CN217785325U

CN217785325U - Fresh air conditioner

Info

Publication number: CN217785325U
Application number: CN202220908326.4U
Authority: CN
Inventors: 李君飞
Original assignee: Qingdao Johnson Automatic Control Air Conditioning Co ltd
Current assignee: Qingdao Johnson Automatic Control Air Conditioning Co ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-11-11
Anticipated expiration: 2032-04-20

Abstract

The utility model discloses a fresh air conditioner, which comprises an outdoor unit and at least one indoor fresh air unit connected with the outdoor unit; the indoor fresh air unit comprises an air supply module, an air exhaust module and a condensate water module; the air supply module comprises a first box body, a first heat exchanger and a first fan; the first box body comprises a first air inlet and a first air outlet; the first heat exchanger and the first fan are arranged in the first box body and used for sending outdoor fresh air into a room after temperature regulation is carried out on the outdoor fresh air through the first heat exchanger; the air exhaust module comprises a second box body, a second heat exchanger and a second fan; the second box body comprises a second air inlet and a second air outlet; the second heat exchanger and the second fan are arranged in the second box body and used for discharging the indoor turbid air to the outside after the heat of the second heat exchanger is recovered; the condensed water module is arranged in the first box body and can lead the condensed water in the first box body to the upper part of the second heat exchanger. The utility model discloses retrieve the heat of indoor exhaust air, improve new trend air conditioner efficiency, the energy can be saved.

Description

Fresh air conditioner

Technical Field

The utility model relates to an air conditioning technology field, concretely relates to fresh air conditioner.

Background

At present, aiming at offices, meeting halls, movie theaters, hospitals and other places, because users have higher and higher requirements on the quality of air, fresh air conditioning products are usually installed, and the introduction of fresh air is facilitated; in order to ensure the negative pressure requirement in the room, the air in the room is simultaneously exhausted to the outside; however, the air exhausted at this time has a certain amount of heat or cold, which causes energy waste to a certain extent.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems pointed out in the background technology, the heat recovery system is adopted to recover the heat or cold of the discharged air, so that the energy efficiency of the air conditioning system is improved and the energy conservation is improved.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

in some embodiments of the present application, a fresh air conditioner is provided, which includes an outdoor unit and at least one indoor fresh air unit connected to the outdoor unit;

the indoor fresh air unit comprises an air supply module and an air exhaust module; the air supply module comprises a first box body, a first heat exchanger and a first fan; the first box body is a box body provided with a first air inlet and a first air outlet; the first heat exchanger and the first fan are arranged in the first box body and used for sending outdoor fresh air into a room after temperature regulation is carried out on the outdoor fresh air through the first heat exchanger; the air exhaust module comprises a second box body, a second heat exchanger and a second fan; the second box body is a box body provided with a second air inlet and a second air outlet; the second heat exchanger and the second fan are arranged in the second box body and used for discharging indoor foul air to the outside after heat of the indoor foul air is recovered by the second heat exchanger;

the indoor fresh air unit further comprises a condensed water module which is arranged in the first box body and can lead condensed water in the first box body to the upper part of the second heat exchanger.

In some embodiments of the present application, the condensed water module includes a water pan, a drain pump, a condensed water pipe;

the water receiving tray is arranged right below the first heat exchanger and used for receiving condensed water generated by the first heat exchanger;

the drainage pump is connected with one end of the condensate pipe, is fixedly arranged at the bottom of the water pan and is used for draining condensate water in the water pan;

the other end of the condensate pipe is arranged above the second heat exchanger; when the drainage pump carries out drainage operation, the drained condensed water is drained to the upper part of the second heat exchanger and drained.

In some embodiments of the present application, the indoor fresh air unit further comprises an indoor controller, at least one water level sensor; the water level sensor is connected with the indoor controller, is arranged in the water receiving tray, detects the water level in the water receiving tray to generate a water level signal, and transmits the water level signal to the indoor controller;

the drainage pump is connected with the indoor controller, and the indoor controller controls the starting operation or the stopping operation; the indoor controller is configured with a preset water level, judges whether the water level signal reaches the preset water level, and controls the drainage pump to operate and drain water when the water level signal reaches the preset water level.

In some embodiments of the present application, the water level sensors are float type sensors, the number of the water level sensors is two, the first water level sensor and the second water level sensor are respectively connected to the indoor controller, and the first water level sensor and the second water level sensor are respectively used for detecting a high water level and a low water level, generating a high water level signal and a low water level signal, and transmitting the high water level signal and the low water level signal to the indoor controller;

the indoor controller is also provided with a water discharge stopping water level which is smaller than the preset water level; when the high water level signal reaches the preset water level, controlling the drainage pump to start; and when the low water level signal reaches the drainage stopping water level, controlling the drainage pump to stop running.

