Air conditioning system based on shallow water heat exchange well

Abstract

The air conditioning system based on the shallow water heat exchange well comprises a shallow water well heat exchange piece, the exterior of the shallow water well heat exchange piece makes contact with a shallow water well wall, the interior of the shallow water well heat exchange piece makes contact with well water, the shallow water well heat exchange piece communicates with a water storage tank through a water inlet pipe, and the water storage tank communicates with an indoor tail end heat exchanger through a water outlet pipe. The indoor tail end heat exchanger is communicated with the water storage tank through a water storage tank water return pipe and further communicated with the shallow well heat exchange piece through a heat exchange well water return pipe, a first valve is arranged on the water storage tank water return pipe, and a second valve is arranged on the heat exchange well water return pipe. The first valve and the second valve are selected to be opened by comparing the return water temperature in the water return pipe of the water storage tank with the well water temperature; a coil pipe and a temperature measuring element are arranged in the water storage tank, and the coil pipe is communicated with an outdoor hanging unit of the household split type air conditioner. The air conditioner energy consumption can be saved, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning and refrigeration, in particular to an air conditioning system based on a shallow water heat exchange well. Background Art

[0002] With the continuous consumption and gradual depletion of fossil energy, and the continuous increase in global carbon dioxide emissions, the challenges and impacts faced are far-reaching. Not only will it trigger extreme climate events and affect biodiversity, it will also bring challenges to economies and industries that rely on fossil energy, leading to reduced productivity and supply chain disruptions. Therefore, how to reduce the consumption of fossil energy and use renewable energy under the "dual carbon" policy has become a major choice that mankind has to make.

[0003] However, in the hot summer, air conditioning usually requires a lot of electricity, which directly affects the overall energy consumption, which is why air conditioning energy consumption remains high in the hot summer, making air conditioning the leader in building energy consumption. How to reduce air conditioning energy consumption has become a difficult problem that needs to be solved in the air conditioning and refrigeration industry, and it is also a very critical part of achieving the "dual carbon" policy.

[0004] In recent years, scientific and technological researchers like to use renewable energy or clean energy to drive the refrigeration of air conditioners, such as solar air conditioners, gas air conditioners, ground source heat pumps, water source heat pumps, etc., and even use high-temperature exhaust gas, high-temperature wastewater, etc. to recover waste heat to drive air conditioners. It can be said that there are various forms, which have greatly promoted the development of air conditioners, saved energy consumption and even led to good economic benefits. However, most of the air conditioner driving solutions given above have the problem of high cost. As an ancient and long-standing drinking water well, shallow water wells have gradually faded out of people's sight, but as a natural "cold storage", they are also a renewable energy source. With people's attention to renewable energy, it is believed that they will be rejuvenated. Based on this, by structurally transforming the original shallow water well into a heat exchange well that provides a cold source for air conditioners, the energy consumption of air conditioners can be greatly saved, and it is green and environmentally friendly, which is of great significance. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an air-conditioning system based on a shallow water heat exchange well, which is suitable for rural residences, villas, small office buildings and other places where wells are convenient to dig. It does not occupy ground space, has a simple structure, is not expensive, greatly saves energy, has a wide range of applications, has good economic benefit potential, and has promising future prospects.

[0006] In order to solve the above technical problems, the implementation scheme provided by the present invention is to provide an air conditioning system based on a shallow water heat exchange well, including a shallow water well heat exchange element, which is arranged in the shallow water well, and the outer part of the shallow water well heat exchange element is in contact with the shallow water well wall, and the inner part of the shallow water well heat exchange element is in contact with water;

[0007] A water storage tank is used to store the circulating water after refrigeration. The water storage tank is connected to the shallow water well heat exchanger through a water inlet pipe. A coil and a temperature measuring element are arranged inside the water storage tank. The coil is connected to the outdoor hanging unit of the household split air conditioner, and is used to further cool the water stored in the water storage tank by starting the outdoor hanging unit;

[0008] The indoor terminal heat exchanger is connected to the water tank through a water outlet pipe and a water pump. The indoor terminal heat exchanger is connected to the water tank through a water return pipe of the water tank. A first valve is provided on the water return pipe of the water tank. The indoor terminal heat exchanger is also connected to the shallow water well heat exchange element through a heat exchange well return pipe. A second valve is provided on the heat exchange well return pipe. The output water after heat exchange between the indoor terminal heat exchanger and the room air is circulated and refrigerated through the shallow water well heat exchange element.

