CN217178732U - Air conditioner - Google Patents

Abstract

The utility model discloses an air conditioner, air conditioner includes: an outdoor heat exchanger; the outdoor heat exchanger comprises a refrigeration flow direction pipe, a heating flow direction pipe and a heat exchanger body, wherein the heat exchanger body is connected with the refrigeration flow direction pipe and the heating flow direction pipe, the refrigeration flow direction pipe and the heating flow direction pipe are used for guiding the flow of a refrigerant, and the heat exchanger body is used for carrying out heat exchange on the refrigerant; the first one-way throttling assembly is arranged in the refrigeration flow direction pipe to cut off or conduct the refrigerant in the refrigeration flow direction pipe, and is used for throttling the refrigerant in the refrigeration flow direction pipe when the refrigeration flow direction pipe is conducted; and the at least one second one-way throttling component is arranged in the heating flow direction pipe so as to cut off or conduct the refrigerant in the heating flow direction pipe, and is used for throttling the refrigerant in the heating flow direction pipe when the heating flow direction pipe is conducted. The air conditioner can realize intelligent switching of the refrigerant flow path in the outdoor heat exchanger, and reduce the energy consumption of the air conditioner.

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

In the related art, for the air conditioner, since both cooling and heating are performed, the refrigerant flow paths in the outdoor heat exchanger are fixed, so that the number of the refrigerant flow paths in the cooling mode is the same as the number of the refrigerant flow paths in the heating mode, the maximum capacity of the outdoor heat exchanger cannot be achieved, and energy waste is easily caused.

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 present invention is to provide an air conditioner. The air conditioner can realize intelligent switching of the refrigerant flow path in the outdoor heat exchanger, and reduce the energy consumption of the air conditioner.

In order to solve the above problem, a first aspect of the present invention provides an air conditioner, an outdoor unit and an indoor unit, wherein a refrigerant loop is formed between the outdoor unit and the indoor unit; the outdoor unit includes: a case installed in an outdoor space and having the outdoor heat exchanger disposed therein; the outdoor heat exchanger comprises a refrigeration flow direction pipe, a heating flow direction pipe and a heat exchanger body, the heat exchanger body is connected with the refrigeration flow direction pipe and the heating flow direction pipe, the refrigeration flow direction pipe and the heating flow direction pipe are used for guiding the flow of refrigerant, and the heat exchanger body is used for carrying out heat exchange on the refrigerant; the first one-way throttling assembly is arranged in the refrigeration flow direction pipe to cut off or conduct the refrigerant in the refrigeration flow direction pipe, and is used for throttling the refrigerant in the refrigeration flow direction pipe when the refrigeration flow direction pipe is conducted; and the at least one second one-way throttling assembly is arranged in the heating flow direction pipe so as to cut off or conduct the refrigerant in the heating flow direction pipe, and is used for throttling the refrigerant in the heating flow direction pipe when the heating flow direction pipe is conducted.

According to the utility model discloses an air conditioner, set up first one-way throttle subassembly on flowing to the pipe through the refrigeration in outdoor heat exchanger, and set up the one-way throttle subassembly of second on heating the flow direction pipe, in order to change the flow direction of refrigerant in outdoor heat exchanger, thereby can be along with the operational mode of air conditioner, switch the flow path of refrigerant in outdoor heat exchanger, from this come maximum performance outdoor heat exchanger's heat exchange capacity, the efficiency is improved, energy saving, in addition when the refrigerant when first one-way throttle subassembly or the one-way throttle subassembly of second, can also play the effect of throttle step-down, realize the effect of adjusting the refrigerant flow.

In some embodiments, the first one-way restriction assembly includes a one-way valve and a throttle valve, and the second one-way restriction assembly includes a one-way valve and a throttle valve.

In some embodiments, the one-way valve is integral with the throttle valve.

In some embodiments, the one-way valve is disposed adjacent to the throttle valve.

In some embodiments, the first end of the cooling flow direction pipe is communicated with the first end of the heating flow direction pipe to form a first pipeline, and the first end of the first pipeline is suitable for introducing the refrigerant in the cooling mode or leading out the refrigerant in the heating mode; the second end of the cooling flow direction pipe is communicated with the second end of the heating flow direction pipe to form a second pipeline, and the first end of the second pipeline is suitable for leading out refrigerant in a cooling mode or leading in refrigerant in a heating mode.

In some embodiments, the heat exchanger body is formed with a first refrigerant port and a second refrigerant port; the refrigerant flow direction tube includes: a first end of the third pipeline is connected with a second end of the first pipeline, and a second end of the third pipeline is connected with the first refrigerant port; and a first end of the fourth pipeline is connected with the second refrigerant port, and a second end of the fourth pipeline is connected with the second end of the second pipeline.