In some embodiments of the present application, the first case and the second case are integrally provided as a case;

the box body is internally provided with a partition, and the space in the box body is divided into a first cavity and a second cavity which are mutually isolated; the first heat exchanger and the first fan are arranged in the first cavity; the second heat exchanger and the second fan are arranged in the second cavity;

the first air inlet and the first air outlet are respectively arranged on the box body of the first cavity; the second air inlet and the second air outlet are respectively arranged on the box body of the second cavity.

In some embodiments of the present application, the outdoor unit includes a compressor, an outdoor heat exchanger;

the outdoor heat exchanger, the first heat exchanger and the second heat exchanger are respectively connected with the compressor; the first heat exchanger and the second heat exchanger are respectively used for refrigerant condensation heat release or evaporation heat absorption; and the outdoor heat exchanger and the second heat exchanger are used for absorbing heat in the evaporation or condensation of the refrigerant.

In some embodiments of the present application, the refrigerant system further includes a first refrigerant main pipe, a second refrigerant main pipe, a third refrigerant main pipe, a first tee joint, a second tee joint, a third tee joint, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve 42, a first throttling device, and a second throttling device;

one end of the first refrigerant main pipe is connected with an exhaust port of the compressor, and the other end of the first refrigerant main pipe is connected with one interface of the first tee joint; the other two interfaces of the first tee joint are respectively connected with one end of the first heat exchanger and one end of the second heat exchanger through the first electromagnetic valve and the third electromagnetic valve; one end of the outdoor heat exchanger is connected with an air outlet of the compressor;

one end of the second refrigerant main pipe is connected with the return air port of the compressor, and the other end of the second refrigerant main pipe is connected with one interface of the second tee joint; the other two interfaces of the second tee joint are respectively connected with one end of the first heat exchanger and one end of the second heat exchanger through the second electromagnetic valve and a fourth electromagnetic valve 42;

one end of the third refrigerant main pipe is connected with the other end of the outdoor heat exchanger, and the other end of the third refrigerant main pipe is connected with one interface of the third tee joint; and the other two interfaces of the third tee joint are respectively connected with the other end of the first heat exchanger and the other end of the second heat exchanger through the first throttling device and the second throttling device.

In some embodiments, the outdoor unit further comprises a control valve including a common end, an inlet end, and an outlet end, wherein the common end is communicated with the inlet end or the outlet end; the exhaust port of the compressor is respectively connected with one end of the first refrigerant main pipe and the inlet end; the public end is connected with one end of the outdoor heat exchanger; the outlet end is connected with a return air port of the compressor;

when the indoor fresh air needs to be cooled, the common end of the control valve is communicated with the inlet end; a part of gas refrigerant discharged by the compressor enters the second heat exchanger through the first refrigerant main pipe, the first tee joint 5 and the third electromagnetic valve to be condensed and released, and a part of gas refrigerant enters the outdoor heat exchanger through the control valve to be condensed and released, and then jointly reaches the first heat exchanger to be evaporated and absorb heat;

when the indoor fresh air needs to be heated, the common end of the control valve is communicated with the outlet end; the gas refrigerant discharged by the compressor enters the first heat exchanger for condensation and heat release through the first refrigerant main pipe, the first tee joint 5 and the first electromagnetic valve in sequence, then a part of refrigerant is evaporated and absorbed by the second heat exchanger through the third tee joint and the second throttling device, and a part of refrigerant is evaporated and absorbed by the outdoor heat exchanger through the third tee joint and the third refrigerant main pipe.

In some embodiments of the present application, the system further comprises a fifth solenoid valve; the control valve is a four-way valve and comprises a first port, a second port, a third port and a fourth port; the first port is connected with a gas outlet of the compressor; the second port is connected with one end of the outdoor heat exchanger; the third port is connected with a return air port of the compressor; the fourth port is connected with the third port through the fifth electromagnetic valve;

when the indoor fresh air needs to be cooled, a first port of the four-way valve is communicated with a second port; the fifth electromagnetic valve is cut off;

when the temperature of the fresh air in the room needs to be raised, a first port and a fourth port of the four-way valve are communicated; and the fifth electromagnetic valve is cut off.

