Energy-saving cooling equipment with evaporative cooling coil

Abstract

The present invention discloses an energy-saving cooling device with an evaporative cooling coil mounted on it. The refrigeration device comprises a frame, a water receiving pan connected in series to a water circulation loop and a refrigerant tube connected in series to a refrigerant loop are arranged in the frame, the refrigerant tube coil is arranged in the water receiving pan, and the coil height of the refrigerant tube is lower than the depth of the water receiving pan. The present invention directly arranges the refrigerant tube coil in the water receiving pan without a sealed environment, which is not only simple in structure, but also the cooling water cooled by the evaporative heat dissipation mechanism can exchange heat with the refrigerant in the refrigerant tube when it falls into the water receiving pan, thereby realizing rapid cooling of the refrigerant tube; at the same time, since the water receiving pan is in an open state, when the cooling water does not enter the water receiving pan, the refrigerant in the refrigerant tube can exchange heat with the outside air; when the cooling water exchanges heat with the refrigerant in the refrigerant tube, the temperature of the refrigerant will evaporate a part of the cooling water, thereby further improving the heat exchange efficiency and enhancing the heat dissipation effect of the refrigerant tube.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigeration equipment, and in particular relates to an energy-saving cooling device with an evaporative cooling coil mounted thereon. Background Art

[0002] In the prior art, refrigeration equipment often uses a water circulation system and a heat exchanger to fully cool the refrigerant. After the cooling water exchanges heat with the refrigerant, it needs to be cooled again in order to cyclically cool the refrigerant.

[0003] For example, a Chinese utility model patent with patent number CN201720573344.0 discloses an evaporative condensing temperature regulating device, which includes a frame, a lower chamber and an evaporation chamber located above the lower chamber, the evaporation chamber is provided with an evaporative heat dissipation mechanism and a water distribution mechanism for supplying water to the evaporative heat dissipation mechanism, the lower chamber is provided with a water collection and recovery mechanism for recovering cooling water flowing through the evaporative heat dissipation mechanism, the water distribution mechanism, the evaporative heat dissipation mechanism and the water collection and recovery mechanism are connected in series to form a water circulation loop, a circulating water pump is connected in series to the water circulation loop, the water circulation loop is connected to a heat exchanger arranged in the lower chamber and can exchange heat with the refrigerant circulation loop through the heat exchanger.

[0004] Among them, the evaporation heat dissipation mechanism on the water circulation loop includes a plurality of evaporation plates for increasing the evaporation area and a negative pressure fan for accelerating the air flow in the evaporation chamber to form a negative pressure. The evaporation plates are detachably connected to the frame, and each evaporation plate and the negative pressure fan together form the evaporation chamber; the evaporation plate includes an evaporation plate frame, in which a wet curtain paper filled with the evaporation plate frame is arranged, an outer cover is arranged on the side of the evaporation plate frame away from the evaporation chamber, a filter partition is arranged between the outer cover and the evaporation plate frame, and a water inlet trough and a water outlet trough are arranged at the upper and lower ends of the evaporation plate frame respectively; the water distribution mechanism includes a water supply pipe connected to the water collection and recovery mechanism through a circulating water pump, the water supply pipe extends upward into the evaporation chamber, and a plurality of water distribution pipes connected end to end are connected to the water supply pipe, and the water distribution pipe is arranged in the water inlet trough.

[0005] The heat exchangers on the water circulation loop and the refrigerant circulation loop include a hollow shell tube, which is arranged in a spiral shape and has at least one refrigerant tube arranged along the axis of the shell tube. The shell is connected in series to the circulation loop, and the refrigerant tube is connected in series to the refrigerant loop. When the cooling water in the water circulation loop fills the shell tube, the refrigerant tube passing through the shell tube is surrounded by the cooling water, thereby achieving heat exchange between the cooling water and the refrigerant.

[0006] The shortcomings of the evaporative condensing temperature regulating device are: (1) the cooling water entering the water supply pipe needs to first flow through the water distribution pipe connected end to end, and then flow out from the water outlet hole opened on the wall of the water distribution pipe to the water inlet trough horizontally arranged at the upper end of the evaporator plate frame; in order to ensure that the cooling water can fill the water distribution pipe, the opening size of the water outlet hole is generally small, and the cooling water flow rate is generally slow. Under this water flow state, impurities are easily accumulated in the water distribution pipe and the water inlet trough, resulting in the water outlet hole being often blocked and frequently overhauled; (2) the shell tube of the heat exchanger not only has a closed hollow cavity, but also the shell tube and the refrigerant tube are arranged in a spiral shape, which leads to a high cost of the shell tube and the refrigerant tube; and, in the hollow and closed shell tube, the refrigerant tube can only dissipate heat through cooling water, and the heat dissipation effect is poor. Summary of the invention

[0007] The invention aims to provide an energy-saving cooling device with an evaporative cooling coil mounted thereon and having good heat dissipation effect of a refrigerant tube.

