition + DX working condition mode and a DX working condition mode, and the five different working modes are respectively started when the outdoor temperature is different.

1) The mixed air working condition mode comprises the following steps: when the outdoor temperature is lower than a first set temperature value, the air mixing working condition mode is started, in the mode, the fresh air regulating valve and the air inlet valve are opened, the cooling unit and the compression refrigeration loop in the evaporation refrigerator are closed, the exhaust fan is started, outdoor fresh air passes through the evaporation refrigerator and then enters the cooling air duct, indoor air forms air flow at the air inlet and enters the cooling air duct, and the indoor air flow and the outdoor fresh air are mixed in the cooling air duct to form mixed air and are discharged from the air outlet. Under this mode, avoided outdoor new trend because the temperature is too low and lead to the condition of getting into indoor back dewfall.

2) Dry mode: when the outdoor temperature is higher than the first set temperature value and lower than the second set temperature value, the dry working condition mode is started, in the dry working condition mode, the fresh air regulating valve is opened, the air inlet valve, the cooling unit and the compression refrigeration loop in the evaporative refrigerator are closed, the exhaust fan is started, the outdoor fresh air enters the cooling air channel after passing through the evaporative refrigerator and is discharged from the air outlet, and therefore the indoor environment is cooled. In the mode, the outdoor temperature is lower than the indoor temperature, and the indoor environment can be cooled by outdoor fresh air directly.

3) Wet condition mode: when the outdoor temperature is higher than the second set temperature value and lower than the third set temperature value, the wet working condition mode is started, in the wet working condition mode, the fresh air regulating valve and the cooling unit in the evaporative refrigerator are opened, the air inlet valve and the compression refrigeration loop are closed, the exhaust fan is started, outdoor fresh air enters the evaporative refrigerator and is cooled by the cooling unit, then the fresh air enters the cooling air duct and is discharged from the air outlet, and therefore the indoor environment is cooled. In this mode, the outdoor temperature is generally higher than the indoor temperature or almost equal to the indoor temperature, and the outdoor fresh air is firstly cooled and then sent into the room to cool the indoor environment.

4) Wet + DX mode: when the outdoor temperature is higher than a third set temperature value and lower than a fourth set temperature value, the wet working condition + DX working condition mode is started only by the cooling unit in the evaporative refrigerator to cool the fresh air, in the mode, a fresh air regulating valve, a cooling unit, an air inlet valve and a compression refrigeration loop are opened, an exhaust fan is started, the outdoor fresh air enters the evaporative refrigerator and is cooled by the cooling unit, and then the fresh air enters a cooling air duct and is discharged from an air outlet, so that the indoor environment is cooled; meanwhile, indoor air forms air flow at an air inlet of the indoor case and enters the cooling air duct, the air flow is cooled when passing through the evaporator, and the cooled air flow is discharged from the air outlet, so that the indoor environment is cooled.

5) DX operating mode: when the outdoor temperature is higher than the fourth set temperature value, the cooling effect of the evaporative refrigerator is not obvious, and then a DX working mode is started, in the DX working mode, an air inlet valve and a compression refrigeration loop are opened, a fresh air regulating valve and a cooling unit are closed, an exhaust fan is started, indoor air forms air flow at an air inlet of an indoor case and enters a cooling air channel, the air flow is cooled when passing through an evaporator, and the cooled air flow is discharged from an air outlet, so that the indoor environment is cooled.

The utility model provides a multiplex condition cooling system's beneficial effect is: by using the multi-working-condition cooling system, different modes can be started according to different outdoor temperatures, when the outdoor temperature is from low temperature to high temperature, the multi-working-condition cooling system can realize the cooling of the indoor environment, and the multi-working-condition cooling system has wider application range and stronger adaptability.

