Air conditioning system

Abstract

The utility model discloses an air conditioning system. The air conditioning system comprises an air pipe, a liquid pipe and an indoor heat exchanger. The indoor heat exchanger is provided with an indoor heat exchange pipe, and the ratio of the outer diameter of the indoor heat exchange pipe to the outer diameter of the air pipe is 0.8-1. According to the air-conditioning system, the refrigerating capacity of the air-conditioning system is matched with the refrigerant circulation volume, so that the refrigeration requirement can be met, the cost can be reduced, and the installation efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air treatment devices, in particular to an air conditioning system. Background Art

[0002] In the related art, the air conditioning system is prone to the problem that the refrigerating capacity and the refrigerant circulation amount do not match. Especially for an air conditioning system with a small refrigeration demand, the refrigerating capacity of the air conditioning system is small, but the refrigerant circulation amount is large, which is likely to cause waste of resources and increase in cost. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an air conditioning system, in which the refrigerating capacity and the refrigerant circulation amount are matched, which can not only meet the refrigeration demand, but also reduce the cost and improve the installation efficiency.

[0004] The air conditioning system according to an embodiment of the utility model includes: an air pipe, a liquid pipe and an indoor heat exchanger. The indoor heat exchanger has indoor heat exchange pipes, and the ratio of the outer diameter of the indoor heat exchange pipes to the outer diameter of the air pipe is 0.8 - 1.

[0005] The air conditioning system according to an embodiment of the utility model can, by making the ratio of the outer diameter of the indoor heat exchange pipes in the indoor heat exchanger to the outer diameter of the air pipe be 0.8 - 1, reduce the outer diameter of the air pipe without changing the outer diameter of the indoor heat exchange pipes, so that the refrigerating capacity of the air conditioning system with a small refrigeration demand can match its refrigerant circulation amount, which can not only meet the refrigeration demand of users, but also reduce the raw material cost of the refrigerant and the material cost of the air pipe, and at the same time can also reduce the difficulty of the construction operation of installing the air pipe, thereby improving the installation efficiency.

[0006] According to some embodiments of the utility model, the ratio of the outer diameter of the air pipe to the outer diameter of the liquid pipe is 1.2 - 1.

[0007] According to some embodiments of the utility model, the outer diameter of the indoor heat exchange pipes is 4 mm - 6 mm.

[0008] According to some embodiments of the utility model, the air conditioning system further includes an outdoor heat exchanger, the outdoor heat exchanger has outdoor heat exchange pipes, and the outer diameter of the outdoor heat exchange pipes is 4 mm - 6 mm.

[0009] According to some embodiments of the utility model, the outer diameter of the air pipe is 6 mm.

[0010] In some embodiments of the utility model, the inner diameter of the air pipe is 5 mm - 5.8 mm.

[0011] According to some embodiments of the utility model, the outer diameter of the liquid pipe is 6 mm.

[0012] In some embodiments of the present utility model, the inner diameter of the liquid pipe is 5 mm - 5.8 mm.

[0013] According to some embodiments of the present utility model, the refrigerating capacity of the air-conditioning system is below 2.0 KW.

[0014] According to some embodiments of the present utility model, the refrigerant in the air-conditioning system is R32 refrigerant.

[0015] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 is a schematic diagram of an air-conditioning system according to an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 an enlarged view of part A in

[0019] REFERENCE NUMERALS:

[0020] 100, air-conditioning system; 101, indoor unit of the air conditioner; 102, outdoor unit of the air conditioner;

[0021] 1, gas pipe;

[0022] 2, liquid pipe;

[0023] 3, indoor heat exchanger;

[0024] 4, outdoor heat exchanger;

[0025] 5, compressor; 51, exhaust port; 52, suction port;

[0026] 6, throttling device;

[0027] 7, four-way valve; 71, first port, 72, second port; 73, third port; 74, fourth port;

[0028] 8, first stop valve;

[0029] 9, second stop valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] The air-conditioning system 100 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0034] As Figure 1 shown, the air-conditioning system 100 according to an embodiment of the present utility model includes an air pipe 1, a liquid pipe 2, and an indoor heat exchanger 3.

