CN219083269U

CN219083269U - Air conditioner system

Info

Publication number: CN219083269U
Application number: CN202223106224.XU
Authority: CN
Inventors: 刘群波; 许克; 李彬
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-05-26
Anticipated expiration: 2032-11-22

Abstract

The utility model provides an air conditioner system, which comprises an outdoor heat exchanger, a first throttling element, a second throttling element, an indoor heat exchange assembly and a compressor, wherein the outdoor heat exchanger is connected with the first throttling element; the indoor heat exchange assembly comprises a first indoor heat exchanger and a second indoor heat exchanger; the compressor is provided with a return air port, a first exhaust port and a second exhaust port; the air conditioner system has a reheat dehumidification mode, and a reheat circulation flow path and a refrigeration dehumidification circulation flow path are formed in the air conditioner system corresponding to the mode; the second exhaust port, the first indoor heat exchanger, the first throttling element, the second indoor heat exchanger and the air return port are sequentially connected to the reheating circulation flow path; the first exhaust port, the outdoor heat exchanger, the second throttling element, the second indoor heat exchanger and the air return port are sequentially connected to the refrigeration and dehumidification circulating flow path; a distribution branch is arranged between the second exhaust port and the outdoor heat exchanger, and a flow regulating device is arranged on the distribution branch and used for regulating the flow of the refrigerant entering the outdoor heat exchanger from the second exhaust port for condensation.

Description

Air conditioner system

Technical Field

The utility model relates to the technical field of household appliances, in particular to an air conditioner system.

Background

The conventional air conditioner dehumidification mode is the same as the refrigeration mode, and the aim of dehumidification is achieved by controlling the evaporator to refrigerate and enable the temperature of the air to be lower than the dew point of air and cooling and absorbing moisture when the air passes through the low-temperature evaporator; the dehumidification reheating technology is adopted, so that dehumidified air is heated by the reheating heat exchanger, a dehumidification reheating function is realized, but the temperature of the air is reduced after dehumidification under certain operation conditions in the existing dehumidification reheating technology, and dehumidification without temperature reduction or temperature rise cannot be realized.

Disclosure of Invention

The utility model mainly aims to provide an air conditioner system, which aims to solve the problem that the existing dehumidification reheating technology cannot realize dehumidification without temperature reduction or temperature increase.

To achieve the above object, the present utility model provides an air conditioner system comprising:

an outdoor heat exchanger, a first throttling element, and a second throttling element;

the indoor heat exchange assembly comprises at least two indoor heat exchangers, wherein the at least two indoor heat exchangers comprise a first indoor heat exchanger and a second indoor heat exchanger; the method comprises the steps of,

the compressor is provided with a return air port, a first exhaust port and a second exhaust port;

the air conditioner system is provided with a reheating and dehumidification mode, and a reheating circulation flow path and a refrigerating and dehumidifying circulation flow path are formed in the air conditioner system corresponding to the reheating and dehumidification mode;

The second exhaust port, the first indoor heat exchanger, the first throttling element, the second indoor heat exchanger and the air return port are sequentially connected to the reheating circulation flow path;

the first exhaust port, the outdoor heat exchanger, the second throttling element, the second indoor heat exchanger and the air return port are sequentially connected to the refrigeration and dehumidification circulating flow path;

a distribution branch is arranged between the second exhaust port and the outdoor heat exchanger, and a flow regulating device is arranged on the distribution branch and used for regulating the flow of the refrigerant entering the outdoor heat exchanger from the second exhaust port for condensation.

Optionally, the flow regulating device comprises a first electronic expansion valve.

Optionally, each indoor heat exchanger is provided with a first refrigerant interface and a second refrigerant interface, the second refrigerant interface of the first indoor heat exchanger is communicated with the first refrigerant interface of the second indoor heat exchanger, the first throttling element is arranged at the second refrigerant interface of the first indoor heat exchanger, and the first refrigerant interface of the second indoor heat exchanger is provided with a third throttling element;

the first refrigerant interface of the outdoor heat exchanger is connected with the second throttling element, and the second throttling element is connected with the first throttling element and the third throttling element;

One end of the distribution branch is connected with a first refrigerant interface of the first indoor heat exchanger, and the other end of the distribution branch is connected with the first exhaust port;

and in a reheat dehumidification mode of the air conditioner system, the second exhaust port is communicated between one end of the distribution branch and the first refrigerant interface of the first indoor heat exchanger, and the second refrigerant interface of the outdoor heat exchanger is communicated between the other end of the distribution branch and the first exhaust port.

