CN212657796U

CN212657796U - Air conditioner

Info

Publication number: CN212657796U
Application number: CN202021310094.XU
Authority: CN
Inventors: 邱锡荣
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-03-05
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses an air conditioner, air conditioner includes: a compressor; a reversing device; a first heat exchanger; a second heat exchanger; the throttling device is connected between the other end of the first heat exchanger and the other end of the second heat exchanger; and the unloading device is closed when the pressure in the air conditioner is lower than a preset pressure, the unloading device is opened when the pressure in the air conditioner reaches the preset pressure, and at least one part of the refrigerant in the air conditioner is suitable for flowing through at least one unloading element. According to the utility model discloses an air conditioner can satisfy the uninstallation demand under the different pressure, reduces throttling arrangement's internal resistance, reduces the pressure of air conditioner, guarantees the normal operating of air conditioner, and simple structure, and the cost is lower.

Description

Air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioner technique and specifically relates to an air conditioner is related to.

Background

When the air conditioner operates in a high temperature environment or dust on a heat exchanger is large, a refrigeration system of the air conditioner easily generates high pressure, so that overload phenomena such as overcurrent or overheating occur on a compressor. In the related art, to unload the air conditioner, an overload protection branch is generally provided, and a group of capillary tubes is generally provided in the overload protection branch. However, the overload protection branch cannot meet the unloading requirements under different pressures, and the normal operation of the air conditioner cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an air conditioner, the uninstallation demand under the different pressure can be satisfied to the air conditioner to guarantee the normal operating of air conditioner.

According to the utility model discloses air conditioner, include: a compressor having an air inlet and an air outlet; the reversing device comprises a first interface, a second interface, a third interface and a fourth interface, the first interface is connected with the air outlet, the third interface is connected with the air inlet, and when one of the first interface and the third interface is communicated with one of the second interface and the fourth interface, the other of the first interface and the third interface is communicated with the other of the second interface and the fourth interface; one end of the first heat exchanger is connected with the fourth interface; one end of the second heat exchanger is connected with the second interface; at least one throttling device connected between the other end of the first heat exchanger and the other end of the second heat exchanger; an unloading device, one end of the unloading device is connected with the other end of the first heat exchanger, a plurality of unloading elements connected in parallel are connected between the other end of the unloading device and the other end of the second heat exchanger, the unloading device is closed when the pressure in the air conditioner is smaller than a preset pressure, the unloading device is opened when the pressure in the air conditioner reaches the preset pressure, and at least one part of the refrigerant in the air conditioner is suitable for flowing through at least one of the plurality of unloading elements.

According to the utility model discloses the air conditioner, one end through making the uninstallation device links to each other with the above-mentioned other end of first heat exchanger, be connected with a plurality of uninstallation components of parallel connection between the other end of uninstallation device and the above-mentioned other end of second heat exchanger, and uninstallation device closes when pressure in the air conditioner is less than predetermined pressure, uninstallation device opens and at least some of the refrigerant in the air conditioner is suitable for flowing through at least one among a plurality of uninstallation components when pressure in the air conditioner reaches predetermined pressure, the uninstallation component's that the refrigerant flows through quantity can be controlled according to the pressure size of air conditioner, thereby satisfy the uninstallation demand under the different pressure, reduce throttling arrangement's internal resistance, reduce the pressure of air conditioner, guarantee the normal operating of air conditioner, moreover, and the steam generator is simple in structure, the cost is lower.

According to some embodiments of the present invention, the other end of the first heat exchanger and the one end of the unloading device are connected in series with a first one-way device for guiding a refrigerant flowing through the first heat exchanger unidirectionally to the unloading device.

According to some embodiments of the invention, a second one-way device is connected in series between one end of the plurality of unloading elements remote from the unloading device and the other end of the second heat exchanger, the second one-way device being adapted to unidirectionally direct refrigerant flowing through at least one of the unloading elements towards the second heat exchanger.

According to some embodiments of the present invention, the air conditioner further comprises: a first branch, one end of the first branch is connected between the other end of the second heat exchanger and the second unidirectional device, and the other end of the first branch is connected between the first unidirectional device and the one end of the unloading device; one end of the second branch is connected between one end, far away from the unloading device, of the unloading elements and the second one-way device, and the other end of the second branch is connected between the other end of the first heat exchanger and the first one-way device.

According to some embodiments of the present invention, a third one-way device is connected in series to the first branch, the third one-way device being configured to unidirectionally guide the refrigerant flowing through the second heat exchanger to the unloading device; and a fourth one-way device is connected in series on the second branch and is used for unidirectionally guiding the refrigerant flowing through at least one unloading element to the first heat exchanger.

According to some embodiments of the present invention, the first one-way device, the second one-way device, the third one-way device and the fourth one-way device each comprise a one-way valve.

According to some embodiments of the invention, the unloading device is closed when the pressure inside the air conditioner is less than a first predetermined pressure; when the pressure in the air conditioner reaches the first predetermined pressure, the unloading device is opened, and a part of the refrigerant in the air conditioner flows through one of the unloading elements; when the pressure in the air conditioner reaches a second predetermined pressure, the unloading device is opened, and a part of the refrigerant in the air conditioner flows through at least two of the unloading elements, wherein the second predetermined pressure is greater than the first predetermined pressure.

