Condenser and air conditioning unit with same

Abstract

The utility model provides a condenser and an air conditioning unit with the condenser, the condenser comprises a shell, an air outlet pipe and a heat exchange pipe, and the shell defines a cavity; the air outlet pipe is arranged on the shell in a penetrating mode, one part of the air outlet pipe is located in the cavity and communicates with the cavity, and one part of the air outlet pipe and the wall face of the cavity form an annular flow guide cavity extending in the vertical direction; the shell is provided with a first air inlet communicating with the annular flow guide cavity so that a gaseous refrigerant blown in from the first air inlet can flow in the circumferential direction of the air outlet pipe. A liquid outlet part is arranged at the bottom of the cavity, and the inlet end of the liquid outlet part is located above the bottom surface of the cavity; the heat exchange pipe is arranged on the shell in a penetrating mode, and a part of the heat exchange pipe is arranged in the annular flow guide cavity. According to the condenser, oil liquid in the gaseous refrigerant can be separated out, an air conditioning unit does not need to be additionally provided with an oil separation device, therefore, the space for arranging the oil separation device is saved, and the overall size and manufacturing cost of the air conditioning unit are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air conditioning unit, in particular to a condenser and air conditioning unit with it. BACKGROUND

[0002] The water-cooled main machine of air conditioning unit is composed of evaporator, condenser, compressor and throttling device. The gaseous refrigerant discharged by the unit compressor in the related art carries oil droplets, which needs to be separated from the lubricating oil by the oil separation device. However, the setting of the oil separation device in the unit not only makes the manufacturing cost of the unit high, but also makes the overall size of the unit large, causing the problem of large space occupied by the unit. SUMMARY

[0003] In view of the above problems, the utility model is provided to overcome the above problems or at least partially solve the above problems. The condenser of the air conditioning unit can separate the oil in the gaseous refrigerant, so that the air conditioning unit does not need to additionally set the oil separation device, thereby saving the space for setting the oil separation device and reducing the overall size and manufacturing cost of the air conditioning unit.

[0004] Specifically, the utility model provides a condenser.

[0005] The condenser of the utility model comprises a shell, the shell defines a cavity, an air outlet pipe, the air outlet pipe is arranged on the shell, a part of the air outlet pipe is located in the cavity and communicates with the cavity, a part of the air outlet pipe and the wall surface of the cavity form an annular flow guide cavity extending in the up-down direction, the shell is provided with a first air inlet communicating with the annular flow guide cavity, so as to make the gaseous refrigerant blown from the first air inlet flow along the circumference of the air outlet pipe, the bottom of the cavity is provided with a liquid outlet part, the inlet end of the liquid outlet part is located above the bottom surface of the cavity, and a heat exchange pipe is arranged on the shell, and a part of the heat exchange pipe is arranged in the annular flow guide cavity.

[0006] In some embodiments, the liquid outlet part is arranged on the bottom surface of the cavity, and the opening of the inlet end faces upward.

[0007] In some embodiments, the projection of the first air inlet on a plane perpendicular to the extension direction of the first air inlet is located between the projection of the air outlet pipe on the plane and the projection of the side wall surface of the cavity; preferably, the projection of the first air inlet on the plane is in contact with the projection of the side wall surface of the cavity.

[0008] In some embodiments, the heat exchange pipe is a plurality of heat exchange pipes, and the plurality of heat exchange pipes are arranged at intervals in the circumferential direction of the air outlet pipe.

[0009] In some embodiments, the portion of each of the heat exchange pipes extends helically in the up-down direction and is arranged around the outside of the air outlet pipe; or, each of the heat exchange pipes extends in the up-down direction and is arranged outside of the air outlet pipe.

[0010] In some embodiments, the shell comprises a cylinder body, a first end cover and a second end cover respectively covering the upper end and the lower end of the cylinder body, and the cylinder body, the first end cover and the second end cover define the chamber therebetween.

