Medium-temperature water-wind disk enhanced heat exchange device, indoor unit and air conditioning system

Abstract

The present invention discloses a medium-temperature water-wind disk enhanced heat exchange device, an indoor unit and an air conditioning system, which relates to the field of air conditioning and solves the problem in the prior art that the water inlet temperature of the indoor unit increases, resulting in a decrease in the heat exchange capacity and dehumidification capacity of the indoor unit. The surface cooler of the device is located at the air outlet of the fan system, the automatic water distribution device is located between the air outlet of the fan system and the surface cooler and is located above the air outlet, the condensed water collection device is located below the surface cooler and the automatic water distribution device, the condensed water lifting device is used to lift the condensed water collected in the condensed water collection device to the automatic water distribution device, and the condensed water is dispersed by the automatic water distribution device and then flows downward into the condensed water collection device, when the condensed water flows downward, it is sheared and blown away by the air outlet of the fan system to form distributed water mist, and the surface cooler is used to exchange heat with the water mist and reduce the temperature of the water mist to below the dew point temperature. The device can improve the dehumidification capacity and heat exchange capacity of the indoor unit and meet the user's comfort requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a medium-temperature water-fan disc enhanced heat exchange device, an indoor unit including the enhanced heat exchange device, and an air conditioning system including the indoor unit. Background Art

[0002] Energy conservation and emission reduction of air-conditioning systems is an important direction of current air-conditioning research and development. Only when both the indoor and outdoor units of the air-conditioning system are energy-efficient can the air-conditioning system as a whole achieve energy conservation and emission reduction.

[0003] In the prior art, the outlet water temperature of the outdoor unit of the air conditioning system is 5°C. Increasing the outlet water temperature of the outdoor unit, for example, to about 8°C, can achieve energy conservation and emission reduction of the outdoor unit; however, the increase in the outlet water temperature of the outdoor unit will lead to an increase in the inlet water temperature of the indoor unit. Studies have shown that for every 1°C increase in the inlet water temperature of the conventional fan disc, the performance of the indoor unit of the air conditioner will decrease by about 12% and the dehumidification capacity will decrease by 30%; for every 1°C increase in the inlet and outlet water temperature difference, the performance of the indoor unit of the air conditioner will decrease by about 12.5% ​​and the dehumidification capacity will decrease by 31%.

[0004] The water inlet temperature of the indoor unit increases. To meet the load required by the engineering design, the water supply needs to be increased, which increases the energy consumption of the circulating water pump in the freezer. In addition, the heat transfer coefficient of the heat exchanger is significantly reduced when the water inlet temperature of the indoor unit increases. It is difficult to meet the user's comfort requirements by simply increasing the air volume. The prior art discloses a large temperature difference fan coil. For the large temperature difference fan coil, two sets of surface coolers respectively exchange heat with the air in the space where they are located, and the chilled water is used in a cascade, thereby expanding the temperature difference between the chilled water inlet and outlet of the fan coil, and increasing the conventional design of 5°C cold water temperature difference to 8°C-16°C, which can greatly reduce the energy consumption of the chilled water pump. Although this solution can reduce the energy consumption of the chilled water pump, it cannot optimize its heat transfer coefficient and dehumidification capacity.

[0005] Therefore, there is an urgent need to provide an enhanced heat exchange device that can improve the heat exchange capacity and dehumidification capacity of the indoor unit. Summary of the invention

[0006] One of the purposes of the present invention is to provide a medium-temperature water-wind disk enhanced heat exchange device, which solves the technical problem in the prior art that the water inlet temperature of the indoor unit increases, resulting in a decrease in the heat exchange capacity and dehumidification capacity of the indoor unit. The many technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The medium-temperature water-wind disk enhanced heat exchange device of the present invention includes a surface cooler, a condensate collecting device, a condensate lifting device and an automatic water diversion device, wherein the surface cooler is located at the air outlet of the fan system, the automatic water diversion device is located between the air outlet of the fan system and the surface cooler, and the automatic water diversion device is located above the air outlet of the fan system, the condensate collecting device is located below the surface cooler and the automatic water diversion device, the condensate lifting device is used to lift the condensate collected in the condensate collecting device to the automatic water diversion device, and make the condensate dispersed by the automatic water diversion device flow downward into the condensate collecting device, when the condensate flows downward, it is sheared and blown away by the air outlet of the fan system to form distributed water mist, the surface cooler is used to exchange heat with the water mist and reduce the temperature of the water mist to below the dew point temperature.

