CN219713709U - Heat exchange tube section of air conditioning system and air conditioning system - Google Patents

Abstract

The utility model relates to the technical field of air conditioners, in particular to a heat exchange tube section of an air conditioning system and the air conditioning system. The heat exchange tube section of the air conditioning system comprises a tube body, wherein a heat conduction wall is formed in the tube body, and the heat conduction wall is divided into at least two water channels and at least two refrigerant channels in the tube body; the water channel is used for being connected with the water circulation loop, and the refrigerant channel is used for being connected with the refrigerant loop; the water channels and the refrigerant channels are alternately distributed around the central axis of the tube body. The heat exchange tube section is applied to an air conditioning system, and can realize recovery and utilization of energy lost in the condensation process of the air conditioning system, so that the energy utilization rate is improved.

Description

Heat exchange tube section of air conditioning system and air conditioning system

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a heat exchange tube section of an air conditioning system and the air conditioning system.

Background

Air conditioners are an indispensable part of modern life, and the types of home air conditioners are classified into many types, including wall-mounted air conditioners, cabinet air conditioners, window air conditioners, ceiling air conditioners, and the like.

With the continuous development of technology and the popularization of application surfaces of air conditioners, people put higher energy efficiency requirements on the air conditioners. Under the large background of energy conservation and emission reduction, the improvement of energy utilization efficiency has become a focus of current attention, and the heat released by the condenser of the traditional air conditioner is directly released into the outside air under the condition of not being utilized, so that energy waste is caused.

Disclosure of Invention

The utility model provides a heat exchange tube section of an air conditioning system and the air conditioning system, which are used for solving the defect of low energy utilization efficiency of an air conditioner in the prior art, realizing the recovery and utilization of energy lost by the air conditioner and improving the energy utilization rate.

The utility model provides a heat exchange tube section of an air conditioning system, which comprises a tube body, wherein a heat conducting wall is formed in the tube body, and at least two water channels and at least two refrigerant channels are separated in the tube body by the heat conducting wall; the water channel is used for being connected with the water circulation loop, and the refrigerant channel is used for being connected with the refrigerant loop; the water channels and the refrigerant channels are alternately distributed around the central axis of the tube body.

According to the heat exchange tube section of the air conditioning system, the two ends of the tube body are provided with the confluence device, and the confluence device comprises a branch tube communicated with the refrigerant channel and a main tube capable of being connected into the refrigerant loop.

According to the heat exchange tube section of the air conditioning system, the central axis of the main tube coincides with the central axis of the tube body; and/or the flow area of the header pipe is equal to the sum of the flow areas of the refrigerant channels in the tube body.

According to the heat exchange tube section of the air conditioning system, the heat preservation layer is arranged on the outer peripheral surface of the tube body.

The utility model also provides an air conditioning system, which comprises a refrigerant loop and a water circulation loop; the refrigerant loop is connected with a compressor, a condenser, a throttle valve and an evaporator in series, and the water circulation loop is provided with a water container and a water pump; the water container is provided with a water inlet and a water outlet; the air conditioning system comprises a heat exchange tube section, wherein the heat exchange tube section is the heat exchange tube section of the air conditioning system, a refrigerant channel of the heat exchange tube section is communicated between the condenser and the throttle valve, and a water channel of the heat exchange tube section is communicated between the water pump and the water container.

According to the air conditioning system, the water circulation loop comprises the heat conduction pipeline at the upstream position of the heat exchange pipe section, and the heat conduction pipeline is arranged adjacent to the computer board of the air conditioner so as to be capable of absorbing heat released by the computer board during operation.

According to the air conditioning system, the heat conducting pipeline is in a coil shape, or a micro-channel heat exchanger is arranged on the heat conducting pipeline.

According to an air conditioning system of the present utility model, the water circulation circuit includes parallel pipes connected in parallel with the heat conduction pipe, and one of the heat conduction pipe and the parallel pipe is connected to shut off a flow path.