[0009] When the return water temperature in the return pipe of the water storage tank is lower than the well water temperature, the first valve is opened and the second valve is closed; when the return water temperature in the return pipe of the water storage tank is higher than the well water temperature, the first valve is closed and the second valve is opened.

[0010] Preferably, the shallow water well heat exchanger includes a circular hollow shell, which is divided into multiple water channels vertically by partitions, wherein the first water channel is connected to the indoor terminal heat exchanger through a heat exchange well return pipe, and every two adjacent water channels are provided with water holes, and the last water channel adjacent to the first water channel is provided with a water channel outlet, and the water channel outlet is connected to the water storage tank through a water inlet pipe.

[0011] Preferably, the multiple water holes opened on the multiple water channels are connected in sequence and arranged in a serpentine shape.

[0012] Preferably, the outer side wall of the annular hollow shell is in contact with the well wall of the shallow water well heat exchanger, and the inner side wall of the annular hollow shell is in contact with the well water.

[0013] Preferably, the shallow water well heat exchanger is a plurality of concentrically arranged annular hollow shells, the plurality of annular hollow shells are interconnected, the annular hollow shell farthest from the center of the circle is connected to the water outlet of the indoor terminal heat exchanger through the heat exchange well return pipe, and the annular hollow shell closest to the center of the circle is connected to the water storage tank through the water inlet pipe.

[0014] Preferably, the multiple annular hollow shells are divided into multiple water channels vertically by partitions, wherein the first water channel of the annular hollow shell farthest from the center of the circle is connected to the indoor terminal heat exchanger through the return pipe of the heat exchange well, and every two adjacent water channels are provided with water holes, and the last water channel of the annular hollow shell farthest from the center of the circle is connected to the first water channel of another adjacent annular hollow shell through the water channel outlet, and every two adjacent water channels in the annular hollow shell are provided with water holes, and the last water channel in the annular hollow shell is connected to the first water channel of another adjacent annular hollow shell through the water channel outlet, and multiple annular hollow shells are connected according to this connection method until the water channel outlet of the last water channel of the annular hollow shell closest to the center of the circle is connected to the water storage tank through the water inlet pipe.

[0015] Preferably, the multiple water holes opened on the multiple water channels of each of the annular hollow shells are connected in sequence and arranged in a serpentine shape.

[0016] Preferably, a plurality of hollow conical structures are provided on the inner wall of each water channel, the top of the conical structure is sealed, the bottom of the conical structure is open, and the top of the conical structure is fixed on the inner wall of each water channel along the radius direction of the circular hollow shell.

[0017] Preferably, a plurality of cones are evenly distributed on the peripheral wall of the cone structure.

[0018] Preferably, the shallow water well heat exchanger can also be connected to the outdoor hanging machine through the heat exchange well outlet pipe, so as to exchange heat with the evaporator in the outdoor hanging machine, so that the heat after heat exchange can be sent into the room through the indoor hanging machine, and a third valve is provided on the heat exchange well outlet pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention makes full use of the renewable energy of shallow underground water, and determines whether to turn on the split air conditioner according to the required cooling capacity of the room. When the cooling capacity required for the cooling room is small, only a small amount of power such as a water pump is needed to directly cool the room without turning on the split air conditioner; when the cooling capacity required for the cooling room is large, the household split air conditioner can be turned on to compensate for the cooling capacity, and the normal cooling demand of the room can still be ensured. No matter which mode is used, the energy consumption of the air conditioner can be reduced to the maximum extent, and carbon emissions can be reduced.