[0009] According to a preferred embodiment, the surface cooler includes at least two rows of heat exchangers, and the diameter of the heat exchange tubes in the heat exchangers gradually decreases from the air outlet close to the fan system to the air outlet far away from the fan system, and the water mist temperature is reduced to below the dew point temperature at least before the last heat exchanger.

[0010] According to a preferred embodiment, the surface cooler includes a first heat exchanger, a second heat exchanger and a third heat exchanger, the first heat exchanger is arranged near the air outlet of the fan system, the second heat exchanger and the third heat exchanger are arranged in sequence on the side of the first heat exchanger away from the air outlet, the diameters of the heat exchange tubes in the first heat exchanger, the second heat exchanger and the third heat exchanger are gradually reduced, and the outlet water temperature of the second heat exchanger is lower than the dew point temperature of the circulating air flow.

[0011] According to a preferred embodiment, the diameter of the heat exchange tube in the first heat exchanger is 9-10 mm, the diameter of the heat exchange tube in the second heat exchanger is 7.5-8.5 mm, and the diameter of the heat exchange tube in the third heat exchanger is 6.5-7.5 mm.

[0012] According to a preferred embodiment, the automatic water distribution device includes a drain pipe and a water distribution plate, wherein one end of the drain pipe is connected to the condensed water lifting device, the other end of the drain pipe is located on the water distribution plate, and the portion of the drain pipe located on the water distribution plate is provided with a drain hole, and the drain hole is used to distribute the condensed water in the drain pipe on the water distribution plate.

[0013] According to a preferred embodiment, the water distribution plate is provided with leakage holes, and the condensed water on the water distribution plate is dispersed through the leakage holes and then flows downward into the condensed water collecting device.

[0014] According to a preferred embodiment, a convex structure is arranged above the leakage hole, the edge of the convex structure is connected to part of the edge of the leakage hole, and the convex structure forms an arch structure with an opening on one side facing the drainage hole and a gap between the leakage hole in the vertical direction.

[0015] According to a preferred embodiment, the diameter of the water leakage hole is not less than 5 mm.

[0016] According to a preferred embodiment, the water diversion plate is obliquely arranged above the air outlet of the fan system, and the angle between the water diversion plate and the air outlet surface of the fan system is 75-88°.

[0017] According to a preferred embodiment, the bottom surface of the condensate collecting device is a sloped structure, the condensate collecting device is used to collect condensate generated by heat exchange between the surface cooler and the return air, and the condensate lifting device is arranged at the deepest water collection depth in the condensate collecting device.

[0018] The medium-temperature water-wind disk enhanced heat exchange device provided by the present invention has at least the following beneficial technical effects:

[0019] The medium-temperature water-wind disk enhanced heat exchange device of the present invention lifts the condensed water collected in the condensed water collection device to the automatic water distribution device through the condensed water lifting device. Under the action of gravity, the condensed water flows from top to bottom into the condensed water collection device. During the downward flow of the water flow, the air flow blown out from the air outlet of the fan system flows forward and interacts with the downward flowing water flow. The outlet air flow shears and blows away the condensed water flow, and the condensed water flow forms a distributed water mist, which can increase the moisture content of the air; on the other hand, when the high-temperature and high-humidity distributed water mist passes through the surface cooler, the water mist and the surface cooler can quickly drop to below the dew point temperature through heat exchange, and a large amount of condensed water is formed on the fins of the surface cooler, which greatly improves the latent heat capacity of the surface cooler, thereby greatly enhancing the refrigeration capacity of the heat exchange device. That is, the medium-temperature water-wind disk enhanced heat exchange device of the present invention solves the technical problem in the prior art that the water inlet temperature of the indoor unit increases, resulting in a decrease in the heat exchange capacity and dehumidification capacity of the indoor unit.

