CN215638953U - Heat exchanger and water chilling unit - Google Patents

Abstract

The application provides a heat exchanger and cooling water set. The heat exchanger includes a shell, a plurality of heat exchange tubes and a distributor. The shell comprises a heat exchange cavity, a first communicating port, a second communicating port and a third communicating port, wherein the first communicating port, the second communicating port and the third communicating port are communicated with the heat exchange cavity, the first communicating port and the third communicating port are arranged at the bottom of the shell, and the second communicating port is arranged at the top of the shell. A plurality of heat exchange tubes are parallelly penetrated in the heat exchange cavity. The distributor is arranged in the heat exchange cavity and assembled at the bottoms of the heat exchange tubes, the distributor comprises a first cavity and a second cavity which are communicated with each other, the first cavity is communicated with the first communication port, and the second cavity is communicated with the heat exchange cavity. The water chilling unit comprises the heat exchanger. Through the first cavity and the second cavity that set up the distributor, make the refrigerant intensive mixing that gets into in the first cavity in order to form stable flow state to make the refrigerant in the inflow heat transfer cavity more even, guarantee a plurality of heat exchange tubes and refrigerant contact even, thereby guarantee that the heat transfer is even, promote heat exchange efficiency.

Description

Heat exchanger and water chilling unit

Technical Field

The application relates to the technical field of water chilling units, in particular to a heat exchanger and a water chilling unit.

Background

The heat exchanger is an energy-saving device for realizing heat transfer between materials between two or more than two fluids with different temperatures, and is also one of main devices for improving the energy utilization rate. The heat exchanger includes an evaporator and a condenser. Wherein, the evaporator evaporates the liquid substance into the gaseous substance. The condenser condenses the gaseous matter into liquid matter. Refrigerant in the heat exchanger in the related art is unevenly distributed, and heat exchange efficiency is affected.

SUMMERY OF THE UTILITY MODEL

The application provides a promote heat exchange efficiency's heat exchanger and cooling water set.

The application provides a heat exchanger, includes:

the shell comprises a heat exchange cavity, and a first communication port, a second communication port and a third communication port which are communicated with the heat exchange cavity, wherein the first communication port and the third communication port are arranged at the bottom of the shell, and the second communication port is arranged at the top of the shell;

the heat exchange tubes are parallelly penetrated in the heat exchange cavity; and

the distributor, set up in the heat transfer cavity, and assemble in the bottom of a plurality of heat exchange tubes, the distributor includes first cavity and the second cavity of mutual intercommunication, first cavity with first intercommunication mouth intercommunication, the second cavity with the heat transfer cavity intercommunication, the third intercommunication mouth is as the oil return opening of evaporimeter.

Optionally, in the cooling mode, the heat exchanger is used as an evaporator, the first communication port is used as a gas-liquid two-phase refrigerant inlet of the evaporator, and the second communication port is used as a gas refrigerant outlet of the evaporator.

Optionally, the distributor includes a bottom plate, a first top plate assembled above the bottom plate, and a first end plate and a second end plate assembled at two ends of the bottom plate and the first top plate, the bottom plate, the first top plate, the first end plate, and the second end plate together enclose the first cavity, the first top plate is provided with a plurality of first distribution holes, and the second cavity is communicated with the first cavity through the plurality of first distribution holes.

Optionally, the distributor further includes a second top plate, the second top plate is assembled above the first top plate, and a space is left between the second top plate and the first top plate, the second top plate, and the second end plate together enclose the second cavity, the second top plate is provided with a plurality of second distribution holes, and the heat exchange cavity is communicated with the second cavity through the plurality of second distribution holes.

Optionally, the length of the second top plate is smaller than that of the first top plate, wherein one end of the second top plate is assembled with the second end plate, a space is left between the other end of the second top plate and the first top plate to form a fourth communication port, and the fourth communication port is communicated with the heat exchange cavity.

Optionally, the first communicating port is located at a side close to the fourth communicating port, and is communicated with the first cavity.

Optionally, the second communication port is located above the distributor and on a side away from the fourth communication port.

Optionally, the plurality of first dispensing holes and the plurality of second dispensing holes are arranged in a staggered manner in the height direction.

Optionally, the heat exchanger further includes an air suction baffle assembled at the top of the housing, the top of the air suction baffle is provided with a plurality of air collection ports facing the top of the housing, and the flow areas of the air collection ports are sequentially increased from the direction close to the second communication port to the direction away from the second communication port.

Optionally, the length of the dispenser is less than the length of the housing.