[0008] To achieve the above-mentioned object of the invention, the technical solution of the present invention is as follows:

[0009] An energy-saving cooling device with an evaporative cooling coil mounted thereon comprises a frame, wherein a water receiving pan connected in series to a water circulation loop and a refrigerant pipe connected in series to a refrigerant loop are arranged in the frame, wherein the refrigerant pipe coil is arranged in the water receiving pan, and the coil height of the refrigerant pipe is lower than the depth of the water receiving pan.

[0010] The present invention directly arranges the refrigerant tube coil in the water receiving tray (rather than in the lower chamber, which is in the heat exchanger), and does not require a sealed environment. Not only is the structure simple, but the cooling water cooled by the evaporative heat dissipation mechanism can exchange heat with the refrigerant in the refrigerant tube when it falls into the water receiving tray, thereby achieving rapid cooling of the refrigerant tube. At the same time, since the water receiving tray is in an open state, when the cooling water does not enter the water receiving tray, the refrigerant in the refrigerant tube can exchange heat with the outside air. When the cooling water exchanges heat with the refrigerant in the refrigerant tube, the temperature of the refrigerant will evaporate a portion of the cooling water, thereby further improving the heat exchange efficiency and enhancing the heat dissipation effect of the refrigerant tube.

[0011] In the above-mentioned energy-saving cooling device with evaporative cooling coil, the outer periphery of the water receiving pan is provided with a water retaining edge, an overflow pipe protruding from the top surface of the water receiving pan is provided in the center of the water receiving pan, the top edge of the water retaining edge is higher than the overflow port of the overflow pipe, and a water receiving groove for accommodating the refrigerant pipe is formed between the overflow pipe and the water retaining edge. When the water receiving groove is filled with cooling water, the cooling water will flow out from the overflow port of the overflow pipe to the water collecting groove of the water collecting and recycling mechanism under the water receiving pan.

[0012] In the above-mentioned energy-saving cooling device with evaporative cooling coil, the refrigerant pipe is gradually coiled from the water retaining edge of the water receiving tank to the overflow pipe side. The water retaining edge of the water receiving tank has a larger circumference, and the refrigerant pipe is gradually coiled from the water retaining edge to the overflow pipe side, so that the refrigerant pipe at the high temperature end has a larger heat dissipation area, thereby improving the heat dissipation efficiency.

[0013] In the above-mentioned energy-saving cooling device with evaporative cooling coil, a refrigerant pipe inlet and a refrigerant pipe outlet are provided on the water receiving pan, and the refrigerant pipe inlet and the refrigerant pipe outlet are both located on the outer periphery of the overflow pipe;

[0014] The refrigerant pipe comprises in sequence an inlet section fixedly and sealedly installed at the refrigerant pipe inlet, a coil section coiled in the water receiving tank, and an outlet section fixedly and sealedly installed at the refrigerant outlet, wherein the inlet section, coil section and outlet section are integrally arranged;

[0015] The access section and the outlet section are both in an inverted U-shape, and the U-shaped bottoms of the inverted U-shaped access section and the inverted U-shaped outlet section are both above the liquid level of the water receiving pan. The inverted U-shape arrangement above the liquid level of the water receiving pan allows the access section (high temperature section) to dissipate heat first under the action of the fan of the evaporative heat dissipation mechanism; while the inverted U-shape arrangement above the liquid level of the water receiving pan allows the outlet section to be away from the cooling water heated by heat exchange, and dissipate heat again under the action of the fan of the evaporative heat dissipation mechanism before being connected to the refrigerant circuit; thereby further improving the heat dissipation effect of the refrigerant.

[0016] In the above-mentioned energy-saving cooling device on the evaporative cold coil, strip overflow grooves are provided in pairs on the outer peripheral wall of the overflow pipe, and the two overflow grooves belonging to the same pair are symmetrically arranged on the overflow pipe; all overflow grooves extend along the axial direction of the overflow pipe to the end opening of the overflow pipe, and the lengths of the two adjacent overflow grooves are different. After heat exchange with the refrigerant pipe, the cooling water in the water receiving pan heats up again. If only the cooling water in the uppermost layer flows out through the overflow port, the high-temperature cooling water in the lower layer of the water receiving pan will be retained in the water receiving pan, resulting in poor heat dissipation effect of the refrigerant pipe. The overflow grooves of different lengths enable the cooling water at various depths of the water receiving pan to flow out through the overflow pipe, realizing rapid replacement of cooling water, thereby improving heat exchange efficiency. The strip overflow grooves arranged in pairs can further improve the rapid replacement of cooling water in the water receiving pan.