[0011] The first end cover comprises a first tube plate and a first cover body, the first cover body is provided with a first opening in communication with the outside, one of a converging cavity and a diverging cavity is defined between the first tube plate and the first cover body, a plurality of first through holes are provided on the first tube plate, and the upper end of each of the heat exchange pipes is correspondingly arranged in the first through hole, so that each of the heat exchange pipes is in communication with the one of the converging cavity and the diverging cavity.

[0012] The second end cover comprises a second tube plate and a second cover body, the second cover body is provided with a second opening in communication with the outside, the other one of the converging cavity and the diverging cavity is defined between the second tube plate and the second cover body, a plurality of second through holes are provided on the second tube plate, and the lower end of each of the heat exchange pipes is correspondingly arranged in the second through hole, so that each of the heat exchange pipes is in communication with the other one of the converging cavity and the diverging cavity.

[0013] In some embodiments, the first tube plate is flat, and the upper ends of the plurality of heat exchange pipes are flush with the upper surface or the lower surface of the first tube plate; the second tube plate is flat, and the lower ends of the plurality of heat exchange pipes are flush with the upper surface or the lower surface of the second tube plate.

[0014] In some embodiments, the condenser further comprises a liquid outlet pipe, the liquid outlet pipe sequentially passes through the second cover body and the second tube plate and extends into the chamber, and a portion of the liquid outlet pipe extending into the chamber forms the liquid outlet portion; preferably, the distance between the inlet end of the liquid outlet portion and the bottom surface of the chamber is 2mm-8mm.

[0015] In some embodiments, the portion of the air outlet pipe is provided with a second air inlet, the second air inlet is located below the first air inlet, and the distance between the second air inlet and the bottom surface of the chamber is 200mm-300mm.

[0016] The air conditioning unit of the embodiments of the present application comprises the condenser of any one of the above.

[0017] The condenser of the embodiment of the utility model, not only can make gaseous refrigerant and the refrigerant of heat exchange pipe in annular flow guide chamber carry out heat exchange, but also in the heat exchange process of gaseate refrigerant, gaseate refrigerant flows in annular flow guide chamber and can form cyclone, to separate the oil liquid in gaseate refrigerant by centrifugal force generated when cyclone flows.

[0018] In addition, when the oil liquid flows out through the import end of the liquid outlet, the solid impurities at the bottom of the oil liquid are not easy to be discharged through the import end due to the higher import end of the liquid outlet than the bottom surface of the chamber, so that the oil liquid discharged from the liquid outlet is more pure.

[0019] The above and other objects, advantages and features of the present utility model will become more apparent from the following detailed description of the specific embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the drawings:

[0021] Figure 1 is a schematic structural view of the condenser of the embodiment of the utility model;

[0022] Figure 2 is a sectional schematic structural view of the condenser of the embodiment of the utility model;

[0023] Figure 3 is a sectional schematic structural view of the condenser of the embodiment of the utility model;

[0024] Figure 4 is a sectional schematic structural view of the condenser of the embodiment of the utility model;

[0025] Figure 5 is a sectional schematic structural view of the condenser of the embodiment of the utility model;

[0026] Figure 6 is a partial schematic structural view of the condenser of the embodiment of the utility model;

[0027] Figure 7 is a partial schematic structural view of the condenser of the embodiment of the utility model;

[0028] Figure 8 is Figure 4A local enlarged schematic structural view at the middle A;

[0029] Figure 9 A local schematic structural view of the condenser of the embodiment of the utility model;

[0030] Figure 10 A local schematic structural view of the condenser of the embodiment of the utility model.

