CN115265234A

CN115265234A - Environment testing equipment and heat exchange device

Info

Publication number: CN115265234A
Application number: CN202210722368.3A
Authority: CN
Inventors: 戴磊; 江志炜; 徐铭利; 叶嘉俊; 胡杰锋; 郑昆
Original assignee: Guangzhou Wusuo Environmental Equipment Co ltd
Current assignee: Guangzhou Wusuo Environmental Equipment Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-11-01
Anticipated expiration: 2042-06-24
Also published as: CN115265234B

Abstract

The invention provides an environment testing device and a heat exchange device. Wherein, the body is equipped with and holds chamber, first air inlet, first gas outlet, second air inlet and second gas outlet, and first air inlet holds chamber and first gas outlet and communicates in proper order. The heat exchange piece is arranged in the accommodating cavity and provided with a heat exchange channel with a first end and a second end, the first end is communicated with the second air inlet, and the second end is communicated with the second air outlet, so that heat exchange media in the heat exchange channel can exchange heat with the heat exchange media in the accommodating cavity. This application make full use of the heat transfer medium of low temperature low pressure that the evaporimeter exported makes it can carry out the heat transfer through heat transfer device with the heat transfer medium of high temperature high pressure, and then need not utilize high pressure heat transfer medium of low temperature and precooling apparatus in order to reduce the temperature of the heat transfer medium of inputing plate heat exchanger in addition, has reduced environment test equipment's complexity and manufacturing cost, has improved environment test equipment's refrigeration performance.

Description

Environment testing equipment and heat exchange device

Technical Field

The invention relates to the field of refrigeration, in particular to environment testing equipment and a heat exchange device.

Background

At present, the water-cooled condenser in the industry mainly comprises a shell-and-tube condenser and a plate heat exchanger, wherein the plate heat exchanger is the mainstream in the industry. However, under some working conditions with low cold requirement and low flow rate of refrigerant, the plate heat exchanger can cause accelerated corrosion due to local high temperature. According to relevant data, the corrosion is accelerated by 1-3 times when the temperature rises by 10 ℃, and in order to ensure the normal service life of the plate heat exchanger, the heat exchange medium entering the plate heat exchanger is not suitable to exceed 80 ℃, and the exhaust temperature of a plurality of working conditions in actual use can exceed 100 ℃. In order to reduce the temperature of a heat exchange medium entering a plate heat exchanger, a precooling device is additionally arranged between the plate heat exchangers in the traditional environment testing equipment. However, the precooling apparatus needs to separately introduce a low-temperature high-pressure heat exchange medium (i.e., a low-temperature high-pressure liquid refrigerant), so that the refrigeration performance of the environmental test equipment is reduced.

Disclosure of Invention

Based on this, it is necessary to provide an environmental test equipment and heat transfer device to the problem that precooling apparatus needs the microthermal heat transfer medium of solitary letting in among traditional environmental test equipment for environmental test equipment's refrigeration performance reduces.

The technical scheme is as follows:

in one aspect, a heat exchange device is provided for environmental test equipment, including:

the gas-liquid separator comprises a body, a first gas inlet, a first gas outlet, a second gas inlet and a second gas outlet, wherein the body is provided with a containing cavity, the first gas inlet, the containing cavity and the first gas outlet are sequentially communicated; and

the heat exchange piece is arranged in the accommodating cavity and provided with a heat exchange channel with a first end and a second end, the first end is communicated with the second air inlet, and the second end is communicated with the second air outlet, so that heat exchange media in the heat exchange channel can exchange heat with the heat exchange media in the accommodating cavity. The technical solution is further explained below:

in one embodiment, the heat exchange device further comprises heat exchange fins, and the heat exchange fins are fixedly connected with the outer side walls of the heat exchange pieces, so that heat transfer can be performed between the heat exchange pieces and the heat exchange fins.

