CN217685988U - Heat regenerator, refrigerating system and refrigerating equipment - Google Patents

Abstract

The application discloses regenerator, refrigerating system and refrigeration plant. The regenerator comprises a gas return pipe and an exhaust pipe. The air return pipe comprises an L-shaped cylinder body, an air return inlet part and an air return outlet part, wherein the air return inlet part and the air return outlet part extend from the cylinder body in a protruding mode, and the cylinder body comprises a top side and a bottom side which are opposite to each other. The exhaust pipe is arranged in the air return pipe in a penetrating mode and comprises an exhaust inlet end and an exhaust outlet end, the exhaust inlet end and the air return outlet portion are arranged at one end of the cylinder, and the exhaust outlet end and the air return inlet portion are arranged at the other end of the cylinder. This application sets up inside the barrel through setting up the blast pipe, and the barrel sets up to L shape, has restricted the displacement of blast pipe for the barrel inner wall can be hugged closely more firmly to the capillary, the noise and the vibration of lowering system. In addition, the exhaust inlet end and the return air outlet part are arranged at one end of the cylinder, and the exhaust outlet end and the return air inlet part are arranged at the other end of the cylinder, so that the flowing directions of the exhaust and the return air are opposite, and the heat exchange efficiency of the exhaust and the return air is improved.

Description

Heat regenerator, refrigerating system and refrigerating equipment

Technical Field

The application relates to the technical field of heat exchange, in particular to a heat regenerator, a refrigerating system and refrigerating equipment.

Background

Traditional regenerator usually adopts and twines the blast pipe on the muffler, or carry out the heat transfer with the mode that blast pipe and muffler pipe sleeve are in the same place, refrigerating system is when normal operation, traditional regenerator can lead to the regenerator to produce certain noise because of the vibrations of blast pipe, among the prior art, the regenerator does not possess silencer shock-absorbing function or the absorbing effect of noise elimination weak, the system noise can't be eliminated, thereby need add the silencer in refrigerating system and improve the great condition of system noise, make manufacturing cost increase, and lead to refrigerating system to occupy the space grow.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a heat regenerator, a refrigerating system and refrigerating equipment.

The embodiment of the application provides a heat regenerator. The heat regenerator comprises a gas return pipe and an exhaust pipe. The air return pipe comprises an L-shaped cylinder body, an air return inlet part and an air return outlet part, wherein the air return inlet part and the air return outlet part protrude and extend from the cylinder body; the exhaust pipe is arranged in the air return pipe in a penetrating mode and comprises an exhaust inlet end and an exhaust outlet end, the exhaust inlet end and the air return outlet portion are arranged at one end of the cylinder, and the exhaust outlet end and the air return inlet portion are arranged at the other end of the cylinder.

In some embodiments, the heat regenerator further includes an oil return part, the oil return part is disposed in the cylinder and is communicated with the air return outlet, the return air entering the cylinder from the air return inlet is output from the air return outlet through the oil return part, and a side wall of the oil return part is provided with an oil return hole, and the oil return hole is used for at least part of the lubricating oil to enter the oil return part to be output from the air return outlet.

In some embodiments, a distance between the oil return hole and the bottom side is smaller than a distance between the return air outlet portion and the bottom side.

In certain embodiments, the distance between the oil return hole and the bottom side is less than or equal to 1/4 of the inner diameter of the barrel.

In some embodiments, the oil return member includes an oil return bend, an extending section, and an oil return baffle, one end of the oil return bend is connected to the air return outlet, the other end of the oil return bend is connected to one end of the extending section, the extending direction of the extending section is the same as the transmission direction of the return air at the air return outlet, and the other end of the extending section is connected to the oil return baffle.

In some embodiments, the oil return bend is of a U-shaped structure, and the oil return hole is disposed on a bottom end side wall of the oil return bend; the extension section comprises a first side and a second side which are opposite, wherein the first side is closer to the bottom side than the second side; the outermost end of the first side is outwards expanded to form an installation part, and the oil return baffle is arranged on the installation part; the oil return baffle is opposite to the outermost end of the second side at intervals, and the projection of the opening of the extension section is within the range of the oil return baffle.

In some embodiments, the exhaust pipe is coiled inside the cylinder to form a spiral structure, and the outer periphery of the spiral structure is abutted with the inner wall of the cylinder.