[0020] Another object of the present invention is to provide an indoor unit.

[0021] The indoor unit of the present invention comprises the medium-temperature water-wind disk enhanced heat exchange device described in any technical solution of the present invention. The indoor unit of the present invention comprises the medium-temperature water-wind disk enhanced heat exchange device of any technical solution of the present invention. Through the action of the medium-temperature water-wind disk enhanced heat exchange device, the dehumidification capacity and heat exchange capacity of the indoor unit can be improved to meet the user's comfort requirements.

[0022] Another object of the present invention is to provide an air conditioning system.

[0023] The air conditioning system of the present invention comprises an indoor unit and an outdoor unit, wherein the indoor unit is the indoor unit described in any one of the technical solutions of the present invention. The air conditioning system of the present invention has the function of the indoor unit of any one of the technical solutions of the present invention, and by using the indoor unit, when the water inlet temperature of the indoor unit increases, the indoor unit can still maintain excellent dehumidification capacity and heat exchange capacity, thereby achieving the purpose of energy saving and emission reduction of the air conditioning system by increasing the water outlet temperature of the outdoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of a preferred embodiment of the medium-temperature water fan disk enhanced heat exchange device of the present invention;

[0026] Figure 2 It is a schematic diagram of the flow direction of condensed water and outlet air flow of the present invention;

[0027] Figure 3 It is a schematic diagram of a preferred embodiment of the surface cooler of the present invention;

[0028] Figure 4 This is a control flow chart of chilled water of the surface cooler of the present invention;

[0029] Figure 5 This is a control flow chart of the chilled water temperature of the surface cooler of the present invention;

[0030] Figure 6 It is a schematic diagram of a preferred embodiment of the automatic water distribution device of the present invention;

[0031] Figure 7 yes Figure 6 A magnified view of part A;

[0032] Figure 8 Schematic diagram of the distribution of air outlets of the fan system of the present invention;

[0033] Fig. 9 It is a partial schematic diagram of the warm water fan disk enhanced heat exchange device of the present invention;

[0034] Fig.10 It is a schematic diagram of the arrangement of the preferred embodiment of the water distribution plate of the present invention;

[0035] Fig.11 It is a schematic diagram of the flow direction of condensed water on the surface cooler and the condensed water collecting device of the present invention;

[0036] Fig.12 It is a schematic diagram of the surface tension area of ​​water flow when no convex hull structure is provided on the water leakage hole of the present invention;

[0037] Fig.13 It is a schematic diagram of the surface tension area of ​​water flow when a convex hull structure is provided on the water leakage hole of the present invention.

[0038] In the figure: 10, surface cooler; 101, first heat exchanger; 102, second heat exchanger; 103, third heat exchanger; 20, condensate collecting device; 30, condensate lifting device; 40, automatic water distribution device; 401, drain pipe; 4011, drain hole; 402, water distribution plate; 4021, leakage hole; 4022, convex hull structure; 50, fan system; 60, temperature and humidity sensor. DETAILED DESCRIPTION

[0039] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0040] The following is attached to the instruction manual Figures 1 to 13 And Examples 1 to 3 describe in detail the medium-temperature water-fan disk enhanced heat exchange device, indoor unit and air conditioning system of the present invention.

[0041] Example 1

[0042] This embodiment describes in detail the medium-temperature water-air disk enhanced heat exchange device of the present invention.

