Pipe joint, water outlet pipe assembly and air conditioner

Abstract

The present invention provides a pipe joint, a water outlet pipe assembly and an air conditioner, wherein the pipe joint comprises a plugging piece, a joint body and an exhaust structure arranged on the joint body, wherein the joint body has a hollow cavity, one end of the exhaust structure is connected to the hollow cavity, and the other end of the exhaust structure is detachably connected to the plugging piece. The pipe joint of the present invention is provided with an exhaust structure thereon, and exhaust is achieved by using the exhaust structure, thereby eliminating the need for installing an exhaust valve, which not only improves the overall assembly efficiency of the pipe joint and the water outlet pipe assembly and reduces the production cost of the air conditioner, but also reduces the number of sealing points of the pipe joint from two to one, thereby improving the overall sealing performance of the pipe joint.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a pipe joint, a water outlet pipe assembly and an air conditioner. Background Art

[0002] With the continuous improvement of people's living standards, air conditioners have been widely used.

[0003] At present, the duct air conditioner includes components such as an evaporator assembly. The evaporator assembly includes a water inlet pipe assembly and a water outlet pipe assembly. The water outlet pipe assembly uses a pipe joint to cooperate with an exhaust valve to achieve water outlet and exhaust, and a raw tape is wrapped around the thread of the exhaust valve for sealing. The installation process is cumbersome and inefficient. Summary of the invention

[0004] The problem solved by the invention is how to improve the assembly efficiency of the water outlet pipe assembly.

[0005] To solve the above problems, the present invention provides a pipe joint, comprising a sealing piece, a joint body and an exhaust structure arranged on the joint body, the joint body having a hollow cavity, one end of the exhaust structure being connected to the hollow cavity, and the other end of the exhaust structure being detachably connected to the sealing piece.

[0006] In this way, by setting an exhaust structure on the pipe joint and using the exhaust structure to achieve exhaust, the installation of the exhaust valve can be omitted, which not only improves the overall assembly efficiency of the pipe joint and reduces the production cost of the air conditioner, but also reduces the sealing points of the pipe joint from two to one, thereby improving the overall sealing of the pipe joint.

[0007] Optionally, the hollow cavity comprises a water inlet cavity, an air gathering cavity and a water outlet cavity which are connected in sequence, an exhaust cavity is provided in the exhaust structure, and the exhaust cavity is connected with the air gathering cavity.

[0008] In this way, when exhaust is needed, it is only necessary to remove the sealing part. When the water flows through the gas gathering chamber, the gas mixed in the water flow will diffuse toward the gas gathering chamber under the action of the pressure difference and be discharged from the exhaust chamber instead of flowing away with the water flow, thereby increasing the exhaust volume. This effectively improves the exhaust effect of the pipe joint, reduces the presence of gas in the water system, and plays a role in optimizing the water system.

[0009] Optionally, the exhaust cavity is arranged obliquely relative to the hollow cavity.

[0010] Compared with setting the exhaust cavity perpendicular to the hollow cavity, under the condition of the same cavity diameter, this can increase the length of the exhaust cavity and the capacity of the gas stored in the exhaust cavity, thereby further increasing the exhaust volume of the pipe joint and improving the exhaust effect.

[0011] Optionally, the exhaust cavity includes a first exhaust cavity and a second exhaust cavity, the first exhaust cavity is connected to the gas gathering cavity and the second exhaust cavity, and the blocking member is threadedly connected to the exhaust structure at the second exhaust cavity.

[0012] In this way, the air flow channel formed by the first exhaust chamber, the gas gathering chamber and the second exhaust chamber can not only facilitate the gas discharge, but also can be used to collect gas, which can further enhance the exhaust effect of the pipe joint and ensure complete exhaust; moreover, the threaded connection between the sealing part and the exhaust structure makes the connection between the sealing part and the joint body more firm and reliable, and also facilitates the removal of the sealing part during exhaust.