In some embodiments, the number of the first one-way throttling assembly is one, and the first one-way throttling assembly is connected to the fourth pipeline, wherein the first one-way throttling assembly is turned on when refrigerant flows from the first end of the fourth pipeline to the second end of the fourth pipeline in the fourth pipeline, or the first one-way throttling assembly is turned off when refrigerant flows from the second end of the fourth pipeline to the first end of the fourth pipeline in the fourth pipeline.

In some embodiments, a third refrigerant port and a fourth refrigerant port are formed in the heat exchanger body, and the third refrigerant port is communicated with the fourth refrigerant port; the heating flow direction pipe includes: a first end of the fifth pipeline is connected with the second end of the first pipeline, and a second end of the fifth pipeline is connected with the second refrigerant port; and a first end of the sixth pipeline is connected with the third refrigerant port and the fourth refrigerant port, and a second end of the sixth pipeline is connected with a second end of the second pipeline.

In some embodiments, the number of the second one-way throttling assembly is one, and the second one-way throttling assembly is connected to the sixth pipeline, wherein the second one-way throttling assembly is turned off when the refrigerant flows from the first end of the sixth pipeline to the second end of the sixth pipeline in the sixth pipeline, or the second one-way throttling assembly is turned on when the refrigerant flows from the second end of the sixth pipeline to the first end of the sixth pipeline in the sixth pipeline; the outdoor unit further comprises a one-way assembly, the one-way assembly is arranged on the fifth pipeline, when the refrigerant flows from the first end of the fifth pipeline to the second end of the fifth pipeline in the fifth pipeline, the one-way assembly is stopped, or when the refrigerant flows from the second end of the fifth pipeline to the first end of the fifth pipeline in the fifth pipeline, the one-way assembly is conducted.

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 perspective view of an external appearance of an air conditioner according to an embodiment of the present invention;

fig. 2 is a circuit diagram showing an outline of the structure of an air conditioner according to an embodiment of the present invention;

fig. 3 is a block diagram showing an outline of the structure of a control system of an air conditioner according to an embodiment of the present invention;

fig. 4 is a block diagram schematically illustrating the configuration of an indoor control system of an air conditioner according to an embodiment of the present invention;

fig. 5 is a block diagram schematically illustrating the configuration of an outdoor control system of an air conditioner according to an embodiment of the present invention;

fig. 6 is a sectional view of an indoor unit according to an embodiment of the present invention;

fig. 7 is a schematic view of the structure of an outdoor heat exchanger according to an embodiment of the present invention;

FIG. 8 is a schematic view of a prior art refrigerant flow path within an outdoor heat exchanger;

fig. 9 is a schematic view of a flow path within an outdoor heat exchanger according to one embodiment of the present invention;

fig. 10 is a schematic view of a refrigerant flow path within an outdoor heat exchanger according to one embodiment of the present invention;

fig. 11 is a schematic view of a heating flow path in an outdoor heat exchanger according to an embodiment of the present invention.

Reference numerals:

1: an air conditioner; 2: an outdoor unit; 3: an indoor unit; 4: connecting a pipe; 5: a remote controller;

10: a refrigerant circuit; 11: a compressor; 14: an expansion valve; 15: a reservoir; 16: an indoor heat exchanger; 21: a housing; 22: an outdoor heat exchanger; 23: an outdoor fan; 26: an outdoor control device; 31: an indoor fan; 35: an indoor control device; 50: a controller;

16 b: a heat transfer tube; 23 a: an outdoor fan motor; 31 a: an indoor fan motor;

221: a refrigerant flow direction tube; 222: a heating flow direction pipe; 223: a heat exchanger body; 224: a first one-way throttling assembly; 225: a second unidirectional throttling assembly; 226: a unidirectional component; 227: a first pipeline; 228: a second pipeline;

2211: a third pipeline; 2212: a fourth pipeline; 2221: a fifth pipeline; 2222: a sixth pipeline; 2231: a first refrigerant port; 2232: a second refrigerant port; 2233: a third refrigerant port; 2234: a fourth refrigerant port;

a: a one-way valve; b: a throttle valve.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an 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 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. 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 can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an 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 is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

The air conditioner 1 shown in fig. 1 includes: the indoor unit 3 is exemplified by an indoor unit (shown in the figure), and the indoor unit is usually mounted on an indoor wall surface WL or the like. For another example, an indoor cabinet (not shown) is also an indoor unit type of the indoor unit.

The outdoor unit 2 includes a housing 21, typically disposed in an outdoor space, for heat exchange with an indoor environment. In the illustration of fig. 1, the outdoor unit 2 is indicated by a broken line since the outdoor unit 2 is located outdoors on the opposite side of the indoor unit 3 with the wall surface WL interposed therebetween.

