CN215930192U

CN215930192U - Heat exchange assembly and air conditioning system

Info

Publication number: CN215930192U
Application number: CN202121476854.9U
Authority: CN
Inventors: 廉宁
Original assignee: Trane Air Conditioning Systems China Co Ltd
Current assignee: Trane Air Conditioning Systems China Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-03-01
Anticipated expiration: 2031-06-30

Abstract

The application provides a heat exchange assembly and an air conditioning system, wherein, be applied to this heat exchange assembly of air conditioning system, including condenser and evaporimeter. The condenser comprises a liquid outlet and a liquid inlet; the evaporator comprises a shell, a gas-liquid separation cavity arranged in the shell, a refrigerant inlet arranged in the shell, a refrigerant outlet arranged in the shell, and a liquid-carrying-proof water chamber and an evaporator water chamber which are respectively positioned in the gas-liquid separation cavity; the liquid-carrying prevention water chamber is separated from the evaporator water chamber, and the gas-liquid separation cavity is respectively connected with the refrigerant inlet and the refrigerant outlet; a first heat exchange tube is arranged in the liquid-carrying-preventing water chamber, and a second heat exchange tube is arranged in the evaporator water chamber; one end of the first heat exchange tube is connected with a liquid inlet of the condenser, the other end of the first heat exchange tube is connected with a liquid outlet of the condenser, and liquid circulated by the condenser flows in the first heat exchange tube and exchanges heat with refrigerant in the liquid-carrying-preventing water chamber.

Description

Heat exchange assembly and air conditioning system

Technical Field

The application relates to the technical field of heat exchange devices, in particular to a heat exchange assembly and an air conditioning system.

Background

With the continuous development of society and the progress of science and technology, the application of the air conditioning system is also wider. The air conditioning system comprises an evaporator, a gas-liquid separation cavity in the evaporator can allow some liquid-carrying refrigerants to flow out of a refrigerant outlet of the evaporator, so that negative effects are generated on a unit of the air conditioning system, and even parts of a compressor are damaged.

SUMMERY OF THE UTILITY MODEL

The application provides a heat exchange assembly is applied to air conditioning system, includes:

the condenser comprises a liquid outlet and a liquid inlet;

the evaporator comprises a shell, a gas-liquid separation cavity arranged in the shell, a refrigerant inlet arranged in the shell, a refrigerant outlet arranged in the shell, and a liquid-carrying-proof water chamber and an evaporator water chamber which are respectively positioned in the gas-liquid separation cavity; the liquid-carrying-prevention water chamber is separated from the evaporator water chamber, and the gas-liquid separation cavity is respectively connected with the refrigerant inlet and the refrigerant outlet;

a first heat exchange tube is arranged in the liquid-carrying-preventing water chamber, and a second heat exchange tube is arranged in the evaporator water chamber; one end of the first heat exchange tube is connected with the liquid inlet of the condenser, the other end of the first heat exchange tube is connected with the liquid outlet of the condenser, and liquid circulated by the condenser flows in the first heat exchange tube and exchanges heat with the refrigerant in the liquid-carrying-proof water chamber.

Optionally, the number of the first heat exchange tubes is not more than the number of the second heat exchange tubes.

Optionally, the condenser includes main export and main import, and with the supplementary export of main exit linkage, with the supplementary import of main access connection, supplementary import with the one end of first heat exchange tube is connected, supplementary export with the other end of first heat exchange tube is connected.

Optionally, the aperture of the auxiliary inlet is smaller than the aperture of the main inlet, and the aperture of the auxiliary outlet is smaller than the aperture of the main outlet.

Optionally, the heat exchange assembly further comprises a pump;

the pump includes pump inlet and pump export, the pump inlet with the condenser assist exit linkage, the pump export with first heat exchange tube is connected, will the liquid pump of condenser output goes into first heat exchange tube.