[0013] Optionally, the gas gathering chamber includes a first cavity connected to and communicated with the water inlet cavity, a second cavity connected to and communicated with the water outlet cavity, and a third cavity communicating with the first cavity and the second cavity; the first cavity is in the shape of a frustum of a cone, and the small end of the first cavity is connected to the water inlet cavity, and / or the second cavity is in the shape of a frustum of a cone, and the small end of the second cavity is connected to the water outlet cavity.

[0014] In this way, during the exhaust process, when the water flow passes through the gas gathering chamber, the gas mixed in the water flow can be better diffused in the gas gathering chamber and discharged along the exhaust chamber, making the exhaust more complete.

[0015] Optionally, the longitudinal section of the first cavity is a first isosceles trapezoid, and a first angle is formed between the waist of the first isosceles trapezoid and the center line of symmetry of the first isosceles trapezoid; the longitudinal section of the second cavity is a second isosceles trapezoid, and a second angle is formed between the waist of the second isosceles trapezoid and the center line of symmetry of the second isosceles trapezoid, and the first angle is greater than the second angle.

[0016] In this way, on the one hand, the outward expansion of gas can be increased, while the amount of water diffusion into the gas gathering cavity can be reduced; on the other hand, when the water flows through the gas gathering cavity, since the first angle is greater than the second angle, the resistance of the second cavity to the water flow is reduced, making the water flow through the second cavity smoother.

[0017] Optionally, the exhaust chamber further includes a third exhaust chamber in the shape of a truncated cone, wherein the third exhaust chamber is located between the first exhaust chamber and the second exhaust chamber and connects the first exhaust chamber and the second exhaust chamber, and the sealing member abuts against and seals the chamber wall of the third exhaust chamber.

[0018] In this way, the firmness and sealing of the connection between the sealing piece and the joint body can be further guaranteed.

[0019] Optionally, the longitudinal section of the third exhaust cavity is a third isosceles trapezoid, the longitudinal section of the portion of the sealing member inserted into the third exhaust cavity is a fourth isosceles trapezoid, and the ratio of the waist length of the third isosceles trapezoid to the waist length of the fourth isosceles trapezoid is between 2 and 3.

[0020] In this way, it can prevent the sealing between the blocking piece and the wall of the third exhaust chamber from being poorly sealed and leaking due to the small abutment area, and it can also prevent the sealing piece and the wall of the third exhaust chamber from being easily stripped or broken when the blocking piece is tightened due to the large abutment area, thereby ensuring the sealing between the blocking piece and the wall of the third exhaust chamber and the reliability of the connection between the blocking piece and the exhaust structure.

[0021] Optionally, the cavity depth of the third exhaust cavity ranges from 0.5 mm to 1.5 mm.

[0022] In order to solve the above problems, the present invention further provides a water outlet pipe assembly, comprising any of the above-mentioned pipe joints.

[0023] In order to solve the above problem, the present invention also provides an air conditioner, comprising the water outlet pipe assembly described above.

[0024] The advantages of the water outlet pipe assembly, the air conditioner and the above-mentioned pipe joint compared with the prior art are the same, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a pipe joint and an exhaust valve in the prior art in an assembled state;

[0026] Figure 2 It is a cross-sectional schematic diagram of the joint body and the blocking member in the assembled state according to the embodiment of the present invention;

[0027] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0028] Figure 4 It is a cross-sectional schematic diagram of the joint body and the blocking member in the separated state according to the embodiment of the present invention;

[0029] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0030] Figure 6 for Figure 4 A partial enlarged view of point C in the middle;

[0031] Figure 7 Schematic diagram of the structure of the connector body in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1-pipe joint, 11-sealing piece, 111-abutting surface, 12-hollow cavity, 121-water inlet cavity, 122-gas gathering cavity, 1221-first cavity, 1222-second cavity, 1223-third cavity, 123-water outlet cavity, 13-exhaust structure, 131-exhaust cavity, 1311-first exhaust cavity, 1312-second exhaust cavity, 1313-third exhaust cavity, 14-joint body, 2-exhaust valve, 3-water outlet pipe, 4-evaporator assembly. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] In the description of the present invention, it should be noted that a coordinate system XZ is provided herein, wherein the positive direction of the X axis represents the inner direction, the reverse direction of the X axis represents the outer direction, the positive direction of the Z axis represents the upper direction, and the reverse direction of the Z axis represents the lower direction. The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "higher", "lower", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] Combination Figure 2 and Figure 4 As shown, this embodiment provides a pipe joint, including a sealing member 11, a joint body 14 and an exhaust structure 13 arranged on the joint body 14, the joint body 14 has a hollow cavity 12, one end of the exhaust structure 13 is connected to the hollow cavity 12, and the other end of the exhaust structure 13 is detachably connected to the sealing member 11.