[0031] Reference signs:

[0032] Housing 100, chamber 110, annular flow guide cavity 111, first air inlet 112, bottom surface 113, side wall surface 114, bottom 120, cylinder body 130, first end cover 140, first tube plate 141, first cover body 142, first opening 143, first through hole 144, second end cover 150, second tube plate 151, second cover body 152, second opening 153, second through hole 154, air outlet pipe 200, second air inlet 210, air outlet 220, heat exchange pipe 300, liquid outlet pipe 400, liquid outlet portion 410, inlet end 420. DETAILED DESCRIPTION

[0033] The condenser of the embodiment of the utility model and the air conditioning unit with the same will be described below with reference to Figures 1 to 10 In the description of the embodiment, it should be understood that the terms "first" and "second" are used only for the purpose of description and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features, that is, one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. When a certain feature "includes or contains" a certain or certain features, unless otherwise specifically described, it indicates that other features and can further include other features are not excluded.

[0034] Unless otherwise specifically defined and limited, the terms "set", "installed", "connected", "connected", "fixed", "coupled" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. Those skilled in the art should be able to understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0035] In addition, in the description of the embodiments, the first feature being "on" or "under" the second feature can include the first and second features being in direct contact, or can include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of the embodiments, the first feature being "on", "above", and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is horizontally higher than the second feature. The first feature being "under", "below", or "underneath" the second feature can be the first feature being directly below or obliquely below the second feature, or merely means that the first feature is horizontally lower than the second feature.

[0036] In the description of the embodiments, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means 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 utility model. In the description, the exemplary description of the above terms does not necessarily mean 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.

[0037] The condenser of the embodiments of the utility model will be described below with reference to the drawings.

[0038] As shown in Figures 1-5 The condenser of the embodiments of the utility model includes a shell 100, an air outlet pipe 200, and a heat exchange pipe 300.

[0039] The shell 100 defines a chamber 110. The air outlet pipe 200 is arranged on the shell 100, a part of the air outlet pipe 200 is located in the shell 100 and communicates with the chamber 110, and another part of the air outlet pipe 200 is located outside the chamber 110 to communicate the chamber 110 with the outside through the air outlet pipe 200. The part of the air outlet pipe 200 located in the shell 100 forms an annular flow guide cavity 111 with the wall surface of the chamber 110, and the annular flow guide cavity 111 extends in the up-down direction.

[0040] The shell 100 is provided with a first gas inlet 112 communicated with the annular flow guide cavity 111, so as to make the gaseous refrigerant blown from the first gas inlet 112 flow along the circumference of the gas outlet pipe 200, that is, the gaseous refrigerant is blown into the annular flow guide cavity 111 through the first gas inlet 112, and the gaseous refrigerant is guided by the annular flow guide cavity 111 and flows along the circumference of the gas outlet pipe 200, and at the same time, the gaseous refrigerant is affected by gravity and flows downward, so that the gaseous refrigerant flows along the circumference of the gas outlet pipe 200 and downward. In the process of flowing of the gaseous refrigerant in the annular flow guide cavity 111, the oil droplets doped in the gaseous refrigerant are separated from the gaseous refrigerant due to the influence of centrifugal force, and the separated oil liquid flows to the bottom 120 of the cavity 110 and gathers into oil liquid under the influence of gravity.

[0041] The bottom 120 of the cavity 110 is provided with a liquid outlet 410, so that the separated oil liquid can be discharged from the cavity 110 through the liquid outlet 410. The inlet end 420 of the liquid outlet 410 is located above the bottom surface 113 of the cavity 110, that is, the oil liquid can gather to a certain height at the bottom 120 of the cavity 110 to flow into the inlet end 420, so that the doped solid impurities, such as welding slag, in the oil liquid are settled at the bottom 120 of the oil liquid and do not enter the inlet end 420 with the oil liquid, so that the oil liquid discharged by the liquid outlet 410 is more pure.

[0042] The heat exchange pipe 300 is arranged on the shell 100, and a part of the heat exchange pipe 300 is arranged in the annular flow guide cavity 111, so that the refrigerant in the heat exchange pipe 300 exchanges heat with the gaseous refrigerant in the annular flow guide cavity 111.