Optionally, in the heating mode, the heat exchanger is used as a condenser, the condenser includes a fifth communication port provided in the casing, and the fifth communication port is provided at the bottom of the casing and is disposed close to the first communication port with respect to the third communication port; the second communication port serves as a gas refrigerant inlet of the condenser, and the fifth communication port serves as a liquid refrigerant outlet of the condenser.

Optionally, the condenser further comprises a suction baffle assembled at the top of the shell, a gas passage is arranged at the end of the suction baffle, and the second communication port is communicated with the heat exchange cavity through the gas passage.

Optionally, the condenser further includes an impingement plate, and the impingement plate is assembled at the bottom of the suction baffle and located under the second communication port.

The application also provides a water chilling unit, which comprises the heat exchanger in any one of the above items.

The application provides a distributor of heat exchanger, including the first cavity and the second cavity that communicate each other, first cavity and first intercommunication mouth intercommunication, second cavity and heat transfer cavity intercommunication, so set up, make the refrigerant intensive mixing that gets into in the first cavity in order to form stable flow state to make the refrigerant in the inflow heat transfer cavity more even, guarantee that a plurality of heat exchange tubes and refrigerant contact are even, thereby guarantee that the heat transfer is even, promote heat exchange efficiency.

Drawings

FIG. 1 is a schematic cross-sectional view of one embodiment of a heat exchanger of the present application;

FIG. 2 is a schematic end view of the heat exchanger shown in FIG. 1;

FIG. 3 is a schematic top view of the bottom plate of the distributor of the heat exchanger shown in FIG. 1;

FIG. 4 is a schematic end view of the bottom plate of the distributor of the heat exchanger shown in FIG. 3;

FIG. 5 is a schematic top view of a first top plate of the distributor of the heat exchanger shown in FIG. 1;

FIG. 6 is a schematic end view of an embodiment of a first top plate of the distributor of the heat exchanger shown in FIG. 5;

FIG. 7 is a schematic end view of another embodiment of the first top plate of the distributor of the heat exchanger shown in FIG. 5;

FIG. 8 is a schematic top view of a second head plate of the distributor of the heat exchanger shown in FIG. 1;

FIG. 9 is a schematic end view of an embodiment of a second top plate of the distributor of the heat exchanger shown in FIG. 8;

FIG. 10 is a schematic end view of another embodiment of a second top plate of the distributor of the heat exchanger shown in FIG. 8;

FIG. 11 is a schematic view of an embodiment of a first end plate of the distributor of the heat exchanger shown in FIG. 1;

FIG. 12 is a schematic view of another embodiment of a first end plate of the distributor of the heat exchanger shown in FIG. 1;

FIG. 13 is a schematic front view of a suction baffle of the heat exchanger of FIG. 1;

FIG. 14 is a schematic end view of an embodiment of a suction baffle of the heat exchanger shown in FIG. 13;

FIG. 15 is a schematic end view of another embodiment of a suction baffle of the heat exchanger shown in FIG. 13;

FIG. 16 is a schematic top view of an embodiment of a impingement plate of the heat exchanger shown in FIG. 1;

FIG. 17 is a schematic end view of the impingement plate of the heat exchanger shown in FIG. 16;

FIG. 18 is a schematic top view of another embodiment of a impingement plate of the heat exchanger shown in FIG. 1;

figure 19 is a schematic end view of the impingement plate of the heat exchanger of figure 18.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. "connected" or "coupled" and similar terms are not restricted to physical or mechanical connections and may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The application provides a heat exchanger and cooling water set. The heat exchanger and the water chiller according to the present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 and 2, a heat exchanger 10 of an embodiment of the present application includes a shell 100, a plurality of heat exchange tubes 200, and a distributor 300. The shell 100 is used for accommodating a plurality of heat exchange tubes 200 and a distributor 300, the distributor 300 is used for conveying refrigerant into the shell 100, and a circulating medium is stored in tubes of the plurality of heat exchange tubes 200 and used for exchanging heat with the refrigerant in the shell 100. In some embodiments, the refrigerant delivered by the distributor 300 into the shell 100 may be a gas-liquid two-phase refrigerant, and the circulating medium may be water.

Specifically, shell 100 comprises a shell and tube shell. Wherein, the shell-and-tube shell comprises a main shell 101, tube sheets 102 arranged at both ends of the main shell 101, and a first water chamber 103 and a second water chamber 104 fixed to the tube sheets 102 and connected with a plurality of heat exchange tubes 200.