In some embodiments of the present disclosure, the outdoor unit includes a first compressor, a second compressor, a first four-way valve, a second four-way valve, a sixth solenoid valve, and a seventh solenoid valve;

first ports of the first four-way valve and the second four-way valve are connected with the exhaust port; a second port of the first four-way valve is connected with one end of the first refrigerant main pipe; a second port of the second four-way valve is connected with one end of the outdoor heat exchanger; third ports of the first four-way valve and the second four-way valve are connected with a return air port of the compressor; the fourth ports of the first four-way valve and the second four-way valve are respectively connected with the third port of the first four-way valve and the third port of the second four-way valve through the sixth solenoid valve and the seventh solenoid valve;

when the indoor fresh air needs to be cooled, the first ports of the first four-way valve and the second four-way valve are communicated with the second port; the sixth electromagnetic valve and the seventh electromagnetic valve are cut off;

when the temperature of the indoor fresh air needs to be raised, a first port of the first four-way valve is communicated with a second port; the first port and the fourth port of the second four-way valve are communicated; and the sixth electromagnetic valve and the seventh electromagnetic valve are cut off.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

the utility model relates to a fresh air conditioner, which comprises an outdoor unit and at least one indoor fresh air unit connected with the outdoor unit; the indoor fresh air unit is internally provided with a first heat exchanger for regulating the temperature of fresh air and a second heat exchanger for carrying out a reverse heat exchange process with the first heat exchanger, and the second heat exchanger is used for carrying out heat recovery on indoor foul air before the foul air is discharged to the outside, so that the heat of indoor air is recovered, an energy storage environment better than that of an outdoor heat exchanger is provided for refrigerant energy storage, the energy efficiency of an air conditioning system is improved, and the energy efficiency of a fresh air conditioner is further improved; in addition, a condensate water module is arranged in the air supply module, condensate water generated when the air supply module is cooled and adjusted can be guided to the upper portion of the second heat exchanger and sprayed onto the second heat exchanger, so that the second heat exchanger can condense and recover cold energy of indoor foul wind and recover cold energy contained in the condensate water, and energy waste is further reduced and the energy efficiency of the fresh air conditioner is further improved.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

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

FIG. 1 is a schematic diagram of a system architecture according to an embodiment;

FIG. 2 is a schematic diagram of a system connection according to an embodiment;

FIG. 3 is a schematic diagram illustrating a refrigerant flow direction of the system according to an embodiment;

FIG. 4 is a schematic diagram illustrating a refrigerant flow direction of the system according to an embodiment;

fig. 5 is a schematic diagram of a system connection according to an embodiment.

Reference numerals are as follows:

1. an indoor fresh air unit; 2. an outdoor unit; 3. a first solenoid valve assembly; 4. a second solenoid valve assembly; 5. a first tee joint; 6. a second tee joint; 7. a third tee joint; 8. a first refrigerant main pipe; 9. a second refrigerant main pipe; 10. a third refrigerant main pipe; 11. a box body; 12. a first heat exchanger; 13. a second heat exchanger; 14. a water pan; 15. draining pump; 16. a condensate pipe; 17. a spacer; 18. a first cavity; 19. a second cavity; 111. a first air inlet; 112. a first air outlet; 113. a second air inlet; 114. a second air outlet; 21. a first compressor; 22. a second compressor; 23. a first four-way valve; 24. a second four-way valve; 25. a sixth electromagnetic valve; 26. a seventh electromagnetic valve; 27. an outdoor heat exchanger; 31. a first solenoid valve; 32. a second solenoid valve; 41. a third solenoid valve; 42. a fourth solenoid valve; 110. a first throttling device; 120. and a second throttling device.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present application, 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 only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

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 application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The air conditioning system in the fresh air conditioner of the application executes the refrigeration cycle of the air conditioning system by using the compressor, the condenser, the expansion valve and the evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation to refrigerate or heat an indoor space.

The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioning system may regulate the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioning system refers to a portion of the refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioning system includes an indoor heat exchanger, and the expansion valve may be provided in either the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioning system is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioning system is used as a cooler in a cooling mode.

Referring to fig. 1, 2, 3, 4 and 5, a fresh air conditioner according to the present invention includes an outdoor unit 2 and at least one indoor fresh air unit 1 connected to the outdoor unit 2.

The indoor fresh air unit 1 comprises an air supply module and an air exhaust module; the air supply module comprises a first box body, a first heat exchanger 12 and a first fan; the first box body is a box body provided with a first air inlet 111 and a first air outlet 112; the first heat exchanger 12 and the first fan are arranged in the first box body; the first air inlet 111 is arranged outdoors and used for introducing fresh air; the first air outlet 112 is arranged indoors and used for sending fresh air; the first heat exchanger 12 is used for adjusting the temperature of the fresh outdoor air and sending the fresh outdoor air into the room; the exhaust module comprises a second box body, a second heat exchanger 13 and a second fan; the second box body is provided with a second air inlet 113 and a second air outlet 114; the second heat exchanger 13 and the second fan are arranged in the second box body; the second air inlet 113 is arranged indoors and used for introducing turbid air; the second air outlet 114 is arranged outdoors and is used for discharging the turbid air to the outdoors; the second heat exchanger 13 is used for recovering heat of indoor dirty air and discharging the indoor dirty air to the outside.

