CN117255920A

CN117255920A - Air conditioner

Info

Publication number: CN117255920A
Application number: CN202180097908.7A
Authority: CN
Inventors: 赵东方; 曹法立; 李晓宇; 杨洪亮; 蔡良烽; 李亚军; 孟建军; 张文强
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2021-11-25
Filing date: 2021-12-21
Publication date: 2023-12-19
Also published as: WO2023092774A1

Abstract

An air conditioner comprises a heat exchanger (10), which comprises a distributor (11), the distributor (11) comprises a shell (100), one side of the distributor is provided with a refrigerant inlet (121), the other side of the distributor is provided with a plurality of flat pipe jacks (111) which are arranged at intervals, a distributing part (200) is arranged in a cavity of the shell (100), the distributing part (200) is provided with a refrigerant flow channel, the refrigerant flow channel comprises an inlet flow channel (210), a plurality of outlet flow channels (220) and a communicating flow channel (230), the inlet flow channel (210) is opposite to and communicated with the refrigerant inlet (121), each outlet flow channel (220) is opposite to and communicated with the corresponding flat pipe jack (111), the plurality of outlet flow channels (220) are symmetrically arranged relative to the inlet flow channel (210), the communicating flow channel (230) is communicated between two adjacent outlet flow channels (220) and is provided with a sharp corner part (240), the refrigerant flowing into the inlet flow channel (210) from the refrigerant inlet (121) is divided into two parts of upward flow and downward flow, or the pressure of the refrigerant flowing into the two adjacent outlet flow channels (220) is equal to the pressure equalizing flow channels (250) of the refrigerant flowing into the flow channels (250).

Description

Air conditioner

Cross Reference to Related Applications

The present disclosure claims priority to the filing of chinese patent office, application number 202111411536.9, entitled "an air conditioner," at 25, 11, 2021, and chinese patent application, application number 202111412428.3, entitled "an air conditioner," at 25, 2021, the entire contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to the field of refrigeration equipment, and in particular, to an air conditioner with a uniform refrigerant distribution.

Background

A heat pump type air conditioner is a type of cooling and heating air conditioner that is frequently used. During cooling in summer, the air conditioner cools indoor and radiates heat outdoors, and during heating in winter, the direction is opposite to that in summer, namely, indoor heating and outdoor cooling. The air conditioner performs heat exchange between different environments through the heat pump. For example, in winter, outdoor air, ground water, underground water and the like are low-temperature heat sources, indoor air is a high-temperature heat source, and the heat pump type air conditioner is used for conveying heat of an outdoor environment into an indoor environment.

Disclosure of Invention

Disclosed embodiments provide an air conditioner including a heat exchanger including a distributor for uniformly distributing refrigerant into a plurality of flat tubes, the distributor including:

a shell, wherein a cavity is formed in the shell, one side of the shell is provided with a refrigerant inlet, and the other side of the shell is provided with a plurality of flat pipe sockets which are arranged at intervals;

a distribution portion provided in the cavity, the distribution portion being provided with a refrigerant flow path including:

an inlet flow passage which is opposite to and communicated with the refrigerant inlet;

the outlet flow channels are opposite to and communicated with the corresponding flat pipe sockets, and are symmetrically arranged relative to the inlet flow channels;

the communication flow passage is communicated with the adjacent inlet flow passage, the adjacent outlet flow passages and the adjacent two outlet flow passages;

the refrigerant inlet is provided with a sharp corner part, and the sharp corner part is used for dividing the refrigerant flowing into the inlet flow channel from the refrigerant inlet into two parts of upward flow and downward flow.