[0037] Combination Figure 1 As shown, for a duct air conditioner, the pipe joint 1 is used to be installed on the water outlet pipe 3 of the duct machine evaporator assembly 4. In the prior art, an exhaust valve 2 is installed on the pipe joint 1, and the exhaust nozzle on the exhaust valve 2 is used to exhaust the gas mixed in the water outlet pipe 3. However, the installation requirements of the exhaust valve 2 are high, and it is also necessary to wrap raw tape around the connection between the exhaust valve 2 and the pipe joint 1 for sealing, and the assembly process is cumbersome. In this embodiment, an exhaust structure 13 is directly provided on the joint body 14, and the exhaust structure 13 is used to achieve exhaust. The sealing member 11 is detachably connected to the exhaust structure 13. When exhaust is not required, the sealing member 11 is sealed at the exhaust structure 13. Figure 2 When exhaust is required, remove the plugging member 11, the gas mixed in the outlet pipe 3 flows into the hollow cavity 12 and is discharged from the exhaust structure 13 outside the pipe joint 1, and after the exhaust is completed, the plugging member 11 is sealed at the exhaust structure 13, such as Figure 4 shown.

[0038] In this way, by setting the exhaust structure 13 on the pipe joint 1 and utilizing the exhaust structure 13 to achieve exhaust, the installation of the exhaust valve 2 can be omitted, which not only improves the overall assembly efficiency of the pipe joint 1 and the water outlet pipe assembly and reduces the production cost of the air conditioner, but also reduces the sealing points of the pipe joint 1 from two to one, thereby improving the overall sealing performance of the pipe joint 1.

[0039] Optionally, combined Figure 2 and Figure 4 As shown, the hollow cavity 12 includes a water inlet cavity 121 , a gas collecting cavity 122 and a water outlet cavity 123 which are connected in sequence. An exhaust cavity 131 is provided in the exhaust structure 13 , and the exhaust cavity 131 is connected to the gas collecting cavity 122 .

[0040] In the prior art, the gas mixed in the water outlet pipe 3 easily flows through the exhaust port on the pipe joint 1 along with the liquid working medium in the water outlet pipe 3, so that the exhaust valve 2 is not completely exhausted, and it is easy to cause water leakage when the amount of raw tape wrapped around the connection between the exhaust valve 2 and the pipe joint 1 is not enough. In this embodiment, the liquid working medium flowing out of the water outlet pipe 3 flows into the water inlet of the joint body 14, passes through the water inlet chamber 121, the gas collecting chamber 122, and the water outlet chamber 123 in the axial direction of the hollow cavity 12, and flows out from the water outlet of the joint body 14, as shown in FIG. Figure 2 and Figure 4 As shown; when exhaust is required, the plugging member 11 is removed. Since the air pressure in the gas collecting cavity 122 is lower than the atmospheric pressure outside the pipe joint 1, the gas is discharged from the exhaust cavity 131 outside the pipe joint 1 under the action of the pressure difference. After the exhaust is completed, the plugging member 11 is sealed at the exhaust structure 13; wherein, Figure 2 and Figure 4 The solid arrow in the figure indicates the water flow direction, and the dotted arrow indicates the gas flow direction; it should be noted that the water flow direction mentioned in this embodiment and below is the flow direction of the liquid working medium from the water inlet to the water outlet of the joint body 14, which is also the X-axis direction; wherein the liquid working medium is usually a refrigerant, but for the sake of ease of description, this embodiment and the following text are all illustrated by taking the liquid working medium as water flow.