Furthermore, the evaporative refrigerator also comprises an evaporative case, a wet film, a sprayer and a circulating water supply system, wherein the wet film and the sprayer are installed in the evaporative case, the sprayer is arranged above the wet film to spray water to the wet film, the circulating water supply system is used for supplying water to the sprayer and collecting water falling after passing through the wet film, and a fresh air inlet and a fresh air outlet are arranged on the evaporative case and are positioned on two opposite sides of the wet film. The evaporation refrigerator has a simple structure and is convenient to use.

Furthermore, the circulating water supply system comprises a water collecting tank, a water supply pipe and a water pump, wherein the water collecting tank is arranged in the evaporation case and is positioned below the wet film, one end of the water supply pipe is connected with the water collecting tank, the other end of the water supply pipe is connected with the sprayer, and the water pump is connected in the water supply pipe in series.

Furthermore, the indoor machine case is also provided with an air return inlet which is communicated with the cooling air duct, the communication position of the air return inlet and the cooling air duct is positioned at the downstream of the evaporator in the cooling air duct, and the air return inlet is provided with an air return valve. Because the evaporator is arranged in the cooling air duct, the air flow formed at the air inlet needs to be contacted with the evaporator after entering the cooling air duct, the evaporator can generate resistance to the air flow, indoor air needs to enter the cooling air duct under the air mixing working condition mode, if the air enters from the air inlet, even if the compression refrigeration loop is not started, the air flow can be blocked by the evaporator, so that the air inlet is not smooth, and the air return opening is arranged.

Furthermore, the fresh air outlet is communicated with a cooling air channel at the downstream of the evaporator through a fresh air pipeline, and the radial size of the fresh air inlet is larger than that of the fresh air pipeline. The fresh air inlet has a large size, so that the vibration noise generated when fresh air enters the evaporation refrigerator can be reduced, the air speed entering the evaporation refrigerator can be reduced, and dust absorption caused by overlarge air speed is prevented.

Furthermore, a filter element is arranged at the fresh air inlet. The filtering piece can be used for filtering sundries in fresh air entering the evaporative refrigerator.

Furthermore, the evaporator is a V-shaped evaporator, and the opening of the V-shaped evaporator faces the air inlet. The arrangement can increase the contact area of the evaporator and the air flow entering the cooling air duct from the air inlet, thereby improving the cooling effect of the compression refrigeration loop.

Furthermore, the multi-working-condition cooling system further comprises a fire damper, and the fire damper is connected between the fresh air outlet and the cooling air duct in series. Set up like this, can in time cut off the connecting tube between new trend export and the cooling air duct when the conflagration breaing out, prevent that the intensity of a fire from stretching.

Furthermore, the multi-working-condition cooling system further comprises an air distribution box, an air distribution cavity is arranged in the air distribution box, or the air distribution box and the ground form the air distribution cavity in a surrounding mode, a cold air inlet is formed in the air distribution box and communicated with an air outlet in the indoor machine case, an upper side plate of the air distribution box is used for supporting machine room equipment, and air distribution holes are formed in the upper side plate of the air distribution box. Under this kind of condition, cloth bellows arranges on indoor subaerial, air outlet on the indoor machine case and the cold wind entry intercommunication on the cloth bellows, the wind current of following the air outlet exhaust gets into the cloth wind intracavity and gets into indoorly from the cloth wind hole on the cloth bellows, thereby realize the cooling to indoor environment, the cover area of reasonable setting cloth bellows and the distribution condition of cloth wind hole, if set up the ground that the cloth bellows paved the computer lab and constitute built on stilts floor, the cloth wind hole evenly spreads all over the side plate of going up of whole cloth bellows, then indoor everywhere temperature can be balanced fast, make the temperature environment of computer lab more excellent.

Furthermore, the multi-working-condition cooling system further comprises an exhaust fan, the exhaust fan is used for exhausting air from the indoor case, and the exhaust fan is arranged in the air distribution cavity. Due to the arrangement, an exhaust fan does not need to be additionally arranged when the multi-working-condition cooling system is used, and the adaptability and the convenience of the multi-working-condition cooling system are improved.