The embodiment of the disclosure also provides an air conditioner, including a heat exchanger, the heat exchanger includes a distributor for uniformly distributing refrigerant into a plurality of flat tubes, the distributor includes:

a communication flow passage which communicates with the adjacent inlet flow passage, the adjacent outlet flow passage, and the adjacent two outlet flow passages;

and the pressure equalizing flow channels are communicated with two adjacent outlet flow channels, so that the refrigerant in the outlet flow channel with high pressure flows to the outlet flow channel with low pressure through the pressure equalizing flow channels.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic diagram of a related art air conditioner;

FIG. 2 is a schematic structural view of a heat exchanger according to some embodiments of the present disclosure;

FIG. 3 is a schematic structural view of a dispenser according to some embodiments of the present disclosure;

FIG. 4 is an exploded view of a dispenser according to some embodiments of the present disclosure;

FIG. 5 is a schematic structural view of a dispensing portion in a dispenser according to some embodiments of the present disclosure;

FIG. 6 is a schematic structural view of a dispensing portion in a dispenser according to some embodiments of the present disclosure;

FIG. 7 is a sectional view of an assembled configuration of components in a dispenser according to some embodiments of the present disclosure;

FIG. 8 is a schematic view of a pointed portion of a dispenser according to some embodiments of the disclosure;

FIG. 9 is a schematic structural view of a dispensing portion and a mounting portion in a dispenser according to some embodiments of the present disclosure;

FIG. 10 is a schematic of a flow path of a refrigerant in a distributor according to some embodiments of the present disclosure;

FIG. 11 is a cross-sectional view taken along line A-A of FIG. 10;

fig. 12 is a schematic structural view of a dispensing portion and a mounting portion in a dispenser according to some embodiments of the present disclosure.

Reference numerals:

in fig. 1:

1-evaporator, 2-compressor, 3-condenser, 4-expansion valve and 5-four-way reversing valve;

in fig. 2:

10-a heat exchanger, 11-a distributor, 12-a capillary shunt pipe and 13-a flat pipe;

in fig. 3 to 12:

100-shell, 110-bottom shell, 111-flat tube socket, 120-cover plate and 121-refrigerant inlet;

200-distribution part, 210-inlet flow channel, 220-outlet flow channel, 230-communication flow channel, 240-sharp corner, 250-uniform flow channel, 251-first flow channel, 252-equalizing hole;

300-mounting part, 310-through port, 320-second runner.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

Basic operation principle of air conditioner

The air conditioner in the present disclosure performs a refrigerating 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 refrigerating or heating an indoor space.

The low-temperature low-pressure refrigerant enters a compressor, and the compressor compresses the low-temperature low-pressure refrigerant into high-temperature high-pressure refrigerant gas and discharges the high-temperature high-pressure refrigerant gas; the discharged refrigerant gas flows into a condenser, is condensed into a liquid-phase refrigerant, and releases heat to the surrounding environment in the condensation process; the high-temperature high-pressure liquid-phase refrigerant is converted into low-temperature low-pressure liquid-phase refrigerant through expansion by an expansion valve; the liquid refrigerant is evaporated by the evaporator and converted into a gaseous state which is returned to the compressor. The evaporator achieves a refrigerating effect by exchanging heat with a material to be cooled using latent heat of vaporization of a refrigerant. The air conditioner may adjust the temperature of the indoor space throughout the cycle.

An outdoor unit of an air conditioner includes a compressor and an outdoor heat exchanger, an 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 function as a condenser or an evaporator. Specifically, when the indoor heat exchanger is used as a condenser, the outdoor heat exchanger is used as an evaporator, and the air conditioner performs a heating mode; when the indoor heat exchanger is used as an evaporator, the outdoor heat exchanger is used as a condenser, and the air conditioner performs a cooling mode. . The indoor heat exchanger and the outdoor heat exchanger are switched between the condenser and the evaporator through the four-way valve, and the description is omitted here.

The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of an indoor heat exchanger (which is an evaporator) to be in an ultralow pressure state, liquid refrigerant in the indoor heat exchanger is rapidly evaporated to absorb heat, air blown out by an indoor fan is cooled by an indoor heat exchanger coil pipe and then is changed into cold air to be blown into the indoor, the evaporated refrigerant is pressurized by the compressor and then is condensed into liquid state under a high-pressure environment in the outdoor heat exchanger (condenser), heat is released, and the heat is emitted into the atmosphere through an outdoor fan, so that the refrigerating effect is achieved through circulation.