Optionally, the air conditioner system includes two switching elements, each having a first interface, a second interface, a third interface, and a fourth interface, the two switching elements including a first switching element and a second switching element;

the first switching element is characterized in that a first interface of the first switching element is communicated with the second exhaust port, a second interface of the first switching element is communicated between one end of the distribution branch and a first refrigerant interface of the first indoor heat exchanger, a third interface of the first switching element is connected with the return air port, and a fourth interface of the first switching element is connected between the first exhaust port and the other end of the distribution branch;

the first port of the second switching element is connected between the first exhaust port and the other end of the distribution branch, the second port of the second switching element is communicated with the second refrigerant port of the second indoor heat exchanger, the third port of the second switching element is connected with the return port, and the fourth port of the second switching element is connected with the other refrigerant port of the outdoor heat exchanger;

The first switching element is used for switching the first interface of the first switching element to be communicated with the second interface of the first switching element, the third interface of the first switching element is used for switching the third interface of the first switching element to be communicated with the fourth interface of the second switching element, the first interface of the second switching element is switched to be communicated with the fourth interface of the second switching element, the second interface of the second switching element is communicated with the third interface of the second switching element, and a passage between the fourth interface of the first switching element and the first interface of the second switching element is closed, so that the air conditioner system is in the reheating and dehumidifying mode.

Optionally, in the first switching element, a first interface thereof is switched to communicate with a fourth interface thereof, a second interface thereof is switched to communicate with a third interface thereof, in the second switching element, a first interface thereof is switched to communicate with a fourth interface thereof, a second interface thereof is communicated with a third interface thereof, the flow dividing device is closed to close the distribution branch, and a passage between the fourth interface of the first switching element and the first interface of the second switching element is opened, so that the air conditioner system has a refrigeration mode.

Optionally, in the first switching element, a first interface of the first switching element is communicated with a second interface of the first switching element, a third interface of the first switching element is communicated with a fourth interface of the first switching element, in the second switching element, a first interface of the first switching element is communicated with a second interface of the second switching element, a third interface of the second switching element is communicated with a fourth interface of the second switching element, the splitting device is opened to open the distribution branch, and a passage between the fourth interface of the first switching element and the first interface of the second switching element is closed, so that the air conditioner system has a heating mode.

Optionally, a solenoid valve is provided on a passage between the fourth interface of the first switching element and the first interface of the second switching element.

Optionally, a first stop valve is arranged between the second interface of the first switching element and the first refrigerant interface of the first indoor heat exchanger; and/or the number of the groups of groups,

a second stop valve is arranged between a second interface of the second switching element and a second refrigerant interface of the second indoor heat exchanger; and/or the number of the groups of groups,

a third stop valve is arranged between the second refrigerant interface of the outdoor heat exchanger and the second refrigerant interface of the second indoor heat exchanger.

Optionally, a gas-liquid separator is arranged at the air return port of the compressor.

Optionally, the first heat exchanger and the second heat exchanger are formed with a heat exchanger group, and the heat exchanger group is provided with a plurality of heat exchangers.

Optionally, a third indoor heat exchanger is further included, and the third indoor heat exchanger is arranged in parallel with the second indoor heat exchanger.

Optionally, a fourth throttling element is arranged at the first refrigerant interface of the third indoor heat exchanger.

Optionally, the air conditioner system further comprises an outdoor fan, and the outdoor fan is arranged corresponding to the outdoor heat exchanger.

The utility model provides an air conditioner system, which comprises an outdoor heat exchanger, a first throttling element, a second throttling element, an indoor heat exchange assembly and a compressor, wherein the indoor heat exchange assembly comprises a first indoor heat exchanger and a second indoor heat exchanger, and the compressor is provided with a return air port, a first exhaust port and a second exhaust port; a reheat circulation flow path and a refrigeration dehumidification circulation flow path are formed in the air conditioner system corresponding to the reheat dehumidification mode; the second exhaust port, the first indoor heat exchanger, the first throttling element, the second indoor heat exchanger and the air return port are sequentially connected to the reheating circulation flow path; the first exhaust port, the outdoor heat exchanger, the second throttling element, the second indoor heat exchanger and the air return port are sequentially connected to the refrigeration and dehumidification circulating flow path; a distribution branch is arranged between the second exhaust port and the outdoor heat exchanger, and a flow regulating device is arranged on the distribution branch and used for regulating the flow of the refrigerant entering the outdoor heat exchanger from the second exhaust port for condensation; in the reheat dehumidification mode, the first indoor heat exchanger is formed as a reheat heat exchanger, the second indoor heat exchanger is formed as a refrigeration dehumidification heat exchanger, and the outdoor heat exchanger is formed as a condenser; when the system performs cooling and dehumidifying, the flow regulating device regulates the flow of the refrigerant entering the outdoor heat exchanger from the second exhaust port to be condensed to be increased, so that the flow of the refrigerant entering the first indoor heat exchanger from the second exhaust port to be reheated is reduced, and the reheating capacity of the first indoor heat exchanger can be weakened; when the system executes dehumidification without cooling or dehumidification with heating, the flow regulating device regulates the flow of the refrigerant entering the outdoor heat exchanger from the second exhaust port to be condensed to be reduced, and correspondingly, the flow of the refrigerant entering the first indoor heat exchanger from the second exhaust port to be reheated is increased, so that the reheating capacity of the first indoor heat exchanger is improved; therefore, the air conditioner system can simultaneously realize simultaneous cooling and dehumidification and no cooling and dehumidification or heating and dehumidification, thereby meeting the requirements of users and improving the user experience; meanwhile, as the compressor is provided with the first exhaust port and the second exhaust port which are mutually independent, the air conditioner system is provided with two mutually independent exhaust paths, so that the air conditioner system can realize two independent high-pressure control, and further indoor temperature control in the reheating and dehumidification mode is more accurate.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of an air conditioner system according to the present utility model;