Drawings

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

Fig. 1 is a schematic structural diagram (only a part of the structure is shown) of an embodiment of the multi-condition cooling system provided by the present invention.

In the drawings: 1-indoor cabinet, 2-compressor, 3-evaporator, 4-air inlet, 5-air return inlet, 6-evaporation cabinet, 7-sprayer, 8-wet film, 9-water collecting tank, 10-water supply pipe, 11-fresh air pipeline, 12-electric multi-blade air quantity regulating valve, 13-fire-resisting valve, 14-air distributing box, 15-air distributing cavity, 16-air exhauster, 17-filter screen and 18-insect-proof net.

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 work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "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 merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model provides a multiplex condition cooling system's embodiment:

as shown in fig. 1, the multi-operating mode cooling system includes an indoor unit of an air conditioner, an outdoor unit of an air conditioner (not shown), an evaporative refrigerator, an air distribution box 14 and an exhaust fan 16, wherein the air distribution box 14 and an indoor ground form an air distribution chamber 15, a plurality of air distribution holes and a cold air inlet are formed on an upper side plate of the air distribution box 14, the exhaust fan 16 is installed in the air distribution chamber 15 and is arranged at the cold air inlet, and the air distribution holes on the air distribution box 14 are distributed over the upper side plate of the whole air distribution box 14. In this embodiment, the air distribution box 14 is laid on the indoor floor to form an indoor raised floor, and various indoor devices are placed on the upper side plate of the air distribution box 14.

As shown in fig. 1, the indoor unit of the air conditioner includes an indoor unit case 1, the indoor unit case 1 is provided with an air inlet 4, an air return opening 5, an air outlet and a connector, the air inlet 4 is arranged at the top of the indoor unit case 1, the air return opening 5 and the connector are arranged on the side wall of the indoor unit case 1, the air outlet is arranged at the bottom of the indoor unit case 1, an air inlet valve (not shown in the figure) is installed at the air inlet 4 and used for opening and closing the air inlet 4, and an air return valve (not shown in the figure) is installed at the air return opening 5 and used; when the indoor machine case 1 is used, the indoor machine case 1 is placed on the air distribution box 14, and the air outlet of the indoor machine case 1 is aligned with the cold air inlet on the air distribution box 14, so that the air flow in the indoor machine case 1 can be sucked into the air distribution cavity 15 by the exhaust fan 16 in the air distribution cavity 15; a cooling air duct is arranged in the indoor case 1, one end of the cooling air duct is connected with the air inlet 4, and the other end of the cooling air duct is connected with the air outlet; a compressor 2 and an evaporator 3 are installed in the indoor case 1, the evaporator 3 is a V-shaped evaporator, the evaporator 3 is arranged in the cooling air duct, and the opening of the evaporator 3 faces the air inlet 4; the air return opening 5 is communicated with the cooling air duct, and the communication position of the air return opening 5 and the cooling air duct is positioned at the downstream of the evaporator 3 in the cooling air duct; the connecting port is communicated with the cooling air duct, and the communication position of the connecting port and the cooling air duct is positioned at the downstream of the communication position of the air return port 5 and the cooling air duct in the cooling air duct.

When the air conditioner is used, the air conditioner outdoor unit is installed outdoors and comprises an outdoor case and a condenser installed in the outdoor case, the condenser, the evaporator 3 and the compressor 2 are connected in series to form a compression refrigeration loop, and an electronic expansion valve (not shown in the figure), an oil-gas separator (not shown in the figure), a drying filter (not shown in the figure), a liquid accumulator (not shown in the figure) and a gas-liquid separator (not shown in the figure) are also connected in series in the compression refrigeration loop, and the compression refrigeration loop is a refrigeration loop common in the prior art and is not described in detail here.