Optionally, the air conditioning system includes a controller and a temperature detector, the controller includes a temperature detection end, and the temperature detection end is connected to the temperature detector;

the heat exchange assembly further comprises a control valve arranged between the first heat exchange tube and the auxiliary outlet of the condenser, the control valve is connected with the controller, the temperature detector is arranged between the auxiliary outlet of the condenser and the first heat exchange tube and used for detecting the temperature of the liquid circulated by the condenser, and the controller controls the opening degree of the control valve to control the flow of the liquid flowing into the first heat exchange tube when the temperature is greater than a threshold value.

Optionally, the heat exchange assembly further comprises tube plates, and the tube plates are respectively inserted into two ends of the first heat exchange tube and two ends of the second heat exchange tube; the first heat exchange tube and the second heat exchange tube respectively comprise a water inlet tube and a water outlet tube; the tube plate comprises a water containing space, and the water inlet pipe is communicated with the water outlet pipe to form a water loop.

Optionally, the evaporator is of a cylinder structure.

Optionally, the heat exchange assembly comprises a tube support assembly, and the tube support assembly is respectively arranged in the first heat exchange tube and the second heat exchange tube in a penetrating manner.

The application provides an air conditioning system, includes the heat exchange assembly as in the right above.

The heat exchange assembly of the embodiment of the application, including evaporimeter and condenser, the evaporimeter includes evaporimeter hydroecium and liquid water carrying prevention hydroecium, the second heat exchange tube of evaporimeter hydroecium realizes the first heat exchange of liquid refrigerant and water, the first heat exchange tube in the liquid water carrying prevention hydroecium realizes the refrigerant and the water secondary heat exchange of liquid carrying, can utilize the liquid that flows through the condenser or the waste heat that produces of the liquid itself that flows into the condenser like this, realize the secondary heat exchange for the evaporimeter, reduce the risk of the refrigerant liquid carrying of evaporimeter refrigerant export, also need not extra heat source cost, thereby reduce the negative effects of the refrigerant of liquid carrying of evaporimeter to the unit, for example avoid losing compressor spare part, reduce the power consumption of the compressor of unit performance.

Drawings

FIG. 1 is a schematic diagram of one embodiment of an air conditioning system;

FIG. 2 is a schematic view of an embodiment of the heat exchange assembly of FIG. 1;

FIG. 3 is a schematic view of one embodiment of the evaporator of FIG. 2;

FIG. 4 is a schematic view of one embodiment of the heat exchange assembly of FIG. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The present application provides an air conditioning system 10. The air conditioning system 10 of the present application will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

FIG. 1 is a schematic diagram illustrating one embodiment of an air conditioning system 10. In the present embodiment, the air conditioning system 10 is a system that processes the temperature, humidity, cleanliness and airflow speed of indoor air. The air conditioning system 10 includes a heat exchange assembly 11, a compressor 12, and a throttle 13. The compressor 12 is provided in a refrigerant circulation circuit of the air conditioning system 10, and performs functions of sucking a refrigerant, compressing the refrigerant, transporting the refrigerant, and the like. The compressor 12 sucks a refrigerant and outputs a compressed gas, which is a high-temperature high-pressure gas.

Wherein, the heat exchange assembly 11 exchanges heat between indoor and outdoor refrigerants. In some embodiments, heat exchange assembly 11 may include a condenser 21 and an evaporator 22. The condenser 21 cools the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 12 into a high-temperature and high-pressure liquid refrigerant, and outputs the refrigerant, and the heat released by the refrigerant in the process is taken away by water or air. The throttle valve 13 throttles and reduces the pressure of the high-temperature high-pressure liquid refrigerant and adjusts the flow rate, so that the high-temperature high-pressure liquid refrigerant is changed into the high-temperature low-pressure refrigerant and is output, and the purpose of reducing the pressure and adjusting the flow rate is achieved. The evaporator 22 evaporates the refrigerant in the liquid state with high temperature and low pressure outputted from the throttle valve 13 into the refrigerant in the gaseous state with low temperature and low pressure and outputs the refrigerant, in the process, the refrigerant can absorb heat. The compressor 12 can suck the low-temperature low-pressure gaseous refrigerant in the evaporator 22, and output the high-temperature high-pressure gaseous refrigerant after compression.

