阅读说明：本技术 冷凝器 (Condenser ) 是由 张平 汤庆华 杨胜梅 于 2020-06-10 设计创作，主要内容包括：本申请提供了一种冷凝器,冷凝器包括冷凝器壳体、进气管、换热管组以及振动装置。振动装置包括引发部件和传动部件,引发部件与传动部件相连接。引发部件能够被从进气管流入冷凝器壳体内的制冷剂蒸汽冲击而运动。传动部件套设在换热管组中至少部分换热管的外侧,传动部件被配置为能够将引发部件的运动传递到至少部分换热管,以引起至少部分换热管的振动。换热管与制冷剂热交换的过程中,高温的制冷剂蒸汽容易凝结在换热管的外壁上,增加了换热管外侧的热阻。本申请的振动装置能够利用制冷剂蒸汽的脉动能量带动部分换热管振动,通过振动减少或去除换热管外壁上的制冷剂液膜,提高了换热管与制冷剂蒸汽的换热效率。(The application provides a condenser, condenser include condenser casing, intake pipe, heat exchange tube group and vibrating device. The vibration device comprises an initiation component and a transmission component, wherein the initiation component is connected with the transmission component. The inducing member can be moved by being struck by the refrigerant vapor flowing into the condenser case from the intake pipe. The transmission component is sleeved on the outer side of at least part of the heat exchange tubes in the heat exchange tube group, and the transmission component is configured to be capable of transmitting the motion of the inducing component to at least part of the heat exchange tubes so as to induce the vibration of at least part of the heat exchange tubes. In the process of heat exchange between the heat exchange tube and the refrigerant, high-temperature refrigerant steam is easy to condense on the outer wall of the heat exchange tube, and the thermal resistance outside the heat exchange tube is increased. The vibrating device can drive part of the heat exchange tubes to vibrate by utilizing the pulsating energy of the refrigerant steam, reduces or removes refrigerant liquid films on the outer walls of the heat exchange tubes through vibration, and improves the heat exchange efficiency of the heat exchange tubes and the refrigerant steam.)

1. A condenser, characterized in that the condenser (100) comprises:

a condenser case (101), an inside of the condenser case (101) forming an accommodation space (111);

an intake duct (102), the intake duct (102) being provided on the condenser case (101), an interior of the intake duct (102) being in fluid communication with the accommodating space (111);

the heat exchange tube set (103), the heat exchange tube set (103) is arranged in the accommodating space (111), and the heat exchange tube set (103) comprises a plurality of heat exchange tubes (113); and

a vibration device (200), the vibration device (200) being disposed within the accommodation space (111), the vibration device (200) comprising:

an inducing member (201) provided in the accommodating space (111) and disposed to be movable by being impacted by refrigerant vapor flowing from the intake pipe (102) into the accommodating space (111); and

a transmission component (202), wherein the transmission component (202) is connected to the inducing component (201) and sleeved outside at least part of the heat exchange tubes (113) in the plurality of heat exchange tubes (113), and the transmission component (202) is configured to transmit the motion of the inducing component (201) to the at least part of the heat exchange tubes (113) so as to induce the vibration of the at least part of the heat exchange tubes (113).

2. The condenser of claim 1, wherein:

the plurality of heat exchange tubes (113) comprise a plurality of upper heat exchange tubes (114) and a plurality of lower heat exchange tubes (115), and the plurality of upper heat exchange tubes (114) are positioned above the plurality of lower heat exchange tubes (115);

the transmission part (202) comprises an upper transmission part (205) and a lower transmission part (206), the lower transmission part (206) is sleeved outside the plurality of lower heat exchange tubes (115) and is connected to the inducing part (201) through the upper transmission part (205), wherein the upper transmission part (205) is configured to enable the motion of the inducing part (201) to be transmitted to the plurality of lower heat exchange tubes (115) by bypassing the plurality of upper heat exchange tubes (114).

3. The condenser of claim 2, wherein:

the upper transmission part (205) comprises at least one transmission rod (215), and a space for the at least one transmission rod (215) to pass through is arranged in the array of the plurality of upper heat exchange tubes (114).

4. A condenser as claimed in claim 3, wherein:

the at least one transmission rod (215) comprises an elastic section (605), the elastic section (605) being made of an elastic material.

5. The condenser of claim 2, wherein:

go up transmission portion (205) including driving plate (501), be equipped with the several on driving plate (501) and dodge hole (511), several upper portion heat exchange tube (114) correspond and hold in the hole (511) are dodged to the several, wherein the size that hole (511) were dodged to the several is greater than respectively the size of the cross section of several upper portion heat exchange tube (114), so that the in-process of transmission part (202) vibration, several upper portion heat exchange tube (114) do not contact rather than the hole (511) of dodging that corresponds all the time.

6. The condenser of any one of claims 2 to 5, wherein:

the condenser (100) comprises a gas baffle (106), and the gas baffle (106) is arranged below the air inlet pipe (102);

the initiation component (201) comprises a vibration plate (203), one end (213) of the vibration plate (203) is connected with the air baffle plate (106), the vibration plate (203) is connected with the upper transmission part (205), and the vibration plate (203) can be driven by refrigerant steam flowing in from the air inlet pipe (102) to vibrate.

7. The condenser of claim 6, wherein:

the air baffle plate (106) comprises a bottom plate (214) extending parallel to the plurality of heat exchange tubes (113), and the vibration plate (203) is obliquely inclined upwards relative to the bottom plate (214) of the air baffle plate (106).

8. The condenser of any one of claims 2 to 5, wherein:

the condenser (100) comprises an air baffle plate (106), the air baffle plate (106) is arranged below the air inlet pipe (102), and a through hole (602) is formed in the air baffle plate (106);

the inducing member (201) includes a rotary blade (603), the rotary blade (603) is disposed in the through hole (602) through a rotary shaft (604) and connected to the upper transmission part (205) through the rotary shaft (604), wherein the rotary blade (603) is capable of rotating together with the rotary shaft (604) by being driven by refrigerant vapor flowing in from the intake pipe (102).

9. The condenser of claim 8, wherein:

the transmission component (202) further comprises a cam (601), wherein the cam (601) is connected with the rotating shaft (604), so that the cam (601) can rotate eccentrically along with the rotation of the rotating shaft (604);

the top of the upper transmission part (205) is provided with a receiving part (701), and the cam (601) is rotatably received in the receiving part (701), so that the eccentric rotation of the cam (601) can drive the upper transmission part (205) to move up and down.

