CN107763737B - Machine and air conditioner in air conditioning - Google Patents

Machine and air conditioner in air conditioning Download PDF

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Publication number
CN107763737B
CN107763737B CN201710999119.8A CN201710999119A CN107763737B CN 107763737 B CN107763737 B CN 107763737B CN 201710999119 A CN201710999119 A CN 201710999119A CN 107763737 B CN107763737 B CN 107763737B
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China
Prior art keywords
indoor
air
shell
module
heat exchanger
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CN201710999119.8A
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Chinese (zh)
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CN107763737A (en
Inventor
杜永
朱小磊
耿延凯
刘敏
孙恺
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青岛海信日立空调系统有限公司
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Priority to CN201710999119.8A priority Critical patent/CN107763737B/en
Publication of CN107763737A publication Critical patent/CN107763737A/en
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Publication of CN107763737B publication Critical patent/CN107763737B/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses an air conditioner indoor unit and an air conditioner, relates to the technical field of air conditioners and can solve the problem that the air quality in a room is reduced along with the prolonging of the service time of the existing air conditioner indoor unit. The invention relates to an indoor unit of an air conditioner, which comprises a shell, wherein an indoor inlet and an indoor outlet which are used for being communicated with the indoor are arranged on the shell, indoor return air can enter the shell from the indoor inlet and is discharged from the indoor outlet, a fresh air inlet which is used for being communicated with the outdoor is also arranged on the shell, a first driving module is arranged in the shell, and the first driving module is started to enable outdoor fresh air to enter the shell from the fresh air inlet and be discharged from the indoor outlet. The invention is used for air conditioning.

Description

Machine and air conditioner in air conditioning

Technical Field

The invention relates to the technical field of air conditioners, in particular to an air conditioner indoor unit and an air conditioner.

Background

With the development of the times, the air conditioner has become an indispensable device for people's life.

An indoor unit of an air conditioner in the prior art generally comprises a shell, wherein an indoor inlet and an indoor outlet which are used for being communicated with the indoor are formed in the shell, indoor return air can enter the shell from the indoor inlet to be subjected to temperature, humidity and other treatment, and then the indoor return air is discharged from the indoor outlet;

that is, the air-conditioning indoor unit in the prior art can only process return air in a room, and cannot introduce fresh air into the room, so that the air quality in the room is reduced along with the prolonging of the service life.

Disclosure of Invention

The embodiment of the invention provides an air conditioner indoor unit and an air conditioner, and can solve the problem that the air quality in a room is reduced along with the prolonging of the service time of the existing air conditioner indoor unit.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the embodiment of the invention provides an indoor unit of an air conditioner, which comprises a shell, wherein an indoor inlet and an indoor outlet which are communicated with the indoor are formed in the shell, indoor return air can enter the shell from the indoor inlet and is discharged from the indoor outlet, a fresh air inlet which is communicated with the outdoor is also formed in the shell, a first driving module is arranged in the shell, and the first driving module is started to enable outdoor fresh air to enter the shell from the fresh air inlet and be discharged from the indoor outlet.

The embodiment of the invention also provides an air conditioner, which comprises an air conditioner outdoor unit and the air conditioner indoor unit.

According to the air conditioner indoor unit and the air conditioner provided by the embodiment of the invention, the shell is also provided with the fresh air inlet which is used for being communicated with the outdoor, the shell is internally provided with the first driving module, the first driving module is started, so that outdoor fresh air can enter the shell from the fresh air inlet and is discharged to the indoor from the indoor outlet, namely, the air conditioner indoor unit and the air conditioner can introduce fresh air into a room, and therefore, the air quality in the room cannot be reduced along with the prolonging of the service time.