According to some embodiments of the invention, the number of unloading elements is at least three; when the pressure of the air conditioner reaches the second preset pressure, the unloading device is opened, and a part of the refrigerant in the air conditioner flows through two of the unloading elements; when the pressure of the air conditioner reaches a third predetermined pressure, which is greater than the first predetermined pressure and greater than the second predetermined pressure, the unloading device is opened, and a portion of the refrigerant in the air conditioner flows through at least three of the plurality of unloading elements.

According to some embodiments of the invention, the unloading device comprises: an unloading housing formed with an unloading inlet connected to the other end of the first heat exchanger and a plurality of unloading outlets respectively connected to the plurality of unloading members, an unloading inlet cavity and a plurality of unloading outlet cavities are arranged in the unloading shell, the unloading inlet cavity is communicated with the unloading inlet, a communication port communicated with the unloading inlet cavity is formed on each unloading outlet cavity, the unloading outlets are communicated with the corresponding unloading outlet cavities, each unloading outlet cavity is internally provided with a movable partition which constantly separates the communication port from the corresponding unloading outlet, at least one of the partitions communicates the communication port with the corresponding unloading outlet port when the pressure in the air conditioner reaches the predetermined pressure to cause at least a portion of the refrigerant in the air conditioner to flow through the corresponding at least one unloading member.

According to some embodiments of the utility model, the throttling arrangement is two, two parallel connection has a fifth unidirectional device on one of them throttling arrangement, the fifth unidirectional device is used for leading the refrigerant that flows through first heat exchanger unidirectionally the second heat exchanger.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view illustrating an operation principle of an air conditioner in a cooling mode according to an embodiment of the present invention;

fig. 2 is a schematic view of the operation principle of the air conditioner in the heating mode according to the embodiment of the present invention;

fig. 3 is a schematic structural view of an unloading device of an air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic flow diagram of a refrigerant in an unloader apparatus according to an embodiment of the present invention;

fig. 5 is a schematic flow diagram of a refrigerant in an unloader apparatus according to another embodiment of the present invention;

fig. 6 is a schematic flow diagram of a refrigerant in an unloader according to yet another embodiment of the present invention.

Reference numerals:

100: an air conditioner;

1: a compressor; 11: an air inlet; 12: an air outlet; 2: a reversing device;

21: a first interface; 22: a second interface; 23: a third interface; 24: a fourth interface;

3: a first heat exchanger; 31: a first unidirectional device; 32: a first heat exchange fan;

4: a second heat exchanger; 41: a second heat exchange fan; 5: a throttling device;

51: a first throttling device; 511: a fifth unidirectional device; 52: a second throttling device;

6: an unloading device; 61: unloading the element; 611: a second unidirectional device;

62: unloading the shell; 621: an unloading inlet; 622: an unloading outlet;

623: unloading into the chamber; 624: unloading the discharge chamber; 6241: a communication port;

6242: a separator; 63: a spring; 7: a first branch; 71: a third unidirectional device;

8: a second branch circuit; 81: a fourth unidirectional device; 9: a gas-liquid separator.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, 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 application.

The air conditioner 100 in the present application performs a refrigeration cycle of the air conditioner 100 by using the compressor 1, the condenser, the expansion valve, and the evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor 1 compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 1. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner 100 can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner 100 refers to a portion of the refrigeration cycle including the compressor 1 and the outdoor heat exchanger, the indoor unit of the air conditioner 100 includes the indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner 100 is used as a heater for a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner 100 is used as a cooler for a cooling mode.

An air conditioner 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 6.

As shown in fig. 1 and 2, an air conditioner 100 according to an embodiment of the present invention includes a compressor 1, a reversing device 2, a first heat exchanger 3, a second heat exchanger 4, an unloading device 6, and at least one throttling device 5.

The compressor 1 has an air inlet 11 and an air outlet 12. The compressor 1 compresses a low-temperature and low-pressure refrigerant, which is introduced from an inlet 11, into a high-temperature and high-pressure refrigerant, and discharges the high-temperature and high-pressure refrigerant from an outlet 12.

The reversing device 2 comprises a first port 21, a second port 22, a third port 23 and a fourth port 24, the first port 21 of the reversing device 2 is connected with the air outlet 12 of the compressor 1, the third port 23 is connected with the air inlet 11, and when one of the first port 21 and the third port 23 is communicated with one of the second port 22 and the fourth port 24, the other of the first port 21 and the third port 23 is communicated with the other of the second port 22 and the fourth port 24.

For example, in the example of fig. 1 and 2, the first interface 21, the second interface 22, the third interface 23, and the fourth interface 24 are sequentially arranged in a clockwise direction. When the first port 21 is communicated with the second port 22, the third port 23 is communicated with the fourth port 24; when the first port 21 communicates with the fourth port 24, the third port 23 communicates with the second port 22. Thus, the reversing device 2 thus provided can change the flow direction of the refrigerant to perform a cooling or heating function of the air conditioner 100. Alternatively, the reversing device 2 may be a four-way reversing valve. But is not limited thereto.

