CN210425661U

CN210425661U - Energy-saving cooling equipment with overhead evaporation cooling coil

Info

Publication number: CN210425661U
Application number: CN201822177583.1U
Authority: CN
Inventors: 倪仁建
Original assignee: Zhuji Feimante Environmental Protection Equipment Co ltd
Current assignee: Zhuji Feimante Environmental Protection Equipment Co ltd
Priority date: 2018-12-16
Filing date: 2018-12-24
Publication date: 2020-04-28
Anticipated expiration: 2028-12-24
Also published as: CN109931725A; CN109506400A; CN209763553U

Abstract

The utility model discloses an evaporation cold coil overhead energy-conserving refrigeration plant, this refrigeration plant include the frame, are equipped with the water collector of establishing ties on the water circulation return circuit in the frame and establish ties the refrigerant pipe on the refrigerant return circuit, and the refrigerant pipe coils and establishes in this water collector, and the degree of depth that highly is less than the water collector is established to the dish of refrigerant pipe. The water receiving tray has the advantages that the refrigerant pipe tray is directly arranged in the water receiving tray without a sealed environment, the structure is simple, cooling water cooled by the evaporation heat dissipation mechanism can exchange heat with refrigerant in the refrigerant pipe while falling into the water receiving tray, and the refrigerant pipe is rapidly cooled; meanwhile, as the water pan is in an open state, when cooling water does not enter the water pan, the refrigerant in the refrigerant pipe can exchange heat with the outside air; when the cooling water exchanges heat with the refrigerant in the refrigerant pipe, the temperature of the refrigerant can evaporate a part of the cooling water, so that the heat exchange efficiency is further improved, and the heat dissipation effect of the refrigerant pipe is enhanced.

Description

Energy-saving cooling equipment with overhead evaporation cooling coil

Technical Field

The utility model belongs to the technical field of refrigeration plant, concretely relates to energy-conserving cooling arrangement of evaporation cold coil overhead.

Background

In the prior art, a refrigeration device often uses a water circulation system and a heat exchanger to sufficiently cool a refrigerant, and cooling water needs to be cooled again after heat exchange with the refrigerant so as to circularly cool the refrigerant.

Chinese utility model patent for CN201720573344.0 discloses an evaporation formula condensation temperature regulating apparatus, and this equipment includes the frame, is equipped with down the cavity in the frame and is located the evaporation chamber above the cavity down, the evaporation chamber on be equipped with evaporation heat dissipation mechanism and be used for the water distribution mechanism that supplies water to evaporation heat dissipation mechanism, the cavity down in be equipped with and be used for carrying out the catchment recovery mechanism that retrieves the cooling water that flows through evaporation heat dissipation mechanism, water distribution mechanism, evaporation heat dissipation mechanism and catchment recovery mechanism establish ties and form water circulation circuit, water circulation circuit on have concatenated circulating water pump, water circulation circuit and the heat exchanger that sets up in the cavity down link to each other and can carry out the heat exchange through heat exchanger and refrigerant circulation circuit.

The evaporation heat dissipation mechanism on the water circulation loop comprises a plurality of evaporation plates for increasing the evaporation area and a negative pressure fan for accelerating the air flow of an evaporation chamber to form negative pressure, the evaporation plates are detachably connected to the rack, and the evaporation plates and the negative pressure fan surround the evaporation chamber; the evaporation plate comprises an evaporation plate frame, wet curtain laminated paper filled in the evaporation plate frame is arranged in the evaporation plate frame, an outer cover is arranged on the side face, away from the evaporation chamber, of the evaporation plate frame, a filtering partition plate is arranged between the outer cover and the evaporation plate frame, and a water inlet groove and a water outlet groove are respectively formed in the upper end and the lower end of the evaporation plate frame; the water distribution mechanism comprises a water supply pipe connected with the water collecting and recovering mechanism through a circulating water pump, the water supply pipe extends upwards into the evaporation chamber, a plurality of water distribution pipes which are connected end to end are connected to the water supply pipe, and the water distribution pipes are arranged in the water inlet tank.

The heat exchangers on the water circulation loop and the refrigerant circulation loop comprise hollow shell tubes, the shell tubes are arranged in a spiral shape, at least one refrigerant tube arranged along the axis of the shell tube is arranged in the shell tube, the shell is connected in series with the circulation loop, and the refrigerant tube is connected in series with the refrigerant loop. When the cooling water in the water circulation circuit fills the shell pipe, the refrigerant pipe passing through the shell pipe is surrounded by the cooling water, thereby achieving heat exchange between the cooling water and the refrigerant.