As shown in fig. 1, the evaporation refrigerator is installed outdoors when in use, the evaporation refrigerator comprises an evaporation case 6, a sprayer 7, a wet film 8 and a circulating water supply system, the sprayer 7 is installed at the top of the evaporation case 6, the wet film 8 is installed in the evaporation case 6 and below the sprayer 7, the sprayer 7 can spray water to the wet film 8, the circulating water supply system comprises a water collecting tank 9, a water supply pipe 10 and a water pump (not shown in the figure), the water collecting tank 9 is arranged at the bottom of the evaporation case 6 and is positioned right below the wet film 8, water sprayed out of the sprayer 7 can fall into the water collecting tank 9 after passing through the wet film 8, one end of the water supply pipe 10 is connected with the water collecting tank 9, the other end of the water supply pipe is connected with the sprayer 7, the water pump is connected in series with the water supply pipe 10, and the water in the water collecting tank 9.

As shown in fig. 1, the evaporator case 6 is provided with a fresh air inlet and a fresh air outlet, the fresh air inlet is arranged on the side wall of the evaporator case 6, which is back to the wall, and the fresh air outlet is arranged on the side wall of the evaporator case 6, which is facing the wall; a filter screen 17 and an insect-proof net 18 are installed at the fresh air inlet, the insect-proof net 18 is installed on the outer side of the filter screen 17, the insect-proof net 18 is used for preventing insects from entering the evaporation case 6, and the filter screen 17 is used for filtering dust in fresh air entering the evaporation case 6. The filter screen 17 and the insect-proof net 18 together form a filter element which is arranged at the fresh air inlet.

As shown in fig. 1, the multi-operating mode cooling system further includes a fresh air duct 11, an electric multi-vane air volume adjusting valve 12 and a fire damper 13, the fresh air duct 11 penetrates through the wall, one end of the fresh air duct is connected to a fresh air outlet of the evaporation cabinet 6, the other end of the fresh air duct extends to the indoor cabinet 1 and is connected to a connector on the indoor cabinet 1, and the fresh air duct 11 is communicated with the cooling air duct through the connector; in the embodiment, the fresh air inlet is circular, the fresh air pipeline 11 is of a circular pipe structure, and the diameter of the fresh air inlet is larger than the inner diameter of the fresh air pipeline 11; the electric multi-blade air volume adjusting valve 12 and the fire damper 13 are connected in series in the fresh air pipeline 11, the fire damper 13 is in a normally open state, and the electric multi-blade air volume adjusting valve 12 is used for realizing the on-off of the fresh air pipeline 11. The electric multi-blade air volume adjusting valve 12 forms a fresh air adjusting valve in the multi-working-condition cooling system.

The cooling system is also provided with a controller, the compression refrigeration loop, the circulating water supply system, the electric multi-blade air volume adjusting valve 12, the exhaust fan 16, the air inlet valve (the air inlet valve in the embodiment is an electric valve), and the air return valve (the air return valve in the embodiment is an electric valve) are in signal connection with the controller, and the controller can control the start, stop or opening and closing of the compression refrigeration loop, the circulating water supply system, the electric multi-blade air volume adjusting valve 12, the exhaust fan 16, the air inlet valve and the air return valve.