One end (e.g., the upper end in fig. 1 and 2) of the first heat exchanger 3 is connected to the fourth port 24, one end (e.g., the upper end in fig. 1 and 2) of the second heat exchanger 4 is connected to the second port 22, and the throttle device 5 is connected between the other end (e.g., the lower end in fig. 1 and 2) of the first heat exchanger 3 and the other end (e.g., the lower end in fig. 1 and 2) of the second heat exchanger 4. In this way, the throttling device 5 can be used for controlling the flow rate of the refrigerant, and plays roles of throttling and pressure reduction. For example, the throttle device 5 may be an expansion valve, a capillary tube, or the like.

One end (e.g., the right end in fig. 1 and 2) of the unloading device 6 is connected to the above-mentioned other end of the first heat exchanger 3, and a plurality of unloading members connected in parallel are connected between the other end (e.g., the left end in fig. 1 and 2) of the unloading device 6 and the above-mentioned other end of the second heat exchanger 4. In the description of the present invention, "a plurality" means two or more.

The unloading means 6 is closed when the pressure in the air conditioner 100 is less than the predetermined pressure, the unloading means 6 is opened when the pressure in the air conditioner 100 reaches the predetermined pressure and at least a portion of the refrigerant in the air conditioner 100 is adapted to flow through at least one of the plurality of unloading members 61.

Referring to fig. 1, when the pressure in the air conditioner 100 is less than the predetermined pressure and the air conditioner 100 operates in the cooling mode, the first port 21 of the direction changing device 2 communicates with the fourth port 24 and the third port 23 communicates with the second port 22. After being discharged from the air outlet 12 of the compressor 1, the high-temperature and high-pressure gaseous refrigerant flows through the first interface 21 and the fourth interface 24 of the reversing device 2 in sequence and flows into the first heat exchanger 3, heat exchange is performed in the first heat exchanger 3, the gaseous refrigerant is condensed into liquid refrigerant, the liquid refrigerant flows out from the other end of the first heat exchanger 3, throttling and pressure reduction are performed through the throttling device 5, the throttled low-temperature and low-pressure refrigerant enters the second heat exchanger 4 for heat exchange, heat absorption and evaporation are changed into gas, then the gas flows through the second interface 22 and the third interface 23 of the reversing device 2 in sequence, and finally the gas flows back to the compressor 1 from the air inlet 11 of the compressor 1.

When the pressure in the air conditioner 100 reaches a predetermined pressure, as shown in fig. 1, after the liquid refrigerant flows out from the other end of the first heat exchanger 3, a part of the liquid refrigerant may flow through the throttling device 5 for throttling, another part of the liquid refrigerant may flow to the unloading device 6, then flow from the unloading device 6 to at least one of the unloading elements 61, enter the second heat exchanger 4 for heat exchange after throttling in the unloading element 61, then flow through the second connection 22 and the third connection 23 of the reversing device 2, and finally flow back to the compressor 1 from the air inlet 11 of the compressor 1. Thus, when the air conditioner 100 is in the cooling mode and the pressure in the air conditioner 100 reaches the predetermined pressure, the unloading amount of the refrigerant under different pressures can be adjusted, for example, the refrigerant flows through the unloading elements 61 with a larger amount when the pressure is larger, and the refrigerant flows through the unloading elements 61 with a smaller amount when the pressure is smaller, so that the unloading requirements under different pressures are met, the internal resistance of the throttling device 5 is reduced, the pressure of the air conditioner 100 is reduced, and the normal operation of the air conditioner 100 is ensured.

According to the embodiment of the present invention, the air conditioner 100 is connected to the other end of the first heat exchanger 3 through the one end of the unloading device 6, the other end of the unloading device 6 is connected to the other end of the second heat exchanger 4, and the unloading device 6 is closed when the pressure in the air conditioner 100 is less than the predetermined pressure, the unloading device 6 is opened when the pressure in the air conditioner 100 reaches the predetermined pressure, and at least one part of the refrigerant in the air conditioner 100 is suitable for flowing through at least one of the unloading elements 61, the number of the unloading elements 61 through which the refrigerant flows can be controlled according to the pressure of the air conditioner 100, thereby satisfying the unloading requirements under different pressures, reducing the internal resistance of the throttling device 5, reducing the pressure of the air conditioner 100, ensuring the normal operation of the air conditioner 100, and having a simple structure and a low cost.

In some embodiments of the present invention, referring to fig. 1 and 2, a first one-way device 31 is connected in series between the other end of the first heat exchanger 3 and the one end of the unloading device 6, and the first one-way device 31 is used for guiding the refrigerant flowing through the first heat exchanger 3 to the unloading device 6 in one way.