The evaporative condensing temperature adjusting device has the following disadvantages: (1) the cooling water entering the water supply pipe needs to flow through the water distribution pipes connected end to end firstly, and then flows out of water outlets formed in the pipe walls of the water distribution pipes to a water inlet groove horizontally arranged at the upper end of the evaporation plate frame; in order to ensure that the cooling water can fill the water distribution pipes, the opening size of the water outlet is generally small, and the flow rate of the cooling water is generally slow, impurities are easily accumulated in the water distribution pipes and the water inlet tank in the water flow state, so that the water outlet is often blocked and frequently overhauled; (2) the shell pipe of the heat exchanger not only has a closed hollow cavity, but also the shell pipe and the refrigerant pipe are arranged in a spiral shape, so that the manufacturing cost of the shell pipe and the refrigerant pipe is high; in addition, in the hollow closed shell pipe, the refrigerant pipe can only radiate heat through cooling water, and the radiating effect is poor.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide the evaporative cooling coil overhead energy-saving cooling equipment with a good refrigerant pipe heat dissipation effect.

In order to achieve the above purpose, the technical solution of the present application is as follows:

an energy-saving cooling device with an overhead evaporation cooling coil comprises a rack, wherein a water pan connected in series on a water circulation loop and a refrigerant pipe connected in series on a refrigerant loop are arranged in the rack, the refrigerant pipe is coiled in the water pan, and the coiling height of the refrigerant pipe is lower than the depth of the water pan.

The refrigerant pipe is directly coiled in the water receiving tray (instead of being coiled in the lower chamber and positioned in the heat exchanger), a sealed environment is not needed, the structure is simple, and cooling water cooled by the evaporation heat dissipation mechanism can exchange heat with the refrigerant in the refrigerant pipe while falling into the water receiving tray, so that the rapid cooling of the refrigerant pipe is realized; meanwhile, as the water pan is in an open state, when cooling water does not enter the water pan, the refrigerant in the refrigerant pipe can exchange heat with the outside air; when the cooling water exchanges heat with the refrigerant in the refrigerant pipe, the temperature of the refrigerant can evaporate a part of the cooling water, so that the heat exchange efficiency is further improved, and the heat dissipation effect of the refrigerant pipe is enhanced.

In the above energy-saving cooling device, the water pan has a water retaining surrounding edge at its outer periphery, an overflow pipe protruding from the top surface of the water pan is arranged at the center of the water pan, the top edge of the water retaining surrounding edge is higher than the overflow port of the overflow pipe, and a water receiving tank for accommodating a refrigerant pipe is formed between the overflow pipe and the water retaining surrounding edge. After the water receiving tank is filled with cooling water, the cooling water can flow out of the overflow port of the overflow pipe to the water collecting tank of the water collecting and recycling mechanism below the water receiving tray.

In the energy-saving cooling device arranged on the evaporation cooling coil, the refrigerant pipe is gradually coiled from the water retaining surrounding edge of the water receiving tank to the overflow pipe side. The water retaining surrounding side of the water receiving tank is provided with a larger circumference, and the refrigerant pipe is gradually coiled from the water retaining surrounding side to the overflow pipe side, so that the refrigerant pipe at the high-temperature end has a larger heat dissipation area, and the heat dissipation efficiency is improved.

In the energy-saving cooling device arranged on the evaporation cold coil, a refrigerant pipe joint inlet and a refrigerant pipe joint outlet are formed in the water receiving disc, and the refrigerant pipe joint inlet and the refrigerant pipe joint outlet are both positioned on the periphery of the overflow pipe;

the refrigerant pipe sequentially comprises an access section fixedly and hermetically arranged at the refrigerant pipe joint inlet, a coil pipe section coiled in the water receiving tank and a connection section fixedly and hermetically arranged at the refrigerant connection outlet, wherein the access section, the coil pipe section and the connection section are integrally arranged;

the access section and the connection section are arranged in an inverted U shape, and the U-shaped bottoms of the inverted U-shaped access section and the inverted U-shaped connection section are both positioned above the liquid level of the water pan. The water receiving tray is arranged above the liquid level of the water receiving tray in an inverted U shape, so that the access section (high-temperature section) can firstly dissipate heat under the action of a fan of the evaporation heat dissipation mechanism; the water receiving section is arranged above the liquid level of the water receiving disc in an inverted U shape, so that the water receiving section is far away from cooling water heated through heat exchange, and the cooling water is connected into a refrigerant loop after being subjected to heat dissipation again under the action of a fan of the evaporation heat dissipation mechanism; thereby further improving the heat dissipation effect of the refrigerant.