Drawings

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

FIG. 1 is a schematic view of an air conditioner according to an embodiment of the present invention;

FIG. 2 is a schematic view of a circulation system of an air conditioner according to an embodiment of the present invention;

FIG. 3 is a schematic view of the water module of FIG. 2 in connection with an end device;

FIG. 4 is a schematic view of an air conditioner in a full-room heating mode according to an embodiment of the present invention;

FIG. 5 is a schematic view of an air conditioner according to an embodiment of the present invention in a full-room heating (defrost) mode;

FIG. 6 is a schematic diagram of an air conditioner in a heating mode, an indoor cooling and dehumidifying mode, and a fresh air reheating mode according to an embodiment of the present invention;

FIG. 7 is a schematic diagram illustrating an air conditioner in a heating mode, an indoor cooling and dehumidifying mode, and a fresh air cooling and dehumidifying mode according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an air conditioner in a full-room cooling + cooling dehumidification mode according to an embodiment of the present invention;

fig. 9 is a schematic diagram of an air conditioner in a full-room cooling + reheating dehumidification mode according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only partial embodiments of the present invention, and not full embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

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

Referring to fig. 1, the indoor unit of an air conditioner according to the embodiment of the present invention includes a casing 1, where the casing 1 is provided with an indoor inlet (not shown in the figure) and an indoor outlet (not shown in the figure) for communicating with an indoor, indoor return air can enter the casing 1 through the indoor inlet and is discharged through the indoor outlet, so that the indoor unit of the air conditioner can process return air in a room, the casing 1 is further provided with a fresh air inlet (not shown in the figure) for communicating with an outdoor, and the casing 1 is provided with a first driving module (not shown in the figure) which is turned on to enable outdoor fresh air to enter the casing 1 through the fresh air inlet and be discharged through the indoor outlet.

In the air-conditioning indoor unit provided by the embodiment of the invention, the shell 1 is also provided with the fresh air inlet which is used for being communicated with the outside, the shell 1 is internally provided with the first driving module, the first driving module is started to enable the outdoor fresh air to enter the shell 1 from the fresh air inlet and be discharged to the inside from the indoor outlet, namely, the air-conditioning indoor unit can introduce the fresh air into a room, so that the air quality in the room cannot be reduced along with the prolonging of the service time.

On the basis of the embodiment, still be equipped with new trend adjusting module 2 and return air adjusting module 3 in the casing 1, new trend adjusting module 2 is used for right the temperature and/or the humidity of outdoor new trend are adjusted, and return air adjusting module 3 is used for right the temperature and/or the humidity of indoor return air are adjusted to outdoor new trend and the air supply travelling comfort of indoor return air have been promoted.

Specifically, the fresh air conditioning module 2 and the return air conditioning module 3 may each include a heat exchanger to adjust the temperature of the air, or a humidifier to increase the humidity of the air, or an adsorption dehumidifying material to reduce the humidity of the air; in the present embodiment, referring to fig. 1 and fig. 2, the fresh air conditioning module 2 preferably includes a first heat exchanger 21 and a second heat exchanger 22, the first heat exchanger 21 is located between the fresh air inlet and the indoor outlet, and the second heat exchanger 22 is located between the first heat exchanger 21 and the indoor outlet; the return air conditioning module 3 preferably comprises a third heat exchanger 31 and a fourth heat exchanger 32, the third heat exchanger 31 being located between the indoor inlet and the indoor outlet, the fourth heat exchanger 32 being located between the third heat exchanger 31 and the indoor outlet; it should be noted that the first heat exchanger 21, the second heat exchanger 22, the third heat exchanger 31 and the fourth heat exchanger 32 can all be used for cooling, heating or closing, so that when the first heat exchanger 21 is used for cooling and the second heat exchanger 22 is used for heating, outdoor fresh air can be dehumidified through the first heat exchanger 21 (at this time, the temperature of the outdoor fresh air is correspondingly reduced), and then is reheated through the second heat exchanger 22, so that the purpose of dehumidifying but not cooling outdoor fresh air is achieved; when third heat exchanger 31 refrigerates and fourth heat exchanger 32 heats, indoor return air can be dehumidified through third heat exchanger 31 earlier (this moment, the temperature of indoor return air is corresponding to be reduced), then reheat through fourth heat exchanger 32, thereby make indoor return air reach the purpose of dehumidification but not cooling, realized outdoor new trend and indoor return air temperature promptly, the independent control of humidity, thereby made air temperature reduce after having avoided the dehumidification, and then guaranteed the travelling comfort of air supply.

