Condenser with built-in oil separation structure

Abstract

This application provides a condenser with an internal oil separation structure. The condenser includes a shell and the oil separation structure. The shell includes sections in the length, width, and height directions defining a cavity, and has at least one inlet pipe for receiving refrigerant containing lubricating oil to be condensed. The oil separation structure is fixed in the cavity and includes a separation chamber for separating the lubricating oil and refrigerant gas in the refrigerant. At least one inlet pipe extends into the separation chamber. The cavity includes first and second condensing chambers separated by the oil separation structure and located on both sides of the separation chamber in the width direction of the shell, respectively, extending along the length direction of the shell. The upper part of the oil separation structure has first and second exhaust ports that respectively connect the first and second condensing chambers to the separation chamber in fluid communication, so that the refrigerant gas separated by the separation chamber can enter the first and second condensing chambers for condensation, and the bottom of the oil separation structure has at least one oil drain port so that the lubricating oil separated by the separation chamber can be discharged from the separation chamber.

Description

Technical Field

[0001] This application relates to a condenser, and more particularly to a condenser with an internal oil separation structure. Background Technology

[0002] Air conditioning systems include condensers, which condense the high-temperature, high-pressure gaseous refrigerant discharged from the compressor into a medium-temperature, high-pressure liquid refrigerant. In screw compressors, lubricating oil is needed between the rotors to reduce compressor noise. This lubricating oil also reduces gas leakage during rotor meshing, improving compressor performance. Therefore, during actual operation, the gas discharged from a screw compressor includes not only the gaseous refrigerant but also refrigerant oil droplets. If too much lubricating oil enters the condenser and evaporator, it will not only cause insufficient oil supply to the oil supply system, increasing the risk of damage to moving parts of the compressor, but also cause excessive lubricating oil to adhere to the heat exchange tubes in a thin film, resulting in the entire air conditioning system failing to achieve its designed heat exchange efficiency. Therefore, an oil separator is needed to separate the gaseous refrigerant and oil discharged from the compressor. The separated oil is returned to the compressor oil tank for use by the compressor. Summary of the Invention

[0003] This application provides a condenser including a built-in oil separation structure. The built-in oil separation structure in the condenser provides excellent oil separation, and the condenser provides excellent heat exchange efficiency.

[0004] According to one aspect of this application, a condenser with an internal oil separation structure is provided. The condenser includes a housing and the oil separation structure. The housing defines a cavity and has at least one inlet pipe for receiving refrigerant containing lubricating oil to be condensed. The housing includes a length direction, a height direction, and a width direction. The oil separation structure is fixed in the cavity and includes a separation chamber. The at least one inlet pipe extends into the separation chamber, wherein the separation chamber is configured to separate the lubricating oil and refrigerant gas in the refrigerant. The cavity includes a first condensation chamber and a second condensation chamber separated by the oil separation structure. The first condensation chamber and the second condensation chamber are located on opposite sides of the separation chamber in the width direction of the housing and extend along the length direction of the housing. The oil separation structure has a first exhaust port and a second exhaust port at the top, which respectively connect the first condensing chamber and the second condensing chamber to the separation chamber, so that the refrigerant gas separated by the separation chamber can enter the first condensing chamber and the second condensing chamber for condensation. The oil separation structure also has at least one oil drain port at the bottom, so that the lubricating oil separated by the separation chamber can be discharged from the separation chamber.

[0005] In the condenser with an internal oil separation structure as described above, the separation chamber is centrally located in the cavity along the width direction of the shell.

[0006] In the condenser with an internal oil separation structure as described above, the oil separation structure includes a plurality of vertical separation plates spaced apart along the length of the shell in the separation chamber, each of the plurality of vertical separation plates being arranged transversely to the extension direction of the separation chamber. At least a portion of the plurality of vertical separation plates are configured to block the upper fluid passage in the separation chamber, and at least another portion of the plurality of vertical separation plates are configured to block the lower fluid passage in the separation chamber.

[0007] In the condenser with an internal oil separation structure as described above, on one side of the first exhaust port and the second exhaust port, at least a portion of the vertical separation plates that block the upper fluid passage in the separation chamber and at least another portion of the vertical separation plates that block the lower fluid passage in the separation chamber are alternately arranged.

[0008] In the condenser with an internal oil separation structure as described above, the at least one inlet pipe is centrally located at the top of the housing in the width direction of the housing.

[0009] In the condenser with an internal oil separation structure as described above, the portion of the at least one inlet pipe extending into the separation chamber extends along the height direction of the housing. The oil separation structure also includes a transverse separation plate located below the at least one inlet pipe.

[0010] In the condenser with an internal oil separation structure as described above, the portion of the at least one inlet pipe extending into the separation chamber is bent into a bent shape in a direction away from the first exhaust port and the second exhaust port.

[0011] In the condenser with an internal oil separation structure as described above, the separation chamber extends along the length of the shell, and the cross-section of the separation chamber, which is parallel to the plane formed by the height and width directions of the shell, is generally funnel-shaped, so that the separation chamber has an opening and a handle, and the width of the handle is designed to be slightly larger than the diameter d of the at least one inlet pipe.

[0012] In the condenser with an internal oil separation structure as described above, the oil separation structure includes a housing that defines the separation chamber. The housing includes opposing sidewalls, opposing endwalls, and opposing top and bottom walls connected to each other. The top wall abuts against the top inner surface of the housing, and the upper portions of the opposing sidewalls are respectively provided with a first exhaust port and a second exhaust port. At least a portion of the vertical separation plate that blocks the upper fluid passage in the separation chamber extends from the top wall for at least a portion of the height of the separation chamber, and at least another portion of the vertical separation plate that blocks the lower fluid passage in the separation chamber extends from the bottom of the oil separation structure for at least a portion of the height of the separation chamber.

[0013] In the condenser with an internal oil separation structure as described above, the oil separation structure includes a housing that defines the separation chamber. The housing includes opposing sidewalls, opposing endwalls, and a bottom wall connected to each other. The tops of the opposing sidewalls and the opposing endwalls abut against the top inner surface of the housing, and the upper portions of the opposing sidewalls are respectively provided with a first exhaust port and a second exhaust port.

[0014] In the condenser with an internal oil separation structure as described above, at least another portion of the vertical separation plate that blocks the lower fluid passage in the separation chamber is spaced a certain distance from the bottom wall to define the oil guide channel.