The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature high-pressure gas, and enters the indoor heat exchanger (condenser) to condense, liquefy and release heat to become liquid, and meanwhile, the indoor air is heated, so that the aim of improving the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (evaporator), evaporates, gasifies and absorbs heat to become gas, and simultaneously absorbs heat of outdoor air to become gaseous refrigerant, and enters the compressor again to start the next cycle.

Fig. 1 is a schematic diagram of a heating cycle of a heat pump according to an embodiment of the present application. The heat pump comprises: an evaporator 1, a compressor 2, a condenser 3, an expansion valve 4 and a four-way reversing valve C. The specific working process of the heat pump for heating is as follows: first, the low-pressure two-phase refrigerant (mixture of liquid-phase refrigerant and vapor-phase refrigerant) in the evaporator 1 absorbs heat from a low-temperature environment; the gas refrigerant is compressed into high-temperature and high-pressure gas refrigerant after being sucked by the compressor 2; then, the high-temperature and high-pressure gas refrigerant releases heat energy to the indoor environment in the condenser 3, and the self temperature is reduced; finally, the two-phase refrigerant is throttled by the expansion valve mechanism 4 to be changed into low-temperature low-pressure two-phase refrigerant, and enters the evaporator 1 again, and the cyclic heating process is repeated. The heat exchanger described herein comprises the evaporator 1 and the condenser 3 described above.

The heat pump air conditioner changes the working condition mode through the four-way reversing valve C. In the summer refrigeration condition, the indoor heat exchanger is used as the evaporator 1, and the outdoor heat exchanger is used as the condenser 3. The indoor air is cooled down through the surface of the evaporator 1, so that the indoor temperature is reduced, and the heat is transmitted to the outside through the condenser 3.

Under the heating working condition in winter, the four-way reversing valve C is switched to change the working condition mode, so that the flow direction of the refrigerant is switched, at the moment, the indoor heat exchanger is changed into a condenser during heating, the outdoor heat exchanger is used as an evaporator, and the refrigerant absorbs heat in the environment through the outdoor heat exchanger and releases heat to the indoor environment, thereby realizing the purpose of heating.

The evaporator 1 is a device for outputting cold, and it functions to evaporate the refrigerant liquid flowing in through the expansion valve 4 to absorb heat of the object to be cooled, thereby achieving the purpose of refrigeration. The condenser 3 is a device for outputting heat, and the heat absorbed from the evaporator 1 and the heat converted by the work consumed by the compressor 2 are taken away by the cooling medium in the condenser 3, so as to achieve the purpose of heating. The evaporator 1 and the condenser 3 are important parts for heat exchange in the air conditioning heat pump unit, and the performance of the heat pump unit directly affects the performance of the whole system.

Compared with the finned tube heat exchanger, the micro-channel heat exchanger has remarkable advantages in the aspects of material cost, refrigerant filling amount, heat flux density and the like, and accords with the development trend of energy conservation and environmental protection of the heat exchanger. The microchannel heat exchanger comprises flat tubes, fins, collecting pipes, end covers and the like. A separation baffle is inserted into the collecting pipe of the multi-flow microchannel heat exchanger, the collecting pipe is divided into a plurality of independent cavities by the baffle, and each collecting pipe cavity is communicated with a certain number of flat pipes. When the microchannel heat exchanger is used as an evaporator, the refrigerant entering the heat exchanger is gas-liquid two-phase fluid with certain dryness (dryness: mass fraction of gas-phase fluid in the gas-liquid two-phase refrigerant) after throttling, the two-phase fluid can be subjected to gas-liquid separation when the flow rate is slow, if the gas-liquid separation occurs in a section of collecting pipe, the refrigerant flowing into a plurality of flat pipes at the middle lower part of the collecting pipe is pure liquid, and a plurality of flat pipes at the upper part of the collecting pipe are gas, and the maldistribution can lead to rapid reduction of the performance of the heat exchanger.