[0041] In this way, when exhaust is needed, it is only necessary to remove the sealing piece 11. When the water flows through the gas gathering chamber 122, the gas mixed in the water flow will diffuse toward the gas gathering chamber 122 under the action of the pressure difference, and be discharged from the exhaust chamber 131 instead of flowing away with the water flow, thereby increasing the exhaust volume, thereby effectively improving the exhaust effect of the pipe joint 1, reducing the presence of gas in the water system, and optimizing the water system.

[0042] Optionally, combined Figure 2 and Figure 4As shown, the exhaust cavity 131 is arranged obliquely relative to the hollow cavity 12 .

[0043] In this embodiment, the exhaust cavity 131 is tilted relative to the hollow cavity 12 , which means that an angle smaller than 90° is formed between the axis of the exhaust cavity 131 and the axis of the hollow cavity 12 .

[0044] Compared with the exhaust cavity 131 being arranged perpendicular to the hollow cavity 12, under the condition of the same cavity diameter, this can increase the length of the exhaust cavity 131 and the capacity of the gas stored in the exhaust cavity 131, thereby further increasing the exhaust volume of the pipe joint 1 and improving the exhaust effect.

[0045] Optionally, combined Figure 4 As shown, the exhaust cavity 131 includes a first exhaust cavity 1311 and a second exhaust cavity 1312 . The first exhaust cavity 1311 communicates with the gas collecting cavity 122 and the second exhaust cavity 1312 . The blocking member 11 and the exhaust structure 13 are threadedly connected at the second exhaust cavity 1312 .

[0046] The second exhaust cavity 1312 is provided with an internal thread, and the plugging piece 11 is provided with an external thread matched with the internal thread. The plugging piece 11 is screwed into the second exhaust cavity 1312 to achieve a threaded connection between the plugging piece 11 and the exhaust structure 13. The first exhaust cavity 1311 connects the gas collecting cavity 122 with the second exhaust cavity 1312 to form an air flow channel. When the plugging piece 11 is screwed off to exhaust, the gas mixed in the water flow will flow from the gas collecting cavity 122 into the first exhaust cavity 131 when passing through the gas collecting cavity 122, and be discharged from the second exhaust cavity 1312.

[0047] In this way, the air flow channel formed by the first exhaust chamber 1311, the gas gathering chamber 122 and the second exhaust chamber 1312 can not only facilitate the exhaust of gas, but also be used to collect gas, which can further enhance the exhaust effect of the pipe joint 1 and ensure complete exhaust; moreover, the threaded connection between the blocking piece 11 and the exhaust structure 13 makes the connection between the blocking piece 11 and the joint body 14 more firm and reliable, and is also convenient for disassembling the blocking piece 11 during exhaust.

[0048] Optionally, the longitudinal section of the gas gathering cavity 122 may be rectangular or semicircular, and the cavity diameter of the gas gathering cavity 122 is larger than the cavity diameter of the water inlet cavity 121. When the joint body 14 is cut along a plane passing through the axis of the gas gathering cavity 122, since the gas gathering cavity 122 is not a solid and has no surface, the longitudinal section of the gas gathering cavity 122 refers to the projection of the cavity wall of the gas gathering cavity 122 after cutting on the plane.

[0049] When the longitudinal section of the gas gathering chamber 122 is rectangular, the gas gathering chamber 122 is cylindrical, and the cavity diameter of the gas gathering chamber 122 is larger than the cavity diameter of the water inlet chamber 121, so that the gas in the water flow can diffuse in the gas gathering chamber 122; when the longitudinal section of the gas gathering chamber 122 is semicircular, the gas gathering chamber 122 is hemispherical, and the gas in the water flow diffuses more smoothly along the cavity wall of the gas gathering chamber 122, thereby reducing the resistance to the diffusion of the gas in the gas gathering chamber 122.

