CN106595134B - Evaporation system and air-conditioning system used in air-conditioning - Google Patents

Abstract

The invention discloses an evaporation system used in an air conditioner and an air conditioner system. Evaporation system includes evaporator, air supply device, guide and collection device. The evaporator forms an annular inner cavity in the vertical direction; the guide piece is sleeved on the outer periphery of the evaporator, and a gas channel is formed between it and the evaporator, which is used to change the flow direction of the gas entering the gas channel; the collection device is arranged on the guide below the file. The air conditioning system includes the above-mentioned evaporative system. The outside air enters the annular inner cavity through the air supply device, and exchanges heat with the evaporator in the radial direction to form condensed water and cold air. The cold air continues to move with the condensed water and hits the guide. The axial movement of the annular inner cavity is blown into the room through the air outlet, while the condensed water is trapped on the inner wall of the guide, deposited in the gas channel and collected in the collection device, reducing the amount of air blown into the room through the air outlet. The condensed water contained in the cold air can avoid water leakage in the room.

Description

Evaporation system and air-conditioning system used in air-conditioning

technical field

The invention relates to the technical field of air conditioners, in particular to an evaporation system and an air conditioner system used in air conditioners.

Background technique

In the air conditioning system in the prior art, the evaporation system is the key equipment in the refrigeration device, and its performance has a great impact on the cost and efficiency of the entire air conditioning refrigeration device. It is the key to improving the overall performance and working efficiency of the air conditioner. The key factor.

At present, the evaporation system in the air-conditioning system mainly includes a plate evaporator arranged horizontally, a water baffle arranged above the evaporator, and a casing sleeved outside the evaporator and the water baffle. The evaporator includes several pipes arranged horizontally for the circulation of the refrigerant medium. The pipes are coiled in the horizontal direction and communicate with each other. Several layers of cooling fins are vertically arranged on the outer wall of the pipes. The outside air is sucked into the space below the pipes, and convectively exchanges heat with the pipes and cooling fins. After heat exchange, the air passes through the pipes to form condensed water and cold air. Part of the condensed water stays on the cooling fins, and the remaining condensed water flows with The cold air continues to run forward. When the cold air carries part of the condensed water through the water baffle, part of the condensed water is trapped on the water baffle, thereby reducing the amount of condensed water carried by the cold air and reducing the phenomenon of water dripping when the cold air blows indoors. .

However, although the evaporation system with the above-mentioned structure is provided with a water baffle to intercept the condensed water contained in the cold air, the running direction of the cold air and the condensed water can always be kept in the same direction. Even if the cold air passes through the water baffle, there will still be some It cannot be separated, and continues to run forward with the cold air, and is discharged into the room through the air outlet, causing water leakage or dripping in the room, which affects the performance and cooling effect of the air conditioner.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is that the cold air blown to the room in the prior art evaporating system contains condensed water, which causes water dripping or water leakage, which affects the cooling effect of the air conditioner.

For this reason, the present invention provides a kind of evaporation system used in air conditioner, comprising

The evaporator forms an annular inner cavity vertically and has a first inlet and a first outlet;

an air supply device, connected to the evaporator, for drawing outside air into the annular cavity;

A guide piece is sleeved on the outer periphery of the evaporator, and a gas channel for air circulation is formed between its inner wall surface and the evaporator, and is used to change the flow direction of the gas entering the gas channel, so that the gas separated from the liquid; the gas channel and the annular inner cavity are respectively located on both sides of the evaporator;

The collection device is arranged under the guide piece and is used to collect the liquid collected in the gas channel.

Preferably, in the above-mentioned evaporating system used in air conditioning, there is one evaporator, and the evaporator includes several first annular pipes, and several layers of heat dissipation layers vertically arranged on the outer wall surface of the first annular pipes. fins;

A plurality of the first annular ducts are arranged side by side, and the first annular ducts in two adjacent rows communicate with each other to form the annular inner cavity inside the plurality of first annular ducts. The gas channel is formed between the cooling fins and the inner wall surface of the guide;

Two ends of the first annular pipe are respectively the first outlet and the first inlet.