In this embodiment, first water chamber 103 may serve as a water supply chamber, and second water chamber 104 may serve as a water return chamber. A partition 105 is provided in the first water chamber 103 to divide a space in the first water chamber 103 into an inlet chamber 106 and an outlet chamber 107. In some embodiments, the shell-and-tube shell further comprises an inlet tube 108 and an outlet tube 109, the inlet tube 108 communicating with the inlet chamber 106 and the outlet tube 109 communicating with the outlet chamber 107. The heat exchange tube 200 located in the lower region is communicated between the water inlet chamber 106 and the second water chamber 104, and the heat exchange tube 200 located in the upper region is communicated between the second water chamber 104 and the water outlet chamber 107. So arranged, it is used to ensure the normal circulation of water in the plurality of heat exchange tubes 200. In other embodiments, the first water chamber 103 can serve as a water supply chamber, the second water chamber 104 can serve as a water outlet chamber, and the plurality of heat exchange tubes 200 are connected between the water inlet tube 108 and the water outlet tube 109.

A heat exchange cavity 1011, and a first communication port 110, a second communication port 111, and a third communication port 119 that communicate with the heat exchange cavity 1011 are formed in the main housing 101, the first communication port 110 and the third communication port 119 are provided at the bottom of the housing 100, and the second communication port 111 is provided at the top of the housing 100. In some embodiments, the first communication port 110 may be a gas-liquid two-phase refrigerant inlet, the second communication port 111 may be a gas refrigerant outlet, and the third communication port 119 serves as an oil return port of the evaporator. In other embodiments, the second communication port 111 may be a gaseous refrigerant outlet.

A plurality of heat exchange tubes 200 are parallelly arranged in the heat exchange cavity 1011. In the present embodiment, the plurality of heat exchange tubes 200 communicate the first water chamber 103 and the second water chamber 104, and are arranged to extend in the axial direction of the tube-shaped housing. In some embodiments, the plurality of heat exchange tubes 200 are arranged side by side along the radial direction of the shell 100, and two adjacent rows of heat exchange tubes 200 are arranged in a staggered manner, so that the heat exchange between the heat exchange tubes 200 and the refrigerant is increased, and thus the heat exchange performance of the heat exchanger 10 is improved.

In some embodiments, the housing 100 further includes a tube support assembly 112, the tube support assembly 112 including a tube support plate 113 and a fixing assembly 114 for fixing the tube support plate 113. Wherein a tube support plate 113 extends upward from the bottom of the case 100 to surround the outside of the plurality of heat exchange tubes 200 for supporting the plurality of heat exchange tubes 200. The fixing member 114 is used to assemble the tube supporting plate 113 to the heat exchange tube 200.

In some embodiments, the securing assembly 114 includes a baffle 115, a tie rod 116, a nut 117, and a pipe clamp 118. Wherein the baffle 115 is disposed on the inner wall of the housing 100 (as shown in fig. 2) for providing a support surface for supporting the tube support plate 113 to prevent the tube support plate 113 from colliding with the inner wall of the housing 100. The pull rod 116 is used for connecting the tube supporting plate 113, and is fixed by the nut 117, so that the plurality of heat exchange tubes 200 are collected in the tube supporting plate 113. The tube support plate 113 and the abutting heat exchange tube 200 are fixed by a ferrule 118. In other embodiments, the fixing assembly 114 may be other components, and is not limited in this application.

In some embodiments, the tube support plate 113 is assembled to a central region of the plurality of heat exchange tubes 200. Because the plurality of heat exchange tubes 200 are internally provided with the circulating medium, the influence of the bearing force of the circulating medium on the middle areas of the plurality of heat exchange tubes 200 is large, and therefore, the tube support plates 113 are assembled in the areas of the plurality of heat exchange tubes 200 opposite to the middle areas at intervals, so that the influence of the gravity of the heat exchange tubes 200 is reduced, and the deformation of the heat exchange tubes 200 is avoided.

Further, the distributor 300 is disposed in the heat exchange cavity 1011 and assembled at the bottom of the plurality of heat exchange tubes 200, the distributor 300 includes a first cavity 301 and a second cavity 302 which are communicated with each other, the first cavity 301 is communicated with the first communication port 110, and the second cavity 302 is communicated with the heat exchange cavity 1011. In some embodiments, the dispenser 300 further includes a dispenser inlet connector 303 disposed corresponding to the first communication port 110 and connected to the first communication port 110. When the first communicating port 110 is a gas-liquid two-phase refrigerant inlet, the first communicating port is communicated with the first cavity 301, so that the refrigerant entering the first cavity 301 is fully mixed to form a stable flow state, the refrigerant flowing into the heat exchange cavity 1011 is more uniform, the plurality of heat exchange tubes 200 are uniformly contacted with the refrigerant, the heat exchange uniformity is ensured, and the heat exchange efficiency is improved.