Fig. 2 is a schematic diagram of one embodiment of the heat exchange assembly 11 of fig. 1. The condenser 21 in the heat exchange assembly 11 of the present application comprises a liquid outlet 23 and a liquid inlet 24. Wherein, the liquid inlet 24 is used for the liquid entering the condenser 21, and the liquid outlet 23 is used for outputting the liquid entering the condenser 21 after being cooled in the condenser 21. The liquid output from condenser 21 has a temperature. In some embodiments, a liquid such as water with temperature, for example, a liquid refrigerant, and other single liquid or other mixed liquid as long as the liquid can be circulated from the condenser 21 are within the scope of the embodiments of the present application. In some embodiments, the temperature of the liquid entering condenser 21 may be 30 degrees celsius and the temperature of the liquid exiting condenser 21 may be 35 degrees celsius. Any liquid entering condenser 21 that has a temperature lower than the temperature of the liquid exiting condenser 21 is within the scope of the embodiments of the present application.

As shown in fig. 2, in some embodiments, the condenser may comprise a condenser shell 213, heat exchange tubes 214 of the condenser, and condenser tube sheets (not labeled in fig. 2) at both ends of the heat exchange tubes 214 of the condenser, a refrigerant inlet 212 of the condenser, and a refrigerant outlet 211 of the condenser.

Referring to fig. 2, fig. 3 is a schematic diagram of an embodiment of the evaporator 22 of fig. 2. The evaporator 22 in the heat exchange assembly 11 of the present application includes a shell 25, a gas-liquid separation chamber 26 disposed in the shell 25, and a liquid-carrying-proof water chamber 31 and an evaporator water chamber 32 respectively located in the gas-liquid separation chamber 26; the liquid-entrainment preventing water chamber 31 is separated from the evaporator water chamber 32, and the gas-liquid separation chamber 26 is connected to the refrigerant inlet 28 and the refrigerant outlet 29, respectively. The casing 25 may be an outermost casing of the evaporator 22. Thus, the refrigerant inlet 28 may flow the liquid refrigerant into the evaporator 22, and the gas-liquid separation chamber 26 may change the liquid refrigerant into the gaseous refrigerant by the heat exchange of water, and may flow the gaseous refrigerant out of the refrigerant outlet 29.

In some embodiments, the gas-liquid separation chamber 26 of the present application includes a first space (not labeled in fig. 2) in communication with a second space (not labeled in fig. 2) in communication with the refrigerant outlet 29 and the refrigerant inlet 28; the first space is filled with gaseous refrigerant and is positioned in the shell side outside the liquid-entrainment preventing water chamber 31; the second space is through-flowed with liquid refrigerant in the shell side outside the evaporator water chamber 32. In this way, the liquid refrigerant flows from the refrigerant inlet 28 into the second space, the primary heat exchange between the liquid refrigerant and the water is realized by the evaporator water chamber 32, and the gaseous refrigerant after the primary heat exchange carries the liquid refrigerant (liquid refrigerant) into the first space. The liquid-entrainment prevention water chamber 31 can perform secondary heat exchange on the refrigerant with liquid after heat exchange, and then the refrigerant after secondary heat exchange can flow out from the refrigerant outlet 29, so that the risk of the refrigerant with liquid flowing out of the evaporator 22 can be reduced. However, the refrigerant with liquid in the first space after the primary heat exchange in the evaporator water chamber 32 may occur in any one or more of the following cases: too much refrigerant or too fast a refrigerant flow rate, or insufficient second heat exchange tubes 34 of the evaporator 22, causes the liquid refrigerant to have less time to complete a heat exchange with water and to be forced into the first space.