Further preferably, in the above-mentioned evaporating system used in air conditioners, the evaporator further includes a first general liquid inlet pipe and a first general air outlet pipe;

The first general liquid inlet pipe and the first general air outlet pipe are arranged parallel to the axial direction of the annular inner cavity, and one end of several first annular pipes is sealingly inserted into the first general liquid inlet pipe. pipe, the other end of which is sealingly inserted into the first general air outlet pipe, and two adjacent first annular pipes are arranged side by side;

The first inlet and the first outlet are opened on the first general liquid inlet pipe and the first general air outlet pipe respectively.

More preferably, in the above-mentioned evaporation system for air conditioners, both the first inlet and the first outlet are located at the top of the annular inner cavity.

Preferably, in the above-mentioned evaporating system used in air conditioners, there are two evaporators, and the evaporators include several second arc-shaped pipes, and several A layer of cooling fins; several second arc-shaped pipes are arranged side by side, and the second arc-shaped pipes in two adjacent rows communicate with each other;

The second arc-shaped pipes of the two evaporators are arranged opposite to each other, so as to enclose the annular inner cavity inside the several second arc-shaped pipes, and the heat dissipation fins on the outside of the two arc-shaped pipes are connected with the guide members. The gas channel is formed between the inner wall surfaces;

Two ends of the second arc-shaped pipe are respectively the first inlet and the first outlet.

Preferably, in the above-mentioned evaporation system used in air conditioners, the evaporator further includes a second general liquid inlet pipe and a second general air outlet pipe;

The second general liquid inlet pipe and the second general air outlet pipe are arranged parallel to the axial direction of the annular inner cavity, and are respectively located at the bottom and top of the annular inner cavity, and the top seals of several second arc-shaped pipes are inserted Connected to the second general air outlet pipe, the bottom is sealed and plugged into the second general liquid inlet pipe;

The first inlet and the first outlet are opened on the second general liquid inlet pipe and the second general air outlet pipe respectively.

More preferably, in the above-mentioned evaporation system used in air conditioners, both the first total liquid inlet pipe and the first total air outlet pipe are sealed and pass through the guide member to extend out of the evaporation system; and/or

Both the second general liquid inlet pipe and the second general air outlet pipe are sealed and pass through the guide member to extend out of the evaporation system.

Preferably, in the above-mentioned evaporator system used in air conditioners, the guide member is a cylinder suitable for being sleeved on the outside of the evaporator.

Further preferably, in the above-mentioned evaporation system used in air conditioners, the annular inner cavity is a circular cavity, the barrel is a cylindrical sleeve, and the gas channel is an annular channel;

The volume of the annular channel is the same as that of the circular cavity.

The present invention provides an air-conditioning system, comprising a condenser sequentially connected through a first pipeline, the above-mentioned evaporation system used in air-conditioning according to any one of the above-mentioned ones, and a compressor, and the compressor is far away from the evaporation system One end of the evaporator is connected to the condenser to form a circulation loop for the circulation of the refrigerant medium; and a throttling device is arranged on the first pipeline between the condenser and the evaporator.

Preferably, the above-mentioned air-conditioning system further includes at least one gas-liquid separator, and the gas-liquid separator is arranged on the first pipeline between the evaporator and the compressor, and/or is arranged on the The first pipeline between the condenser and the evaporator is used to separate the gas-liquid two-phase refrigerant entering it, and the separated gas and liquid enter the compressor and the evaporator respectively.

The technical solution of the present invention has the following advantages:

1. The evaporation system used in the air conditioner provided by the present invention comprises an evaporator, an air supply device, a guide and a collection device. The evaporator forms a ring-shaped inner chamber vertically, with a first inlet and a first outlet; the air supply device is connected to the evaporator, and is used to draw the outside air into the ring-shaped inner chamber; the guide is sleeved on the On the outer periphery of the evaporator, a gas channel for air circulation is formed between the inner wall surface and the evaporator, which is used to change the flow direction of the gas entering the gas channel to separate the gas from the liquid; the gas channel and the annular cavity are respectively located in the evaporator The two sides; the collection device is arranged under the guide piece, used to collect the liquid collected in the gas channel.