10. The condenser of any one of claims 1 to 5, wherein:

the condenser (100) further comprises an overcooler (104), the overcooler (104) is arranged at the bottom of the accommodating space (111), and the transmission component (202) is supported by the overcooler (104).

Technical Field

The application relates to the technical field of condensers.

Background

The condenser is used as an important heat exchange component of a large and medium-sized water chilling unit and is of great importance to the performance of the unit. The condenser belongs to one type of heat exchanger, and a plurality of heat exchange tubes are arranged inside the condenser. Refrigerant vapor from the compressor is capable of exchanging heat with the plurality of heat exchange tubes within the condenser such that the refrigerant vapor is condensed from a gaseous state to a liquid state. Since the refrigerant vapor entering the condenser from the compressor is superheated, the high-temperature refrigerant vapor contacts the wall surface of the heat exchange tube below the saturation temperature thereof, and then forms film-like condensation on the outer wall of the heat exchange tube. The refrigerant liquid film formed by the refrigerant vapor on the outer wall of the heat exchange tube can increase the thermal resistance of the outer wall of the heat exchange tube and obstruct the heat exchange between the refrigerant vapor and the heat exchange tube, thereby reducing the heat exchange efficiency between the refrigerant vapor and the heat exchange tube.

Disclosure of Invention

An object of the present application is to provide a condenser, which can induce vibration of a part of heat exchange tubes inside the condenser by using an air flow impact energy of refrigerant vapor entering the condenser from a compressor, thereby reducing or removing a refrigerant liquid film attached to an outer wall of the part of heat exchange tubes, and solving a problem of heat exchange deterioration occurring in the condenser due to condensation of the liquid film on the outer wall of the heat exchange tubes.

In order to achieve the above object, the present application provides a condenser including a condenser case, an intake duct, a heat exchange tube group, and a vibration device. The interior of the condenser case forms an accommodation space. The air inlet pipe is arranged on the condenser shell, and the inside of the air inlet pipe is communicated with the fluid in the accommodating space. The heat exchange tube group is arranged in the accommodating space and comprises a plurality of heat exchange tubes. The vibration device is arranged in the accommodating space and comprises an initiating component and a transmission component. The inducing member is disposed in the accommodating space and is configured to be movable by being struck by refrigerant vapor flowing into the accommodating space from the intake pipe. The transmission component is connected to the initiation component and sleeved outside at least part of the plurality of heat exchange tubes, and the transmission component is configured to be capable of transmitting the motion of the initiation component to the at least part of the heat exchange tubes so as to cause the vibration of the at least part of the heat exchange tubes.

The condenser as recited in the preceding paragraphs, said plurality of heat exchange tubes comprises a plurality of upper heat exchange tubes and a plurality of lower heat exchange tubes, said plurality of upper heat exchange tubes being positioned above said plurality of lower heat exchange tubes. The transmission member includes an upper transmission part and a lower transmission part, the lower transmission part is sleeved outside the plurality of lower heat exchange tubes and is connected to the inducing member through the upper transmission part, wherein the upper transmission part is configured such that the motion of the inducing member can be transmitted to the plurality of lower heat exchange tubes bypassing the plurality of upper heat exchange tubes.

As the condenser described in the foregoing, the upper driving part includes at least one driving rod, and the array of the plurality of upper heat exchange tubes is provided therein with a space through which the at least one driving rod passes.

The condenser as described hereinbefore, said at least one transmission rod comprises an elastic section, said elastic section being made of an elastic material.

As before the condenser, go up transmission portion and include the driving plate, be equipped with the several on the driving plate and dodge the hole, several upper portion heat exchange tube correspondence is held the several dodges downtheholely, wherein the size that the hole was dodged to the several is greater than respectively the size of the cross section of several upper portion heat exchange tube, so that the in-process of transmission part vibration, several upper portion heat exchange tube does not contact rather than the hole of dodging that corresponds all the time.

The condenser as set forth in the foregoing, comprising an air baffle disposed below the intake pipe;

the inducing member includes a vibration plate, one end of the vibration plate is connected to the air blocking plate, the vibration plate is connected to the upper transmission portion, and the vibration plate is driven by the refrigerant vapor flowing in from the inlet pipe to vibrate.

As in the condenser described above, the air baffle includes a bottom plate extending parallel to the plurality of heat exchange tubes, and the vibration plate is inclined obliquely upward with respect to the bottom plate of the air baffle.

The condenser as set forth in the foregoing comprises a gas baffle disposed below the intake pipe, the gas baffle having a through hole therein. The inducing member includes a rotary blade disposed in the through hole by a rotary shaft and connected to the upper transmission part by the rotary shaft, wherein the rotary blade is capable of rotating together with the rotary shaft by being driven by refrigerant vapor flowing in from the intake pipe.

The condenser as set forth in the foregoing, the transmission member further includes a cam connected to the rotating shaft such that the cam can eccentrically rotate with the rotation of the rotating shaft; the top of the upper transmission part is provided with a receiving part, and the cam is rotatably received in the receiving part, so that the eccentric rotation of the cam can drive the upper transmission part to move up and down.

The condenser as set forth in the foregoing, further comprising a subcooler provided at a bottom of the accommodating space, the transmission member being supported by the subcooler.

The application sets up vibrating device in the condenser, and wherein vibrating device includes initiating component and drive disk assembly, and initiating component links with the drive disk assembly. The vibration device of the application utilizes the airflow pulsation of refrigerant vapor from a compressor to drive the initiation component to move, and transmits the motion energy of the initiation component to a part of heat exchange tubes in a condenser through the transmission component, so that the vibration of the part of heat exchange tubes is realized. The vibration of the heat exchange tube can accelerate the falling of the condensed refrigerant liquid film on the outer wall of the heat exchange tube, thereby playing the role of reducing or removing the liquid film on the outer wall of the heat exchange tube and improving the heat exchange efficiency of the heat exchange tube in the condenser.