[0021] 2. The shallow water well heat exchanger provided in the present invention adopts a structure of three or more layers nested from the outside to the inside, which itself strengthens the contact area between the heat exchange well and the well water, and through multiple water channels, creates a very long water flow path, so that the water in the water channel can fully exchange heat with the soil and well water, greatly enhancing the heat exchange effect.

[0022] 3. The present invention arranges a large number of conical structures on the well wall of the shallow water well heat exchanger, and the outer surface of the conical structure is covered with small cones, which not only increases the area of ​​the water channel, but also increases the disturbance of the water flow, enhances the turbulence, forms turbulence, and easily forms more small eddies. Part of the boundary layer of the fluid is destroyed, which greatly enhances the heat exchange with the soil or well water and improves the heat exchange efficiency of the shallow water well heat exchanger.

[0023] 4. The shallow water well heat exchanger provided by the present invention does not occupy ground space, has a simple structure, and is not expensive. It is suitable for use in places where wells can be dug, has a wide range of applications, has great economic benefit potential, and has promising future prospects.

[0024] 5. The shallow water well heat exchanger provided by the present invention can be used not only for air conditioning cooling in summer, but also for air conditioning heating in winter. This allows the shallow water well heat exchanger to achieve a dynamic balance between heat input and output in both winter and summer, which is beneficial to the long-term use of the shallow water well heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a refrigeration and air conditioning system of a shallow water well heat exchanger according to the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the No. 1 shallow water well heat exchange component of the present invention.

[0027] Figure 3 It is a schematic diagram of the partial structure of the No. 1 shallow water well heat exchanger of the present invention.

[0028] Figure 4 It is a cross-sectional schematic diagram of the shallow water well heat exchange component of the present invention.

[0029] Figure 5 It is a schematic diagram of the partial structure of the shallow water well heat exchanger of the present invention.

[0030] Figure 6 It is a schematic diagram of the well wall tapered structure of the present invention.

[0031] Figure 7 This is a surface structure diagram of the conical structure of the present invention.

[0032] Description of reference numerals:

[0033] 1. Household split air conditioner; 2. Water storage tank; 3. Coil; 4. Thermometer; 5. Indoor terminal heat exchanger; 6. Water pump; 7. Shallow water well heat exchanger; 8. Conical structure; 9. Cone; 10. Water storage tank return pipe; 11. Heat exchange well return pipe; 12. Outlet pipe; 13. Inlet pipe; 14. Partition; 7-1. First water channel; 7-11. First water channel outlet; 7-11. Well wall of No. 1 shallow water well heat exchanger; 7-2. Second water channel; 7-21. Second water channel outlet; 7-3. Third water channel; 7-31. Third water channel outlet; 7-4. Fourth water channel; 7-41. Fourth water channel outlet; 7-5. Fifth water channel; 7-51. The fifth water channel outlet, 7-6, the sixth water channel, 7-61, the sixth water channel outlet, 7-7, the seventh water channel, 7-71, the seventh water channel outlet, 7-8, the eighth water channel, 7-81, the eighth water channel outlet, 7-9, water channels of No. 1 and No. 2 shallow water well heat exchangers, 7-10, water channels of No. 2 and No. 3 shallow water well heat exchangers, 7-1b, No. 2 shallow water well heat exchanger, 7-12, the first water channel of No. 2 shallow water well heat exchanger, 7-121, the first water channel entrance of No. 2 shallow water well heat exchanger, 7-13, the eighth water channel of No. 2 shallow water well heat exchanger, 7-14, the first water channel of No. 3 shallow water well heat exchanger, 7-15, the eighth water channel of No. 3 shallow water well heat exchanger. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The inventors discovered that shallow water wells, as the source of water for people’s daily life in the past, are a kind of natural “cold storage” in themselves because the water temperature of the well water is constant and is connected to the groundwater. The well water always has a large area of ​​good contact with the well wall, and the heat exchange effect is better. Therefore, the shallow water well can be structurally modified to form a "well" structure and transformed into a heat exchange well, which can make full use of the energy in the shallow water well.