[0017] In the above-mentioned energy-saving cooling device with evaporative cooling coil placed on top, the water receiving tray divides the space in the rack into a lower chamber and an evaporation chamber above the lower chamber, the water circulation loop includes a water collection and recovery mechanism, a water distribution mechanism and an evaporation and heat dissipation mechanism connected in series, the evaporation and heat dissipation mechanism includes at least three evaporation plates, all of which form an evaporation chamber, each evaporation plate has a water inlet trough at the top and a water outlet trough at the bottom, and the water receiving tray is located below the water outlet trough; the water distribution mechanism includes:

[0018] A water supply pipe connected to the water collection and recovery mechanism;

[0019] A plurality of water distribution pipes connected to the water supply pipe;

[0020] A plurality of water distribution plates are arranged corresponding to the water distribution pipes and the evaporation plates respectively. The top surface of the water distribution plate is provided with a water outlet hole connected to the corresponding water distribution pipe and a water stop plate protruding from the top surface of the water distribution plate. A water drainage edge is formed on one side of the water distribution plate away from the water stop plate, and the water drainage edge is connected to the water inlet groove of the corresponding evaporation plate.

[0021] The present invention connects each water distribution pipe to the water supply pipe separately, the number of water distribution pipes is consistent with the number of evaporation plates or is a multiple of the number of evaporation plates, and the cooling water in the water distribution pipe first flows from the water outlet to the top surface of the water distribution plate, and then flows into the water inlet groove of the corresponding evaporation plate along the top surface through the drainage edge. In the whole cooling water distribution process, the cooling water does not pass through any right-angle bends, the water outlet is equivalent to the diameter of the water distribution pipe, and the cooling water flowing out of the water outlet is dispersed to the natural drainage edge of the water distribution plate. The cooling water flows into the water inlet groove from the entire drainage edge. The surfaces of the water supply pipe, the water distribution pipe and the water distribution plate are not easy to accumulate dirt, and the water distribution passage is not easy to be blocked, which greatly reduces the maintenance rate; even if blockage occurs, it is only necessary to clean the water distribution pipe, the water outlet and / or the top surface of the water distribution plate, and the maintenance cost is low. In order to connect with the water inlet groove, the projection of the drainage edge on the water inlet groove should also be a straight line consistent with the water inlet groove. This results in the formation of a triangular area between the drain edge and the outlet hole, and the distances between the outlet hole and various parts of the drain edge are different, which makes it difficult to evenly distribute the cooling water to various parts of the drain edge. Therefore, in the above-mentioned energy-saving cooling device mounted on the evaporative cooling coil, the top surface of the water distribution plate is arched, and the arched top surface is symmetrically arranged about the center of the line connecting the midpoint of the drain edge and the center of the water outlet hole; between the outlet hole and the drain edge, the top surface of the water distribution plate is provided with a diversion structure. After the top surface of the water distribution plate is set to an arch shape, the drainage edge can still be connected to the water inlet trough, but the time required for the cooling water flowing out of the water outlet to reach various parts of the drainage edge can be made consistent (the midpoint of the drainage edge is at the top of the arched top surface, the distance between the water outlet and the midpoint of the drainage edge is short but the cooling water flow rate is slow, and the water flow rate gradually increases from the midpoint of the drainage edge to the two ends of the drainage edge), and the diversion structure can promote the cooling water to be evenly dispersed to the drainage edge, so as to make full use of the evaporation plate and improve the evaporation and heat dissipation rate of the evaporation plate to the cooling water.

[0022] In the above-mentioned energy-saving cooling device mounted on the evaporative cooling coil, the diversion structure includes a flooding platform convexly arranged on the top surface of the water diversion plate, and the water outlet is arranged on the flooding platform; the top surface of the water diversion plate is formed with a plurality of diversion spokes distributed in a fan-shaped manner around the flooding platform, and all the diversion spokes extend from the outer periphery of the flooding platform to the edge of the water discharge, and a diversion channel is formed between two adjacent diversion spokes;

[0023] A guide plate integrally arranged with the water diversion plate is provided between the drainage edge and the water inlet groove, and the extension direction of the guide plate is opposite to that of the water diversion plate, and the diversion spokes extend from the drainage edge to the edge of the guide plate; at least one guide spoke is provided between adjacent diversion spokes, and the guide spokes extend from the edge of the guide plate to the drainage edge; guide channels are formed between two adjacent guide spokes and between adjacent diversion spokes and guide spokes, and each guide channel is arranged with equal width.