In order to make the air-conditioning indoor unit more energy-saving, in this embodiment, the casing 1 is further provided with an exhaust outlet (not shown in the figure) for communicating with the outside, the casing 1 is further provided with a second driving module (not shown in the figure) and a heat recovery module 4, the second driving module is opened to enable indoor exhaust air to enter the casing 1 through the indoor inlet and to be exhausted through the exhaust outlet, and the heat recovery module 4 enables the outdoor fresh air and the indoor exhaust air to perform heat exchange or heat-moisture exchange, so that the temperature and humidity of the indoor exhaust air can be recovered, or the temperature of the indoor exhaust air can be recovered separately, thereby enabling the air-conditioning indoor unit to be more energy-saving.

Further, the heat recovery module 4 includes a heat exchange core 41 and a bypass passage 42, when both the outdoor fresh air and the indoor exhaust air pass through the heat exchange core 41, the outdoor fresh air and the indoor exhaust air can be subjected to heat exchange, when one of the outdoor fresh air and the indoor exhaust air passes through the bypass passage 42, the outdoor fresh air and the indoor exhaust air do not undergo heat exchange, and therefore, in summer or winter, both the outdoor fresh air and the indoor exhaust air can pass through the heat exchange core 41, so that the temperature and humidity of the indoor exhaust air are recovered, and the indoor unit of the air conditioner is more energy-saving, and in a transition season, one of the outdoor fresh air and the indoor exhaust air can pass through the bypass passage 42, so that the resistance is reduced, and the indoor unit is also more energy-saving.

It should be noted that the heat recovery module 4 may be a total heat recovery module or a sensible heat recovery module; when the heat recovery module 4 is a total heat recovery module, the heat exchange core 41 is a total heat exchange core; when the heat recovery module 4 is a sensible heat recovery module, the heat exchange core 41 is a sensible heat exchange core.

In order to further improve the air quality in the room, in this embodiment, the fresh air inlet and/or the indoor inlet is/are provided with an air purification module 5, and the air purification module 5 can perform purification treatment on pollutants such as PM2.5, VOC (volatile organic compounds), formaldehyde and the like on air passing through the air purification module 5, so as to further improve the air quality in the room.

Referring to fig. 2, the indoor unit of the air conditioner in this embodiment further includes an internal circulation module 6, the internal circulation module 6 closes the internal circulation mode to enable both the exhaust outlet and the fresh air inlet to communicate with the outside, at this time, outdoor fresh air can enter the casing 1 through the fresh air inlet, the internal circulation module 6 opens the internal circulation mode to enable the exhaust outlet to communicate with the fresh air inlet, at this time, indoor exhaust air can enter the casing 1 through the fresh air inlet, that is, the present embodiment can switch the air source of the fresh air inlet between the outdoor fresh air and the indoor exhaust air by adjusting the opening and closing of the internal circulation mode.

Referring to fig. 2 and 3, a water module 7 is further arranged in the shell 1, the water module 7 can provide cold and hot water with different temperatures as a refrigerating medium for terminal equipment such as a fan coil E, a floor heating unit F, a radiator G, a ceiling radiation refrigerating device H and a water tank I, and a small temperature difference heat exchange mode can be adopted, so that the refrigerating and heating comfort is improved. Adopt the terminal equipment of structural style such as sky canopy radiation refrigerating plant D, ground heating B, radiator C, owing to cancelled air supply system, noise reduction that can to a great extent.

Preferably, the housing 1 includes a first housing 11, a second housing 12, a third housing 13, and a fourth housing 14; the return air regulating module 3 comprises a return air temperature regulating module and a return air humidity regulating module; the first driving module and the fresh air adjusting module 2 are arranged in the first shell 11, the fresh air inlet and the indoor outlet are arranged on the first shell 11, and the first driving module is started to enable outdoor fresh air to enter the first shell 11 from the fresh air inlet and to be discharged from the indoor outlet on the first shell 11; the return air humidity adjusting module is arranged in the second shell 12, the second shell 12 is provided with the indoor inlet and the indoor outlet, and the indoor return air can enter the second shell 12 from the indoor inlet on the second shell 12 for humidity treatment and then is discharged from the indoor outlet on the second shell 12; a water module 7 is arranged in the third shell 13; the return air temperature adjusting module is arranged in the fourth shell 14, the indoor inlet and the indoor outlet are formed in the fourth shell 14, indoor return air can enter the fourth shell 14 from the indoor inlet in the fourth shell 14 to be subjected to temperature treatment, and then is discharged from the indoor outlet in the fourth shell 14, so that the indoor unit of the air conditioner can be divided into four parts through the first shell 11, the second shell 12, the third shell 13 and the fourth shell 14 (the first shell 11 corresponds to the first indoor unit, the second shell 12 corresponds to the second indoor unit, the third shell 13 corresponds to the third indoor unit, and the fourth shell 14 corresponds to the fourth indoor unit), a user can freely select the indoor unit according to different requirements in a room, and the installation and the design are more convenient and simple.