In one embodiment, the heat exchange member includes a first straight tube section provided with the first end, a second straight tube section provided with the second end, a bent tube section used for communicating the first straight tube section with the second straight tube section, and a heat exchange branch tube, the first straight tube section and the second straight tube section are arranged at an interval, the heat exchange branch tube is arranged between the first straight tube section and the second straight tube section, and two ends of the heat exchange branch tube are communicated with the first straight tube section and the second straight tube section in a one-to-one correspondence manner, so that the first straight tube section, the bent tube section, the heat exchange branch tube and the second straight tube section can be matched to form the heat exchange channel, and the heat exchange fin is fixedly connected with the heat exchange branch tube, so that heat transfer can be performed between the heat exchange branch tube and the heat exchange fin.

In one embodiment, the second air inlet and the second air outlet are both disposed between the first air inlet and the first air outlet, and a connection line between the second air inlet and the second air outlet is perpendicular to a connection line between the first air inlet and the first air outlet.

In one embodiment, the heat exchange device further comprises a first oil separator arranged in the accommodating cavity, the first oil separator is arranged corresponding to the first air inlet, and the first oil separator is used for separating lubricating oil in the heat exchange medium input into the accommodating cavity.

In one embodiment, the first oil separator includes a first baffle and a first oil distribution filter screen, the first baffle is fixedly connected with the inner side wall of the accommodating cavity, and the first oil distribution filter screen is disposed on the first baffle and is disposed corresponding to the first air inlet, so that the heat exchange medium in the first air inlet can pass through the first oil distribution filter screen to be input into the accommodating cavity.

In one embodiment, the first baffle is disposed between the first air inlet and the first air outlet along an axial direction of the body.

In one embodiment, the heat exchange device further comprises an oil return assembly, and the oil return assembly is used for discharging the lubricating oil in the accommodating cavity.

In one embodiment, the heat exchange device further comprises a second oil separator arranged in the accommodating cavity, the second oil separator is arranged corresponding to the first air outlet, and the second oil separator is used for separating and outputting lubricating oil in the heat exchange medium in the accommodating cavity.

On the other hand, the environment testing equipment is provided, and comprises a compressor, a plate heat exchanger, an evaporator and a heat exchange device, wherein the compressor is provided with a first air inlet, a containing cavity, a first air outlet, the plate heat exchanger, the evaporator, a second air inlet, a heat exchange channel and a second air outlet which can be sequentially communicated to form a closed cavity.

The environment test equipment and the heat exchange device in the above embodiment, during the use, the high-temperature and high-pressure heat exchange medium that the compressor output is input first air inlet, the second air inlet is exported to the low-temperature and low-pressure heat exchange medium that the evaporimeter output, make and hold and carry out the heat transfer through the heat transfer piece between the high-temperature and high-pressure heat exchange medium of intracavity and the low-temperature and low-pressure heat exchange medium in the heat transfer passageway, and then make the temperature of the heat exchange medium who exports first gas outlet and input plate heat exchanger reduce, reduce plate heat exchanger's corrosion rate, the life of environment test equipment and plate heat exchanger has been improved, and make the temperature of the heat exchange medium who exports second gas outlet and input compressor rise, avoid the compressor to frost, improve the performance of environment test equipment and compressor. For traditional precooling apparatus, this application make full use of the low temperature low pressure heat transfer medium of evaporimeter output for low temperature low pressure heat transfer medium can carry out the heat transfer through heat transfer device with the high temperature high pressure heat transfer medium who inputs plate heat exchanger, and then need not utilize low temperature high pressure heat transfer medium and precooling apparatus in order to reduce the temperature of the heat transfer medium who inputs plate heat exchanger in addition, has reduced environment test equipment's complexity and manufacturing cost, has improved environment test equipment's refrigeration performance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an environmental test apparatus according to an embodiment;

FIG. 2 is a schematic structural diagram of a heat exchange device according to an embodiment;

fig. 3 isbase:Sub>A cross-sectional view of the heat exchange device of fig. 2 taken along the directionbase:Sub>A-base:Sub>A.