Drawings

FIG. 1 is a schematic diagram of a condenser 100 to which embodiments of the present application are applicable;

fig. 2A shows an arrangement structure of a vibration device 200 of the first embodiment of the present application;

FIG. 2B is an enlarged view of FIG. 2A in the area of the vibration device 200;

fig. 3 is a radial cross-sectional view of the vibration device 200 shown in fig. 2A in the condenser 100;

fig. 4 is a radial sectional view of a vibration device 200 of a second embodiment of the present application in a condenser 100;

fig. 5 shows a partial structure of a vibration device 200 according to a third embodiment of the present application;

fig. 6 shows a perspective view of a vibration device 200 according to a fourth embodiment of the present application;

fig. 7 and 8 show two different connection structures of the cam 601 and the upper transmission portion 205 in the vibration device 200 of fig. 6, respectively.

Detailed Description

Various embodiments of the present application will now be described with reference to the accompanying drawings, which form a part hereof. It should be understood that although directional terms such as "front," "rear," "upper," "lower," "left," "right," and the like may be used herein to describe various example structural portions and elements of the application, these terms are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the embodiments disclosed herein can be arranged in a variety of orientations, these directional terms are used for purposes of illustration only and are not to be construed as limiting.

Fig. 1 is a schematic diagram of a condenser 100 to which embodiments of the present application are applicable. As shown in fig. 1, the condenser 100 is a shell-and-tube condenser, and includes a condenser shell 101, an intake pipe 102, a baffle 106, a heat exchange tube bank 103, a subcooler 104, a liquid outlet pipe 105, and a pair of tube sheets 107. The condenser case 101 is substantially cylindrical, and an accommodating space 111 is formed therein. The air trap 106, the heat exchange tube bank 103 and the subcooler 104 are all disposed in the accommodating space 111. The intake pipe 102 is also cylindrical and is provided at the top of the condenser case 101. The interior of the intake pipe 102 is in fluid communication with the accommodating space 111 of the condenser case 101, so that refrigerant vapor from a compressor (not shown) can enter the accommodating space 111 inside the condenser case 101 through the intake pipe 102.

The heat exchange tube set 103 includes a plurality of heat exchange tubes 113, and each heat exchange tube 113 has an elongated tubular shape. A plurality of heat exchange tubes 113 are arranged side by side, and the length direction of each heat exchange tube 113 coincides with the length direction of the condenser case 101, thereby forming an array of heat exchange tubes 113. The plurality of heat exchanging pipes 113 includes a plurality of upper heat exchanging pipes 114 and a plurality of lower heat exchanging pipes 115, and the plurality of upper heat exchanging pipes 114 are positioned above the plurality of lower heat exchanging pipes 115, so that the plurality of heat exchanging pipes 113 form upper and lower arrays. The heat exchange tube set 103 is provided to promote heat exchange of the refrigerant vapor in the accommodating space 111 of the condenser case 101, and the refrigerant vapor after heat exchange is condensed into a gas-liquid mixed state. A pair of tube plates 107 are respectively provided at both ends in the longitudinal direction of the condenser case 101, and are connected to both ends in the longitudinal direction of the plurality of heat exchange tubes 113. A plurality of heat exchange tubes 113 are fixedly disposed in the accommodating space 111 of the condenser case 101 through a pair of tube sheets 107.

The air baffle 106 is connected to the inner wall of the condenser case 101 and is fixedly disposed below the intake pipe 102. As shown in fig. 1, the air baffle 106 is located between the air inlet pipe 102 and the heat exchange pipe group 103 with a certain distance from both the air inlet pipe 102 and the heat exchange pipe group 103. The provision of the air baffle 106 in the condenser case 101 prevents the refrigerant vapor from the intake pipe 102 from directly striking the heat exchange tube group 103, thereby reducing damage to the heat exchange tube group 103 by the refrigerant vapor.

The subcooler 104 is disposed below the heat exchange tube bank 103 at the bottom of the accommodating space 111 of the condenser case 101. The liquid refrigerant condensed by the liquid outlet pipe 105 through the heat exchange of the heat exchange pipe group 103 moves downwards under the action of gravity, and then enters the subcooler 104. The liquid refrigerant is converted into a subcooled liquid after continuing heat exchange at the subcooler 104. The liquid outlet pipe 105 is disposed below the subcooler 104 at the bottom of the condenser housing 101. Subcooled refrigerant liquid after heat exchange in chiller 104 can exit condenser housing 101 through outlet pipe 105.

In the process of heat exchange of the refrigerant vapor with the heat exchange tube group 103, since the refrigerant vapor entering the inside of the condenser case 101 from the compressor through the intake tube 102 is superheated, when the high-temperature refrigerant vapor comes into contact with the outer walls of the heat exchange tubes 113 below the saturation temperature thereof, the refrigerant vapor is condensed in a film-like manner on the outer walls of the heat exchange tubes 113. As shown in fig. 1, since the refrigerant liquid film condensed on the outer wall of the plurality of heat exchange tubes 113 is dropped downward by gravity, the thickness of the refrigerant liquid film increases as the number of rows of the heat exchange tubes 113 increases, and the thickness of the refrigerant liquid film attached to the outer wall of the lower heat exchange tube 115 is greater than that of the refrigerant liquid film attached to the outer wall of the upper heat exchange tube 114. However, the refrigerant liquid film condensed on the outer wall of the heat exchange tube 113 has thermal conductive resistance, which decreases the heat exchange efficiency between the refrigerant vapor and the heat exchange tube 113, and the thicker the refrigerant liquid film, the greater the thermal conductive resistance. That is, the thicker the refrigerant liquid film condensed on the outer wall of the heat exchange tube 113, the lower the heat exchange efficiency of the heat exchange tube 113. It can be seen that the heat exchange efficiency of the plurality of lower heat exchange tubes 115 is low due to the thick refrigerant liquid film attached to the outer wall thereof.

Fig. 2A shows an arrangement structure of the vibration device 200 of the first embodiment of the present application, showing a positional relationship of the vibration device 200 with respect to the intake pipe 102, the air baffle 106, and the subcooler 104 in the condenser 100. Fig. 2B is an enlarged view of fig. 2A in the region of the vibration device 200. Fig. 3 is a radial sectional view of the vibration device 200 shown in fig. 2A in the condenser 100. In order to prevent excessive liquid refrigerant from adhering to the plurality of lower heat exchange tubes 115 to form a liquid film, and thus prevent the heat exchange performance of the condenser 100 from being degraded, the present application provides a vibration device 200 in the receiving space 111 inside the condenser 100. The vibration device 200 of the present embodiment is applied to the shell-and-tube condenser 100 in screw and centrifugal chiller units, and can utilize the discharge pulsation of the screw compressor or the discharge of the centrifugal compressor as a vibration source, avoiding the cost of additional vibrators.