[0015] In the condenser with an internal oil separation structure as described above, the bottom wall of the oil separation structure abuts against the bottom inner surface of the housing, and at least one oil drain port is disposed on the bottom wall. The condenser includes a first subcooling box and a second subcooling box located at the bottom of the cavity, and the first subcooling box and the second subcooling box are respectively located on both sides of the oil separation structure in the width direction of the housing.

[0016] In the condenser with an internal oil separation structure as described above, the condenser includes a subcooling box disposed at the bottom of the cavity, and the bottom wall of the oil separation structure abuts against the subcooling box. The oil separation structure also includes at least one oil storage chamber disposed at the bottom of the oil separation structure and communicating with the bottom of the separation chamber, and at least one oil drain port is disposed at the bottom of the corresponding at least one oil storage chamber. The at least one oil storage chamber is housed at the bottom of one of the first condensing chamber and the second condensing chamber.

[0017] According to another aspect of this application, this application provides a refrigeration and air conditioning system, the refrigeration and air conditioning system including a condenser with an internal oil separation structure according to this application. Attached Figure Description

[0018] Figure 1a This is a cross-sectional view of a condenser according to an embodiment of this application.

[0019] Figure 1b yes Figure 1a The diagram shows a cross-sectional view of the condenser along the AA direction.

[0020] Figure 1c Show Figure 1b The outer casing of the oil separation structure in the condenser shown.

[0021] Figure 2a This is a cross-sectional view of a condenser according to another embodiment of this application.

[0022] Figure 2b yes Figure 2a The condenser shown is a cross-sectional view along the BB direction.

[0023] Figure 3a This is a cross-sectional view of a condenser according to yet another embodiment of this application.

[0024] Figure 3b yes Figure 3a The condenser shown is a cross-sectional view along the CC direction. Detailed Implementation

[0025] Various specific embodiments of this application will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that, where possible, the same or similar reference numerals used in this application refer to the same parts. Although terms indicating direction, such as "upper," "lower," "left," "right," "top," and "bottom," are used in this application to describe various exemplary structural parts and elements, their use herein is merely for illustrative purposes and is based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating direction are illustrative only and should not be considered limiting.

[0026] Figures 1a-1c A condenser 10a according to one embodiment of this application is shown. Figure 1a This is a cross-sectional view of a condenser 10a according to an embodiment of this application. Figure 1b yes Figure 1a The condenser 10a shown is a cross-sectional view along the AA direction. Figure 1c Show Figure 1b The outer shell 202a of the oil separation structure 201a in the condenser 10a shown.

[0027] like Figure 1a and Figure 1b As shown, the condenser 10a includes a housing 101, and the housing 101 includes, as shown in the figure, a housing 101. Figure 1aThe length, width, and height directions are shown. The housing 101 defines a cavity 102, in which the oil separation structure 201a is fixed and extends along the length of the housing 101. Figure 1a In this process, the oil separation structure 201a extends the length of the cavity 102. The oil separation structure 201a includes a separation chamber 203a.

[0028] like Figure 1b As shown, the cavity 102 includes a first condensing chamber 104a and a second condensing chamber 105a separated by an oil separation structure 201a. The first condensing chamber 104a and the second condensing chamber 105a are located on both sides of the separation chamber 203a in the width direction of the shell 101, and respectively extend the length of the cavity 102. Several condensing tubes 106 are respectively provided in the first condensing chamber 104a and the second condensing chamber 105a for receiving cooling fluid. As will be discussed in detail below, the refrigerant gas entering the first condensing chamber 104a and the second condensing chamber 105a from the separation chamber 203a exchanges heat with the cooling fluid in the condensing tubes 106, thereby cooling the refrigerant gas into liquid refrigerant. Figure 1b In the illustrated embodiment, the separation chamber 203a is centrally arranged in the cavity 102 along the width direction of the housing 101. In some embodiments, the separation chamber 203a is not centrally arranged in the cavity 102 along the width direction of the housing 101.

[0029] The cavity 102 also includes subcooling boxes 107.1 and 107.2 for further cooling the refrigerant that has been cooled by the cooling fluid in the condenser tube 106. The cooled refrigerant is then sent to the throttle valve of the refrigeration and air conditioning system. Subcooling boxes 107.1 and 107.2 are located on both sides of the oil separation structure 201a and are respectively housed in the lower part of the first condensing chamber 104a and the second condensing chamber 105a. This split-type subcooling box construction allows the oil separation structure 201a to abut against the bottom inner surface of the housing 101 of the condenser 10a (described in detail below), thereby extending the separation chamber 203a to the entire height of the housing 101. This allows for maximum flight altitude for the refrigerant entering the separation chamber 203a, thereby increasing the refrigerant's flight time in the separation chamber 203a to improve gravity separation, which in turn facilitates the complete separation of lubricating oil. This also allows the separation chamber 203a to be designed with a smaller width, giving the two condensing chambers (first condensing chamber 104a and second condensing chamber 105a) more space to accommodate more condensing tubes 106, thereby providing the heat exchange capacity of the condenser 10a.

[0030] The housing 101 has two inlet pipes 301a near its two ends, connecting to a compressor (not shown in the figure), for receiving refrigerant (hereinafter referred to as "refrigerant") containing liquid lubricating oil from the compressor. The inlet pipes 301a extend into the separation chamber 203a, thereby sending the refrigerant received from the compressor into the separation chamber 203a to separate the liquid lubricating oil and refrigerant gas in the refrigerant. Figure 1a As shown, the portion of the inlet pipe 301a extending into the separation chamber 203a is bent into a bent tube shape, such that the outlets 303a of the inlet pipe 301a face towards both ends of the oil separation structure 201a. In some embodiments, such as Figure 1b As shown, both inlet pipes 301a are centrally arranged at the top of the housing 101 in the width direction. In some embodiments, the inlet pipes 301a may also be non-centrally arranged at the top of the housing 101 in the width direction. Although Figure 1a The diagram shows two inlet pipes; it should be understood that in other embodiments, different numbers of inlet pipes 301a may be provided. As an example, the number of inlet pipes 301a is one.

[0031] Combination Figures 1a-1c Describe the structure of oil separation structure 201a. For example... Figures 1a-1c As shown, the oil separation structure 201a includes a housing 202a, which defines a separation chamber 203a. The housing 202a includes opposing side walls 204 and 205, opposing end walls 206 and 207, and opposing top wall 208 and bottom wall 209a, which are connected to each other to form the housing 202a.