In some embodiments, the plurality of heat exchange tubes 200 are arranged at equal intervals, so that the heat exchange uniformity can be ensured. In some other embodiments, the plurality of heat exchange tubes 200 are arranged at a plurality of intervals. So set up, can increase heat transfer area, promote heat exchange efficiency.

In some embodiments, heat exchanger 10 includes a cooling mode and a heating mode. Wherein the heat exchanger 10 functions as an evaporator in the cooling mode. The evaporator is used for achieving the purpose of refrigeration by utilizing the fact that refrigerant is evaporated at low pressure, converted into gas refrigerant and absorbing heat of a cooled medium (such as cold water). The first communication port 110 serves as a gas-liquid two-phase refrigerant inlet of the evaporator, and the second communication port 111 serves as a gas refrigerant outlet of the evaporator. The refrigerant enters the first cavity 301 and the second cavity 302 in sequence through the first communication port 110, and has a certain flow speed in the process that the first cavity 301 flows into the second cavity 302, so that the gas-liquid two-phase refrigerant can be fully mixed to form a stable flow state. In this process, part of the lubricating oil in the liquid refrigerant is discharged to the compressor through the third communication port 119 (oil return port), thus ensuring the normal operation of the entire water chiller.

As shown in fig. 1 to 12, the distributor 300 includes a bottom plate 304, a first top plate 305 assembled above the bottom plate 304, and a first end plate 306 and a second end plate 307 assembled at two ends of the bottom plate 304 and the first top plate 305, wherein the bottom plate 304, the first top plate 305, the first end plate 306, and the second end plate 307 jointly enclose a first cavity 301. In some embodiments, the first communication opening 110 is disposed in the bottom plate 304.

In some embodiments, the bottom plate 304 further has a plurality of first engaging slots 308 for engaging with the first top plate 305, the edge of the first top plate 305 has a plurality of first protrusions 309 corresponding to the plurality of first engaging slots 308, and the plurality of first protrusions 309 are engaged with the plurality of first engaging slots 308, so that the first top plate 305 is assembled on the top of the bottom plate 304.

In the embodiment shown in fig. 4, the bottom surface of the bottom plate 304 is a cambered surface structure, so that the space at the bottom of the casing 100 can be effectively utilized, the space inside the distributor 300 is increased, the bottom plate is attached to the bottom of the casing 100, and the bottom plate is fixed to the inner wall of the casing by welding, so that the fixing stability is better. In some embodiments, a plurality of first card slots 308 are provided on a long side of the backplane 304.

In some embodiments, the end of the first top plate 305 is provided with a plurality of second protrusions 310, the second end plate 307 is provided with second locking slots 311 (as shown in fig. 11 or fig. 12) corresponding to the plurality of second protrusions 310, and the plurality of second protrusions 310 are in locking fit with the plurality of second locking slots 311, so that the end of the first top plate 305 is assembled to the second end plate 307. In some embodiments, a plurality of second protrusions 310 are disposed on the short side of the first top plate 305 and connected to the second end plate 307.

In some embodiments, the first top plate 305 is provided with a plurality of first distribution holes 312, and the second cavity 302 communicates with the first cavity 301 through the plurality of first distribution holes 312. With this arrangement, the refrigerant in the first cavity 301 enters the second cavity 302 through the first distribution holes 312, and the plurality of first distribution holes 312 are arranged to perform a gas-liquid distribution function due to the high pressure of the refrigerant entering the first cavity 301. In addition, in the process that the gas-liquid two-phase refrigerant slowly enters the first cavity 301, part of the gas refrigerant can be discharged to the second cavity 302 through the first distribution holes 312 and discharged through the second communication port 111, so that the gas-liquid two-phase refrigerant can be more uniformly mixed.

In some embodiments, the first dispensing aperture 312 may be a circular or triangular or square aperture. In some embodiments, the first dispensing apertures 312 may be different sizes or the same size. And are not limited in this application. In this embodiment, the first dispensing orifice 312 is circular and has a diameter in the range of 2mm to 6 mm. For example, the diameter of the first dispensing orifice 312 may be 2mm or 3mm or 4mm or 5mm or 6 mm.

