Evaporator

Abstract

The utility model discloses an evaporator which comprises a tube shell and a flow adjusting device. A pair of end covers are connected to the two ends of the tube shell, a spiral baffle plate is arranged in the tube shell, a plurality of evaporation tubes are inserted into the spiral baffle plate, connectors with the same number as the evaporation tubes are arranged at the two ends of the tube shell, the evaporation tubes are connected with the connectors, and flow guide tubes are connected to the ends, away from the evaporation tubes, of the connectors; the flow adjusting device is installed on the end cover opening and comprises a flow dividing body, a cold fluid inlet and outlet is fixed to the flow dividing body, a supporting frame is fixed in the cold fluid inlet and outlet, a center shaft is fixed to the supporting frame, a plurality of rotating shafts are rotationally arranged on the center shaft, and first bevel gears are fixed to the ends, penetrating through the cold fluid inlet and outlet, of the rotating shafts. The first bevel gears are meshed with second bevel gears. Through the relevant structural design, the contact time of a cooling medium and an evaporation medium is effectively prolonged, the flow speed is slowed down, and the cooling effect of the evaporator is improved.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration technology, specifically relating to an evaporator. Background Technology

[0002] An evaporator is a device that converts liquid substances into gaseous substances. It is widely used in many fields such as refrigeration, air conditioning, chemical industry, and food processing. In a refrigeration system, the evaporator is one of the four major components of refrigeration. Its function is to achieve the cooling effect by evaporating liquid refrigerant at low temperatures and absorbing heat from the surrounding environment.

[0003] Currently, in the operation of evaporators, the evaporation tubes through which the cooling medium and evaporation medium flow have excessively high flow rates and short flow contact times, which affect the cooling effect of the evaporator.

[0004] Therefore, it is necessary to provide an evaporator to address the aforementioned technical problems.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide an evaporator that can solve the problems of excessively high flow rates and short contact times between the cooling medium and the evaporation medium.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides an evaporator, comprising: a shell and a flow regulating device;

[0008] The tube shell is connected to a pair of end caps at both ends. A spiral baffle is provided inside the tube shell. Several evaporation tubes are inserted into the spiral baffle. Both ends of the tube shell are provided with connectors that are the same number as the evaporation tubes. The evaporation tubes are connected to the connectors. A guide tube is connected to the end of the connector away from the evaporation tube. An end cap opening is cut at the end of the end cap away from the tube shell.

[0009] The flow regulating device is installed on the end cap. The flow regulating device includes a flow divider, on which a cold fluid inlet and outlet are fixed. A support frame is fixed inside the cold fluid inlet and outlet, and a central shaft is fixed on the support frame. Several rotating shafts are rotatably mounted on the central shaft. A first bevel gear is fixed at one end of each of the rotating shafts that passes through the cold fluid inlet and outlet. A second bevel gear meshes with the first bevel gear. A fixing ring is fixed at the end of the cold fluid inlet and outlet away from the flow divider, and a connecting ring is provided on the side of the fixing ring away from the cold fluid inlet and outlet.

[0010] In one or more embodiments of this utility model, flanges are fixedly connected to the pipe shell and the end caps for connecting the pipe shell and a pair of end caps together. A first sealing ring is provided on the pipe shell, and a sealing ring groove is chiseled on the end cap. The first sealing ring is disposed in the sealing ring groove and plays a role in sealing and preventing leakage.

[0011] In one or more embodiments of this utility model, the end cap is equipped with a hot fluid inlet and outlet for the entry and exit of hot fluid, and both ends of the tube shell are drilled with through holes for hot fluid to flow from the end cap into the tube shell and then flow out from the tube shell into another end cap. The end cap opening is located on the cold fluid inlet and outlet.

[0012] In one or more embodiments of this utility model, a flow-dividing chamber is provided inside the flow-dividing fluid, and the side wall of the flow-dividing chamber is drilled with flow-dividing holes in the same number as the number of guide pipes. The flow-dividing holes are connected to the guide pipes, and the refrigerant flows from the flow-dividing chamber through the flow-dividing holes to the guide pipes.

[0013] In one or more embodiments of this utility model, mounting grooves are cut into the cold fluid inlet and outlet, and the first bevel gear and the second bevel gear are disposed in the mounting grooves. The first bevel gear and the second bevel gear are installed in the mounting grooves to play a protective role.