[0043] The working process of the condenser in the embodiment of the present application will be described below with reference to the drawings.

[0044] The high-temperature gaseous refrigerant enters the annular flow guide cavity 111 through the first gas inlet 112, and forms a cyclone flowing along the circumference of the gas outlet pipe 200 and downward in the annular flow guide cavity 111. The cyclone exchanges heat with the heat exchange pipe 300 in the annular flow guide cavity 111 to reduce the high-temperature gaseous refrigerant and form low-temperature gaseous refrigerant, and the cyclone separates the oil droplets in the gaseous refrigerant by the action of centrifugal force in the flowing process. The gaseous refrigerant after heat exchange and oil removal is discharged from the cavity 110 through the gas outlet pipe 200, the separated oil liquid flows downward, and finally is discharged from the liquid outlet 410 at the bottom 120 of the cavity 110.

[0045] The condenser of the embodiment of the utility model not only can make gaseous refrigerant and the refrigerant of heat exchange pipe 300 in annular flow guide cavity 111 exchange heat, but also in the heat exchange process of gaseoretant, gaseoretant flows in annular flow guide cavity 111 and forms cyclone, so as to separate oil in gaseoretant by centrifugal force generated when cyclone flows.Compared with related art, the condenser of the embodiment of the utility model can also separate oil in gaseoretant, so that air conditioning unit does not need to additionally set oil separation device, so as to save the space of setting oil separation device and reduce the overall size and manufacturing cost of air conditioning unit.

[0046] In addition, when the oil flows out through the inlet end 420 of the liquid outlet portion 410, the solid impurities located at the bottom of the oil 120 are not easy to be discharged through the inlet end 420 because the inlet end 420 of the liquid outlet portion 410 is higher than the bottom surface 113 of the chamber 110, so that the oil discharged from the liquid outlet portion 410 is more pure.

[0047] In some embodiments, as shown in Figure 4 and Figure 6 The liquid outlet portion 410 is arranged on the bottom surface 113 of the chamber 110, and the liquid outlet portion 410 protrudes upward, and the inlet end 420 of the liquid outlet portion 410 is arranged at the upper end of the liquid outlet portion 410. The opening of the inlet end 420 faces upward. After the oil droplets in the gaseous refrigerant are separated, the oil droplets flow downward under the action of gravity and gather into an oil layer on the bottom surface 113 of the chamber 110. Arranging the liquid outlet portion 410 at the bottom 120 of the chamber 110 can make the oil layer accumulate to a certain height, so that the oil layer flows into the liquid outlet portion 410 through the inlet end 420 of the liquid outlet portion 410 under the action of gravity. Moreover, because the inlet end 420 of the liquid outlet portion 410 opens upward, the oil around the inlet end 420 can uniformly enter the inlet end 420, avoiding that the solid impurities enter the inlet end 420 with the oil.

[0048] In other embodiments, the liquid outlet portion 410 is arranged at a position close to the bottom surface 113 of the side wall surface 114 of the chamber 110, the liquid outlet portion 410 protrudes upward and is arranged obliquely, and the inlet end 420 of the liquid outlet portion 410 is arranged at the upper end of the liquid outlet portion 410.

[0049] In some embodiments, the distance between the inlet end 420 of the liquid outlet 410 and the bottom surface 113 of the chamber 110 is 2mm-8mm. Optionally, the distance between the inlet end 420 of the liquid outlet 410 and the bottom surface 113 of the chamber 110 is 3mm-6mm. Optionally, the distance between the inlet end 420 of the liquid outlet 410 and the bottom surface 113 of the chamber 110 is 4mm-5mm. That is, the inlet end 420 of the liquid outlet 410 is 2mm-8mm higher than the bottom surface 113 of the chamber 110. On the one hand, this allows the oil to accumulate to a certain height at the bottom 120 of the chamber 110 before flowing into the inlet end 420, preventing solid impurities in the oil from entering the inlet end 420 with the oil, thus making the oil discharged from the liquid outlet 410 purer. On the other hand, it avoids the distance between the inlet end 420 and the bottom surface 113 of the chamber 110 being too large, which would cause excessive oil accumulation and excessively long oil discharge time.