[0036] In view of this, the present invention makes full use of the renewable energy of shallow underground water. When the cooling capacity required for the refrigerated room is small, only a small amount of power such as a water pump is needed to directly cool the room without turning on the split air conditioner. When the cooling capacity required for the refrigerated room is large, the household split air conditioner can be turned on to compensate for the cooling capacity, and the normal cooling demand of the room can still be ensured. In either mode, the energy consumption of the air conditioner can be reduced to the maximum extent, and carbon emissions can be reduced.

[0037] like Figure 1 to Figure 7 As shown, the present invention provides an air conditioning system based on a shallow water heat exchange well, including a shallow water well heat exchanger 7, the shallow water well heat exchanger 7 is arranged in the shallow water well, and the outer part of the shallow water well heat exchanger 7 is in contact with the shallow water well wall, the inner part of the shallow water well heat exchanger 7 is in contact with water, the shallow water well heat exchanger is connected with the water storage tank 2 through the water inlet pipe 13 and the water pump, the water storage tank 2 is connected with the indoor terminal heat exchanger 5 through the water outlet pipe 12, the indoor terminal heat exchanger 5 is connected with the water storage tank 2 through the water storage tank return pipe 10, the indoor terminal heat exchanger 5 is also connected with the shallow water well heat exchanger through the heat exchange well return pipe 11, the water storage tank return pipe 10 is provided with a first valve, the heat exchange well return pipe 11 is provided with a second valve, the shallow water well heat exchanger is used to circulate and refrigerate the output water after the indoor terminal heat exchanger 5 exchanges heat with the room air, and the refrigerated water is sent to the water storage tank 2 for storage again;

[0038] When the return water temperature in the water storage tank return pipe 10 is lower than the temperature of the well water, the first valve is opened and the second valve is closed; when the return water temperature in the water storage tank return pipe 10 is higher than the temperature of the well water, the first valve is closed and the second valve is opened;

[0039] The water storage tank 2 is provided with a coil 3 and a temperature measuring element 4. The coil 3 is connected to the outdoor hanging machine of the household split air conditioner 1, and is used to further cool the water stored in the water storage tank 2 by starting the outdoor hanging machine.

[0040] like Figure 1 As shown, the cold water cooled by the shallow water well heat exchanger 7 enters the water storage tank 2 through the water inlet pipe 13, and the thermometer 4 can monitor the water temperature in the water storage tank 2 at all times.

[0041] When the cooling load of the room is small, there is no need to turn on the household split air conditioner 1. Driven by the water pump 6, the water is directly sent to the indoor terminal heat exchanger 5 through the outlet pipe 12 to cool the room. At this time, the first valve is closed and the second valve is opened. The return water enters the shallow water well heat exchanger 7 through the heat exchange well return pipe 11 and is cooled again.

[0042] When the cooling load of the room is large, and the cooled cold water directly entering the indoor terminal heat exchanger 5 for cooling still cannot meet the cooling needs of the room, the household split air conditioner 1 is turned on, and the water in the water storage tank 2 is further cooled through the coil 3. When the set low temperature is reached, the household split air conditioner 1 is turned off to ensure that the cooling needs of the indoor room are met. At this time, if the return water temperature in the heat exchange well return pipe 11 is higher than the well water temperature, the first valve is closed, the second valve is opened, and the return water in the heat exchange well return pipe 11 is sent to the shallow water well heat exchanger 7. If the return water temperature in the heat exchange well return pipe 11 is lower than the well water temperature of the shallow water well heat exchanger 7, the second valve is closed, the first valve is opened, and the return water in the heat exchange well return pipe 11 is sent to the water storage tank 2 through the water storage tank return pipe 10.