In the evaporation system used in air conditioners with this structure, the evaporator is arranged in a ring shape, and guides are sleeved on its outer wall surface, and the outside air is drawn into the ring cavity through the air supply device, along the radial direction of the ring cavity, and The evaporator performs heat exchange, and the air convective heat exchange forms condensed water and cold air. Along the radial direction of the annular cavity, the cold air continues to move with the condensed water and hits the inner wall of the guide. At this time, the cold air changes its flow direction and moves along the The axial movement of the annular inner cavity is blown into the room through the air outlet, while the condensed water is trapped on the inner wall of the guide, no longer runs with the cold wind, and flows from top to bottom along the inner wall of the guide, depositing At the bottom of the gas channel, it is collected in the collection device, thereby reducing the condensed water contained in the cold air blown to the room through the air outlet of the gas channel, and avoiding water leakage in the room.

2. In the evaporation system used in the air conditioner provided by the present invention, the guide member is a cylinder suitable for being sleeved on the outside of the evaporator, so as to change the flow direction of the cold wind and keep the condensed water carried by the cold wind in the cylinder On the inner wall surface, it is also convenient to process and manufacture the evaporation system.

3. The evaporation system used in the air conditioner provided by the present invention has one evaporator, and the evaporator includes several first annular pipes, and several layers of cooling fins vertically arranged on the outer wall surface of the first annular pipe; several The first annular ducts are arranged side by side, and the first annular ducts in two adjacent rows communicate with each other to form the above-mentioned annular inner cavity inside the first annular ducts. A gas passage is formed between the walls; the two ends of the annular pipe are respectively the first outlet and the first inlet.

In the evaporation system of this structure, several first annular pipes are arranged side by side, and the above-mentioned annular inner chamber is formed inside the first annular pipe, and the air in the annular inner chamber is convective and heat-exchanged through the first annular pipe and the cooling fins. After entering the gas channel, part of the condensed water falls into the bottom of the gas channel through the heat sink, and the other part of the condensed water moves towards the inner wall of the guide with the cold wind and stays on the inner wall of the guide. The axial movement of the annular inner cavity reduces the amount of condensed water discharged into the room by the cold air through the air outlet.

3. In the evaporation system used in the air conditioner provided by the present invention, the first inlet and the first outlet of the evaporator are located at the top of the annular inner cavity, and when the gas-liquid two-phase refrigerant is formed in the first annular pipeline, the gas Under its own gravity, the gas can flow out of the evaporator through the first outlet more quickly, and the liquid slides down along the inner wall of the first annular pipe, and is still in the evaporator, which is convenient for the gas to flow out of the evaporator. It is convenient to detect and control the degree of superheat of the gas at the first outlet, and improve the cooling effect and installation performance of the air conditioner.

4. The present invention provides an air-conditioning system, including a condenser connected in sequence through a first pipeline, the evaporation system described in any one of the above, and a compressor, and one end of the compressor away from the evaporator in the evaporation system is connected to the The above-mentioned condenser to form a circulation loop for the circulation of the refrigerant medium; and a throttling device arranged on the pipeline between the condenser and the evaporator.

The air conditioning system with this structure adopts the above-mentioned evaporation system, so that during the use of the air conditioner, the cold air blown out of the room contains little condensed water, and there will be no indoor water leakage, thereby improving the cooling effect of the air conditioner and prolonging its life. service life.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

FIG. 1 is a schematic structural view of an evaporation system used in an air conditioner provided in Embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of an evaporation system used in an air conditioner provided in Embodiment 2 of the present invention;

Fig. 3 is a schematic structural view of the first embodiment of the air-conditioning system provided in Embodiment 3 of the present invention;

4 is a schematic structural view of a second implementation of the air conditioning system provided in Example 3 of the present invention;

5 is a schematic structural view of a third implementation of the air conditioning system provided in Example 3 of the present invention;

Explanation of reference signs: 1-evaporator; 11-first annular pipe; 111-first outlet; 112-first inlet; 12-annular inner cavity; 2-guiding member; 3-gas channel; 4-first total Liquid inlet pipe; 5-first total air outlet pipe; 6-second arc pipe; 71-second total liquid inlet pipe; 72-second total air outlet pipe; 8-compressor; 9-condenser; 10-section 13-gas-liquid separator; 14-collecting device; 15-air supply device; 16-first pipeline; 17-second pipeline.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

Example 1

This embodiment provides an evaporation system used in air conditioners, as shown in FIG. 1 and FIG. 3 , including an evaporator 1 , an air supply device 15 , a guide 2 and a collection device 14 .