In the energy-saving cooling device arranged on the evaporative cooling coil, the outer peripheral wall of the overflow pipe is provided with strip overflow grooves in pairs, and two overflow grooves belonging to the same pair are symmetrically arranged on the overflow pipe; all overflow launders all extend to the tip opening part of overflow pipe along the overflow pipe axial, and the length of two adjacent overflow launders is different. After heat exchange with the refrigerant pipe, the cooling water in the water receiving tray is heated again, and if only the cooling water on the uppermost layer flows out through the overflow port, the high-temperature cooling water on the lower layer of the water receiving tray is retained in the water receiving tray, so that the heat dissipation effect of the refrigerant pipe is poor. And the different overflow launders of length make the cooling water that is in each degree of depth department of water receiving tank can flow through the overflow pipe, realize the quick replacement of cooling water to improve heat exchange efficiency. And the strip overflow launders arranged in pairs can further improve the rapid replacement of cooling water in the water receiving tank.

In the energy-saving cooling device arranged on the evaporative cooling coil, the water receiving disc divides the space in the frame into a lower chamber and an evaporation chamber above the lower chamber, the water circulation loop comprises a water collecting and recovering mechanism, a water distributing mechanism and an evaporative heat dissipation mechanism which are connected in series, the evaporative heat dissipation mechanism comprises at least three evaporation plates, all the evaporation plates surround the evaporation chamber, each evaporation plate is provided with a water inlet groove at the top end and a water outlet groove at the bottom end, and the water receiving disc is positioned below the water outlet groove; the water distribution mechanism comprises:

a water supply pipe connected to the water collecting and recovering mechanism;

a plurality of water distribution pipes connected with the water supply pipe;

the water distribution plate comprises a plurality of water distribution plates, wherein the water distribution plates are respectively arranged in one-to-one correspondence with the water distribution pipes and the evaporation plates, the top surfaces of the water distribution plates are provided with water outlets connected with the corresponding water distribution pipes and water stop plates protruding out of the top surfaces of the water distribution plates, one sides of the water distribution plates, far away from the water stop plates, are provided with water drainage edges, and the water drainage edges are connected with water inlet grooves of the corresponding evaporation plates.

According to the water distribution method, each water distribution pipe is independently connected with a water supply pipe, the number of the water distribution pipes is consistent with the number of the evaporation plates or is a multiple of the number of the evaporation plates, cooling water in the water distribution pipes firstly flows into the top surfaces of the water distribution plates from water outlet holes and then flows into water inlet grooves of the corresponding evaporation plates along the top surfaces through water discharge edges, in the whole water distribution process of the cooling water, the cooling water does not pass through any right-angle bend, the water outlet holes are equal to the diameters of the water distribution pipes, the cooling water flowing out of the water outlet holes is dispersed to the natural water discharge edges of the water distribution plates, the cooling water flows into the water inlet grooves from the whole water discharge edges, dirt is not easily accumulated on the surfaces of the water supply pipe, the water distribution pipes and the water distribution plates; even if the blockage occurs, only the water diversion pipe, the water outlet hole and/or the top surface of the water diversion plate need to be cleaned, and the overhauling cost is low.

In order to connect with the water inlet tank, the projection of the edge of the water discharge on the water inlet tank should be in a straight line consistent with the water inlet tank. This results in a triangular space between the discharge edge and the outlet opening, and the distances between the outlet opening and the respective portions of the discharge edge are different, which makes it difficult to uniformly disperse the cooling water to the respective portions of the discharge edge. Therefore, in the energy-saving cooling device arranged on the evaporative cooling coil, the top surface of the water distribution plate is arched, and the arched top surface is arranged in central symmetry relative to a connecting line between the midpoint of the water drainage edge and the circle center of the water outlet; between the water outlet hole and the water drainage edge, the top surface of the water distribution plate is provided with a flow distribution structure. After the top surface of the water diversion plate is set to be arched, the water drainage edge can still be connected with the water inlet tank, but the time required for cooling water flowing out of the water outlet hole to reach each part of the water drainage edge is consistent (the middle point of the water drainage edge is positioned at the top end of the arched top surface, the distance between the water outlet hole and the middle point of the water drainage edge is short, but the flow speed of the cooling water is slow, the flow speed is gradually increased from the middle point of the water drainage edge to the two ends of the water drainage edge), and the flow distribution structure can make the cooling water uniformly dispersed to the water drainage edge, so that the evaporation plate is conveniently and fully utilized, and the evaporation heat dissipation rate of.