[0014] In one or more embodiments of this utility model, a fan-shaped baffle plate is fixed at one end of the rotating shaft located inside the inlet and outlet of the cold fluid. The flow rate of the refrigerant is adjusted by rotating the rotating shaft to drive the fan-shaped baffle plate to rotate. A handle is fixed on the second bevel gear. The second bevel gear is driven to rotate by rotating the handle. The second bevel gear drives the rotating shaft to rotate through the first bevel gear.

[0015] In one or more embodiments of this utility model, a circular groove is cut on the cold fluid inlet and outlet, and a slider is slidably disposed in the circular groove. The slider is fixedly connected to the second bevel gear, and the slider drives the second bevel gear to move along the trajectory of the circular groove.

[0016] In one or more embodiments of this utility model, a retaining groove is formed on the fixing ring for the first retaining body to pass through the retaining groove into the fixing ring. A second retaining body is fixed on the side of the fixing ring away from the connecting ring to hold the first retaining body. A connecting groove is formed on the second retaining body for a connecting block to be disposed therein.

[0017] In one or more embodiments of this utility model, a connecting block is fixed on the connecting ring, a first locking body is fixed on the connecting block, the connecting block is disposed in the connecting groove, the first locking body is locked on the second locking body, the first locking body is passed through the locking body groove through the fixing ring, and then the connecting ring is rotated to lock the first locking body on the second locking body, and the connecting block is rotated into the connecting groove, so that the connecting ring and the fixing ring are tightly locked together.

[0018] In one or more embodiments of this utility model, a second sealing ring is provided between the fixing ring and the connecting ring to provide a sealing and leak-proof function.

[0019] Compared with the prior art, this utility model, through related structural design, effectively increases the contact time between the cooling medium and the evaporation medium, slows down the flow rate, and improves the cooling effect of the evaporator. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of an evaporator according to one embodiment of the present invention;

[0022] Figure 2 This is a perspective view of another state of an evaporator in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the end cap structure in one embodiment of the present invention;

[0024] Figure 4 This is a structural schematic diagram of the end cap from another perspective in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the flow regulating device in one embodiment of the present invention;

[0026] Figure 6 for Figure 5 The structural diagram shown at point A in the middle;

[0027] Figure 7 This is a schematic diagram of the flow regulating device in another state according to one embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the flow regulating device from another perspective in one embodiment of the present invention;

[0029] Figure 9 for Figure 8 The structural diagram shown at point B in the middle;

[0030] Figure 10 This is a schematic diagram of the structure of the fan-shaped flow baffle in one embodiment of the present invention;

[0031] Figure 11 This is a perspective cross-sectional view of the flow regulating device in one embodiment of the present invention;

[0032] Figure 12 for Figure 11 The structural diagram shown at point C.

[0033] Explanation of key figure labels:

[0034] 1-Shell, 101-End cap, 102-Hot fluid inlet / outlet, 103-Flange, 104-Evaporator tube, 105-Spiral baffle, 106-End cap opening, 107-First sealing ring, 108-Guide pipe, 109-Through hole, 110-Sealing ring groove, 111-Connector, 2-Flow regulating device, 201-Diverter chamber, 202-Diverter hole, 203-Mounting groove, 204-Support frame, 205-Central shaft 206-Shaft, 207-First bevel gear, 208-Second bevel gear, 209-Thrust handle, 210-Circular groove, 211-Slider, 212-Fan-shaped baffle, 213-Flow divider, 214-Cold fluid inlet / outlet, 215-Connecting ring, 216-First retaining body, 217-Fixing ring, 218-Retaining body groove, 219-Connecting groove, 220-Second retaining body, 221-Second sealing ring, 222-Connecting block. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0036] like Figures 1 to 12 As shown, an evaporator in one embodiment of the present invention includes a shell 1 and a flow regulating device 2.

[0037] like Figures 1 to 4As shown, a pair of end caps 101 are connected to both ends of the shell 1. A spiral baffle 105 is installed inside the shell 1, and several evaporator tubes 104 are inserted on the spiral baffle 105. The spiral baffle 105 isolates the interior of the shell 1 into a spiral space, causing the hot fluid to flow in a spiral shape inside the shell 1. This increases the flow time of the hot fluid in the shell 1, slows down the flow rate of the hot fluid, and increases the contact time between the hot fluid and the evaporator tubes 104, thereby improving the cooling effect. Both ends of the shell 1 are provided with connectors 111, the same number as the evaporator tubes 104. The evaporator tubes 104 are connected to the connectors 111. The end of the connector 111 away from the evaporator tubes 104 is connected to a guide tube 108. The connectors 111 connect the evaporator tubes 104 and the guide tubes 108 together. The diameter of the evaporator tubes 104 is larger than the diameter of the guide tubes 108, which increases the contact area between the hot fluid and the cold fluid in the shell 1.