Description of reference numerals:

10. a heat exchange device; 100. a body; 110. an accommodating chamber; 120. a first air inlet; 130. a first air outlet; 140. a second air inlet; 150. a second air outlet; 160. an installation part; 200. a heat exchange member; 210. a heat exchange channel; 220. a first straight pipe section; 230. a second straight tube section; 240. bending the pipe section; 250. a heat exchange branch pipe; 300. heat exchange fins; 400. a first oil separator; 410. a first baffle plate; 420. a first oil distribution filter screen; 500. an oil return assembly; 510. a floating ball; 520. a crank arm; 530. an oil return valve; 540. an oil return pipe; 600. a second oil separator; 700. a compressor; 800. a plate heat exchanger; 900. an evaporator; 1000. an electromagnetic valve; 1100. a throttle member; 1200. a drying and filtering device; 1300. and (4) environment testing equipment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1 and fig. 2, in an embodiment, an environment testing apparatus 1300 is provided, which includes a compressor 700, a plate heat exchanger 800, an evaporator 900, and a heat exchanging device 10, where the compressor 700, a first air inlet 120, an accommodating chamber 110, a first air outlet 130, the plate heat exchanger 800, the evaporator 900, a second air inlet 140, a heat exchanging channel 210, and a second air outlet 150 can be sequentially communicated to form a closed cavity.

Thus, firstly, the compressor 700 can compress the low-temperature and low-pressure heat exchange medium (the heat exchange medium may be a refrigerant such as chlorofluorocarbon or ammonia) into a high-temperature and high-pressure heat exchange medium; then, the high-temperature high-pressure heat exchange medium exchanges heat through the heat exchange device 10 and the plate heat exchanger 800, so that the high-temperature high-pressure heat exchange medium releases heat to be liquefied to form a low-temperature high-pressure heat exchange medium; then, the low-temperature high-pressure heat exchange medium is input into the evaporator 900 to be depressurized to form a low-temperature low-pressure heat exchange medium, so that the low-temperature low-pressure heat exchange medium can absorb heat in the environment to achieve the refrigeration effect; finally, the low-temperature and low-pressure heat exchange medium absorbs heat, is gasified and is input into the compressor 700 again through the heat exchange channel 210 to be compressed, so that the heat exchange medium can circularly flow in the closed cavity, the environment testing equipment 1300 can continuously refrigerate, and the reliability and the stability of the environment testing equipment 1300 are improved.

The environment testing apparatus 1300 further includes a connecting pipe, and the compressor 700, the first air inlet 120, the accommodating cavity 110, the first air outlet 130, the plate heat exchanger 800, the evaporator 900, the second air inlet 140, the heat exchange channel 210, and the second air outlet 150 are correspondingly communicated with each other through the connecting pipe. Thus, the convenience and flexibility of installation of the environment testing apparatus 1300 are improved.

As shown in fig. 1, in an embodiment, the environment testing apparatus 1300 further includes a first connection pipe, a solenoid valve 1000, and a throttle 1100, the first connection pipe is used for communicating the plate heat exchanger 800 and the evaporator 900, and the solenoid valve 1000 and the throttle 1100 are both disposed on the first connection pipe. Therefore, whether the heat exchange medium in the closed cavity circularly flows or not can be controlled by the electromagnetic valve 1000, and the flow of the heat exchange medium in the closed cavity is adjusted by the throttling piece 1100, so that the refrigerating effect of the environment testing equipment 1300 can be adjusted, and the applicability of the environment testing equipment 1300 is improved.

The throttle 1100 may be a flow regulating valve, a throttle-type flow meter, or other element capable of regulating flow.