FIG. 2 is a schematic illustration of the air conditioner system of FIG. 1 in a reheat dehumidification mode;

FIG. 3 is a schematic diagram of the air conditioner system of FIG. 1 in a cooling mode;

fig. 4 is a schematic view of the air conditioner system of fig. 1 in a heating mode.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Air conditioner system	4	Flow regulating device
1	Outdoor heat exchanger	401	First electronic expansion valve
				101	Second throttling element	5	First switching element
2	Indoor heat exchange assembly	6	Second switching element
				201	First indoor heat exchanger	7	Electromagnetic valve
202	First throttling element	8	First stop valve
				203	Second indoor heat exchanger	9	Second stop valve
204	Third throttling element	10	Third stop valve
				205	Third indoor heat exchanger	11	Gas-liquid separator
206	Fourth throttling element	12	Outdoor fan
				3	Compressor	a	Reheat circulation flow path
301	Air return port	b	Refrigeration and dehumidification circulation flow path
				302	First exhaust port	c	Distribution branch
303	Second exhaust port

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the case where a directional instruction is involved in the embodiment of the present utility model, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. Also, the technical solutions of the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist and is not within the scope of protection claimed by the present utility model.

In view of this, the present utility model provides an air conditioner system. Fig. 1 to 4 are schematic views showing an embodiment of an air conditioner system according to the present utility model.

Referring to fig. 1, the air conditioner system 100 includes an outdoor heat exchanger 1, a first throttling element 202, a second throttling element 101, an indoor heat exchange assembly 2, and a compressor 3; the indoor heat exchange assembly 2 comprises at least two indoor heat exchangers, wherein the at least two indoor heat exchangers comprise a first indoor heat exchanger 201 and a second indoor heat exchanger 203; the compressor 3 has a return port 301, a first discharge port 302, and a second discharge port 303; the air conditioner system 100 has a reheat dehumidification mode, and a reheat circulation flow path a and a refrigeration dehumidification circulation flow path b are formed in the air conditioner system 100 in correspondence to the reheat dehumidification mode; the second exhaust port 303, the first indoor heat exchanger 201, the first throttling element 202, the second indoor heat exchanger 203, and the return air port 301 are connected to the reheat circulation flow path a in this order; the first exhaust port 302, the outdoor heat exchanger 1, the second throttling element 101, the second indoor heat exchanger 203, and the air return port 301 are sequentially connected to the refrigeration and dehumidification circulation flow path b; a distribution branch c is arranged between the second exhaust port 303 and the outdoor heat exchanger 1, and a flow regulating device 4 is arranged on the distribution branch c and used for regulating the flow of the refrigerant entering the outdoor heat exchanger 1 from the second exhaust port 303 for condensation.

The utility model provides an air conditioner system 100, which comprises an outdoor heat exchanger 1, a first throttling element 202, a second throttling element 101, an indoor heat exchange assembly 2 and a compressor 3, wherein the indoor heat exchange assembly 2 comprises a first indoor heat exchanger 201 and a second indoor heat exchanger 203, and the compressor 3 is provided with a return air port 301, a first exhaust port 302 and a second exhaust port 303; in correspondence with the reheat dehumidification mode, a reheat circulation flow path a and a cooling dehumidification circulation flow path b are formed in the air conditioner system 100; the second exhaust port 303, the first indoor heat exchanger 201, the first throttling element 202, the second indoor heat exchanger 203, and the return air port 301 are connected to the reheat circulation flow path a in this order; the first exhaust port 302, the outdoor heat exchanger 1, the second throttling element 101, the second indoor heat exchanger 203, and the air return port 301 are sequentially connected to the refrigeration and dehumidification circulation flow path b; a distribution branch c is arranged between the second exhaust port 303 and the outdoor heat exchanger 1, and a flow regulating device 4 is arranged on the distribution branch c and used for regulating the flow of the refrigerant entering the outdoor heat exchanger 1 from the second exhaust port 303 for condensation; in the reheat dehumidification mode, the first indoor heat exchanger 201 is formed as a reheat heat exchanger, the second indoor heat exchanger 203 is formed as a cooling dehumidification heat exchanger, and the outdoor heat exchanger 1 is formed as a condenser; when the system performs cooling and dehumidifying, the flow regulating device 4 regulates the flow rate of the refrigerant which is led to enter the second exhaust port 303 into the outdoor heat exchanger 1 for condensation to be increased, so that the flow rate of the refrigerant which is led to enter the first indoor heat exchanger 201 from the second exhaust port 303 for reheating is reduced, and the reheating capacity of the first indoor heat exchanger 201 can be weakened; when the system performs dehumidification without cooling or dehumidification with heating, the flow regulating device 4 regulates the flow of the refrigerant entering the outdoor heat exchanger 1 from the second exhaust port 303 to be condensed to be reduced, and correspondingly, the flow of the refrigerant entering the first indoor heat exchanger 201 from the second exhaust port 303 to be reheated is increased, so that the reheating capacity of the first indoor heat exchanger 201 is improved; in this way, the air conditioner system 100 can simultaneously realize cooling and dehumidifying and non-cooling and dehumidifying or heating and dehumidifying, thereby meeting the user requirements and improving the user experience; meanwhile, since the compressor 3 has the first exhaust port 302 and the second exhaust port 303 that are independent of each other, the air conditioner system 100 has two exhaust paths that are independent of each other, so that the air conditioner system 100 can realize two independent high-pressure control, and thus indoor temperature control in the reheat dehumidification mode is more accurate.