Wherein, the guide member 2 is a cylindrical sleeve suitable for being sleeved on the outside of the evaporator 1 , and the collecting device 14 is arranged under the sleeve for collecting the liquid collected in the gas channel 3 . The air supply device 15 is preferably an axial flow fan, and is used to draw outside air into the annular gas channel 3 .

As shown in FIG. 1 , there is one evaporator 1 , including several first annular pipes 11 , several layers of cooling fins, a first general liquid inlet pipe 4 and a first general air outlet pipe 5 . Several layers of radiating fins are vertically arranged on the outer wall surface of the first annular duct 11, and the plurality of first annular ducts 11 are arranged side by side to form a circular inner cavity inside the plurality of first annular ducts 11. An annular gas channel 3 is formed between the cooling fins and the inner wall of the sleeve, the annular gas channel 3 and the circular inner cavity are respectively located on both sides of the evaporator 1, and the volume of the annular gas channel 3 is the same as that of the circular inner cavity Same volume.

The first total liquid inlet pipe 4 and the first total air outlet pipe 5 are arranged parallel to the axial direction of the circular inner cavity. One end of several first annular pipes 11 is sealed and plugged into the first general liquid inlet pipe 4, and the other end is sealed. Plugged into the first total air outlet pipe 5, two adjacent first annular pipes 11 are arranged side by side; the first total liquid inlet pipe 4 and the first total air outlet pipe 5 are respectively provided with a first inlet 112 and a first outlet 111, And the first outlet 111 and the first inlet 112 are both located at the top of the circular cavity. The first inlet 112 of the first general liquid inlet pipe 4 and the first outlet 111 of the first general air outlet pipe 5 are both sealed and pass through the guide member 2 to extend out of the evaporation system.

In the evaporation system used in air conditioning in this embodiment, the external air is drawn into the circular inner chamber by the axial flow fan, and the refrigerant medium absorbs heat in the first annular pipe 11 to form a gas-liquid two-phase refrigerant; In the radial direction of the circular inner cavity, the air in the circular inner cavity performs convective heat exchange with the first annular pipe 11 and several layers of cooling fins thereon. After heat exchange, some of the air forms condensed water, and the rest forms cold air. Part of the condensed water drops on the heat dissipation fins, and falls into the gas channel 3 through the heat dissipation fins. The remaining condensed water continues to move forward along the radial direction of the circular inner cavity with the cold wind until it hits the inner wall of the sleeve. Condensed water is trapped on the inner wall of the sleeve, and the cold air changes its flow direction, runs forward along the axial direction of the circular inner cavity, and is discharged into the room through the air outlet, so that the room blows cold air, which does not contain condensed water Or contain very little condensed water, so as to avoid the air conditioner from leaking indoors.

The refrigerant enters the evaporator 1 through the first total liquid inlet pipe 4, and is divided into multiple liquids and enters different first annular pipes 11 to increase the contact area with the air in the circular cavity and accelerate the convective heat transfer of the air The gas-liquid two-phase refrigerant is formed in several first annular pipes 11. Since the first inlet 112 and the first outlet 111 are located at the top of the circular inner cavity, the gas and liquid in the gas-liquid two-phase refrigerant Under its own gravity, the gas is discharged through the first outlet 111, and the liquid falls down along the inner wall of the first annular pipe 11 under its own gravity, and then performs a second heat exchange in the first annular pipe 11 until the gas is formed and then passes through The first outlet 111 exits the evaporator 1 . At the same time, the volume of the circular inner cavity is the same as that of the annular gas channel 3, so that the flow rate of the air in the circular inner cavity is consistent with the flow rate in the annular channel, which can ensure that the air entering the gas channel 3 can form the required temperature. cold wind.