When the multi-working-condition cooling system is used, when the exhaust fan 16 is started and the air inlet valve is opened, indoor air can form air flow at the air inlet 4 and enters the cooling air channel, the air flow enters the cooling air channel and then exchanges heat with the evaporator 3 for cooling, then is discharged out of the indoor case 1 from the air outlet and enters the air distribution cavity 15, and finally enters the indoor from the air distribution holes in the air distribution case 14, so that the indoor environment is cooled; when the exhaust fan 16 is started and the electric multi-blade air volume adjusting valve 12 is opened, outdoor fresh air can enter the evaporation case 6 from a fresh air inlet, if the circulating water supply system is not started, the fresh air directly passes through the evaporation case 6 and the fresh air pipeline 11 and then enters the cooling air duct, then is discharged from the air outlet of the indoor case 1 and enters the air distribution chamber 15, and finally enters the room from the air distribution holes in the air distribution case 14 so as to cool the indoor environment, if the circulating water supply system is started, the sprayer 7 sprays water to the wet film 8, the temperature of the fresh air enters the evaporation case 6 from the fresh air inlet and then decreases when passing through the wet film 8, then passes through the fresh air pipeline 11 and then enters the cooling air duct, then is discharged from the air outlet of the indoor case 1 and then enters the air distribution chamber 15, and finally enters the room from the air distribution holes in the air distribution case 14 so as to cool the indoor environment; when the exhaust fan 16 is started and the return valve is opened, indoor air can form air flow at the return air inlet 5 and enter the cooling air channel, the air flow enters the cooling air channel and then enters the air distribution cavity 15 after being discharged out of the indoor case 1 from the air outlet, and finally enters the indoor from the air distribution holes in the air distribution box 14, so that the indoor environment is cooled.

Defining four temperature values from low to high, wherein the four temperature values are respectively a first set temperature value, a second set temperature value, a third set temperature value and a fourth set temperature value, and the four temperature values can be set according to actual conditions and are not fixed and unchangeable values; when the cooling system is used, the cooling system has five different working modes, namely a mixed air working condition mode, a dry working condition mode, a wet working condition + DX working condition mode and a DX working condition mode, and the five different working modes are respectively started at different outdoor temperatures.

1) The mixed air working condition mode comprises the following steps: when the outdoor temperature is lower than a first set temperature value, the air mixing working condition mode is started, in the mode, the electric multi-blade air volume adjusting valve 12 and the air return valve are opened, the air inlet valve, the circulating water supply system and the compression refrigeration loop are closed, the exhaust fan 16 is started, outdoor fresh air enters the cooling air channel after passing through the evaporation case 6 and the fresh air pipeline 11, indoor air forms air flow at the air return opening 5 and enters the cooling air channel, indoor air flow and outdoor fresh air are mixed in the cooling air channel to form mixed air, the mixed air is discharged out of the indoor case 1 from the air outlet and enters the air distribution cavity 15, and finally enters the indoor from the air distribution holes in the air distribution box 14, so that the indoor environment is cooled. Under this mode, avoided outdoor new trend because the temperature is too low and lead to the condition of getting into indoor back dewfall.

2) Dry mode: when the outdoor temperature is higher than the first set temperature value and lower than the second set temperature value, the dry working mode is started, in this mode, the electric multi-blade air volume adjusting valve 12 is opened, the air inlet valve, the air return valve, the circulating water supply system and the compression refrigeration loop are closed, the exhaust fan 16 is started, outdoor fresh air enters the cooling air duct after passing through the evaporation case 6 and the fresh air duct 11, then enters the air distribution chamber 15 after being discharged out of the indoor case 1 from the air outlet, and finally enters the indoor from the air distribution holes in the air distribution case 14, so that the indoor environment is cooled. In the mode, the outdoor temperature is lower than the indoor temperature, and the indoor environment can be cooled by outdoor fresh air directly.

3) Wet condition mode: when the outdoor temperature is higher than the second set temperature value and lower than the third set temperature value, the wet working condition mode is started, in this mode, the electric multi-blade air volume adjusting valve 12 and the circulating water supply system are opened, the air inlet valve, the air return valve and the compression refrigeration loop are closed, the exhaust fan 16 is started, the circulating water supply system supplies water to the sprayer 7, the sprayer 7 sprays water to the wet film 8, outdoor fresh air enters the evaporator case 6 from a fresh air inlet on the evaporator case 6, is cooled when passing through the wet film 8, enters the cooling air duct after passing through a fresh air outlet and the fresh air duct 11, enters the air distribution chamber 15 after being discharged out of the indoor case 1 from the air outlet, and finally enters the room from the air distribution holes on the air distribution case 14, so that the indoor environment is cooled. In this mode, the outdoor temperature is generally higher than the indoor temperature or almost equal to the indoor temperature, and the outdoor fresh air is firstly cooled and then sent into the room to cool the indoor environment.