In some embodiments, the side surface of the air return inlet part is provided with a perforation, and the exhaust outlet end extends out of the air return pipe from the perforation and is welded to the perforation in a sealing mode; the side wall of the air return outlet part is provided with a first through hole, the side wall of the oil return part is provided with a second through hole, and the exhaust inlet end enters the interior of the air return outlet part from the second through hole, extends out of the air return pipe from the first through hole and is welded to the first through hole in a sealing mode.

In some embodiments, the side surface of the air return inlet part is provided with a perforation, and the exhaust outlet end extends out of the air return pipe from the perforation and is welded to the perforation in a sealing mode; the barrel is provided with a through hole, and the exhaust inlet end extends out of the through hole to the outside of the air return pipe and is welded in the through hole in a sealing mode.

The embodiment of the application provides a refrigerating system, refrigerating system includes compressor, condenser, evaporimeter and above-mentioned arbitrary embodiment the regenerator, the compressor with the condenser intercommunication, the condenser with the exhaust inlet end intercommunication of blast pipe, the exhaust outlet end of blast pipe with the entry intercommunication of evaporimeter, the export of evaporimeter with return air inlet portion intercommunication, return air outlet portion with the entry intercommunication of compressor.

The embodiment of the application provides a refrigerating device, which comprises the refrigerating system of the embodiment.

Regenerator, refrigerating system and refrigeration plant in this application, through wearing to locate the muffler with the blast pipe, the barrel sets up to L shape for the blast pipe can paste tight barrel inner wall more firmly inside the barrel, reduces the blast pipe at the inside vibration of barrel, and the noise of lowering system makes the regenerator possess noise elimination absorbing effect, can omit the silencer among the refrigerating system, reduction in production cost reduces the space that refrigerating system occupied. In addition, the oil return piece is arranged in the cylinder body, and an oil return hole is formed in the oil return piece and used for allowing at least part of lubricating oil to enter the oil return piece and to be output from the air return outlet. Therefore, the heat regenerator can increase the functions of liquid storage and oil return while exchanging heat.

Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the external construction of a regenerator in certain embodiments of the present application;

FIG. 2 is a schematic view of the internal construction of a regenerator in certain embodiments of the present application;

FIG. 3 is a schematic view of the internal structure of a regenerator in certain embodiments of the present application;

FIG. 4 is a schematic diagram of a refrigeration system according to certain embodiments of the present application;

fig. 5 is a schematic diagram of the construction of a refrigeration unit in certain embodiments of the present application.

Description of the main element symbols:

a refrigeration device 1000;

a refrigeration system 100;

a heat regenerator 10, a dry filter 20, an evaporator 30, a throttle member 40, a compressor 50, and a condenser 60;

the air return pipe 12, the cylinder body 121, the top side 1211, the bottom side 1213, the first through hole 1215, the second through hole 1216, the third through hole 1217, the fourth through hole 1218, the air return inlet portion 123 and the air return outlet portion 125;

an exhaust pipe 16, an exhaust inlet port 161, an exhaust outlet port 163;

the oil return piece 18, the oil return bend 181, the extension 183, the mounting portion 185, the oil return baffle 187 and the oil return hole 189.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the embodiments of the present application, and are not construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, it is worth mentioning that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships that are based on those shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the embodiments of the present application. The features defined as "first", "second" may explicitly or implicitly include one or more of the features described. In the description of the embodiments of the present application, "a plurality" means two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

In embodiments of the present application, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the application. To simplify the disclosure of embodiments of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Embodiments of the present application may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. Embodiments of the present application provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 and 2, a regenerator 10 is provided in the present embodiment. Regenerator 10 includes a return tube 12 and an exhaust tube 16. The air return pipe 12 includes an L-shaped cylinder 121, and a return air inlet 123 and a return air outlet 125 protruding from the cylinder 121, wherein the cylinder 121 includes a top 1211 and a bottom 1213 opposite to each other. The exhaust pipe 16 is disposed through the return pipe 12 and includes an exhaust inlet 161 and an exhaust outlet 163, the exhaust inlet 161 and the return outlet 125 are disposed at one end of the cylinder 121, and the exhaust outlet 163 and the return inlet 123 are disposed at the other end of the cylinder 121.

