Heat exchange assembly and air conditioning system

Abstract

The utility model provides a heat exchange assembly and an air conditioning system. The heat exchange assembly comprises a frame; the evaporation and condensation assembly is arranged in the frame; the evaporation and condensation assembly is arranged in the frame, the natural cooling surface air cooler is arranged in the frame, and the natural cooling surface air cooler is located above the evaporation and condensation assembly; the heat exchange assembly has a compression refrigeration mode, a natural refrigeration mode and a mixed refrigeration mode. According to the heat exchange assembly and the air conditioning system, the natural cooling surface air cooler and the evaporation condensation assembly are arranged, so that the heat exchange assembly can select the natural cooling surface air cooler and / or the evaporation condensation assembly for refrigeration according to the set conditions, the refrigeration efficiency of the heat exchange assembly is maximized, the energy consumption of the heat exchange assembly is effectively reduced, and the service life of the heat exchange assembly is prolonged. And the natural cooling surface air cooler and the evaporation condensation assembly are integrated in the frame, so that the space utilization rate is high, the occupied space of the heat exchange assembly is reduced, and the application range of the heat exchange assembly is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of air processing equipment, in particular to a heat exchange component and an air conditioning system. Background Art

[0002] The evaporative cooler is a new type of cooling equipment that organically combines the sprinkler type pipe cooler and the circulating cooling tower, integrating the advantages of both. The cooler adopts a countercurrent structure, mainly including a fan, a box, a water tray, a cooling heat exchange pipe group, a steel structure frame, a wind window, a circulating water pump, a float valve, etc. The cooling pipes are used in parallel, the heat exchange area is large, and the system resistance is small. The structure is compact and occupies a small area. Modular design, independent unit operation, can be arbitrarily increased or adjusted according to the system production capacity. Due to the above advantages, evaporative cooling units are increasingly favored in commercial occasions with small spaces. However, traditional evaporative cooling units can function well when the ambient temperature is high, but when the ambient temperature is low, the low ambient temperature cannot be used for the unit, and the refrigeration capacity of the evaporative cooling unit can only be guaranteed by increasing the operating frequency of the compressor of the evaporative cooling unit, resulting in the problem of increased energy consumption of the evaporative cooling unit. Utility Model Content

[0003] In order to solve the technical problem of increased energy consumption of evaporative cooling units when the ambient temperature is low in the prior art, a heat exchange component and an air conditioning system are provided which integrate an evaporative cooling component and a natural cooling component in a frame and perform different operating modes to reduce energy consumption.

[0004] A heat exchange component, comprising:

[0005] frame;

[0006] An evaporation-condensation component, wherein the evaporation-condensation component is disposed in the frame;

[0007] A natural cooling surface cooler, which is arranged in the frame and located above the evaporative condensation component;

[0008] The heat exchange component has a compression refrigeration mode, a natural refrigeration mode and a mixed refrigeration mode;

[0009] When the heat exchange component is in compression refrigeration mode, the evaporation condensation component works and the natural cooling surface cooler stops working;

[0010] When the heat exchange component is in the natural cooling mode, the natural cooling surface cooler works and the evaporative condensing component stops working;

[0011] When the heat exchange component is in the mixed cooling mode, both the natural cooling condenser and the evaporative condensing component are in operation.

[0012] The evaporative condensing component includes an evaporative condenser and a spray mechanism, the evaporative condenser is arranged below the natural cooling surface cooler, the spray mechanism is arranged between the evaporative condenser and the natural cooling surface cooler, and the spray direction of the spray mechanism is toward the evaporative condenser.

[0013] The heat exchange component also includes a fan. An air inlet is formed on the frame below the evaporative condensation component, an air outlet is formed on the top of the frame, and the fan is arranged at the air outlet.

[0014] The evaporative condensation component also includes a packing structure, which is arranged below the evaporative condenser. The frame located below the packing structure constitutes an air inlet cavity. An air inlet is arranged on the side wall of the frame, and the air inlet is connected to the air inlet cavity.

[0015] The evaporation and condensation assembly also includes a water receiving tray and a driving structure. The water receiving tray is located at the bottom of the frame, the water inlet of the driving structure is located inside the water receiving tray, and the water outlet of the driving structure is connected to the spray mechanism.