As an alternative embodiment, the inner cavity enclosed by the insides of the first annular ducts 11 may also be an annular inner cavity 12 of other shapes, for example, square, arc and so on. Optimally, the shape of the sleeve sleeved on the outer wall of the evaporator 1 is consistent with the shape of the annular inner chamber 12 . As an alternative embodiment, the volume of the gas channel 3 may be different from the volume of the annular inner chamber 12, it is only necessary to ensure that the cold air blown through the gas channel 3 does not contain condensed water and can reach the required temperature.

As an alternative embodiment of the guide piece 2, the guide piece 2 can also be of other structures, it only needs to be sleeved on the outer wall of the evaporator 1, and is used to change the flow direction of the cold air in the gas channel 3 and keep the condensed water contained in it. on its inner wall. For example, as for the shell sleeved on the evaporator 1 , as for the shape of the guide member 2 , it is preferable to keep consistent with the shape of the annular inner chamber 12 of the evaporator 1 .

As an alternative embodiment, the first general liquid inlet pipe 4 and the first general air outlet pipe 5 can also extend out of the evaporation system without passing through the guide member 2, and extend through the end of the evaporation system along the axial direction of the annular inner chamber 12. out of the evaporation system. In a further alternative embodiment, the first opening and the first outlet 111 may be located at other positions of the annular cavity 12 , for example, at the bottom, middle or other positions of the annular cavity 12 . As a further alternative embodiment, the above-mentioned first general liquid inlet pipe 4 and the first general air outlet pipe 5 may not be provided, and several first annular pipes 11 are arranged side by side along the axial direction of the annular inner cavity 12. The first annular ducts 11 in two adjacent rows communicate with each other, one end of the first annular duct 11 in the front row is the first outlet 111, and the end of the first annular duct 11 in the last row is the first inlet 112, or any one Two ends of the first annular pipe 11 are respectively a first outlet 111 and a first inlet 112 .

As an alternative embodiment of the evaporator 1, the evaporator 1 can also be other evaporators 1 in the prior art, as long as the evaporator 1 is vertically arranged to form the above-mentioned annular inner chamber 12, with a first inlet 112 and The first outlet 111 is suitable for the guide member 2 to be sleeved on it, so as to change the flow direction of the cold air entering the gas channel 3 and separate the cold air from the condensed water. For example, finned tube heat exchangers or microchannel heat exchangers. Preferably, the first annular pipe 11 of the fin-tube heat exchanger adopts a tube, and the fins adopt aluminum fins, thereby reducing the cost of the evaporator 1; the micro-channel heat exchanger is preferably made of all-aluminum material, reducing cost.

As an alternative embodiment of the air supply device 15, the air supply device 15 can also be a centrifugal fan, or other existing fans, which only need to draw the outside air into the annular inner cavity 12, and perform counter-current exchange with the evaporator 1. The cold air required for heat formation is sufficient.

As the preference of the collection device 14, the collection device 14 can be a storehouse or a box, and only the wall surface of the guide 2 is required to open a liquid outlet, or the end of the guide 2 is provided with a liquid outlet to collect the liquid in it. The condensed water can be discharged into the chamber through the liquid outlet.

Example 2

This embodiment provides an evaporation system used in air conditioners, as shown in Figure 2, compared with the evaporation system provided in Embodiment 1, the only difference is:

There are two evaporators 1, and the evaporator 1 includes several semicircular pipes and several layers of cooling fins vertically arranged on the outer wall of the semicircular pipes, and several semicircular pipes are arranged side by side. The semicircular pipes of the two evaporators 1 are arranged opposite to each other, so that a circular inner cavity is formed on the inside of several semicircular pipes, and an annular gap is formed between the heat dissipation fins on the outside and the inner wall surface of the guide member 2. the gas channel 3; and the second general liquid inlet pipe 71 and the second general gas outlet pipe 72.