In some embodiments, the first top panel 305 includes a plurality of first support plates 3051. In the embodiment shown in fig. 6, the first top plate 305 includes three first support plates 3051, and the first support plate 3051 disposed at the bottom of the first top plate and two adjacent first support plates 3051 form a first included angle α 1. Wherein the first included angle alpha 1 is within an angle range of 100-150 degrees. For example, the first included angle α 1 ranges from 100 ° or 110 ° or 120 ° or 130 ° or 140 ° or 150 °.

In the embodiment shown in fig. 7, the first top plate 305 includes two first support plates 3051, and the two first support plates 3051 have a second included angle α 2. Wherein the second included angle alpha 2 is within the range of 100-150 degrees. For example, the second included angle α 2 is in the range of 100 ° or 110 ° or 120 ° or 130 ° or 140 ° or 150 °.

In the embodiment shown in fig. 8 to 10, the dispenser 300 further comprises a second top plate 313, the second top plate 313 is assembled above the first top plate 305 and spaced apart from the first top plate 305, and the first top plate 305, the second top plate 313 and the second end plate 307 jointly enclose the second cavity 302. In some embodiments, one of the first top plate 305 and the second top plate 313 is provided with a plurality of third protrusions 314, the other one of the first top plate 305 and the second top plate 313 is provided with a plurality of third locking slots 315, and the third protrusions 314 are in locking fit with the third locking slots 315, so that the second top plate 313 is assembled above the first top plate 305.

In some embodiments, the second top plate 313 is provided with a plurality of second distribution holes 316, and the heat exchange cavity 1011 is communicated with the second cavity 302 through the plurality of second distribution holes 316. With such an arrangement, the refrigerant in the second cavity 302 enters the heat exchange cavity 1011 through the second distribution holes 316, and the plurality of second distribution holes 316 play a role in buffering because the speed of the gas-liquid two-phase refrigerant entering the second cavity 302 is high.

In some embodiments, the second distribution holes 316 may be circular or triangular or square holes. In some embodiments, the second distribution holes 316 may be different sizes or the same size. And are not limited in this application. In this embodiment, the second distribution holes 316 are circular and have a diameter in the range of 6mm to 18 mm. For example, the diameter of the second distribution holes 316 may be 6mm or 8mm or 10mm or 12mm or 14mm or 16mm or 18 mm.

In some embodiments, the second top plate 313 is further provided with a plurality of limiting grooves 317 for limiting engagement with the bottom of the tube support plate 113, which is simple in structure and convenient to assemble.

In some embodiments, the second top plate 313 includes a plurality of second support plates 3131. In the embodiment shown in fig. 9, the second top plate 313 includes five second supporting plates 3131, and the second supporting plate 3131 disposed at the bottom has a third included angle α 3 with two adjacent second supporting plates 3131. Wherein the third included angle alpha 3 is within an angle range of 100-150 degrees. For example, the third included angle α 3 is in an angular range of 100 ° or 110 ° or 120 ° or 130 ° or 140 ° or 150 °.

In the embodiment shown in fig. 10, the second top plate 313 includes four second supporting plates 3131, and the second supporting plate 3131 disposed at the bottom has a fourth included angle α 4 with two adjacent second supporting plates 3131. Wherein the fourth included angle alpha 4 is within an angle range of 100-150 deg.. For example, the third included angle α 3 is in an angular range of 100 ° or 110 ° or 120 ° or 130 ° or 140 ° or 150 °.

In the embodiment shown in FIG. 11, the top edge of the second end panel 307 has a fifth included angle α 5 with its adjacent beveled edge. Wherein the angle of the fifth included angle alpha 5 ranges from 100 degrees to 150 degrees. For example, the angle range of the fifth angle α 5 is 100 ° or 110 ° or 120 ° or 130 ° or 140 ° or 150 °.

In the embodiment shown in FIG. 12, the top edge of the second end panel 307 has a sixth included angle α 6 with its adjacent beveled edge. Wherein the sixth included angle α 6 is in the range of 100 ° to 150 °. For example, the sixth angle α 6 may range from 100 ° or 110 ° or 120 ° or 130 ° or 140 ° or 150 °. Accordingly, the first end plate 306 and the second end plate 307 have the same structure, and refer to the embodiment shown in the second end plate 307 shown in fig. 11 to 12, which is not described herein again.