[0043] The medium-temperature water fan disk enhanced heat exchange device of this embodiment includes a surface cooler 10, a condensate collecting device 20, a condensate lifting device 30 and an automatic water separation device 40. Figure 1 As shown. Preferably, the cooler 10 is located at the air outlet of the fan system 50, the automatic water separation device 40 is located between the air outlet of the fan system 50 and the cooler 10, and the automatic water separation device 40 is located above the air outlet of the fan system 50, the condensate collecting device 20 is located below the cooler 10 and the automatic water separation device 40, the condensate lifting device 30 is used to lift the condensate collected in the condensate collecting device 20 to the automatic water separation device 40, and make the condensate dispersed by the automatic water separation device 40 and then flow downward into the condensate collecting device 20, when the condensate flows downward, it is sheared and blown away by the air outlet of the fan system 50 to form distributed water mist, the cooler 10 is used to exchange heat with the water mist and reduce the temperature of the water mist to below the dew point temperature, as shown in FIG. Figure 1 and Figure 2The surface cooler 10 is located in front of the air outlet of the fan system 50, as shown in FIG. Figure 1 The temperature of the medium-temperature water in this embodiment is, for example, 9 to 12°C.

[0044] The medium-temperature water-wind disk enhanced heat exchange device of this embodiment, through the condensed water lifting device 30, lifts the condensed water collected in the condensed water collection device 20 to the automatic water distribution device 40. Under the action of gravity, the condensed water flows from top to bottom into the condensed water collection device 20. During the downward flow of the water flow, the air flow blown out from the air outlet of the fan system 50 flows forward and interacts with the downward flowing water flow. The outlet air flow shears and blows away the condensed water flow, and the condensed water flow forms a distributed water mist, which can increase the moisture content of the air. On the other hand, when the high-temperature and high-humidity distributed water mist passes through the surface cooler 10, the water mist and the surface cooler 10 can quickly reduce the dew point temperature, and a large amount of condensed water is formed on the fins of the surface cooler 10, which greatly improves the latent heat capacity of the surface cooler 10, thereby greatly enhancing the refrigeration capacity of the heat exchange device. That is, the medium-temperature water-wind disk enhanced heat exchange device of this embodiment solves the technical problem in the prior art that the water inlet temperature of the indoor unit increases, resulting in a decrease in the heat exchange capacity and dehumidification capacity of the indoor unit.

[0045] According to a preferred embodiment, the surface cooler 10 includes at least two rows of heat exchangers, and the diameter of the heat exchange tubes in the heat exchangers gradually decreases from the air outlet close to the fan system 50 to the air outlet far away from the fan system 50, and the water mist temperature is reduced to below the dew point temperature at least before the last heat exchanger. Preferably, the heat exchanger at the air outlet close to the fan system 50 can use a large-diameter heat exchanger, and the heat exchanger at the air outlet far away from the fan system 50 can use a normal-diameter heat exchanger, such as Figure 5 As shown. The surface cooler 10 of the preferred technical solution of this embodiment is composed of heat exchangers of different diameters. From the air outlet close to the fan system 50 to the air outlet far away from the fan system 50, the diameter of the heat exchange tube in the heat exchanger gradually decreases, and the water mist temperature is reduced to below the dew point temperature at least before the last heat exchanger, which can improve the latent heat exchange capacity between the airflow and the surface cooler 10, so that the water vapor in the return air can be exchanged with the last heat exchanger as much as possible; the water mist reduced to below the dew point temperature can also continue to exchange heat with at least the last heat exchanger, which can improve the sensible heat exchange capacity of the surface cooler 10 and ensure that the heat exchange device has sufficient cooling capacity in the case of medium-temperature water.