The indoor fresh air unit 1 further comprises a condensed water module which is arranged in the first box body, can lead condensed water in the first box body to the upper side of the second heat exchanger 13, and can leave the condensed water to participate in heat exchange of the second heat exchanger 13 along the second heat exchanger 13.

The utility model relates to a fresh air conditioner, which comprises an outdoor unit 2 and at least one indoor fresh air unit 1 connected with the outdoor unit 2; the first heat exchanger 12 for adjusting the temperature of fresh air and the second heat exchanger 13 for performing the opposite heat exchange process with the first heat exchanger 12 are arranged in the indoor fresh air unit 1 and are used for recovering heat of indoor foul air before the foul air is discharged to the outside, so that the heat of indoor air is recovered, an energy storage environment better than that of the outdoor heat exchanger 27 is provided for refrigerant energy storage, the energy efficiency of an air conditioning system is improved, and the energy efficiency of a fresh air conditioner is further improved; in addition, a condensate water module is arranged in the air supply module, and can guide condensate water generated when the air supply module is cooled and adjusted to the upper part of the second heat exchanger 13 and spray the condensate water to the second heat exchanger 13, so that the second heat exchanger 13 can condense and recycle cold energy of indoor turbid wind and recycle cold energy contained in the condensate water, and energy waste is further reduced and the energy efficiency of the fresh air conditioner is further improved.

According to some embodiments of the present application, referring to fig. 1, 2, 3, 4, 5, the condensate module includes a water pan 14, a drain pump 15, and a condensate pipe 16.

The water pan 14 is disposed directly below the first heat exchanger 12 and is configured to receive the condensed water generated by the first heat exchanger 12.

The drainage pump 15 is connected with one end of a drainage pipe 16, fixedly arranged at the bottom of the water pan 14 and used for draining the condensed water in the water pan 14.

The other end of the condensate pipe 16 is arranged above the second heat exchanger 13; when the drain pump 15 performs the draining operation, the drained condensate water is drained to the upper side of the second heat exchanger 13, so that the second heat exchanger 13 recovers heat in the condensate water.

The fresh air conditioner of the embodiment collects the condensed water of the first heat exchanger 12 through the water pan 14, and the condensed water collected by the water pan 14 is led to the upper part of the second heat exchanger 13 through the drainage pump 15 and the condensed water pipe 16 and is sprayed, so that the second heat exchanger 13 absorbs the cold energy in the condensed water for cooling when condensation heat release is carried out, and the cold energy in the condensed water is recovered; according to the embodiment, the effects of saving energy and improving the energy efficiency of the air conditioning system are realized through a condensate water module structure commonly configured in the air conditioning system, and then the energy efficiency of the fresh air conditioner is improved.

According to some embodiments of the present application, referring to fig. 1, 2, 3, 4, 5, the indoor fresh air unit 1 further comprises an indoor controller, at least one water level sensor; the water level sensor is connected with the indoor controller, is arranged in the water receiving tray 14, detects the water level in the water receiving tray 14 to generate a water level signal, and transmits the water level signal to the indoor controller.

The drainage pump 15 is connected with an indoor controller, and the indoor controller controls the starting operation or the stopping operation; the indoor controller is configured with a preset water level, and judges whether the water level signal reaches the preset water level, and controls the drain pump 15 to operate to drain water when the water level signal reaches the preset water level.

This embodiment prevents through predetermineeing the water level that the comdenstion water in the defrosting pan 14 from overflowing, promotes user's use and experiences.

According to some embodiments of the present application, referring to fig. 1, 2, 3, 4, and 5, the water level sensors are two float type sensors, and each of the two water level sensors is a first water level sensor and a second water level sensor, and the first water level sensor and the second water level sensor are respectively connected to the indoor controller, and are respectively used for detecting a high water level and a low water level, generating a high water level signal and a low water level signal, and transmitting the high water level signal and the low water level signal to the indoor controller.

The indoor controller is also provided with a water drainage stopping water level which is less than a preset water level; when the high water level signal reaches a preset water level, controlling the drainage pump 15 to start; when the low water level signal reaches the stop drain water level, the drain pump 15 is controlled to stop operating.