The return air temperature adjusting module in the indoor unit four is preferably a fifth heat exchanger 33 to realize the quick cooling and heating function of the indoor return air. The indoor unit can be any structure type such as air pipe air supply type, embedded type, hidden type, open wall hanging type, floor type, kitchen and bathroom special use and the like.

The embodiment of the invention also provides an air conditioner, which comprises an air conditioner outdoor unit 100 and the air conditioner indoor unit of any one of the embodiments.

According to the air conditioner provided by the embodiment of the invention, as the shell 1 of the indoor unit of the air conditioner is also provided with the fresh air inlet which is used for being communicated with the outdoor space, the shell 1 is internally provided with the first driving module, and the first driving module is started to enable outdoor fresh air to enter the shell 1 from the fresh air inlet and be discharged to the indoor space from the indoor outlet, namely the air conditioner can introduce the fresh air into the room, the air quality in the room cannot be reduced along with the prolonging of the service time.

Fig. 2 is a diagram illustrating an embodiment of an air conditioner according to the present invention, wherein an outdoor unit 100 of the air conditioner includes a compressor 101, an air outlet of the compressor 101 is sequentially connected to an oil separator 102 and an a port of a four-way valve 103, a B port of the four-way valve 103 is sequentially connected to an outdoor heat exchanger 104 and a liquid pipe 105, a C port of the four-way valve 103 is sequentially connected to a gas-liquid separator 106 and a suction port of the compressor 101, a D port of the four-way valve 103 is connected to a gas pipe 107, a first solenoid valve 108 is connected between the a port of the four-way valve 103 and an exhaust pipe 109, and a second solenoid valve;

the indoor unit one comprises a humidifier 23, a first heat exchanger 21, a second heat exchanger 22, a heat exchange core 41, a bypass channel 42, an air purification module 5 and an internal circulation module 6, wherein the first heat exchanger 21 is connected between a liquid pipe 105 and an air pipe 107, the refrigerant flow rate of the first heat exchanger is controlled through a first expansion valve EVI, and then a dehumidification state point and a dehumidification amount are controlled, the second heat exchanger 22 is connected between the liquid pipe 105 and an air pipe 109, the refrigerant flow rate of the second heat exchanger is controlled through a second expansion valve EVR, and then the reheating amount and a reheated air state point are controlled;

the second indoor unit comprises a humidifier 34, a third heat exchanger 31 and a fourth heat exchanger 32, the third heat exchanger 31 is connected between a liquid pipe 105 and an air pipe 107, the refrigerant flow rate of the third heat exchanger is controlled through a first expansion valve EVI, and then a dehumidification state point and a dehumidification amount are controlled, the fourth heat exchanger 32 is connected between the liquid pipe 105 and an exhaust pipe 109, the refrigerant flow rate of the fourth heat exchanger is controlled through a second expansion valve EVR, and then a reheating amount and a reheated air state point are controlled;

the indoor unit III comprises a water module 7, and the water module 7 is connected between a liquid pipe 105 and an air pipe 107;

the indoor unit four includes a fifth heat exchanger 33, and the fifth heat exchanger 33 is connected between the liquid pipe 105 and the air pipe 107.

The air conditioner can realize the following modes:

1. full-chamber heating mode:

referring to fig. 4, at this time, the four-way valve 103 is in the heating mode, BC and AD are on, the first solenoid valve 108 is opened, the second solenoid valve 110 is closed, and all of the first indoor unit, the second indoor unit, the third indoor unit, and the fourth indoor unit are in the heating mode. The refrigerant discharged from the compressor 101 enters each indoor unit through the air pipe 107 and the air discharge pipe 109.