Fig. 2 shows a circuit configuration of an air conditioner 1, and the air conditioner 1 includes a refrigerant circuit 10, and is capable of executing a vapor compression refrigeration cycle by circulating a refrigerant in the refrigerant circuit 10. The indoor unit 3 and the outdoor unit 2 are connected by a connection pipe 4 to form a refrigerant circuit 10 in which a refrigerant circulates.

Further, as shown in fig. 3, the air conditioner 1 has a controller 50 to control operations of respective components in the air conditioner inside so that the respective components of the air conditioner 1 are operated to realize respective predetermined functions of the air conditioner. As shown in fig. 1, a remote controller 5 is attached to the air conditioner 1, and the remote controller 5 has a function of communicating with the controller 50 using, for example, infrared rays or other communication methods. The remote controller 5 is used for various controls of the air conditioner by a user, and interaction between the user and the air conditioner is realized.

Further, as shown in fig. 2, the refrigerant circuit 10 includes a compressor 11, an outdoor heat exchanger 22, an expansion valve 14, an accumulator 15, and an indoor heat exchanger 16. Among them, the indoor heat exchanger 16 and the outdoor heat exchanger 22 operate as a condenser or an evaporator. The compressor 11 sucks the refrigerant from the suction port, and discharges the refrigerant compressed therein to the indoor heat exchanger 16 from the discharge port. The compressor 11 is an inverter compressor with variable capacity that performs rotational speed control by an inverter.

The outdoor heat exchanger 22 is provided in the casing 21, and the outdoor heat exchanger 22 has a first inlet and a second outlet for allowing the refrigerant to flow between the first inlet and the suction port of the compressor 11 via the accumulator 15 and between the second inlet and the expansion valve 14. The outdoor heat exchanger 22 exchanges heat between the outdoor air and the refrigerant flowing through a heat transfer pipe (not shown) connected between the second inlet and the first inlet of the outdoor heat exchanger 22.

The expansion valve 14 is disposed between the outdoor heat exchanger 22 and the indoor heat exchanger 16. The expansion valve 14 has a function of expanding and decompressing the refrigerant flowing between the outdoor heat exchanger 22 and the indoor heat exchanger 16. The expansion valve 14 is configured to be capable of changing the opening degree, and by decreasing the opening degree, the flow path resistance of the refrigerant passing through the expansion valve 14 is increased, and by increasing the opening degree, the flow path resistance of the refrigerant passing through the expansion valve 14 is decreased. The expansion valve 14 expands and decompresses the refrigerant flowing from the indoor heat exchanger 16 to the outdoor heat exchanger 22 during the heating operation. Further, even if the states of other devices installed in the refrigerant circuit 10 do not change, when the opening degree of the expansion valve 14 changes, the flow rate of the refrigerant flowing in the refrigerant circuit 10 changes.

The indoor heat exchanger 16 has a second inlet and outlet for allowing the liquid refrigerant to flow between the expansion valve 14 and the indoor heat exchanger, and has a first inlet and outlet for allowing the gas refrigerant to flow between the compressor 11 and the discharge port. The indoor heat exchanger 16 exchanges heat between the refrigerant flowing through a heat transfer pipe 16b (see fig. 6) connected between the second inlet and the first inlet of the indoor heat exchanger 16 and the indoor air.

An accumulator 15 is disposed between the outdoor heat exchanger 22 and the suction port of the compressor 11. In the accumulator 15, the refrigerant flowing from the outdoor heat exchanger 22 to the compressor 11 is separated into a gas refrigerant and a liquid refrigerant. Then, the gas refrigerant is mainly supplied from the accumulator 15 to the suction port of the compressor 11.

The outdoor unit 2 further includes an outdoor fan 23, and the outdoor fan 23 generates an airflow of outdoor air passing through the outdoor heat exchanger 22 so as to promote heat exchange between the refrigerant flowing through the heat transfer tubes and the outdoor air. The outdoor fan 23 is driven by an outdoor fan motor 23a capable of changing the rotation speed. The indoor unit 3 further includes an indoor fan 31, and the indoor fan 31 generates an airflow of the indoor air passing through the indoor heat exchanger 16 to promote heat exchange between the refrigerant flowing through the heat transfer pipe 16b and the indoor air. The indoor fan 31 is driven by an indoor fan motor 31a whose rotational speed can be changed.

As shown in fig. 3 to 5, the controller 50 includes the outdoor control device 26 built in the outdoor unit 2 and the indoor control device 35 built in the indoor unit 3. The outdoor control device 26 and the indoor control device 35 are connected to each other by signal lines, and can transmit and receive signals to and from each other.

As shown in fig. 5, the outdoor control device 26 of the outdoor unit 2 controls the compressor 11, the expansion valve 14, the outdoor fan 23, and the like.