[0050] Optionally, combined Figure 4 , Figure 6 and Figure 7 As shown, the gas gathering chamber 122 includes a first cavity 1221 connected to and communicated with the water inlet cavity 121, a second cavity 1222 connected to and communicated with the water outlet cavity 123, and a third cavity 1223 communicating the first cavity 1221 and the second cavity 1222; the first cavity 1221 is in a frustum shape, and the small end of the first cavity 1221 is connected to the water inlet cavity 121, and / or the second cavity 1222 is in a frustum shape, and the small end of the second cavity 1222 is connected to the water outlet cavity 123.

[0051] That is to say, only the connection between the gas gathering chamber 122 and the water inlet chamber 121 can be set as a frustum of a cone structure to form a first cavity 1221; or only the connection between the gas gathering chamber 122 and the water outlet chamber 123 can be set as a frustum of a cone structure to form a second cavity 1222; or both the connection between the gas gathering chamber 122 and the water inlet chamber 121 and the connection with the water outlet chamber 123 can be set as frustum of a cone structure; in actual production, it can be selected and set as needed, and the first cavity 1221 or the second cavity 1222 of the frustum of a cone structure can be formed by chamfering, or can be formed by one-piece molding such as casting. In the present embodiment, the cross-sections of the water inlet chamber 121, the gas gathering chamber 122, and the water outlet chamber 123 are all circular. When the first cavity 1221 of the gas gathering chamber 122 is in the shape of a truncated cone, the small head of the truncated cone is connected to the water inlet chamber 121, that is, the cavity diameter of the gas gathering chamber 122 at the first cavity 1221 increases along the water flow direction; when the second cavity 1222 of the gas gathering chamber 122 is in the shape of a truncated cone, the small head of the truncated cone is connected to the water outlet chamber 123, that is, the cavity diameter of the gas gathering chamber 122 at the second cavity 1222 decreases along the water flow direction; wherein, taking the water inlet chamber 121 as an example, the cavity diameter of the water inlet chamber 121 is the diameter of the cross-section of the water inlet chamber 121.

[0052] In this way, during the exhaust process, when the water flow passes through the gas gathering chamber 122, the gas mixed in the water flow can be better diffused in the gas gathering chamber 122 and discharged along the exhaust chamber 131, so that the exhaust is more complete.

[0053] Optionally, combined Figure 6As shown, the first cavity 1221 and the second cavity 1222 are both in the shape of a truncated cone, the small end of the first cavity 1221 is connected to the water inlet cavity 121, and the small end of the second cavity 1222 is connected to the water outlet cavity 123; the longitudinal section of the first cavity 1221 is a first isosceles trapezoid, and the waist of the first isosceles trapezoid forms a first angle with the center line of symmetry of the first isosceles trapezoid; the longitudinal section of the second cavity 1222 is a second isosceles trapezoid, and the waist of the second isosceles trapezoid forms a second angle with the center line of symmetry of the second isosceles trapezoid, and the first angle is greater than the second angle.

[0054] Taking the first cavity 1221 as an example, when the joint body 14 is cut along a plane passing through the axis of the first cavity 1221, since the first cavity 1221 is not a solid and has no surface, the longitudinal section of the first cavity 1221 refers to the projection of the cavity wall of the first cavity 1221 after cutting on the plane, which is also the projection of the cavity wall of the first cavity 1221 after cutting on the plane. Figure 4 In this embodiment, the first cavity 1221 and the second cavity 1222 of the gas collection cavity 122 are both in a truncated cone structure, that is, the longitudinal sections of the first cavity 1221 and the second cavity 1222 are both isosceles trapezoids. For the convenience of description, the longitudinal section of the first cavity 1221 is called the first isosceles trapezoid, and the longitudinal section of the second cavity 1222 is called the second isosceles trapezoid. The symmetry center line of the first isosceles trapezoid is also the axis of the first cavity 1221, and the symmetry center line of the second isosceles trapezoid is also the axis of the second cavity 1222. The axis of the first cavity 1221 or the second cavity 1222 is not equal to the axis of the first cavity 1221. Figure 4 The X-axis is parallel to the middle, so the first angle formed between the waist of the first isosceles trapezoid and the symmetry center line of the first isosceles trapezoid is equivalent to Figure 6 The angle α formed between the waist of the first isosceles trapezoid and the X-axis direction. Similarly, the second angle formed between the waist of the second isosceles trapezoid and the symmetry center line of the second isosceles trapezoid is equivalent to Figure 6 The angle β formed between the waist of the second isosceles trapezoid and the X-axis direction, and α>β. That is, when the first cavity 1221 and the second cavity 1222 of the truncated cone structure are formed by chamfering, the chamfer angle at the first cavity 1221 is greater than the chamfer angle at the second cavity 1222.