[0016] The heat exchange medium in the natural cooling surface cooler is ethylene glycol solution.

[0017] The heat exchange component also includes a temperature detection mechanism, which is disposed on the frame and can obtain the ambient temperature of the area where the heat exchange component is located and control the operation mode of the heat exchange component according to the ambient temperature.

[0018] An air conditioning system comprises the above-mentioned heat exchange component.

[0019] There are multiple heat exchange components, the frames in all the heat exchange components are arranged in parallel, the natural cooling surface coolers in all the heat exchange components are arranged in parallel, and all the evaporation condensation components are arranged in series.

[0020] The air-conditioning system also includes a natural cooling evaporator and a compression evaporator. The natural cooling surface cooler and the natural cooling evaporator constitute a natural cooling cycle, the evaporative condenser and the compression evaporator constitute a compression cooling cycle, the natural cooling evaporator is provided with a user water inlet, the compression evaporator is provided with a user water outlet, and a water connection pipe is provided between the natural cooling evaporator and the compression evaporator.

[0021] The heat exchange component and air-conditioning system provided by the utility model, by arranging a natural cooling surface cooler and an evaporative condensing component, enable the heat exchange component to select the natural cooling surface cooler and / or the evaporative condensing component for refrigeration according to the set conditions, thereby maximizing the refrigeration efficiency of the heat exchange component and effectively reducing the energy consumption of the heat exchange component. Moreover, since the natural cooling surface cooler and the evaporative condensing component are integrated in the frame, the space utilization rate is high, the occupied space of the heat exchange component is reduced, and the application range of the heat exchange component is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a heat exchange assembly provided in an embodiment of the utility model;

[0023] Figure 2 Another schematic diagram of the structure of the heat exchange assembly provided by the embodiment of the utility model;

[0024] Figure 3 Another schematic diagram of the structure of the heat exchange assembly provided by the embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the structure of an air conditioning system provided by an embodiment of the utility model;

[0026] In the figure:

[0027] 1. Frame; 2. Evaporative condensing assembly; 3. Natural cooling surface cooler; 21. Evaporative condenser; 22. Spray mechanism; 4. Fan; 11. Air inlet; 23. Packing structure; 5. Natural cooling evaporator; 6. Compression evaporator. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" 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 direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The evaporative cooler is a new type of cooling equipment that organically combines the sprinkler-type row tube cooler and the circulating cooling tower, integrating the advantages of both. The cooler adopts a countercurrent structure, which mainly includes a fan, a box, a water tray, a cooling heat exchange pipe group, a steel structure frame, a wind screen, a circulating water pump, a float valve, etc. The cooling pipes are used in parallel, with a large heat exchange area and a small system resistance. The structure is compact and occupies a small area. Modular design, independent unit operation, can be arbitrarily increased or adjusted according to the system production capacity. Due to the above advantages, evaporative cooling units are increasingly favored in commercial occasions with limited space. However, traditional evaporative cooling units can function well when the ambient temperature is high, but when the ambient temperature is low, the low ambient temperature cannot be used for the unit, and the refrigeration capacity of the evaporative cooling unit can only be guaranteed by increasing the operating frequency of the compressor of the evaporative cooling unit, resulting in the problem of increased energy consumption of the evaporative cooling unit. To this end, the present application provides a method such as Figures 1 to 4The heat exchange component shown includes: a frame 1; an evaporative condensing component 2, which is arranged in the frame 1; a natural cooling surface cooler 3, which is arranged in the frame 1 and is located above the evaporative condensing component 2; the heat exchange component has a compression refrigeration mode, a natural refrigeration mode and a mixed refrigeration mode; when the heat exchange component is in the compression refrigeration mode, the evaporative condensing component 2 works and the natural cooling surface cooler 3 stops working; when the heat exchange component is in the natural refrigeration mode, the natural cooling surface cooler 3 works and the evaporative condensing component 2 stops working; when the heat exchange component is in the mixed refrigeration mode, the natural cooling surface cooler 3 and the evaporative condensing component 2 both work. By setting up a natural cooling surface cooler 3 and an evaporative condensing component 2, the heat exchange component can select the natural cooling surface cooler 3 and / or the evaporative condensing component 2 for cooling according to the set conditions, thereby maximizing the cooling efficiency of the heat exchange component and effectively reducing the energy consumption of the heat exchange component. Moreover, since the natural cooling surface cooler 3 and the evaporative condensing component 2 are integrated in the frame 1, the space utilization rate is high, the occupied space of the heat exchange component is reduced, and the application range of the heat exchange component is improved.