[0024] The flooding platform first disperses the cooling water flowing out of the water outlet, and the diverter spokes disperse the cooling water again; at the same time, the cooling water in the diverter channel can flow into the water inlet trough along the guide plate, and will not spray from the drain edge to the outside of the water inlet trough. The guide plate is also provided with diverter spokes extending to the drain edge. This is because the area of ​​the flooding platform is small, and the length of the drain edge is large. On the periphery of the flooding platform, it is not convenient to set the diverter spokes too closely, and the looser diverter spokes make it difficult to ensure that all diverter channels have the same flow rate; and the diverter spokes can divide the cooling water flow in each divert channel again, ensuring that the flow in each guide channel is consistent, and ensuring that the cooling water is evenly dispersed into the water inlet trough. In the above-mentioned energy-saving cooling equipment mounted on the evaporative cold coil, the top surface of the water diverter plate is an obtuse isosceles triangle, and the water stop plate extends from the vertex of the isosceles triangle along the waist of the isosceles triangle to both ends of the guide plate and protrudes in front of the guide plate. The water stop plate can prevent the cooling water flowing out of the water outlet from flowing out into the evaporation chamber, and the water stop plate extends and protrudes in front of the guide plate to surround the cooling water flowing down the guide plate, preventing the cooling water from leaking out and ensuring that all the cooling water flows into the water inlet groove.

[0025] In the above-mentioned energy-saving cooling device with evaporative cooling coil, a groove at the bottom of the flooding platform is provided on the back of the water distribution plate, a water outlet pipe extending to the top surface of the flooding platform is formed in the groove, and the water outlet end of the water distribution pipe is sleeved outside the water outlet pipe and embedded in the groove; on the top surface of the flooding platform, a flooding groove is formed on the side wall of the water outlet pipe and opens toward the diversion spoke. The groove and the water outlet pipe facilitate the rapid installation and removal of the water distribution pipe and the water distribution plate, and the flooding groove facing the diversion spoke prevents the cooling water gushing out of the water outlet from rushing toward the water stop plate and affecting the diversion of the cooling water.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention directly arranges the refrigerant tube coil in the water receiving tray (rather than in the lower chamber, which is in the heat exchanger), and does not require a sealed environment. Not only is the structure simple, but the cooling water cooled by the evaporative heat dissipation mechanism can exchange heat with the refrigerant in the refrigerant tube when it falls into the water receiving tray, thereby achieving rapid cooling of the refrigerant tube. At the same time, since the water receiving tray is in an open state, when the cooling water does not enter the water receiving tray, the refrigerant in the refrigerant tube can exchange heat with the outside air. When the cooling water exchanges heat with the refrigerant in the refrigerant tube, the temperature of the refrigerant will evaporate a portion of the cooling water, thereby further improving the heat exchange efficiency and enhancing the heat dissipation effect of the refrigerant tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an energy-saving cooling device with an evaporative cooling coil mounted thereon according to the present invention;

[0029] Figure 2 for Figure 1 Structural diagram of the middle water distribution plate;

[0030] Figure 3 for Figure 1 Schematic diagram of the structure of the middle water distribution plate from another perspective;

[0031] Figure 4 for Figure 1 Schematic diagram of the structure of the middle evaporation plate;

[0032] Figure 5 for Figure 1 Schematic diagram of the structure of the middle water tray;

[0033] Figure 6 It is a schematic diagram of the arrangement of the refrigerant pipe in the water receiving pan;

[0034] Figure 7 is a schematic diagram of the structure of the refrigerant pipe from another perspective;

[0035] Figure 8 This is an enlarged view of the surface structure of the refrigerant tube. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Example 1

[0038] like Figure 1 As shown, this embodiment is an energy-saving cooling device with an evaporative cooling coil mounted on it, and the refrigeration device includes a frame 1, and an evaporative cooling water circuit circulation system and an evaporative cooling oil circuit circulation system are arranged in the frame 1. A lower chamber 11 and an evaporation chamber 12 located above the lower chamber 11 are formed in the frame 1, wherein the evaporative cooling water circuit circulation system includes a water collection and recovery mechanism 2, a water distribution mechanism 3 and an evaporative heat dissipation mechanism 4 connected in series, wherein the water collection and recovery mechanism 2 is arranged in the lower chamber 11, and the water distribution mechanism 3 and the evaporative heat dissipation mechanism 4 are arranged in the evaporative chamber 12, and the water distribution mechanism 3 is used to transport the cooling water heated by heat to the evaporative heat dissipation mechanism 4, and the evaporative heat dissipation mechanism 4 evaporates and cools the cooling water heated by heat, and the water collection and recovery mechanism 2 is used to recover the cooling water flowing through the evaporative heat dissipation mechanism 4.