As shown in fig. 1, further, the environment testing apparatus 1300 further includes a dry filter disposed on the first connection pipe. So, the air in the drier-filter can the dry airtight cavity, avoids the moisture liquefaction in the airtight cavity and gets into in the compressor 700 and lead to the compressor 700 trouble, has improved the reliability and the life of environmental test equipment 1300.

As shown in fig. 2 and 3, in one embodiment, a heat exchange device 10 is provided, which is applied to an environmental test apparatus 1300 and includes a body 100 and a heat exchange member 200. The body 100 is provided with an accommodating cavity 110, a first air inlet 120, a first air outlet 130, a second air inlet 140, and a second air outlet 150, wherein the first air inlet 120, the accommodating cavity 110, and the first air outlet 130 are sequentially communicated. The heat exchange member 200 is disposed in the accommodating cavity 110, the heat exchange member 200 is provided with a heat exchange channel 210 having a first end and a second end, the first end is communicated with the second air inlet 140, and the second end is communicated with the second air outlet 150, so that the heat exchange medium in the heat exchange channel 210 can exchange heat with the heat exchange medium in the accommodating cavity 110.

In the heat exchange device 10 in the above embodiment, when in use, the high-temperature and high-pressure heat exchange medium output by the compressor 700 is input into the first air inlet 120, and the low-temperature and low-pressure heat exchange medium output by the evaporator 900 is input into the second air inlet 140, so that heat exchange can be performed between the high-temperature and high-pressure heat exchange medium in the accommodating cavity 110 and the low-temperature and low-pressure heat exchange medium in the heat exchange channel 210 through the heat exchange member 200, and further, the temperature of the heat exchange medium output from the first air outlet 130 and input into the plate heat exchanger 800 is reduced, the corrosion rate of the plate heat exchanger 800 is reduced, the service lives of the environment testing equipment 1300 and the plate heat exchanger 800 are prolonged, the temperature of the heat exchange medium output from the second air outlet 150 and input into the compressor 700 is increased, frosting of the compressor 700 is avoided, and the performance of the environment testing equipment 1300 and the compressor 700 is improved. For traditional precooling apparatus, this application make full use of the low temperature low pressure heat transfer medium of evaporimeter 900 output for low temperature low pressure heat transfer medium can carry out the heat transfer through heat transfer device 10 with the high temperature high pressure heat transfer medium of input plate heat exchanger 800, and then need not utilize low temperature high pressure heat transfer medium and precooling apparatus in order to reduce the temperature of the heat transfer medium of input plate heat exchanger 800 in addition, has reduced environment test equipment 1300's complexity and manufacturing cost, has improved environment test equipment 1300's refrigeration performance.

The body 100 may be a box, a cylinder, or other structures.

In other embodiments, the heat exchange device 10 can also be applied to an air conditioner, a refrigeration cabinet or other equipment requiring refrigeration. The principle is the same or similar to that applied to the environment testing device, and is not described in detail herein. In one embodiment, the body 100 includes an upper cover, a cylinder and a lower cover, the upper cover, the cylinder and the lower cover can cooperate to form the receiving cavity 110, and the first air inlet 120, the first air outlet 130, the second air inlet 140 and the second air outlet 150 are disposed on the upper cover. In this manner, assembly of the heat exchange device 10 is facilitated.

As shown in fig. 2 and 3, the outer wall of the body 100 is provided with a mounting portion 160. Thus, the heat exchanger 10 can be fixedly connected with external environment elements through the mounting portion 160, and convenience in mounting the heat exchanger 10 is improved.

The mounting portion 160 may be a fixing screw, an inserting rod, a clamping block, or other fixing structure. The mounting portion 160 is disposed on an outer sidewall of the body 100 and may be welded, inserted, clamped, screwed, or fixedly connected.

The heat exchange member 200 may be a heat exchange tube, a heat exchange pipeline, a heat exchanger, a heat exchange jacket, or other heat exchange components provided with heat exchange channels 210.