Further, referring to fig. 7, the outdoor heat exchanger 22 includes a cooling flow direction pipe 221, a heating flow direction pipe 222, and a heat exchanger body 223. The heat exchanger body 223 is connected to the cooling flow direction pipe 221 and the heating flow direction pipe 222, both the cooling flow direction pipe 221 and the heating flow direction pipe 222 are used for guiding the flow of the refrigerant, and the heat exchanger body 223 is used for performing heat exchange on the refrigerant; and, the outdoor unit 2 further includes at least one first unidirectional throttle assembly 224 and at least one second unidirectional throttle assembly 225.

Cooling flow pipe 221 is a refrigerant flow path in the cooling mode, and heating flow pipe 222 is a refrigerant flow path in the heating mode. At least one first one-way throttling assembly 224 disposed in the cooling flow pipe 221 to cut off or conduct the refrigerant in the cooling flow pipe 221, and configured to throttle the refrigerant in the cooling flow pipe 221 when the cooling flow pipe 221 is conducted; and at least one second one-way throttling assembly 225 disposed in the heating flow pipe 222 to cut off or conduct the refrigerant in the heating flow pipe 222, and to throttle the refrigerant in the heating flow pipe 222 when the heating flow pipe 222 is conducted.

That is to say, the first one-way throttling component 224 and the second one-way throttling component 225 both function as forward conduction or reverse closing, so when the refrigerant flows to the one-way throttling component along the pipe in the forward direction, the one-way throttling component conducts, the refrigerant can smoothly pass through the one-way throttling component, in this case, a refrigerant flow path can be formed between the pipe and the one-way throttling component, on the contrary, when the refrigerant flows to the one-way throttling component along the pipe in the reverse direction, the one-way throttling component is cut off, the refrigerant cannot pass through the one-way throttling component, and in this case, a refrigerant flow path cannot be formed between the pipe and the one-way throttling component.

Specifically, in the prior art, since the refrigerant flow paths in the heating mode and the cooling mode are fixed, that is, the refrigerant flows through the same flow path in the outdoor heat exchanger regardless of the cooling mode or the heating mode, and only the directions of introduction and discharge of the refrigerant are opposite, specifically, referring to fig. 8, when the air conditioner is in the cooling mode, the refrigerant flows in the outdoor heat exchanger in the direction of a solid arrow, the refrigerant is introduced through a pipeline, then is divided into two flow paths to enter the heat exchanger body, and each flow path passes through five copper pipes, then is converged into one flow path from the two flow paths, and then flows out of the outdoor heat exchanger after passing through two copper pipes of the heat exchanger body; when the air conditioner is in a heating mode, refrigerant flows in the outdoor heat exchanger according to the direction of a dotted arrow, the refrigerant enters the heat exchanger body after being guided in by a pipeline, and after passing through two copper pipes of the heat exchanger body, the refrigerant is divided into two flow paths by one flow path and enters the heat exchanger body again, and then after each path of refrigerant in the heat exchanger body passes through five copper pipes, the two flow paths converge into one path and flow out of the outdoor heat exchanger. However, since the refrigerant flows through a fixed flow path in the outdoor heat exchanger, both cooling and heating capabilities cannot be achieved, and therefore the maximum capacity of the outdoor heat exchanger cannot be achieved.

In order to solve the above problems, the present application is based on that the amount of refrigerant flowing into the outdoor heat exchanger 22 is constant, and when the air conditioner 1 is in the heating mode, the outdoor heat exchanger 22 is on the low pressure side, and the pressure loss affects the heat exchange effect of the outdoor heat exchanger 22, so that the flow path of the refrigerant flowing in the outdoor heat exchanger 22 is increased, the flow pressure loss can be reduced, and the heating capability of the air conditioner 1 is better, that is, the more refrigerant flow paths are, the less the flow pressure loss is, and the heating capability is improved; and, when the air conditioner 1 is in the cooling mode, the outdoor heat exchanger 22 is in the high pressure side, the flow path of the refrigerant flowing in the outdoor heat exchanger 22 is reduced at this time, the supercooling degree can be increased, and the principle of improving the cooling capacity of the air conditioner 1, in order to exert the maximum capacity of the outdoor heat exchanger 22, by providing the first one-way throttling component 224 and the second one-way throttling component 225, the refrigerant in the pipe can be adaptively cut off or conducted according to the operation mode of the air conditioner 1 by utilizing the performance of the one-way throttling components, so as to change the flow direction of the refrigerant in the pipe, and the flow path of the refrigerant in the outdoor heat exchanger 22 is switched, thereby exerting the heat exchange capacity of the outdoor heat exchanger 22 to the maximum extent, improving the energy efficiency, and saving the energy.