[0043] In this process, temperature probes need to be arranged in the water tank return pipe 10 and the shallow water well heat exchanger 7 respectively, so as to detect the return water temperature in the water tank return pipe 10 and the temperature of the well water in the shallow water well heat exchanger 7 respectively. The temperature probes, the first valve and the second valve arranged in the water tank return pipe 10 and the shallow water well heat exchanger 7 are all connected to the controller. The controller selectively opens the first valve and the second valve based on the comparison of the temperature measurement result of the well water in the shallow water well heat exchanger 7 and the temperature measurement result of the water in the water tank return pipe 10.

[0044] Specifically, Figure 2-3 As shown, the shallow water well heat exchanger 7 includes a circular hollow shell, which has the largest heat exchange surface. The circular hollow shell is divided into multiple water channels vertically by partitions, wherein the first water channel is connected to the indoor terminal heat exchanger 5 through the heat exchange well return pipe, and every two adjacent water channels are provided with water holes, and the last water channel adjacent to the first water channel is provided with a water channel outlet, and the water channel outlet is connected to the water storage tank 2 through a water inlet pipe. The purpose of this is to increase the flow distance of water, so that there is sufficient indirect contact time between the flowing water and the soil and well water, so that the convective heat exchange is more sufficient.

[0045] Specifically, Figure 2-3 As shown, the multiple water holes opened on the multiple water channels are connected in sequence and arranged in a serpentine shape. The serpentine flow can further increase the flow distance of water, so that there is sufficient indirect contact time between the flowing water and the soil and well water, making the convective heat exchange more sufficient.

[0046] Specifically, Figure 2-3 As shown, the outer wall of the annular hollow shell is in contact with the well wall of the shallow water well heat exchanger 7, and the inner wall of the annular hollow shell is in contact with the well water. The purpose of this is that the outer wall of the annular hollow shell is in close contact with the soil to prevent the shallow water well heat exchanger 7 from collapsing, and the inner wall of the annular hollow shell is in contact with the well water, so that the heat exchange area is large.

[0047] Specifically, Figure 4-5 As shown, the shallow water well heat exchanger 7 is a plurality of concentrically arranged annular hollow shells, and the plurality of annular hollow shells are interconnected. The annular hollow shell farthest from the center of the circle is connected to the water outlet of the indoor terminal heat exchanger 5 through the heat exchange well return pipe 11, and the annular hollow shell closest to the center of the circle is connected to the water storage tank 2 through the water inlet pipe 13.

[0048] Specifically, Figure 4-5 As shown, in order to further increase the contact area between the shallow water well heat exchanger 7 and the well water, a plurality of water channels are used to create a very long water flow path, so that the water in the water channel can fully exchange heat with the soil and the well water, greatly enhancing the heat exchange effect. Multiple annular hollow shells are divided into multiple water channels vertically by partitions 14, wherein the first water channel of the annular hollow shell farthest from the center of the circle is connected to the indoor terminal heat exchanger 5 through the heat exchange well return pipe 11, and every two adjacent water channels are provided with water holes, and the last water channel of the annular hollow shell farthest from the center of the circle is connected to the first water channel of another adjacent annular hollow shell through the water channel outlet, and every two adjacent water channels in the annular hollow shell are provided with water holes, and the last water channel in the annular hollow shell is connected to the first water channel of another adjacent annular hollow shell through the water channel outlet, and multiple annular hollow shells are connected according to this connection method until the water channel outlet of the last water channel of the annular hollow shell closest to the center of the circle is connected to the water storage tank 2 through the water inlet pipe 13.

[0049] Specifically, Figure 4-5 As shown, the multiple water holes opened on the multiple water channels of each of the circular hollow shells are connected in sequence and arranged in a serpentine shape. The serpentine flow can further increase the flow distance of water, so that the flowing water has sufficient indirect contact time with the soil and well water, making the convective heat exchange more sufficient.