[0034] As an embodiment, the evaporative condensation assembly 2 includes an evaporative condenser 21 and a spray mechanism 22, wherein the evaporative condenser 21 is arranged below the natural cooling cooler 3, and the spray mechanism 22 is arranged between the evaporative condenser 21 and the natural cooling cooler 3, and the spray direction of the spray mechanism 22 is toward the evaporative condenser 21. The spray mechanism 22 is used to distribute water to the evaporative condenser 21, so that the water can exchange heat with the heat exchange tubes in the evaporative condenser 21, and the water can evaporate on the surface of the evaporative condenser 21 to drive the heat of the refrigerant inside the evaporative condenser 21, thereby achieving the purpose of cooling the high-temperature and high-pressure refrigerant. Since the natural cooling cooler 3 is located above the spray mechanism 22, the problem of the unreliable operation of the cooler caused by the spray mechanism 22 spraying on the cooler can be avoided, and the height of the spray mechanism 22 can be reduced to reduce the pressure loss of the water system corresponding to the spray mechanism 22, further reducing the energy consumption of the water system and reducing the overall energy consumption of the heat exchange assembly.

[0035] The heat exchange component also includes a fan 4. An air inlet 11 is formed on the frame 1 below the evaporative condensation component 2. An air outlet is formed on the top of the frame 1. The fan 4 is arranged at the air outlet. The fan 4 is used to form a negative pressure at the top of the frame 1, forcing the gas outside the frame 1 to flow into the frame 1 from the air inlet 11, and pass through the evaporative condensation component 2 and the natural cooling cooler 3 in turn, so that the airflow can flow in the evaporative condensation component 2 in the reverse direction with the spray water generated by the spray mechanism 22, thereby improving the heat exchange efficiency of the evaporative condensation component 2. At the same time, the airflow can also flow through the natural cooling cooler 3, increasing the heat exchange efficiency between the gas and the refrigerant in the natural cooling cooler 3, so that the fan 4 can simultaneously meet the airflow requirements of the evaporative condensation component 2 and the natural cooling cooler 3, thereby improving the integration level of the heat exchange component and further improving the application scope of the heat exchange component.

[0036] The evaporative condensation component 2 further includes a packing structure 23, which is disposed below the evaporative condenser 21. The frame 1 below the packing structure 23 forms an air inlet cavity, and an air inlet 11 is disposed on the side wall of the frame 1. The air inlet 11 is connected to the air inlet cavity. The packing structure 23 is used to further increase the heat exchange efficiency of the evaporative condensation component 2, and further improve the heat exchange efficiency of the heat exchange component.

[0037] The evaporative condensation component 2 also includes a water receiving tray and a driving structure. The water receiving tray is located at the bottom of the frame 1. The water inlet of the driving structure is located inside the water receiving tray. The water outlet of the driving structure is connected to the spraying mechanism 22. The cooling water at the spraying point of the spraying mechanism 22 will flow through the evaporative condenser 21 and the packing structure 23 in turn and then drip into the water receiving tray. Then, after being filtered, it will be pumped to the spraying mechanism 22 by the driving structure for reuse, which reduces the energy consumption of the heat exchange component and improves the energy utilization rate. Among them, the driving structure includes a water pump and a connecting pipe. The water pump is arranged at the bottom of the frame and located in the water receiving tray. The connecting pipe is located on one side of the packing structure 23 and the evaporative condenser. The size of the connecting pipe and the occupation of the internal space of the frame by the connecting pipe are reduced as much as possible, so that the volume of the evaporative condenser 21 can be increased to improve the heat exchange efficiency of the heat exchange component.