[ Heat exchanger, distributor ]

Fig. 2 is a schematic structural view of a heat exchanger according to some embodiments of the present disclosure. The heat exchanger 10 shown in fig. 2 includes a distributor 11 for uniformly distributing refrigerant into a plurality of flat tubes, and the present disclosure focuses on structural improvement of the distributor 11 in order to achieve uniform distribution of refrigerant.

FIG. 3 is a schematic structural view of a dispenser according to some embodiments of the present disclosure; FIG. 4 is an exploded view of a dispenser according to some embodiments of the present disclosure; fig. 7 is a sectional view of an assembled structure of components in a dispenser according to some embodiments of the present disclosure. Referring to fig. 3, 4 and 7, the dispenser 11 includes a housing 100 having a cavity formed therein, in which a dispensing portion 200 is mounted.

A refrigerant inlet 121 is provided at one side of the housing 100, and a bypass capillary tube 12 of the refrigeration system is connected to the refrigerant inlet 121, referring to fig. 2.

The other side of the housing 100 is provided with a plurality of flat tube sockets 111 which are arranged at intervals along the height direction of the housing 100, and the flat tubes 13 are inserted into the flat tube sockets 111.

The distribution portion 200 is provided with a refrigerant flow path including an inlet flow path 210, a plurality of outlet flow paths 220, and a communication flow path 230.

The inlet flow passage 210 is directly opposite to and communicates with the refrigerant inlet 121.

Each outlet flow passage 220 is opposite to and communicated with the corresponding flat tube socket 111, and a plurality of outlet flow passages 220 are symmetrically arranged relative to the inlet flow passage 210.

The number of outlet channels 220 is any even number, for example, 4 outlet channels 220 (220-1, 220-2, 220-3, 220-4, respectively) in the embodiment shown in FIG. 4, and 6 outlet channels 220 in the embodiment shown in FIG. 12.

The communication flow passage 230 communicates the adjacent inlet flow passage 210 with the outlet flow passage 220, and the adjacent two outlet flow passages 220.

Fig. 5 is a schematic structural view of a dispensing portion in a dispenser according to some embodiments of the present disclosure. As shown in fig. 5, for convenience of description, a communication flow path between the inlet flow path 210 and the adjacent outlet flow path 220 is defined as a first communication flow path (labeled 230-1); the communication channel between two adjacent outlet channels 220 is a second communication channel (labeled 230-2), such as the communication channel between the outlet channel 220-1 and the outlet channel 220-2, the communication channel between the outlet channel 220-3 and the outlet channel 220-4; wherein the first communication flow path 230-1 communicates with the second communication flow path 230-2.

Referring to fig. 5, the inlet flow path 210 is provided with a sharp corner 240 for dividing the refrigerant flowing into the inlet flow path 210 from the refrigerant inlet 121 into two parts of upward flow and downward flow.

The sharp corners 240 "split" the refrigerant flowing into the distributor 11 into two halves, and flow upward and downward, respectively, are key to ensure uniform distribution of the refrigerant in the flat tubes on the upper and lower sides of the refrigerant inlet 210.

There are two conditions for the refrigerant fluid to undergo gas-liquid phase separation, one being the flow rate and the other being the space, with a certain dryness. The higher the flow rate, the smaller the flow space, the more difficult phase separation occurs; the lower the flow rate, the greater the space and the more likely phase separation occurs.

The distributor 11 in the present disclosure realizes "narrow flow passage, high flow rate" through the communication flow passage 230 with a narrow structure, so that the refrigerant cannot be phase separated in the process of flowing in the distributor 11, and the distribution uniformity of the refrigerant is improved.

In some embodiments of the present disclosure, the widths W of the plurality of communication channels 230 that communicate adjacent inlet channels 210 with the outlet channels 220, and communicate adjacent two outlet channels 220, are the same or different. That is, taking fig. 5 as an example, the width W1 of the first communication flow path 230-1 and the width W2 of the second communication flow path 230-2 may be the same or different.