The fresh air conditioner of the embodiment is provided with the first water level sensor and the second water level sensor to detect the high water level and the low water level in the water pan 14 and generate a high water level signal and a low water level signal which are transmitted to the indoor controller; the indoor controller presets the water level and is less than the stop drain water level of presetting the water level through setting up, carries out the control that begins operation drain pump 15 and stops the control of drain pump 15 operation, makes drain pump 15 be unlikely to frequently open and stop and idle running, and the energy can be saved prolongs the life-span of drain pump 15 and promotes user's use and experiences.

According to some embodiments of the present application, referring to fig. 1, 2, 3, 4, 5, the first case and the second case are integrally provided as a case 11.

A partition 17 is arranged in the box body 11, and the space in the box body 11 is divided into a first cavity 18 and a second cavity 19 which are mutually isolated; the first heat exchanger 12 and the first fan are arranged in the first cavity 18; the second heat exchanger 13 and the second fan are arranged in the second cavity 19.

The first air inlet 111 and the first air outlet 112 are respectively arranged on the box body 11 of the first cavity 18; the second air inlet 113 and the second air outlet 114 are respectively disposed on the box body 11 of the second chamber 19.

The new trend air conditioner of this embodiment reduces 11 costs of box with the first box of air supply module and the integrative box 11 that is of the second box of the module of airing exhaust, and carries out the installation once, improves the installation effectiveness, reduces installation cost, promotes user experience.

According to some embodiments of the present application, referring to fig. 1, 2, 3, 4, 5, the outdoor unit 2 includes a compressor, an outdoor heat exchanger 27.

The outdoor heat exchanger 27, the first heat exchanger 12 and the second heat exchanger 13 are respectively connected with the compressor, and the first heat exchanger 12 and the second heat exchanger 13 are respectively used for heat absorption by refrigerant evaporation or heat release by condensation; the outdoor heat exchanger 27 is used for performing heat release by refrigerant condensation or heat absorption by evaporation together with the second heat exchanger 13.

The fresh air conditioner of the embodiment is provided with the outdoor heat exchanger 27 as a main condenser or evaporator, the second heat exchanger 13 as an auxiliary condenser or evaporator, the second heat exchanger 13 with the auxiliary function is used for recovering indoor heat, and the main condenser or evaporator is arranged to ensure the refrigerating or heating capacity of the air conditioning system.

According to some embodiments of the present application, referring to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the fresh air conditioner further includes a first refrigerant main pipe 8, a second refrigerant main pipe 9, a third refrigerant main pipe 10, a first tee joint 5, a second tee joint 6, a third tee joint 7, a first electromagnetic valve 31, a second electromagnetic valve 32, a third electromagnetic valve 41, a fourth electromagnetic valve 42, a first throttling device 110, and a second throttling device 120.

The first solenoid valve 31 and the second solenoid valve 32 correspond to the first solenoid valve assembly 3 in fig. 1; the third solenoid valve 41 and the fourth solenoid valve 42 correspond to the second solenoid valve assembly 4 in fig. 1.

One end of the first refrigerant main pipe 8 is connected with an exhaust port of the compressor, and the other end of the first refrigerant main pipe is connected with one interface of the first tee joint 5; the other two interfaces of the first tee joint 5 are respectively connected with one end of the first heat exchanger 12 and one end of the second heat exchanger 13 through a first electromagnetic valve 31 and a third electromagnetic valve 41; one end of the outdoor heat exchanger 27 is connected to the discharge port of the compressor.

One end of the second refrigerant main pipe 9 is connected with the return air port of the compressor, and the other end is connected with one interface of the second tee joint 6; the other two ports of the second tee joint 6 are respectively connected with one end of the first heat exchanger 12 and one end of the second heat exchanger 13 through the second electromagnetic valve 32 and the fourth electromagnetic valve 42.

One end of the third refrigerant main pipe 10 is connected with the other end of the outdoor heat exchanger 27, and the other end is connected with one interface of the third tee joint 7; the other two joints of the third tee 7 are respectively connected with the other end of the first heat exchanger 12 and the other end of the second heat exchanger 13 through a first throttling device 110 and a second throttling device 120.