Wherein, a first heat exchange tube 33 is arranged in the liquid-tight water chamber 31, a second heat exchange tube 34 is arranged in the evaporator water chamber 32, the first heat exchange tube 33 is arranged between the second heat exchange tube 34 and the refrigerant outlet 29, one end of the first heat exchange tube 33 is connected with the liquid inlet 24 of the condenser 21, the other end of the first heat exchange tube 33 is connected with the liquid outlet 23 of the condenser 21, and the liquid circulated by the condenser 21 flows in the first heat exchange tube 33 and exchanges heat with the refrigerant in the liquid-tight water chamber 31. Thus, the second heat exchange tube 34 of the evaporator water chamber 32 passes through flowing water to realize primary heat exchange with the liquid refrigerant, and the first heat exchange tube 33 in the liquid-carrying water chamber 31 passes through flowing water to realize secondary heat exchange with the liquid refrigerant, so that the waste heat generated by the liquid flowing out of the condenser 21 or the liquid flowing into the condenser 21 can be utilized to realize secondary heat exchange for the evaporator 22, thereby reducing the risk of liquid carrying of the refrigerant at the refrigerant outlet of the evaporator 22, and also not requiring extra heat source cost, thereby reducing the negative influence of the air suction and liquid carrying of the evaporator 22 on the unit, for example, avoiding the loss of parts of the compressor 12, and reducing the power consumption of the compressor 12 of the unit performance. Moreover, the first heat exchange tube 33 is positioned in the liquid-carrying-preventing water chamber 31, and the first heat exchange tube 33 is still positioned in the evaporator 22, so that the pressure of the refrigerant in the evaporator is always balanced, suction overheating, pressure drop increase and the like can not occur, and the efficiency of the unit is not influenced.

In some embodiments, a second heat exchange tube 34 is connected to the liquid outlet 23 of the condenser 21 near the refrigerant inlet 28 and away from the refrigerant outlet 29, and the water in the evaporator water chamber 32 circulates to exchange heat with the refrigerant in the second space, thus achieving a primary heat exchange. In some embodiments, a first heat exchange tube 33 is connected to the liquid inlet 24 of the condenser near the refrigerant outlet 29 and away from the refrigerant inlet 28, and the first heat exchange tube 33 is used for water circulation of the liquid-proof water chamber 31 to exchange heat with the refrigerant in the first space, so that secondary heat exchange is realized. Other connection modes capable of realizing primary heat exchange and secondary heat exchange belong to the protection scope of the embodiment of the application.

In some embodiments, the refrigerant outlet 29 is located above the refrigerant inlet 28, and the liquid floats up by gas and sinks down by gravity, and the gaseous refrigerant that achieves gas-liquid separation is output from the refrigerant outlet 29. In some embodiments, the first heat exchange tube 33 is positioned above the second heat exchange tube 34.

In some embodiments, the refrigerant outlet 29 comprises at least two refrigerant outlets 29 spaced apart from the housing 25, and the refrigerant outlets 29 are configured to cooperate with a compressor to discharge refrigerant in a gaseous state. In other embodiments, the refrigerant outlet 29 may be one refrigerant outlet 29 provided to the housing 25. The total flow of at least two refrigerant outlets 29 is equal to the total flow of one refrigerant outlet 29.

Continuing with FIG. 2, in some embodiments, the liquid trap chamber 31 includes a first inlet 311 and a first outlet 312. The first inlet 311 may enable fluid flow into the first heat exchange tube 33 and the first outlet 312 enables fluid flow out of the first heat exchange tube 33. In some embodiments, the temperature of the first inlet 311 of the liquid-tight water chamber 31 may be 30 degrees celsius. Here, by way of example only, the temperature of the first inlet 311 of the liquid trap chamber 31 may be the same as the liquid temperature of the liquid outlet 23 of the condenser 21.