As shown in fig. 2 and 3, in one embodiment, the heat exchange device 10 further includes heat exchange fins 300, and the heat exchange fins 300 are fixedly connected to the outer side walls of the heat exchange member 200, so that heat transfer can be performed between the heat exchange member 200 and the heat exchange fins 300. Therefore, heat exchange can be performed between the high-temperature high-pressure heat exchange medium and the low-temperature low-pressure heat exchange medium through the heat exchange piece 200 and the heat exchange fins 300, so that the heat exchange area of the heat exchange device 10 is increased, and the heat exchange performance and the reliability of the heat exchange device 10 are improved.

Further, the heat exchange member 200 includes a first straight pipe section 220 provided with a first end, a second straight pipe section 230 provided with a second end, a bent pipe section 240 for communicating the first straight pipe section 220 with the second straight pipe section 230, and a heat exchange branch pipe 250, the first straight pipe section 220 and the second straight pipe section 230 are arranged at intervals, the heat exchange branch pipe 250 is arranged between the first straight pipe section 220 and the second straight pipe section 230, and two ends of the heat exchange branch pipe 250 are communicated with the first straight pipe section 220 and the second straight pipe section 230 in a one-to-one correspondence manner, so that the first straight pipe section 220, the bent pipe section 240, the heat exchange branch pipe 250 and the second straight pipe section 230 can be matched to form the heat exchange channel 210, and the heat exchange fin 300 is fixedly connected with the heat exchange branch pipe 250, so that heat transfer can be performed between the heat exchange branch pipe 250 and the heat exchange fin 300. Therefore, the heat exchange pieces 200 and the heat exchange fins 300 can be more uniformly distributed in the accommodating cavity 110, so that the heat exchange uniformity of the heat exchange medium in the heat exchange channel 210 and the heat exchange medium in the accommodating cavity 110 is better, and the heat exchange performance of the heat exchange device 10 is improved.

As shown in fig. 2 and 3, further, the heat exchange fin 300 is provided with a through hole, one end of the heat exchange branch tube 250 is communicated with the first straight tube section 220, the other end of the heat exchange branch tube 250 passes through the through hole and is communicated with the second straight tube section 230, and the heat exchange branch tube 250 is in interference fit with the through hole. Therefore, the heat exchange fins 300 can be stably and reliably fixed on the heat exchange branch pipes 250, so that the reliability and stability of heat transfer between the heat exchange branch pipes 250 and the heat exchange fins 300 are improved, and the reliability and stability of the heat exchange device 10 are improved.

The number of the heat exchange branch pipes 250 and the number of the heat exchange fins 300 can be flexibly adjusted according to the actual use requirement. For example, the number of the heat exchange branch pipes 250 may be four, six, eight, or the like; the number of heat exchanging fins 300 may be five, ten, fifteen, or the like.

As shown in fig. 3, optionally, there are at least two heat exchange branch pipes 250 and at least two heat exchange fins 300, each heat exchange fin 300 is provided with at least two through holes, and at least two heat exchange branch pipes 250 correspondingly pass through the at least two through holes, so that the at least two heat exchange fins 300 can be fixedly arranged on the at least two heat exchange branch pipes 250 at intervals. Thus, by increasing the number of the heat exchange branch pipes 250 and the number of the heat exchange fins 300, the heat exchange area between the heat exchange medium in the accommodating cavity 110 and the heat exchange medium in the heat exchange channel 210 is increased, and the heat exchange performance and the reliability of the heat exchange device 10 are improved.

As shown in fig. 2, in one embodiment, the second air inlet 140 and the second air outlet 150 are both disposed between the first air inlet 120 and the first air outlet 130, and a connection line between the second air inlet 140 and the second air outlet 150 is perpendicular to a connection line between the first air inlet 140 and the first air outlet 150. Thus, the heat exchange medium input into the accommodating cavity 110 from the first air inlet 120 needs to pass through the outer side of the heat exchange member 200 and be output from the first air outlet 130, so that the heat exchange medium in the accommodating cavity 110 can exchange heat with the heat exchange medium in the heat exchange channel 210, and the heat exchange performance and reliability of the heat exchange device 10 are improved.