[0050] The distance between the inlet end 420 of the liquid outlet 410 and the bottom surface 113 of the chamber 110 is, but is not limited to, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm or 8mm.

[0051] In some embodiments, the liquid outlet 410 is provided with a switching valve, which controls the inlet end 420 of the liquid outlet 410 to connect or disconnect with the outside, thereby controlling the liquid outlet 410 to discharge oil.

[0052] In some embodiments, such as Figure 9 As shown, the projection of the first air inlet 112 onto a plane perpendicular to its extension direction is located between the projection of the outlet pipe 200 onto the plane and the projection of the side wall 114 of the chamber 110. That is, the first air inlet 112 is horizontally positioned between the outlet pipe 200 and the side wall, so that when the gaseous refrigerant is blown into the annular guide cavity 111 from the first air inlet 112, it is located between the outlet pipe 200 and the side wall, making it easier for the gaseous refrigerant to form a cyclone flowing circumferentially along the outlet pipe 200.

[0053] For example Figure 9 As shown, the plane on which the projection of the first air inlet 112 lies is a cross-section that coincides with the central axis of the air outlet 200, and this cross-section is perpendicular to the extension direction of the first air inlet 112. The projection of the first air inlet 112 is located between the outline of the projection of the side wall surface 114 of the chamber 110 and the outline of the projection of the air outlet 200.

[0054] Further, the distance between the projection of the first gas inlet 112 and the profile of the projection of the gas outlet pipe 200 is greater than the distance between the projection of the first gas inlet 112 and the outer profile of the side wall surface 114 of the cavity 110, that is, the first gas inlet 112 is closer to the side wall surface 114 of the cavity 110 relative to the gas outlet pipe 200. The closer the first gas inlet 112 is to the side wall surface 114 of the cavity 110, the greater the centrifugal force generated by the cyclone when flowing, and the better the separation effect of the oil droplets in the gaseous refrigerant.

[0055] Preferably, the projection of the first gas inlet 112 on the plane is in contact with the projection of the side wall surface 114 of the cavity 110. That is, when the projection of the first gas inlet 112 on the plane is in contact with the projection of the side wall surface 114, it is the position of the first gas inlet 112 closest to the side wall surface 114, the centrifugal force generated by the cyclone when flowing reaches the maximum, and the separation effect of the oil droplets in the gaseous refrigerant is further improved.

[0056] For example, when the outer profile of the first gas inlet 112 is circular, the projection of the first gas inlet 112 on the plane is tangent to the projection of the side wall surface 114 of the cavity 110. For another example, when the outer profile of the first gas inlet 112 is rectangular, the outer profile of the projection close to the side wall surface 114 of the cavity 110 coincides with the side wall surface 114 of the cavity 110.

[0057] In some embodiments, the heat exchange pipe 300 is a plurality of heat exchange pipes 300, and the plurality of heat exchange pipes 300 are arranged at intervals in the circumferential direction of the gas outlet pipe 200. That is, a plurality of heat exchange pipes 300 are arranged in the cavity 110, and the plurality of heat exchange pipes 300 are all located on the outside of the gas outlet pipe 200, so that the refrigerant in the plurality of heat exchange pipes 300 can exchange heat with the gaseous refrigerant in the cavity 110, thereby greatly improving the heat exchange efficiency of the condenser of the embodiment of the present application.