And the first heat exchanger 21 and the second heat exchanger 22 of the first indoor unit are both in a condensation heat exchange mode. Outdoor fresh air passes through the air purification module 5 and then exchanges heat with indoor exhaust air, so that heat is recovered, then enters the first heat exchanger 21 and the second heat exchanger 22 for reheating treatment, then passes through the humidifier 23 for humidifying treatment, and finally is sent into a room. The above opened functional sections can be switched on and off, adjusted in refrigerant quantity and the like according to needs, and the purpose is to enable the temperature and humidity of air sent into a room to meet the control requirements.

And the third heat exchanger 31 and the fourth heat exchanger 32 of the second indoor unit are both in a condensation heat exchange mode. The indoor return air enters the third heat exchanger 31 and the fourth heat exchanger 32 for reheating treatment, then passes through the humidifier 34 for humidifying treatment, and finally is sent into the room. The above opened functional sections can be switched on and off, adjusted in refrigerant quantity and the like according to needs, and the purpose is to enable the temperature and humidity of air sent into a room to meet the control requirements.

The third indoor unit and the fourth indoor unit are both in a heating mode, and refrigerant enters the water module 7 and the fifth heat exchanger 33 through the air pipe 107, is condensed and then returns to the outdoor air conditioner 100 through the liquid pipe 105.

2. Full-chamber heating (defrost) mode:

referring to fig. 5, at this time, the four-way valve 103 is in the cooling mode, the AB and the CD are turned on, the first solenoid valve 108 is closed, the second solenoid valve 110 is opened, the first indoor unit, the second indoor unit, and the fourth indoor unit are in the cooling mode, and the third indoor unit is in the stop mode for preventing the water side from freezing. The refrigerant discharged from the compressor 101 enters the outdoor heat exchanger 104 to be condensed and defrosted, then enters the indoor unit one, the indoor unit two and the indoor unit four through the liquid pipe 105, and then returns to the outdoor side through the air pipe 107 and the air exhaust pipe 109, thereby completing a refrigeration cycle. After defrosting of the outdoor heat exchanger 104 is completed, the mode is exited, and the whole room heating mode is returned.

3. Heating, indoor cooling and dehumidifying and fresh air reheating modes:

referring to fig. 6, at this time, the four-way valve 103 is in the heating mode, BC and AD are on, the first solenoid valve 108 is closed, the second solenoid valve 110 is opened, all of the first indoor unit, the third indoor unit, and the fourth indoor unit are in the heating mode, and the second indoor unit is in the cooling and dehumidifying mode. The refrigerant discharged from the compressor 101 enters the first indoor unit, the third indoor unit and the fourth indoor unit through the air pipe 107.

The first heat exchanger 21 of the first indoor unit is in a condensation heat exchange mode, and the second heat exchanger 22 is in a closed state. Outdoor fresh air passes through the air purification module 5 and then exchanges heat with indoor exhaust air, so that heat is recovered, then the heat is sent into the first heat exchanger 21 for reheating treatment, then the heat is humidified by the humidifier 23, and finally the heat is sent into a room. The above opened functional sections can be switched on and off, adjusted in refrigerant quantity and the like according to needs, and the purpose is to enable the temperature and humidity of air sent into a room to meet the control requirements.

The third heat exchanger 31 of the second indoor unit is in the off mode, and the fourth heat exchanger 32 is in the cooling and dehumidifying mode. The indoor return air enters the fourth heat exchanger 32 for cooling and dehumidification, and finally is sent into a room. The functional mode is suitable for the occasions with humidification sources and heat sources in rooms and needing dehumidification treatment

The third indoor unit and the fourth indoor unit are both in a heating mode, and refrigerant enters the water module 7 and the fifth heat exchanger 33 through the air pipe 107, is condensed and then returns to the outdoor air conditioner 100 through the liquid pipe 105.