[0038] The heat exchange medium in the natural cooling surface cooler 3 is ethylene glycol solution. Traditional refrigerants are highly toxic and corrosive, and there are potential safety risks during use; while ethylene glycol solution is a natural organic compound, which is a non-toxic, odorless, non-irritating compound with high safety, environmental friendliness and renewability. Compared with traditional refrigerants, ethylene glycol solution will not damage the atmosphere and will not produce a greenhouse effect on the earth, so it plays a positive role in reducing global warming and protecting the environment. In addition, the heat conduction capacity of traditional refrigerants is poor, and the refrigeration process requires a longer time and greater energy consumption, while ethylene glycol solution has a lower vaporization temperature and a higher heat absorption capacity. It can quickly absorb heat and achieve a refrigeration effect during the refrigeration process, so it can further improve the heat exchange efficiency of the heat exchange component.

[0039] The heat exchange component further includes a temperature detection mechanism, which is disposed on the frame 1 and can obtain the ambient temperature of the area where the heat exchange component is located and control the operation mode of the heat exchange component according to the ambient temperature.

[0040] For example, in summer, when the ambient temperature is within the range of 15°C to 45°C, the compression refrigeration mode is operated, and the compressor corresponding to the heat exchange component is turned on and outputs 100% capacity. In the evaporative condensation component 2, the cooling water is actively distributed outside the heat exchange tube of the evaporative condenser 21 to form a water film, thereby improving the heat exchange performance between the outer wall of the heat exchange tube and the water film. The water film evaporates on the surface of the heat exchange tube to take away the heat of the refrigerant, thereby achieving the effect of cooling the high-temperature and high-pressure refrigerant;

[0041] In winter, when the ambient temperature is between -30℃ and 2℃, the natural cooling mode is operated. Under the action of the natural cooling water pump, a certain concentration of ethylene glycol solution enters the natural cooling surface cooler 3 to release heat to the low-temperature air to cool it down. Then, the low-temperature ethylene glycol solution enters the natural cooling evaporator to absorb the heat in the chilled water and heat it up, thereby cooling the chilled water and ensuring the reliable refrigeration of the heat exchange component.

[0042] During the transition seasons of spring or autumn, when the ambient temperature is between 2°C and 15°C, the mixed cooling mode is operated. At this time, both the evaporative condensing component 2 and the natural cooling surface cooler 3 are working, but the compressor corresponding to the evaporative condensing component 2 does not need to run at full load. The low-temperature natural cold source is used to the maximum extent, effectively ensuring the cooling effect of the heat exchange component while reducing the energy consumption of the heat exchange component.

[0043] An air conditioning system comprises the above-mentioned heat exchange component.

[0044] There are multiple heat exchange components, and the frames 1 in all the heat exchange components are arranged in parallel, and the natural cooling coolers 3 in all the heat exchange components are arranged in parallel, and all the evaporative condensing components 2 are arranged in series. Due to the high integration of the heat exchange components with the natural cooling coolers 3 and the evaporative condensing components 2, different numbers of heat exchange components can be selected for matching according to the heat exchange requirements of the air-conditioning system, thereby realizing modular installation of the air-conditioning system, improving the installation efficiency of the air-conditioning system, and reducing the research and development cost of the air-conditioning system.