As shown in fig. 2A, the vibration device 200 is disposed between the intake pipe 102 and the subcooler 104. The vibration device 200 includes an inducing member 201, a transmission member 202, and a supporting member 204. In the present embodiment, the inducing member 201 includes a vibration plate 203, and one end of the vibration plate 203 is connected to the gas barrier 106, so that the refrigerant vapor flowing toward the gas barrier 106 can impinge on the vibration plate 203. As shown in fig. 2B, the air baffle 106 includes a bottom plate 214 and two side plates 216. The bottom plate 214 is disposed in parallel with the extending direction of the plurality of heat exchange tubes 113, and is located right below the air intake duct 102. The bottom plate 214 has a longitudinal direction that coincides with the longitudinal direction of the condenser case 101, and two side plates 216 are connected to both side edges of the bottom plate 214 in the width direction. As shown in fig. 3, two side plates 216 extend obliquely upward from the bottom plate 214, respectively, and are attached to the inner wall of the condenser case 101. The above-described arrangement of the baffle 106 enables the floor 214 to be fixed directly below the intake pipe 102 so that refrigerant vapor from the intake pipe 102 flows directly to the floor 214. Since the entirety of the gas barrier 106 extends along the longitudinal direction of the condenser case 101, the gas barrier 106 can guide the refrigerant vapor to move toward the longitudinal direction of the condenser case 101. The vibration plate 203 is obliquely inclined with respect to the bottom plate 214 of the air baffle 106. One end 213 of the vibrating plate 203 is connected to the gas barrier 106, and the other end 217 is a free end. In the present embodiment, one end 213 of the vibration plate 203 is connected to one side 223 in the length direction of the bottom plate 214, so that the refrigerant vapor guided through the gas barrier 106 can impinge on the vibration plate 203. The vibration plate 203 is driven by the flow rate of the refrigerant vapor, and vibrates. In the first embodiment of the present application, the vibration plate 203 is used as the inducing member 201, and the inducing member 201 is driven to vibrate by the refrigerant vapor discharged from the compressor. In the embodiment of the present application, the vibration plate 203 is made of spring steel, which not only meets the requirement of high temperature environment inside the condenser 100, but also has certain rigidity and elasticity.

The transmission member 202 is connected with the inducing member 201 to transmit the vibration from the inducing member 201. As shown in fig. 2B and 3, the transmission member 202 includes an upper transmission portion 205 and a lower transmission portion 206. The upper transmission portion 205 is connected between the vibration plate 203 and the lower transmission portion 206, and can transmit vibration energy from the vibration plate 203 to the lower transmission portion 206. In the present embodiment, the upper transmission part 205 is a transmission rod 215, and the transmission rod 215 is made of a metal material capable of providing rigidity. The driving rod 215 is vertically disposed up and down perpendicular to the extending direction of the heat exchange tube group 103. One end of the transmission rod 215 is connected to the lower surface of the vibration plate 203, and the other end is connected to the lower transmission portion 206. The coupling arrangement between the transmission rod 215 and the vibration plate 203 helps to convert the vibration of the vibration plate 203 within a certain range of amplitude into the up-and-down motion of the transmission rod 215. As shown in fig. 3, the upper driving portion 205 is substantially located in the array of the plurality of upper heat exchange tubes 114 and does not contact any one of the upper heat exchange tubes 114; the lower transmission part 206 is substantially located at the array position of the plurality of lower heat exchange tubes 115 and is sleeved outside the plurality of lower heat exchange tubes 115. In order to adapt to the arrangement of the upper transmission part 205 among the plurality of upper heat exchange tube 114 arrays, the plurality of upper heat exchange tube 114 arrays are divided into left and right two sub-arrays 301, and a space is provided between the left and right two sub-arrays 301 to provide a space through which the transmission rod 215 passes. The provision of the spaces between the two sub-arrays 301 of upper heat exchange tubes 114 also allows for a downward flow channel for the refrigerant vapor to enter the lower heat exchange tubes 115 more easily, thereby reducing the amount of refrigerant deposited on the outer walls of the upper heat exchange tubes 114 and enhancing the heat exchange of the refrigerant vapor with the lower heat exchange tubes 115.

The lower transmission part 206 is substantially plate-shaped, is arranged along the radial direction of the condenser case 101, is perpendicular to the extending direction of the heat exchange tube group 103, and is substantially on the same plane as the upper transmission part 205. In the present embodiment, the plate surface of the lower transmission portion 206 is provided with a plurality of accommodating holes 218 arranged side by side. Each accommodating hole 218 penetrates through the thickness direction of the lower transmission part 206, the number of the accommodating holes 218 is the same as that of the lower heat exchange tubes 115, and the size and shape of the accommodating holes 218 are matched with the size and shape of the cross section of the lower heat exchange tubes 115. The above arrangement of the lower transmission part 206 enables each of the plurality of lower heat exchange tubes 115 to be received in a corresponding one of the receiving holes 218, so that the vibration energy of the lower transmission part 206 obtained from the vibration plate 203 can be transmitted to the plurality of lower heat exchange tubes 115. That is, the vibration of the vibration plate 203 can be transmitted to the lower heat exchanging pipes 115 bypassing the upper heat exchanging pipes 114, thereby driving the lower heat exchanging pipes 115 to vibrate up and down. Because the lower transmission part 206 directly drives the lower heat exchange tube 115 to vibrate, in order to ensure the vibration amplitude of the lower heat exchange tube 115, parameters such as the material, shape, size and the like of the lower transmission part 206 can be optimized and adjusted, so that the natural frequency of the lower transmission part 206 falls within the frequency range of the refrigerant steam airflow pulsation, the lower transmission part 206 can resonate with the compressor exhaust pulsation, and the liquid film attached to the outer wall of the heat exchange tube 113 is ensured to effectively fall off. In this embodiment, the amplitude of the vibration of the lower transmission portion 206 is about 1-2 mm. The up-and-down vibration of the plurality of lower heat exchange tubes 115 can cause the refrigerant liquid film attached to the outer walls of the plurality of lower heat exchange tubes 115 to drop downwards, thereby reducing the thickness of the liquid film on the outer walls of the lower heat exchange tubes 115 and improving the heat exchange efficiency of the plurality of lower heat exchange tubes 115. In some embodiments, the lower drive 206 may mount a receiving hole protector on the inner diameter of the receiving hole 218. The receiving hole protector is made of an elastic material and is connected between the receiving hole 218 and the lower heat exchanger tube 115 for increasing a contact area between the receiving hole 218 and the lower heat exchanger tube 115 received therein to reduce a shearing force of the receiving hole 218 to the lower heat exchanger tube 115 and to reduce a loss of the lower heat exchanger tube 115 due to vibration of the lower transmission part 206.