[0032] like Figure 1a and 1b As shown, the upper portions of the opposite sidewalls 204 and 205 are respectively provided with a first exhaust port 210.1 and a second exhaust port 210.2. The first exhaust port 210.1 communicates with the first condensing chamber 104a, and the second exhaust port 210.2 communicates with the second condensing chamber 105a. Thus, the refrigerant gas separated by the separation chamber 203a enters the first condensing chamber 104a and the second condensing chamber 105a through the first exhaust port 210.1 and the second exhaust port 210.2 respectively for condensation. The two inlet pipes 301a are bent away from the first exhaust port 210.1 and the second exhaust port 210.2, so that the outlets 303a of the two inlet pipes 301a face towards one of the corresponding end walls 206 and 207 of the oil separation structure 201a. Figures 1a-1cIn some embodiments, the first exhaust port 210.1 and the second exhaust port 210.2 are disposed opposite each other on the upper middle of opposite sidewalls 204 and 205. In some embodiments with only one inlet pipe 301a, the inlet pipe 301a is disposed near the end wall 206 or 207 facing its outlet 303a, while the first exhaust port 210.1 and the second exhaust port 210.2 are disposed opposite each other on the upper part of opposite sidewalls 204 and 205 near the other of end walls 206 and 207, so that the outlet 303a of the inlet pipe 301a is as far away from the first exhaust port 210.1 and the second exhaust port 210.2 as possible, so that the refrigerant has sufficient flight distance in the separation chamber 203a to achieve separation of the lubricating oil.

[0033] Figure 1c As shown, an oil drain port 214a is provided on the bottom wall 209a. Although not shown in the figure, it should be understood that the corresponding position of the housing 101 of the condenser 10a has an outlet corresponding to the oil drain port 214a, so that the lubricating oil separated by the separation chamber 203a can be discharged through the oil drain port 214a. In different embodiments, the number of oil drain ports 214a may be different; for example, the number of oil drain ports 214a may be one, two, or more.

[0034] like Figure 1b and Figure 1c As shown, the cross-section of the separation chamber 203a, parallel to the plane formed by the height and width of the shell 101, is generally funnel-shaped, giving the separation chamber 203a an opening 221a and a handle 222a. The width W1 of the handle 222a is designed to be slightly larger than the diameter d of the inlet pipe 301a, which facilitates refrigerant entry into the separation chamber 203a while minimizing the width of the handle 222a. The minimal width of the handle 222a allows for a fast refrigerant flow rate within it, which is beneficial for the impact separation and centrifugal separation of the lubricating oil (discussed in detail below). The small width of the handle 222a also allows the cavity 102 to provide more space for condensation. Figure 1b As shown, because the handle 222a can have a very small width, most of the space in the cavity 102 is occupied by the first condensing chamber 104a and the second condensing chamber 105a. Therefore, a large number of condensing tubes can be installed in the first condensing chamber 104a and the second condensing chamber 105a to improve the heat exchange capacity of the condenser 10a. The opening 221a gradually widens upwards from the handle 222a, thus having a width that gradually increases upwards from the handle 222a. This reduces the refrigerant flow velocity in the opening 221a, thereby increasing the refrigerant's flight time in the separation chamber 203a, improving the gravity separation effect, and facilitating the complete separation of lubricating oil. Figure 1a and Figure 1bAs shown, a filter screen 241 is provided below the locations of the first exhaust port 210.1 and the second exhaust port 210.2 in the opening 221a to further separate the lubricating oil in the refrigerant before the refrigerant leaves the separation chamber 203a and enters the first condensing chamber 104a and the second condensing chamber 105a. The design of the opening 221a gradually opening upward from the handle 222a reduces the flow rate of the refrigerant when passing through the filter screen 241, allowing the filter screen 241 to better capture and separate the lubricating oil in the refrigerant. In some embodiments, the opening 221a does not have a filter screen 241.

[0035] like Figure 1a and 1b As shown, the bottom wall 209a of the oil separator 201a abuts against the bottom inner surface of the housing 101, and the top wall 208 abuts against the top inner surface of the housing 101, thereby fixing the oil separator 201a in the cavity 102. The structure of the oil separator 201a makes it easy to manufacture and convenient to fix into the cavity 102. In some embodiments, the oil separator 201a is obtained by bending and / or connecting suitable materials. The manufactured oil separator 201a is pushed into the cavity 102 of the condenser 10a and easily fixed in the cavity 102 by abutting against the bottom and top inner surfaces of the housing 101 of the condenser 10a. In some embodiments, the oil separator 201a is constructed without the top wall 208. In this embodiment, the side walls 204 and 205 and the end walls 206 and 207 of the oil separator 201a are directly connected to the top inner surface of the housing 101.

[0036] Vertical separation plates 211 and 212 are installed in the separation chamber 203a to obstruct the flow of refrigerant within the chamber, thereby facilitating the separation of lubricating oil from the refrigerant. Combined with... Figure 1a and Figure 1b The arrangement of vertical separation plates 211 and 212 is explained. Vertical separation plates 211 and 212 are each arranged transversely to the extension direction of the separation chamber 203a, and respectively abut against the opposite side walls 204 and 205 of the oil separation structure 201a. Vertical separation plate 211 extends downwards from the top wall 208 of the oil separation structure 201a, covering a portion of the height of the separation chamber 203a, to block the upper fluid passage in the separation chamber 203a. Vertical separation plate 212 extends upwards from the bottom of the oil separation structure 201a, covering a portion of the height of the separation chamber 203a, to block the lower fluid passage in the separation chamber 203a. Figure 1aAs shown, vertical separation plates 211 and 212 are alternately arranged along the length of the housing 101 on one side of the locations of the first exhaust port 210.1 and the second exhaust port 210.2. The distance between the vertical separation plates 211 and 212 along the length of the housing 101 and the distance between the vertical separation plate 211 and the end wall 206 or 207 of the oil separation structure 201a are designed to achieve the desired oil separation effect. In some embodiments, the sum of the heights of the vertical separation plates 211 and 212 is less than the height of the separation chamber 203a. In other embodiments, the sum of the heights of the vertical separation plates 211 and 212 is equal to the height of the separation chamber 203a. In still other embodiments, the sum of the heights of the vertical separation plates 211 and 212 is greater than the height of the separation chamber 203a.