The utility model provides a regenerator 10 is through wearing to locate muffler 12 with blast pipe 16, and barrel 121 sets up to L shape for blast pipe 16 can paste the inner wall of barrel 121 more firmly inside barrel 121, reduces the noise and the vibration of refrigerating system 100 (shown in fig. 4), makes regenerator 10 possess the effect of shock attenuation noise elimination, can omit the silencer in refrigerating system 100, reduction in production cost reduces the space that refrigerating system 100 occupied. In addition, the exhaust inlet 161 and the return outlet 125 are disposed at one end of the cylinder 121, the exhaust outlet 163 and the return inlet 123 are disposed at the other end of the cylinder 121, and the high-temperature refrigerant in the exhaust pipe 16 and the low-temperature refrigerant in the return pipe 12 realize counter-flow heat exchange in the heat regenerator 10, and the refrigerant flow directions are opposite, so that the heat exchange time is prolonged, and the heat exchange efficiency is improved.

It should be noted that the muffler 12 and the exhaust pipe 16 are isolated from each other, that is, the low-temperature refrigerant in the muffler 12 and the high-temperature refrigerant in the exhaust pipe 16 do not contact each other to perform heat exchange, so as to avoid that the cooling medium between the muffler 12 and the exhaust pipe 16 leaks to reduce the heat exchange efficiency and affect the refrigeration effect.

In some embodiments, the oil return member 18 is disposed in the cylinder 121 and communicates with the air return outlet 125, the return air entering the cylinder 121 from the air return inlet 123 is output from the air return outlet 125 through the oil return member 18, and a side wall of the oil return member 18 is provided with an oil return hole 189, and the oil return hole 189 is used for supplying at least part of the lubricating oil to the oil return member 18 to output from the air return outlet 125. The oil return member 18 is disposed inside the cylinder 121, and the oil return member 18 is communicated with the air return outlet 125, and after the return air enters the cylinder 121 from the air return inlet 123, the return air is output from the air return outlet 125 through the oil return member 18, and the return air and the lubricating oil are separated and accumulated inside the cylinder 121 while exchanging heat, so that the regenerator 10 plays a role of storing liquid. An oil return hole 189 is provided in the oil return member 18 so that at least part of the lubricating oil can enter the oil return member 18 to be output from the return-air outlet portion 125. Thus, the regenerator 10 can increase the functions of liquid storage and oil return while exchanging heat.

It should be noted that, in some embodiments, the number of the oil return holes 189 formed in the side wall of the oil return member 18 may be one or more, and is not limited herein.

Specifically, referring to fig. 3, in some embodiments, the cylinder 121 includes opposing top and bottom sides 1211, 1213, and the distance between the oil return hole 189 and the bottom side 1213 is less than the distance between the air return outlet 125 and the bottom side 1213.

In some embodiments, when the cartridge 121 is mounted to the refrigeration device 1000 (shown in fig. 5), the top side 1211 of the cartridge 121 is higher than the bottom side 1213 of the cartridge 121 relative to the bottom of the refrigeration device 1000. The distance between the oil return hole 189 and the bottom side 1213 is the distance from the center of the oil return hole 189 to the bottom side 1213 of the cylinder 121. The distance between the return air outlet 125 and the bottom side 1213 is the distance from the center of the return air outlet 125 to the bottom side 1213 of the cylinder 121 or the distance from the lower sidewall of the return air outlet 125 to the bottom side 1213 of the cylinder 121. It should be noted that the center of the oil return hole 189 is the geometric center of the oil return hole 189, and the center of the return air outlet 125 is the geometric center of the return air outlet 125.

In some embodiments, the distance between oil return hole 189 and bottom side 1213 is less than or equal to 1/4 of the inner diameter of barrel 121.

It should be noted that, since the lubricant oil entrained in the return air is separated in the cylinder 121 and then accumulated on the bottom side 1213, when the distance from the oil return hole 189 to the bottom side 1213 is greater than 1/4 of the inner diameter of the cylinder 121, the oil return hole 189 cannot be immersed in the lubricant oil, the lubricant oil cannot normally enter the oil return member 18 and then is discharged to the compressor 50, and therefore, the amount of lubricant oil in the compressor 50 (shown in fig. 4) is small, the compression efficiency is low, and the overall refrigeration efficiency is poor. When the distance from the oil return hole 189 to the bottom side 1213 is less than or equal to 1/4 of the diameter of the cylinder 121, part of the oil separated from the return air can smoothly return to the compressor 50 through the oil return member 18 to ensure the normal operation of the compressor 50, and at this time, part of the oil is accumulated on the bottom side 1213 of the cylinder 121 to prevent the oil from returning to the compressor 50 at one time, so that the heat regenerator 10 functions as a liquid reservoir.