Specifically, the flow regulating device 4 includes a first electronic expansion valve 41; when the system performs cooling and dehumidification, the opening degree of the first electronic expansion valve 41 is increased, so that the flow rate of the refrigerant entering the outdoor heat exchanger 1 from the second exhaust port 303 for condensation is increased, and correspondingly, the flow rate of the refrigerant entering the first indoor heat exchanger 201 from the second exhaust port 303 for reheating is reduced, so that the reheating capacity of the first indoor heat exchanger 201 can be weakened; when the system performs dehumidification without temperature reduction or dehumidification with temperature increase, the opening degree of the first electronic expansion valve 41 is reduced, so that the flow rate of the refrigerant entering the outdoor heat exchanger 1 from the second exhaust port 303 for condensation is reduced, and correspondingly, the flow rate of the refrigerant entering the first indoor heat exchanger 201 from the second exhaust port 303 for reheating is increased, so that the reheating capacity of the first indoor heat exchanger 201 can be improved.

In an embodiment, each indoor heat exchanger has a first refrigerant interface and a second refrigerant interface, the second refrigerant interface of the first indoor heat exchanger 201 is communicated with the first refrigerant interface of the second indoor heat exchanger 203, the first throttling element 202 is disposed at the second refrigerant interface of the first indoor heat exchanger 201, and the first refrigerant interface of the second indoor heat exchanger 203 is disposed with a third throttling element 204; the first refrigerant interface of the outdoor heat exchanger 1 is connected with the second throttling element 101, and the second throttling element 101 is connected with the first throttling element 202 and the third throttling element 204; one end of the distribution branch c is connected to the first refrigerant interface of the first indoor heat exchanger 201, and the other end is connected to the first exhaust port 302; in the reheat dehumidification mode of the air conditioner system 100, the second exhaust port 303 is communicated between one end of the distribution branch c and the first refrigerant interface of the first indoor heat exchanger 201, and the second refrigerant interface of the outdoor heat exchanger 1 is communicated between the other end of the distribution branch c and the first exhaust port 302; in the reheat dehumidification mode, the high-temperature and high-pressure gaseous refrigerant discharged from the first and

second discharge ports

302 and 303 of the compressor 3 flows to the reheat circulation path a and the refrigerant dehumidification circulation path b, respectively, the high-temperature and high-pressure gaseous refrigerant flowing to the reheat circulation path a flows to the distribution branch c, the high-temperature and high-pressure gaseous refrigerant flowing to the distribution branch c is mixed with the high-temperature and high-pressure gaseous refrigerant flowing to the refrigerant dehumidification circulation path b, flows to the outdoor heat exchanger 1, is condensed by the outdoor heat exchanger 1, is liquefied into a medium-temperature and high-pressure liquid refrigerant, the medium-temperature and high-pressure liquid refrigerant flows through the second throttling element 101 to be throttled down to become a low-temperature and low-pressure liquid refrigerant, and simultaneously, the high-temperature and high-pressure gaseous refrigerant flowing to the reheat circulation path a flows, flowing to the first indoor heat exchanger 201, at this time, the temperature of the high-temperature high-pressure gaseous refrigerant is higher than the temperature of the air before flowing through the first indoor heat exchanger 201, the high-temperature high-pressure gaseous refrigerant exchanges heat with the indoor air (heat release process), the indoor air is heated and reheated, the high-temperature high-pressure gaseous refrigerant is liquefied to become a medium-temperature high-pressure liquid refrigerant, the medium-temperature high-pressure liquid refrigerant flows through the first throttling element 202 and throttled and depressurized to become a low-temperature low-pressure liquid refrigerant, the low-temperature low-pressure liquid refrigerant flowing out of the outdoor heat exchanger 1 and the first indoor heat exchanger 201 is converged and then flows to the second indoor heat exchanger 203, at this time, the temperature of the low-temperature low-pressure liquid refrigerant is lower than the dew point temperature of the air before flowing through the second indoor heat exchanger 203, the low-temperature low-pressure liquid refrigerant exchanges heat with the indoor air (heat absorption process), the air is subjected to cooling and dehumidifying treatment, vaporized into a gaseous refrigerant, and the gaseous refrigerant flows through the third throttling element 204 for throttling and depressurization and then flows back to the air return port 301 of the compressor 3.