[0039] like Figure 1 Shown, combined Figure 4It can be seen that the evaporation heat dissipation mechanism 4 of this embodiment includes a plurality of (four in this embodiment) evaporation plates 41 detachably connected to the side of the frame 1, and all the evaporation plates 41 surround the above-mentioned evaporation chamber 12. Each evaporation plate 41 includes an evaporation plate frame 411, in which a wet curtain paper stack 412 filling the evaporation plate frame 411 is arranged, and an outer cover 413 is arranged on the outer side of the evaporation plate frame 411, and a filter partition 414 is arranged between the outer cover 413 and the evaporation plate frame 411, and the evaporation plate frame 411 has a water inlet groove 415 at the top and a water outlet groove 416 at the bottom; wherein the water inlet groove 415 is connected to the water distribution mechanism 3, and the water outlet groove 416 is connected to the water collection and recovery mechanism 2.

[0040] The evaporative heat dissipation mechanism 4 also includes a negative pressure fan 42 arranged on the top of the frame 1. The negative pressure fan 42 is used to extract the steam generated by the gasification of the high-temperature cooling water dispersed in the evaporation plate 41, thereby reducing the temperature of the high-temperature cooling water.

[0041] like Figure 1 As shown, the water collection and recovery mechanism 2 of this embodiment includes a water collecting box 21 in the lower chamber 11 and a water receiving tray 22 above the water collecting box 21. The water receiving tray 22 is just below the water outlet trough 416. The cooling water flowing out of the water outlet trough 416 is collected in the water receiving tray 22. The evaporation chamber 12 and the lower chamber 11 are located on the upper and lower sides of the water receiving tray 22 respectively.

[0042] like Figure 5 As shown, the water receiving pan 22 of this embodiment includes a pan body 221, the outer periphery of the pan body 221 is provided with a water retaining edge 222, an overflow pipe 23 protruding from the top surface of the water receiving pan 22 is provided in the center of the pan body 221, the top edge of the water retaining edge 222 is higher than the overflow port 231 of the overflow pipe 23, and a water receiving trough 223 is formed between the overflow pipe 23 and the water retaining edge 222.

[0043] like Figure 1 Shown, combined Figure 2 and Figure 3 It can be seen that the water distribution mechanism 3 of this embodiment includes a water supply pipe 32 connected to the water collecting tank 21 through a circulating water pump 31. The water supply pipe 32 extends upward from the lower chamber 11 (through the water receiving tray 22, or from the outer periphery of the water receiving tray 22) to the evaporation chamber 12, and is respectively connected to four water distribution pipes (not shown in the figure) through a five-way connector (not shown in the figure), each water distribution pipe is connected to a water distribution plate 33, and each water distribution plate 33 is respectively installed above the water inlet groove 415 of the corresponding evaporation plate 41.

[0044] like Figure 2 and Figure 3As shown, the top surface of the water dividing plate 33 of the present embodiment is an obtuse isosceles triangle, at the vertex of the isosceles triangle, a flooding platform 34 is convexly provided on the top surface of the water dividing plate 33, and a groove 331 is formed on the back of the water dividing plate 33 below the flooding platform 34, and a water outlet pipe 35 is formed in the groove 331, which extends in the opposite direction to the top surface of the flooding platform 34, and the water outlet hole 351 protrudes from the top surface of the flooding platform 34; during installation, the water dividing pipe is sleeved on the outside of the water outlet pipe 35 and embedded in the groove 331, so that the cooling water in the water dividing pipe can flow to the top surface of the water dividing plate 33 through the water outlet pipe 35.

[0045] like Figure 2 As shown, on one side of the flooding platform 34, a flooding groove 352 is formed on the side wall of the water outlet pipe 35; on the side facing the flooding groove 352, a drainage edge 332 located at the base of an isosceles triangle is formed on the top surface of the water dividing plate 33. In order to connect with the water inlet groove 415, the projection of the drainage edge 332 on the water inlet groove 415 should also be a straight line consistent with the water inlet groove 415. This results in the drainage edge 332 and the water outlet hole 351 forming a triangular area, and the distances between the water outlet hole 351 and various parts of the drainage edge 332 are different, which makes it difficult to evenly distribute the cooling water to various parts of the drainage edge 332. Therefore, in this embodiment, the top surface of the water dividing plate 33 is set to be arched (such as Figure 2 As shown in the figure, the arched top surface is symmetrically arranged about the line connecting the midpoint of the drainage edge 332 and the center of the water outlet hole 351; and the drainage edge 332 is provided with a guide plate 36 integrally arranged with the water diversion plate 33 (the side wall of the guide plate 36 connected to the water diversion plate 33 is also arched), and the guide plate 36 extends toward the back of the water diversion plate 33 and connects with the water inlet groove 415. Between the flooding platform 34 and the drainage edge 332, the top surface of the water diversion plate 33 is provided with a plurality of diversion spokes 333 distributed in a fan shape around the flooding platform 34, and each diversion spoke 333 extends from the outer periphery of the flooding platform 34 to the drainage edge 332 and then continues to extend to the edge of the guide plate 36, and a diversion channel 334 is formed between adjacent diversion spokes 333. Due to the limited area of ​​the flooding platform 34, the spacing between the diverter spokes 333 on the side of the drainage edge 332 is uncertain; therefore, in this embodiment, a plurality of diverter spokes 361 are also arranged on the guide plate 36, each of which extends from the edge of the guide plate 36 to the drainage edge 332, and the diverter spokes 361 are located between the diverter spokes 333, dividing each diverter channel 334 into diverter channels 362 of equal width. When distributing water, the cooling water flows from the flooding trough 352 to the flooding platform 34, the flooding platform 34 first disperses the cooling water in the first stage, the diverter spokes 333 disperse the cooling water in the second stage, and the diverter spokes 361 disperse the cooling water in the third stage, ensuring that the cooling water flows evenly into the water inlet trough 415 along all parts of the guide plate 36.