The refrigerant enters the first cavity 301 from the first communication port 110 in sequence, slowly flows from one end (close to the first communication port 110) of the first cavity 301 to the other end (far away from the first communication port 110), then enters the second cavity 302 through the first distribution hole 312, and finally enters the heat exchange cavity 1011 through the second distribution hole 316 for heat exchange. In the flowing process, a part of the gas refrigerant is separated, so that more liquid refrigerant flows to the other end of the first cavity 301, the side with more liquid refrigerant flows to the side with less liquid refrigerant, and the refrigerant flowing into the heat exchange cavity 1011 in the second cavity 302 is subjected to boiling heat exchange in the vertical direction, so that the flowing boiling is formed, the heat exchange between the heat exchange tube 200 and the refrigerant is increased, and the heat exchange performance is improved.

In some embodiments, the length of the second top plate 313 is less than that of the first top plate 305, wherein one end of the second top plate 313 is assembled with the second end plate 307, so that the second top plate 313 and the second end plate 307 are closed, a space is left between the other end of the second top plate 313 and the first top plate 305, and a fourth communication port 318 is formed, and the fourth communication port 318 is communicated with the heat exchange cavity 1011. When the refrigerant flows into the second cavity 302 from the first cavity 301, a part of the refrigerant flows into the heat exchange cavity 1011 through the plurality of second distribution holes 316, and another part of the refrigerant flows into the heat exchange cavity 1011 through the fourth communication port 318.

In the process, a part of the refrigerant entering the second cavity 302 from the first distribution hole 312 flows into the heat exchange cavity 1011 through the second distribution hole 316, and the other part flows from the closed end to the open end of the second cavity 302, so that the flow boiling is formed, the heat exchange between the heat exchange tube 200 and the refrigerant is increased, and the heat exchange performance is improved. In the present embodiment, the first communication port 110 is located at a side close to the fourth communication port 318, and communicates with the first cavity 301. The second communication port 111 is located above the dispenser 300 and on a side away from the fourth communication port 318.

In some embodiments, the first plurality of distribution holes 312 are offset in height from the second plurality of distribution holes 316. Since the speed of the refrigerant entering the first cavity 301 is high, the first distribution holes 312 and the second distribution holes 316 are arranged in a staggered manner in the height direction, so that a buffering effect is achieved, the refrigerant sprayed from the second distribution holes 316 is more uniform, and the heat exchange is uniform.

Referring to fig. 13 to 15, the heat exchanger 10 further includes a suction baffle 400, the suction baffle 400 is assembled to the top of the casing 100, and a plurality of air collecting ports 401 are formed at the top of the suction baffle 400. After the refrigerant enters the heat exchange cavity 1011 for heat exchange, part of the refrigerant in the refrigerant is evaporated and converted into gas refrigerant, and the plurality of gas collecting ports 401 of the suction baffle 400 are used for collecting and discharging the gas refrigerant.

In some embodiments, the plurality of air collecting ports 401 are opened facing the top of the casing 100 and have a gap with the top of the casing 100, so that when heat exchange is performed, the refrigerant absorbs heat, is evaporated into a gas refrigerant, and the gas refrigerant flows upwards, thereby facilitating collection of the gas refrigerant and reducing air absorption and liquid entrainment.

In some embodiments, the plurality of air collection ports 401 are sized differently. In some embodiments, the flow area of the gas collecting port 401 increases in a direction from the second communication port 111 to the second communication port 111, and the size of the gas collecting port is smaller near the second communication port 111 and larger far from the second communication port 111.

In some embodiments, the plenum 401 may be a rectangular or circular or polygonal aperture. In some embodiments, the plenum 401 has a height (or equivalent) dimension in the range of 6mm to 30 mm. For example, it may be 6mm or 10mm or 14mm or 18mm or 22mm or 26mm or 30 mm.

In some embodiments, the suction baffle 400 includes a plurality of first suction baffles 402. In the embodiment shown in fig. 14, the suction baffle 400 comprises four first suction baffles 402, and the first suction baffle 402 arranged at the bottom has a seventh included angle α 7 with two adjacent first suction baffles 402. Wherein the angle of the seventh included angle α 7 ranges from 100 ° to 150 °. For example, the angle range of the seventh angle α 7 is 100 ° or 110 ° or 120 ° or 130 ° or 140 ° or 150 °.

In the embodiment shown in fig. 15, the suction baffle 400 comprises five first suction baffles 402, and two adjacent first suction baffles 402 arranged at the bottom of the suction baffle 400 have an eighth included angle α 8. Wherein the angle of the eighth included angle α 8 ranges from 100 ° to 150 °. For example, the angle range of the eighth angle α 8 is 100 ° or 110 ° or 120 ° or 130 ° or 140 ° or 150 °.