For example, when the air conditioner 1 is in the cooling mode, the first one-way throttling component 224 disposed on the cooling flow pipe 221 is turned on, so that the heat exchanger body 223 and the cooling flow pipe 221 form a flow path, and the first one-way throttling component 224 throttles and reduces the pressure of the passing refrigerant, and in addition, the second one-way throttling component 225 disposed on the heating flow pipe 222 is turned off, so that the refrigerant cannot pass through the heating flow pipe 222, and therefore the refrigerant can only flow out of the outdoor heat exchanger 22 through the cooling flow pipe 221, so that the path of the refrigerant flowing in the outdoor heat exchanger 22 is changed by disposing the first one-way throttling component 224 and the second one-way throttling component 225, and the refrigerant can be effectively prevented from entering the heating flow pipe 222 in the cooling mode, and therefore a smaller number of cooling flow pipes 221 can be disposed according to actual situations, so as to reduce the number of flow paths of the refrigerant in the outdoor heat exchanger 22 in the cooling mode, therefore, the supercooling degree is increased, the refrigerating capacity of the air conditioner 1 is improved, and when the refrigerant flows through the first one-way throttling component 224 arranged on the refrigerating flow direction pipe 221, the refrigerant in the refrigerating flow direction pipe 221 is throttled, so that the throttling and pressure reducing effects are achieved, and the refrigerant flow rate adjusting effect is realized.

When the air conditioner 1 is in the heating mode, the second one-way throttling component 225 disposed in the heating flow direction pipe 222 is turned on, so that the heat exchanger body 223 and the heating flow direction pipe 222 form a flow path, and the second one-way throttling component 225 throttles and reduces the pressure of the passing refrigerant, and furthermore, the first one-way throttling component 224 disposed in the cooling flow direction pipe 221 is turned off, so that the refrigerant cannot pass through the cooling flow direction pipe 221, so that the refrigerant can only flow out of the outdoor heat exchanger 22 through the heating flow direction pipe 222, and therefore, by providing the first one-way throttling component 224 and the second one-way throttling component 225 to change the flow path of the refrigerant in the outdoor heat exchanger 22, the refrigerant can be effectively prevented from entering the cooling flow direction pipe 221 in the heating mode, and thus a larger number of heating flow direction pipes 222 can be provided according to actual situations, so as to increase the number of flow paths of the refrigerant in the outdoor heat exchanger 22 in the heating mode, thereby reducing the flow pressure loss and improving the heating capacity of the air conditioner 1. Meanwhile, when the refrigerant flows through the second one-way throttling component 225 arranged on the heating flow direction pipe 222, the refrigerant in the heating flow direction pipe 222 is throttled, so that the throttling and pressure reducing effects are achieved, and the refrigerant flow rate is adjusted.

In short, by providing the first one-way throttling assembly 224 on the cooling flow pipe 221 and the second one-way throttling assembly 225 on the heating flow pipe 222, the refrigerant flow paths in the cooling mode and the heating mode can be respectively independent by using the performance of the one-way throttling assemblies, and the same refrigerant flow path is not used in both the cooling mode and the heating mode, so that the number of pipelines of the cooling flow pipe 221 and the number of pipelines of the heating flow pipe 222 can be adaptively reduced according to actual conditions, the number of refrigerant flow paths in the cooling mode and the heating mode are different, the purposes of small number of flow paths in the cooling mode and large number of flow paths in the heating mode are achieved, the refrigerant flow paths in the outdoor heat exchanger 22 are intelligently switched, the heat exchange capability of the outdoor heat exchanger 22 is exerted to the maximum extent, the energy efficiency is improved, energy is saved, and when the refrigerant passes through the first one-way throttling assembly 224 or the second one-way throttling assembly 225, the refrigerant flow regulating device can also play a role in throttling and pressure reduction, the effect of regulating the refrigerant flow is realized, a throttling part does not need to be arranged independently, and the cost is saved.

According to the utility model discloses air conditioner 1, set up first one-way throttle subassembly 224 on flowing to pipe 221 through the refrigeration in outdoor heat exchanger 22, and set up the one-way throttle subassembly 225 of second on heating flowing to pipe 222, in order to change the flow direction of refrigerant in outdoor heat exchanger 22, thereby can be along with air conditioner 1's operational mode, select the flow path of refrigerant in outdoor heat exchanger 22, from this come maximum performance outdoor heat exchanger 22's heat exchange capacity, improve the efficiency, energy saving, in addition when the refrigerant is when first one-way throttle subassembly 224 or the one-way throttle subassembly 225 of second, can also play the effect of throttle step-down, realize adjusting the effect of refrigerant flow.