For example, referring to fig. 1 and 2, when the air conditioner 100 operates in the cooling mode, if the pressure inside the air conditioner 100 reaches a predetermined pressure, a portion of the refrigerant may flow from the above-mentioned other end of the first heat exchanger 3 to the unloading device 6 through the first check device 31 by the first check device 31, so as to reduce the internal resistance of the throttling device 5 and reduce the pressure of the air conditioner 100. The refrigerant of the unloading unit 6 cannot flow to the first heat exchanger 3 through the first non-return means 31. Therefore, by arranging the first check device 31, the refrigerant can only flow in one direction, and the refrigerant can be discharged by flowing through the discharging element 61 when the pressure in the air conditioner 100 reaches the predetermined pressure in the cooling mode, so as to reduce the pressure of the air conditioner 100 and ensure the normal operation of the air conditioner 100.

In some embodiments of the present invention, with reference to fig. 1 and 2, a second one-way device 611 is connected in series between one end of the plurality of unloading elements 61, which is remote from the unloading device 6, and the other end of the second heat exchanger 4, the second one-way device 611 being used to unidirectionally guide the refrigerant flowing through at least one unloading element 61 to the second heat exchanger 4.

For example, in the example of fig. 1 and 2, when the air conditioner 100 operates in the cooling mode, if the pressure in the air conditioner 100 reaches a predetermined pressure, a part of the refrigerant flows from the above-mentioned other end of the first heat exchanger 3 to the unloading device 6 through the first check device 31 by the first check device 31, is unloaded by at least one of the plurality of unloading members 61, and flows from the above-mentioned other end of the second heat exchanger 4 to the second heat exchanger 4 for heat exchange through the second check device 611 by the second check device 611. The refrigerant of the second heat exchanger 4 cannot flow to the unloading element 61 through the second check means 611. Therefore, by providing the second one-way device 611, the refrigerant can only flow in one direction, and the refrigerant unloaded by the unloading element 61 can flow to the second heat exchanger 4 for heat exchange, so that the refrigerating capacity of the air conditioner 100 can be ensured.

In a further embodiment of the present invention, as shown in fig. 1 and 2, the air conditioner 100 further includes a first branch 7 and a second branch 8.

Specifically, one end (e.g., the left end in fig. 1 and 2) of the first branch 7 is connected between the above-indicated other end of the second heat exchanger 4 and the second check means 611, and the other end (e.g., the right end in fig. 1 and 2) of the first branch 7 is connected between the first check means 31 and the above-indicated one end of the unloading means 6. One end (e.g., the left end in fig. 1 and 2) of the second branch 8 is connected between one end of the plurality of unloading elements 61 remote from the unloading device 6 and the second check device 611, and the other end (e.g., the right end in fig. 1 and 2) of the second branch 8 is connected between the above-mentioned other end of the first heat exchanger 3 and the first check device 31.

For example, referring to fig. 2, when the air conditioner 100 operates in the heating mode, if the pressure in the air conditioner 100 reaches a predetermined pressure, a portion of the refrigerant after passing through the second heat exchanger 4 may pass through the first branch 7 from the above-mentioned other end of the second heat exchanger 4 and flow along the flow path b2 to the unloading device 6, so that the refrigerant may be unloaded through at least one of the unloading members 61. The unloaded refrigerant flows into the first heat exchanger 3 from the other end of the first heat exchanger 3 along the second branch line 8 to exchange heat. Thus, by providing the first branch 7 and the second branch 8, it is ensured that the refrigerant can be discharged through the discharging element 61 when the pressure in the air conditioner 100 reaches the predetermined pressure in the heating mode, so as to reduce the pressure of the air conditioner 100 and ensure the heating capacity of the air conditioner 100. Moreover, the first branch 7 and the second branch 8 arranged in this way enable the air conditioner 100 to adopt the same unloading device 6 and unloading element 61 for unloading under different working conditions, such as a cooling mode or a heating mode, so that the structure of the air conditioner is simplified while the unloading requirements of the air conditioner under different working conditions are met, and the air conditioner only needs to adopt the same unloading system under the cooling mode or the heating mode.

In some embodiments of the present invention, referring to fig. 1 and 2, a third one-way device 71 is connected in series on the first branch 7, and the third one-way device 71 is used for guiding the refrigerant flowing through the second heat exchanger 4 to the unloading device 6 in one way. A fourth non-return means 81 is connected in series with the second branch 8, the fourth non-return means 81 serving to unidirectionally direct the refrigerant flowing through the at least one unloading element 61 towards the first heat exchanger 3.

For example, referring to fig. 1, when the air conditioner 100 operates in the cooling mode, if the pressure in the air conditioner 100 reaches a predetermined pressure, a part of the refrigerant may flow from the other end of the first heat exchanger 3 to the unloading device 6 by the first check device 31, the refrigerant may not flow through the first branch 7 due to the third check device 71, so that the refrigerant may be unloaded by at least one of the unloading members 61, and the pressure of the refrigerant flowing out of the unloading member 61 after throttling by the unloading member 61 is lower than the pressure of the refrigerant at B and a in fig. 1, so that the refrigerant throttled by the unloading member 61 may not flow to B through the third check device 71 on the first branch 7, and may not return to a through the fourth check device 81 on the second branch 8. The refrigerant throttled by the unloading element 61 can only flow to the second heat exchanger 4 through the second one-way device 611 for heat exchange.