[0045] The air-conditioning system also includes a natural cooling evaporator 5 and a compression evaporator 6. The natural cooling evaporator 3 and the natural cooling evaporator 5 constitute a natural cooling cycle, the evaporative condenser and the compression evaporator 6 constitute a compression cooling cycle, the natural cooling evaporator 5 is provided with a user water inlet, the compression evaporator 6 is provided with a user water outlet, and a water connection pipe is provided between the natural cooling evaporator 5 and the compression evaporator 6. The chilled water can be heated by the natural cooling evaporator 5 and the compression evaporator 6 in sequence and then provided to the user through the user water outlet. When the heat exchange component operates in the compression refrigeration mode and the natural refrigeration mode, the chilled water can be reliably cooled, thereby ensuring the reliable operation of the air-conditioning system. When the heat exchange component operates in the mixed refrigeration mode, since the temperature of the chilled water is relatively high and the degree of cooling of the chilled water in the natural cooling cycle is relatively weak, the chilled water can first be initially cooled by the natural cooling evaporator 5 and then cooled for the second time by passing through the evaporative condenser 21. That is, the cold capacity in the natural cooling evaporator 5 can be fully utilized, and the compression cooling cycle can also be used to ensure that the chilled water reaches the temperature required by the user, thereby ensuring the reliable operation of the air-conditioning system under the premise of reducing energy consumption.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat exchange component, characterized in that: include: Framework (1); An evaporation-condensation component (2), wherein the evaporation-condensation component (2) is arranged in the frame (1); A natural cooling surface cooler (3), wherein the natural cooling surface cooler (3) is arranged in the frame (1), and the natural cooling surface cooler (3) is located above the evaporative condensation component (2); The heat exchange component has a compression refrigeration mode, a natural refrigeration mode and a mixed refrigeration mode; When the heat exchange component is in the compression refrigeration mode, the evaporation condensation component (2) works and the natural cooling surface cooler (3) stops working; When the heat exchange component is in the natural cooling mode, the natural cooling surface cooler (3) works and the evaporative condensing component (2) stops working; When the heat exchange component is in the mixed refrigeration mode, both the natural cooling condenser (3) and the evaporative condensation component (2) are in operation.

2. The heat exchange assembly according to claim 1, characterized in that: The evaporative condensing component (2) comprises an evaporative condenser (21) and a spray mechanism (22); the evaporative condenser (21) is arranged below the natural cooling surface cooler (3); the spray mechanism (22) is arranged between the evaporative condenser (21) and the natural cooling surface cooler (3); and the spray direction of the spray mechanism (22) is toward the evaporative condenser (21).

3. The heat exchange assembly according to claim 2, characterized in that: The heat exchange component also includes a fan (4); an air inlet (11) is formed on the frame (1) located below the evaporative condensation component (2); an air outlet is formed on the top of the frame (1); and the fan (4) is arranged at the air outlet.

4. The heat exchange assembly according to claim 2, characterized in that: The evaporative condensation component (2) further comprises a packing structure (23), wherein the packing structure (23) is arranged below the evaporative condenser (21), and the frame (1) located below the packing structure (23) constitutes an air inlet cavity, and an air inlet (11) is arranged on a side wall of the frame (1), and the air inlet (11) is connected to the air inlet cavity.

5. The heat exchange assembly according to claim 2, characterized in that: The evaporation and condensation assembly (2) further comprises a water receiving tray and a driving structure, wherein the water receiving tray is located at the bottom of the frame (1), the water inlet of the driving structure is located inside the water receiving tray, and the water outlet of the driving structure is connected to the spraying mechanism (22).

6. The heat exchange assembly according to claim 1, characterized in that: The heat exchange medium in the natural cooling surface cooler (3) is ethylene glycol solution.

7. The heat exchange assembly according to claim 1, characterized in that: The heat exchange component also includes a temperature detection mechanism, which is arranged on the frame (1) and is capable of acquiring the ambient temperature of the area where the heat exchange component is located and controlling the operating mode of the heat exchange component according to the ambient temperature.

8. An air conditioning system, characterized in that: The heat exchange component comprises the heat exchange component described in any one of claims 1 to 7.

9. The air conditioning system according to claim 8, characterized in that: The number of the heat exchange components is multiple, the frames (1) in all the heat exchange components are arranged in parallel, the natural cooling condensers (3) in all the heat exchange components are arranged in parallel, and all the evaporation condensation components (2) are arranged in series.

10. The air conditioning system according to claim 8, characterized in that: The air conditioning system further comprises a natural cooling evaporator (5) and a compression evaporator (6); the natural cooling evaporator (3) and the natural cooling evaporator (5) constitute a natural cooling cycle; the evaporation condensation component (2) and the compression evaporator (6) constitute a compression cooling cycle; the natural cooling evaporator (5) is provided with a user water inlet; the compression evaporator (6) is provided with a user water outlet; and a water connection pipe is provided between the natural cooling evaporator (5) and the compression evaporator (6).

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