In the energy-saving cooling device arranged on the evaporative cooling coil, the flow dividing structure comprises a water overflowing table convexly arranged on the top surface of the water dividing plate, and the water outlet hole is formed in the water overflowing table; a plurality of diversion spokes distributed around the water overflowing table in a fan-shaped divergence manner are formed on the top surface of the water diversion plate, all the diversion spokes extend to the water drainage edge from the outer periphery of the water overflowing table, and a diversion channel is formed between every two adjacent diversion spokes;

a guide plate which is integrated with the water distribution plate is arranged between the water drainage edge and the water inlet tank, the extending direction of the guide plate is opposite to that of the water distribution plate, and the flow distribution spoke extends from the water drainage edge to the edge of the guide plate; at least one flow guide spoke is arranged between the adjacent flow distribution spokes, and the flow guide spoke extends from the edge of the flow guide plate to the edge of the water drainage; flow guide channels are formed between two adjacent flow guide spokes and between the adjacent flow distribution spokes and the flow guide spokes, and the flow guide channels are arranged in an equal width mode.

The water overflowing table firstly primarily disperses the cooling water flowing out of the water outlet holes, and the diversion spokes secondarily disperse the cooling water; meanwhile, cooling water in the sub-runners can flow into the water inlet tank along the guide plates and cannot flow to the outer side of the water inlet tank from the draining edges, and the guide plates are also provided with guide spokes extending to the draining edges, because the area of the water overflowing table is small, the length of the draining edges is large, the guide spokes are inconvenient to be arranged too tightly at the periphery of the water overflowing table, and the loose guide spokes cannot ensure the same flow in all the sub-runners; and the guide spokes can divide the flow of cooling water in each sub-channel again, so that the flow in each guide channel is ensured to be consistent, and the cooling water is ensured to be uniformly dispersed into the water inlet tank.

In the energy-saving cooling device arranged on the evaporative cooling coil, the top surfaces of the water diversion plates are in an obtuse isosceles triangle shape, and the water stop plates extend to the two ends of the guide plate from the vertex of the isosceles triangle along the waist edges of the isosceles triangle and protrude out of the front of the guide plate. The water stop plate can prevent the cooling water flowing out of the water outlet from flowing out of the evaporating chamber, the water stop plate extends and protrudes in front of the guide plate to surround the cooling water flowing down along the guide plate, the cooling water is prevented from leaking, and the cooling water is ensured to flow into the water inlet tank completely.

In the energy-saving cooling device arranged on the evaporative cooling coil, the back surface of the water distribution plate is provided with an embedded groove at the bottom of the water diffusion platform, a water outlet pipeline extending to the top surface of the water diffusion platform is formed in the embedded groove, and the water outlet end of the water distribution pipe is sleeved outside the water outlet pipeline and embedded in the embedded groove; on the top surface of the water overflowing table, a water overflowing groove which is opened towards the diversion spokes is formed on the side wall of the water outlet pipeline. The caulking groove and the water outlet pipeline are convenient for the water diversion pipe and the water diversion plate to realize quick installation and disassembly, and the water diversion groove facing the water diversion spoke prevents the cooling water rushing out from the water outlet hole from rushing to the water stop plate to influence the diversion of the cooling water.

Compared with the prior art, the beneficial effects of the utility model are that:

Drawings

FIG. 1 is a schematic structural view of an energy-saving cooling device with an overhead evaporative cooling coil according to the present invention;

FIG. 2 is a schematic structural view of the water diversion plate of FIG. 1;

FIG. 3 is a schematic view of the water-diversion plate of FIG. 1 from another view angle;

FIG. 4 is a schematic structural view of the evaporating plate of FIG. 1;

FIG. 5 is a schematic view of the water pan of FIG. 1;

FIG. 6 is a schematic view of the manner in which the refrigerant tubes are coiled in the drip pan;

FIG. 7 is a schematic view of the refrigerant tube from another perspective;

fig. 8 is an enlarged view of the surface structure of the refrigerant tube.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Example 1

As shown in fig. 1, the energy-saving cooling device with the overhead evaporation cooling coil according to the embodiment includes a rack 1, and an evaporation cooling water path circulation system and an evaporation cooling oil path circulation system are disposed in the rack 1.

As shown in fig. 1, a lower chamber 11 and an evaporation chamber 12 located above the lower chamber 11 are formed in the frame 1, wherein the evaporation cold water path circulation system includes a water collection recovery mechanism 2, a water distribution mechanism 3 and an evaporation heat dissipation mechanism 4 connected in series, the water collection recovery mechanism 2 is disposed in the lower chamber 11, the water distribution mechanism 3 and the evaporation heat dissipation mechanism 4 are disposed in the evaporation chamber 12, the water distribution mechanism 3 is configured to convey the heated cooling water to the evaporation heat dissipation mechanism 4, the evaporation heat dissipation mechanism 4 performs evaporation temperature reduction on the heated cooling water, and the water collection recovery mechanism 2 is configured to recover the cooling water flowing through the evaporation heat dissipation mechanism 4.