[0058] Further, the plurality of heat exchange pipes 300 are arranged at intervals in the inner-outer direction, so as to further increase the number of heat exchange pipes 300 in the cavity 110, and make the plurality of heat exchange pipes 300 more evenly distributed, so that the refrigerant in the plurality of heat exchange pipes 300 can more evenly exchange heat with the gaseous refrigerant in the cavity 110, thereby further improving the heat exchange efficiency of the condenser of the embodiment of the present application.

[0059] In some embodiments, as Figure 3 and Figure 5As shown, each heat exchange tube 300 extends in the vertical direction and is located outside the outlet pipe 200. The gaseous refrigerant flows circumferentially along the outlet pipe 200 within the chamber 110 from top to bottom. By configuring each heat exchange tube 300 as a tube extending in the vertical direction, each heat exchange tube 300 can exchange heat with the gaseous refrigerant more uniformly in the vertical direction, thereby improving heat exchange efficiency.

[0060] In some embodiments, such as Figure 5 As shown, a portion of each heat exchange tube 300 in the annular guide cavity 111 extends spirally in the vertical direction, and this portion of each heat exchange tube 300 is arranged around the outside of the outlet pipe 200. This increases the length of the heat exchange tube 300 in the annular guide cavity 111, thereby prolonging the time required for the refrigerant to flow through this portion of the heat exchange tube 300. This increases the heat exchange time between the refrigerant in this portion of the heat exchange tube 300 and the gaseous refrigerant in the chamber 110, improving the heat exchange effect. Furthermore, the spiral shape of the heat exchange tube 300 can guide the gaseous refrigerant in the annular guide cavity 111, making it easier for the gaseous refrigerant to form a cyclone flowing along the outlet pipe 200.

[0061] Furthermore, the portion of each heat exchange tube 300 within the chamber 110 is arranged in a spiral shape, thereby further extending the heat exchange time between the refrigerant in each heat exchange tube 300 and the gaseous refrigerant within the chamber 110, thus further improving the heat exchange effect of the condenser in this embodiment of the present invention.

[0062] like Figures 4-7 The housing 100 shown includes a cylindrical body 130, and a first end cap 140 and a second end cap 150 respectively covering the upper and lower ends of the cylindrical body 130, with a chamber 110 defined between the cylindrical body 130, the first end cap 140 and the second end cap 150.

[0063] The first end cap 140 includes a first tube sheet 141 and a first cover body 142. The first cover body 142 is provided with a first opening 143 communicating with the outside. The first tube sheet 141 and the first cover body 142 define one of a manifold cavity and a branch cavity. The first tube sheet 141 is provided with a plurality of first through holes 144. The upper end of each heat exchange tube 300 is correspondingly inserted through the first through hole 144 so that each heat exchange tube 300 communicates with the manifold cavity and the branch cavity.

[0064] The second end cap 150 includes a second tube sheet 151 and a second cover body 152. The second cover body 152 is provided with a second opening 153 communicating with the outside. The second tube sheet 151 and the second cover body 152 define one of the manifold and the branching chamber. The second tube sheet 151 is provided with a plurality of second through holes 154. The lower end of each heat exchange tube 300 is correspondingly inserted through a second through hole 154 so that each heat exchange tube 300 communicates with the other of the manifold and the branching chamber.

[0065] For example, the first opening 143 is connected to the outlet pipe, and the second opening 153 is connected to the inlet pipe, thus defining a confluence cavity between the first tube sheet 141 and the first cover 142, and a diversion cavity between the second tube sheet 151 and the second cover 152. During condenser heat exchange in this embodiment, the water from the inlet pipe enters the diversion cavity through the second opening 153 and is diverted by multiple second through holes 154 on the second tube sheet 151 into multiple streams that flow into multiple heat exchange tubes 300. After heat exchange, the multiple streams flow to the upper end of the heat exchange tubes 300, converge in the confluence cavity, and then exit through the first opening 143 before entering the outlet pipe.