[0035] Specifically, the air-conditioning system 100 further includes a compressor 5, an outdoor heat exchanger 4, a four-way valve 7, and a throttling device 6. The four-way valve 7 has a first port 71, a second port 72, a third port 73, and a fourth port 74. The first port 71 is communicated with one of the second port 72 and the third port 73, and the fourth port 74 is communicated with the other of the second port 72 and the third port 73. The exhaust port 51 of the compressor 5 is communicated with the first port 71, and the suction port 52 of the compressor 5 is communicated with the fourth port 74. One end of the indoor heat exchanger 3 is communicated with the second port 72, and one end of the outdoor heat exchanger 4 is communicated with the third port 73. The other ends of the indoor heat exchanger 3 and the outdoor heat exchanger 4 are communicated with each other. The throttling device 6 is disposed between the indoor heat exchanger 3 and the outdoor heat exchanger 4.

[0036] The air-conditioning system 100 further includes a first stop valve 8 and a second stop valve 9. The first stop valve 8 is disposed between the indoor heat exchanger 3 and the four-way valve 7, and the second stop valve 9 is disposed between the indoor heat exchanger 3 and the throttling device 6. Among them, the pipeline between the indoor heat exchanger 3 and the first stop valve 8 is the gas pipe 1, and the pipeline between the indoor heat exchanger 3 and the throttling device 6 is the liquid pipe 2. The indoor heat exchanger 3 has indoor heat exchange pipes, and the ratio of the outer diameter of the indoor heat exchange pipes to the outer diameter of the gas pipe 1 is 0.8 - 1.

[0037] As Figure 1 shown in the example, the air conditioner has an indoor unit 101 and an outdoor unit 102. The indoor heat exchanger 3 is disposed inside the indoor unit 101, and the first stop valve 8, the four-way valve 7, the compressor 5, the outdoor heat exchanger 4, the throttling device 6, and the second stop valve 9 are disposed inside the outdoor unit 102. The gas pipe 1 and the liquid pipe 2 are used to connect the indoor unit 101 and the outdoor unit 102. The two ends of the gas pipe 1 are respectively connected to one end of the indoor heat exchange pipes and the first stop valve 8, and the two ends of the liquid pipe 2 are respectively connected to the other end of the indoor heat exchange pipes and the second stop valve 9. Thus, a refrigerant circuit can be formed between the indoor unit 101 and the outdoor unit 102, thereby realizing the refrigeration and heating functions of the air conditioner.

[0038] During the specific operation of the air conditioning system 100, the first stop valve 8 and the second stop valve 9 are opened. When the air conditioning system 100 is in the cooling state, the compressor 5 compresses the refrigerant into a high-temperature and high-pressure gas, and the high-pressure gaseous refrigerant flows to the outdoor heat exchanger 4 through the exhaust port 51 of the compressor 5, the first port 71 and the third port 73 of the four-way valve 7. The outdoor heat exchanger 4 can exchange heat with the external environment and condense and dissipate heat. The refrigerant flows in the outdoor heat exchanger 4 and releases heat to the external environment, thereby changing from gas to liquid. Then, the high-pressure liquid refrigerant flowing out of the outdoor heat exchanger 4 is depressurized when flowing through the throttling device 6, and the low-pressure liquid refrigerant flows to the indoor heat exchanger 3 through the second stop valve 9 and the liquid pipe 2. The indoor heat exchanger 3 can absorb heat. The refrigerant is heated and vaporized in the indoor heat exchange tube, changing from liquid to gas, thereby taking away the heat of the airflow flowing through the surface of the indoor heat exchanger 3, and the low-temperature airflow is sent into the room by the air conditioning indoor unit 101 to achieve the purpose of cooling. At the same time, the low-pressure gaseous refrigerant flows to the second port 72 and the fourth port 74 of the four-way valve 7 through the gas pipe 1 and the first stop valve 8, and then returns to the compressor 5 through the return port 52 to be compressed again, thereby forming a refrigerant cycle.