Referring to fig. 2, when the air conditioner 100 is in the heating mode, if the pressure in the air conditioner 100 reaches a predetermined pressure, a portion of the refrigerant may flow through the first branch 7 from the other end of the second heat exchanger 4 by the third check device 71, and then flow through the unloading device 6 along the flow path b2 to flow to at least one of the unloading members 61, so that the refrigerant may be unloaded through at least one of the unloading members 61. The refrigerant unloaded by the unloading element 61 flows from the second branch 8 to the first heat exchanger 3 for heat exchange under the action of the fourth check device 81.

Thus, by providing the third one-way device 71 and the fourth one-way device 81, when the pressure in the air conditioner 100 reaches a predetermined pressure, if the air conditioner 100 is in the cooling mode, the refrigerant can directly flow from the first heat exchanger 3 to the unloading device 6, and the unloaded refrigerant can directly flow from the unloading member 61 to the second heat exchanger 4 for heat exchange; if the air conditioner 100 is in the heating mode, the refrigerant can flow through the first branch 7 from the second heat exchanger 4 and flow to the unloading device 6, and the unloaded refrigerant can flow through the second branch 8 and finally flow to the first heat exchanger 3 for heat exchange, so that the air conditioner 100 can be unloaded through the unloading element 61 in the cooling mode or the heating mode, and the cooling capacity and the heating capacity of the air conditioner 100 can be ensured, which is very convenient.

Optionally, the first one-way device 31, the second one-way device 611, the third one-way device 71 and the fourth one-way device 81 may each comprise a one-way valve. With this arrangement, while achieving unidirectional flow of the refrigerant, the first, second, third, and

fourth check devices

31, 611, 71, and 81 are simple in structure and highly versatile, so that the cost of the entire air conditioner 100 can be reduced.

In some embodiments of the present invention, the unloading device 6 is closed when the pressure inside the air conditioner 100 is less than the first predetermined pressure; when the pressure in the air conditioner 100 reaches a first predetermined pressure, the unloading device 6 is opened, and a portion of the refrigerant in the air conditioner 100 flows through one of the plurality of unloading members 61; when the pressure in the air conditioner 100 reaches a second predetermined pressure, which is greater than the first predetermined pressure, the unloading device 6 is opened and a portion of the refrigerant in the air conditioner 100 flows through at least two of the plurality of unloading members 61. With the arrangement, when the pressure of the air conditioner 100 reaches the preset pressure, the quantity of the refrigerant flowing through the unloading elements 61 can be controlled according to the pressure of the air conditioner 100, so that the unloading amount of the refrigerant can be adjusted, the unloading requirements under different pressures can be met, the unloading efficiency can be improved, and the normal operation of the air conditioner 100 can be ensured.

In a further embodiment of the invention, as shown in fig. 1 and 2, the number of unloading elements 61 is at least three. When the pressure of the air conditioner 100 reaches the second predetermined pressure, the unloading device 6 is opened, and a portion of the refrigerant in the air conditioner 100 flows through two of the plurality of unloading members 61; when the pressure of the air conditioner 100 reaches a third predetermined pressure, which is greater than the first predetermined pressure and greater than the second predetermined pressure, the unloading device 6 is opened, and a portion of the refrigerant in the air conditioner 100 flows through at least three of the plurality of unloading members 61.

For example, three unloading elements 61 are shown in the example of fig. 1 and 2. When the pressure inside the air conditioner 100 is less than the first predetermined pressure, the unloading device 6 is turned off; when the pressure in the air conditioner 100 reaches the first predetermined pressure and is less than the second predetermined pressure, the unloading device 6 is opened, and a part of the refrigerant flows from the unloading device 6 through one of the three unloading elements 61 to be unloaded, so as to ensure that the pressure of the air conditioner 100 is within the normal range value; when the pressure of the air conditioner 100 reaches the second predetermined pressure and is less than the third predetermined pressure, a part of the refrigerant flows from the unloading device 6 through two of the three unloading members 61 to be unloaded, and the cooling capacity of the air conditioner 100 can be ensured while the quick unloading is realized; when the pressure in the air conditioner 100 reaches the third predetermined pressure, a portion of the refrigerant flows from the unloading device 6 through all the unloading members 61 to be unloaded, so that the rapid unloading can be realized to ensure the normal operation of the air conditioner 100.

Therefore, through the arrangement, the number of the refrigerant flowing through the unloading elements 61 can be controlled according to the pressure of the air conditioner 100, so that the unloading amount of the refrigerant can be adjusted, the unloading requirements under different pressures are met, quick unloading is realized, and the normal operation of the air conditioner 100 is ensured.

Three unloading elements 61 are shown in fig. 1 and 2 for illustrative purposes, but it is obvious to a person skilled in the art after reading the technical solution of the present application that the solution can be applied to other numbers of unloading elements 61, which also falls within the scope of the present invention.