4. Heating, indoor cooling and dehumidifying and fresh air cooling and dehumidifying mode

Referring to fig. 7, at this time, the four-way valve 103 is in the heating mode, BC and AD are on, the first solenoid valve 108 is closed, the second solenoid valve 110 is opened, all of the third indoor unit and the fourth indoor unit are in the heating mode, and the first indoor unit and the second indoor unit are in the cooling and dehumidifying mode. The refrigerant discharged from the compressor 101 enters the indoor units three and four through the air pipe 107.

The first heat exchanger 21 of the first indoor unit is in a closed mode, and the second heat exchanger 22 is in a cooling and dehumidifying mode. The fresh outdoor air enters the second heat exchanger 22 for cooling and dehumidification, and finally is sent into a room. The mode is suitable for transition seasons with high outdoor fresh air humidity and slightly high temperature.

The third heat exchanger 31 of the second indoor unit is in the off mode, and the fourth heat exchanger 32 is in the cooling and dehumidifying mode. The indoor return air enters the fourth heat exchanger 32 for cooling and dehumidification, and finally is sent into a room. The functional mode is suitable for the occasions with humidification sources and heat sources in rooms and needing dehumidification treatment

The third indoor unit and the fourth indoor unit are both in a heating mode, and refrigerant enters the water module 7 and the fifth heat exchanger 33 through the air pipe 107, is condensed and then returns to the outdoor air conditioner 100 through the liquid pipe 105.

This mode is suitable for the excessive season that has the heating demand and simultaneously has the dehumidification demand.

5. Whole-room refrigeration + cooling dehumidification mode

Referring to fig. 8, at this time, the four-way valve 103 is in the cooling mode, the AB and the CD are turned on, the first electromagnetic valve 108 is closed, the second electromagnetic valve 110 is opened, and the first indoor unit, the second indoor unit, the third indoor unit, and the fourth indoor unit are all in the cooling mode. The refrigerant discharged from the compressor 101 enters the outdoor condenser for condensation and defrosting, then enters the indoor unit one, the indoor unit two, the indoor unit three and the indoor unit four through the liquid pipe 105, and then returns to the outdoor side through the air pipe 107 and the air exhaust pipe 109, thereby completing a refrigeration cycle.

And the first heat exchanger 21 and the second heat exchanger 22 of the first indoor unit are both in a cooling and dehumidifying mode. Outdoor fresh air passes through the air purification module 5 and then exchanges heat with indoor exhaust air, so that heat is recovered, and then the heat is dehumidified in the first heat exchanger 21 and the second heat exchanger 22 and finally sent into a room. The above opened functional sections can be switched on and off, adjusted in refrigerant quantity and the like according to needs, and the purpose is to enable the temperature and humidity of air sent into a room to meet the control requirements.

And the third heat exchanger 31 and the fourth heat exchanger 32 of the second indoor unit are both in a cooling and dehumidifying mode. The indoor return air enters the third heat exchanger 31 and the fourth heat exchanger 32 for cooling and dehumidification, and finally is sent into a room.

6. Whole-chamber refrigeration + reheating dehumidification mode

Referring to fig. 9, at this time, the four-way valve 103 is in the cooling mode, the AB and the CD are on, the first solenoid valve 108 is opened, the second solenoid valve 110 is closed, the first indoor unit and the second indoor unit are in the dehumidification and reheating mode, and the third indoor unit and the fourth indoor unit are in the cooling mode.

The first heat exchanger 21 of the first indoor unit is in the dehumidification mode, and the second heat exchanger 22 is in the reheat state. Outdoor fresh air passes through the air purification module 5 and then exchanges heat with indoor exhaust air, so that heat is recovered, then the heat is dehumidified in the first heat exchanger 21, and then the heat is reheated in the second heat exchanger 22, and finally the heat is sent to a room. The above opened functional sections can be switched on and off, adjusted in refrigerant quantity and the like according to needs, and the purpose is to enable the temperature and humidity of air sent into a room to meet the control requirements.

The third heat exchanger 31 of the second indoor unit is in the dehumidification mode, and the fourth heat exchanger 32 is in the reheat state. The indoor return air enters the third heat exchanger 31 for dehumidification treatment, then enters the fourth heat exchanger 32 for reheating treatment, and finally is sent to the room. The above opened functional sections can be switched on and off, adjusted in refrigerant quantity and the like according to needs, and the purpose is to enable the temperature and humidity of air sent into a room to meet the control requirements.