[0055] In this way, on the one hand, the outward expansion of gas can be increased, while the amount of water diffused into the gas gathering cavity 122 can be reduced; on the other hand, when the water flows through the gas gathering cavity 122, since the first angle is greater than the second angle, the resistance of the second cavity 1222 to the water flow is reduced, making the water flow through the second cavity 1222 smoother.

[0056] Optionally, combined Figure 4 and Figure 5As shown, the exhaust chamber 131 also includes a third exhaust chamber 1313 in the shape of a truncated cone. The third exhaust chamber 1313 is located at the connection between the first exhaust chamber 1311 and the second exhaust chamber 1312, and connects the first exhaust chamber 1311 and the second exhaust chamber 1312. The sealing member 11 abuts against the cavity wall of the third exhaust chamber 1313 for sealing.

[0057] When the plugging member 11 is screwed into the exhaust cavity 131 and blocks the entire second exhaust cavity 1312, the plugging member 11 and the cavity wall of the third exhaust cavity 1313 are squeezed to form a seal, and at this time, the abutting surface 111 on the plugging member 11 abuts against the cavity wall of the third exhaust cavity 1313. In this way, the firmness and sealing of the connection between the plugging member 11 and the joint body 14 can be further guaranteed.

[0058] Optionally, a diameter of a connection between the third exhaust cavity 1313 and the second exhaust cavity 1312 is smaller than a diameter of the second exhaust cavity 1312 .

[0059] The third exhaust cavity 1313 is in a truncated cone structure. The connection between the third exhaust cavity 1313 and the second exhaust cavity 1312 is the large end of the truncated cone, and the connection between the third exhaust cavity 1313 and the first exhaust cavity 1311 is the small end of the truncated cone. When the diameter of the connection between the third exhaust chamber 1313 and the second exhaust chamber 1312 is larger than the diameter of the second exhaust chamber 1312, after the blocking piece 11 abuts against the cavity wall of the third exhaust chamber 1313, the connection between the third exhaust chamber 1313 and the second exhaust chamber 1312 cannot be completely blocked, so that a certain gap exists between the connection between the third exhaust chamber 1313 and the second exhaust chamber 1312 and the blocking piece 11; when the diameter of the connection between the third exhaust chamber 1313 and the second exhaust chamber 1312 is equal to the diameter of the second exhaust chamber 1312, although the connection between the third exhaust chamber 1313 and the second exhaust chamber 1312 can be completely blocked, the volume of the end of the blocking piece 11 inserted into the exhaust structure 13 needs to be set relatively large, thereby increasing the overall volume of the blocking piece 11.

[0060] In this embodiment, the diameter of the connection between the third exhaust chamber 1313 and the second exhaust chamber 1312 is set to be smaller than the diameter of the second exhaust chamber 1312. In this way, the volume of the blocking member 11 can be reduced while ensuring that the connection between the third exhaust chamber 1313 and the second exhaust chamber 1312 is completely blocked by the blocking member 11.

[0061] Optionally, combined Figure 3 As shown, the longitudinal section of the third exhaust cavity 1313 is a third isosceles trapezoid, the longitudinal section of the portion of the blocking member 11 inserted into the third exhaust cavity 1313 is a fourth isosceles trapezoid, and the ratio of the waist length of the third isosceles trapezoid to the waist length of the fourth isosceles trapezoid is between 2 and 3.