In some embodiments, as shown in fig. 9, the first one-way throttling assembly 224 includes a one-way valve a and a throttle valve b, such that, based on the refrigerant flow direction pipe 221 being provided with the one-way valve a and the throttle valve b at the same time, when the air conditioner 1 is in the cooling mode, the one-way valve a is turned on, such that the refrigerant flows in the cooling flow direction pipe 221 and the refrigerant is throttled and dropped across the throttle valve b, and when the air conditioner 1 is in the heating mode, the one-way valve a is turned off, such that the refrigerant cannot pass through the one-way valve a and the refrigerant cannot pass through the cooling flow direction pipe 221.

And, the second one-way throttling assembly 225 includes a one-way valve a and a throttle valve b, so that, based on the heating flow direction pipe 222 being provided with the one-way valve a and the throttle valve b at the same time, when the air conditioner 1 is in the heating mode, the one-way valve a is turned on, so that the refrigerant flows in the heating flow direction pipe 222 and the refrigerant is throttled and depressurized by the throttle valve b, and when the air conditioner 1 is in the cooling mode, the one-way valve a is turned off, so that the refrigerant cannot pass through the one-way valve a and the refrigerant cannot pass through the heating flow direction pipe 222.

Accordingly, the first one-way throttling element 224 and the second one-way throttling element 225 are provided in the outdoor heat exchanger 22 to form the cooling flow path and the heating flow path, so that the refrigerant flows through different flow paths in the heating mode and the cooling mode, thereby providing a small number of cooling flow paths and a large number of heating flow paths, ensuring that the outdoor heat exchanger 22 exerts the maximum heat exchange capacity, and improving the heating capacity and the cooling capacity of the air conditioner 1.

It should be noted that the first one-way throttling assembly 224 and the second one-way throttling assembly 225 may also be made of other components or have other structures, as long as the functions of forward conduction or reverse closing and throttling can be performed, and the specific form is not limited. For example, the throttle valve b may be replaced by a capillary tube group or an electronic expansion valve, which is not limited thereto.

In some embodiments, the one-way valve a and the throttle valve b are integrated, so that the design can reduce the installation difficulty, or the one-way valve a is arranged adjacent to the throttle valve b, namely the one-way valve a and the throttle valve b are connected but not integrated, so that the design can be convenient to disassemble and replace when a certain part fails.

In some embodiments, as shown in fig. 9, a first end of the cooling flow pipe 221 communicates with a first end of the heating flow pipe 222 to form a first line 227, and a second end of the cooling flow pipe 221 communicates with a second end of the heating flow pipe 222 to form a second line 228.

Wherein the first end of the first line 227 is adapted to introduce refrigerant in the cooling mode or to derive refrigerant in the heating mode; a first end of the second line 228 is adapted to conduct refrigerant during the cooling mode or to conduct refrigerant during the heating mode.

In some embodiments, as shown in fig. 9, the heat exchanger body 223 is formed with a first refrigerant port 2231 and a second refrigerant port 2232.

And, the refrigerant flow direction tube 221 includes a third tube line 2211 and a fourth tube line 2212.

And, the cooling flow direction pipe 221 in the exterior heat exchanger 22 is connected such that a first end of the third line 2211 is connected to a second end of the first line 227, and a second end of the third line 2211 is connected to the first refrigerant port 2231; a first end of the fourth conduit 2212 is connected to the second refrigerant port 2232, and a second end of the fourth conduit 2212 is connected to a second end of the second conduit 228. With this arrangement, the first line 227, the second line 228, the third line 2211, and the fourth line 2212 form a refrigerant flow path in the cooling mode, thereby realizing the cooling function of the air conditioner 1.

In some embodiments, as shown in FIG. 9, there is one first unidirectional flow restriction assembly 224.

The first one-way throttling assembly 224 is connected to the fourth line 2212, wherein when the refrigerant flows from the first end of the fourth line 2212 to the second end of the fourth line 2212 in the fourth line 2212, the first one-way throttling assembly 224 is turned on, or when the refrigerant flows from the second end of the fourth line 2212 to the first end of the fourth line 2212 in the fourth line 2212, the first one-way throttling assembly 224 is turned off.

Specifically, based on the above design, in the cooling mode, referring to the direction of the solid arrow in fig. 10, the refrigerant is introduced from the first end of the first pipeline 227, flows into the third pipeline 2211 from the second end of the first pipeline 227, and flows into the heat exchanger body 223 from the second end of the third pipeline 2211 through the first refrigerant port 2231, and after heat exchange in the heat exchanger body 223, the refrigerant flows into the fourth pipeline 2212 from the second refrigerant port 2232, at this time, the first one-way throttling component 224 arranged on the fourth pipeline 2212 is turned on, and the refrigerant flows into the second pipeline 228 through the first one-way throttling component 224 and is led out from the first end of the second pipeline 228, thereby completing the cooling cycle of the air conditioner 1, and in this process, the refrigerant realizes one-way inlet and outlet, that is to complete the cooling process with only one refrigerant flow path, effectively increasing the degree of supercooling, and improving the cooling capability of the air conditioner 1.