[0037] like Figure 1b As shown in Figures 1a-1c In one embodiment, a certain distance is spaced between the vertical separation plate 212 and the bottom wall 209a of the oil separation structure 201a, thereby defining an oil guiding channel 219a between the vertical separation plate 212 and the bottom wall 209a of the oil separation structure 201a. The oil guiding channel 219a connects to the oil drain port 214a. The lubricating oil separated in the separation chamber 203a falls into the oil guiding channel 219a and flows to the oil drain port 214a, where it flows out and returns to the compressor. The oil guiding channel 219a allows only one oil drain port 214a to be provided on the bottom wall 209a of the oil separation structure 201a. In some embodiments, the vertical separation plate 212 extends upward from the bottom wall 209a of the oil separation structure 201a, thus eliminating the need for an oil guiding channel 219a. Thus, in these embodiments, a plurality of oil drain ports 214a are provided on the bottom wall 209a of the oil separation structure 201a, respectively distributed between the vertical separation plates 212 and between the vertical separation plates 212 and the end walls 206 or 207 of the oil separation structure 201a.

[0038] like Figure 1a As shown, in Figures 1a-1c In one embodiment, a vertical separation plate 211 and a vertical separation plate 212 are respectively provided on one side of the location of the first exhaust port 210.1 and the second exhaust port 210.2. The vertical separation plate 211 is close to the inlet pipe 301a and is located on the side of the inlet pipe 301a opposite to the outlet 303a. The vertical separation plate 212 is located between the vertical separation plate 211 and the locations of the first exhaust port 210.1 and the second exhaust port 210.2 in the length direction of the housing 101. In other embodiments, different numbers of vertical separation plates 211 and 212 are provided in the separation chamber 203a.

[0039] The following is combined Figure 1a Explanation from the location Figure 1aThe process shown is the separation of lubricating oil and refrigerant gas from the refrigerant entering the oil separation chamber 203a through the inlet pipe 301a on the right. It should be understood that the process involves separating lubricating oil and refrigerant gas from the refrigerant in the oil separation chamber 203a. Figure 1a The process of separating lubricating oil and refrigerant gas in the refrigerant entering the separation chamber 203a through the inlet pipe 301a on the left side is similar.

[0040] like Figure 1aAs shown, after the refrigerant is discharged from the outlet 303a of the inlet pipe 301a, it flows toward the end wall 207 of the oil separation structure 201a and impacts the end wall 207. Through this impact, some of the lubricating oil in the refrigerant is separated, and the separated lubricating oil drips into the oil guide channel 219a at the bottom of the separation chamber 203a. The remaining refrigerant, as the first impact-separated refrigerant, bounces back after impacting the end wall 207, and a portion of the first impact-separated refrigerant flows toward the vertical separation plate 211, while another portion flows toward the vertical separation plate 212. The portion of the first impact-separated refrigerant flowing toward the vertical separation plate 211 impacts the vertical separation plate 211, causing some of the lubricating oil in this portion of the first impact-separated refrigerant to be separated and drip into the oil guide channel 219a. The remaining refrigerant, as the second impact-separated refrigerant, continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2. Because the flow of refrigerant after the second impact separation is blocked by the vertical separation plate 211, the refrigerant changes its flow direction to bypass the obstruction of the vertical separation plate 211. This change in the direction of movement causes the refrigerant after the second impact separation to rotate around the vertical separation plate 211. The centrifugal force generated by the rotation further causes the lubricating oil in the refrigerant after the second impact separation to be centrifugally separated, thus dripping into the oil guide channel 219a. The remaining refrigerant, as the refrigerant after the first centrifugal separation, continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2, and enters the first condensing chamber 104a and the second condensing chamber 105a through the first exhaust port 210.1 and the second exhaust port 210.2, respectively. The portion of refrigerant flowing toward the vertical separation plate 212 after the first impact separation impacts the vertical separation plate 212. This impact causes some of the lubricating oil in this portion of the refrigerant after the first impact separation to be separated and drip into the oil guide channel 219a. The remaining refrigerant, as the refrigerant after the third impact separation, continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2. Because the flow of refrigerant after the third impact separation is blocked by the vertical separation plate 212, the refrigerant changes its flow direction to bypass the obstruction of the vertical separation plate 212. This change in the direction of movement causes the refrigerant after the third impact separation to rotate around the vertical separation plate 212 during its flow. The centrifugal force generated by the rotation further causes the lubricating oil in the refrigerant after the third impact separation to be centrifugally separated, thus dripping into the oil guide channel 219a. The remaining refrigerant, as the refrigerant after the second centrifugal separation, continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2, and enters the first condensing chamber 104a and the second condensing chamber 105a through the first exhaust port 210.1 and the second exhaust port 210.2, respectively.Furthermore, since the separation chamber 203a according to this application provides sufficient flight altitude for the refrigerant, during the flight process of the refrigerant from the outlet 303a of the inlet pipe 301a into the separation chamber 203a to leaving the separation chamber 203a, the lubricating oil in the refrigerant also separates from the refrigerant gas due to gravity, and the lubricating oil after gravity separation also falls into the oil guide channel 219a. The lubricating oil dripping into the oil guide channel 219a is discharged through the oil drain port 214a to return to the compressor. In some embodiments, when the vertical separation plates 211 on both sides of the first exhaust port 210.1 and the second exhaust port 210.2 are close together, the refrigerant reaching below the first exhaust port 210.1 and the second exhaust port 210.2 generates a vortex between the two vertical separation plates 211, and the centrifugal force generated by the vortex further causes some of the lubricating oil to be separated and fall into the oil guide channel 219a. As described above, in the separation chamber 203a, the lubricating oil and refrigerant gas in the refrigerant undergo impact separation, centrifugal separation, and gravity separation. The simultaneous existence of these multiple separation methods enables this application to provide sufficient oil separation for the refrigerant.

[0041] Figures 2a-2b A condenser 10b according to another embodiment of this application is shown. Figure 2a This is a cross-sectional view of a condenser 10b according to another embodiment of this application. Figure 2b yes Figure 2a The condenser 10b shown is a cross-sectional view along the BB direction.

[0042] Figures 2a-2b The condenser 10b of the illustrated embodiment and Figures 1a-1c The condenser 10a of the illustrated embodiment is similar, except for the change in the oil separation structure and the resulting changes in the first and second condensing chambers, as well as the different arrangement of the vertical separation plates. For the sake of brevity, only the differences between condenser 10b and condenser 10a will be described below.