[0046] Preferably, the surface cooler 10 comprises a first heat exchanger 101, a second heat exchanger 102 and a third heat exchanger 103. Figure 3Preferably, the first heat exchanger 101 is arranged near the air outlet of the fan system 50, the second heat exchanger 102 and the third heat exchanger 103 are arranged in sequence on the side of the first heat exchanger 101 away from the air outlet of the fan system 50, the diameters of the heat exchange tubes in the first heat exchanger 101, the second heat exchanger 102 and the third heat exchanger 103 are gradually reduced, and the outlet water temperature of the second heat exchanger 102 is lower than the dew point temperature of the circulating air flow, as shown in FIG. Figure 3 to Figure 5 Specifically, the outlet water temperature of the first heat exchanger 101 is controlled to be T 1C , control the outlet water temperature of the second heat exchanger 102 to T 2C , T 2C The dew point temperature is much lower than the dew point temperature of the return air flow. Preferably, the dew point temperature can be calculated and confirmed by the data collected by the temperature and humidity sensor 60 arranged near the heat exchanger, such as Figure 5 As shown. The specific calculation method can be calculated using the method in the prior art, which will not be described in detail here. The side of the first heat exchanger 101 away from the air outlet of the fan system 50 mentioned in the preferred technical solution of this embodiment can also be said to be the leeward side of the first heat exchanger 101. More preferably, the diameter of the heat exchange tube in the first heat exchanger 101 is 9-10 mm, the diameter of the heat exchange tube in the second heat exchanger 102 is 7.5-8.5 mm, and the diameter of the heat exchange tube in the third heat exchanger 103 is 6.5-7.5 mm. For example, the diameter of the heat exchange tube in the first heat exchanger 101 is 9.52 mm, the diameter of the heat exchange tube in the second heat exchanger 102 is 8 mm, and the diameter of the heat exchange tube in the third heat exchanger 103 is 7 mm. Without limitation to this, the diameters of the heat exchange tubes in the first heat exchanger 101, the second heat exchanger 102, and the third heat exchanger 103 of the preferred technical solution of this embodiment may also be other sizes, generally satisfying that the heat exchange tubes in the first heat exchanger 101 and the second heat exchanger 102 are large-diameter heat exchange tubes, and the heat exchange tubes in the third heat exchanger 103 are ordinary-diameter heat exchange tubes. Without limitation to this, the preferred technical solution of this embodiment may also be provided with only two rows of heat exchangers, or may be provided with four rows or even more than four rows of heat exchangers.

[0047] According to a preferred embodiment, the automatic water distribution device 40 includes a drain pipe 401 and a water distribution plate 402. Figure 6 Preferably, one end of the drain pipe 401 is connected to the condensate lifting device 30, and the other end of the drain pipe 401 is located on the water distribution plate 402, and the portion of the drain pipe 401 located on the water distribution plate 402 is provided with a drain hole 4011, and the drain hole 4011 is used to distribute the condensate in the drain pipe 401 on the water distribution plate 402, as shown. Figure 6 Preferably, the water distribution plate 402 is provided with a water leakage hole 4021, and the condensed water on the water distribution plate 402 is dispersed through the water leakage hole 4021 and then flows downward into the condensed water collecting device 20, as shown in FIG. Figure 6 The water leakage hole 4021 is located above the air outlet of the fan system 50, as shown in FIG. Figure 8 The preferred technical solution of this embodiment can make the condensed water evenly distributed on the water distribution plate 42 through the drainage holes 4011 on the drainage pipe 401, and through the function of the leakage holes 4021 on the water distribution plate 402, the condensed water can be dispersed through the leakage holes 4021 and then flow downward.

[0048] According to a preferred embodiment, a convex hull structure 4022 is provided above the leakage hole 4021, and the edge of the convex hull structure 4022 is connected to a part of the edge of the leakage hole 4021, and the convex hull structure is formed into an arched structure with an opening on one side facing the drainage hole 4011 and a gap between the leakage hole 4021 in the vertical direction, such as Figure 7 As shown. Preferably, the water leakage hole 4021 is a circular structure. More preferably, the hole diameter of the water leakage hole 4021 is not less than 5 mm. The structure of the water leakage hole 4021 in the preferred technical solution of this embodiment can also be said to be a semicircular convex hull structure. When the condensed water flows through the water leakage hole 4021, due to the influence of gravity and surface tension, the water flow forms surface tension around the water leakage hole 4021, causing a blocking effect, affecting the downward flow of water, such as Fig.12 The preferred technical solution of this embodiment is to set a convex hull structure 4022 above the leaking hole 4021. The surface tension formed by the water flow around the leaking hole 4021 can be reduced through the effect of the convex hull structure 4022. Specifically, the water flow only forms surface tension around the leaking hole 4021 where the convex hull structure 4022 is not set, thereby reducing the blocking effect, improving the smoothness of the water flow, and ensuring that the water flow can flow downward evenly. Fig.13 shown.