The width of the communication flow path 230 should not be too large to ensure the structural characteristics of "narrow flow path, high flow rate". In some embodiments, the width of the flow channels 230 is 1-5mm.

Fig. 6 is a schematic structural view of a dispensing portion in a dispenser according to some embodiments of the present disclosure. In some embodiments of the present disclosure, referring to fig. 5 and 6, one end of the inlet flow channel 210 communicates with the communication flow channel 230, and a sharp corner 240 is provided at the end (i.e., the end of the inlet flow channel 210 communicating with the communication flow channel 230).

The refrigerant flows from the refrigerant inlet 121 into one side of the pointed portion 240, and is "split into two halves" by the pointed portion 240 at one end in the process of flowing in the direction of the communication flow path 230, thereby ensuring uniform distribution of the refrigerant at both upper and lower sides.

The sharp corner 240 and the communication flow path 230 are in a straight line (as shown in fig. 8 (a), denoted as S1) or an arc line (as shown in fig. 8 (b), denoted as S2) transition.

As to the location of the communication flow path 230, in one possible embodiment,

referring to fig. 5, the communication flow path 230 communicates with an end of the outlet flow path 220 and is located at a side position of the distribution portion 200.

In another possible embodiment, referring to fig. 6, the communication flow path 230 communicates with the middle of the outlet flow path 220 and is located at the middle of the distribution portion 200. The communicating channel 230 is close to the edge of the distributing part 200 of the plate-like structure, and because the channel is formed by stamping with a die, the channel is too close to the edge, which is easy to curl, and thus the processing is difficult. The communication flow passage 230 communicates with the middle part of the outlet flow passage 220 and is disposed at the middle part of the distribution part 200 in such a manner that the processing process is simple while the uniform distribution of the refrigerant is considered.

To further improve the distribution uniformity of the refrigerant, in some embodiments of the present disclosure, the adjustment of the refrigerant flow is achieved by providing rounded corner features on the refrigerant flow channels 230.

Specifically, referring to fig. 5 and 6, at least a first rounded corner (denoted as R1) is provided on a communication transition surface between the outlet flow channel 220 and the upstream communication flow channel 230 at a position where the communication flow channel 230 communicates with the outlet flow channel 220, the first rounded corner R1 is used for adjusting a flow rate of the refrigerant flowing from the communication flow channel 230 into the outlet flow channel 220, and a purpose of flow rate adjustment is achieved by adjusting a radius of the first rounded corner R1.

In some embodiments of the present disclosure, a second rounded corner (denoted as R2) is provided on a communication transition surface between the outlet flow channel 220 and the downstream communication flow channel 230 at a position where the communication flow channel 230 communicates with the outlet flow channel 220, and the second rounded corner R2 is used to adjust a flow rate of the refrigerant flowing from the outlet flow channel 220 into the downstream communication flow channel 230, thereby improving an effect of flow rate adjustment.

For the internal structure of the dispenser, referring to fig. 4 and 7, in some embodiments of the present disclosure, the dispenser 11 further includes a mounting portion 300, and the mounting portion 300 is also a plate-shaped structure, which is disposed in the cavity, and the housing 100, the dispensing portion 200, and the mounting portion 300 are disposed in close contact.

The mounting portion 300 is provided with a plurality of through openings 310, and each through opening 310 is opposite to and communicated between the corresponding outlet flow passage 210 and the flat tube insertion opening 111, and a portion of the flat tube 13 inserted into the flat tube insertion opening 111 extends into the corresponding through opening 310.

The refrigerant flow path is a punched structure provided in the plate-like distribution portion 200, and after the housing 100, the distribution portion 200, and the mounting portion 300 are tightly fitted, the punched structure in the distribution portion 200 is blocked by the front and rear housing 100 and the mounting portion 300, thereby defining the refrigerant flow path.

The installation part 300 mainly creates a certain insertion depth for the flat tube 13, and ensures the process feasibility.