In one embodiment, the air conditioner system 100 includes two switching elements, each having a first interface, a second interface, a third interface, and a fourth interface, the two switching elements including a first switching element 5 and a second switching element 6; in the first switching element 5, a first port thereof is connected to the second exhaust port 303, a second port thereof is connected between one end of the distribution branch c and a first refrigerant port of the first indoor heat exchanger 201, a third port thereof is connected to the return port 301, and a fourth port thereof is connected between the first exhaust port 302 and the other end of the distribution branch c; in the second switching element 6, a first interface thereof is connected between the first exhaust port 302 and the other end of the distribution branch c, a second interface thereof is communicated with a second refrigerant interface of the second indoor heat exchanger 203, a third interface thereof is connected with the return port 301, and a fourth interface thereof is connected with another refrigerant interface of the outdoor heat exchanger 1; the first switching element 5 switches its first interface to communicate with its second interface, its third interface to communicate with its fourth interface, and the second switching element 6 switches its first interface to communicate with its fourth interface, its second interface to communicate with its third interface, and closes a path between the fourth interface of the first switching element 5 and the first interface of the second switching element 6, so that the air conditioner system 100 is in the reheat dehumidification mode; that is, in the reheat dehumidification mode, the high-temperature and high-pressure refrigerant discharged from the first and

second discharge ports

302 and 303 of the compressor 3 flows to the first and

second switching elements

5 and 6, respectively, at this time, the first interface of the first switching element 5 communicates with the second interface thereof, the third interface thereof communicates with the fourth interface thereof, the first interface of the second switching element 6 communicates with the fourth interface thereof, and the second interface thereof communicates with the third interface thereof; at the same time, the fourth interface of the first switching element 5 is disconnected from the first interface of the second switching element 6; the high-temperature and high-pressure gaseous refrigerant flowing to the first switching element 5 is partially flowed to the distribution branch c, the high-temperature and high-pressure gaseous refrigerant flowing to the distribution branch c is merged with the high-temperature and high-pressure gaseous refrigerant flowing to the second switching element 6, and then flows to the outdoor heat exchanger 1, the high-temperature and high-pressure gaseous refrigerant is liquefied into a medium-temperature and high-pressure liquid refrigerant after being condensed by the outdoor heat exchanger 1, the medium-temperature and high-pressure liquid refrigerant is throttled and depressurized by the second throttling element 101 to become a low-temperature and low-pressure liquid refrigerant, meanwhile, the high-temperature and high-pressure gaseous refrigerant flowing to the first switching element 5 is partially flowed to the first indoor heat exchanger 201, at this time, the temperature of the high-temperature and high-pressure gaseous refrigerant is higher than the temperature of the air before flowing to the first indoor heat exchanger 201, the high-temperature and high-pressure gaseous refrigerant exchanges heat with the indoor air (heat release process), the indoor air is subjected to heating and reheating treatment, the high-temperature high-pressure gaseous refrigerant is liquefied into a medium-temperature high-pressure liquid refrigerant, the medium-temperature high-pressure liquid refrigerant flows through the first throttling element 202, throttles and reduces pressure to become a low-temperature low-pressure liquid refrigerant, the low-temperature low-pressure liquid refrigerant flowing out of the outdoor heat exchanger 1 and the first indoor heat exchanger 201 is converged and flows to the second indoor heat exchanger 203, at the moment, the temperature of the low-temperature low-pressure liquid refrigerant is lower than the dew point temperature of the air before flowing through the second indoor heat exchanger 203, the low-temperature low-pressure liquid refrigerant exchanges heat with the indoor air (heat absorption process), the air is subjected to cooling and dehumidifying treatment, the vaporized gas refrigerant is changed into a gaseous refrigerant, the gaseous refrigerant sequentially flows through the second interface and the third interface of the second switching element 6, and from the third interface of the second switching element 6 back to the return air port 301 of the compressor 3.

It should be noted that, the conventional air conditioner system 100 generally has a dehumidification reheat mode, a cooling mode and a heating mode, and a user can adjust the air conditioner to a proper mode according to actual requirements.