In other embodiments, the line between the second inlet port 140 and the second outlet port 150 is angled with respect to the line between the first inlet port 140 and the first outlet port 150. In this way, the heat exchange medium input into the accommodating chamber 110 from the first air inlet 120 also passes through the outer side of the heat exchange member 200 and is output from the first air outlet 130, so that the heat exchange medium in the accommodating chamber 110 can exchange heat with the heat exchange medium in the heat exchange channel 210.

The connecting line between the second air inlet 140 and the second air outlet 150 and the connecting line between the first air inlet 140 and the first air outlet 150 form an included angle, and the included angle can be flexibly adjusted according to the actual use requirement. For example, the included angle may be 0 °, 45 °, 60 °, or the like.

As shown in fig. 2 and 3, in an embodiment, the heat exchanging device 10 further includes a first oil separator 400 disposed in the accommodating chamber 110, the first oil separator 400 is disposed corresponding to the first air inlet 120, and the first oil separator 400 is used for separating lubricating oil in the heat exchanging medium input into the accommodating chamber 110. In this way, the heat exchange member 200 and the first oil separator 400 are both disposed in the accommodating chamber 110, reducing the volume of the environmental testing apparatus 1300. Meanwhile, the first oil separator 400 can separate the lubricating oil in the heat exchange medium input into the accommodating chamber 110, so that the lubricating oil is prevented from entering the plate heat exchanger 800 and the evaporator 900, and the reliability of the environment testing equipment 1300 is improved. In addition, the heat exchanging device 10 can replace a pre-cooling device in the conventional environment testing device 1300, and the number of the electromagnetic valves 1000 and the throttling pieces 1100 is reduced, so that the production cost of the environment testing device 1300 is reduced.

The first oil separator 400 may be a packed oil separator, a filter oil separator, or an oil separator of other structure.

As shown in fig. 2 and 3, further, the first oil separator 400 includes a first baffle 410 and a first oil-separating filter screen 420, the first baffle 410 is fixedly connected to an inner sidewall of the accommodating chamber 110, and the first oil-separating filter screen 420 is disposed on the first baffle 410 and corresponds to the first air inlet 120, so that the heat exchange medium in the first air inlet 120 can be input into the accommodating chamber 110 through the first oil-separating filter screen 420. So, when the high-pressure heat transfer medium input of high temperature that compressor 700 output holds chamber 110, because the cross-section increase overflows for heat transfer medium's velocity of flow reduces suddenly and redirecting, and heat transfer medium is under the filtering action of first branch oil filter screen 420 simultaneously, and then makes the lubricating oil of sneaking into among the heat transfer medium can separate, and the collection that drips along first baffle 410 is in the bottom that holds chamber 110, thereby realizes the technological effect of separation lubricating oil.

The number of the first oil distribution filter screens 420 can be flexibly adjusted according to actual use requirements. For example, the number of the first oil distribution screen 420 may be three, five, eight, etc.

The first baffle 410 and the inner sidewall of the accommodating cavity 110 are fixedly connected by clamping, inserting, screwing, welding or other fixing connection modes. The first oil distribution filter screen 420 is disposed on the first baffle 410, and may be clamped, inserted, hooked, or fixedly connected.

Optionally, the first baffle 410 is disposed between the first air inlet 120 and the first air outlet 130 along the axial direction of the body 100. Therefore, the heat exchange medium entering the accommodating cavity 110 can flow to the inner side wall of the accommodating cavity 110 and the bottom of the accommodating cavity 110 along the first baffle 410, so that the heat exchange medium input into the accommodating cavity 110 is prevented from being directly output from the first air outlet 130, the flow path and the flow time of the heat exchange medium in the accommodating cavity 110 are prolonged, and the heat exchange performance and the reliability of the heat exchange device 10 are improved.