[0050] Specifically, Figure 6 As shown, a plurality of hollow conical structures 8 are provided on the inner wall of each water channel, the top of the conical structure 8 is sealed, the bottom of the conical structure 8 is open, and the top of the conical structure 8 is fixed on the inner wall of each water channel along the radius direction of the circular hollow shell. Due to the setting of the conical structure, when the flowing water passes through the water channel, the water flow is more likely to show turbulence and disturbance, and small eddies are prone to appear, which can destroy part of the boundary layer of the fluid, and further enhance the heat exchange between the flowing water and the soil or well water.

[0051] Specifically, as Figure 7 As shown, a plurality of cones 9 are evenly distributed on the peripheral wall of the cone structure 8. Since a plurality of cones 9 are arranged on each cone structure, part of the boundary layer of the fluid is quickly destroyed, further enhancing the heat exchange between the flowing water and the soil or well water.

[0052] Specifically, the shallow water well heat exchanger 7 can also be connected to the outdoor hanging machine through the heat exchange well outlet pipe, so as to exchange heat with the evaporator in the outdoor hanging machine, so that the heat after heat exchange is sent to the room through the indoor hanging machine. The heat exchange well outlet pipe is provided with a third valve. When heating in winter, the water coming out of the heat exchange well can also be used for heating using the shallow water well heat exchanger 7. At this time, the end of the heat exchange well outlet pipe is placed on the top of the evaporator, and the water can flow directly into the evaporator through the pipeline, and finally fall into the water tank with gravity and then flow back into the heat exchange well. In this process, the water exchanges heat with the evaporator, and the evaporator transports the heat to the room by absorbing the heat from the water, so as to achieve the purpose of heating; and after the water exchanges heat with the evaporator, the water temperature decreases, and it returns to the heat exchange well for heat exchange, reused, and circulated in sequence.

[0053] In this way, the shallow water well heat exchanger 7 can achieve a dynamic balance between heat input and output in both winter and summer seasons, which is beneficial to the long-term use of the shallow water well heat exchanger 7. Specific embodiments

[0055] The shallow water well heat exchanger 7 adopts a structure formed by three or more layers of circular hollow shells nested from the outside to the inside. Here, a structure formed by three layers of circular hollow shells nested is provided.

[0056] like Figure 1 As shown, the cooled cold water enters the water storage tank 2 through the water inlet pipe, and the thermometer 4 can monitor the water temperature in the water storage tank at all times. When the cooling load of the room is small, there is no need to turn on the household split air conditioner 1. Under the drive of the water pump 6, the water is directly sent to the indoor terminal heat exchanger 5 through the outlet pipe to cool the room. At this time, the first valve is closed, the second valve is opened, and the return water enters the shallow water well heat exchanger 7 through the heat exchange well return pipe 11 to be cooled again; when the cooling load of the room is large, and the cooled cold water directly enters the indoor terminal heat exchanger 5 for cooling and still cannot meet the cooling needs of the room, the household split air conditioner 1 is turned on, and the water in the water storage tank 2 is further cooled by the coil 3. When the set low temperature is reached, the household split air conditioner 1 is turned off to ensure that the cooling needs of the indoor room are met. At this time, if the return water temperature is higher than the well water temperature, the first valve is closed, the second valve is opened, and the return water is sent to the shallow water well heat exchanger 7. If the return water temperature is lower than the well water temperature, the second valve is closed, the first valve is opened, and the return water is sent to the water storage tank 2 through the water storage tank return pipe 10.