In some embodiments of the present invention, referring to fig. 3-5, the unloading device 6 includes an unloading housing 62. Specifically, the unloading housing 62 is formed with an unloading inlet 621 and a plurality of unloading outlets 622, the unloading inlet 621 is connected to the other end of the first heat exchanger 3, the plurality of unloading outlets 622 are respectively connected to the plurality of unloading members 61, the unloading housing 62 is provided therein with an unloading inlet chamber 623 and a plurality of unloading outlet chambers 624, the unloading inlet chamber 623 is communicated with the unloading inlet 621, each unloading outlet chamber 624 is formed with a communication port 6241 communicated with the unloading inlet chamber 623, the unloading outlets 622 are communicated with the corresponding unloading outlet chambers 624, each unloading outlet chamber 624 is provided therein with a movable partition 6242, the partition 6242 constantly separates the communication port 6241 from the corresponding unloading outlet 622, at least one partition 6242 communicates the communication port 6241 with the corresponding unloading outlet 622 when the pressure inside the air conditioner 100 reaches a predetermined pressure to cause at least a portion of the refrigerant inside the air conditioner 100 to flow through the corresponding at least one unloading element 61.

For example, in the example of fig. 3 and 5, the unloading housing 62 has an unloading in chamber 623 and three unloading out chambers 624, each divider 6242 being linearly movable within the corresponding unloading out chamber 624. When the pressure inside the air conditioner 100 is less than the first predetermined pressure, the partition 6242 closes off the communication ports 6241 of the plurality of unloading outlet chambers 624 and the corresponding unloading outlet ports 622; when the pressure inside the air conditioner 100 reaches the first predetermined pressure, one of the three dividing members 6242 moves in a direction away from the unloading inlet chamber 623 to communicate the corresponding communication port 6241 with the unloading outlet 622, so that a portion of the refrigerant can flow from the unloading outlet 622 through the corresponding one of the unloading members 61 for unloading. When the pressure inside the air conditioner 100 reaches the second predetermined pressure, two of the three dividing members 6242 move away from the unloading chamber 623, allowing a portion of the refrigerant to flow from the two unloading outlets 622 through the corresponding unloading elements 61 for unloading. When the pressure inside the air conditioner 100 reaches the third predetermined pressure, all three dividing members 6242 are moved away from the unloading chamber 623, so that a portion of the refrigerant can flow from the three unloading outlets 622 through all the unloading members 61 for unloading, to achieve rapid unloading.

Therefore, whether the communication ports 6241 are communicated with the corresponding unloading outlets 622 or not can be controlled by the partition 6242 according to the pressure of the air conditioner 100, so that the number of the refrigerants passing through the unloading elements 61 can be controlled according to the pressure of the air conditioner 100, the unloading requirements under different pressures are met, and quick unloading is realized. Moreover, the unloading device 6 has simple structure, convenient processing and lower cost.

Optionally, in connection with fig. 3-5, the dividing element 6242 is of a substantially U-shaped configuration, the end of the dividing element 6242 remote from the unloading chamber 623 being provided with a resilient return member, such as a spring 63. So set up, simple structure can realize 6242's automatic re-setting, and the cost is lower.

In some optional embodiments of the present invention, as shown in fig. 1 and fig. 2, there are two throttling devices 5, one of the two throttling devices 5 is connected in parallel with a fifth one-way device 511, and the fifth one-way device 511 is used for guiding the refrigerant flowing through the first heat exchanger 3 to the second heat exchanger 4 in one way.

For example, the two throttling devices 5 may be a first throttling device 51 and a second throttling device 52, respectively, and the fifth one-way device 511 is connected in parallel to the first throttling device 51. When the air conditioner 100 operates in the cooling mode, the refrigerant flows out from the other end of the first heat exchanger 3, flows through the second throttling device 52 and the fifth one-way device 511, and then flows to the second heat exchanger 4 for heat exchange; when the air conditioner 100 operates in the heating mode, the refrigerant flows out of the other end of the second heat exchanger 4, passes through the first throttling device 51 and the second throttling device 52 in sequence, and then flows into the first heat exchanger 3 to exchange heat. Therefore, by arranging the fifth unidirectional device 511, the unloading amount of the refrigerant can be adjusted according to the pressure of the air conditioner 100, so that the unloading requirements of the air conditioner 100 in the cooling mode and the heating mode are met, and the normal operation of the air conditioner 100 is ensured.

An air conditioner 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 5.

As shown in fig. 1, when the air conditioner 100 performs normal cooling, a high-temperature and high-pressure gas refrigerant is discharged from the gas outlet 12 of the compressor 1, passes through the reversing device 2, enters the first heat exchanger 3, i.e., the outdoor heat exchanger, performs heat exchange in the first heat exchanger 3, condenses the gas refrigerant into a liquid refrigerant, and is throttled by the second throttling device 52, e.g., a capillary tube. It should be noted that, because the pressure in the air conditioner 100 is relatively small in the normal cooling state, that is, the pressure at a is smaller than the first predetermined pressure (the minimum unloading pressure of the unloading device 6), and the unloading device 6 is closed, the refrigerant at a does not flow downward through the a3 flow path and the b2 flow path during normal cooling, and the refrigerant is stopped at the unloading device 6; the fourth check device 81, such as a check valve, in the second branch 8 and the third check device 71, such as a check valve, in the first branch 7 prevent the refrigerant during cooling from flowing downward through the fourth check device 81 and the third check device 71, so that the refrigerant flowing out from the point a can only flow out from the flow path a1 in the normal cooling state, and under the action of the fifth check device 511, the refrigerant does not pass through the first throttling device 51, and the throttled low-temperature and low-pressure refrigerant enters the second heat exchanger 4, i.e., the indoor heat exchanger to be subjected to heat exchange, absorb heat and evaporate into gas, and then passes through the reversing device 2 and the gas-liquid separator 9 to return to the compressor 1. Wherein the first heat exchanger 3 may include a first heat exchanging fan 32, and the second heat exchanger 4 may include a second heat exchanging fan 41.