As shown in fig. 2 and fig. 3, in an embodiment, the heat exchanging device 10 further includes an oil return assembly 500, and the oil return assembly 500 is used for discharging the lubricant in the accommodating cavity 110. Therefore, the lubricating oil in the accommodating cavity 110 is discharged timely by the oil return assembly 500, so that the accommodating cavity 110 is ensured to have enough space for accommodating the heat exchange medium, and meanwhile, the lubricating oil is prevented from flowing out of the first air outlet 130 and remixing with the heat exchange medium, so that the heat exchange effect and the oil separation effect of the heat exchange device 10 are improved.

The oil return assembly 500 may be a combination of a ball float valve and an oil return pipe, a combination of a manual oil return valve and an oil return pipe, or other oil return structures.

As shown in fig. 2, optionally, the body 100 is further provided with an opening communicated with the accommodating cavity 110, the oil return assembly 500 includes a floating ball 510, a curved arm 520, an oil return valve 530 and an oil return pipe 540, the floating ball 510 is disposed in the accommodating cavity 110, one end of the curved arm 520 is in transmission connection with the floating ball 510, the other end of the curved arm 520 is in transmission connection with the oil return valve 530, the oil return valve 530 is disposed at one end of the oil return pipe 540, the other end of the oil return pipe 540 passes through the opening and extends out of the accommodating cavity 110, the oil return valve 530 can be opened or closed by the rising or falling of the floating ball 510, and further can control the oil return pipe 540 to be communicated with or separated from the accommodating cavity 110. Thus, when the oil level in the accommodating cavity 110 rises, the floating ball 510 also rises synchronously, so that the floating ball 510 can drive the crank arm 520 to move, and then the crank arm 520 can open the oil return valve 530, so that the lubricating oil in the accommodating cavity 110 can sequentially pass through the oil return valve 530 and the oil return pipe 540 under the action of the heat exchange medium in the accommodating cavity 110 and is discharged out of the accommodating cavity 110. When the oil level in the accommodating cavity 110 drops, the floating ball 510 also drops synchronously, so that the floating ball 510 can drive the crank arm 520 to move, the crank arm 520 can close the oil return valve 530, the heat exchange medium in the accommodating cavity 110 is prevented from leaking, and the reliability of the environment testing equipment 1300 and the heat exchange device 10 is improved.

Alternatively, the other end of the oil return pipe 540 communicates with the crankcase of the compressor 700. Thus, the lubricant oil flowing out of the compressor 700 can flow into the compressor 700 again, and the utilization rate of the lubricant oil and the reliability of the environment testing apparatus 1300 are improved.

As shown in fig. 2 and fig. 3, in an embodiment, the heat exchanging device 10 further includes a second oil separator 600 disposed in the accommodating chamber 110, the second oil separator 600 is disposed corresponding to the first air outlet 130, and the second oil separator 600 is configured to separate lubricating oil in the heat exchanging medium output from the accommodating chamber 110. Thus, the second oil separator 600 can separate the lubricating oil in the heat exchange medium of the output accommodating cavity 110, so that the lubricating oil is prevented from entering the plate heat exchanger 800 and the evaporator 900, and the reliability of the environment testing equipment 1300 is improved.

The second oil separator 600 may be a packed oil separator, a filter oil separator, or an oil separator of other structure.