According to the air conditioning system, a water temperature sensor is arranged at the water outlet position of the water pump; and/or a reversing valve is arranged at the water outlet position of the water pump, and the reversing valve is used for controlling one of the heat conduction pipeline and the parallel pipeline to be communicated.

According to an air conditioning system of the present utility model, the flow directions of the fluid in the water passage and the refrigerant passage are opposite.

According to the heat exchange tube section of the air conditioning system and the air conditioning system, the water channels and the refrigerant channels of the heat exchange tube section are alternately distributed around the central axis of the tube body, so that water in the water circulation loop and refrigerant in the refrigerant loop can exchange heat in the heat exchange tube section through the heat conduction effect of the heat conduction wall, and the temperature of the refrigerant can be reduced, and hot water is generated. The heat exchange tube section is applied to an air conditioning system, and can realize recovery and utilization of energy lost in the condensation process of the air conditioning system, so that the energy utilization rate is improved.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic flow path diagram of an air conditioning system provided by the present utility model;

FIG. 2 is a schematic cross-sectional view of a heat exchanger tube section of an air conditioning system according to the present utility model;

FIG. 3 is a perspective view of a heat exchange tube section of the air conditioning system provided by the present utility model;

FIG. 4 is a schematic flow diagram of a refrigerant channel of a heat exchange tube section of an air conditioning system according to the present utility model;

fig. 5 is a schematic flow diagram of a water channel of a heat exchange tube section of an air conditioning system according to the present utility model.

Reference numerals:

10: a refrigerant circuit; 11: a compressor; 12: a condenser; 13: a throttle valve; 14: an evaporator; 15: a computer board; 20: a water circulation circuit; 21: a water container; 22: a water pump; 23: a water inlet; 24: a water outlet; 25: a heat conducting pipeline; 26: a water temperature sensor; 27: a reversing valve; 30: a heat exchange tube section; 31: a tube body; 32: a heat conducting wall; 33: a water passage; 34: a refrigerant passage; 35: a combiner; 351: a branch pipe; 352: a header pipe; 36: and a heat preservation layer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The conventional household air conditioner generally includes a refrigerant circuit and a computer board for controlling the operation of the air conditioner, as shown in fig. 1, a compressor 11 on the refrigerant circuit 10 sucks low-pressure refrigerant vapor from an evaporator 14, makes the low-pressure refrigerant vapor raise in pressure, sends the low-pressure refrigerant vapor into a condenser 12, condenses the low-pressure refrigerant liquid into high-pressure refrigerant liquid in the condenser 12, throttles the low-pressure refrigerant liquid by a throttle valve 13, sends the low-pressure refrigerant liquid into the evaporator 14, absorbs heat in the evaporator and evaporates the low-pressure refrigerant vapor, and thus completes a refrigeration cycle.

The cooling efficiency of the air conditioner is affected by the heat radiation efficiency of the condenser 12, and the cooling effect is better as the temperature of the refrigerant is lower before entering the evaporator 14. In addition, heat loss during cooling of the refrigerant and heat dissipation during operation of the computer board of the air conditioner all result in energy waste. In consideration of the above factors, the utility model provides the heat exchange tube section of the air conditioning system and the air conditioning system, which can improve the refrigerating performance of the air conditioner and realize the recovery and utilization of the energy lost by the air conditioner.

The heat exchange pipe section of the air conditioning system and the air conditioning system according to the preferred embodiment of the present utility model will be described with reference to fig. 1 to 5.

As shown in fig. 1, the air conditioning system includes a refrigerant circuit 10 and a computer board 15, and a compressor 11, a condenser 12, a throttle valve 13, and an evaporator 14 are sequentially provided on the refrigerant circuit 10 in the refrigerant flow direction. The throttle valve 13 can also be replaced by a capillary tube.

