A gas heat exchange device for a micro direct-current variable frequency air conditioner or a fixed frequency air conditioner

Abstract

A gas heat exchange device for micro direct current variable frequency air conditioner or fixed frequency air conditioner, comprising an evaporation pipe and a ventilation pipe arranged in the evaporation pipe and penetrating the evaporation pipe at both ends; a cavity for conveying refrigerant is formed between the inner wall of the evaporation pipe and the outer wall of the ventilation pipe, the first end of the evaporation pipe is provided with a capillary pipe in communication with the cavity, and the tail end of the evaporation pipe is provided with a conveying pipe in communication with the cavity. The present application can replace the traditional fin type evaporator, has high heat exchange efficiency, small volume and is suitable for small and micro air conditioners.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners, and particularly relates to a gas heat exchange device for a micro direct-current variable-frequency air conditioner or a fixed-frequency air conditioner. BACKGROUND

[0002] The micro air conditioner has been developed for several years in foreign countries. With the development of the micro air conditioner industry, many institutions in China have begun to research in this field. In recent years, the household air conditioner market is highly competitive, and many enterprises have begun to focus on the field of small air conditioners and micro air conditioners. The small air conditioner is suitable for delivering cold air for a single person or a small range, and is suitable for situations such as camping and fishing. The micro air conditioner is also used in medical, military, and sentry box places.

[0003] The problem is that the small air conditioner and the micro air conditioner still use the traditional finned evaporator combined with a fan form to perform gas refrigeration heat exchange, which has low efficiency, is not conducive to the improvement of energy efficiency, and the finned evaporator is large in size, which is not conducive to the miniaturization of the air conditioner, and has certain limitations. Therefore, it is necessary to design a new type of gas heat exchange structure. SUMMARY

[0004] The purpose of the present application is to overcome the deficiencies of the prior art, and to provide a gas heat exchange device for a micro direct-current variable-frequency air conditioner or a fixed-frequency air conditioner, which can replace the traditional finned evaporator, has high heat exchange efficiency, is small in size, and is suitable for small and micro air conditioners.

[0005] To achieve the above purpose, the technical scheme provided by the embodiments of the present application is as follows:

[0006] A gas heat exchange device for a micro direct-current variable-frequency air conditioner or a fixed-frequency air conditioner, comprising an evaporation pipe and a ventilation pipe arranged in the evaporation pipe and penetrating out of the evaporation pipe at both ends;

[0007] The inner wall of the evaporation pipe and the outer wall of the ventilation pipe form a cavity for conveying refrigerant, the first end of the evaporation pipe is provided with a capillary tube communicating with the cavity, and the last end of the evaporation pipe is provided with a conveying pipe communicating with the cavity.

[0008] The ventilation pipe is a threaded pipe or a smooth pipe;

[0009] The ventilation pipe is made of copper or aluminum;

[0010] The evaporation pipe and the ventilation pipe are coaxially arranged.

[0011] The first end of the evaporation pipe is provided with a first connecting piece;

[0012] The first connecting piece comprises a first joint connected to the evaporation pipe, a first intermediate pipe connected to the first joint and located at the outer end of the first joint, and a first bypass pipe located at the side of the first intermediate pipe and connected to the first joint.

[0013] The venting pipe passes through the first intermediate pipe, the first joint and the evaporation pipe in sequence, and the capillary pipe is connected with the first bypass pipe.

[0014] The number of the capillary pipes is one; or the number of the capillary pipes is two or more and arranged at intervals.

[0015] The number of the first bypass pipes is the same as that of the capillary pipes and one-to-one corresponding.

[0016] The first connecting piece comprises a first skirt part connected outside the first joint and a first pipe body connected outside the first skirt part.

[0017] The diameter of the first skirt part gradually increases from the side close to the first joint to the side away from the first joint, and the first pipe body is provided with a first recess part separating the first pipe body into the first intermediate pipe and the first bypass pipe.

[0018] The evaporation pipe is provided with a second connecting piece at the end thereof.

[0019] The second connecting piece comprises a second joint connected with the evaporation pipe at the inner end, a second intermediate pipe connected with the second joint at the outer end of the second joint and a second bypass pipe connected with the second joint at the side of the second intermediate pipe.

[0020] The venting pipe passes through the evaporation pipe, the second joint and the second intermediate pipe in sequence, and the delivery pipe is connected with the second bypass pipe.

[0021] The number of the delivery pipes is one; or the number of the delivery pipes is two or more and arranged at intervals.

[0022] The number of the second bypass pipes is the same as that of the delivery pipes and one-to-one corresponding.

[0023] The second connecting piece comprises a second skirt part connected outside the second joint and a second pipe body connected outside the second skirt part.

[0024] The diameter of the second skirt part gradually increases from the side close to the second joint to the side away from the second joint, and the second pipe body is provided with a second recess part separating the second pipe body into the second intermediate pipe and the second bypass pipe.

[0025] The evaporation pipe is externally provided with a heat preservation layer.

[0026] The heat preservation layer is an rubber and plastic sleeve or heat preservation cotton.