As shown in fig. 1 and seen in fig. 4, 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 rack 1, and all the evaporation plates 41 enclose the evaporation chamber 12. Each evaporation plate 41 comprises an evaporation plate frame 411, wet curtain paper folding 412 filled in the evaporation plate frame 411 is arranged in the evaporation plate frame 411, an outer cover 413 is arranged on the outer side surface of the evaporation plate frame 411, a filtering partition plate 414 is arranged between the outer cover 413 and the evaporation plate frame 411, and the evaporation plate frame 411 is provided with a water inlet groove 415 at the top end and a water outlet groove 416 at the bottom end; wherein, the water inlet groove 415 is communicated with the water distribution mechanism 3, and the water outlet groove 416 is communicated with the water collection and recovery mechanism 2.

The evaporation heat dissipation mechanism 4 further comprises a negative pressure fan 42 arranged at the top of the rack 1, and the negative pressure fan 42 is used for extracting steam generated by the gasification of the high-temperature cooling water dispersed in the evaporation plate 41, so as to play a role in reducing the temperature of the high-temperature cooling water.

As shown in fig. 1, the water collecting and recycling mechanism 2 of the present embodiment includes a water collecting tank 21 in the lower chamber 11 and a water receiving tray 22 above the water collecting tank 21, the water receiving tray 22 is located right below the water outlet slot 416, the cooling water flowing out from the water outlet slot 416 is collected in the water receiving tray 22, and the evaporation chamber 12 and the lower chamber 11 are respectively located on the upper side and the lower side of the water receiving tray 22.

As shown in fig. 5, the water pan 22 of this embodiment includes a pan body 221, a water retaining rim 222 is provided on an outer periphery of the pan body 221, an overflow pipe 23 protruding from a top surface of the water pan 22 is provided in a center of the pan body 221, a top edge of the water retaining rim 222 is higher than an overflow port 231 of the overflow pipe 23, and a water receiving groove 223 is formed between the overflow pipe 23 and the water retaining rim 222.

As shown in fig. 1, and as can be seen from fig. 2 and 3, the water distribution mechanism 3 of this embodiment includes a water supply pipe 32 connected to the water collection tank 21 through a circulating water pump 31, the water supply pipe 32 extends upward (through the water receiving tray 22 or from the periphery of the water receiving tray 22) from the lower chamber 11 into the evaporation chamber 12, and is connected to four water distribution pipes (not shown) through a five-way connector (not shown), each water distribution pipe is connected to a water distribution plate 33, and each water distribution plate 33 is installed above the water inlet groove 415 of the corresponding evaporation plate 41.

As shown in fig. 2 and 3, the top surface of the water diversion plate 33 of the present embodiment is an obtuse isosceles triangle, at the vertex of the isosceles triangle, the top surface of the water diversion plate 33 is convexly provided with a water overflowing table 34, an embedded groove 331 located below the water overflowing table 34 is formed on the back surface of the water diversion plate 33, an outlet pipe 35 is formed in the embedded groove 331, the outlet pipe 35 extends reversely to the top surface of the water overflowing table 34, and the outlet hole 351 protrudes from the top surface of the water overflowing table 34; when the water distribution plate is installed, the water distribution pipe is sleeved outside the water outlet pipe 35 and is embedded in the embedded groove 331, so that cooling water in the water distribution pipe can flow to the top surface of the water distribution plate 33 through the water outlet pipe 35.

As shown in FIG. 2, a water overflowing groove 352 is formed on the side wall of the water outlet pipe 35 at one side of the water overflowing table 34; on the side facing the water distribution groove 352, the top surface of the water distribution plate 33 is formed with a drainage edge 332 at the bottom of the isosceles triangle, and 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 in accordance with the water inlet groove 415. This results in the drainage edge 332 and the outlet hole 351 forming a triangular area, and the distances between the outlet hole 351 and the respective portions of the drainage edge 332 are different, so that it is difficult to uniformly disperse the cooling water to the respective portions of the drainage edge 332. Therefore, in the present embodiment, the top surface of the water diversion plate 33 is arranged to be arched (as shown in fig. 2), and the arched top surface is symmetrically arranged about a connecting line between the midpoint of the water drainage edge 332 and the center of the water outlet hole 351; the drain edge 332 is provided with a guide plate 36 integrally provided 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 is connected to the water inlet groove 415. Between the flood 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 which are distributed around the flood platform 34 in a fan-shaped divergence manner, each diversion spoke 333 extends from the periphery of the flood platform 34 to the drainage edge 332 and then extends to the edge of the guide plate 36, and a diversion channel 334 is formed between the adjacent diversion spokes 333. The spacing between the diverging spokes 333 on the side of the drainage edge 332 is variable due to the area of the flood stand 34; therefore, in this embodiment, a plurality of flow guiding spokes 361 are further disposed on the flow guiding plate 36, each flow guiding spoke 361 extends from the edge of the flow guiding plate 36 to the drainage edge 332, and the flow guiding spokes 361 are disposed between the flow dividing spokes 333 to divide each sub-flow passage 334 into flow guiding passages 362 having equal widths. During water distribution, cooling water flows to the flood table 34 from the flood tank 352, the flood table 34 firstly disperses the cooling water in a first stage, the diversion spokes 333 disperse the cooling water in a second stage, and the diversion spokes 361 disperse the cooling water in a third stage, so that the cooling water is ensured to uniformly flow into the water inlet tank 415 along each part of the diversion plate 36.