Further, the heat exchange device 10 further includes a first oil separator 400 and a second oil separator 600 disposed in the accommodating chamber 110, the first oil separator 400 is disposed corresponding to the first air inlet 120, and the first oil separator 400 is used for separating lubricating oil in the heat exchange medium input into the accommodating chamber 110; the second oil separator 600 is disposed corresponding to the first air outlet 130, and the second oil separator 600 is used for separating the lubricating oil in the heat exchange medium output from the accommodating chamber 110. In this way, the lubricating oil in the heat exchange medium output by the compressor 700 is separated twice by the first oil separator 400 and the second oil separator 600, so that the effect of separating the lubricating oil by the heat exchange device 10 and the reliability of the environment testing equipment 1300 are improved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

It should also be understood that in interpreting the connection or positional relationship of the elements, although not explicitly described, the connection and positional relationship are to be interpreted as including a range of error that should be within an acceptable range of deviation from the particular values as determined by one skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a heat transfer device, is applied to environmental test equipment which characterized in that includes:

the gas-liquid separator comprises a body, a first gas inlet, a first gas outlet, a second gas inlet and a second gas outlet, wherein the body is provided with an accommodating cavity, the first gas inlet, the accommodating cavity and the first gas outlet are communicated in sequence; and

the heat exchange piece is arranged in the accommodating cavity and provided with a heat exchange channel with a first end and a second end, the first end is communicated with the second air inlet, and the second end is communicated with the second air outlet, so that heat exchange media in the heat exchange channel can exchange heat with the heat exchange media in the accommodating cavity.

2. The heat exchange device of claim 1, further comprising heat exchange fins fixedly connected to the outer side walls of the heat exchange member, so that heat transfer between the heat exchange member and the heat exchange fins is enabled.

3. The heat exchange device according to claim 2, wherein the heat exchange member includes a first straight pipe section provided with the first end, a second straight pipe section provided with the second end, a bent pipe section for communicating the first straight pipe section with the second straight pipe section, and a heat exchange branch pipe, the first straight pipe section and the second straight pipe section are arranged at an interval, the heat exchange branch pipe is arranged between the first straight pipe section and the second straight pipe section, and two ends of the heat exchange branch pipe are communicated with the first straight pipe section and the second straight pipe section in a one-to-one correspondence manner, so that the first straight pipe section, the bent pipe section, the heat exchange branch pipe and the second straight pipe section can cooperate to form the heat exchange channel, and the heat exchange fin is fixedly connected with the heat exchange branch pipe, so that heat transfer can be performed between the heat exchange branch pipe and the heat exchange fin.

4. The heat exchange device of claim 1, wherein the second gas inlet and the second gas outlet are both disposed between the first gas inlet and the first gas outlet, and a line between the second gas inlet and the second gas outlet is perpendicular to a line between the first gas inlet and the first gas outlet.

5. The heat exchange device according to any one of claims 1 to 4, further comprising a first oil separator disposed in the accommodating chamber, the first oil separator being disposed in correspondence with the first air inlet, the first oil separator being configured to separate lubricating oil in the heat exchange medium introduced into the accommodating chamber.

6. The heat exchange device according to claim 5, wherein the first oil separator includes a first baffle and a first oil-separating filter screen, the first baffle is fixedly connected to an inner side wall of the accommodating chamber, and the first oil-separating filter screen is disposed on the first baffle and corresponds to the first air inlet, so that the heat exchange medium in the first air inlet can pass through the first oil-separating filter screen to be input into the accommodating chamber.

7. The heat exchange device of claim 6, wherein the first baffle is disposed between the first inlet port and the first outlet port along an axial direction of the body.

8. The heat exchange device of claim 5, further comprising an oil return assembly for draining the lubricant oil from the receiving cavity.

9. The heat exchange device according to any one of claims 1 to 4, further comprising a second oil separator disposed in the accommodating chamber, wherein the second oil separator is disposed corresponding to the first air outlet, and is configured to separate and output lubricating oil in the heat exchange medium of the accommodating chamber.

10. An environment test device, characterized in that, includes compressor, plate heat exchanger, evaporimeter and according to any one of claims 1 to 9 heat transfer device, the compressor, first air inlet, hold the chamber, first gas outlet, plate heat exchanger, evaporimeter, second air inlet, heat transfer passageway reaches the second gas outlet can communicate in proper order and form airtight cavity.