[0046] On the side facing away from the overflow trough 352, the water diversion plate 33 is provided with a water stop plate 37 protruding from the top surface of the water diversion plate 33. The water stop plate 37 is also integrally arranged with the water diversion plate 33. The water stop plate 37 extends from the vertex of the isosceles triangle along the waist of the isosceles triangle to the two ends of the guide plate 36 and protrudes in front of the guide plate 36, thereby enclosing the cooling water and ensuring that the cooling water flows from the surface of the guide plate 36 along the drainage edge 332 into the water inlet trough 415.

[0047] like Figure 1 and Figure 6 As shown, the evaporative cooling oil circuit circulation system includes a refrigerant pipe 5, which is coiled in the water receiving groove 223 of the water receiving pan 22. A refrigerant pipe inlet and a refrigerant pipe outlet are provided in the water receiving groove 223, and the refrigerant pipe inlet and the refrigerant pipe outlet are both located at the outer periphery of the overflow pipe 23; the refrigerant pipe 5 sequentially includes an access section 51 fixedly and sealedly installed at the refrigerant pipe inlet, a coil section 52 coiled in the water receiving groove 223, and an outlet section 53 fixedly and sealedly installed at the refrigerant pipe outlet, and the access section 51, the coil section 52 and the outlet section 53 are integrally arranged.

[0048] like Figure 6 and Figure 7 As shown, in this embodiment, the coil section 52 of the refrigerant tube 5 is gradually coiled from the water retaining edge 222 of the water receiving tank 223 to the overflow pipe 23 side, and the access section 51 is connected from the overflow pipe 23 side of the water receiving tank 223. Therefore, the access section 51 is set to be an inverted U-shape, and the U-shaped bottom of the inverted U-shaped access section 51 is above the liquid level of the water receiving pan 22. Among the two arms of the U-shape, one arm is connected from the refrigerant tube access port, and the other arm is connected to the coil section 52. The outlet section 53 is also an inverted U-shape. The inverted U-shape is set above the liquid level of the water receiving pan 22 so that the high temperature section of the access section 51 can first dissipate heat under the action of the fan of the evaporative heat dissipation mechanism 4; and the inverted U-shape is set above the liquid level of the water receiving pan 22 so that the outlet section 53 is far away from the cooling water heated by heat exchange, and is connected to the evaporative cooling oil circuit circulation system after dissipating heat again under the action of the fan of the evaporative heat dissipation mechanism 4; thereby further improving the heat dissipation effect of the refrigerant.

[0049] The refrigerant pipe 5 exchanges heat with the cooling water in the water receiving pan 22. After the refrigerant cools down, the cooling water in the water receiving pan 22 heats up again. If the heated cooling water can only flow out from the overflow port 231 at the end of the overflow pipe 23, a large amount of high-temperature cooling water will linger at the bottom of the water receiving pan 22 and cannot be discharged in time. Figure 1 , Figure 5 and Figure 7As shown, in this embodiment, a plurality of strip-shaped overflow grooves 232 are provided on the outer peripheral wall of the overflow pipe 23, and all the overflow grooves 232 extend axially along the overflow pipe 23 to the overflow port 231, and the lengths of two adjacent overflow grooves 232 are different. The overflow grooves 232 of different lengths enable the cooling water at various depths of the water receiving tank 223 to flow out through the overflow pipe 23, thereby realizing rapid replacement of the cooling water and improving the heat exchange efficiency.

[0050] In order to further improve the heat dissipation efficiency of the refrigerant pipe 5, as Figure 8 As shown, the outer periphery of the refrigerant tube 5 is provided with a heat sink 54, and the heat sink 54 can be as follows Figure 8 The heat sink 54 shown as being arranged spirally around the outer circumference of the refrigerant tube 5 may also be dispersed into many small heat sinks evenly distributed around the outer circumference of the refrigerant tube 5. The heat sink 54 may be arranged only on the coil section 52, or on the inlet section 51 and the outlet section 53.