In some embodiments, as shown in fig. 9, the heat exchanger body 223 is formed with a third coolant port 2233 and a fourth coolant port 2234, and the heating flowing pipe 222 includes a fifth pipe 2221 and a sixth pipe 2222.

The third refrigerant port 2233 is communicated with the fourth refrigerant port 2234, so that the refrigerant can flow through the heat exchanger body 223 when the air conditioner 1 is cooling.

The heating flow direction pipe 222 of the outdoor heat exchanger 22 is connected such that a first end of the fifth pipe 2221 is connected to a second end of the first pipe 227, and a second end of the fifth pipe 2221 is connected to the second refrigerant port 2232; a first end of the sixth pipeline 2222 is connected to the third refrigerant port 2233 and the fourth refrigerant port 2234, and a second end of the sixth pipeline 2222 is connected to a second end of the second pipeline 228. With this arrangement, the first, second, third, fifth and sixth pipe lines 227, 228, 2211, 2221 and 2222 form a refrigerant flow path in the heating mode, thereby realizing the heating function of the air conditioner 1.

In some embodiments, as shown in fig. 9, there is one second unidirectional throttling element 225, and the outdoor unit 2 further includes a unidirectional element 226.

Wherein the second one-way throttling element 225 is connected to the sixth pipeline 2222, and when the refrigerant flows from the first end of the sixth pipeline 2222 to the second end of the sixth pipeline 2222 in the sixth pipeline 2222, the second one-way throttling element 225 is turned off, or when the refrigerant flows from the second end of the sixth pipeline 2222 to the first end of the sixth pipeline 2222 in the sixth pipeline 2222, the second one-way throttling element 225 is turned on.

The check assembly 226 is connected to the fifth tube 2221, and the check assembly 226 is turned off when the refrigerant flows from the first end of the fifth tube 2221 to the second end of the fifth tube 2221 in the fifth tube 2221, or the check assembly 226 is turned on when the refrigerant flows from the second end of the fifth tube 2221 to the first end of the fifth tube 2221 in the fifth tube 2221.

Specifically, based on the above design, in the heating mode, referring to the direction of hollow arrows in fig. 11, the refrigerant is introduced from the second pipeline 228, flows into the sixth pipeline 2222 and the fourth pipeline 2212 through the second end of the second pipeline 228, but since the second one-way throttling assembly 225 on the sixth pipeline 2222 is turned on and the first one-way throttling assembly 224 on the fourth pipeline 2212 is turned off, the refrigerant can only flow into the heat exchanger body 223 through the sixth pipeline 2222, and then, based on the connection of the first end of the sixth pipeline 2222 with the third refrigerant port 2233 and the fourth refrigerant port 2234, the refrigerant at this time is split and enters the heat exchanger body 223 through the third refrigerant port 2233 and the fourth refrigerant port 2234, after the split, a part of the refrigerant enters the third pipeline 2211 through the first refrigerant port 1 of the heat exchanger body 223, another part of the refrigerant enters the fifth pipeline 2221 through the second refrigerant port 2232 of the heat exchanger body 223, and the one-way component 226 disposed on the fifth pipeline 2221 is conducted, the refrigerant can flow in the fifth pipeline 2221 through the one-way component 226, and further, the refrigerant in the fifth pipeline 2221 and the refrigerant in the third pipeline 2211 converge into one path at the second end of the first pipeline 227, and flow out of the outdoor heat exchanger 22 through the first end of the first pipeline 227, thereby completing a heating cycle in the outdoor heat exchanger 22, and in this process, the refrigerant enters and exits in two paths, i.e., completing a heating process through two refrigerant flow paths, effectively reducing a flow pressure loss, and improving a heating capacity of the air conditioner 1.

In addition, it can be understood that, based on the arrangement of the fifth and sixth pipelines 2221 and 2222, in the cooling mode, the one-way component 226 arranged on the fifth pipeline 2221 and the second one-way throttling component 225 arranged on the sixth pipeline 2222 are both closed, so that the refrigerant cannot flow in the fifth and sixth pipelines 2221 and 2222, and therefore, the cooling cycle of the air conditioner 1 is still implemented by one refrigerant flow path.