In an embodiment, in the first switching element 5, a first interface thereof is switched to communicate with a fourth interface thereof, a second interface thereof is switched to communicate with a third interface thereof, in the second switching element 6, a first interface thereof is switched to communicate with a fourth interface thereof, a second interface thereof is communicated with a third interface thereof, the flow dividing device is closed to close the distribution branch c, and a passage between the fourth interface of the first switching element 5 and the first interface of the second switching element 6 is opened, so that the air conditioner system 100 has a cooling mode; that is, when the air conditioner system 100 is in the cooling mode, the outdoor heat exchanger 1 is formed as a condenser, the first indoor heat exchanger 201 and the second indoor heat exchanger 203 are formed as evaporators, the first port of the first switching element 5 is communicated with the fourth port thereof, the second port thereof is communicated with the third port thereof, the first port of the second switching element 6 is communicated with the fourth port thereof, the second port thereof is communicated with the third port thereof, the flow dividing means is closed, the high-temperature and high-pressure gaseous refrigerant discharged from the first exhaust port 302 and the second exhaust port 303 of the compressor 3 flows to the first switching element 5 and the second switching element 6, respectively, and flows to the outdoor heat exchanger 1 after merging, the high-temperature and high-pressure gaseous refrigerant flows through the outdoor heat exchanger 1, and performs heat exchange (heat release process) with outdoor air, the liquefied gas-liquid mixture (liquid-rich) becomes a gas-liquid mixture (liquid-rich) with medium temperature and high pressure, the gas-liquid mixture (liquid-rich) with medium temperature and high pressure is throttled and depressurized by the second throttling element 101, the depressurized gas-liquid mixture (liquid-rich) with low temperature and low pressure is flowed through the first throttling element 202 and the third throttling element 204 before flowing to the first indoor heat exchanger 201 and the second indoor heat exchanger 203 respectively, the gas-liquid mixture (liquid-rich) with low temperature and low pressure is throttled and depressurized further at the first throttling element 202 and the third throttling element 204, so that the gas-liquid mixture (liquid-rich) with low temperature and low pressure becomes a low-temperature and low-pressure liquid refrigerant as much as possible, the low-temperature low-pressure liquid refrigerant respectively flows through the first indoor heat exchanger 201 and the second indoor heat exchanger 203, and is vaporized to be low-pressure gaseous refrigerant after evaporating and absorbing heat, at this time, the fan blows cold air into the room to cool the room, at this time, the second interface of the first switching element 5 is communicated with the third interface thereof, the second interface of the second switching element 6 is communicated with the third interface thereof, the low-pressure gaseous refrigerant flowing out of the first indoor heat exchanger 201 flows to the second interface of the first switching element 5, the third interface flowing through the first switching element 5 flows back to the air return port 301 of the compressor 3, the low-pressure gaseous refrigerant flowing out of the second indoor heat exchanger 203 flows to the second interface of the second switching element 6, and the third interface flowing through the second switching element 6 flows back to the air return port 301 of the compressor 3.

In an embodiment, in the first switching element 5, a first interface thereof is switched to communicate with a second interface thereof, a third interface thereof is switched to communicate with a fourth interface thereof, in the second switching element 6, a first interface thereof is switched to communicate with a second interface thereof, a third interface thereof is communicated with a fourth interface thereof, the flow dividing device is opened to open the distribution branch c, and a passage between the fourth interface of the first switching element 5 and the first interface of the second switching element 6 is closed, so that the air conditioner system 100 has a heating mode; that is, when the air conditioner system 100 is in the cooling mode, the first indoor heat exchanger 201 and the second indoor heat exchanger 203 are formed as condensers, the outdoor heat exchanger 1 is formed as an evaporator, the first port of the first switching unit is communicated with the second port thereof, the third port thereof is communicated with the fourth port thereof, the first port of the second switching unit is communicated with the second port thereof, the third port thereof is communicated with the fourth port thereof, the fourth port of the first switching element 5 is disconnected from the first port of the second switching element 6, the flow dividing means is opened, the high-temperature and high-pressure gaseous refrigerant discharged from the first exhaust port 302 and the second exhaust port 303 of the compressor 3 flows to the first switching element 5 and the second switching element 6, respectively, the high-temperature and high-pressure gaseous refrigerant flowing to the first switching element 5 flows to the first indoor heat exchanger 201 and the distribution branch c respectively, the high-temperature and high-pressure gaseous refrigerant flowing to the second switching element 6 merges with the high-temperature and high-pressure gaseous refrigerant on the distribution branch c and flows to the second indoor heat exchanger 203, the high-temperature and high-pressure gaseous refrigerant flows through the first indoor heat exchanger 201 and the second indoor heat exchanger 203, and performs heat exchange (heat release process) with indoor air, liquefaction becomes a medium-temperature and high-pressure liquid refrigerant, at this time, a fan blows warm air into the room, heats the room, the medium-temperature and high-pressure liquid refrigerant flowing out of the first indoor heat exchanger 201 and the second indoor heat exchanger 203 respectively passes through the first throttling element 202 and the third throttling element 204 to be liquefied and depressurized, becomes a low-temperature and low-pressure gas-liquid mixture (liquid is more), the two branched low-temperature low-pressure gas-liquid mixtures (liquid-rich) after throttling and depressurization are converged and then flow to the second throttling element 101, the low-temperature low-pressure gas-liquid mixtures (liquid-rich) are throttled and depressurized further at the second throttling element 101, so that the low-temperature low-pressure gas-liquid mixtures (liquid-rich) become low-temperature low-pressure liquid refrigerants as much as possible, the low-temperature low-pressure liquid refrigerants flow to the outdoor heat exchanger 1, and after evaporating and absorbing heat through the outdoor heat exchanger 1, the low-temperature low-pressure liquid refrigerants are vaporized and become low-temperature gaseous refrigerants, and the low-temperature gaseous refrigerants flowing out of the outdoor heat exchanger 1 flow through a fourth interface and a third interface of the second switching element 6 in sequence and flow back to the air return port 301 of the compressor 3 from the third interface.