The support member 204 is disposed at the bottom of the lower transmission portion 206. As shown in fig. 2B and 3, the support member 204 includes two support rods 219, and each of the two support rods 219 extends downward from the bottom of the lower transmission part 206. The two support rods 219 are spaced apart by a distance approximately the same as the width of the supercooler 104, so that the driving part 202 of the vibration device 200 can be supported at both sides of the supercooler 104 by the two support rods 219. In some embodiments, the support member 204 may also be supported on the inner wall of the condenser casing 101. The support member 204 is configured to provide additional support and positioning for the vibration apparatus 200. in other embodiments, the vibration apparatus 200 may not include the support member 204.

Fig. 4 is a radial sectional view of a vibration device 200 of a second embodiment of the present application in a condenser 100. Similarly to the vibration device 200 of the first embodiment of the present application, the vibration device 200 of the second embodiment also includes an inducing member 201, a transmission member 202, and a supporting member 204. The structural arrangement of the triggering component 201, the supporting component 204, and the lower transmission part 206 in the transmission component 202 of the second embodiment is completely the same as that of the first embodiment, and reference is made to the description of the vibration device 200 of the first embodiment in this application, and details are not repeated here. Unlike the vibration device 200 of the first embodiment which employs one transmission rod 215 as the upper transmission part 205 of the transmission member 202, the upper transmission part 205 of the vibration device 200 of the second embodiment has two transmission rods 215. As shown in fig. 4, the two transmission rods 215 are vertically disposed and located on the same radial plane of the condenser casing 101, and have an upper end connected to the vibration plate 203 and a lower end connected to the lower transmission portion 206. The upper ends of the two transmission rods 215 are respectively connected to the same height of the lower surface of the vibration plate 203 and are respectively disposed at opposite side positions of the vibration plate 203 such that the two transmission rods 215 have the maximum interval therebetween. The relatively distant arrangement of the two transmission rods 215 helps to transmit the vibration from the vibration plate 203 to both sides of the lower transmission portion 206 arranged in the radial direction of the condenser case 101, and can effectively reinforce the vibration transmission of the upper transmission portion 205 to the vibration plate 203. In order to adapt the arrangement of the two transmission rods 215 in the plurality of upper heat exchange tube 114 arrays, the plurality of upper heat exchange tube 114 arrays are divided into three sub-arrays 301, and two gaps are arranged between the three sub-arrays 301 and are respectively used for providing spaces for the two transmission rods 215 to pass through. The two voids provided in the array of upper heat exchange tubes 114 of this embodiment provide channels for the refrigerant vapor to flow downwardly, enhancing heat exchange between the refrigerant vapor and the lower heat exchange tubes 115. The second embodiment also can transmit the vibration of the vibration plate 203 to the lower heat exchange tubes 115 bypassing the upper heat exchange tubes 114 for the structural arrangement of the upper transmission part 205, thereby driving the lower heat exchange tubes 115 to vibrate up and down.

Fig. 5 shows a part of the structure of a vibration device 200 according to a third embodiment of the present application. Similarly to the structure of the vibration device 200 of the second embodiment, the vibration device 200 of the third embodiment of the present application also adjusts the structure of the transmission member 202 on the basis of the vibration device 200 of the first embodiment, and therefore fig. 5 only shows the structure of the transmission member 202 and the support member 204 connected thereto in the vibration device 200 of the third embodiment. The structural arrangements of the triggering component 201, the supporting component 204, and the lower transmission part 206 in the transmission component 202 in the third embodiment are completely the same as those in the first embodiment, and refer to the description of the vibration device 200 in the first embodiment in the present application, and are not described again here. Unlike the vibration devices 200 of the first and second embodiments, each of which employs the transmission rod 215 as the upper transmission portion 205 of the transmission member 202, the upper transmission portion 205 of the vibration device 200 of the third embodiment is one transmission plate 501. As shown in fig. 5, the driving plate 501 is vertically disposed perpendicular to the extending direction of the heat exchange tube group 103, and the plane on which the driving plate 501 is located is substantially located on the radial surface of the condenser case 101. The transmission plate 501 is provided with a plurality of avoidance holes 511, and the number of the avoidance holes 511 is the same as that of the upper heat exchange tubes 114, so that the upper heat exchange tubes 114 can be correspondingly accommodated in the avoidance holes 511. Each of the relief holes 511 has a size greater than that of a cross-section of a corresponding one of the upper heat exchange tubes 114 received therein, so that the plurality of upper heat exchange tubes 114 are not in contact with the corresponding relief holes 511 at all times during vibration of the transmission member 202. That is, the vibration of the driving plate 501 does not affect the upper heat exchanging pipe 114. Therefore, the third embodiment can transmit the vibration of the vibrating plate 203 to the lower heat exchanging pipes 115 bypassing the upper heat exchanging pipes 114 while keeping the upper heat exchanging pipes 114 in the condenser casing 101 fully distributed for the upper transmission part 205, so as to drive the lower heat exchanging pipes 115 to vibrate up and down. In this embodiment, the inducing member 201 drives the lower transmission portion 206 to vibrate in an amplitude of about 1-2mm, so that the aperture of the avoiding hole 511 is set to be 1-2mm larger than the outer diameter of the heat exchanging pipe 113.