[0039] Therefore, the refrigerant circulation volume affects the refrigeration capacity of the air conditioning system 100, and the refrigerant circulation volume is related to the diameters of the gas pipe 1 and the liquid pipe 2. In the related art, the air conditioning system usually uses a gas pipe with an outer diameter of φ9.52mm and an indoor heat exchange pipe with an outer diameter of φ5mm or φ6mm, that is, the ratio of the outer diameter of the indoor heat exchange pipe to the outer diameter of the gas pipe is approximately 0.5-0.65. However, for some air conditioning systems, especially those with a small cooling capacity, the demand for the refrigerant circulation volume is not very large, and large-diameter gas pipes such as those with an outer diameter of φ9.52mm are still used, which can easily cause the problem of mismatch between the cooling capacity and the refrigerant circulation volume of the air conditioning system, and also lead to waste of pipeline and refrigerant resources.

[0040] In the present application, the ratio of the outer diameter of the indoor heat exchange pipe to the outer diameter of the air pipe 1 is increased to 0.8-1. When the outer diameter of the indoor heat exchange pipe remains unchanged, the outer diameter of the air pipe 1 is reduced, and the refrigerant filling amount is reduced accordingly, that is, the refrigerant circulation amount becomes smaller, which is more suitable for air-conditioning systems 100 with small cooling capacity requirements.

[0041] Meanwhile, the ratio of the outer diameter of the indoor heat exchange tube to the outer diameter of the gas pipe 1 is limited to be less than or equal to 1. That is, when the outer diameter of the indoor heat exchange tube remains unchanged, the outer diameter of the thinned gas pipe 1 will not be smaller than the outer diameter of the indoor heat exchange tube. The outer diameter of the gas pipe 1 is controlled within a reasonable range. As a result, the reduction in the refrigerant charge is limited, and the impact on the cooling capacity of the air conditioning system 100 is also limited. Especially for the air conditioning system 100 with a relatively small cooling demand, the cooling capacity of the air conditioning system 100 can match the refrigerant circulation volume, which can not only meet the user's cooling demand but also reduce the raw material cost of the refrigerant and the material cost of the gas pipe 1. At the same time, as the outer diameter of the gas pipe 1 becomes smaller, its overall weight is correspondingly reduced, and the difficulty of the construction operation for installing the gas pipe 1 can also be reduced, thereby improving the installation efficiency.

[0042] For the air conditioning system 100 according to the embodiment of the present utility model, by making the ratio of the outer diameter of the indoor heat exchange tube in the indoor heat exchanger 3 to the outer diameter of the gas pipe 1 be 0.8 - 1, the outer diameter of the gas pipe 1 can be reduced while the outer diameter of the indoor heat exchange tube remains unchanged, so that the cooling capacity of the air conditioning system 100 with a relatively small cooling demand can match its refrigerant circulation volume, which can not only meet the user's cooling demand but also reduce the raw material cost of the refrigerant and the material cost of the gas pipe 1. At the same time, the difficulty of the construction operation for installing the gas pipe 1 can also be reduced, thereby improving the installation efficiency.

[0043] In some embodiments of the present utility model, the ratio of the outer diameter of the gas pipe 1 to the outer diameter of the liquid pipe 2 is 1.2 - 1. The air conditioning system 100 usually uses a liquid pipe 2 with an outer diameter of φ6mm. When the outer diameter of the liquid pipe 2 remains unchanged, the outer diameter of the gas pipe 1 can be reduced, and the refrigerant charge will decrease accordingly, that is, the refrigerant circulation volume becomes smaller, which is more suitable for the air conditioning system 100 with a relatively small cooling demand, making the cooling capacity of the air conditioning system 100 match the refrigerant circulation volume, which can not only meet the user's cooling demand but also reduce the raw material cost of the refrigerant and the material cost of the gas pipe 1. At the same time, the difficulty of the construction operation for installing the gas pipe 1 can also be reduced, thereby improving the installation efficiency.