The casing 100 includes a bottom shell 110 and a cover plate 120, the bottom shell 110 is in a box structure, one side of the bottom shell 110 is open, the other side is provided with a flat pipe socket 111, the cover plate 120 is arranged at the opening of the bottom shell 110, the opening of the bottom shell 110 is blocked to form an internal cavity, and the cover plate 120 is provided with a refrigerant inlet 121.

The distributing portion 200 is disposed closely to the cover 120, the mounting portion 300 is disposed closely to the side of the bottom case 110 where the flat tube insertion opening 111 is disposed, and the distributing portion 200 is also closely attached to the mounting portion 300, as shown in fig. 7.

The box-shaped bottom case 110 encloses the cover plate 120, the distribution portion 200, and the mounting portion 300, prevents leakage due to poor welding between plates, and also prevents leakage due to corrosion.

With continued reference to FIG. 7, the flat tube 13 is inserted into the housing 100 to a depth m, and the overall thickness of the housing 100 is n, with m.ltoreq.3/4 n in some embodiments of the present disclosure.

In the above embodiment, when the inflow velocity of the refrigerant is large, the flow rate and the pressure of the refrigerant in the outlet flow passage 220 (220-1 and 220-4 in the structures shown in fig. 5 and 6) of the both sides distant from the inlet flow passage 210 are large; when the inflow velocity of the refrigerant is small, the refrigerant flow rate in the outlet flow passage (220-2 and 220-3 in the structures shown in fig. 5 and 6) of the inlet flow passage 210 at both sides is large, the pressure is small, and the frequency of the compressor is different when the unit is operated, so that the inflow velocity is different, and the distribution of the refrigerant flow rate is related to the inflow velocity.

When the refrigerant inflow velocity is large, it is considered that if the excessive refrigerant flow can be partially returned into the upstream outlet flow passage 220 (220-2 and 220-3 in the structures shown in fig. 5 and 6), the refrigerant flow distribution will be more uniform; similarly, when the refrigerant flow rate is small, it is considered that if the excessive refrigerant flow can partially flow into the downstream outlet flow passage 220 (220-1 and 220-4 in the structures shown in fig. 5 and 6), it also contributes to the improvement of the distribution uniformity of the refrigerant.

FIG. 9 is a schematic structural view of a dispensing portion and a mounting portion in a dispenser according to some embodiments of the present disclosure; FIG. 10 is a schematic of a flow path of a refrigerant in a distributor according to some embodiments of the present disclosure; fig. 11 is a cross-sectional view taken along A-A in fig. 10. In some embodiments of the present disclosure, referring to fig. 9 to 11, a pressure equalizing channel 250 is further provided between two adjacent outlet channels 220, so that the refrigerant in the outlet channel 220 with high pressure flows to the outlet channel 220 with low pressure through the pressure equalizing channel 250, and the effect of secondary redistribution of the refrigerant is achieved.

In fig. 10 and 11, the refrigerant injection flow rate is high, and at this time, the flow rate of the refrigerant in the outlet channels 220 (220-1 and 220-4 in the structure shown in fig. 10) at both sides far from the inlet channel 210 is high, the pressure is high, and the excessive flow rate of the refrigerant is returned to the upstream outlet channels 220 (220-2 and 220-3 in the structure shown in fig. 10) along the equalizing channels 250, so as to achieve the equalizing flow.

When the communication flow path 230 shown in fig. 5 is provided at the end of the outlet flow path 220, the communication flow path 230 is positioned at the side of the distribution portion 200, and the pressure equalizing flow path 250 is connected to the other end of the outlet flow path 220.

When the communication flow path 230 shown in fig. 6 is provided in the middle of the outlet flow path 220, the communication flow path 230 is located in the middle of the distribution part 200, and the pressure equalizing flow path 250 is connected to one or both ends of the outlet flow path 220.