[0049] According to a preferred embodiment, the water diversion plate 402 is disposed obliquely above the air outlet of the fan system 50. Fig.10 Preferably, the angle between the water diversion plate 402 and the air outlet surface of the fan system 50 is 75 to 88 degrees. Fig.10 α shown in . More preferably, the angle between the water diversion plate 402 and the air outlet surface of the fan system 50 can also be set to other angles based on the performance requirements of the unit. The smaller the angle between the water diversion plate 402 and the air outlet surface of the fan system 50, that is, the greater the inclination of the water diversion plate 402, the faster the condensed water flows downward; the larger the angle between the water diversion plate 402 and the air outlet surface of the fan system 50, that is, the smaller the inclination of the water diversion plate 402, the slower the condensed water flows downward. The preferred technical solution of this embodiment can control the flow rate of the condensed water by controlling the inclination of the water diversion plate 402, and can control the flow rate of the condensed water by controlling the speed of the water pump impeller of the condensed water lifting device 30, thereby controlling the air humidity and the heat exchange capacity of the surface cooler 10.

[0050] According to a preferred embodiment, the bottom surface of the condensate collecting device 20 is an inclined structure, and the condensate collecting device 20 is used to collect the condensate generated by the heat exchange between the surface cooler 10 and the return air, and the condensate lifting device 30 is arranged at the deepest water collection depth in the condensate collecting device 20, such as Fig. 9 shown. Fig.11 A schematic diagram of the condensate flow on the cooler 10 and the condensate collecting device 20 is shown. The condensate lifting device 30 is, for example, a water pump device. The bottom surface of the condensate collecting device 20 of the preferred technical solution of this embodiment is an inclined structure, which can make the condensate generated by the heat exchange between the cooler 10 and the return air flow to the lower part of the condensate collecting device 20, and the condensate lifting device 30 is set at the deepest water collection depth, so that the condensate lifting device 30 can lift the collected condensate to the water distribution plate 402 to achieve the recycling of the condensate.

[0051] Example 2

[0052] This embodiment describes the indoor unit of the present invention in detail.

[0053] The indoor unit of this embodiment includes the medium-temperature water-wind disk enhanced heat exchange device of any technical solution in Embodiment 1. The remaining structure of the indoor unit can be the same as that of the prior art, and will not be described in detail here.

[0054] The indoor unit of this embodiment has a medium-temperature water-fan disc enhanced heat exchange device of any technical solution in this embodiment. Through the action of the medium-temperature water-fan disc enhanced heat exchange device, the dehumidification capacity and heat exchange capacity of the indoor unit can be improved to meet the user's comfort requirements.

[0055] Example 3

[0056] This embodiment describes the air conditioning system of the present invention in detail.

[0057] The air conditioning system of this embodiment includes an indoor unit and an outdoor unit, wherein the indoor unit is the indoor unit of any technical solution in Embodiment 2. The outlet water temperature of the outdoor unit is 7-10°C, and the rest of the structure of the outdoor unit can be the same as the prior art, which will not be described in detail.

[0058] The air-conditioning system of this embodiment has the function of the indoor unit of any one of the technical solutions in this embodiment. By utilizing this indoor unit, when the water inlet temperature of the indoor unit increases, the indoor unit can still maintain excellent dehumidification capacity and heat exchange capacity, thereby achieving the purpose of energy saving and emission reduction of the air-conditioning system by increasing the water outlet temperature of the outdoor unit.