It should be noted that the specific forms of the first switching element 5 and the second switching element 6 are not limited in the present utility model, and in this embodiment, the first switching element 5 is configured as a four-way valve and/or the second switching element 6 is configured as a four-way valve; through setting up two cross valves, with outdoor heat exchanger 1 first throttling element 202 second throttling element 101 indoor heat exchange subassembly 2 and form two mutually independent refrigerant circulation flow paths between the compressor 3, thereby make air conditioner system 100 can realize two independent high pressure control, and then to indoor temperature control under the reheat dehumidification mode is more accurate.

The electromagnetic valve 7 is arranged on a passage between the fourth interface of the first switching element 5 and the first interface of the second switching element 6, and the electromagnetic valve 7 is used for adjusting the on-off between the fourth interface of the first switching element 5 and the first interface of the second switching element 6.

In the present utility model, a first stop valve 8 is disposed between the second port of the first switching element 5 and the first refrigerant port of the first indoor heat exchanger 201; the first stop valve 8 may be a simple switch valve, and the first switch element 5 is connected to the first refrigerant interface of the first indoor heat exchanger 201 by providing the first stop valve 8.

In the present utility model, a second stop valve 9 is disposed between the second interface of the second switching element 6 and the second refrigerant interface of the second indoor heat exchanger 203; the second stop valve 9 may be a simple switch valve, and the second connection port of the second switching element 6 and the second refrigerant connection port of the second indoor heat exchanger 203 are adjusted by setting the second stop valve 9.

In the present utility model, a third stop valve 10 is disposed between the second refrigerant interface of the outdoor heat exchanger 1 and the second refrigerant interface of the second indoor heat exchanger 203; the third stop valve 10 may be a simple on-off valve, and the third stop valve 10 is provided to adjust the on-off state between the second refrigerant interface of the outdoor heat exchanger 1 and the second refrigerant interface of the second indoor heat exchanger 203.

It should be noted that the above three technical features may be alternatively set, or may be set simultaneously, and specifically, in this embodiment, the above three technical features are set simultaneously, that is, a first stop valve 8 is disposed between the second interface of the first switching element 5 and the first refrigerant interface of the first indoor heat exchanger 201; a second stop valve 9 is arranged between the second interface of the second switching element 6 and the second refrigerant interface of the second indoor heat exchanger 203; a third stop valve 10 is arranged between the second refrigerant interface of the outdoor heat exchanger 1 and the second refrigerant interface of the second indoor heat exchanger 203; the first stop valve 8, the second stop valve 9 and the third stop valve 10 may be configured as simple switch valves, so as to correspondingly adjust the on-off state between the first switch element 5 and the first refrigerant interface of the first indoor heat exchanger 201, between the second interface of the second switch element 6 and the second refrigerant interface of the second indoor heat exchanger 203, and between the second refrigerant interface of the outdoor heat exchanger 1 and the second refrigerant interface of the second indoor heat exchanger 203.

The present utility model is not limited to the specific form of the first stop valve 8, the second stop valve 9, and the third stop valve 10, and in this embodiment, in order to further improve the utility of the first stop valve 8, the second stop valve 9, and the third stop valve 10, the first stop valve 8 is set as a high-low pressure stop valve; setting the second stop valve 9 as a gas pipeline stop valve; the third shut-off valve 10 is provided as a liquid line shut-off valve.

The compressor 3 (compressor) is a driven fluid machine that lifts low-pressure gas to high-pressure gas, and is a heart of a refrigeration system. The low-temperature low-pressure gaseous refrigerant is sucked from the air return port 301, the piston is driven to compress the low-temperature low-pressure gaseous refrigerant by the operation of the motor, and then the high-temperature high-pressure gaseous refrigerant is discharged to the air outlet to provide power for the refrigeration cycle, so that the refrigeration cycle of compression, condensation (heat release), expansion and evaporation (heat absorption) is realized, and in the embodiment, the refrigerant flowing back to the air return port 301 cannot be guaranteed to be completely gaseous in the reheating dehumidification mode, the refrigeration mode or the heating mode, and when liquid refrigerant flows into the compressor 3, the interior of the compressor 3 is damaged due to corrosion and oxidation; meanwhile, since the liquid refrigerant is not compressed, the liquid refrigerant occupies the internal space of the compressor 3, thereby reducing the power efficiency of the compressor 3; therefore, in the present embodiment, a gas-liquid separator 11 is provided at the return air port 301 of the compressor 3; the gas-liquid separator 11 is provided in the return air port 301 of the compressor 3 to reduce the liquid contained in the gaseous refrigerant entering the compressor 3, so that the damage of the inside of the compressor 3 due to corrosion and oxidation can be avoided, and the power efficiency of the compressor 3 can be improved.

In one embodiment, the first heat exchanger and the second heat exchanger form a heat exchanger group, and a plurality of heat exchanger groups are arranged; by providing a plurality of heat exchanger groups, the operating efficiency of the air conditioner system 100 is improved.