In some embodiments of the present disclosure, referring to fig. 9 (a), a first flow channel 251 is provided on the distribution part 200, and one end of the first flow channel 251 communicates with the outlet flow channel 220; referring to fig. 9 (b), the mounting portion 300 is provided with a second flow path 320, and one end of the second flow path 320 communicates with a port 310 facing the other adjacent outlet flow path 220; referring again to fig. 10 and 11, the other end of the first flow channel 251 overlaps with the other end of the second flow channel 320 to form a pressure equalizing hole 252, and the pressure equalizing flow channel 250 is formed by the first flow channel 251, the second flow channel 320, and the pressure equalizing hole 252.

The size of the equalizing hole 252 is adjusted by the length of the overlapping portion of the first flow path 251 and the second flow path 320.

The pressure equalizing flow passage 250 has a width close to the width of the communication flow passage 230.

Fig. 12 is a schematic structural view of a dispensing portion and a mounting portion in a dispenser according to some embodiments of the present disclosure. The distributor comprises 6 outlet flow channels 220, and a pressure equalizing flow channel 250 is arranged between two adjacent outlet flow channels 220, wherein (a) in fig. 12 is a schematic structural view of the distributing part 200, (b) in fig. 12 is a schematic structural view of the mounting part 300, and (c) in fig. 12 is a schematic structural view of the distributing part 200 assembled with the mounting part 300.

The above is merely a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

An air conditioner comprising a heat exchanger, wherein the heat exchanger comprises a distributor for uniformly distributing refrigerant into a plurality of flat tubes, the distributor comprising:

a shell, wherein a cavity is formed in the shell, one side of the shell is provided with a refrigerant inlet, and the other side of the shell is provided with a plurality of flat pipe sockets which are arranged at intervals;

a distribution portion provided in the cavity, the distribution portion being provided with a refrigerant flow path including:

an inlet flow passage which is opposite to and communicated with the refrigerant inlet;

the outlet flow channels are opposite to and communicated with the corresponding flat pipe sockets, and are symmetrically arranged relative to the inlet flow channels;

a communication flow passage that communicates adjacent inlet flow passages with the outlet flow passages and adjacent two of the outlet flow passages;

the refrigerant inlet is provided with a sharp corner part, and the sharp corner part is used for dividing the refrigerant flowing into the inlet flow channel from the refrigerant inlet into two parts of upward flow and downward flow.
An air conditioner according to claim 1, wherein,

one end of the inlet flow passage is communicated with the communication flow passage, and the sharp corner is arranged at the end.
An air conditioner according to claim 2, wherein,

the communication flow passage is communicated with the end part of the outlet flow passage, and the communication flow passage is positioned at the side position of the distribution part.
An air conditioner according to claim 2, wherein,

the communication runner is communicated with the middle part of the outlet runner, and the communication runner is positioned at the middle part of the distribution part.
An air conditioner according to claim 2, wherein,

the sharp corner and the communication flow channel are in linear or arc transition.
An air conditioner according to any one of claims 1 to 5, wherein,

at least a first round corner part is arranged on a communication transition surface of the outlet flow passage and the communication flow passage positioned at the upstream at the position where the communication flow passage is communicated with the outlet flow passage, and the first round corner part is used for adjusting the flow rate of the refrigerant flowing into the outlet flow passage from the communication flow passage.
The air conditioner according to claim 6, wherein,

and a second round corner part is arranged on a communication transition surface of the outlet flow passage and the downstream communication flow passage at the position where the communication flow passage is communicated with the outlet flow passage, and the second round corner part is used for regulating the flow rate of the refrigerant flowing from the outlet flow passage into the downstream communication flow passage.
An air conditioner according to any one of claims 1 to 5, wherein,

the widths of the sections of the communication channels communicated between the adjacent inlet channels and the adjacent outlet channels and between the adjacent outlet channels are the same or different.
An air conditioner according to any one of claims 1 to 5, wherein,

the distributor also comprises a mounting part which is arranged in the cavity, and the shell, the distributing part and the mounting part are tightly attached;

the mounting part is provided with a plurality of through holes, and each through hole is opposite to and communicated between the corresponding outlet runner and the flat pipe socket;

the flat tube inserted into the flat tube socket is provided with a part which extends into the corresponding through hole.
The air conditioner according to claim 9, wherein,