[0059] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0060] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0061] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A medium-temperature water-wind disk enhanced heat exchange device, characterized in that: It comprises a surface cooler (10), a condensed water collecting device (20), a condensed water lifting device (30) and an automatic water separation device (40), wherein: The surface cooler (10) is located at the air outlet of the fan system (50), the automatic water distribution device (40) is located between the air outlet of the fan system (50) and the surface cooler (10), and the automatic water distribution device (40) is located above the air outlet of the fan system (50), and the condensed water collection device (20) is located below the surface cooler (10) and the automatic water distribution device (40). The condensate lifting device (30) is used to lift the condensate collected in the condensate collecting device (20) to the automatic water separation device (40), and the condensate is dispersed by the automatic water separation device (40) and then flows downward into the condensate collecting device (20). When the condensate flows downward, it is sheared and blown away by the outlet air of the fan system (50) to form distributed water mist. The surface cooler (10) is used to exchange heat with the water mist and reduce the temperature of the water mist to below the dew point temperature. The automatic water distribution device (40) comprises a drain pipe (401) and a water distribution plate (402), wherein one end of the drain pipe (401) is connected to the condensed water lifting device (30), the other end of the drain pipe (401) is located on the water distribution plate (402), and a drain hole (4011) is provided on the portion of the drain pipe (401) located on the water distribution plate (402), and the drain hole (4011) is used to distribute the condensed water in the drain pipe (401) on the water distribution plate (402); The water distribution plate (402) is provided with a water leakage hole (4021), and the condensed water on the water distribution plate (402) is dispersed through the water leakage hole (4021) and then flows downward into the condensed water collecting device (20); A convex structure (4022) is provided above the water leakage hole (4021), the edge of the convex structure (4022) is connected to a part of the edge of the water leakage hole (4021), and the convex structure forms an arched structure with an opening on one side facing the drainage hole (4011) and a gap between the convex structure and the water leakage hole (4021) in the vertical direction.

2. The medium-temperature water-wind disk enhanced heat exchange device according to claim 1 is characterized in that: The surface cooler (10) comprises at least two rows of heat exchangers, and the diameter of the heat exchange tubes in the heat exchangers gradually decreases from the air outlet close to the fan system (50) to the air outlet far away from the fan system (50), and the water mist temperature is reduced to below the dew point temperature at least before the last heat exchanger.

3. The medium-temperature water-wind disk enhanced heat exchange device according to claim 2 is characterized in that: The surface cooler (10) comprises a first heat exchanger (101), a second heat exchanger (102) and a third heat exchanger (103); the first heat exchanger (101) is arranged near an air outlet of the fan system (50); the second heat exchanger (102) and the third heat exchanger (103) are arranged in sequence on a side of the first heat exchanger (101) away from the air outlet; the diameters of the heat exchange tubes in the first heat exchanger (101), the second heat exchanger (102) and the third heat exchanger (103) are gradually reduced, and the outlet water temperature of the second heat exchanger (102) is lower than the dew point temperature of the circulating air flow.

4. The medium-temperature water-wind disk enhanced heat exchange device according to claim 3 is characterized in that: The diameter of the heat exchange tube in the first heat exchanger (101) is 9 to 10 mm, the diameter of the heat exchange tube in the second heat exchanger (102) is 7.5 to 8.5 mm, and the diameter of the heat exchange tube in the third heat exchanger (103) is 6.5 to 7.5 mm.

5. The medium-temperature water-wind disk enhanced heat exchange device according to claim 1, characterized in that: The hole diameter of the water leakage hole (4021) is not less than 5 mm.

6. The medium-temperature water-wind disk enhanced heat exchange device according to claim 1, characterized in that: The water divider plate (402) is arranged obliquely above the air outlet of the fan system (50), and the angle between the water divider plate (402) and the air outlet surface of the fan system (50) is 75 to 88 degrees.

7. The medium-temperature water-wind disk enhanced heat exchange device according to claim 1, characterized in that: The bottom surface of the condensate collecting device (20) is an inclined structure, and the condensate collecting device (20) is used to collect condensate generated by the heat exchange between the surface cooler (10) and the return air, and the condensate lifting device (30) is arranged at the deepest water collection depth in the condensate collecting device (20).

8. An indoor unit, characterized in that: It comprises the medium-temperature water-wind disk enhanced heat exchange device according to any one of claims 1 to 7.

9. An air conditioning system, characterized in that: It comprises an indoor unit and an outdoor unit, wherein the indoor unit is the indoor unit described in claim 8.

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