[0066] In other words, the upper and lower ends of each heat exchange tube 300 are connected to the first end cap 140 and the second end cap 150 respectively, so that the first end cap 140 and the second end cap 150 can respectively divide or merge the refrigerant, thereby facilitating the uniform distribution of the refrigerant into multiple heat exchange tubes 300 and the convergence and discharge of the refrigerant flowing out of multiple heat exchange tubes 300.

[0067] In some embodiments, such as Figure 3 As shown, the first tube sheet 141 is flat, and the upper ends of the plurality of heat exchange tubes 300 are flush with either the upper or lower surface of the first tube sheet 141. That is, the upper ends of the plurality of heat exchange tubes 300 are flush with either the upper or lower surface of the first tube sheet 141; or, the upper ends of the plurality of heat exchange tubes 300 are flush with either the lower or upper surface of the first tube sheet 141. The second tube sheet 151 is flat, and the lower ends of the plurality of heat exchange tubes 300 are flush with either the upper or lower surface of the second tube sheet 151. That is, the lower ends of the plurality of heat exchange tubes 300 are flush with either the upper or lower surface of the second tube sheet 151. The first tube sheet 141 and the second tube sheet 151 have simple structures, thereby reducing the manufacturing cost of the first tube sheet 141 and the second tube sheet 151. Moreover, the lengths of the multiple heat exchange tubes 300 installed on the first tube sheet 141 and the second tube sheet 151 are all the same, thereby reducing the difficulty of manufacturing and assembly.

[0068] In some embodiments, such as Figure 8As shown, the condenser of the embodiment of the utility model further includes a liquid outlet pipe 400, the liquid outlet pipe 400 passes through the second cover body 152 and the second tube plate 151 in turn and extends into the chamber 110, and a part of the liquid outlet pipe 400 extending into the chamber 110 forms a liquid outlet part 410. By arranging the liquid outlet pipe 400 on the second cover body 152 and the second tube plate 151, the oil liquid at the bottom 120 of the chamber 110 can be smoothly discharged, and the structure is simple and easy to manufacture.

[0069] In some embodiments, as Figures 1-5 As shown, the gas outlet pipe 200 extends into the chamber 110 through the first cover body 142 and the first tube plate 141 in turn, and the upper end of the gas outlet pipe 200 is provided with a gas outlet 220 to facilitate the gaseous refrigerant to be discharged through the gas outlet pipe 200. A part of the gas outlet pipe 200 located in the chamber 110 is provided with a second gas inlet 210, and the second gas inlet 210 is located below the first gas inlet 112.

[0070] Optionally, the distance between the second gas inlet 210 and the bottom surface 113 of the chamber 110 is 200mm-300mm. Optionally, the distance between the second gas inlet 210 and the bottom surface 113 of the chamber 110 is 220mm-280mm. Optionally, the distance between the second gas inlet 210 and the bottom surface 113 of the chamber 110 is 240mm-360mm. The second gas inlet 210 is spaced apart from the bottom surface 113 of the chamber 110 to avoid the second gas inlet 210 being too close to the bottom surface 113 of the chamber 110, so that the low-temperature gaseous refrigerant after heat exchange does not come into contact with the oil liquid at the bottom surface 113 of the chamber 110 when entering the second gas inlet 210, thereby ensuring the purity of the discharged refrigerant.

[0071] The air conditioning unit of the utility model includes condenser and compressor, wherein, the condenser is the condenser described in any one of the above embodiments. The compressor has a refrigerant outlet, and the refrigerant outlet is communicated with the first gas inlet 112 of the condenser.

[0072] The condenser of the air conditioning unit of the utility model can also separate the oil liquid in the gaseous refrigerant, so that the air conditioning unit does not need to additionally set an oil separation device, thereby saving the space for setting the oil separation device and reducing the overall size and manufacturing cost of the air conditioning unit.