In one embodiment, the air conditioner system 100 further includes a third indoor heat exchanger 205, and the third indoor heat exchanger 205 is disposed in parallel with the second indoor heat exchanger 203; in the reheat dehumidification mode, the third indoor heat exchanger 205 is formed as a dehumidification heat exchanger, and two portions of low-temperature low-pressure liquid refrigerant flowing out of the first indoor heat exchanger 201 and the outdoor heat exchanger 1 are respectively merged, and are further throttled and depressurized by the third throttling element 204 and the fourth throttling element 206 before flowing to the second indoor heat exchanger 203 and the third indoor heat exchanger 205, so as to be further changed into low-temperature low-pressure liquid refrigerant, and respectively flow to the second indoor heat exchanger 203 and the third indoor heat exchanger 205 to perform heat exchange (heat absorption process) with indoor air, so that the air is subjected to cooling and dehumidification treatment; in the cooling mode, the third indoor heat exchanger 205 is formed as an evaporator, the low-temperature low-pressure liquid refrigerant flowing out of the outdoor heat exchanger 1 flows through the first throttling element 202, the third throttling element 204 and the fourth throttling element 206 respectively, is throttled and depressurized, flows to the first indoor heat exchanger 201, the second indoor heat exchanger 203 and the third indoor heat exchanger 205 respectively, and is vaporized into low-pressure gaseous refrigerant after evaporating and absorbing heat, and at the moment, the fan blows cool air into the room to cool the room; in the heating mode, the third indoor heat exchanger 205 is formed as a condenser, and a high-temperature and high-pressure gaseous refrigerant flows through the first indoor heat exchanger 201, the second indoor heat exchanger 203 and the third indoor heat exchanger 205, and exchanges heat with indoor air (heat release process), and is liquefied into a medium-temperature and high-pressure liquid refrigerant, and at this time, the fan blows out warm air into the room to heat and raise the temperature of the room.

Specifically, a fourth throttling element 206 is disposed at the first refrigerant interface of the third indoor heat exchanger 205; the fourth throttling element 206 can adjust the refrigerant pressure at the first refrigerant interface of the third indoor heat exchanger 205.

In the present utility model, the air conditioner system 100 further includes an outdoor fan 12, where the outdoor fan 12 is disposed corresponding to the outdoor heat exchanger 1, and the heat dissipation capability of the outdoor heat exchanger 1 is improved by using the outdoor fan 12 in this scheme.

The foregoing description is only of alternative embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the specification and drawings of the present utility model or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. An air conditioner system, comprising:

2. The air conditioner system as set forth in claim 1, wherein said flow regulating means comprises a first electronic expansion valve.

3. The air conditioner system as set forth in claim 1, wherein each of said indoor heat exchangers has a first refrigerant interface and a second refrigerant interface, said second refrigerant interface of said first indoor heat exchanger being in communication with said first refrigerant interface of said second indoor heat exchanger, said first throttling element being disposed at said second refrigerant interface of said first indoor heat exchanger, said first refrigerant interface of said second indoor heat exchanger being provided with a third throttling element;

4. The air conditioner system as set forth in claim 1, wherein said air conditioner system includes a first switching element and a second switching element, each of said switching elements having a first interface, a second interface, a third interface, and a fourth interface;

The first port of the second switching element is connected between the first exhaust port and the other end of the distribution branch, the second port of the second switching element is communicated with the second refrigerant port of the second indoor heat exchanger, the third port of the second switching element is connected with the return port, and the fourth port of the second switching element is connected with the second refrigerant port of the outdoor heat exchanger;

5. The air conditioner system as set forth in claim 4, wherein said first switching element switches its first interface to communicate with its fourth interface, its second interface to communicate with its third interface, said second switching element switches its first interface to communicate with its fourth interface, its second interface to communicate with its third interface, said flow regulating device is closed to close said distribution branch, and a passage between said fourth interface of said first switching element and said first interface of said second switching element is opened to enable said air conditioner system to have a cooling mode.

6. The air conditioner system as set forth in claim 4, wherein said first switching element switches its first interface to communicate with its second interface and its third interface to communicate with its fourth interface, said second switching element switches its first interface to communicate with its second interface and its third interface to communicate with its fourth interface, said flow regulating device is turned on to turn on said distribution branch, and a passage between said fourth interface of said first switching element and said first interface of said second switching element is turned off so that said air conditioner system has a heating mode.

7. The air conditioner system as set forth in claim 4, wherein a solenoid valve is provided in a passage between the fourth port of the first switching element and the first port of the second switching element.

8. The air conditioner system as set forth in claim 4, wherein a first shut-off valve is provided between said second port of said first switching element and said first refrigerant port of said first indoor heat exchanger; and/or the number of the groups of groups,

9. The air conditioner system as set forth in claim 1, wherein a gas-liquid separator is provided at a return air port of said compressor.

10. The air conditioner system as set forth in claim 1, wherein said first indoor heat exchanger and said second indoor heat exchanger are formed with a heat exchanger group, said heat exchanger group being provided in plurality.

11. The air conditioner system as set forth in claim 1 further comprising a third indoor heat exchanger disposed in parallel with said second indoor heat exchanger.

12. The air conditioner system as set forth in claim 11, wherein a fourth throttling element is provided at a first refrigerant interface of said third indoor heat exchanger.

13. The air conditioner system as set forth in claim 1, further comprising an outdoor fan disposed in correspondence with said outdoor heat exchanger.