In some embodiments, the oil return member 18 includes an oil return bend 181, an extension section 183, and an oil return baffle 187, one end of the oil return bend 181 is connected to the return air outlet 125, the other end of the oil return bend 181 is connected to one end of the extension section 183, the extension section 183 extends in the same direction as the return air is conveyed through the return air outlet 125, and the other end of the extension section 183 is connected to the oil return baffle 187.

The return air entering the cylinder 121 through the return air inlet 123 is blocked by the oil return baffle 187 and cannot directly enter the oil return member 18, so that the return air is prevented from directly entering the oil return member 18 and then being discharged from the return air outlet 125, the oil return baffle can change the return air path, the retention time of the return air in the heat regenerator 10 is prolonged, and the heat exchange efficiency is improved. An oil return hole 189 is provided in a side wall of the return elbow 181 to ensure that oil can enter the return member 18 through the oil return hole 189 and be discharged through the return air outlet 125.

It should be noted that, in some embodiments, the oil return bend 181 has a U-shaped structure, the oil return hole 189 is disposed on a side wall of a bottom end of the oil return bend 181, the U-shaped structure is relatively simple in processing and convenient to install, and the oil return hole 189 is disposed on a bottom side of the oil return bend 181, so that oil collected in the cylinder 121 can enter the oil return member 18 through the oil return hole 189 and then be discharged through the air return outlet 125. Extension section 183 includes a first side and a second side, and when regenerator 10 is mounted to refrigeration apparatus 1000 (shown in fig. 5), the first side of extension section 183 is higher than the second side of extension section 183 with respect to the bottom of refrigeration apparatus 1000. The outermost end of the first side is formed with a mounting portion 185, the oil return baffle 187 is arranged on the mounting portion 185, and the oil return baffle 187 is opposite to the outermost end of the second side at a spacing.

Specifically, in some embodiments, the projection of the opening of the extending section 183 is within the range of the oil return baffle 187, that is, the oil return baffle 187 can block the opening of the extending section 183, so as to ensure that the return air entering the cylinder 121 from the return air inlet 123 cannot directly enter the oil return part 18 through the extending section 183, thereby improving the heat exchange efficiency.

In some embodiments, the exhaust pipe 16 is coiled inside the cylinder 121 to form a spiral structure, and the outer periphery of the spiral structure is abutted against the inner wall of the cylinder 121.

The exhaust pipe 16 in the cylinder 121 is coiled to form a spiral structure, the spiral elbow processing technology is simple, the exhaust flows in the exhaust pipe 16 and rotates centrifugally, the return air flows through the exhaust pipe 16 from the return air inlet part 123 and is output from the return air outlet part 125 after heat exchange, the heat exchange area and the heat exchange efficiency between the return air and the exhaust air are fully increased by using a counter-flow heat return mode, the exhaust pipe 16 is arranged to be of a spiral structure, the heat exchange area of the exhaust pipe 16 is increased, the heat exchange effect of the exhaust air on the return air is strengthened, and the refrigeration effect is enhanced.

It should be noted that, in some embodiments, the outer diameter of the spiral structure is equal to or slightly smaller than the inner diameter of the cylinder 121, so that the exhaust pipe 16 is in close contact with the inner wall of the cylinder 121, and thus the vibration of the exhaust pipe 16 is reduced, and the noise is reduced.

Referring to fig. 3, in some embodiments, the side wall of the return air inlet 123 is provided with a through hole, and the exhaust outlet 163 extends from the through hole to the outside of the return air pipe 12 and is hermetically welded to the through hole. The side wall of the return air outlet portion 125 is provided with a first through hole 1215, the side wall of the return oil bend 181 is provided with a second through hole 1216, and the exhaust inlet end 161 enters the interior of the return air outlet portion 125 from the second through hole 1216, extends out of the return air pipe 12 from the first through hole 1215, and is hermetically welded to the first through hole 1215. Therefore, the heat exchange area between the exhaust pipe 16 and the air return pipe 12 is enlarged, the heat exchange effect is enhanced, and the heat exchange efficiency is improved.