[0043] like Figure 2a and Figure 2bAs shown, the condenser 10b has an oil separation structure 201b within its cavity, which includes a separation chamber 203b. Unlike the oil separation structure 201a, the oil separation structure 201b does not have a top wall; therefore, its opposing side walls and opposing end walls are directly connected to the inner surface of the condenser 10b's housing. It should be understood that in some embodiments, the oil separation structure 201b is also designed to have a top wall 208. An integrated subcooling box 107 is provided at the bottom of the condenser 10b's cavity, and the bottom wall 209b of the oil separation structure 201b abuts against the subcooling box 107. Therefore, the height of the separation chamber 203b is less than the height of the separation chamber 203a. The handle of the separation chamber 203b has a width W2. Considering the reduced refrigerant flight altitude and consequently shorter flight time in separation chamber 203b due to its smaller height compared to separation chamber 203a, the width W2 of the handle of separation chamber 203b is designed to be slightly larger than the width W1 of the handle of separation chamber 203a. This slightly reduces the refrigerant's flight speed in separation chamber 203b, thereby increasing the refrigerant's flight time and reducing pressure loss during flight. The increased flight time provides a gravitational separation effect for the refrigerant in separation chamber 203b, while the reduced pressure loss facilitates impact and centrifugal separation, thus promoting thorough separation of the lubricating oil. The bottom of the oil separation structure 201b is provided with an oil storage chamber 215, which is housed within the second condensation chamber 105b. The oil storage chamber 215 communicates with the oil guide channel 219b at the bottom of the oil separation structure 201b to collect the separated lubricating oil from separation chamber 203b. The bottom of the oil storage chamber 215 is provided with an oil drain port 214b to discharge the lubricating oil collected in the oil storage chamber 215 to the compressor. Since the oil storage chamber 215 occupies part of the space of the second condensing chamber 105b, the amount of refrigerant charged can be reduced in the refrigeration and air conditioning system using the oil separation structure 201b according to this embodiment.

[0044] compared to Figures 1a-1c In the embodiments, Figures 2a-2b In one embodiment, a vertical separation plate 213 is added on the side near the location of the first exhaust port 210.1 and the second exhaust port 210.2. The vertical separation plate 213 has a similar arrangement to the vertical separation plate 211. Figure 2aAs shown, on one side of the location of the first exhaust port 210.1 and the second exhaust port 210.2, two vertical separation plates 211 and 213 are provided to block the upper fluid passage in the separation chamber 203b, and a vertical separation plate 212 is provided to block the lower fluid passage in the separation chamber 203b. Vertical separation plate 211 is close to the inlet pipe 301a and located on the side opposite to the outlet 303a of the inlet pipe 301a. Vertical separation plate 213 is close to the location of the first exhaust port 210.1 and the second exhaust port 210.2. Vertical separation plate 212 is located between vertical separation plates 211 and 213 along the length of the condenser shell. It should be understood that, due to... Figures 2a-2b In the embodiment, the oil separation structure 201b has no top wall. Figures 2a-2b In the embodiments described, the vertical separation plates 211 and 213 extend downward from the inner surface of the top of the condenser 10b housing. It should be understood that in other embodiments, a different number of vertical separation plates 211 and 212 are provided in the separation chamber 203b.

[0045] The refrigerant separation process in separation chamber 203b is similar to that in separation chamber 203a. Specifically, as in separation chamber 203a, the refrigerant entering separation chamber 203b, after passing through vertical separation plates 211 and 212, becomes first centrifugally separated refrigerant and second centrifugally separated refrigerant. Unlike separation chamber 203a, separation chamber 203b adds vertical separation plates 213 near the first exhaust port 210.1 and the second exhaust port 210.2. Before reaching the first exhaust port 210.1 and the second exhaust port 210.2, the first and second centrifugally separated refrigerants are further separated by the obstruction of the vertical separation plates 213. Specifically, the first and second centrifugally separated refrigerants flow towards and impact the vertical separation plates 213. The lubricating oil separated by impact drips into the oil guide channel 219b, while the remaining refrigerant, as the refrigerant after the fourth impact separation, continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2. Because the flow of the refrigerant after the fourth impact separation is blocked by the vertical separation plate 213, the refrigerant changes its flow direction to bypass the obstruction. This change in direction causes the refrigerant to rotate around the vertical separation plate 213 during its flow. The centrifugal force generated by this rotation further causes the lubricating oil in the refrigerant to be centrifugally separated, thus dripping into the oil guide channel 219b. The remaining refrigerant, as the refrigerant after the third centrifugal separation, continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2. Since vertical separation plates 213 are provided on both sides of the first exhaust port 210.1 and the second exhaust port 210.2, close to these two exhaust ports, the refrigerant after the third centrifugal separation forms a vortex below the locations of the first exhaust port 210.1 and the second exhaust port 210.2 under the action of the two closely spaced vertical separation plates 213. Based on the centrifugal force generated by the vortex, some of the lubricating oil in the refrigerant after the third centrifugal separation undergoes further centrifugal separation below the locations of the first exhaust port 210.1 and the second exhaust port 210.2, and falls into the oil guide channel 219b. The remaining refrigerant, as the refrigerant after the fourth centrifugal separation, enters the first condensing chamber 104b and the second condensing chamber 105b through the first exhaust port 210.1 and the second exhaust port 210.2, respectively. Similar to the separation chamber 203a, during the process of the refrigerant flowing towards the first exhaust port 210.1 and the second exhaust port 210.2 in the separation chamber 203b, the lubricating oil also undergoes gravity separation. In some embodiments, when the vertical separation plates 211 and 213 are close together, the refrigerant reaching between the vertical separation plates 211 and 213 generates a vortex between the vertical separation plates 211 and 213. The centrifugal force generated by the vortex further causes some of the lubricating oil to be separated and fall into the oil guide channel 219b.As described above, in separation chamber 203b, the lubricating oil and refrigerant gas in the refrigerant undergo impact separation, centrifugal separation, and gravity separation. The simultaneous presence of these multiple separation mechanisms allows this application to provide sufficient oil separation for the refrigerant.

[0046] Figures 3a-3b A condenser 10c according to yet another embodiment of this application is shown. Figure 3a This is a cross-sectional view of a condenser 10c according to yet another embodiment of this application. Figure 3b yes Figure 3a The condenser 10c shown is a cross-sectional view along the CC direction.