The second overall liquid inlet pipe 71 and the second overall air outlet pipe 72 are arranged in parallel to the axial direction of the circular inner cavity, and are respectively located at the bottom and top of the circular inner cavity. The bottom of the air outlet pipe 72 is sealed and inserted into the second general liquid inlet pipe 71 ; the first inlet 112 and the first outlet 111 are set on the second general liquid inlet pipe 71 and the second general air outlet pipe 72 respectively.

In the evaporator system used in air conditioning in this embodiment, the refrigerant enters the evaporator 1 through the second total liquid inlet pipe 71, divides into two paths and enters the semicircular pipes of the two evaporators 1 respectively, and connects with the circular inner pipe. The air in the cavity performs convective heat exchange to form a gas-liquid two-phase refrigerant. Since the first outlet 111 is located at the top of the annular inner cavity 12, the gas rises and is discharged through the first outlet 111 under the gravity of the gas and liquid. The liquid then falls along the inner wall of the semicircular pipe and stays in the semicircular pipe for secondary heat exchange until the formed gas is discharged through the first outlet 111 . The air in the circular inner cavity exchanges heat with the semicircular pipe and the cooling fins on it to form cold air, which contains a certain amount of condensed water. When it runs toward the inner wall of the sleeve, the condensed water is kept in On the inner wall of the cylinder, the cold air changes its flow direction and is discharged into the room through the air outlet.

As an alternative embodiment, the semicircular pipe of the evaporator 1 can replace other second arc-shaped pipes 6 , and the second arc-shaped pipes 6 of the two evaporators 1 are arranged opposite to each other to form an annular inner cavity 12 . As a modification, the first inlet 112 and the first outlet 111 can also be located in other positions of the annular cavity 12, such as the bottom, top or middle, etc., only the first inlet 112 and the first outlet 111 are respectively opened in the second general On the liquid inlet pipe 71 and the second total air outlet pipe 72.

As a further modification, the above-mentioned second overall liquid inlet pipe 71 and second overall liquid outlet pipe may not be provided, and several second arc-shaped pipes 6 are arranged side by side, and the second arc-shaped pipes 6 in two adjacent rows communicate with each other. Two ends of the second arc-shaped pipe 6 are respectively a first inlet 112 and a first outlet 111 . Preferably, the first inlet 112 and the first outlet 111 are respectively located at the bottom and top of the annular cavity 12 ; or at other positions of the annular cavity 12 .

Example 3

This embodiment provides an air conditioning system, as shown in Figure 3 and Figure 4, including a condenser 9, any evaporation system provided in Embodiment 1 or Embodiment 2, a compressor 8, a throttling device 10, two Gas-liquid separator 13. Among them, the condenser 9, the evaporator 1 in the evaporation system, and the compressor 8 are connected in sequence through the first pipeline 16, and the end of the compressor 8 away from the evaporator 1 is connected to the condenser 9 to form a cooling medium for circulation The circulation loop; the throttling device 10 is arranged on the first pipeline 16 between the condenser 9 and the evaporator 1; two gas-liquid separators 13 are respectively arranged on the first pipe between the condenser 9 and the evaporator 1 On the road 16, and on the first pipeline 16 between the evaporator 1 and the compressor 8. It also includes a second pipeline 17 , connecting the outlet gas of the gas-liquid separator 13 between the condenser 9 and the evaporator 1 to the air inlet of the compressor 8 . The gas-liquid separator 13 is used to separate the gas-liquid two-phase refrigerant entering it, and the separated gas and liquid enter the compressor 8 and the evaporator 1 respectively. Preferably, the compressor 8 is an oil-free compressor 8, and the condenser 9 is preferably a shell-and-tube heat exchanger.

It should be noted that the first outlet 111 of the evaporator 1 is connected to the gas-liquid separator 13 through the first pipeline 16, and the outlet of the gas-liquid separator 13 between the condenser 9 and the evaporator 1 is connected through the first pipeline 16 Connected to the first inlet 112 of the evaporator 1 .