[0057] like Figure 2-3As shown, the return water enters the first water channel 7-1 through the water inlet of the No. 1 heat exchange well, enters the second water channel 7-2 through the first water channel outlet 7-11 at the bottom, flows out from the second water channel outlet 7-21 at the top of the second water channel 7-2, enters the third water channel 7-3, and also enters the fourth water channel 7-4 through the third water channel outlet 7-31, flows into the fifth water channel 7-5 at the fourth water channel outlet 7-41, and also flows into the sixth water channel 7-6 through the fifth water channel outlet 7-51 at the bottom of the fifth water channel 7-5, flows into the seventh water channel 7-7 through the sixth water channel outlet 7-61, and finally flows into the eighth water channel 7-8 through the seventh water channel outlet 7-71. Each water channel is separated by a water channel partition 14, and the surrounding is closed except for the inlet and outlet of the water channel. In addition, the outer side of the No. 1 shallow water well heat exchanger is close to the soil to prevent the shallow water well heat exchanger from collapsing, and the inner wall 7-111 of the No. 1 shallow water well heat exchanger is in contact with the well water, which makes the heat exchange area large, and the flow of water in each water channel is a serpentine flow, which increases the flow distance, so that there is sufficient indirect contact time between the water and the soil and the well water, making the convective heat exchange more sufficient. After the return water exchanges heat in the No. 1 shallow water well heat exchanger, it enters the next heat exchange well through the eighth water channel outlet 7-81 to continue heat exchange.

[0058] like Figure 4 and Figure 5 As shown, an eighth water channel outlet 7-81 is provided on the well wall 7-111 of the No. 1 shallow water well heat exchanger at the top of the eighth water channel 7-8. The flowing water flows out from the eighth water channel outlet 7-81, enters the water channels 7-9 of the No. 1 and No. 2 shallow water well heat exchangers, passes through the first water channel inlet 7-121 of the No. 2 shallow water well heat exchanger, flows into the first water channel 7-12 of the No. 2 heat exchanger well, and officially enters the No. 2 shallow water well heat exchanger. Similar to the water flow pattern and heat exchange conditions in the No. 1 shallow water well heat exchanger, the flowing water finally flows out from the eighth water channel 7-13 of the No. 2 shallow water well heat exchanger, passes through the water channels 7-10 of the No. 2 and No. 3 shallow water well heat exchangers, enters the first water channel 7-14 of the No. 3 shallow water well heat exchanger, and finally flows out from the eighth water channel 7-15 of the No. 3 shallow water well heat exchanger, and so on, so that the flowing water in the heat exchange well finally comes out from the innermost shallow water well heat exchanger, and then enters the water storage tank 2 through the water inlet pipe 13.

[0059] like Figure 6 and Figure 7As shown, a large number of conical structures 8 are arranged on the well wall of the shallow water well heat exchanger 7. The conical structure 8 is hollow inside, and the bottom is open to communicate with the well water, and the other end is closed. The surface is covered with cones 9. The conical structure 8 and the cones 9 significantly increase the area of ​​the water channel, which is very beneficial to heat exchange. In addition, due to the conical structure 8 and the cones 9, when the water flows through the water channel, the water flow is more likely to show turbulence and disturbance, and small eddies are likely to appear, which can destroy part of the boundary layer of the fluid, further enhancing the heat exchange between the water and the soil or well water.

[0060] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An air conditioning system based on shallow water heat exchange wells, It is characterized in that include: A shallow water well heat exchanger (7) is arranged in the shallow water well, and the exterior of the shallow water well heat exchanger (7) is in contact with the shallow water well wall, and the interior of the shallow water well heat exchanger (7) is in contact with water; A water storage tank (2) is used to store circulating water after refrigeration. The water storage tank (2) is connected to a shallow water well heat exchanger (7) via a water inlet pipe (13). A coil (3) and a temperature measuring element (4) are provided inside the water storage tank (2). The coil (3) is connected to an outdoor hanging unit of a household split air conditioner (1) and is used to further cool the water stored in the water storage tank (2) by starting the outdoor hanging unit. The indoor terminal heat exchanger (5) is connected to the water storage tank (2) through a water outlet pipe (12) and a water pump (6). The indoor terminal heat exchanger (5) is connected to the water storage tank (2) through a water storage tank return pipe (10). The water storage tank return pipe (10) is provided with a first valve. The indoor terminal heat exchanger (5) is also connected to a shallow water well heat exchange element (7) through a heat exchange well return pipe (11). The heat exchange well return pipe (11) is provided with a second valve. The output water after heat exchange between the indoor terminal heat exchanger (5) and the room air is circulated and cooled through the shallow water well heat exchange element (7); When the return water temperature in the water storage tank return pipe (10) is lower than the well water temperature, the first valve is opened and the second valve is closed; when the return water temperature in the water storage tank return pipe (10) is higher than the well water temperature, the first valve is closed and the second valve is opened.