In some embodiments, the evaporator water chamber 32 includes a second inlet 321 and a second outlet 322. In some embodiments, the second inlet 321 allows the liquid with a higher temperature to flow in, and after evaporation in the evaporator water chamber 32, allows the liquid with a lower temperature to flow out from the second outlet 322. For example, the higher temperature liquid may be cooling water at 12 degrees celsius. For another example, the lower temperature liquid may be cooling water at 7 degrees celsius.

In some embodiments, the first heat exchange tube 33 and the second heat exchange tube 34 may be collectively referred to as the heat exchange tube 27. The evaporator 22 may be a flooded evaporator with refrigerant on the shell 25 side and water on the heat exchange tubes 27 side. In this way, a part of the first heat exchange tube 33 is added to the liquid-tight water chamber 31 of the flooded evaporator, the condenser 21 outputs liquid with higher temperature, and the heat exchange tube 27 in the evaporator 22 performs secondary heat exchange with the refrigerant on the shell 25 side, so that the evaporation performance of the evaporator 22 is improved, and gaseous refrigerant can be outputted more favorably. In other embodiments, the refrigerant may be on the heat exchange tube 27 side and the water may be on the shell 25 side, as long as the residual heat of the liquid circulated by the condenser 21 can be used.

As shown in fig. 3, the first heat exchanging pipe 33 and the second heat exchanging pipe 34 may be of the same type or different types, and are not limited herein. And the quantity of the first heat exchange tubes 33 can make the first heat exchange tubes 33 fill the liquid-tight water chamber 31 according to the user requirements, and also can make the first heat exchange tubes 33 fill the part of the liquid-tight water chamber 31, so that the secondary heat exchange can be realized. The detailed description is as follows.

In some embodiments, the number of first heat exchange tubes 33 is no more than the number of second heat exchange tubes 34. Thus, the cost and the effectiveness of the capacity of the secondary heat exchange can be balanced, the first heat exchange tube 33 can be used for the secondary heat exchange as much as possible to complete the vaporization of the refrigerant with liquid, the overheating of the liquid-carrying-proof water chamber 31 caused by the excessive first heat exchange tube 33 can be avoided, and the influence on the air pressure and the temperature of the liquid-carrying-proof water chamber 31 can be avoided. In some embodiments, the tube type of the first heat exchange tube 33 is the same as the tube type of the second heat exchange tube 34, for example, the diameter of the first heat exchange tube 33 is the same as the diameter of the second heat exchange tube 34. Thus, it is convenient to directly use the heat exchange tube of the existing tube type as the first heat exchange tube 33. In some embodiments, the number of first heat exchange tubes 33 is less than 10% of the number of second heat exchange tubes 34. Alternatively, the number of the first heat exchanging pipes 33 is less than 9% of the number of the second heat exchanging pipes 34. Alternatively, the number of the first heat exchanging pipes 33 is less than 8% of the number of the second heat exchanging pipes 34. Alternatively, the number of the first heat exchanging pipes 33 is less than 7% of the number of the second heat exchanging pipes 34. Alternatively, the number of the first heat exchanging pipes 33 is less than 6% of the number of the second heat exchanging pipes 34. Alternatively, the number of the first heat exchanging pipes 33 is less than 5% of the number of the second heat exchanging pipes 34. Alternatively, the number of the first heat exchanging pipes 33 is less than 4% of the number of the second heat exchanging pipes 34. Alternatively, the number of the first heat exchanging pipes 33 is less than 3% of the number of the second heat exchanging pipes 34. Alternatively, the number of the first heat exchanging pipes 33 is less than 2% of the number of the second heat exchanging pipes 34. Therefore, the first heat exchange tubes 33 which are used as few as possible are used, the pressure of the refrigerant in the cylinder can be always balanced, the phenomena of air suction overheating, overhigh temperature, pressure drop increase and the like can be avoided, and the unit efficiency is not influenced.