4) Wet + DX mode: when the outdoor temperature is higher than a third set temperature value and lower than a fourth set temperature value, the wet film 8 is only used for direct evaporative cooling and cooling, and the cold energy required by the indoor is not enough provided, a wet working condition + DX working condition mode is started, in the mode, the electric multi-blade air volume adjusting valve 12, the circulating water supply system, the air inlet valve and the compression refrigeration loop are opened, the air return valve is closed, the exhaust fan 16 is started, the circulating water supply system supplies water to the sprayer 7, the sprayer 7 sprays water to the wet film 8, outdoor fresh air enters the evaporator case 6 from a fresh air inlet on the evaporator case 6, the temperature is reduced when the outdoor fresh air passes through the wet film 8, then enters the cooling air channel after passing through a fresh air outlet and a fresh air pipeline 11, then enters the air distribution cavity 15 after being discharged out of the indoor case 1 from an air outlet, and finally enters the indoor from air distribution holes on the air; meanwhile, indoor air forms an air flow at the air inlet 4 of the indoor case 1 to enter the cooling air duct, the air flow is cooled when passing through the evaporator 3, the cooled air flow is discharged out of the indoor case 1 from the air outlet and then enters the air distribution cavity 15, and finally enters the indoor from the air distribution holes in the air distribution box 14, so that the indoor environment is cooled.

5) DX operating mode: when the outdoor temperature is higher than the fourth set temperature value, the direct evaporative cooling effect of the wet film 8 is not obvious, and then the DX working mode is started, in the DX working mode, the air inlet valve and the compression refrigeration loop are opened, the electric multi-blade air volume adjusting valve 12, the air return valve and the circulating water supply system are closed, the exhaust fan 16 is started, indoor air forms air flow at the air inlet 4 of the indoor case 1 and enters the cooling air channel, the air flow is cooled when passing through the evaporator 3, the cooled air flow is discharged out of the indoor case 1 from the air outlet and enters the air distribution cavity 15, and finally enters the indoor from the air distribution holes on the air distribution box 14, so that the indoor environment is cooled.

When the multi-working-condition cooling system is used, a proper working mode can be selected according to the actual outdoor temperature, so that the energy consumption is reduced as far as possible on the basis of ensuring the indoor cooling.

In the above embodiment, the evaporation refrigerator cools the fresh air through the wet film, the sprayer and the circulating water supply system. In other embodiments, the evaporative cooler may have other structures, such as: the evaporative refrigerator comprises an evaporative case, wherein an air cavity is arranged at the upper part of the evaporative case, an air outlet is arranged at the upper side of the air cavity, an exhaust fan is arranged in the air cavity, a plurality of air pipes extending up and down are also arranged in the evaporative case, the upper ends of the air pipes extend into the air cavity, and the lower ends of the air pipes extend to the outer side of the evaporative case; the evaporator case is also internally provided with a sprayer, a water tank, a water supply pipe and a water pump, the sprayer is arranged in the air cavity, one end of the water supply pipe is connected with the water tank, the other end of the water supply pipe is connected with the sprayer, the water pump is connected in the water supply pipe in series, the water pump can convey water in the water tank into the sprayer when working, the sprayer is respectively provided with at least one nozzle corresponding to the upper port of each air pipe, so that water can be sprayed into each air pipe, when the exhaust fan works, the air flow in the air pipes can be contacted with the water sprayed out by the sprayer, so that cooling is realized, and the cooling of the air flow in the air pipes is also realized; the evaporator case is also provided with a fresh air inlet and a fresh air outlet, the fresh air inlet is arranged on the side wall of the evaporator case, which is back to the wall, the fresh air outlet is arranged on the side wall of the evaporator case, which faces the wall, the fresh air enters the evaporator case from the fresh air inlet and then passes through each air pipe and exchanges heat with the air flow in the air pipe, so that cooling is realized, and the cooled fresh air is discharged out of the evaporator case from the fresh air outlet and finally enters a cooling channel.