[0044] Of course, in another embodiment, the outer diameter of the liquid pipe 2 can also be reduced to φ5mm, and the outer diameter of the gas pipe 1 can be reduced to φ6mm, so that the ratio of the outer diameter of the gas pipe 1 to the outer diameter of the liquid pipe 2 is 1.2. At this time, although the refrigerant circulation volume becomes smaller, it can still meet the cooling capacity of the air conditioning system 100 with a relatively small cooling demand, making the cooling capacity of the air conditioning system 100 match the refrigerant circulation volume, which can not only meet the user's cooling demand but also reduce the raw material cost of the refrigerant and the material costs of the gas pipe 1 and the liquid pipe 2. At the same time, the difficulty of the construction operations for installing the gas pipe 1 and the liquid pipe 2 can also be reduced, thereby improving the installation efficiency.

[0045] In some embodiments of the present utility model, the outer diameter of the indoor heat exchange tube is 4 mm - 6 mm. Under the same volume of the indoor heat exchanger 3, as many indoor heat exchange tubes as possible can be arranged, so that the heat exchange area between the refrigerant in the indoor heat exchange tube and the air flow can be increased. At the same time, it is ensured that the refrigerant circulation volume can be guaranteed without the outer diameter of the indoor heat exchange tube being too small, thereby improving the heat exchange efficiency of the indoor heat exchanger 3 and the refrigeration and heating effects of the air conditioning system 100.

[0046] In some embodiments of the present utility model, as Figure 1 shown, the air conditioning system 100 further includes an outdoor heat exchanger 4. The outdoor heat exchanger 4 has outdoor heat exchange tubes, and the outer diameter of the outdoor heat exchange tubes is 4 mm - 6 mm. Under the same volume of the outdoor heat exchanger 4, as many outdoor heat exchange tubes as possible can be arranged, so that the heat exchange area between the refrigerant in the outdoor heat exchange tube and the external environment can be increased. At the same time, it is ensured that the refrigerant circulation volume can be guaranteed without the outer diameter of the outdoor heat exchange tube being too small, thereby improving the heat exchange efficiency of the outdoor heat exchanger 4 and the refrigeration and heating effects of the air conditioning system 100.

[0047] In some embodiments of the present utility model, the outer diameter of the gas pipe 1 is 6 mm. At this time, the indoor heat exchange tubes with an outer diameter of φ5 mm or φ6 mm commonly used in the air conditioning system 100 can be adopted, so that the ratio of the outer diameter of the indoor heat exchange tube to the outer diameter of the gas pipe 1 is 0.8 - 1, making the refrigerant charge more suitable for the air conditioning system 100 with a small refrigeration demand. The refrigeration capacity of the air conditioning system 100 can match the refrigerant circulation volume, which can not only meet the refrigeration demand of users, but also reduce the raw material cost of the refrigerant and the material cost of the gas pipe 1. At the same time, the difficulty of the construction operation of installing the gas pipe 1 can be reduced, thereby improving the installation efficiency.

[0048] In some embodiments of the present utility model, the inner diameter of the liquid pipe 2 is 5 mm - 5.8 mm, so that the wall thickness of the liquid pipe 2 is in the range of 0.1 mm - 0.5 mm, which can not only ensure the structural strength of the liquid pipe 2, but also avoid the reduction of the heat exchange effect, material waste and cost increase caused by the too thick wall thickness of the liquid pipe 2.