2. An air conditioning system based on a shallow water heat exchange well according to claim 1, It is characterized in that The shallow water well heat exchanger (7) comprises a circular hollow shell, which is divided into a plurality of water channels in the vertical direction by a partition, wherein the first water channel is connected to the indoor terminal heat exchanger (5) through a heat exchange well return pipe, and water holes are provided on every two adjacent water channels. The water channel of the last shallow water well heat exchanger (7) adjacent to the first water channel is provided with a water channel outlet, and the water channel outlet is connected to the water storage tank (2) through a water inlet pipe (13).

3. An air conditioning system based on a shallow water heat exchange well according to claim 2, It is characterized in that The multiple water holes opened on the multiple water channels are connected in sequence and arranged in a serpentine shape.

4. An air conditioning system based on a shallow water heat exchange well according to claim 1, It is characterized in that The outer side wall of the annular hollow shell is in contact with the well wall of the shallow water well heat exchange component (7), and the inner side wall of the annular hollow shell is in contact with the well water.

5. An air conditioning system based on a shallow water heat exchange well according to claim 1, It is characterized in that The shallow water well heat exchange element (7) is a plurality of concentrically arranged annular hollow shells, the plurality of annular hollow shells are interconnected, the annular hollow shell farthest from the center of the circle is connected to the water outlet of the indoor terminal heat exchanger (5) via the heat exchange well return pipe (11), and the annular hollow shell closest to the center of the circle is connected to the water storage tank (2) via the water inlet pipe (13).

6. An air conditioning system based on a shallow water heat exchange well according to claim 5, It is characterized in that The plurality of annular hollow shells are vertically divided into a plurality of water channels by partitions (14), wherein the first water channel of the annular hollow shell farthest from the center of the circle is connected to the indoor terminal heat exchanger (5) through a heat exchange well return pipe (11), and water holes are provided on every two adjacent water channels. The last water channel of the annular hollow shell farthest from the center of the circle is connected to the first water channel of another adjacent annular hollow shell through a water channel outlet, and water holes are provided on every two adjacent water channels in the annular hollow shell. The last water channel in the annular hollow shell is connected to the first water channel of another adjacent annular hollow shell through a water channel outlet. The plurality of annular hollow shells are connected in this connection manner until the water channel outlet of the last water channel of the annular hollow shell closest to the center of the circle is connected to the water storage tank (2) through a water inlet pipe (13).

7. An air conditioning system based on a shallow water heat exchange well according to claim 6, It is characterized in that The multiple water holes opened on the multiple water channels of each of the annular hollow shells are connected in sequence and arranged in a serpentine shape.

8. An air conditioning system based on a shallow water heat exchange well according to claim 7, It is characterized in that A plurality of hollow conical structures (8) are provided on the inner wall of each water channel, wherein the top of the conical structure (8) is sealed and the bottom of the conical structure (8) is open, and the top of the conical structure (8) is fixed on the inner wall of each water channel along the radius direction of the circular hollow shell.

9. An air conditioning system based on a shallow water heat exchange well according to claim 8, It is characterized in that A plurality of cones (9) are evenly distributed on the peripheral wall of the cone structure (8).

10. An air conditioning system based on a shallow water heat exchange well according to claim 1, It is characterized in that The shallow water well heat exchange component (7) can also be connected to the outdoor hanging machine through the heat exchange well outlet pipe, so as to exchange heat with the evaporator in the outdoor hanging machine, so that the heat after heat exchange is sent into the room through the indoor hanging machine. A third valve is provided on the heat exchange well outlet pipe.

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