In the above embodiment, the indoor machine case is provided with the air return opening, and when the multi-condition cooling system is in the air mixing condition mode, the air return opening supplies indoor air to enter the cooling air duct to be mixed with fresh air. In other embodiments, the indoor chassis may not be provided with an air return opening, and when the air mixing working condition mode is started, the air inlet valve is opened, so that indoor air enters the cooling air duct through the air inlet, and the indoor chassis can be used as well.

In the above embodiment, the fresh air inlet is circular, the fresh air pipeline is of a circular pipe structure, and the diameter of the fresh air inlet is larger than the inner diameter of the fresh air pipeline. In other embodiments, the diameter of the fresh air inlet can be equal to or smaller than the inner diameter of the fresh air pipeline, and the fresh air inlet can also be used; of course, the fresh air inlet may have other shapes such as square, oval, triangular, etc., and the fresh air duct may have other shapes such as square tube, triangular prism tube, etc., which may be used.

In the above embodiment, the fresh air inlet is provided with the insect-proof net and the filter screen. In other embodiments, only the filter screen or only the insect-proof net may be installed, or the filter screen and the insect-proof net may not be provided, and the same may be used.

In the above embodiment, the evaporator is a V-type evaporator. In other embodiments, the evaporator may have other shapes, such as square, and may be used as well.

In the above embodiment, the circulating water supply system includes the water collecting tank, the water supply pipe and the water pump, the water collecting tank is disposed in the evaporation case, the water collecting tank is used for collecting water falling from the wet film, the water supply pipe is connected with the water collecting tank and the sprayer, the water pump is connected in series in the water supply pipe to provide power for the circulating water supply system, and the circulating water supply system can send water in the water collecting tank into the sprayer so that the sprayer sprays water to the wet film. In other embodiments, the circulating water supply system may also be in other structural forms, such as may include a water storage tank, a water supply pipe, a water return pipe, a water supply pump and a water return pump, one end of the water return pipe is connected to the water collection tank, the other end is connected to the water storage tank, one end of the water supply pipe is connected to the shower, the other end is connected to the water storage tank, the water supply pump is connected in series to the water supply pipe, the water return pump is connected in series to the water return pipe, the water in the water collection tank can be taken into the water storage tank when the water return pump works, the water in the water storage tank can be sent into the shower when the water supply pump works, and the water that falls after passing through; in addition, a water depth sensing device can be further installed in the water collecting tank, when the water depth reaches a set depth, the water return pump works, and the water return pump does not work in other time, so that the energy consumption can be reduced.

In the above embodiment, the fire damper is connected in series in the fresh air pipeline. In other embodiments, the fire damper may not be connected in series in the fresh air duct, and the same can be used.

In the above embodiment, this multiplex condition cooling system includes cloth bellows, and cloth bellows encloses into cloth wind chamber with indoor ground, is equipped with the cloth wind hole on the last curb plate in cloth wind chamber, and the air current among the cooling tube gets into the cloth wind intracavity earlier after, gets into indoorly from the cloth wind hole again to the realization is to the cooling of indoor environment. In other embodiments, the air distribution cavity can be independently surrounded by the air distribution box and can be used as well; certainly, the air distribution box is not needed, and air flow is discharged from the air outlet and then directly enters the room, so that the indoor environment is cooled, and the air distribution box can be used.