When the ambient temperature of the outdoor heat exchanger is high and the air conditioner pressure reaches the first predetermined pressure but is less than the second predetermined pressure, the discharge temperature and the discharge pressure of the compressor 1 are high, after heat exchange is performed by the first heat exchanger 3, the unloading device 6 is connected to the branch in which one of the three unloading members 61 is located, and part of the refrigerant passes through the flow path b2 and then flows from the unloading device 6 into the branch in which one of the three unloading members 61 is located. Due to the third one-way device 71 and the fourth one-way device 81, the refrigerant flowing out of a in the cooling state does not pass through the second branch passage 8 and the first branch passage 7. After throttling in the unloading element 61, since the refrigerant at D is throttled and depressurized by the unloading element 61, and the refrigerant at a is not throttled and depressurized, the pressure of the refrigerant at D is lower than that of the refrigerant at a, so the refrigerant throttled by the unloading element 61 does not return to a through the fourth one-way device 81 on the second branch 8, and likewise, the refrigerant throttled by the unloading element 61 does not flow to B through the third one-way device 71 on the first branch 7. Therefore, the refrigerant throttled by the unloading element 61 can only flow to the second heat exchanger 4 through the second one-way device 611 for heat exchange, so that the unloading amount of the refrigerant of the air conditioner 100 under different pressures can be adjusted, the internal resistance of the second throttling device 52 is reduced, and the pressure of the air conditioner 100 is reduced.

When the pressure in the air conditioner 100 is between the second predetermined pressure and the third predetermined pressure, the unloading device 6 is connected to the branch where two of the three unloading members 61 are located, thereby ensuring the cooling capacity of the air conditioner 100 while achieving the quick unloading.

When the pressure in the air conditioner 100 reaches the third predetermined pressure, the unloading device 6 is connected to the branch where the three unloading members 61 are located, so that the unloading can be performed quickly, and the air conditioner 100 can be operated well.

Wherein, when the air conditioner 100 operates in the cooling mode, the first predetermined pressure may be 2.35Mpa, the second predetermined pressure may be 2.47Mpa, and the third predetermined pressure may be 2.69Mpa to 2.70Mpa (inclusive). But is not limited thereto.

As shown in fig. 2, C1, C2, and C3 are flow paths of the refrigerant flowing out from the point C in the heating state. Wherein the c2 flow path is the first branch path 7. When the air conditioner 100 heats normally, the high-temperature and high-pressure gas refrigerant is discharged from the gas outlet 12 of the compressor 1, enters the second heat exchanger 4 through the reversing device 2, exchanges heat in the second heat exchanger 4 to condense the gas refrigerant into liquid refrigerant, and then flows through the first throttling device 51 and the second throttling device 52 on the flow path of c1 to be throttled and depressurized. The refrigerant flowing out from the point C in the normal heating state is not throttled, has higher pressure but is less than the first preset pressure (the minimum unloading pressure of the unloading device 6), enters the first heat exchanger 3 for heat exchange, absorbs heat and evaporates into gas, and then returns to the compressor 1 through the reversing device 2 and the gas-liquid separator 9.

When the pressure of the air conditioner 100 rises and reaches the first predetermined pressure, the unloading device 6 is connected to the branch in which one of the three unloading members 61 is located, and part of the refrigerant flows to the unloading device 6 through the first branch 7 and the flow path b2, and then flows from the unloading device 6 to the branch in which the unloading member 61 is located. The refrigerant flowing out of C does not flow to the point D through the flow path C3 nor flows to the point a through the flow path a3 due to the action of the first check member 31 and the second check member 611. The refrigerant at D is throttled and depressurized, and the refrigerant pressure at D is lower than that at C, so the refrigerant throttled by the unloading element 61 does not return to C through the second one-way device 611, and only enters the first heat exchanger 3 through the fourth one-way device 81 for heat exchange, thereby regulating the flow rates of the first throttling device 51 and the second throttling device 52.

When the pressure of the air conditioner 100 is greater than the second predetermined pressure and less than the third predetermined pressure, the unloading device 6 communicates with the branch where two of the three unloading members 61 are located; when the pressure of the air conditioner 100 is greater than the third predetermined pressure, the unloading device 6 communicates with all the branches where the three unloading members 61 are located. To ensure that the air conditioner 100 can operate in a normal pressure range and has a good heating capacity.

Wherein, when the air conditioner 100 operates in the heating mode, the first, second, and third predetermined pressures may be different from the first, second, and third predetermined pressures when the air conditioner 100 operates in the cooling mode.