Fig. 6 shows a perspective view of a vibration device 200 according to a fourth embodiment of the present application. As shown in fig. 6, the vibration device 200 of the fourth embodiment includes an inducing member 201, a transmission member 202, and a supporting member 204. The overall structure of the air baffle 106 associated with the fourth embodiment vibrating device 200 is similar to the structure of the air baffle 106 associated with the first, second, and third embodiments, including a bottom plate 214 and two side plates 216. Wherein the bottom plate 214 is located right below the intake duct 102, and the two side plates 216 are obliquely inclined upward with respect to the bottom plate 214 and are attached to the inner wall of the condenser case 101. Unlike the air baffle 106 of the first, second, and third embodiments, the air baffle 106 of the fourth embodiment is provided with a through hole 602 and a mounting groove 608 on the bottom plate 214. In order to more clearly show the structural relationship between the bottom plate 214 and the inducing member 201, two side plates 216 connected to both sides of the bottom plate 214 are omitted in fig. 6, and the structure of the bottom plate 214 of the air blocking plate 106 is shown.

As shown in fig. 6, the through hole 602 of the bottom plate 214 is circular for receiving the inducing member 201 of the vibration device 200. The initiating part 201 comprises a rotating blade 603, the rotating blade 603 being shaped as a semi-circle. The shape and size of the semicircular rotary blade 603 match the shape and size of the through hole 602 of the bottom plate 214, and the circle corresponding to the semicircular rotary blade 603 is slightly smaller than the circle corresponding to the through hole 602, so that the rotary blade 603 can be accommodated in the through hole 602, and the semicircular rotary blade 603 and the circular through hole 602 are concentrically arranged. The initiating member 201 of the present embodiment comprises two rotating blades 603, in other embodiments, other numbers of rotating blades 603 may be arranged.

As shown in fig. 6, the mounting groove 608 is elongated and hollowed out in the thickness direction of the base plate 214. The mounting groove 608 is connected to the through hole 602, and the mounting groove 608 extends from the through hole 602 to one side 223 of the bottom plate 214 along the length direction. The extending direction of the mounting groove 608 on the bottom plate 214 is consistent with the length direction of the bottom plate 214, and the extension line of the mounting groove 608 on the through hole 602 can pass through the center of the circle of the through hole 602.

The transmission member 202 of the vibration device 200 includes a rotation shaft 604, a cam 601, an upper transmission portion 205, and a lower transmission portion 206. The rotation shaft 604 is disposed on a plane on which the base plate 214 is located, and the rotation shaft 604 is received in the through hole 602 and the mounting groove 608. One end of the rotating shaft 604 is rotatably connected to an edge of the through hole 602, and the rest of the rotating shaft 604 extends from the through hole 602 to the mounting groove 608 and continues from the mounting groove 608 to the outer side of the bottom plate 214. The other end of the rotating shaft 604 extending to the outside of the base plate 214 is connected to the cam 601 so that the kinetic energy of the rotating shaft 604 can be transmitted to the cam 601. As shown in fig. 6, since the extending direction of the mounting groove 608 on the bottom plate 214 coincides with the longitudinal direction of the bottom plate 214, the extending direction of the rotating shaft 604 mounted in the mounting groove 608 also coincides with the longitudinal direction of the bottom plate 214. That is, the extending direction of the rotating shaft 604 coincides with the axial direction of the condenser case 101. Since the extension line of the mounting groove 608 on the through hole 602 passes through the center of the circle where the through hole 602 is located, the rotation shaft 604 mounted in the mounting groove 608 can also pass through the center of the circle where the through hole 602 is located. The placement of the rotating shaft 604 in the through-hole 602 separates the through-hole 602 into two symmetrical semi-circular sub-through-holes. As shown in fig. 6, a rotation shaft 604 is connected to the rotary blade 603, and the two rotary blades 603 are symmetrically disposed with respect to the rotation shaft 604, so that the rotary blade 603 can be disposed in the through hole 602 through the rotation shaft 604, and the rotary blade 603 can rotate around the rotation shaft 604 in the through hole 602. When the rotary blades 603 are rotated to a certain position, the plane in which the rotary blades 603 are located can be flush with the air baffle 106. The above arrangement enables the rotary blade 603 to be simultaneously impacted by the flow of refrigerant vapor from the intake pipe 102, as with the air shield 106. When the refrigerant vapor flows toward the gas shield 106 and collides with the upper surface of the gas shield 106 and the rotary blade 603 installed in the through hole 602 of the gas shield 106, the rotary blade 603 is rotated together with the rotary shaft 604 by the refrigerant vapor. Since the rotating shaft 604 is connected to the cam 601, the rotation of the rotating blade 603 can simultaneously rotate the rotating shaft 604 and the cam 601.

In the fourth embodiment of the present application, a through hole 602 is provided in the bottom plate 214 of the air baffle 106, and a set of rotating blades 603 is correspondingly provided in the through hole 602. Other numbers of through-holes 602, such as two, three, etc., may be provided in the bottom plate 214 in other embodiments. A set of rotating blades 603 is disposed in each of the through holes 602, so that the vibration device 200 of the fourth embodiment can drive the rotating shaft 604 and the cam 601 of the transmission member 202 to move by the rotation of the sets of rotating blades 603.

As shown in fig. 6, the cam 601 is formed in a substantially circular disk shape and is connected to an end portion of the rotating shaft 604 on the side extending from the bottom plate 214. The position where the cam 601 is connected to the rotating shaft 604 is located on the left side surface 607 of the cam 601. The left side surface 607 is substantially circular, and the end of the rotating shaft 604 is offset from the center of the circle where the left side surface 607 is located at the connecting position of the left side surface 607 of the cam 601. When the rotating shaft 604 is rotated by the rotating blade 603, the cam 601 is eccentrically connected to the rotating shaft 604 to rotate the cam 601 eccentrically.

The upper transmission part 205 is vertically disposed in the accommodation space 111 of the condenser case 101, and the upper transmission part 205 is located below the cam 601. The connection between the upper transmission part 205 and the cam 601 is configured to convert the rotational movement of the cam 601 into the up-and-down movement of the upper transmission part 205. As shown in fig. 6, the upper transmission part 205 is a transmission rod 215, and the transmission rod 215 has a circular rod shape and is connected between the cam 601 and the lower transmission part 206. The transmission rod 215 includes an elastic section 605, and when the transmission rod 215 moves up and down, the elastic section 605 is arranged to amplify the movement amplitude of the transmission rod 215, so that the lower transmission part 206 obtains larger kinetic energy. In this embodiment, the elastic section 605 is a spring section, and in other embodiments, the elastic section 605 may be made of other elastic materials.