The water circulation circuit 20 is provided with a water container 21, a water pump 22 and a heat conduction pipeline 25 in this order along the water flowing direction. The water container 21 is also provided with a water inlet 23 and a water outlet 24. The water inlet 23 may be connected to a tap water line or other source of water to enable water to be added to the water reservoir 21; the water outlet 24 may be connected to a household water scene such as a bathroom or a kitchen, and the water after the temperature is raised in the water container 21 may be further utilized (e.g., washed).

The water circulation loop 20 and the refrigerant loop 10 extend through the heat exchange pipe section 30, respectively, so that water within the water circulation loop 20 can absorb heat of the refrigerant through the heat exchange pipe section 30. The heat conducting pipeline 25 is arranged at the adjacent position of the computer board 15, so that water flowing in the heat conducting pipeline 25 can absorb heat release when the computer board operates. The water circulation loop 20 is provided with a reversing valve 27, and can control whether water flows through the heat conducting pipeline 25, so that the water supply to the heat conducting pipeline 25 is stopped under the condition of higher water temperature, and the temperature of the computer board 15 is prevented from rising due to the higher water temperature.

As shown in fig. 2 to 5, the heat exchange tube section 30 preferably includes a tube body 31 and a heat conducting wall 32 inside the tube body 31, and the tube body 31 and the heat conducting wall 32 are preferably integrally formed. The heat-conducting wall 32 isolates and does not insulate the water in the water channel 33 from the refrigerant in the refrigerant channel 34, so that the heat of the refrigerant is conducted into the water under the heat conduction effect, the water is heated, the temperature of the refrigerant is further reduced, and the refrigerating effect is improved.

In the actual operation of the air conditioning system, the compressor 11 compresses the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and then sends the gaseous refrigerant to the condenser 12 (outdoor unit) to dissipate heat and then to become a cooled liquid refrigerant. Wherein the temperature at the inlet of the condenser 12 is generally between 70 and 90 degrees, the temperature at the middle of the condenser 12 is generally around 50 degrees, and the temperature at the outlet of the condenser 12 is generally between 42 and 50 degrees.

In the heat exchange process, a part of heat of the refrigerant is taken away by air flowing outside in the condenser 12, and the water in the water circulation loop 20 is warmed up by a part of heat conduction effect, so that the refrigerating capacity of the air conditioner is improved, and the heat of the refrigerant is further recovered and utilized.

In order to better understand the above technical solution, the following describes a heat exchange tube section of the air conditioning system and each specific embodiment of the air conditioning system.

The heat exchange tube section of the air conditioning system comprises a tube body 31, wherein a heat conducting wall 32 is formed in the tube body 31, and the heat conducting wall 32 is divided into at least two water channels 33 and at least two refrigerant channels 34 in the tube body 31; the water channel 33 is used for being connected into the water circulation loop 20, and the refrigerant channel 34 is used for being connected into the refrigerant loop 10; the water passages 33 and the refrigerant passages 34 are alternately distributed around the central axis of the tube body 31.

The water passage 33 and the refrigerant passage 34 passing through the heat exchange tube section are alternately distributed around the central axis of the tube body, so that the water in the water circulation circuit 20 and the refrigerant in the refrigerant circuit 10 can exchange heat by the heat conduction action of the heat conduction wall 32 in the heat exchange tube section, and the temperature of the refrigerant can be reduced to generate hot water. The heat exchange tube section is applied to an air conditioning system, and can realize recovery and utilization of energy lost in the condensation process of the air conditioning system, so that the energy utilization rate is improved.

According to a heat exchange tube section of an air conditioning system of the present utility model, both ends of a tube body 31 are provided with a header 35, and the header 35 includes a branch pipe 351 communicating with a refrigerant passage 34 and a header pipe 352 capable of accessing a refrigerant circuit 10.

As shown in fig. 3 and 4, the refrigerant in the refrigerant circuit 10 can enter through the manifold 352 of the header 35 at one end of the tube body 31 and be split at the branch 351 into the respective refrigerant channels 34 of the heat exchange tube sections. Finally, at the other end of the header 35, the refrigerant enters the branch pipes 351, respectively, and merges at the header 352 before returning to the refrigerant circuit 10.