the shell comprises a bottom shell and a cover plate, wherein one side of the bottom shell is open, the other side of the bottom shell is provided with the flat pipe socket, the cover plate is arranged at the opening of the bottom shell, and the cover plate is provided with the refrigerant inlet;

the distributing part is tightly attached to the cover plate, the mounting part is tightly attached to one side of the bottom shell, which is provided with the flat pipe socket, and the distributing part is tightly attached to the mounting part.
An air conditioner comprising a heat exchanger, wherein the heat exchanger comprises a distributor for uniformly distributing refrigerant into a plurality of flat tubes, the distributor comprising:

a shell, wherein a cavity is formed in the shell, one side of the shell is provided with a refrigerant inlet, and the other side of the shell is provided with a plurality of flat pipe sockets which are arranged at intervals;

a distribution portion provided in the cavity, the distribution portion being provided with a refrigerant flow path including:

an inlet flow passage which is opposite to and communicated with the refrigerant inlet;

the outlet flow channels are opposite to and communicated with the corresponding flat pipe sockets, and are symmetrically arranged relative to the inlet flow channels;

a communication flow passage that communicates adjacent inlet flow passages with the outlet flow passages and adjacent two of the outlet flow passages;

and the pressure equalizing flow passage is communicated between two adjacent outlet flow passages, so that the refrigerant in the outlet flow passage with high pressure flows to the outlet flow passage with low pressure through the pressure equalizing flow passages.
The air conditioner according to claim 11, wherein,

the communicating flow passage is communicated with the end part of the outlet flow passage, the communicating flow passage is positioned at the side of the distribution part, and the pressure equalizing flow passage is communicated with the other end of the outlet flow passage.
The air conditioner according to claim 11, wherein,

the communicating flow passage is communicated with the middle part of the outlet flow passage, the communicating flow passage is positioned at the middle part of the distribution part, and the pressure equalizing flow passage is communicated with one end or two ends of the outlet flow passage.
An air conditioner according to any one of claims 11 to 13,

the distributor also comprises a mounting part which is arranged in the cavity, and the shell, the distributing part and the mounting part are tightly attached;

the mounting part is provided with a plurality of through holes, and each through hole is opposite to and communicated between the corresponding outlet runner and the flat pipe socket;

the flat tube inserted into the flat tube socket is provided with a part which extends into the corresponding through hole.
The air conditioner according to claim 14, wherein,

the distribution part is provided with a first flow passage, and one end of the first flow passage is communicated with the outlet flow passage;

the installation part is provided with a second flow passage, and one end of the second flow passage is communicated with the port opposite to the other adjacent outlet flow passage;

the other end of the first flow channel is overlapped with the other end of the second flow channel to form a pressure equalizing hole;

the pressure equalizing flow passage is formed by the first flow passage, the second flow passage and the pressure equalizing hole.
The air conditioner according to claim 14, wherein,

the shell comprises a bottom shell and a cover plate, wherein one side of the bottom shell is open, the other side of the bottom shell is provided with the flat pipe socket, the cover plate is arranged at the opening of the bottom shell, and the cover plate is provided with the refrigerant inlet;

the distributor is tightly attached to the cover plate, the installation part is tightly attached to one side of the bottom shell, which is provided with the flat pipe socket, and the distribution part is tightly attached to the installation part.
The air conditioner according to claim 14, wherein,

the depth of the flat tube inserted into the shell is m, and the thickness of the shell is n, wherein m is less than or equal to 3/4n.
An air conditioner according to any one of claims 11 to 13,

the widths of the sections of the communication channels communicated between the adjacent inlet channels and the adjacent outlet channels and between the adjacent outlet channels are the same or different.
The air conditioner of claim 18, wherein the air conditioner further comprises a fan,

the width of the communicating flow passage is 1-5mm.
An air conditioner according to any one of claims 11 to 13,

and a round corner part for adjusting the refrigerant flow passage is arranged at the position where the communication flow passage is communicated with the outlet flow passage.