In other embodiments, the first heat exchange tube 33 is of a different size than the second heat exchange tube 34, such as the diameter of the first heat exchange tube 33 is different from the diameter of the second heat exchange tube 34. When the diameter of the first heat exchanging pipe 33 is smaller than that of the second heat exchanging pipe 34, the number of the first heat exchanging pipes 33 may be larger than that of the second heat exchanging pipes 34. The number, type and/or inner diameter of the first heat exchange pipes 33 are determined according to practical situations, and are not limited herein.

In some embodiments, the number of first heat exchange tubes 33 may be one, with the first heat exchange tubes 33 entering liquid on one side of the evaporator 22 and exiting liquid on the other side of the evaporator 22. The structure is simple and convenient to set.

In some embodiments, the number of the first heat exchange pipes 33 may be at least two. In some embodiments, where the number of first heat exchange tubes 33 is singular, the first heat exchange tubes 33 feed liquid on one side of the evaporator 22 and discharge liquid on the other side of the evaporator 22. Thus, the pressure drop of the liquid can be improved, and the flow rate of the liquid can be further improved. In other embodiments, where the number of first heat exchange tubes 33 is even, the first heat exchange tubes 33 feed liquid on one side of the evaporator 22, and the evaporator 22 discharges liquid on the same side as the feed liquid. Therefore, a water loop is formed by the water inlet pipe and the water outlet pipe, liquid pressure drop is easy to form, and the liquid flow rate can be improved. Further, for example, when the number of the first heat exchanging pipes 33 is 2, two water flows are used, and it is considered that the pipe pressure drop is relatively large, so that the liquid flow rate is relatively fast, and the first heat exchanging pipes are conveniently installed on the same side, and the operability of a user is strong.

Continuing with FIG. 2, in some embodiments, the condenser 21 includes a primary outlet 36 and a primary inlet 37, and a secondary outlet 38 connected to the primary outlet 36, and a secondary inlet 39 connected to the primary inlet 37, the secondary inlet 39 being connected to one end of the first heat exchange tube 33, and the secondary outlet 38 being connected to the other end of the first heat exchange tube 33. In this way, the condenser 21 allows a part of the liquid to flow into the cooling tower through the main inlet 37, the main outlet 36 allows a part of the liquid to flow into the liquid-tight chamber 31 through the auxiliary outlet 38 for heat exchange, and another part of the liquid flows into the liquid-tight chamber 31 through the auxiliary outlet 38, which is sufficient for the secondary heat exchange in the liquid-tight chamber 31, and after the secondary heat exchange in the liquid-tight chamber 31, the liquid flows from the liquid-tight chamber 31 into the auxiliary inlet 39, thereby forming a liquid circulation. Therefore, the refrigerating cycle of the condenser 21 can be met, the air conditioning performance is guaranteed, the secondary heat exchange of the liquid-carrying-prevention water chamber 31 is met, and the performance of the evaporator 22 is improved. The liquid outlet 23 may include a main outlet 36 and an auxiliary outlet 38. The inlet port 24 may comprise a primary inlet 37 and a secondary inlet 39.

In some embodiments, the aperture of the secondary inlet 39 is smaller than the aperture of the primary inlet 37 and the aperture of the secondary outlet 38 is smaller than the aperture of the primary outlet 36. In this way, the condenser 21 receives most of the liquid through the main inlet 37, the main outlet 36 exchanges heat by receiving most of the liquid into the cooling tower, and another small part of the liquid enters the moisture-proof chamber 31 through the sub outlet 38, so that the secondary heat exchange of the moisture-proof chamber 31 is satisfied.