Referring to fig. 1, in some embodiments, a third through hole 1217 and a fourth through hole 1218 may be disposed on the cylinder 121, for example, the third through hole 1217 is disposed at a side close to the return air outlet 125, and the fourth through hole 1218 is disposed at an end close to the return air inlet 123. The exhaust inlet end 161 is penetrated out of the cylinder 121 through the third through hole 1217 and hermetically welded to the third through hole 1217, and the exhaust outlet end 163 is penetrated out of the cylinder 121 through the fourth through hole 1218 and hermetically welded to the fourth through hole 1218. Of course, in another example, the exhaust inlet end 161 may pass out of the opening of the return air outlet 125 to the outside of the cylinder 121, and the exhaust outlet end 163 passes out of the opening of the return air inlet 123 to the outside of the cylinder 121. In still another example, the exhaust inlet end 161 is passed out of the opening of the return air outlet portion 125 to the outside of the cylinder 121, and the exhaust outlet end 163 is passed out of the cylinder 121 through the fourth through hole 1218 and is seal-welded to the fourth through hole 1218. In a further example, the exhaust inlet end 161 is penetrated to the outside of the cylinder 121 through the third through hole 1217 and is hermetically welded to the third through hole 1217, and the exhaust outlet end 163 is penetrated from the opening of the return air inlet portion 123 to the outside of the cylinder 121.

It should be noted that, in some embodiments, the sealing of the through hole may also be a packing sealing, a thread sealing, or the like, which is not limited herein. Seal the through-hole, guarantee that return air and exhaust can not reveal, and then lead to the refrigeration effect to descend, and compressor 50 can't cool off and lead to damaging.

Referring to fig. 5, the refrigeration system 100 according to the present application includes the regenerator 10 according to any of the above embodiments, and specifically, the refrigeration system 100 further includes a compressor 50, a condenser 60, a dry filter 20, a throttling component 40, and an evaporator 30, an outlet of the compressor 50 is communicated with an inlet of the condenser 60, an outlet of the condenser 60 is communicated with an exhaust gas inlet 161, an exhaust gas outlet 163 is communicated with an inlet of the evaporator 30 after passing through the dry filter 20 and the throttling component 40, an outlet of the evaporator 30 is communicated with a return gas inlet 123, and a return gas outlet 125 is communicated with an inlet of the compressor 50.

Specifically, after the high-temperature refrigerant and the low-temperature refrigerant pass through the heat exchange in the heat regenerator 10, the low-temperature refrigerant is throttled and depressurized through the throttling component 40 before flowing to the evaporator 30, and the mode of firstly concentrating cooling and then throttling, namely the mode of constant-temperature depressurization, is compared with the mode of throttling and depressurizing at the same time, so that a better depressurization effect can be realized, and the refrigeration efficiency of the evaporator 30 is improved. The dry filter 20 is mainly used to remove excess water and part of impurities in the system, so as to prevent the system from being blocked. By adopting the refrigeration system 100 of the application, the heat regenerator 10 of any of the above embodiments replaces a return air heat exchanger tube assembly in the original system, does not need the heat exchange between the outer wall of the capillary tube and the return air tube 12, and enhances the refrigeration effect. The heat regenerator 10 of any of the above embodiments has the functions of storing liquid and returning oil to the compressor 50 by providing the oil return member 18, and replaces the liquid storage device in the original system, thereby simplifying the refrigeration system 100 and achieving the purpose of reducing the cost.

In refrigeration system 100, throttling element 40 can be a capillary tube disposed outside regenerator 10 and connected to exhaust outlet port 163. The capillary tube throttles and reduces the pressure of the refrigerant after being reheated by the heat regenerator 10 in the exhaust pipe 16, and the exhaust pressure can be obviously reduced by means of firstly carrying out centralized cooling and then throttling and reducing the pressure, so that the system energy efficiency is improved, the problem of high exhaust pressure in the refrigeration cycle is solved, the purpose of compressing the high-pressure refrigerant by the low-medium back-pressure compressor 50 is realized, and the production cost is reduced. In addition, the refrigerant flowing out of the front throttling exhaust pipe 16 is guaranteed to be in a supercooled liquid state by a mode of first concentrating temperature reduction and then throttling and pressure reduction, throttling efficiency is improved, and refrigerant sound in the throttling process is reduced.

Referring to fig. 5, in an embodiment of the present application, a refrigeration apparatus 1000 is provided, and the refrigeration apparatus 1000 includes the refrigeration system 100. The existing refrigeration equipment needs to add a muffler to reduce the noise generated during the operation of the refrigeration system 100, resulting in the waste of the internal space of the refrigeration equipment 1000 and increasing the production cost. By using the heat regenerator 10 of any of the above embodiments, a muffler can be omitted, and the production cost can be reduced. In some embodiments, the refrigeration device 1000 may be an electrical device having a refrigeration function, such as a refrigerator, an ice chest, an air conditioner, an ice maker, and the like, without limitation.