[0062] The ratio between the waist length L1 of the third isosceles trapezoid and the waist length L2 of the fourth isosceles trapezoid reflects the size of the contact area between the plugging member 11 and the cavity wall of the third exhaust cavity 1313. The larger the ratio of L1 to L2, the smaller the contact area between the plugging member 11 and the cavity wall of the third exhaust cavity 1313. On the contrary, the smaller the ratio of L1 to L2, the larger the contact area between the plugging member 11 and the cavity wall of the third exhaust cavity 1313. When the ratio of L1 to L2 is too large, it means that the contact area between the plugging member 11 and the cavity wall of the third exhaust cavity 1313 is too small, and the sealing between the plugging member 11 and the third exhaust cavity 1313 is not tight, which is easy to leak; when the ratio of L1 to L2 is too small, it means that the contact area between the plugging member 11 and the cavity wall of the third exhaust cavity 1313 is too large, and when the plugging member 11 is tightened, the torque becomes larger, which is easy to cause the plugging member 11 to slip or break.

[0063] In the present embodiment, the ratio of the waist length L1 of the third isosceles trapezoid to the waist length L2 of the fourth isosceles trapezoid is set between 2 and 3. This can prevent the sealing between the blocking piece 11 and the wall of the third exhaust chamber 1313 from being too small and causing water leakage. It can also prevent the blocking piece 11 and the wall of the third exhaust chamber 1313 from being too large and causing thread slippage or breakage when the blocking piece 11 is tightened. This ensures the sealing between the blocking piece 11 and the wall of the third exhaust chamber 1313 and the reliability of the connection between the blocking piece 11 and the exhaust structure 13.

[0064] Preferably, the ratio between the waist length of the third isosceles trapezoid and the waist length of the fourth isosceles trapezoid is 5: 2. At this time, the contact seal between the plugging member 11 and the third exhaust cavity 1313 meets the requirements and has the best effect. At the same time, the torque applied to the plugging member 11 when tightened is moderate, and the deformation is within an acceptable range.

[0065] Optionally, the cavity depth of the third exhaust cavity 1313 ranges from 0.5 mm to 1.5 mm.

[0066] The cavity depth of the third exhaust cavity 1313 refers to the length of the third exhaust cavity 1313 extending along its axial direction, and is also the vertical distance from the connection between the third exhaust cavity 1313 and the first exhaust cavity 1311 to the connection between the third exhaust cavity 1313 and the second exhaust cavity 1312. The third exhaust cavity 1313 can be formed by chamfering the connection between the first exhaust cavity 1311 and the second exhaust cavity 1312, or can be formed by one-piece molding such as casting. When the third exhaust cavity 1313 is formed by chamfering, the cavity depth of the third exhaust cavity 1313 refers to the width of the chamfer, which is also the length of the right-angled side of the chamfer. In this embodiment, the cavity depth of the third exhaust cavity 1313 is set within the range of 0.5 mm to 1.5 mm, so that the third exhaust cavity 1313 is formed by chamfering at the connection between the first exhaust cavity 1311 and the second exhaust cavity 1312.

[0067] Yet another embodiment of the present invention provides a water outlet pipe assembly, which includes any of the above-mentioned pipe joints.

[0068] In this embodiment, the water outlet pipe assembly includes a water outlet pipe 3 and any one of the above-mentioned pipe joints 1, wherein the pipe joint 1 is welded to the water outlet pipe 3, wherein the pipe joint 1 includes a sealing member 11 and a joint body 14, wherein the joint body 14 is provided with an exhaust structure 13, and the sealing member 11 is detachably sealed at the exhaust structure 13; thus, by providing the exhaust structure 13 on the joint body 14 and utilizing the exhaust structure 13 to achieve exhaust, the installation of the exhaust valve 2 can be omitted, which not only improves the overall assembly efficiency of the pipe joint 1 and reduces the production cost of the air conditioner, but also reduces the sealing points of the pipe joint 1 from two to one, thereby improving the overall sealing performance of the pipe joint 1.

[0069] Another embodiment of the present invention provides an air conditioner to solve the problem of how to improve the exhaust effect at the pipe joint in the water outlet pipe assembly. The air conditioner includes the water outlet pipe assembly described above.