The fresh air conditioner of this embodiment realizes the fresh air conditioning of single cold, refrigerates the new trend of introducing promptly. Specifically, a part of refrigerant gas discharged from an exhaust port of the compressor is condensed and released heat by a first refrigerant main pipe 8 sequentially through a first tee joint 5 and a third electromagnetic valve 41 to a second heat exchanger 13, evaporated and absorbed heat by a second throttling device 120, a third tee joint 7 and a first throttling device 110 to a first heat exchanger 12 sequentially, and then returned to the compressor sequentially through a second electromagnetic valve 32, a second tee joint 6 and a second refrigerant main pipe 9; a part of the refrigerant gas discharged from the exhaust port of the compressor enters the outdoor heat exchanger 27 for condensation and heat release, then passes through the third tee joint 7 and the first throttling device 110 in sequence by the third refrigerant main pipe 10 to the first heat exchanger 12 for evaporation and heat absorption, and then returns to the compressor through the second electromagnetic valve 32, the second tee joint 6 and the second refrigerant main pipe 9 in sequence; at this time, the first solenoid valve 31 and the fourth solenoid valve 42 are closed and blocked. The functions of auxiliary condensation of the second heat exchanger 13, main condensation of the outdoor heat exchanger 27 and evaporation refrigeration of the first heat exchanger 12 are realized, indoor cold energy is recycled, energy is saved, and the energy efficiency of the fresh air conditioner is improved.

According to some embodiments of the present application, referring to fig. 1, 2, 3, 4, and 5, the outdoor unit 2 further includes a control valve including a common end, an inlet end, and an outlet end, and the common end is communicated with the inlet end or the outlet end; the exhaust port of the compressor is respectively connected with one end and the inlet end of the first refrigerant main pipe 8; the common end is connected with one end of the outdoor heat exchanger 27; the outlet end is connected with the air return port of the compressor.

When the indoor fresh air needs to be cooled, the common end of the control valve is communicated with the inlet end; a part of gas refrigerant discharged by the compressor enters the second heat exchanger 13 through the first refrigerant main pipe 8, the first tee joint 5 and the third electromagnetic valve 41 for condensation and heat release, and a part of gas refrigerant enters the outdoor heat exchanger 27 through the control valve for condensation and heat release, and then jointly reaches the first heat exchanger 12 for evaporation and heat absorption.

When the temperature of the indoor fresh air needs to be raised, the common end of the control valve is communicated with the outlet end; gas refrigerants discharged by the compressor enter the first heat exchanger 12 to be condensed and release heat through the first refrigerant main pipe 8, the first tee joint 5 and the first electromagnetic valve 31 in sequence, then a part of refrigerants are evaporated and absorb heat from the third tee joint 7 and the second throttling device 120 to the second heat exchanger 13, and a part of refrigerants are evaporated and absorb heat from the third tee joint 7 and the third refrigerant main pipe 10 to the outdoor heat exchanger 27.

According to some embodiments of the present application, referring to fig. 1, 2, 3, 4, 5, the fresh air conditioner further comprises a fifth solenoid valve, a four-way valve; the four-way valve comprises a first port, a second port, a third port and a fourth port; the first port is connected with the exhaust port of the compressor; the second port is connected with one end of the outdoor heat exchanger 27; the third port is connected with a return air port of the compressor; and the fourth port is connected with the third port through a fifth electromagnetic valve. When the indoor fresh air needs to be heated and cooled, the fifth electromagnetic valve is closed.

The exhaust port of the compressor is connected with one end of the first refrigerant main pipe 8 and the first port of the four-way valve respectively.

When the fresh air in the room needs to be cooled; a part of gas refrigerant discharged by the compressor enters the second heat exchanger 13 for condensation and heat release through the first refrigerant main pipe 8, the first tee joint 5 and the third electromagnetic valve 41 in sequence, then passes through the second throttling device 120, the third tee joint 7 and the first throttling device 110 in sequence to the first heat exchanger 12 for evaporation and heat absorption, and then returns to the compressor through the second electromagnetic valve 32, the second tee joint 6 and the second refrigerant main pipe 9 in sequence; a part of the refrigerant is condensed and released heat from the first port and the second port which are communicated to the outdoor heat exchanger 27, then is evaporated and absorbed heat from the third refrigerant main pipe 10 to the first heat exchanger 12 through the third tee joint 7 and the first throttling device 110 in sequence, and then returns to the compressor through the second electromagnetic valve 32, the second tee joint 6 and the second refrigerant main pipe 9 in sequence; at this time, the first electromagnetic valve 31 and the fourth electromagnetic valve 42 are closed and cut off; the second solenoid valve 32 and the third solenoid valve 41 are both open and communicated.

When the indoor fresh air needs to be heated, a first port of the four-way valve is communicated with a fourth port, and a second port of the four-way valve is communicated with a third port; gas refrigerant discharged by the compressor enters the first heat exchanger 12 for condensation and heat release through the first refrigerant main pipe 8, the first tee joint 5 and the first electromagnetic valve 31 in sequence, then reaches the third tee joint 7 through the first throttling device 110, and is evaporated and absorbed by a part of refrigerant passing through the third tee joint 7 and the second heat exchanger 13 through the second throttling device 120, and then returns to the compressor through the fourth electromagnetic valve 42, the second tee joint 6 and the second refrigerant main pipe 9 in sequence; a part of the refrigerant passing through the third tee joint 7 is evaporated and absorbs heat from the outdoor heat exchanger 27 through the third refrigerant main pipe 10 and then returns to the compressor through the second port and the third port of the four-way valve; at this time, the second solenoid valve 32 and the third solenoid valve 41 are both closed and cut off.