[0047] exist Figures 3a-3b The condenser 10c and its oil separation structure 201c in the embodiment shown are respectively with Figures 2a-2b The condenser 10b and oil separation structure 201b in the illustrated embodiment are similar, differing only in the construction of the inlet pipe and the arrangement of the separation plate in the separation chamber. For the sake of brevity, only the differences between condenser 10c and condenser 10b will be described below.

[0048] like Figure 3a and Figure 3b As shown, the condenser 10c includes an inlet pipe 301c, which, unlike the inlet pipe 301a, is a straight pipe extending into the separation chamber 203c, thus having a downward-facing outlet 303c.

[0049] Continue to refer to Figure 3a and Figure 3b In the separation chamber 203c of the oil separation structure 201c, vertical separation plates 217 and 218 are installed. Vertical separation plate 217 has a similar arrangement to vertical separation plate 211, and vertical separation plate 218 has a similar arrangement to vertical separation plate 212. Vertical separation plate 217 is used to block the upper airflow passage in the separation chamber 203c, and vertical separation plate 218 is used to block the lower airflow passage in the separation chamber 203c. Since the oil separation structure 201c, like the oil separation structure 201b, also has no top wall, Figures 3a-3b In one embodiment, the vertical separation plate 217 extends downward from the inner surface of the top of the condenser 10c housing. In other embodiments, different numbers of vertical separation plates 217 and 218 are provided in the separation chamber 203c.

[0050] The separation chamber 203c is further provided with a transverse separation plate 231. The transverse separation plate 231 is arranged transversely to the extension direction of the separation chamber 203c and abuts against the two side walls of the oil separation structure 201c. The transverse separation plate 231 is located below the corresponding inlet pipe 301c and faces the outlet 303c of the inlet pipe 301c. On one side of the location of the first exhaust port 210.1 and the second exhaust port 210.2, a vertical separation plate 218 is located between the vertical separation plate 217 and the transverse separation plate 231. Although not shown in the figure, it should be understood that the arrangement of the inlet pipe 301c and the separation plate in this embodiment can also be applied to other applications. Figures 1a-1c and Figures 2a-2b In one embodiment, the inlet pipe and separation plate are replaced.

[0051] The following is combined Figure 3a Explanation from the location Figure 3a The process shown is the separation of lubricating oil and refrigerant gas in the refrigerant entering the oil separation chamber 203c through the inlet pipe 301c on the right. It should be understood that the process involves separating lubricating oil and refrigerant gas from the refrigerant in the oil separation chamber 203c. Figure 3a The process of separating lubricating oil and refrigerant gas in the refrigerant entering the oil separation chamber 203c through the inlet pipe 301c on the left side is similar.

[0052] like Figure 3aAs shown, after the refrigerant is discharged from the outlet 303c of the inlet pipe 301c, it flows toward the transverse separation plate 231 and impacts the transverse separation plate 231. Through the impact, some of the lubricating oil in the refrigerant is separated, and the separated lubricating oil drips into the oil guide channel 219b at the bottom of the separation chamber 203c. The remaining refrigerant continues to flow in the separation chamber 203c as the refrigerant after the first impact separation. A portion of the refrigerant after the first impact separation flows toward the vertical separation plate 217 and impacts the vertical separation plate 217. This impact causes some of the lubricating oil in this portion of the refrigerant after the first impact separation to be separated and drip into the oil guide channel 219b. The remaining refrigerant, after the second impact separation, flows toward the first exhaust port 210.1 and the second exhaust port 210.2. Because the flow of refrigerant after the second impact separation is blocked by the vertical separation plate 217, the refrigerant rotates around the vertical separation plate 217 during its flow to change direction and bypass the obstruction. The centrifugal force generated by the rotation further causes the lubricating oil in the refrigerant after the second impact separation to be centrifugally separated, thus dripping into the oil guide channel 219a. The remaining refrigerant, as the refrigerant after the first centrifugal separation, enters the condensing chambers on both sides of the separation chamber 203c for cooling through the first exhaust port 210.1 and the second exhaust port 210.2, respectively. A portion of the refrigerant after the first impact separation flows toward the vertical separation plate 218 and impacts the vertical separation plate 218. This impact causes some of the lubricating oil in this portion of the refrigerant to be separated and drip into the oil guide channel 219b. The remaining refrigerant, as the refrigerant after the third impact separation, flows toward the first exhaust port 210.1 and the second exhaust port 210.2. Because the flow of refrigerant after the third impact separation is blocked by the vertical separation plate 218, the refrigerant rotates around the vertical separation plate 218 during its flow to change direction and bypass the obstruction. The centrifugal force generated by the rotation further causes the lubricating oil in the refrigerant after the third impact separation to be centrifugally separated, thus dripping into the oil guide channel 219b. The remaining refrigerant, as the refrigerant after the second centrifugal separation, enters the condensing chambers on both sides of the separation chamber 203c for cooling through the first exhaust port 210.1 and the second exhaust port 210.2, respectively. In addition, some of the refrigerant after the first impact separation flows towards the end wall 207 and impacts the end wall 207. This impact causes some of the lubricating oil in this portion of the refrigerant after the first impact separation to be separated and drip into the oil guide channel 219b at the bottom of the separation chamber 203c. The remaining refrigerant, as the refrigerant after the fourth impact separation, changes direction and flows towards the first exhaust port 210.1 and the second exhaust port 210.2, and further impacts and centrifugal separations occur at the vertical separation plates 217 and 218. Similar to that in separation chambers 203a and 203b, as the refrigerant flows toward the first exhaust port 210.1 and the second exhaust port 210.2 in separation chamber 203c, the lubricating oil also undergoes gravity separation.In some embodiments, when the vertical separation plates 217 on both sides of the first exhaust port 210.1 and the second exhaust port 210.2 are close together, the refrigerant arriving at the first exhaust port 210.1 and the second exhaust port 210.2 generates a vortex between the two vertical separation plates 217. The centrifugal force generated by the vortex further causes some of the lubricating oil to be separated and fall into the oil guide channel 219b. As described above, in the separation chamber 203c, the lubricating oil and refrigerant gas in the refrigerant undergo impact separation, centrifugal separation, and gravity separation. The simultaneous presence of such multiple separation methods enables this application to provide sufficient oil separation.

[0053] The embodiments according to this application have at least the following technical effects:

[0054] 1. The oil separation structure used in this application provides a variety of separation methods, including impact separation, centrifugal separation and gravity separation, thus the oil separation structure of this application can provide sufficient oil separation.