On the other hand, as shown in fig. 5, the water passages 33 may be connected to the water circulation circuits 20, respectively, so that water in the water circulation circuits 20 may directly flow along the water passages 33.

In a heat exchange tube section of an air conditioning system according to the present utility model, the central axis of the manifold 352 preferably coincides with the central axis of the tube body 31, so that the resistance to the refrigerant as it enters and exits the heat exchange tube section is reduced as much as possible, preventing affecting the flow capacity of the refrigerant in the refrigerant circuit 10.

Preferably, the flow area of the manifold 352 of the heat exchange tube sections is equal to the sum of the flow areas of the refrigerant channels 34 within the tubes 31.

In order to ensure that the refrigerant and the water can exchange heat sufficiently, according to the heat exchange tube section of the air conditioning system of the present utility model, the outer circumferential surface of the tube body 31 is preferably provided with a heat insulating layer 36 of a heat insulating material to reduce heat exchange between the outer tube wall of the tube body 31 and the air.

Based on the heat exchange tube section of the air conditioning system described above, the present utility model provides an air conditioning system comprising a refrigerant circuit 10 and a water circulation circuit 20; the refrigerant loop 10 is connected with a compressor 11, a condenser 12, a throttle valve 13 and an evaporator 14 in series, and the water circulation loop 20 is provided with a water container 21 and a water pump 22; the water container 21 is provided with a water inlet 23 and a water outlet 24.

The air conditioning system comprises a heat exchange tube section 30, wherein the heat exchange tube section 30 is a heat exchange tube section of any one of the air conditioning systems, a refrigerant channel 34 of the heat exchange tube section 30 is communicated between the condenser 12 and the throttle valve 13, and a water channel 33 of the heat exchange tube section 30 is communicated between the water pump 22 and the water container 21.

The water is supplied through the water container 21 and the water pump 22, so that the water flows through the heat exchange pipe section 30, thereby taking away the heat of the refrigerant flowing out of the condenser 12, on the one hand, improving the refrigerating efficiency of the air conditioner, and on the other hand, the hot water returned to the water container after heat exchange can be provided for household use. The scheme realizes the recovery and the utilization of heat energy lost by the refrigerant of the air conditioner, and improves the refrigeration performance of the air conditioner by further cooling the refrigerant by water.

According to an air conditioning system of the present utility model, the water circulation loop 20 includes a heat conducting pipe 25 at a position upstream of the heat exchange pipe section 30, and the heat conducting pipe 25 is disposed adjacent to the computer board 15 of the air conditioner so as to be capable of absorbing heat released by the computer board 15 during operation.

During operation of the air conditioner, the computer board 15 as an air conditioner control module typically releases heat using an air cooling device during operation. According to the scheme, cold water led out from the water container 21 by the water pump 22 can be firstly subjected to heat exchange with the computer board 15 through the heat conducting pipeline 25, so that the computer board 15 is cooled, frequency limitation caused by temperature rise is prevented, and heat released by the computer board 15 is recovered. The computer board 15 combining the water cooling and the original air cooling heat dissipation forms can exert more reliable performance in a high-frequency working state.

According to an air conditioning system of the present utility model, the heat conducting pipe 25 is in the shape of a coil; or preferably, the heat conducting pipe 25 is provided with a micro-channel heat exchanger.

A coil-shaped heat transfer conduit 25 may be provided around the computer board 15 to absorb heat around the computer board 15 during water flow. The micro-channel heat exchanger is preferably made of materials with higher heat conductivity coefficient (such as polymethyl methacrylate, nickel, copper, stainless steel, ceramic, silicon, si3N4, aluminum and the like), and the micro-channel heat exchanger can be more reliably attached to the computer board 15 by using the installation and fixation structure of the micro-channel heat exchanger so as to provide more reliable and efficient heat exchange efficiency.

According to an air conditioning system of the present utility model, the water circulation circuit 20 may further include a parallel line connected in parallel with the heat conduction line 25, and in the case where one of the heat conduction line 25 and the parallel line is connected, the other shuts off the flow path.