Fig. 4 is a schematic diagram of one embodiment of the heat exchange assembly 11 of fig. 1. In some embodiments, heat exchange assembly 11 further comprises a pump 41; the pump 41 comprises a pump inlet 42 and a pump outlet 43, the pump inlet 42 is connected with the auxiliary outlet 38 of the condenser 21, the pump outlet 43 is connected with the first heat exchange pipe 33, and the liquid output by the condenser 21 is pumped into the first heat exchange pipe 33. Therefore, the pump 41 added in the heat exchange assembly 11 introduces the liquid effluent of the condenser 21 into the liquid-carrying-proof water chamber 31, so that the waste heat of the liquid can be better utilized to achieve the purpose of saving energy of the whole air conditioning system, but the cost balance between the pump 41 and the energy saving needs to be evaluated. And, the circulation of the liquid through the flow condenser can be completed quickly. Further, one end of the first heat exchanging pipe 33 is directly connected to the liquid inlet 24 of the condenser 21 through the first outlet 312, and the other end of the first heat exchanging pipe 33 is directly connected to the liquid outlet 23 of the condenser 21 through the first inlet 311 via the pump 41. In some embodiments, the liquid temperature at this time of the first inlet 311 may be 35 degrees celsius.

In other embodiments, the other end of the first heat exchanging pipe 33 is directly connected to the liquid outlet 23 of the condenser 21 through the first inlet 311, and one end of the first heat exchanging pipe 33 is directly connected to the liquid inlet 24 of the condenser 21 through the first outlet 312. Therefore, liquid with certain temperature is led out from the liquid outlet 23 of the condenser 21 to the liquid-carrying-preventing water chamber 31, the liquid carrying is reduced through the heat exchange of the first heat exchange tube 33, the flowing of the liquid circulating through the condenser 21 drives the water inlet and outlet circulation of the first heat exchange tube 33 in the liquid-carrying-preventing water chamber 31, and extra power equipment is not needed. In other embodiments, the other end of the first heat exchanging pipe 33 is connected to the liquid outlet 23 of the condenser 21 through the first outlet 312, and one end of the first heat exchanging pipe 33 is connected to the liquid inlet 24 of the condenser 21 through the first inlet 311. Other implementations of the first heat exchange tube 33 and the condenser 21 are possible.

In the embodiment of the present application, the air conditioning system includes a controller (not shown) and a temperature detector (not shown), the controller includes a temperature detection terminal (not shown) connected to the temperature detector; the heat exchange assembly 11 further includes a control valve (not shown) disposed between the first heat exchange tube 33 and the auxiliary outlet 38 of the condenser 21, the control valve being connected to a controller, the temperature detector being disposed between the auxiliary outlet 38 of the condenser 21 and the first heat exchange tube 33 to detect the temperature of the liquid circulating from the condenser 21, and the controller controlling the opening of the control valve to control the flow rate of the liquid flowing into the first heat exchange tube 33 when the temperature is greater than a threshold value. In this way, the temperature detector that can be provided between the auxiliary outlet 38 of the condenser 21 and the first heat exchange tube 33 monitors the temperature of the air flowing out of the auxiliary outlet 38 of the condenser 21, and controls the discharge temperature of the liquid-entrainment prevention water chamber 31 by controlling the flow rate of the water for liquid-entrainment prevention heat exchange. In other embodiments, a temperature detector is disposed at the refrigerant outlet, and the flow rate of water for heat exchange in the liquid-carrying water-proof chamber 31 is controlled by a control valve according to the detected exhaust superheat degree. Other temperature detectors may be disposed, which is not limited to this example.

In some embodiments, the control valve comprises a solenoid valve (not shown). The flow of the liquid from the auxiliary outlet 38 of the condenser 21 to the first heat exchange pipe 33 is adjusted by an electromagnetic valve, and the structure is simple.

As shown in fig. 2 to 4, the heat exchange assembly 11 further includes tube plates 44, and the tube plates 44 are respectively inserted into two ends of the first heat exchange tube 33 and two ends of the second heat exchange tube 34; the first heat exchange tube 33 and the second heat exchange tube 34 respectively comprise a water inlet tube and a water outlet tube; the tube sheet 44 includes a water-containing space, the water inlet tube, the water-containing space and the water outlet tube communicating to form a water circuit.