The air conditioning system of this embodiment adopts the evaporation system provided in Embodiment 1 or Embodiment 2, so that the cold air discharged into the room does not contain condensed water, or contains very little condensed water, which avoids the phenomenon that the air conditioner leaks indoors . At the same time, two gas-liquid separators 13 are arranged in the above-mentioned evaporation system, and the gas-liquid separator 13 between the condenser 9 and the evaporator 1, the refrigerant enters the gas-liquid separator 13 from the outlet of the condenser 9, and after separation The gas enters the compressor 8 through the second pipeline, and the separated liquid enters the evaporator 1 through the first pipeline 16. The refrigerant forms a gas-liquid two-phase in the evaporator 1, and the gas flows out through the first outlet 111. The liquid enters the gas-liquid separator 13, while the liquid sinks down along the wall of the first annular pipe 11 or the second arc-shaped pipe 6 in the evaporator 1, and remains in the evaporator 1. At the same time, a gas-liquid separator 13 is set between the evaporator 1 and the compressor 8, and the refrigerant entering the gas-liquid separator 13 allows the liquid refrigerant with insufficient heat exchange to stay in the gas-liquid separator 13, and then passes through the gas-liquid separator 13 The first inlet 112 of the evaporator 1 returns to the evaporator 1 for secondary heat exchange to form the required gas refrigerant, and the gas formed by the liquid with sufficient heat exchange enters the compressor 8, so that the gas entering the compressor 8 The refrigerants are all gases, so as to prevent the liquid refrigerant with insufficient heat exchange from entering the compressor 8 and affecting the service life of the compressor 8 . In addition, the oil-free compressor 8 is adopted, and there is no need to consider the oil return problem of the compressor 8 during the refrigeration process.

As a modification, only one gas-liquid separator 13 can be provided, only between the evaporator 1 and the compressor 8, or only between the condenser 9 and the evaporator 1, or the two The gas-liquid separator 13 is integrated together, as shown in Figure 5, the refrigerant flowing out of the condenser 9 and the evaporator 1 enters the gas-liquid separator 13, the separated gas enters the compressor 8, and the separated liquid enters the evaporation device 1.

As an alternative embodiment, the compressor 8 may also be other existing compressors 8 . As a modification of the condenser 9, the condenser 9 may also be a plate heat exchanger or an air-cooled heat exchanger, or other heat exchangers in the prior art. As for the gas-liquid separator 13, the gas-liquid separator 13 can be any gas-liquid separator 13 in the prior art, and it only needs to realize the above-mentioned gas-liquid separation function. As a preference of the throttling device 10, the throttling device 10 is a throttle valve, or a solenoid valve, or other valves in the prior art.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (12)