[0049] In some embodiments of the present utility model, the outer diameter of the liquid pipe 2 is 6 mm, which is the conventional diameter of the liquid pipe 2 used in the air conditioning system 100 and is convenient for processing and production. It can also cooperate with the gas pipe 1 and the indoor heat exchange tube, making the refrigerant charge more suitable for the air conditioning system 100 with a small refrigeration demand. The refrigeration capacity of the air conditioning system 100 can match the refrigerant circulation volume, which can not only meet the refrigeration demand of users, but also reduce the cost.

[0050] In some embodiments of the present utility model, the inner diameter of the liquid pipe 2 is 5 mm - 5.8 mm. Thereby, the wall thickness of the liquid pipe 2 is within the range of 0.1 mm - 0.5 mm, which can not only ensure the structural strength of the liquid pipe 2, but also avoid the reduction of heat exchange effect, material waste and cost increase caused by the over-thick wall thickness of the liquid pipe 2.

[0051] In some embodiments of the present utility model, the refrigerating capacity of the air-conditioning system 100 is below 2.0 KW. The ratio of the outer diameter of the indoor heat exchange pipe to the outer diameter of the gas pipe 1 is increased to 0.8 - 1. Without changing the outer diameter of the indoor heat exchange pipe, the outer diameter of the gas pipe 1 is reduced, and the refrigerant charge amount is reduced accordingly. Thus, it is more suitable for the air-conditioning system 100 with a refrigerating capacity below 2.0 KW, enabling the refrigerating capacity of the air-conditioning system 100 to match the refrigerant circulation amount, which can not only meet the refrigeration requirements of users, but also reduce the raw material cost of the refrigerant and the material cost of the gas pipe 1.

[0052] In some embodiments of the present utility model, the refrigerant in the air-conditioning system 100 is R32 refrigerant. The R32 refrigerant has high thermal conductivity and latent heat of vaporization, which can provide a stronger heat exchange effect, thus being beneficial to reducing the energy consumption and operating cost of the air-conditioning system 100. At the same time, the R32 refrigerant also has the advantages of high safety and environmental protection. Among them, when the ratio of the outer diameter of the indoor heat exchange pipe to the outer diameter of the gas pipe 1 is increased to 0.8 - 1, the refrigerant charge amount of the R32 refrigerant is approximately between 250 g and 350 g, which is more suitable for the air-conditioning system 100 with a smaller refrigeration demand.

[0053] Other components of the air-conditioning system 100 according to the embodiments of the present utility model, such as the first stop valve 8, the second stop valve 9, the outdoor heat exchanger 4, the compressor 5 and the throttling device 6, etc., are known to those of ordinary skill in the art and will not be described in detail here.

[0054] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An air conditioning system, characterized in that, Comprising: An air pipe and a liquid pipe; An indoor heat exchanger having indoor heat exchange pipes, wherein the ratio of the outer diameter of the indoor heat exchange pipes to the outer diameter of the air pipe is 0.8 - 1.

2. The air conditioning system according to claim 1, wherein The ratio of the outer diameter of the air pipe to the outer diameter of the liquid pipe is 1.2 - 1.

3. The air conditioning system according to claim 1, wherein The outer diameter of the indoor heat exchange pipes is 4 mm - 6 mm.

4. The air conditioning system according to claim 1, characterized in that Further comprising: An outdoor heat exchanger having outdoor heat exchange pipes, wherein the outer diameter of the outdoor heat exchange pipes is 4 mm - 6 mm.

5. The air conditioning system according to claim 1, wherein The outer diameter of the air pipe is 6 mm.

6. The air conditioning system according to claim 5, wherein, The inner diameter of the air pipe is 5 mm - 5.8 mm.

7. The air-conditioning system according to claim 1, wherein, The outer diameter of the liquid pipe is 6 mm.

8. The air-conditioning system according to claim 7, characterized in that, The inner diameter of the liquid pipe is 5 mm - 5.8 mm.

9. The air conditioning system according to claim 1, wherein The refrigerating capacity of the air conditioning system is below 2.0 KW.

10. The air conditioning system according to claim 1, characterized in that, The refrigerant in the air conditioning system is R32 refrigerant.

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