In the above embodiment, the multi-condition cooling system includes the exhaust fan, and the exhaust fan is arranged in the air distribution cavity. In other embodiments, the exhaust fan may also be disposed outside the air distribution chamber, for example, an air conveying pipeline is disposed between the air outlet of the indoor case and the cold air inlet of the air distribution case, and the exhaust fan may be connected in series in the air conveying pipeline and may be used as well; of course, the exhaust fan can also be directly arranged on the indoor case, can be arranged in the indoor case, and can also be arranged outside the indoor case as long as the exhaust fan can exhaust air outwards from the cooling air duct; the multi-working-condition cooling system can be used without an exhaust fan, and when the multi-working-condition cooling system is actually used, the exhaust fan is additionally arranged, and the additionally arranged exhaust fan is matched with the multi-working-condition cooling system for use.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A multi-condition cooling system, comprising:

an air conditioner outdoor unit;

the indoor unit of the air conditioner comprises an indoor machine case and an evaporator, wherein an air inlet and an air outlet are formed in the indoor machine case, a cooling air channel is formed in the indoor machine case, one end of the cooling air channel is connected with the air inlet, the other end of the cooling air channel is connected with the air outlet, the evaporator is located in the cooling air channel, and an air inlet valve is arranged at the air inlet;

the evaporation refrigerator is cooled by an air cooling principle and comprises a fresh air inlet and a fresh air outlet, the fresh air outlet is communicated with a cooling air channel at the downstream of the evaporator, and a fresh air regulating valve is connected between the fresh air outlet and the cooling air channel in series.

2. The multi-operating-condition cooling system according to claim 1, wherein the evaporative refrigerator further comprises an evaporator case, a wet film, a sprayer and a circulating water supply system, the wet film and the sprayer are installed in the evaporator case, the sprayer is arranged above the wet film to spray water to the wet film, the circulating water supply system is used for supplying water to the sprayer and collecting water falling after passing through the wet film, and the fresh air inlet and the fresh air outlet are arranged on the evaporator case and located on two opposite sides of the wet film.

3. The multi-operating-condition cooling system as claimed in claim 2, wherein the circulating water supply system comprises a water collecting tank, a water supply pipe and a water pump, the water collecting tank is arranged in the evaporator case and is located below the wet film, one end of the water supply pipe is connected with the water collecting tank, the other end of the water supply pipe is connected with the sprayer, and the water pump is connected in series in the water supply pipe.

4. The multi-operating-condition cooling system according to claim 1, 2 or 3, wherein a return air inlet is further arranged on the indoor machine case, the return air inlet is communicated with the cooling air duct, the communication position of the return air inlet and the cooling air duct is located at the downstream of the evaporator in the cooling air duct, and a return air valve is arranged at the return air inlet.

5. A multi-condition cooling system as claimed in claim 1, 2 or 3 wherein the fresh air outlet is in communication with a cooling air duct downstream of the evaporator via a fresh air duct, the fresh air inlet having a radial dimension greater than the radial dimension of the fresh air duct.

6. A multi-condition cooling system as claimed in claim 1, 2 or 3 wherein a filter element is mounted at the fresh air inlet.

7. The multi-condition cooling system as claimed in claim 1, 2 or 3, wherein the evaporator is a V-shaped evaporator, and the opening of the V-shaped evaporator faces the air inlet.

8. A multi-condition cooling system according to claim 1, 2 or 3 further comprising a fire damper connected in series between the fresh air outlet and the cooling air duct.

9. The multi-operating-condition cooling system according to claim 1, 2 or 3, further comprising an air distribution box, wherein an air distribution cavity is arranged in the air distribution box, or the air distribution box and the ground form an air distribution cavity, the air distribution box is provided with a cold air inlet, the cold air inlet is communicated with the air outlet on the indoor machine case, an upper side plate of the air distribution box is used for supporting machine room equipment, and an upper side plate of the air distribution box is provided with air distribution holes.

10. The multi-condition cooling system of claim 9, further comprising an exhaust fan for extracting air from the indoor unit case, wherein the exhaust fan is disposed in the air distribution chamber.

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