On the side back to the water diversion tank 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, 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 flow guide plate 36 and protrudes in front of the flow guide plate 36, so that cooling water is surrounded, and the cooling water is ensured to flow into the water inlet tank 415 from the surface of the flow guide plate 36 along the water drainage edge 332.

As shown in fig. 1 and 6, the evaporation cold oil circuit circulation system includes a refrigerant pipe 5, the refrigerant pipe 5 is coiled in a water receiving tank 223 of a water receiving tray 22, a refrigerant pipe joint inlet and a refrigerant pipe joint outlet are arranged in the water receiving tank 223, and both the refrigerant pipe joint inlet and the refrigerant pipe joint outlet are positioned at the periphery of the overflow pipe 23; the refrigerant pipe 5 comprises an inlet section 51 fixedly and hermetically installed at the inlet of the refrigerant pipe joint, a coil section 52 coiled in a water receiving tank 223, and an outlet section 53 fixedly and hermetically installed at the outlet of the refrigerant pipe joint, wherein the inlet section 51, the coil section 52 and the outlet section 53 are integrally arranged.

As shown in fig. 6 and 7, in the present embodiment, the coil section 52 of the refrigerant pipe 5 is gradually coiled from the water retaining peripheral edge 222 of the water receiving tank 223 to the overflow pipe 23 side, and the connection section 51 is connected from the overflow pipe 23 side of the water receiving tank 223, so that the connection section 51 is configured in an inverted U shape, the U-shaped bottom of the inverted U-shaped connection section 51 is located above the liquid level of the water receiving tray 22, and one of the two arms of the U-shape is connected to the refrigerant pipe connection inlet, and the other arm is connected to the coil section 52. And the extension section 53 is also in the shape of an inverted U. The inverted U-shaped connecting part is arranged above the liquid level of the water pan 22, so that the high-temperature section of the access section 51 can radiate heat firstly under the action of a fan of the evaporation heat radiation mechanism 4; the inverted U-shaped water receiving tray 22 is arranged above the liquid level of the water receiving tray so that the receiving section 53 is far away from the cooling water heated through heat exchange, and the cooling water is connected into the evaporation cold oil path circulating system after being subjected to heat dissipation again under the action of the fan of the evaporation heat dissipation mechanism 4; thereby further improving the heat dissipation effect of the refrigerant.

The refrigerant pipe 5 exchanges heat with the cooling water in the water receiving tray 22, the cooling water in the water receiving tray 22 is heated again after the temperature of the refrigerant is lowered, and if the heated cooling water only flows out from the overflow port 231 at the end of the overflow pipe 23, a large amount of high-temperature cooling water wanders at the bottom of the water receiving tray 22 and cannot be discharged in time. Therefore, as shown in fig. 1, 5 and 7, in this embodiment, a plurality of strip-shaped overflow grooves 232 are formed in the outer peripheral wall of the overflow pipe 23, all the overflow grooves 232 axially extend to the overflow port 231 along the overflow pipe 23, and the lengths of two adjacent overflow grooves 232 are different. The different overflow launder 232 of length makes the cooling water that is in each degree of depth department of water receiving tank 223 can flow out through overflow pipe 23, realizes the quick replacement of cooling water to improve heat exchange efficiency.

In order to further improve the heat dissipation efficiency of the refrigerant tube 5, as shown in fig. 8, the refrigerant tube 5 has fins 54 on the outer periphery thereof, and the fins 54 may be spirally arranged around the outer periphery of the refrigerant tube 5 as shown in fig. 8, or may be distributed in a manner that a plurality of small fins are uniformly distributed on the outer periphery of the refrigerant tube 5. The cooling fins 54 may be provided only on the coil pipe section 52, or may be provided on the incoming section 51 and the outgoing section 53.