In the embodiment shown in fig. 14 and 15, the first intake damper 402 provided on the ceiling of the intake damper 400 has a curved surface structure and is attached to the inner wall of the casing 100, thereby effectively utilizing the internal space of the casing 100 and increasing the internal space of the intake damper 400. So set up, the roof of cambered surface structure conveniently assembles suction baffle 400.

In other embodiments, similar to the embodiment shown in FIG. 14, the suction baffle 400 includes three first suction baffles 402, which may be configured differently with a ceiling having a cambered configuration. Similar to the embodiment shown in fig. 15, the suction baffle 400 includes four first suction baffles 402, which may be configured differently with cambered top plates. So set up, a plurality of gas collection ports 401 have the clearance with the top of casing 100, make things convenient for gaseous refrigerant to get into heat transfer cavity 1011. In some embodiments, the top of the end plate of the suction baffle 400 may be an arc-shaped structure to facilitate assembly with the inner wall of the casing 100.

In some embodiments, the length of the dispenser 300 is less than the length of the housing 100. In the heating mode, the heat exchanger 10 functions as a condenser. The condenser converts the gas refrigerant into liquid refrigerant by heat-releasing liquefaction. In some embodiments, the condenser includes a fifth communication port 120 provided in the housing 100, the fifth communication port 120 being provided in the bottom of the housing 100 (as shown in fig. 1) and being disposed close to the first communication port 110 relative to the third communication port 119; the second communication port 111 serves as a gas refrigerant inlet of the condenser, and the fifth communication port 120 serves as a liquid refrigerant outlet of the condenser.

In some embodiments, the end of the suction baffle 400 is provided with a gas channel 403 (for example, as shown in fig. 14 or fig. 15), and the second communication port 111 communicates with the heat exchange cavity 1011 through the gas channel 403 and the gas collection port 401. When the heat exchanger 10 is used as a condenser, the gas refrigerant enters the suction baffle 400 through the second communication port 111, flows into the heat exchange cavity 1011 through the gas channel 403 and the gas collecting port 401, exchanges heat with the plurality of heat exchange tubes 200, is liquefied and converted into the liquid refrigerant by heat release, and is discharged through the fifth communication port 120.

In some embodiments, the gas channels 403 may be rectangular holes or circular or polygonal holes. In some embodiments, the height (or equivalent) dimension of the gas channel 403 is in the range of 6mm to 30 mm. For example, the height (or equivalent) dimension of the gas channel 403 may be 6mm or 8mm or 10mm or 12mm or 14mm or 16mm or 18mm or 20mm or 22mm or 24mm or 26mm or 28mm or 30 mm. With such an arrangement, the area of the end surface of the suction baffle 400 is effectively utilized, and smooth circulation of the gas refrigerant is ensured.

In some embodiments, a plurality of fourth protrusions 404 are disposed at two ends of the air suction baffle 400, a fourth locking groove 405 corresponding to the plurality of fourth protrusions 404 is disposed at an edge of an end plate of the air suction baffle 400, and the fourth protrusions 404 and the fourth locking grooves 405 are correspondingly locked and matched, so that the plurality of first air suction baffles 402 or the first air suction baffles 402 are assembled.

In some embodiments, the bottom of the suction baffle 400, which is away from the second communication port 111, is provided with a plurality of drain holes 406 (shown in fig. 13). In the present embodiment, two drain holes 406 are provided and are spaced apart from each other. The drain hole 406 is used to drain the liquid refrigerant condensed in the suction baffle 400 into the heat exchange cavity 1011. In some embodiments, the drain holes 406 have a single diameter (or equivalent) size in the range of 3mm to 6 mm. For example, it may be 3mm or 4mm or 5mm or 6 mm.

Referring to fig. 16 to 19, the condenser further includes an impingement plate 500, and the impingement plate 500 is assembled to the bottom of the suction baffle 400 and is located directly below the second communication port 111. Since the gas refrigerant entering through the second communicating port 111 has a high velocity, the impingement plate 500 is provided just below the second communicating port 111 to prevent the air flow from being flushed and protect the suction baffle 400.

In some embodiments, the impingement plate 500 is fixed to the inner wall of the suction baffle 400 by a fixing member or by welding. In some embodiments, the structure of the impingement plate 500 is similar to the baffle structure of the suction baffle 400, and the angle range of the adjacent baffles corresponds to the size of the baffle of the suction baffle 400, which can be described above with reference to the suction baffle 400 and will not be described herein again.

In the embodiment shown in fig. 1, the heat exchanger 10 further includes a temperature sensor (not shown) assembled in the casing 100 through a temperature detector joint 121 for detecting the temperature of the refrigerant in the casing 100, so as to avoid an excessively high temperature or an excessively low temperature, and improve safety.