[0051] like Figure 1 As shown, the evaporative cooling oil circuit circulation system also includes an indoor heat exchanger (not shown in the figure) connected to the access section 51 of the refrigerant pipe 5, an oil separator 6 connected to the outlet section 53 of the refrigerant pipe 5, a compressor 7 connected to the oil separator 6, and a gas-liquid separator 8 connected to the compressor 7; the gas-liquid separator 8 is connected to the indoor heat exchanger, the liquid inlet of the compressor 7 is connected to the liquid outlet of the oil separator 6, the oil inlet of the compressor 7 is connected to the oil outlet of the oil separator 6, and the gas-liquid separator 8 is connected to the liquid outlet of the compressor 7; a one-way valve (not shown in the figure) is provided between the indoor heat exchanger and the access section 51.

[0052] The working principle of the evaporative cooling oil circuit circulation system of a refrigeration equipment in this embodiment is as follows:

[0053] The refrigerant circulates in the refrigerant circuit. At the indoor heat exchanger, the refrigerant changes from liquid to gas, absorbs heat, and lowers the indoor temperature. The high-temperature refrigerant after absorbing heat enters the water receiving pan 22 through the refrigerant pipe access section 51, which is located above the water receiving pan 22. It is first cooled by air under the action of the negative pressure fan 42. Then it enters the coil section 52 to exchange heat with the cooling water in the water receiving pan 22. The cooled refrigerant enters the outlet section 53, which is also located above the water receiving pan to keep away from the cooling water heated by the heat exchange. Under the action of the negative pressure fan 42, the temperature is lowered again (the cooling water on the surface of the outlet section 53 evaporates under the action of the negative pressure fan 42 and takes away the heat); under the action of the compressor, the low-temperature refrigerant first enters the oil separator 6 for oil-liquid separation, the separated lubricating oil enters the oil inlet of the compressor 7 through the oil outlet, and the separated refrigerant enters the liquid inlet of the compressor 7 through the liquid outlet of the oil separator 6. Under the action of the compressor 7, the refrigerant enters the gas-liquid separator 8 for gas-liquid separation, and the separated liquid refrigerant re-enters the indoor heat exchanger to cool the indoor space;

[0054] After the refrigerant pipe 5 exchanges heat with the cooling water in the water receiving pan 22, the heated cooling water flows out to the water collecting tank 21 in the lower chamber 11 through the overflow groove 232 and the overflow port 231. The high-temperature cooling water in the water collecting tank 21 is pumped into the water supply pipe 32 by the circulating water pump 31, and is dispersed into each water distribution pipe along the water supply pipe 32. The high-temperature cooling water in the water distribution pipe flows to the flooding platform 34 through the water outlet pipe 35 and the flooding groove 352. The flooding platform 34 disperses the high-temperature cooling water in a primary manner, and then flows into the water distribution plate 33. On the top surface, the diverter spokes 333 perform secondary dispersion on the high-temperature cooling water, and at the drain edge 332, the guide spokes 361 perform tertiary dispersion on the high-temperature cooling water, so that the high-temperature cooling water flows evenly along the surface of the guide plate 36 into the water inlet groove 415 of the evaporation plate 41; the wet curtain paper 412 in the evaporation plate 41 cooperates with the negative pressure fan 42 on the top of the frame 1 to evaporate and dissipate heat for the high-temperature cooling water; the cooled cooling water enters the water receiving tray 22 from the water outlet groove 416 and exchanges heat with the refrigerant pipe 5 again.

Claims

1. An energy-saving cooling device with an evaporative cooling coil mounted thereon, comprising a frame (1), wherein the frame (1) is provided with a water receiving pan (22) connected in series to a water circulation loop and a refrigerant pipe (5) connected in series to a refrigerant loop, characterized in that: The refrigerant tube (5) is coiled in the water receiving tray (22), and the coiling height of the refrigerant tube (5) is lower than the depth of the water receiving tray (22); The outer periphery of the water receiving pan (22) is provided with a water retaining edge (222); an overflow pipe (23) protruding from the top surface of the water receiving pan (22) is provided in the center of the water receiving pan (22); the top edge of the water retaining edge (222) is higher than the overflow port (231) of the overflow pipe (23); and a water receiving groove (223) for accommodating the refrigerant pipe (5) is formed between the overflow pipe (23) and the water retaining edge (222); The refrigerant pipe (5) is gradually coiled from the water retaining edge (222) of the water tank (223) to the overflow pipe (23); The water receiving pan (22) is provided with a refrigerant pipe inlet and a refrigerant pipe outlet, and the refrigerant pipe inlet and the refrigerant pipe outlet are both located on the outer periphery of the overflow pipe (23); The refrigerant pipe (5) comprises, in sequence, an inlet section (51) fixedly and sealingly installed at the refrigerant pipe inlet, a coil section (52) coiled in the water receiving tank (223), and an outlet section (53) fixedly and sealingly installed at the refrigerant outlet, wherein the inlet section (51), the coil section (52) and the outlet section (53) are integrally arranged; The inlet section (51) and outlet section (53) are both arranged in an inverted U shape, and the U-shaped bottoms of the inverted U-shaped inlet section (51) and the inverted U-shaped outlet section (53) are both above the liquid level of the water receiving tray (22).