As shown in fig. 1, the evaporative cooling oil circuit cycle further includes an indoor heat exchanger (not shown in the drawings) connected to the inlet section 51 of the refrigerant pipe 5, an oil 6 connected to the outlet section 53 of the refrigerant pipe 5, a compressor 7 connected to the oil 6, and a gas-liquid separator 8 connected to the compressor 7; the gas-liquid separator 8 is connected with the indoor heat exchanger, a liquid inlet of the compressor 7 is communicated with a liquid outlet of the oil content 6, an oil inlet of the compressor 7 is communicated with an oil outlet of the oil content 6, and the gas-liquid separator 8 is communicated with a liquid outlet of the compressor 7; a check valve (not shown) is provided between the indoor heat exchanger and the inlet section 51.

The working principle of the evaporative cooling oil circuit circulation system of the refrigeration equipment in the embodiment is as follows:

the refrigerant circulates in the refrigerant circuit, at the indoor heat exchanger, the refrigerant changes from liquid state into gas state, absorbs heat, and reduces the indoor temperature; the high-temperature refrigerant after absorbing heat enters the water pan 22 through the refrigerant pipe access section 51, the access section 51 is positioned above the water pan 22, and air cooling is firstly carried out under the action of the negative pressure fan 42; then the refrigerant enters the coil pipe section 52 to exchange heat with the cooling water in the water pan 22, the cooled refrigerant enters the connection section 53, the connection section 53 is also positioned above the water pan to keep away from the cooling water heated due to heat exchange, and simultaneously, the refrigerant is cooled again under the action of the negative pressure fan 42 (the cooling water on the surface of the connection section 53 is evaporated under the action of the negative pressure fan 42 to take away heat); under the action of the compressor, the low-temperature refrigerant firstly enters the oil component 6 to separate oil, the separated lubricating oil enters an oil inlet of the compressor 7 through an oil outlet, the separated refrigerant enters a liquid inlet of the compressor 7 through a liquid outlet of the oil component 6, the refrigerant enters the gas-liquid separator 8 to separate gas and liquid under the action of the compressor 7, and the separated liquid refrigerant enters the indoor heat exchanger again to refrigerate the indoor space;

after the refrigerant pipe 5 is in heat exchange with cooling water in the water receiving tray 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 water distribution table 34 through the water outlet pipeline 35 and the water distribution groove 352, the water distribution table 34 performs primary dispersion on the high-temperature cooling water and then flows into the top surface of the water distribution plate 33, the flow distribution spokes 333 perform secondary dispersion on the high-temperature cooling water, and the flow guide spokes 361 perform tertiary dispersion on the high-temperature cooling water at the water discharge edge 332 so that the high-temperature cooling water uniformly flows into the water inlet groove 415 of the evaporation plate 41 along the surface; the wet curtain paper folding 412 in the evaporation plate 41 is matched with the negative pressure fan 42 at the top of the rack 1 to evaporate and dissipate heat of 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 overhead evaporation cooling coil comprises a rack (1), wherein a water receiving tray (22) connected in series on a water circulation loop and a refrigerant pipe (5) connected in series on a refrigerant loop are arranged in the rack (1), and the energy-saving cooling device is characterized in that the refrigerant pipe (5) is coiled in the water receiving tray (22), and the coiling height of the refrigerant pipe (5) is lower than the depth of the water receiving tray (22).

2. The evaporative cooling coil overhead energy-saving cooling device as claimed in claim 1, wherein the outer periphery of the water pan (22) is provided with a water-retaining surrounding edge (222), the center of the water pan (22) is provided with an overflow pipe (23) protruding from the top surface of the water pan (22), the top edge of the water-retaining surrounding edge (222) is higher than an overflow port (231) of the overflow pipe (23), and a water-retaining groove (223) for accommodating the refrigerant pipe (5) is formed between the overflow pipe (23) and the water-retaining surrounding edge (222).

3. The evaporative cooling coil overhead energy-saving cooling device as claimed in claim 2, wherein the refrigerant pipe (5) is gradually coiled from the water retaining surrounding edge (222) side of the water receiving tank (223) to the overflow pipe (23) side.

4. The evaporative cooling coil overhead energy-saving cooling device as claimed in claim 2, wherein the water pan (22) is provided with a refrigerant pipe joint inlet and a refrigerant pipe joint outlet, and the refrigerant pipe joint inlet and the refrigerant pipe joint outlet are both positioned at the periphery of the overflow pipe (23);

the refrigerant pipe (5) sequentially comprises an access section (51) fixedly and hermetically mounted at a refrigerant pipe joint inlet, a coil pipe section (52) coiled in a water receiving groove (223), and a connection section (53) fixedly and hermetically mounted at a refrigerant connection outlet, wherein the access section (51), the coil pipe section (52) and the connection section (53) are integrally arranged;

the water receiving tray is characterized in that the access section (51) and the connection section (53) are arranged in an inverted U shape, and the U-shaped bottoms of the inverted U-shaped access section (51) and the inverted U-shaped connection section (53) are both positioned above the liquid level of the water receiving tray (22).