As shown in fig. 1, according to the parallel pipeline, a user can select whether the water in the water circulation loop 20 directly flows to the heat exchange pipe section 30 or flows to the heat exchange pipe section 30 after exchanging heat with the computer board 15 through the heat conducting pipeline 25 during the starting process of the water pump 22. When the parallel pipeline is connected, the water pump 22 starts to pump water in the water container 21 to the heat exchange pipe section 30, exchanges heat with the refrigerant in the refrigerant circuit 10 in the heat exchange pipe section 30, and returns to the water container 21, thereby completing the heat exchange cycle. When the heat conducting pipeline 25 is connected, the water pump 22 starts to pump the water in the water container 21 to the heat conducting pipeline 25, absorbs the heat released by the computer board 15 in the heat conducting pipeline 25, flows to the heat exchange pipe section 30, exchanges heat with the refrigerant of the refrigerant circuit 10 in the heat exchange pipe section 30, and returns to the water container 21, thereby completing the heat exchange cycle.

The above-described switching manner of the water circulation circuit 20 may be determined based on the water temperature, and the parallel pipe is connected when the water temperature is high, and the heat conduction pipe 25 is connected when the water temperature is low.

According to an air conditioning system of the present utility model, a water temperature sensor 26 is preferably provided at the water outlet position of the water pump 22; and/or a reversing valve 27 is arranged at the water outlet position of the water pump 22, and the reversing valve 27 is used for controlling one of the heat conducting pipeline 25 and the parallel pipeline to be communicated.

The computer board 15 is usually provided with a temperature measuring element (such as a thermocouple) for monitoring the temperature of the computer board 15 in real time, and the water temperature sensor 26 measures the water temperature at the water outlet position of the water pump 22 and compares the water temperature with the temperature of the computer board 15, so that the switching state of the reversing valve 27 can be controlled more accurately. It will be appreciated that the heat transfer conduit 25 may be selectively turned on only when the water temperature is less than the temperature of the computer board 15, preventing the higher water temperature from adversely affecting the performance of the computer board 15.

In application, the computer board 15 has a temperature T1 and a water temperature T2, and a rated difference T3 can be set. When T1-T2 is more than T3, the heat conducting pipeline 25 is communicated, and the heat conducting pipeline 25 and the air cooling heat dissipation equipment cool the computer board 15 together; when T1-T2 is less than or equal to T3, the parallel pipelines are communicated, water does not pass through the heat conducting pipeline 25, and the air cooling heat dissipation equipment is used for cooling the computer board 15. Wherein the nominal difference T3 is preferably any value from 0 ℃ to 10 ℃, for example the nominal difference T3 is 5 ℃.

According to an air conditioning system of the present utility model, the flow directions of the fluid in the water passage 33 and the refrigerant passage 34 of the heat exchange tube section 30 are opposite.

After the refrigerant enters the heat exchange tube section 30, the temperature gradually decreases along with heat exchange with water, and after the water enters the heat exchange tube section 30, the temperature gradually increases along with heat absorption of the refrigerant. Based on this, the flow directions of the fluid in the water passage 33 and the refrigerant passage 34 are set to be opposite, so that the temperature difference between the water and the refrigerant can be always maintained, and a relatively stable heat exchange efficiency can be realized in the heat exchange tube section 30.

According to the air conditioning system of the present utility model, the water container 21 is preferably provided with a water level sensor for measuring the water level of the water container, and the water level sensor is used for monitoring the water level in the water container 21, so that a user or a control system can timely judge whether water needs to be replenished into the water container 21, and under the condition that the water outlet 24 is not opened, the hidden trouble of leakage of the water circulation loop 20 can be timely found according to the change of the water level, and the safety performance of the device is improved.

According to an air conditioning system of the present utility model, a condensed water recovery line is preferably provided between the water inlet 23 and the evaporator 14 to enable condensed water generated by the evaporator 14 to be introduced into the water container 21. The utilization of the recovered condensed water as one of the water sources of the water circulation loop 20 not only improves the utilization rate of water resources, but also solves the problem of discharging the condensed water of the air conditioner.