Referring to fig. 1 and 4, the refrigeration apparatus 1000 includes the refrigeration system 100, and by using the heat regenerator 10 in any of the embodiments, a muffler in the refrigeration system 100 is omitted, so as to reduce the volume of the refrigeration apparatus 1000 and reduce the production cost. Because the barrel 121 of the heat regenerator 10 is L-shaped, the space at the right-angle bent position of the refrigeration equipment 1000 can be reasonably utilized, the heat preservation of the heat preservation layer is facilitated, the internal space of the refrigeration equipment 1000 is fully utilized, and the interference of other devices during assembly is avoided.

In the description herein, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. The features defined as "first" and "second" may explicitly or implicitly include at least one feature. In the description of this application, "plurality" means at least two, and in one embodiment two, three, unless explicitly defined otherwise.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present application, which is defined by the claims and their equivalents.

Claims (10)

1. A regenerator, comprising:

the air return pipe comprises an L-shaped cylinder body, an air return inlet part and an air return outlet part, wherein the air return inlet part and the air return outlet part protrude and extend from the cylinder body; and

the exhaust pipe is arranged in the air return pipe in a penetrating mode and comprises an exhaust inlet end and an exhaust outlet end, the exhaust inlet end and the air return outlet portion are arranged at one end of the cylinder, and the exhaust outlet end and the air return inlet portion are arranged at the other end of the cylinder.

2. The regenerator of claim 1 further comprising:

the bent oil return piece is arranged in the barrel and communicated with the air return outlet, the air return inlet enters the barrel, the air return of the barrel passes through the oil return piece and is output from the air return outlet, an oil return hole is formed in the side wall of the oil return piece, and the oil return hole is used for supplying at least part of lubricating oil to enter the oil return piece so as to be output from the air return outlet.

3. The regenerator of claim 2 wherein the distance between the oil return hole and the bottom side is less than the distance between the return air outlet portion and the bottom side.

4. The regenerator of claim 3 wherein the distance between the oil return hole and the bottom side is less than or equal to 1/4 of the inner diameter of the cylinder.

5. The regenerator according to claim 2, wherein the oil return member comprises an oil return bend, an extending section and an oil return baffle, one end of the oil return bend is connected to the air return outlet, the other end of the oil return bend is connected to one end of the extending section, the extending direction of the extending section is the same as the conveying direction of the return air at the air return outlet, and the other end of the extending section is connected to the oil return baffle.

6. The regenerator of claim 5, wherein the return oil trap is a U-shaped structure, and the oil return hole is disposed on a bottom end side wall of the return oil trap; the extension section comprises a first side and a second side which are opposite, and the first side is closer to the bottom side than the second side; the outermost end of the first side is outwards expanded to form an installation part, and the oil return baffle is arranged on the installation part; the oil return baffle is opposite to the outermost end of the second side at intervals, and the projection of the opening of the extension section is within the range of the oil return baffle.

7. The regenerator of claim 1, wherein the exhaust pipe is coiled inside the cylinder to form a spiral structure, and an outer periphery of the spiral structure is abutted against an inner wall of the cylinder.

8. The regenerator of claim 2,

the side surface of the air return inlet part is provided with a through hole, and the exhaust outlet end extends out of the air return pipe from the through hole and is welded to the through hole in a sealing manner;

the side wall of the return air outlet part is provided with a first through hole, the side wall of the return oil part is provided with a second through hole, and the exhaust inlet end enters the return air outlet part from the second through hole, extends out of the return air pipe from the first through hole and is welded to the first through hole in a sealing manner; or

The barrel is equipped with the through-hole, exhaust inlet end certainly the through-hole stretches out to the muffler is outside to seal weld in the through-hole.

9. A refrigeration system comprising a compressor, a condenser, an evaporator and the regenerator of any one of claims 1-8; the compressor with the condenser intercommunication, the condenser with the exhaust inlet end intercommunication of blast pipe, the exhaust outlet end of blast pipe with the entry intercommunication of evaporimeter, the export of evaporimeter with return air inlet portion intercommunication, return air outlet portion with the entry intercommunication of compressor.

10. A refrigeration apparatus, characterized by comprising the refrigeration system of claim 9.

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