1. An evaporation system for air conditioning, characterized in that it comprises The evaporator (1), forming an annular inner cavity (12) extending axially along the horizontal direction in the vertical direction, has a first inlet (112) and a first outlet (111); an air supply device (15), connected to the evaporator (1), and used to draw external air into the annular inner chamber (12); The guide (2) is sheathed on the outer periphery of the evaporator (1), and a gas channel (3) for air circulation is formed between its inner wall surface and the evaporator (1), for changing the air flow into the evaporator (1). The flow direction of the gas in the gas channel (3), so that the gas is separated from the liquid; the gas channel (3) and the annular inner cavity (12) are respectively located on both sides of the evaporator (1); Along the axial direction of the annular inner cavity, the end of the gas channel serves as an air outlet; A collecting device (14), arranged under the guide (2), is used to collect the liquid collected in the gas channel (3). 2. The evaporation system used in air conditioning according to claim 1, characterized in that: the evaporator (1) is one, and the evaporator (1) includes several first annular pipes (11), and Several layers of cooling fins vertically arranged on the outer wall surface of the first annular duct (11); A plurality of the first annular ducts (11) are arranged side by side, and two adjacent rows of the first annular ducts (11) communicate with each other, so as to enclose the inner side of the plurality of first annular ducts (11). The annular inner cavity (12), the gas passage (3) is formed between the heat dissipation fins on the outer side and the inner wall surface of the guide (2); Both ends of the first annular pipe (11) are respectively the first outlet (111) and the first inlet (112). 3. The evaporation system used in air conditioners according to claim 2, characterized in that: the evaporator (1) further comprises a first general liquid inlet pipe (4) and a first general air outlet pipe (5); The first total liquid inlet pipe (4) and the first total gas outlet pipe (5) are arranged in parallel along the axial direction of the annular inner chamber (12), and several of the first annular pipes (11) One end is sealed and inserted into the first general liquid inlet pipe (4), the other end is sealed and inserted into the first general air outlet pipe (5), and two adjacent first annular pipes (11) are arranged side by side ; The first inlet (112) and the first outlet (111) are opened on the first general liquid inlet pipe (4) and the first general air outlet pipe (5) respectively. 4. The evaporation system used in air conditioners according to claim 2 or 3, characterized in that: both the first inlet (112) and the first outlet (111) are located in the annular inner chamber (12) the top of. 5. The evaporation system used in air conditioners according to claim 1, characterized in that: there are two evaporators (1), Described evaporator (1) comprises some second arc-shaped pipes (6), and several layers of cooling fins vertically arranged on the outer wall surface of described second arc-shaped pipes (6); Several second arc-shaped pipes ( 6) arranged side by side, the second arc-shaped pipes (6) in two adjacent rows communicate with each other; The second arc-shaped pipes (6) of the two evaporators (1) are arranged opposite to each other, so as to enclose the annular inner cavity (12) inside several of the second arc-shaped pipes (6), The gas channel (3) is formed between the heat dissipation fins on the outer side and the inner wall surface of the guide piece (2); Both ends of the second arc-shaped pipe (6) are respectively the first inlet (112) and the first outlet (111). 6. The evaporation system used in air conditioners according to claim 5, characterized in that: the evaporator (1) further comprises a second general liquid inlet pipe (71) and a second general air outlet pipe (72); The second total liquid inlet pipe (71) and the second total gas outlet pipe are arranged in parallel along the axial direction of the annular inner cavity (12), and are respectively located at the bottom and top of the annular inner cavity (12). The top of the second arc-shaped pipe (6) is sealingly inserted into the second total air outlet pipe (72), and the bottom is sealingly inserted into the second total liquid inlet pipe (71); The first inlet (112) and the first outlet (111) are opened on the second general liquid inlet pipe (71) and the second general air outlet pipe (72) respectively. 7. The evaporation system used in air conditioners according to claim 3, characterized in that: Both the first general liquid inlet pipe (4) and the first general air outlet pipe (5) are sealed and pass through the guide member (2) to extend out of the evaporation system. 8. The evaporation system used in air conditioners according to claim 6, characterized in that: the second total liquid inlet pipe (71) and the second total air outlet pipe (72) are sealed through the guide Part (2) extends out of the evaporation system. 9. The evaporation system used in air conditioners according to any one of claims 1-3, 5-8, characterized in that: the guide (2) is suitable for being sleeved on the evaporator (1 ) on the outside of the cylinder. 10. The evaporation system used in air conditioners according to claim 9, characterized in that: the annular inner cavity (12) is a circular cavity, the cylinder is a cylindrical sleeve, and the gas channel ( 3) It is an annular channel; the volume of the annular channel is the same as that of the circular cavity. 11. An air-conditioning system, characterized in that it comprises a condenser (9) connected in sequence through the first pipeline (16), the evaporation system used in air-conditioning according to any one of claims 1-10, a compression Machine (8), one end of the compressor (8) away from the evaporator (1) in the evaporation system is connected to the condenser (9) to form a circulation loop for the circulation of the refrigerant medium; and A throttling device (10) arranged on the first pipeline (16) between the condenser (9) and the evaporator (1). 12. The air conditioning system according to claim 11, further comprising at least one gas-liquid separator (13); The gas-liquid separator (13) is arranged on the first pipeline (16) between the evaporator (1) and the compressor (8), and/or is arranged on the condenser (9 ) and the first pipeline (16) between the evaporator (1), used to separate the gas-liquid two-phase refrigerant entering it, and the separated gas and liquid enter the compressor (8 ) and the evaporator (1).