The invention comprehensively utilizes independent temperature and humidity control technology, small temperature difference refrigeration and heating technology, heat recovery technology, multi-split air conditioner technology and the like, realizes the comprehensive utilization of various air conditioning systems such as a comfortable air conditioner, a clean air conditioner, a fresh air conditioner and the like, and achieves the purposes of constant temperature, constant humidity, constant oxygen and constant air quality. The air conditioner provided by the embodiment of the invention performs multi-connected on-line with the outdoor unit through the four indoor units, is flexible and convenient in installation type, excellent in comprehensive control effect, high in integration level, low in system cost and convenient to install and use.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (7)

1. An indoor unit of an air conditioner comprises a shell, wherein an indoor inlet and an indoor outlet which are used for being communicated with the indoor are formed in the shell, indoor return air can enter the shell from the indoor inlet and can be discharged from the indoor outlet, and the indoor return air conditioner is characterized in that a fresh air inlet which is used for being communicated with the outdoor is further formed in the shell, a first driving module is arranged in the shell, and the first driving module is started to enable outdoor fresh air to enter the shell from the fresh air inlet and to be discharged from the indoor outlet;
the fresh air adjusting module is used for adjusting the temperature and/or the humidity of the outdoor fresh air, and the return air adjusting module is used for adjusting the temperature and/or the humidity of the indoor return air;
a water module is also arranged in the shell;
the shell comprises a first shell, a second shell, a third shell and a fourth shell;
the return air regulating module comprises a return air temperature regulating module and a return air humidity regulating module;
the first driving module and the fresh air adjusting module are arranged in the first shell, and the fresh air inlet and the indoor outlet are arranged on the first shell; the second shell is internally provided with the return air humidity adjusting module, and the second shell is provided with the indoor inlet and the indoor outlet; the water module is arranged in the third shell; the fourth casing is internally provided with the return air temperature adjusting module, and the fourth casing is provided with the indoor inlet and the indoor outlet.
2. An indoor unit of an air conditioner according to claim 1, wherein the fresh air conditioning module includes a first heat exchanger and a second heat exchanger, the first heat exchanger being located between the fresh air inlet and the indoor outlet, the second heat exchanger being located between the first heat exchanger and the indoor outlet;
the return air regulating module comprises a third heat exchanger and a fourth heat exchanger, the third heat exchanger is positioned between the indoor inlet and the indoor outlet, and the fourth heat exchanger is positioned between the third heat exchanger and the indoor outlet.
3. An indoor unit of an air conditioner as claimed in claim 1, wherein the casing further has an exhaust outlet for communicating with the outside, the casing further has a second driving module and a heat recovery module, the second driving module is turned on to allow the indoor exhaust air to enter the casing through the indoor inlet and to be exhausted through the exhaust outlet, and the heat recovery module allows the outdoor fresh air and the indoor exhaust air to perform heat exchange or heat-moisture exchange.
4. The indoor unit of claim 3, wherein the heat recovery module comprises a heat exchange core and a bypass passage, wherein when both the fresh outdoor air and the indoor exhaust air pass through the heat exchange core, the fresh outdoor air and the indoor exhaust air can exchange heat, and when one of the fresh outdoor air and the indoor exhaust air passes through the bypass passage, the fresh outdoor air and the indoor exhaust air do not exchange heat.
5. An indoor unit of an air conditioner according to claim 1, wherein an air cleaning module is provided to the fresh air inlet and/or the indoor inlet.
6. The indoor unit of claim 3, further comprising an internal circulation module, wherein the internal circulation module closes the internal circulation mode to communicate both the exhaust air outlet and the fresh air inlet with the outside, and opens the internal circulation mode to communicate the exhaust air outlet with the fresh air inlet.
7. An air conditioner comprising an outdoor unit of the air conditioner, characterized by further comprising the indoor unit of the air conditioner as set forth in any one of claims 1 to 6.
CN201710999119.8A 2017-10-20 2017-10-20 Machine and air conditioner in air conditioning CN107763737B (en)

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