[0027] The beneficial effects of the present application are as follows:

[0028] The application can replace the traditional finned evaporator, has high heat exchange efficiency and small volume, and is suitable for small and micro air conditioners. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A sectional view of an embodiment of the application.

[0030] Figure 2 A structural schematic view of an embodiment of the application.

[0031] Figure 3 A structural schematic view of an embodiment of the application.

[0032] Figure 4 A structural schematic view of a first connecting piece of an embodiment of the application.

[0033] Figure 5 A structural schematic view of a second connecting piece of an embodiment of the application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme of the embodiments of the application will be described clearly and completely below with reference to the drawings of the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, but not all the embodiments of the application.

[0035] Referring to Figures 1-5 The gas heat exchange device for the micro direct-current variable frequency air conditioner or the fixed frequency air conditioner comprises an evaporating pipe 1 and a ventilation pipe 2 arranged in the evaporating pipe 1 and penetrating the evaporating pipe 1 at both ends.

[0036] The inner wall of the evaporating pipe 1 and the outer wall of the ventilation pipe 2 form a cavity 3 for conveying refrigerant, the first end of the evaporating pipe 1 is provided with a capillary tube 4 in communication with the cavity 3, and the tail end of the evaporating pipe 1 is provided with a conveying pipe 5 in communication with the cavity 3.

[0037] When the application is used, the refrigerant is input into the cavity 3 of the evaporating pipe 1 from the capillary tube 4, the refrigerant is vaporized and absorbs heat, the pipe wall of the ventilation pipe 2 in the evaporating pipe 1 is rapidly cooled, the gas conveyed in the ventilation pipe 2 is also rapidly cooled, and the output end of the ventilation pipe 2 can supply low-temperature gas.

[0038] The cross-sectional area of the cavity 3 along the axial direction of the evaporating pipe 1 is greater than the cross-sectional area of the capillary tube 4 along the axial direction, and the refrigerant can be vaporized in the cavity 3 between the evaporating pipe 1 and the ventilation pipe 2.

[0039] The evaporation pipe 1 is equivalent to being wrapped on the side of the vent pipe 2, and this structure is beneficial to the heat exchange between the refrigerant in the cavity 3 and the vent pipe 2, and the present application can replace the traditional finned evaporator, has high heat exchange efficiency, small volume, and is suitable for small and micro air conditioners.

[0040] Further, the vent pipe 2 is a threaded pipe or a smooth pipe (also known as a light pipe);

[0041] The vent pipe 2 is made of copper or aluminum;

[0042] The evaporation pipe 1 and the vent pipe 2 are coaxially arranged, that is, the cavity 3 between the evaporation pipe 1 and the vent pipe 2 is arranged on the outside of the vent pipe 2, which is beneficial to the heat exchange between the refrigerant in the cavity 3 and the vent pipe 2.

[0043] Further, the first end of the evaporation pipe 1 is provided with a first connecting piece 7;

[0044] The first connecting piece 7 includes a first joint 8 connected with the evaporation pipe 1 at the inner end, a first intermediate pipe 9 connected with the first joint 8 and located at the outer end of the first joint 8, and a first bypass pipe 10 located at the side of the first intermediate pipe 9 and connected with the first joint 8;

[0045] The vent pipe 2 passes through the first intermediate pipe 9, the first joint 8 and the evaporation pipe 1 in sequence, and the capillary tube 4 is connected with the first bypass pipe 10.

[0046] The vent pipe 2 and the first intermediate pipe 9, and the capillary tube 4 and the first bypass pipe 10 are fixed by welding.

[0047] Further, the number of the capillary tube 4 is one; or the number of the capillary tube 4 is two or more and is arranged at intervals;

[0048] In the embodiment, the number of the capillary tube 4 is two and is located at both sides of the vent pipe 2.

[0049] The number of the first bypass pipe 10 is the same as that of the capillary tube 4 and corresponds one-to-one.

[0050] Further, the first connecting piece 7 includes a first skirt portion 15 connected outside the first joint 8 and a first pipe body 16 connected outside the first skirt portion 15, and the first joint 8, the first skirt portion 15 and the first pipe body 16 constitute the first connecting piece 7;

[0051] The diameter of the first skirt part 15 gradually increases from the side close to the first joint 8 to the side away from the first joint 8, that is, the diameter of the first pipe body 16 is greater than the diameter of the first joint 8, which facilitates the subsequent formation of the first intermediate pipe 9 and the first bypass pipe 10 on the first pipe body 16. The first pipe body 16 is provided with a first recess part 17 that separates the first pipe body 16 into the first intermediate pipe 9 and the first bypass pipe 10.

[0052] The first recess part 17 is punched on the first pipe body 16, and the first recess part 17 is punched on the upper and lower sides of the first pipe body 16, respectively;

[0053] In this embodiment, the first intermediate pipe 9 has the first recess part 17 on both left and right sides.