5. The evaporative cooling coil overhead energy-saving cooling device as claimed in claim 2, wherein the outer peripheral wall of the overflow pipe (23) is provided with strip-shaped overflow grooves (232) in pairs, and the two overflow grooves (232) belonging to the same pair are symmetrically arranged on the overflow pipe (23); all overflow launders (232) axially extend to the opening at the end part of the overflow pipe (23) along the overflow pipe (23), and the lengths of two adjacent overflow launders (232) are different.

6. The evaporative cooling coil overhead energy-saving cooling device as claimed in any one of claims 1 to 5, wherein the water pan (22) divides the space in the rack (1) into a lower chamber (11) and an evaporation chamber (12) above the lower chamber (11), the water circulation loop comprises a water collecting and recovering mechanism (2), a water distributing mechanism (3) and an evaporative heat dissipating mechanism (4) which are connected in series, the evaporative heat dissipating mechanism (4) comprises at least three evaporation plates (41), all the evaporation plates (41) enclose the evaporation chamber (12), each evaporation plate (41) is provided with a water inlet groove (415) at the top end and a water outlet groove (416) at the bottom end, and the water pan (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 with the water supply pipe (32);

the water distribution plate comprises a plurality of water distribution plates (33) which are respectively arranged in one-to-one correspondence with the water distribution pipes and the evaporation plates (41), water outlet holes (351) connected with the corresponding water distribution pipes and water stop plates (37) protruding out of the top surfaces of the water distribution plates (33) are arranged on the top surfaces of the water distribution plates (33), water drainage edges (332) are formed on one sides, far away from the water stop plates (37), of the water distribution plates (33), and the water drainage edges (332) are connected with water inlet grooves (415) of the corresponding evaporation plates (41).

7. The evaporative cooling coil overhead energy-saving cooling device as claimed in claim 6, wherein the top surface of the water diversion plate (33) is arched, and the arched top surface is arranged in central symmetry with respect to a line connecting the midpoint of the water drainage edge (332) and the center of the water outlet hole (351); and a flow dividing structure is arranged on the top surface of the water dividing plate (33) between the water outlet hole (351) and the water draining edge (332).

8. The evaporative cooling coil overhead energy-saving cooling device as claimed in claim 7, wherein the flow dividing structure comprises a water overflowing table (34) convexly arranged on the top surface of the water dividing plate (33), and the water outlet hole (351) is formed in the water overflowing table (34); a plurality of diversion spokes (333) which are distributed around the water overflowing table (34) in a fan-shaped divergence manner are formed on the top surface of the water diversion plate (33), all the diversion spokes (333) extend to a water drainage edge (332) from the periphery of the water overflowing table (34), and a diversion channel (334) is formed between every two adjacent diversion spokes (333);

a guide plate (36) which is integrated with the water diversion plate (33) is arranged between the water drainage edge (332) and the water inlet groove (415), the extending directions of the guide plate (36) and the water diversion plate (33) are opposite, and the flow diversion spokes (333) extend from the water drainage edge (332) to the edge of the guide plate (36); at least one flow guide spoke (361) is arranged between every two adjacent flow distribution spokes (333), and the flow guide spoke (361) extends from the edge of the flow guide plate (36) to the water drainage edge (332); flow guide channels (362) are formed between two adjacent flow guide spokes (361) and between the adjacent flow dividing spoke (333) and the flow guide spoke (361), and the flow guide channels (362) are arranged in an equal width mode.

9. The evaporative cooling coil overhead energy-saving cooling device as claimed in claim 8, wherein the top surface of the water diversion plate (33) is 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 both ends of the deflector (36) and protrudes in front of the deflector (36).

10. The evaporative cooling coil overhead energy-saving cooling device as claimed in claim 8, wherein an embedded groove (331) at the bottom of the water overflowing table (34) is formed in the back of the water dividing plate (33), a water outlet pipe (35) extending to the top surface of the water overflowing table (34) is formed in the embedded groove (331), and the water outlet end of the water dividing pipe is sleeved outside the water outlet pipe (35) and embedded in the embedded groove (331); on the top surface of the water overflowing table (34), a water overflowing groove (352) which is opened towards the flow dividing spoke (333) is formed on the side wall of the water outlet pipeline (35).