In summary, according to the air conditioner 1 of the present invention, by providing the first unidirectional throttling component 224 on the cooling flow direction pipe 221 in the outdoor heat exchanger 22 and providing the second unidirectional throttling component 225 and the unidirectional component 226 on the heating flow direction pipe 222, the flow direction of the refrigerant in the outdoor heat exchanger 22 can be changed in the cooling mode and the heating mode, so as to intelligently switch the refrigerant flow paths in the outdoor heat exchanger 22, so as to achieve the purpose of small number of refrigerant flow paths in the cooling mode and large number of refrigerant flow paths in the heating mode, effectively exert the maximum capacity of the outdoor heat exchanger 22, improve the energy efficiency of the air conditioner 1, save energy, and, when the refrigerant passes through the first unidirectional throttling component 224 or the second unidirectional throttling component 225, further play the role of throttling and reducing pressure, and achieve the effect of adjusting the refrigerant flow, without separately providing a throttling component, the cost is saved.

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 (9)

1. An air conditioner, comprising:

an outdoor unit and an indoor unit forming a refrigerant circuit therebetween;

the outdoor unit includes:

a case installed in an outdoor space and having the outdoor heat exchanger disposed therein;

the outdoor heat exchanger comprises a refrigeration flow direction pipe, a heating flow direction pipe and a heat exchanger body, the heat exchanger body is connected with the refrigeration flow direction pipe and the heating flow direction pipe, the refrigeration flow direction pipe and the heating flow direction pipe are used for guiding the flow of refrigerant, and the heat exchanger body is used for carrying out heat exchange on the refrigerant;

the first one-way throttling assembly is arranged in the refrigeration flow direction pipe to cut off or conduct the refrigerant in the refrigeration flow direction pipe, and is used for throttling the refrigerant in the refrigeration flow direction pipe when the refrigeration flow direction pipe is conducted;

and the at least one second one-way throttling assembly is arranged in the heating flow direction pipe so as to cut off or conduct the refrigerant in the heating flow direction pipe, and is used for throttling the refrigerant in the heating flow direction pipe when the heating flow direction pipe is conducted.

2. The air conditioner according to claim 1, wherein the first one-way restriction assembly includes a one-way valve and a throttle valve, and the second one-way restriction assembly includes a one-way valve and a throttle valve.

3. The air conditioner of claim 2, wherein the check valve is integral with the throttle valve.

4. The air conditioner of claim 2, wherein the check valve is disposed adjacent to the throttle valve.

5. The air conditioner according to any one of claims 1 to 4,

the first end of the cooling flow direction pipe is communicated with the first end of the heating flow direction pipe to form a first pipeline, and the first end of the first pipeline is suitable for introducing refrigerant in a cooling mode or leading out the refrigerant in a heating mode;

the second end of the cooling flow direction pipe is communicated with the second end of the heating flow direction pipe to form a second pipeline, and the first end of the second pipeline is suitable for leading out refrigerant in a cooling mode or leading in refrigerant in a heating mode.

6. The air conditioner according to claim 5,

a first refrigerant port and a second refrigerant port are formed on the heat exchanger body;

the refrigerant flow direction tube includes:

a first end of the third pipeline is connected with a second end of the first pipeline, and a second end of the third pipeline is connected with the first refrigerant port;

and a first end of the fourth pipeline is connected with the second refrigerant port, and a second end of the fourth pipeline is connected with a second end of the second pipeline.

7. The air conditioner according to claim 6, wherein the number of the first one-way throttling assembly is one, and the first one-way throttling assembly is connected to the fourth pipeline, wherein the first one-way throttling assembly is turned on when the refrigerant flows from the first end of the fourth pipeline to the second end of the fourth pipeline in the fourth pipeline, or the first one-way throttling assembly is turned off when the refrigerant flows from the second end of the fourth pipeline to the first end of the fourth pipeline in the fourth pipeline.

8. The air conditioner according to claim 7,

a third refrigerant port and a fourth refrigerant port are formed in the heat exchanger body, and the third refrigerant port is communicated with the fourth refrigerant port;

the heating flow direction pipe includes:

a first end of the fifth pipeline is connected with the second end of the first pipeline, and a second end of the fifth pipeline is connected with the second refrigerant port;

and a first end of the sixth pipeline is connected with the third refrigerant port and the fourth refrigerant port, and a second end of the sixth pipeline is connected with a second end of the second pipeline.

9. The air conditioner according to claim 8,

the number of the second one-way throttling assembly is one, the second one-way throttling assembly is connected to the sixth pipeline, when the refrigerant flows from the first end of the sixth pipeline to the second end of the sixth pipeline in the sixth pipeline, the second one-way throttling assembly is stopped, or when the refrigerant flows from the second end of the sixth pipeline to the first end of the sixth pipeline in the sixth pipeline, the second one-way throttling assembly is turned on;

the outdoor unit further comprises a one-way assembly, the one-way assembly is arranged on the fifth pipeline, when the refrigerant flows from the first end of the fifth pipeline to the second end of the fifth pipeline in the fifth pipeline, the one-way assembly is stopped, or when the refrigerant flows from the second end of the fifth pipeline to the first end of the fifth pipeline in the fifth pipeline, the one-way assembly is conducted.

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