In the running process of the air conditioning system, the water circulation loop 20 and the heat exchange tube section 30 can absorb the heat of the refrigerant, so that a better refrigerating effect is provided, the temperature of the computer board 15 of the air conditioning system can be reliably maintained, the performance of the air conditioning system is fully exerted, and the recycled heat can be utilized to prepare domestic hot water while the air conditioning system is running. Therefore, according to the air conditioning system provided by the utility model, the recovery and the utilization of heat energy lost by the refrigerant and the computer board are realized, and the energy utilization rate and the performance of the air conditioning system are improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The heat exchange tube section of the air conditioning system is characterized by comprising a tube body (31), wherein a heat conducting wall (32) is formed in the tube body (31), and the heat conducting wall (32) is divided into at least two water channels (33) and at least two refrigerant channels (34) in the tube body (31);

the water channel (33) is used for being connected to the water circulation loop (20), and the refrigerant channel (34) is used for being connected to the refrigerant loop (10);

the water channels (33) and the refrigerant channels (34) are alternately distributed around the central axis of the tube body (31).

2. Heat exchange tube section of an air conditioning system according to claim 1, characterized in that the two ends of the tube body (31) are provided with a header (35), the header (35) comprising a branch tube (351) communicating with the refrigerant channel (34) and a header tube (352) accessible to the refrigerant circuit (10).

3. The heat exchange tube section of an air conditioning system according to claim 2, characterized in that the central axis of the header pipe (352) coincides with the central axis of the tube body (31); and/or the flow area of the header pipe (352) is equal to the sum of the flow areas of the refrigerant channels (34) in the tube body (31).

4. A heat exchanger tube section of an air conditioning system according to any of claims 1-3, characterized in that a heat insulating layer (36) is provided on the outer circumferential surface of the tube body (31).

5. An air conditioning system, characterized by comprising a refrigerant circuit (10) and a water circulation circuit (20);

the refrigerant loop (10) is connected with a compressor (11), a condenser (12), a throttle valve (13) and an evaporator (14) in series, and the water circulation loop (20) is provided with a water container (21) and a water pump (22);

the water container (21) is provided with a water inlet (23) and a water outlet (24);

the air conditioning system comprises a heat exchange tube section (30), wherein the heat exchange tube section (30) is a heat exchange tube section of the air conditioning system according to any one of claims 1 to 4, a refrigerant channel (34) of the heat exchange tube section (30) is communicated between the condenser (12) and the throttle valve (13), and a water channel (33) of the heat exchange tube section (30) is communicated between the water pump (22) and the water container (21).

6. An air conditioning system according to claim 5, characterized in that, at a position upstream of the heat exchange tube section (30), the water circulation circuit (20) comprises a heat conducting pipe (25), the heat conducting pipe (25) being arranged adjacent to a computer board (15) of the air conditioner so as to be able to absorb heat released by the computer board (15) during operation.

7. An air conditioning system according to claim 6, characterized in that the heat conducting pipe (25) is in the shape of a coil, or that a microchannel heat exchanger is provided on the heat conducting pipe (25).

8. The air conditioning system according to claim 6, characterized in that the water circulation circuit (20) comprises parallel pipes connected in parallel with the heat conducting pipe (25), one of the heat conducting pipe (25) and the parallel pipe being in communication with the other one cutting off the flow path.

9. The air conditioning system according to claim 8, characterized in that a water temperature sensor (26) is provided at the water outlet position of the water pump (22); and/or a reversing valve (27) is arranged at the water outlet position of the water pump (22), and the reversing valve (27) is used for controlling one of the heat conducting pipeline (25) and the parallel pipeline to be communicated.

10. An air conditioning system according to any of claims 5-9, characterized in that the fluid flow direction in the water channel (33) and the refrigerant channel (34) is opposite.