Fig. 7 and 8 show two connection structures of the cam 601 and the upper transmission portion 205 in the vibration device 200 of fig. 6, respectively. The vibration device 200 of the fourth embodiment can realize the kinetic energy transmission between the cam 601 and the upper transmission portion 205 by using either one of the structures of fig. 7 and 8.

Fig. 7 shows a first structure in which the cam 601 is connected to the upper transmission portion 205. As shown in fig. 7, the left side surface 607 and the right side surface 609 of the cam 601 are both flat. The top of the upper transmission part 205 is provided with a receiving part 701, and the receiving part 701 is a groove 610 recessed downward from the top surface of the upper transmission part 205. The inner walls of the groove 610 are also flat, corresponding to the flat configuration of the left and right surfaces of the cam 601. The shape and size of the groove 610 is adapted to the shape and size of the cam 601 so that the lower portion of the cam 601 can be received in the groove 610. During the eccentric rotation of the cam 601, the lower portion of the cam 601 is changed in height, but the lower portion of the cam 601 is always received in the groove 610 in any case. That is, during the eccentric rotation of the cam 601, the lower portion of the cam 601 always abuts against the top portion of the upper transmission portion 205, and applies a downward pressure to the receiving portion 701 of the upper transmission portion 205. Even when the lower portion of the cam 601 moves to a higher position in the process of up and down, the cam 601 abuts on the top of the upper transmission portion 205. As can be seen in fig. 6, the provision of the resilient section 605 in the upper transmission 205 ensures that the upper transmission 205 is always in a compressed state. As shown in fig. 7, the provision of the groove 610 can prevent the cam 601 from slipping off the top end of the upper transmission portion 205 during eccentric rotation. When the cam 601 is driven to perform eccentric motion by the rotating shaft 604, the driving force of the cam 601 abutting against the top of the upper transmission part 205 can drive the upper transmission part 205 to move up and down.

Fig. 8 shows a second structure in which the cam 601 is connected to the upper transmission portion 205. As shown in fig. 8, the cam 601 in the second structure is provided with a flange 611 around the outer circumference position. The flange 611 protrudes from the left and right side surfaces 607 and 609 of the cam 601, respectively, so that neither the left and right side surfaces 607 and 609 are planar. The top of the upper transmission part 205 is provided with a receiving part 701, and the receiving part 701 is a groove 610 recessed downward from the top surface of the upper transmission part 205. The inner walls of the left and right sides of the groove 610 are respectively provided with stoppers 801 at the tip positions of the upper power transmission portion 205 in conformity with the structure of the flange 611 formed around the outer periphery of the cam 601. The two blocking members 801 respectively extend from the inner walls of the left and right sides of the groove 610, and a space is formed between the two blocking members 801, so that an accommodating space for the cam 601 can be provided. The shape and size of the groove 610 is adapted to the shape and size of the cam 601 so that the lower portion of the cam 601 can be received in the groove 610. When the lower portion of the cam 601 is received in the groove 610, the two stops 801 at the top of the upper transmission 205 rest on the flange 611 of the cam 601 received in the groove 610. During the eccentric rotation of the cam 601, the lower part of the cam 601 is constantly changing height, but in any case is always housed in the groove 610, thanks to the limiting action of the two stops 801 on the flange 611 of the cam 601. That is, during the eccentric rotation of the cam 601, when the lower portion of the cam 601 is located at a higher position, the upper end of the flange 611 of the cam 601 applies an upward pulling force to the two stoppers 801 of the upper transmission part 205, and the two stoppers 801 of the upper transmission part 205 block the flange 611 of the cam 601 from moving further upward, thereby preventing the cam 601 from slipping out of the receiving part 701 of the upper transmission part 205. When the lower portion of the cam 601 is located at a lower position, the lower portion of the cam 601 abuts against the top of the upper transmission portion 205, and the left and right side walls of the groove 610 are configured to prevent the cam 601 from slipping off the top end of the upper transmission portion 205. With the second structure in which the cam 601 is connected to the upper transmission portion 205, stable connection between the cam 601 and the upper transmission portion 205 can be ensured without the cam 601 constantly applying downward pressure to the upper transmission portion 205. In this embodiment, the elastic section 605 may not be provided in the upper transmission portion 205. As shown in fig. 8, due to the connection relationship between the cam 601 and the upper transmission part 205, when the cam 601 is driven by the rotating shaft 604 to perform an eccentric motion, the cam 601 can cause the upper transmission part 205 to move up and down.

As shown in fig. 6, in order to further ensure the connection between the cam 601 and the upper transmission part 205 and prevent the upper transmission part 205 from having a large vibration amplitude in the horizontal direction, the vibration device 200 of the fourth embodiment is sleeved with a stopper 606 at the outer side of the transmission rod 215. As shown in fig. 6, the stopper 606 is in the shape of a rectangular collar, and the stopper 606 is fixedly attached to the inner wall of the condenser case 101 by a connecting member (not shown). The movement range of the driving rod 215, which is limited by the limiting device 606 outside the driving rod 215, is slightly larger than the outer diameter of the driving rod 215, so that the driving rod 215 can only move under the limiting action of the limiting device 606 in the horizontal direction, and the possibility that the driving rod 215 is separated from the connection of the cam 601 is greatly reduced.

The arrangement of the lower transmission part 206 and the supporting component 204 at the bottom of the lower transmission part 206 of the vibration device 200 of the fourth embodiment is identical to that of the first, second and third embodiments, and therefore, the description thereof is omitted. The vibration device 200 of the fourth embodiment is provided with a rotatable rotary blade 603 as an inducing member 201 on the air baffle 106. When the refrigerant vapor hits the air baffle 106 from top to bottom, the rotating blades 603 are driven by the refrigerant vapor to rotate the rotating shaft 604. The rotation of the rotating shaft 604 is then transmitted to the cam 601, and the cam 601 eccentrically connected to the rotating shaft 604 is eccentrically rotated by the rotating shaft 604, so that the lowest point of the cam 601 is suddenly moved up and down and periodically reciprocated. Since the lower portion of the cam 601 is rotatably received in the receiving portion 701 at the top of the upper transmission portion 205, the upper transmission portion 205 is reciprocated up and down by the driving force from the cam 601 as the lowest point of the cam 601 is reciprocated up and down. That is, as the upper transmission part 205 reciprocates up and down, the lower transmission part 206 connected below the upper transmission part 205 is also driven to reciprocate up and down, so as to drive the plurality of heat exchange tubes 113 sleeved in the lower transmission part 206 to vibrate up and down. The vibration device 200 of the fourth embodiment converts the rotational motion of the rotary blade 603 into the up-and-down reciprocating motion by the crank link mechanism of the transmission member 202.