According to some embodiments of the present application, referring to fig. 1, 2, 3, 4, and 5, the outdoor unit 2 includes a first compressor 21, a second compressor 22, a first four-way valve 23, a second four-way valve 24, a sixth solenoid valve 25, and a seventh solenoid valve 26.

First ports of the first four-way valve 23 and the second four-way valve 24 are connected with an exhaust port; a second port of the first four-way valve 23 is connected with one end of the first refrigerant main pipe 8; a second port of the second four-way valve 24 is connected with one end of the outdoor heat exchanger 27; third ports of the first four-way valve 23 and the second four-way valve 24 are connected with a return air port of the compressor; the fourth ports of the first four-way valve 23 and the second four-way valve 24 are connected to the third port of the first four-way valve 23 and the third port of the second four-way valve 24 via a sixth solenoid valve 25 and a seventh solenoid valve 26, respectively.

When the indoor fresh air needs to be cooled, the first ports and the second ports of the first four-way valve 23 and the second four-way valve 24 are communicated; the sixth solenoid valve 25 and the seventh solenoid valve 26 are closed. Part of gas refrigerant discharged by the compressor enters the second heat exchanger 13 for condensation and heat release through a first port and a second port of the first four-way valve 23, the first refrigerant main pipe 8, the first tee joint 5 and the third electromagnetic valve 41 in sequence, then evaporates and absorbs heat from the first heat exchanger 12 through the second throttling device 120, the third tee joint 7 and the first throttling device 110 in sequence, and then returns to the compressor through the second electromagnetic valve 32, the second tee joint 6 and the second refrigerant main pipe 9 in sequence; one part of the refrigerant is condensed and released heat from a first port and a second port which are communicated with each other through a second four-way valve 24 to an outdoor heat exchanger 27, then is evaporated and absorbed heat from a third refrigerant main pipe 10 to a first heat exchanger 12 through a third tee joint 7 and a first throttling device 110 in sequence, and then returns to the compressor through a second electromagnetic valve 32, a second tee joint 6 and a second refrigerant main pipe 9 in sequence; at this time, the first solenoid valve 31 and the fourth solenoid valve 42 are closed and cut off; the second solenoid valve 32 and the third solenoid valve 41 are opened and communicated.

When the indoor fresh air needs to be heated, the first port of the first four-way valve 23 is communicated with the second port; the first port and the fourth port of the second four-way valve 24 are communicated; the sixth and

seventh solenoid valves

25 and 26 are closed. A first port and a second port of the first four-way valve 23 are communicated; a first port and a fourth port of the second four-way valve 24 are communicated, and a second port and a third port are communicated; gas refrigerant discharged by the compressor enters the first heat exchanger 12 for condensation and heat release through the first refrigerant main pipe 8, the first tee joint 5 and the first electromagnetic valve 31 in sequence, then reaches the third tee joint 7 through the first throttling device 110, and is evaporated and absorbed by a part of refrigerant passing through the third tee joint 7 and the second heat exchanger 13 through the second throttling device 120, and then returns to the compressor through the fourth electromagnetic valve 42, the second tee joint 6 and the second refrigerant main pipe 9 in sequence; a part of the refrigerant passing through the third tee joint 7 is evaporated and absorbs heat from the third refrigerant main pipe 10 to the outdoor heat exchanger 27 and then returns to the compressor through the second port and the third port of the second four-way valve 24; at this time, the second solenoid valve 32 and the third solenoid valve 41 are both closed and cut off.

The fresh air conditioner of the embodiment is provided with a plurality of compressors for providing refrigerating or heating capacity for a plurality of indoor fresh air units 1.