[0055] 2. Due to the construction of the oil separation structure in this application and the excellent oil separation effect it provides, a large separation chamber is not required for oil separation. The vertical separation plate in the separation chamber of this application forms an obstruction as the refrigerant flows towards the first and second outlets, thereby reducing the flow velocity of the refrigerant in the separation chamber and ensuring that the refrigerant has sufficient time to complete oil separation. Therefore, the oil separation structure of this application is designed with a small-sized separation chamber. The small size of the oil separation structure in this application allows most of the condenser cavity to be used as a condensation chamber, thereby improving the heat exchange capacity of the condenser. Specifically, as stated above, the width of the separation chamber handle is designed to be slightly larger than the diameter of the inlet pipe, resulting in a very small handle width. Therefore, in this application, the oil separation structure occupies only a small portion of the condenser cavity, allowing the condenser cavity to provide a large space for condensation. Thus, in this application, most of the space in the condenser cavity is occupied by two condensation chambers on both sides of the oil separation structure, allowing for the installation of many condensing tubes in the two condensation chambers without increasing the size of the condenser, ensuring the heat exchange capacity of the condenser. Conversely, without vertical separation plates in the separation chamber, the chamber would need to be designed to be large to reduce the refrigerant's velocity in order for the refrigerant to travel for a sufficient time to complete oil separation. This results in the separation chamber occupying a significant portion of the condenser cavity, leaving only a small portion for condensation and thus reducing the condenser's heat exchange capacity.

[0056] 3. This application utilizes an oil separation structure to make the condenser cavity include two condensing chambers located on both sides of the separation chamber, which is beneficial to improving heat exchange efficiency. Specifically, assuming the oil separation structure is placed on one side of the cavity, such that the cavity includes a separation chamber and a single condensing chamber, the size of the assumed single condensing chamber is larger than the size of either of the two condensing chambers according to this application in the width direction of the condenser shell. Therefore, compared to either of the two condensing chambers according to this application, the assumed single condensing chamber will have a greater number of condensing tubes. This causes the refrigerant gas to be cooled entering the assumed single condensing chamber to encounter more resistance when flowing towards the condensing tube located in the middle of the assumed single condensing chamber, making it more difficult to reach the condensing tube located in the middle of the assumed single condensing chamber, and thus making it difficult to exchange heat with the cooling fluid in the condensing tube located in the middle of the assumed single condensing chamber to achieve cooling. Therefore, assuming the oil separation structure is placed on one side of the cavity, such that the cavity includes a separation chamber and a single condensing chamber, the heat exchange efficiency of the condenser will be reduced. Conversely, the oil separation structure of this application, which includes two condensing chambers located on both sides of the oil separation structure, allows each condensing chamber to be equipped with a smaller number of condensing tubes. This makes it easier for the refrigerant gas to be cooled entering each condensing chamber to reach the condensing tubes located in the middle of the two condensing chambers to exchange heat with the cooling fluid in these condensing tubes, thereby improving the heat exchange efficiency.

[0057] 4. When the separation chamber is centrally located within the condenser cavity along the width of the condenser shell, the two condensing chambers on either side of the separation chamber have the same dimensions. Therefore, the dimensions of both condensing chambers along the width of the condenser shell are not excessive, allowing for the arrangement of a suitable number of condenser tubes in both chambers along the width of the shell. This further facilitates the flow of the refrigerant gas entering each condensing chamber to the condenser tubes located in the center of each chamber, thus further improving heat exchange efficiency.

[0058] 5. When the inlet pipe is centered at the top of the condenser shell in the width direction and the separation chamber is centered in the condenser cavity in the width direction of the condenser shell, the refrigerant has the maximum flight altitude after entering the separation chamber. Therefore, the refrigerant has the longest flight time in the separation chamber, which is more conducive to the full separation of lubricating oil in the refrigerant in the separation chamber.

[0059] 6. The funnel-shaped structure of the separation chamber in this application allows the refrigerant to have a higher flow velocity at the handle of the separation chamber, which facilitates the impact and centrifugal separation of the lubricating oil by means of the vertical separation plate. At the opening of the separation chamber, the flow velocity decreases, increasing the refrigerant's flight time at the opening, which is beneficial for the gravity separation of the lubricating oil. Furthermore, in embodiments using a filter screen, the reduced refrigerant flow velocity at the opening of the separation chamber facilitates further capture and separation of the lubricating oil by the filter screen.

[0060] Although this disclosure has been described in conjunction with examples of the embodiments outlined above, various alternatives, modifications, variations, improvements, and / or substantially equivalents, whether known or currently or soon to be foreseen, will likely be apparent to those skilled in the art. Furthermore, the technical effects and / or technical problems described herein are exemplary and not limiting; therefore, the disclosures herein may be used to solve other technical problems and have other technical effects and / or can solve other technical problems. Accordingly, the examples of embodiments of this disclosure as set forth above are intended to be illustrative and not limiting. Various changes may be made without departing from the spirit or scope of this disclosure. Therefore, this disclosure is intended to include all known or previously developed alternatives, modifications, variations, improvements, and / or substantially equivalents.

Claims

1. A condenser with an oil separation structure, characterized by: include: A housing (101) that defines a cavity (102) is provided with at least one inlet pipe (301a, 301c) for receiving a refrigerant containing lubricating oil to be condensed. The housing (101) includes a length direction, a height direction and a width direction. An oil separation structure (201a, 201b, 201c) is fixed in the cavity (102), the oil separation structure (201a, 201b, 201c) includes a separation chamber (203a, 203b, 203c), at least one inlet pipe (301a, 301c) extends into the separation chamber (203a, 203b, 203c), wherein the separation chamber (203a, 203b, 203c) is configured to separate the lubricating oil and refrigerant gas in the refrigerant; The cavity (102) includes a first condensing chamber (104a, 104b) and a second condensing chamber (105a, 105b) separated by the oil separation structures (201a, 201b, 201c). The first condensing chamber (104a, 104b) and the second condensing chamber (105a, 105b) are located on both sides of the separation chamber (203a, 203b, 203c) in the width direction of the housing (101), and extend along the length direction of the housing (101). The oil separation structure (201a, 201b, 201c) has a first exhaust port (210.1) and a second exhaust port (210.2) on its upper part, which respectively connect the first condensing chamber (104a, 104b) and the second condensing chamber (105a, 105b) to the separation chamber (203a, 203b, 203c) in fluid communication. This allows the refrigerant gas separated by the separation chamber (203a, 203b, 203c) to enter the first condensing chamber (104a, 104b) and the second condensing chamber (105a, 105b) for condensation. The oil separation structure (201a, 201b, 201c) has at least one oil drain port (214a, 214b) at its bottom, which allows the lubricating oil separated by the separation chamber (203a, 203b, 203c) to be discharged from the separation chamber (203a, 203b, 203c).