Various embodiments of the present application provide a plurality of circular receiving holes 218 in the lower transmission portion 206, and each receiving hole 218 is provided to receive one heat exchange pipe 113 of the plurality of lower heat exchange pipes 115. In other embodiments, a plurality of elongated receiving holes 218 may be disposed in the lower transmission portion 206. Each elongated receiving hole 218 can simultaneously receive a plurality of heat exchange tubes 113 in the same row in the plurality of lower heat exchange tubes 115, as long as the lower transmission part 206 can be sleeved outside the plurality of lower heat exchange tubes 115, and the plurality of lower heat exchange tubes 115 are driven by the lower transmission part 206 to vibrate.

The vibration device 200 of the present application utilizes the discharge pulsation of the compressor to excite the initiation member 201 to move. The present application also employs a crank-link structure in the vibration device 200 to convert the motion of the inducing member 201 into the up-and-down motion of the lower transmission part 206. The up-and-down movement of the lower transmission part 206 provides a vibration source for the part of the heat exchange pipe 113 sleeved in the lower transmission part 206, thereby driving the part of the heat exchange pipe 113 to vibrate up and down along with the lower transmission part 206. The vibration of part of the heat exchange tubes 113 can promote the falling of the refrigerant liquid film attached to the outer surface of the heat exchange tubes 113, thereby reducing the thickness of the liquid film on the outer wall of the heat exchange tubes 113 and improving the heat exchange efficiency of the heat exchange tube set 103. Since the thickness of the liquid film attached to the outer wall of the heat exchange tube 113 disposed below is thicker than the thickness of the liquid film attached to the outer wall of the heat exchange tube 113 disposed above, various embodiments of the present application are directed to portions of the heat exchange tube 113 disposed at the middle and lower portions of the condenser case 101, i.e., the lower heat exchange tube 115. The vibration device 200 can more efficiently use the impact energy of the refrigerant vapor only by the design of the lower heat exchange tube 115, and improve the situation that the thermal resistance at the outer side of the lower heat exchange tube 115 is too large due to the fact that the liquid film condensed on the outer wall of the lower heat exchange tube 115 is too thick.

The vibration device 200 of the embodiment of the present application is suitable for the shell-and-tube condenser 100 in screw-type and centrifugal chiller units, and is particularly suitable for screw-type chiller units. The discharge of the screw compressor is periodic pulsation discharge because the volume change speed of the rotor cavity of the screw compressor is periodically changed. The exhaust frequency of the screw compressor can reach 40 Hz-300 Hz, and when the screw unit operates in a variable frequency mode, the exhaust pulsation frequency of the normal operation is 90 Hz-300 Hz. In some embodiments, the thickness and shape of the lower transmission part 206 may be designed such that the natural frequency of the vibration falls within the range of 40Hz to 90 Hz. When the screw compressor normally operates, the pulsation frequency of the refrigerant vapor does not cause resonance of the lower transmission portion 206, and only when the screw compressor is not in a normal operation state, the lower transmission portion 206 can generate resonance, thereby realizing vibration with a large vibration amplitude. In some embodiments, the lower transmission 206 may be configured to: the lower transmission part 206 drives the heat exchange pipe 113 to vibrate only when the lower transmission part 206 resonates with the discharge pulsation of the compressor. This can be accomplished by adjusting the size of the receiving hole 218 of the lower drive 206. The arrangement can reduce the amount of liquid film attached to the outer wall of the lower heat exchange tube 115 and reduce the influence of the vibration of the lower heat exchange tube 115 on the function and structure of the condenser 100. That is, in this embodiment, the vibration overnight function of the vibration device 200 does not need to be performed all the time, but only needs to be performed periodically with the operation of the screw compressor, thereby reducing the influence of vibration on the heat exchange pipe 113 while ensuring the liquid removal effect. It should be noted that the natural frequency of the optimized design of the lower transmission part 206 should not be equal to the natural frequency of the heat exchange pipe 113 to avoid causing the heat exchange pipe 113 to resonate.

When the vibration device 200 of the embodiment of the present application is applied to the condenser 100 in the screw chiller, the vibration device 200 may be installed as follows: after the water chilling unit operates for 3 hours, the control logic reduces the exhaust frequency of the screw compressor to 40 Hz-90 Hz. At this time, the exhaust pipe outputs exhaust pulsation of 40Hz to 90Hz, which drives the initiation component 201 to move. The motion of the inducing component 201 is transmitted to the transmission component 202 through the crank linkage structure, so that the lower transmission part 206 obtains the pulsation in the frequency range of 40 Hz-90 Hz. When the natural frequency of the lower transmission part 206 is consistent with the discharge frequency of the compressor, the lower transmission part 206 generates resonance to drive the lower heat exchange tube 115 to vibrate, so that the liquid film attached to the outer surface of the lower heat exchange tube 115 falls off. After 10 minutes, the control logic raises the discharge frequency of the screw compressor to the normal operating frequency, at which time the discharge frequency of the compressor avoids the natural frequency of the lower transmission 206, the lower transmission 206 no longer resonates with the discharge pulsation of the compressor, and the lower heat exchange tube 115 is in a stationary state. In this embodiment, the vibration device 200 does not work in the normal operation mode of the water chilling unit for 3 hours, and the vibration device 200 drives the lower heat exchange pipe 115 to vibrate only in the abnormal operation mode of the water chilling unit for 10 minutes, so as to realize the vibration liquid removal function. That is, the vibration device 200 operates for 10 minutes every 3 hours of the normal operation of the water chiller, and periodically reduces or removes the liquid film attached to the outer wall of the lower heat exchange pipe 115. The above operation mode of the vibration device 200 can realize the liquid removal function periodically in the whole operation process of the water chilling unit, and hardly bring additional influence on the normal operation of the water chilling unit. In other embodiments, the vibration device 200 may employ other liquid removal periodic patterns.

While only certain features of the application have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the application.