[0070] The air conditioner in this embodiment includes an evaporator assembly 4 and the above-mentioned water outlet pipe assembly. By arranging the exhaust structure 13 on the joint body 14 and using the exhaust structure 13 to achieve exhaust, the installation of the exhaust valve 2 can be omitted, which not only improves the overall assembly efficiency of the pipe joint 1 and reduces the production cost of the air conditioner, but also reduces the sealing points of the pipe joint 1 from two to one, thereby improving the overall sealing performance of the pipe joint 1.

[0071] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A pipe joint, characterized in that: The joint body (14) comprises a plugging member (11), a joint body (14), and an exhaust structure (13) arranged on the joint body (14); the joint body (14) has a hollow cavity (12) in it, one end of the exhaust structure (13) is in communication with the hollow cavity (12), and the other end of the exhaust structure (13) is detachably connected to the plugging member (11); The hollow cavity (12) comprises a water inlet cavity (121), a gas gathering cavity (122) and a water outlet cavity (123) which are connected in sequence, the cavity diameter of the gas gathering cavity (122) being larger than the cavity diameter of the water inlet cavity (121), and an exhaust cavity (131) being provided in the exhaust structure (13), and the exhaust cavity (131) being connected to the gas gathering cavity (122); The gas gathering cavity (122) comprises a first cavity (1221) communicating with the water inlet cavity (121), a second cavity (1222) communicating with the water outlet cavity (123), and a third cavity (1223) communicating with the first cavity (1221) and the second cavity (1222); The first cavity (1221) is in the shape of a truncated cone, and the small end of the first cavity (1221) is connected to the water inlet cavity (121); the second cavity (1222) is in the shape of a truncated cone, and the small end of the second cavity (1222) is connected to the water outlet cavity (123).

2. The pipe joint according to claim 1, characterized in that The exhaust cavity (131) is arranged to be inclined relative to the hollow cavity (12).

3. The pipe joint according to claim 1, characterized in that: The exhaust cavity (131) comprises a first exhaust cavity (1311) and a second exhaust cavity (1312); the first exhaust cavity (1311) is connected to the gas gathering cavity (122) and the second exhaust cavity (1312); the blocking member (11) and the exhaust structure (13) are threadedly connected at the second exhaust cavity (1312).

4. The pipe joint according to any one of claims 1 to 3, characterized in that: The longitudinal section of the first cavity (1221) is a first isosceles trapezoid, and a first angle is formed between the waist of the first isosceles trapezoid and the symmetry center line of the first isosceles trapezoid; the longitudinal section of the second cavity (1222) is a second isosceles trapezoid, and a second angle is formed between the waist of the second isosceles trapezoid and the symmetry center line of the second isosceles trapezoid, and the first angle is greater than the second angle.

5. The pipe joint according to claim 3, characterized in that: The exhaust cavity (131) further comprises a third exhaust cavity (1313) in the shape of a truncated cone, wherein the third exhaust cavity (1313) is located between the first exhaust cavity (1311) and the second exhaust cavity (1312), and connects the first exhaust cavity (1311) and the second exhaust cavity (1312), and the blocking member (11) is in abutment and sealing relationship with the cavity wall of the third exhaust cavity (1313).

6. The pipe joint according to claim 5, characterized in that The longitudinal section of the third exhaust cavity (1313) is a third isosceles trapezoid, the longitudinal section of the portion of the blocking member (11) inserted into the third exhaust cavity (1313) is a fourth isosceles trapezoid, and the ratio of the waist length of the third isosceles trapezoid to the waist length of the fourth isosceles trapezoid is between 2 and 3.

7. The pipe joint according to claim 5 or 6, characterized in that: The cavity depth of the third exhaust cavity (1313) ranges from 0.5 mm to 1.5 mm.

8. A water outlet pipe assembly, characterized in that: The invention comprises the pipe joint according to any one of claims 1 to 7.

9. An air conditioner, characterized in that: The invention comprises the water outlet pipe assembly described in claim 8.

Images