2. The condenser with an internal oil separation structure according to claim 1, characterized in that: The separation chambers (203a, 203b, 203c) are centrally arranged in the cavity (102) in the width direction of the housing (101).

3. The condenser with an internal oil separation structure according to claim 2, characterized in that: The oil separation structure (201a, 201b, 201c) includes a plurality of vertical separation plates (211, 212, 213, 217, 218) spaced apart along the length of the housing (101) in the separation chambers (203a, 203b, 203c). Each of the plurality of vertical separation plates (211, 212, 213, 217, 218) is arranged transversely to the extension direction of the separation chambers (203a, 203b, 203c). At least a portion of the plurality of vertical separation plates (211, 213, 217) is configured to block the upper fluid passage in the separation chambers (203a, 203b, 203c), and at least another portion of the plurality of vertical separation plates (212, 218) is configured to block the lower fluid passage in the separation chambers (203a, 203b, 203c).

4. The condenser with an internal oil separation structure according to claim 3, characterized in that: On one side of the first exhaust port (210.1) and the second exhaust port (210.2), at least a portion of the vertical separation plates (211, 213, 217) that block the upper fluid passage in the separation chambers (203a, 203b, 203c) are alternately arranged with at least another portion of the vertical separation plates (212, 218) that block the lower fluid passage in the separation chambers (203a, 203b, 203c).

5. The condenser with an internal oil separation structure according to claim 4, characterized in that: The at least one inlet pipe (301a, 301c) is centrally located on the top of the housing (101) in the width direction of the housing (101).

6. The condenser with an internal oil separation structure according to claim 5, characterized in that: The portion of the at least one inlet pipe (301c) extending into the separation chamber (203c) extends along the height direction of the housing (101); and The oil separation structure (201c) also includes a transverse separation plate (231) located below the at least one inlet pipe (301c).

7. The condenser with an internal oil separation structure according to claim 5, characterized in that: The portion of the at least one inlet pipe (301a) extending into the separation chamber (203a, 203b) is bent into a curved shape in a direction away from the first exhaust port (210.1) and the second exhaust port (210.2).

8. The condenser with an internal oil separation structure according to claim 5, characterized in that: The separation chambers (203a, 203b, 203c) extend along the length of the housing (101). The cross-section of the separation chambers (203a, 203b, 203c) in a plane parallel to the height and width directions of the housing (101) is generally funnel-shaped, such that the separation chambers (203a, 203b, 203c) have an opening (221a) and a handle (222a). The width dimension (W1, W2) of the handle (222a) is designed to be slightly larger than the diameter d of the at least one inlet pipe (301a, 301c).

9. The condenser with an internal oil separation structure according to claim 4, characterized in that: The oil separation structure (201a) includes a shell (202a) defining the separation chamber (203a). The shell (202a) includes opposing side walls (204, 205), opposing end walls (206, 207), and opposing top walls (208) and bottom walls (209a) connected to each other. The top wall (208) abuts against the top inner surface of the housing (101), and the upper portions of the opposing side walls (204, 205) are respectively provided with a first exhaust port (210.1) and a second exhaust port (210.2); and The vertical separation plate (211) that blocks the upper fluid passage in the separation chamber (203a) extends from the top wall (208) for at least a portion of the height of the separation chamber (203a), and the vertical separation plate (212) that blocks the lower fluid passage in the separation chamber (203a) extends from the bottom of the oil separation structure (201a) for at least a portion of the height of the separation chamber (203a).

10. The condenser with an internal oil separation structure according to claim 4, characterized in that: The oil separation structure (201b, 201c) includes a shell defining the separation chamber (203b, 203c). The shell includes opposing sidewalls (204, 205), opposing endwalls (206, 207), and a bottom wall (209b) connected to each other. The tops of the opposing sidewalls (204, 205) and the opposing endwalls (206, 207) abut against the top inner surface of the housing (101). The upper portions of the opposing sidewalls (204, 205) are respectively provided with a first exhaust port (210.1) and a second exhaust port (210.2). The at least portion of the vertical separation plates (211, 213, 217) that block the upper fluid passage in the separation chambers (203b, 203c) extends from the top inner surface of the housing (101) of the condenser for at least a portion of the height of the separation chambers (203b, 203c), and the at least other portion of the vertical separation plates (212, 218) that block the lower fluid passage in the separation chambers (203b, 203c) extends from the bottom of the oil separation structure (201b, 201c) for at least a portion of the height of the separation chambers (203b, 203c).

11. The condenser with an internal oil separation structure according to claim 9 or 10, characterized in that: The vertical separation plates (212, 218) that block the lower fluid passage in the separation chambers (203a, 203b, 203c) are spaced apart from the bottom walls (209a, 209b) to define oil guide channels (219a, 219b).

12. The condenser with an internal oil separation structure according to claim 9 or 10, characterized in that: The bottom wall (209a) of the oil separation structure (201a) abuts against the bottom inner surface of the housing (101), and at least one oil drain port (214a) is provided on the bottom wall (209a); and The condenser includes a first subcooling box (107.1) and a second subcooling box (107.2) located at the bottom of the cavity (102), the first subcooling box (107.1) and the second subcooling box (107.2) being located on both sides of the oil separation structure (201a) in the width direction of the housing (101).

13. The condenser with an internal oil separation structure according to claim 9 or 10, characterized in that: The condenser includes a subcooling box (107) disposed at the bottom of the cavity (102), and the bottom wall (209b) of the oil separation structure (201b, 201c) abuts against the subcooling box (107); and The oil separation structure (201b, 201c) further includes at least one oil storage chamber (215) disposed at the bottom of the oil separation structure (201b, 201c) and communicating with the bottom of the separation chamber (203b, 203c). The at least one oil outlet (214b) is disposed at the bottom of the corresponding at least one oil storage chamber (215), wherein the at least one oil storage chamber (215) is accommodated at the bottom of one of the first condensation chamber (104b) and the second condensation chamber (105b).

14. A refrigeration and air conditioning system, characterized in that: The refrigeration and air conditioning system includes a condenser with an internal oil separation structure as described in any one of claims 1-13.

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