[0054] Further, the evaporation pipe 1 is provided with a second connecting piece 11 at the end thereof;

[0055] The second connecting piece 11 includes a second joint 12 connected to the evaporation pipe 1 at the inner end, a second intermediate pipe 13 connected to the second joint 12 and located at the outer end of the second joint 12, and a second bypass pipe 14 located at the side of the second intermediate pipe 13 and in communication with the second joint 12;

[0056] The air pipe 2 passes through the evaporation pipe 1, the second joint 12 and the second intermediate pipe 13 in sequence, and the delivery pipe 5 is connected to the second bypass pipe 14.

[0057] The air pipe 2 and the second intermediate pipe 13, and the delivery pipe 5 and the second bypass pipe 14 are fixed by welding.

[0058] Further, the number of the delivery pipe 5 is one; or the number of the delivery pipe 5 is two or more and arranged at intervals;

[0059] In this embodiment, the number of the delivery pipe 5 is two and located at both sides of the air pipe 2.

[0060] The number of the second bypass pipe 14 is the same as the number of the delivery pipe 5 and corresponds one by one.

[0061] Further, the second connecting piece 11 includes a second skirt part 18 connected to the outer side of the second joint 12 and a second pipe body 19 connected to the outer side of the second skirt part 18, and the second joint 12, the second skirt part 18 and the second pipe body 19 constitute the second connecting piece 11;

[0062] The diameter of the second skirt part 18 gradually increases from the side close to the second joint 12 to the side away from the second joint 12, that is, the diameter of the second pipe body 19 is greater than the diameter of the second joint 12, so as to facilitate subsequent formation of the second intermediate pipe 13 and the second bypass pipe 14 on the second pipe body 19, and the second pipe body 19 is provided with the second recess 20 for separating the second pipe body 19 into the second intermediate pipe 13 and the second bypass pipe 14.

[0063] The second recess 20 is punched on the second pipe body 19, and the second recess 20 is punched on the upper and lower sides of the second pipe body 19 respectively;

[0064] In the embodiment, the second intermediate pipe 13 is provided with the second recess 20 on the left and right sides.

[0065] Further, the evaporation pipe 1 is externally provided with a heat preservation layer 6.

[0066] The heat preservation layer 6 has the functions of heat insulation and heat preservation, and the heat preservation layer 6 is arranged to weaken the heat exchange between the evaporation pipe 1 and the external gas, and to ensure the heat exchange effect between the refrigerant in the cavity 3 and the vent pipe 2.

[0067] Further, the heat preservation layer 6 is an rubber plastic sleeve or thermal insulation cotton.

[0068] In the embodiment, the heat preservation layer 6 is an rubber plastic sleeve.

[0069] When the application is applied to an air conditioner, the input end of the capillary tube 4 is connected to the output end of an air conditioner condenser, the input end of the air conditioner condenser is connected to the output end of an air conditioner compressor, the output end of the conveying pipe 5 is connected to the input end of the air conditioner compressor, and the cavity 3 between the capillary tube 4, the evaporation pipe 1 and the vent pipe 2, the conveying pipe 5, the air conditioner compressor and the air conditioner condenser form a refrigerant circulation loop.

[0070] The input end of the vent pipe 2 is connected to a gas conveying device, the gas conveying device is a fan or a gas pump, and the output end of the vent pipe 2 directly faces a position needing to be cooled, or the output end of the vent pipe 2 is connected to a pipeline, and the output end of the pipeline faces the position needing to be cooled.

[0071] The above is the preferred scheme of the application, which shows and describes the basic principle, main features and advantages of the application. It should be understood by those skilled in the art that the application is not limited by the above embodiments, and the above embodiments and the description in the specification only illustrate the principle of the application. Various changes and improvements can be made without departing from the spirit and scope of the application, and these changes and improvements all fall within the scope of the application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A gas heat exchange device for a micro DC inverter air conditioner or a fixed frequency air conditioner, characterized in that, The evaporating pipe (1) and the ventilation pipe (2) are coaxially arranged. The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The ventilation pipe (2) is a threaded pipe or a smooth pipe.

2. The gas heat exchange device for a micro DC inverter air conditioner or a fixed frequency air conditioner according to claim 1, characterized in that, The ventilation pipe (2) is made of copper or aluminum. The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7).

3. The gas heat exchange device for a micro DC inverter air conditioner or a fixed frequency air conditioner according to claim 1, characterized in that, The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7).

4. The gas heat exchange device for a micro DC inverter air conditioner or a fixed frequency air conditioner according to claim 1, characterized in that, The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7).

5. The gas heat exchange device for a micro DC inverter air conditioner or a fixed frequency air conditioner according to claim 4, characterized in that, The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7).

6. The gas heat exchange device for a micro DC inverter air conditioner or a fixed frequency air conditioner according to claim 4, characterized in that, The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). The first end of the evaporating pipe (1) is provided with a first connecting piece (7). 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7. The gas heat exchange device for a micro DC inverter air conditioner or a fixed frequency air conditioner according to claim 1, characterized in that, The evaporation pipe (1) is externally sleeved with a heat preservation layer (6).

8. The gas heat exchange device for a micro DC inverter air conditioner or a fixed frequency air conditioner according to claim 7, characterized in that, The heat preservation layer (6) is an elastic plastic sleeve or heat preservation cotton.

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