[0073] At this point, those skilled in the art should realize that, although the plurality of exemplary embodiments of the utility model have been shown and described in detail herein, many other variants or modifications conforming to the principles of the utility model can be directly determined or deduced according to the content disclosed by the utility model without departing from the spirit and scope of the utility model. Therefore, the scope of the utility model should be understood and recognized as covering all these other variants or modifications.

Claims

1. A condenser characterized by, The condenser comprises: a shell defining a chamber; an outlet pipe penetrating the shell, a portion of the outlet pipe being located in the chamber and communicating with the chamber, and a portion of the outlet pipe forming an annular flow guide cavity extending in the up-down direction with the wall surface of the chamber; the shell is provided with a first gas inlet communicating with the annular flow guide cavity to facilitate the gaseous refrigerant blown from the first gas inlet to flow along the circumference of the outlet pipe; the bottom of the chamber is provided with a liquid outlet portion, and the inlet end of the liquid outlet portion is located above the bottom surface of the chamber; a heat exchange pipe penetrating the shell, and a portion of the heat exchange pipe being located in the annular flow guide cavity.

2. The condenser according to claim 1, wherein the liquid outlet portion is provided on the bottom surface of the chamber, and the opening of the inlet end faces upward.

3. The condenser according to claim 1, wherein a projection of the first gas inlet on a plane perpendicular to the extending direction of the first gas inlet is located between the projection of the outlet pipe on the plane and the projection of the side wall surface of the chamber; the projection of the first gas inlet on the plane is in contact with the projection of the side wall surface of the chamber.

4. The condenser according to claim 1, wherein the heat exchange pipes are multiple, and the multiple heat exchange pipes are arranged at intervals in the circumferential direction of the outlet pipe.

5. The condenser according to claim 4, wherein the portion of each heat exchange pipe extends in the up-down direction in a spiral shape, and the portion of each heat exchange pipe is arranged around the outside of the outlet pipe; or each heat exchange pipe extends in the up-down direction, and each heat exchange pipe is arranged outside the outlet pipe.

6. The condenser according to claim 1, wherein the shell comprises a cylinder body, and a first end cover and a second end cover respectively covering the upper end and the lower end of the cylinder body, the cylinder body, the first end cover and the second end cover defining the chamber therebetween; the first end cover comprises a first tube plate and a first cover body, the first cover body is provided with a first opening communicating with the outside, one of a flow collection cavity and a flow distribution cavity is defined between the first tube plate and the first cover body, the first tube plate is provided with multiple first through holes, and the upper end of each heat exchange pipe penetrates the first through hole one by one to communicate with the one of the flow collection cavity and the flow distribution cavity; the second end cover comprises a second tube plate and a second cover body, the second cover body is provided with a second opening communicating with the outside, the other of the flow collection cavity and the flow distribution cavity is defined between the second tube plate and the second cover body, the second tube plate is provided with multiple second through holes, and the lower end of each heat exchange pipe penetrates the second through hole one by one to communicate with the other of the flow collection cavity and the flow distribution cavity.

7. The condenser according to claim 6, wherein ​ The first tube plate is flat, and the upper ends of the plurality of heat exchange tubes are flush with the upper surface or the lower surface of the first tube plate; the second tube plate is flat, and the lower ends of the plurality of heat exchange tubes are flush with the upper surface or the lower surface of the second tube plate.

8. The condenser of claim 6, wherein, Also comprising: The liquid outlet pipe sequentially passes through the second cover body and the second tube plate and extends into the chamber, and a portion of the liquid outlet pipe extending into the chamber forms the liquid outlet portion; The distance between the inlet end of the liquid outlet portion and the bottom surface of the chamber is 2mm-8mm.

9. The condenser of claim 1, wherein, The portion of the gas outlet pipe is provided with a second gas inlet, and the second gas inlet is located below the first gas inlet, and the distance between the second gas inlet and the bottom surface of the chamber is 200mm-300mm.

10. An air conditioning unit characterized by, The condenser of any one of claims 1-9.

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