2. The evaporative cooling coil mounted energy-saving cooling device according to claim 1, characterized in that: Strip-shaped overflow grooves (232) are provided in pairs on the outer peripheral wall of the overflow pipe (23), and the two overflow grooves (232) belonging to the same pair are symmetrically arranged on the overflow pipe (23); all the overflow grooves (232) extend axially along the overflow pipe (23) to the end opening of the overflow pipe (23), and the lengths of two adjacent overflow grooves (232) are different.

3. The energy-saving cooling device with an evaporative cooling coil as claimed in any one of claims 1 to 2, characterized in that: The water receiving tray (22) divides the space inside the frame (1) into a lower chamber (11) and an evaporation chamber (12) located above the lower chamber (11); the water circulation loop comprises a water collection and recovery mechanism (2), a water distribution mechanism (3) and an evaporation and heat dissipation mechanism (4) connected in series; the evaporation and heat dissipation mechanism (4) comprises at least three evaporation plates (41); all evaporation plates (41) surround the evaporation chamber (12); each evaporation plate (41) has a water inlet groove (415) at the top and a water outlet groove (416) at the bottom; the water receiving tray (22) is located below the water outlet groove (416); the water distribution mechanism (3) comprises: A water supply pipe (32) connected to the water collection and recovery mechanism (2); A plurality of water distribution pipes connected to the water supply pipe (32); A plurality of water distribution plates (33) are arranged corresponding to the water distribution pipes and the evaporation plates (41) respectively. The top surface of the water distribution plate (33) is provided with a water outlet hole (351) connected to the corresponding water distribution pipe and a water stop plate (37) protruding from the top surface of the water distribution plate (33). A water discharge edge (332) is formed on one side of the water distribution plate (33) away from the water stop plate (37). The water discharge edge (332) is connected to the water inlet groove (415) of the corresponding evaporation plate (41).

4. The energy-saving cooling device with evaporative cooling coil as claimed in claim 3, characterized in that: The top surface of the water diversion plate (33) is arched, and the arched top surface is arranged symmetrically about the center of the line connecting the midpoint of the drainage edge (332) and the center of the water outlet hole (351); between the water outlet hole (351) and the drainage edge (332), a diversion structure is provided on the top surface of the water diversion plate (33).

5. The evaporative cooling coil mounted energy-saving cooling device according to claim 4, characterized in that: The diversion structure comprises a flooding platform (34) protruding from the top surface of the water diversion plate (33), and the water outlet hole (351) is provided on the flooding platform (34); the top surface of the water diversion plate (33) is formed with a plurality of diversion spokes (333) distributed in a fan-shaped manner around the flooding platform (34), and all the diversion spokes (333) extend from the outer periphery of the flooding platform (34) to the water discharge edge (332), and a diversion channel (334) is formed between two adjacent diversion spokes (333); A guide plate (36) integrally arranged with the water diversion plate (33) is provided between the water discharge edge (332) and the water inlet groove (415); the guide plate (36) and the water diversion plate (33) extend in opposite directions; the diversion spokes (333) extend from the water discharge edge (332) to the edge of the guide plate (36); at least one guide spoke (361) is provided between adjacent diversion spokes (333); the guide spokes (361) extend from the edge of the guide plate (36) to the water discharge edge (332); and guide channels (362) are formed between two adjacent guide spokes (361) and between adjacent diversion spokes (333) and guide spokes (361); each guide channel (362) is provided with the same width.

6. The energy-saving cooling device with evaporative cooling coils as claimed in claim 5, characterized in that: The top surface of the water divider (33) is in the shape of an obtuse isosceles triangle, and the water stop plate (37) extends from the vertex of the isosceles triangle along the waist of the isosceles triangle to the two ends of the guide plate (36) and protrudes in front of the guide plate (36).

7. The energy-saving cooling device with evaporative cooling coils as claimed in claim 5, characterized in that: A recessed groove (331) located at the bottom of the flooding platform (34) is provided on the back of the water diversion plate (33), and a water outlet pipe (35) extending to the top surface of the flooding platform (34) is formed in the recessed groove (331), and the water outlet end of the water diversion pipe is sleeved outside the water outlet pipe (35) and embedded in the recessed groove (331); on the top surface of the flooding platform (34), a flooding groove (352) opened toward the diversion spoke (333) is formed on the side wall of the water outlet pipe (35).

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