According to the air conditioner 100 of the embodiment of the present invention, the unloading device 6 and the unloading members 61 can be automatically unloaded. Moreover, by utilizing the characteristics of different refrigerant flow directions during cooling and heating, the unloading requirements during cooling and heating are simultaneously satisfied under the cooperation of the first one-way device 31, the second one-way device 611, the third one-way device 71, the fourth one-way device 81 and the fifth one-way device 511.

Other configurations and operations of the air conditioner 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

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

In the description of the present application, it is to 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; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner, comprising:

a compressor having an air inlet and an air outlet;

the reversing device comprises a first interface, a second interface, a third interface and a fourth interface, the first interface is connected with the air outlet, the third interface is connected with the air inlet, and when one of the first interface and the third interface is communicated with one of the second interface and the fourth interface, the other of the first interface and the third interface is communicated with the other of the second interface and the fourth interface;

one end of the first heat exchanger is connected with the fourth interface;

one end of the second heat exchanger is connected with the second interface;

at least one throttling device connected between the other end of the first heat exchanger and the other end of the second heat exchanger;

an unloading device, one end of the unloading device is connected with the other end of the first heat exchanger, a plurality of unloading elements connected in parallel are connected between the other end of the unloading device and the other end of the second heat exchanger,

the unloading device is closed when the pressure in the air conditioner is less than a predetermined pressure, the unloading device is opened when the pressure in the air conditioner reaches the predetermined pressure and at least a portion of the refrigerant in the air conditioner is adapted to flow through at least one of the plurality of unloading elements.

2. An air conditioner according to claim 1, wherein a first check means is connected in series between said other end of said first heat exchanger and said one end of said unloading means, said first check means serving to unidirectionally direct the refrigerant flowing through said first heat exchanger to said unloading means.

3. An air conditioner according to claim 2, wherein a second one-way means is connected in series between one end of the plurality of said unloading elements remote from said unloading means and said other end of said second heat exchanger, said second one-way means serving to unidirectionally direct refrigerant flowing through at least one of said unloading elements to said second heat exchanger.

4. The air conditioner according to claim 3, further comprising:

a first branch, one end of the first branch is connected between the other end of the second heat exchanger and the second unidirectional device, and the other end of the first branch is connected between the first unidirectional device and the one end of the unloading device;

one end of the second branch is connected between one end, far away from the unloading device, of the unloading elements and the second one-way device, and the other end of the second branch is connected between the other end of the first heat exchanger and the first one-way device.

5. The air conditioner according to claim 4, wherein a third one-way device is connected in series to the first branch path for unidirectionally directing refrigerant flowing through the second heat exchanger to the unloading device;

and a fourth one-way device is connected in series on the second branch and is used for unidirectionally guiding the refrigerant flowing through at least one unloading element to the first heat exchanger.

6. The air conditioner according to claim 5, wherein said first one-way device, said second one-way device, said third one-way device and said fourth one-way device each comprise a one-way valve.

7. The air conditioner according to any one of claims 1 to 5,

when the pressure in the air conditioner is smaller than a first preset pressure, the unloading device is closed;

when the pressure in the air conditioner reaches the first predetermined pressure, the unloading device is opened, and a part of the refrigerant in the air conditioner flows through one of the unloading elements;

when the pressure in the air conditioner reaches a second predetermined pressure, the unloading device is opened, and a part of the refrigerant in the air conditioner flows through at least two of the unloading elements, wherein the second predetermined pressure is greater than the first predetermined pressure.

8. The air conditioner according to claim 7, wherein the discharging member is at least three;

when the pressure of the air conditioner reaches the second preset pressure, the unloading device is opened, and a part of the refrigerant in the air conditioner flows through two of the unloading elements;

when the pressure of the air conditioner reaches a third predetermined pressure, which is greater than the first predetermined pressure and greater than the second predetermined pressure, the unloading device is opened, and a portion of the refrigerant in the air conditioner flows through at least three of the plurality of unloading elements.

9. The air conditioner according to any one of claims 1 to 5, wherein the unloading means comprises:

an unloading housing formed with an unloading inlet connected to the other end of the first heat exchanger and a plurality of unloading outlets respectively connected to the plurality of unloading members, an unloading inlet cavity and a plurality of unloading outlet cavities are arranged in the unloading shell, the unloading inlet cavity is communicated with the unloading inlet, a communication port communicated with the unloading inlet cavity is formed on each unloading outlet cavity, the unloading outlets are communicated with the corresponding unloading outlet cavities, each unloading outlet cavity is internally provided with a movable partition which constantly separates the communication port from the corresponding unloading outlet, at least one of the partitions communicates the communication port with the corresponding unloading outlet port when the pressure in the air conditioner reaches the predetermined pressure to cause at least a portion of the refrigerant in the air conditioner to flow through the corresponding at least one unloading member.

10. The air conditioner according to any one of claims 1 to 5, wherein there are two of said throttling means, and a fifth check means is connected in parallel to one of said two throttling means, said fifth check means serving to unidirectionally guide the refrigerant flowing through said first heat exchanger to said second heat exchanger.