In some embodiments, the first heat exchanging pipe 33 and the second heat exchanging pipe 34 are respectively distributed in correspondence with holes on the tube plate 44, and the holes are communicated with the water inlet pipe, the water containing space and the water outlet pipe. In some embodiments, the first heat exchanging pipe 33 and the second heat exchanging pipe 34 are respectively connected to the tube plate 44 by bolts.

In some embodiments, the evaporator 22 is a cylindrical structure. So, the tubular construction of evaporimeter can improve the holding power to, first heat exchange tube 33 is in evaporimeter 22's barrel, and refrigerant pressure is balanced all the time in the barrel, and the overheated, the pressure drop increase etc. of breathing in can not appear, does not influence unit efficiency. In other embodiments, the evaporator 22 is cube-shaped. Such a cube face is sufficient to support the evaporator.

In some embodiments, the heat exchange assembly 11 includes a tube supporting assembly 45, and the tube supporting assembly 45 is disposed through the first heat exchange tube 33 and the second heat exchange tube 34 respectively. Thus, the first heat exchange tube 33 and the second heat exchange tube 34 can be supported to stabilize the first heat exchange tube 33 and the second heat exchange tube 34, thereby preventing the first heat exchange tube 33 and the second heat exchange tube 34 from shaking. In some embodiments, a tube support assembly 45 is disposed between the tubesheets 44 at both ends. Thus, if the first heat exchange tube 33 and the second heat exchange tube 34 are long enough, the first heat exchange tube 33 and the second heat exchange tube 34 can be better supported, which is more beneficial to improving the rigidity between the first heat exchange tube 33 and the second heat exchange tube 34. In some embodiments, the tube support assembly 45 may be a plate-shaped structure having openings for the heat exchange tubes to pass through.

In other embodiments, the tube support assembly 45 includes a tube support surface that is parallel to the tube sheet 44 and a fixation surface perpendicular to the tube support surface that provides stability to the tube support assembly fixation itself.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. The utility model provides a heat exchange assemblies, is applied to air conditioning system which characterized in that includes:

the condenser comprises a liquid outlet and a liquid inlet;

2. The heat exchange assembly of claim 1 wherein the number of first heat exchange tubes is no more than the number of second heat exchange tubes.

3. A heat exchange assembly as recited in claim 1 wherein said condenser includes a primary outlet and a primary inlet, and a secondary outlet connected to said primary outlet and a secondary inlet connected to said primary inlet, said secondary inlet being connected to one end of said first heat exchange tube, said secondary outlet being connected to the other end of said first heat exchange tube.

4. A heat exchange assembly according to claim 3, wherein the aperture of the secondary inlet is smaller than the aperture of the primary inlet, and the aperture of the secondary outlet is smaller than the aperture of the primary outlet.

5. The heat exchange assembly of claim 3, further comprising a pump;

6. The heat exchange assembly of claim 3, wherein the air conditioning system comprises a controller and a temperature detector, the controller comprising a temperature detection end, the temperature detection end being connected to the temperature detector;

7. The heat exchange assembly of claim 1, further comprising tube plates inserted at both ends of the first heat exchange tube and at both ends of the second heat exchange tube, respectively; the first heat exchange tube and the second heat exchange tube respectively comprise a water inlet tube and a water outlet tube; the tube plate comprises a water containing space, and the water inlet pipe is communicated with the water outlet pipe to form a water loop.

8. The heat exchange assembly of claim 1 wherein the evaporator is of a cylindrical configuration.

9. The heat exchange assembly of claim 1, wherein the heat exchange assembly comprises a tube support assembly, the tube support assembly being disposed through the first heat exchange tube and the second heat exchange tube, respectively.

10. An air conditioning system comprising a heat exchange assembly as claimed in any one of claims 1 to 9.