In the embodiment shown in fig. 2, the heat exchanger further includes a liquid level sensor 122 assembled outside the housing 100 through the first connecting member 123 and the second connecting member 124, and configured to detect a liquid level inside the heat exchanging cavity 1011, so as to ensure that a liquid level of the refrigerant inside the heat exchanging cavity 1011 meets requirements when the heat exchanger 10 exchanges heat.

The present application further provides a water chiller including the heat exchanger 10 shown in fig. 1-19 described above. In some embodiments, the chiller may be a water-cooled chiller. Wherein, the water-cooling water chilling unit can be a centrifugal water-cooling unit or a screw water-cooling unit. In other embodiments, the chiller may be an air-cooled chiller. In some embodiments, by using the heat exchanger 10 of the above embodiments, the heat exchange performance of the water chiller can be improved. Moreover, the heat exchanger 10 can be used as an evaporator and a condenser, so that application scenes are enlarged, and cost is reduced.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. A heat exchanger, comprising:

the shell comprises a heat exchange cavity, and a first communication port, a second communication port and a third communication port which are communicated with the heat exchange cavity, wherein the first communication port and the third communication port are arranged at the bottom of the shell, and the second communication port is arranged at the top of the shell;

the heat exchange tubes are parallelly penetrated in the heat exchange cavity; and

the distributor is arranged in the heat exchange cavity and assembled at the bottoms of the heat exchange tubes, and comprises a first cavity and a second cavity which are communicated with each other, the first cavity is communicated with the first communication port, and the second cavity is communicated with the heat exchange cavity.

2. The heat exchanger according to claim 1, wherein in the cooling mode, the heat exchanger functions as an evaporator, the first communication port functions as a gas-liquid two-phase refrigerant inlet of the evaporator, the second communication port functions as a gas refrigerant outlet of the evaporator, and the third communication port functions as an oil return port of the evaporator.

3. The heat exchanger of claim 2, wherein the distributor comprises a bottom plate, a first top plate assembled above the bottom plate, and a first end plate and a second end plate assembled at two ends of the bottom plate and the first top plate, the bottom plate, the first top plate, the first end plate, and the second end plate together enclose the first cavity, the first top plate is provided with a plurality of first distribution holes, and the second cavity is communicated with the first cavity through the plurality of first distribution holes.

4. The heat exchanger of claim 3, wherein the distributor further comprises a second top plate assembled above and spaced apart from the first top plate, the second top plate and the second end plate together defining the second cavity, the second top plate being provided with a plurality of second distribution holes, and the heat exchange cavity being in communication with the second cavity through the plurality of second distribution holes.

5. The heat exchanger of claim 4, wherein the length of the second top plate is smaller than the length of the first top plate, wherein one end of the second top plate is assembled with the second end plate, a space is left between the other end of the second top plate and the first top plate, and a fourth communication port is formed, and the fourth communication port is communicated with the heat exchange cavity.

6. The heat exchanger of claim 5, wherein the first communication port is located on a side close to the fourth communication port and communicates with the first chamber; and/or

The second communication port is positioned above the distributor and is positioned on one side far away from the fourth communication port; and/or

The plurality of first distribution holes and the plurality of second distribution holes are arranged in a staggered manner in the height direction.

7. The heat exchanger according to claim 1, further comprising a suction baffle assembled to the top of the housing, wherein a plurality of gas collecting ports are formed in the top of the suction baffle, the gas collecting ports open to the top of the housing, and the flow areas of the gas collecting ports increase sequentially from the position close to the second communication port to the position away from the second communication port; and/or

The length of the dispenser is less than the length of the housing.

8. The heat exchanger of claim 1, wherein in the heating mode, the heat exchanger functions as a condenser, the condenser including a fifth communication port provided in the housing, the fifth communication port being provided in a bottom portion of the housing and being disposed close to the first communication port with respect to the third communication port; the second communication port serves as a gas refrigerant inlet of the condenser, and the fifth communication port serves as a liquid refrigerant outlet of the condenser.

9. The heat exchanger of claim 8, wherein the condenser further comprises a suction baffle assembled to the top of the shell;

the end part of the air suction baffle is provided with a gas channel, and the second communication port is communicated with the heat exchange cavity through the gas channel; and/or

The condenser further comprises an impingement plate, and the impingement plate is assembled at the bottom of the air suction baffle and is positioned under the second communication port.

10. A water chiller comprising a heat exchanger as claimed in any one of claims 1 to 9.

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