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

The above is only a specific embodiment of the present invention, but the protection 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 within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A fresh air conditioner is characterized by comprising an outdoor unit and at least one indoor fresh air unit connected with the outdoor unit;

2. The fresh air conditioner as claimed in claim 1, wherein the condensed water module comprises a water pan, a drain pump, a condensed water pipe;

the water pan is arranged right below the first heat exchanger and used for receiving condensed water generated by the first heat exchanger;

3. The fresh air conditioner of claim 2 wherein the indoor fresh air unit further comprises an indoor controller, at least one water level sensor; the water level sensor is connected with the indoor controller, is arranged in the water receiving tray, detects the water level in the water receiving tray to generate a water level signal, and transmits the water level signal to the indoor controller;

4. The fresh air conditioner according to claim 3, wherein the water level sensors are two float type sensors, each of the two float type sensors is a first water level sensor and a second water level sensor, each of the two float type sensors is connected to the indoor controller, and each of the two float type sensors is used for detecting a high water level and a low water level, generating a high water level signal and a low water level signal, and transmitting the high water level signal and the low water level signal to the indoor controller;

5. The fresh air conditioner as claimed in claim 1, wherein the first and second cases are integrally provided as a case;

6. The fresh air conditioner according to any one of claims 1 to 5, wherein the outdoor unit comprises a compressor, an outdoor heat exchanger;

7. The fresh air conditioner according to claim 6, further comprising a first main refrigerant pipe, a second main refrigerant pipe, a third main refrigerant pipe, a first tee joint, a second tee joint, a third tee joint, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a first throttling device, and a second throttling device;

one end of the first refrigerant main pipe is connected with an exhaust port of the compressor, and the other end of the first refrigerant main pipe is connected with one interface of the first tee joint; the other two interfaces of the first tee joint are respectively connected with one end of the first heat exchanger and one end of the second heat exchanger through the first electromagnetic valve and the third electromagnetic valve; one end of the outdoor heat exchanger is connected with an exhaust port of the compressor;

one end of the second refrigerant main pipe is connected with the return air port of the compressor, and the other end of the second refrigerant main pipe is connected with one interface of the second tee joint; the other two interfaces of the second tee joint are respectively connected with one end of the first heat exchanger and one end of the second heat exchanger through the second electromagnetic valve and the fourth electromagnetic valve;

8. The fresh air conditioner of claim 7 wherein the outdoor unit further comprises a control valve comprising a common port, an inlet port, and an outlet port, wherein the common port is in communication with the inlet port or the outlet port; the exhaust port of the compressor is respectively connected with one end of the first refrigerant main pipe and the inlet end; the public end is connected with one end of the outdoor heat exchanger; the outlet end is connected with a return air port of the compressor;

when the indoor fresh air needs to be cooled, the common end of the control valve is communicated with the inlet end; a part of gas refrigerant discharged by the compressor enters the second heat exchanger through the first refrigerant main pipe, the first tee joint (5) and the third electromagnetic valve for condensation and heat release, and a part of gas refrigerant enters the outdoor heat exchanger through the control valve for condensation and heat release and then jointly reaches the first heat exchanger for evaporation and heat absorption;

when the indoor fresh air needs to be heated, the common end of the control valve is communicated with the outlet end; gas refrigerants discharged by the compressor enter the first heat exchanger for condensation and heat release through the first refrigerant main pipe, the first tee joint (5) and the first electromagnetic valve in sequence, then a part of refrigerants pass through the third tee joint and the second throttling device to reach the second heat exchanger for evaporation and heat absorption, and a part of refrigerants pass through the third tee joint and the third refrigerant main pipe to reach the outdoor heat exchanger for evaporation and heat absorption.

9. The fresh air conditioner according to claim 8, further comprising a fifth solenoid valve; the control valve is a four-way valve and comprises a first port, a second port, a third port and a fourth port; the first port is connected with a gas outlet of the compressor; the second port is connected with one end of the outdoor heat exchanger; the third port is connected with a return air port of the compressor; the fourth port is connected with the third port through the fifth electromagnetic valve;

when the indoor fresh air needs to be cooled, a first port of the four-way valve is communicated with a second port; the fifth electromagnetic valve is closed;

when the indoor fresh air needs to be heated, a first port and a fourth port of the four-way valve are communicated; and the fifth electromagnetic valve is cut off.

10. The fresh air conditioner according to claim 7, wherein the outdoor unit comprises a first compressor, a second compressor, a first four-way valve, a second four-way valve, a sixth solenoid valve, a seventh solenoid valve;

the first ports of the first four-way valve and the second four-way valve are connected with the exhaust port; a second port of the first four-way valve is connected with one end of the first refrigerant main pipe; a second port of the second four-way valve is connected with one end of the outdoor heat exchanger; third ports of the first four-way valve and the second four-way valve are connected with a return air port of the compressor; fourth ports of the first four-way valve and the second four-way valve are respectively connected with a third port of the first four-way valve and a third port of the second four-way valve through the sixth electromagnetic valve and the seventh electromagnetic valve;

when the indoor fresh air needs to be heated, a first port of the first four-way valve is communicated with a second port; the first port and the fourth port of the second four-way valve are communicated; and the sixth electromagnetic valve and the seventh electromagnetic valve are closed.