[0038] like Figures 1 to 4 As shown, the end cap 101, away from the tube shell 1, has an end cap opening 106 for installing the flow regulating device 2. Both the tube shell 1 and the end cap 101 are fixed with connecting flanges 103 to connect the tube shell 1 and the pair of end caps 101 together. The tube shell 1 is provided with a first sealing ring 107, and the end cap 101 has a sealing ring groove 110. The first sealing ring 107 is located within the sealing ring groove 110 and serves to seal and prevent leakage. The end cap 101 is equipped with a hot fluid inlet / outlet 102 for the entry and exit of the hot fluid. Both ends of the tube shell 1 have through holes 109 for the hot fluid to flow from the end cap 101 into the tube shell 1 and then out of the other end cap 101. The end cap opening 106 is located on the cold fluid inlet / outlet 214.

[0039] like Figures 5 to 12 As shown, the flow regulating device 2 is installed on the end cap 106. The flow regulating device 2 includes a flow divider 213, which connects several guide pipes 108 and cold fluid inlet / outlet 214. The cold fluid inlet / outlet 214 is fixed on the flow divider 213, and a support frame 204 is fixed inside the cold fluid inlet / outlet 214 for mounting a central shaft 205. The central shaft 205 is fixed on the support frame 204 for mounting a rotating shaft 206. Several rotating shafts 206 are rotatably mounted on the central shaft 205 for mounting a fan-shaped flow baffle 212 and a first bevel gear 207. A first bevel gear 207 is fixed to one end of each of the rotating shafts 206 that passes through the cold fluid inlet / outlet 214. Second bevel gears 208 mesh with the first bevel gears 207; rotating the second bevel gears 208 drives all the first bevel gears 207 to rotate together. A retaining ring 217 is fixed to the end of the cold fluid inlet / outlet 214 away from the flow divider 213 for connecting a connecting ring 215. A connecting ring 215 is provided on the side of the fixed ring 217 away from the cold fluid inlet / outlet 214. The connecting ring 215 is used to connect to the fixed ring 217 and to connect to an external refrigerant pipe.

[0040] like Figures 5 to 12 As shown, a flow distribution chamber 201 is provided inside the flow distribution chamber 213. The side wall of the flow distribution chamber 201 has flow distribution holes 202, the same number as the number of guide pipes 108. The flow distribution holes 202 are connected to the guide pipes 108, and the refrigerant flows from the flow distribution chamber 201 through the flow distribution holes 202 to the guide pipes 108. Mounting grooves 203 are carved on the cold fluid inlet and outlet 214. The first bevel gear 207 and the second bevel gear 208 are located in the mounting grooves 203, serving a protective function. A fan-shaped baffle plate 212 is fixed at one end of the rotating shaft 206 located inside the cold fluid inlet and outlet 214. The fan-shaped baffle plate 212 is rotated by rotating the rotating shaft 206, thereby adjusting the flow rate of the refrigerant. A handle 209 is fixed on the second bevel gear 208. The second bevel gear 208 is rotated by rotating the handle 209, and the second bevel gear 208 drives the rotating shaft 206 to rotate through the first bevel gear 207.

[0041] like Figures 5 to 12 As shown, a circular groove 210 is carved on the cold fluid inlet / outlet 214. A slider 211 is slidably disposed within the circular groove 210. The slider 211 is fixedly connected to the second bevel gear 208, and the slider 211 drives the second bevel gear 208 to move along the trajectory of the circular groove 210. A retaining ring 217 has a retaining groove 218 for the first retaining body 216 to pass through the retaining ring 217. A second retaining body 220 is fixed on the side of the retaining ring 217 away from the connecting ring 215 to hold the first retaining body 216. A connecting groove 219 is carved on the second retaining body 220 for the connecting block 222 to be disposed therein. A connecting block 222 is fixed to the connecting ring 215, and a first locking body 216 is fixed to the connecting block 222. The connecting block 222 is located in the connecting groove 219, and the first locking body 216 is engaged with the second locking body 220. The first locking body 216 is passed through the locking body groove 218 and then through the fixing ring 217. By rotating the connecting ring 215, the first locking body 216 is engaged with the second locking body 220, and the connecting block 222 rotates into the connecting groove 219, tightly locking the connecting ring 215 and the fixing ring 217 together. Both the first locking body 216 and the second locking body 220 are provided with a matching slope, which can clamp the connecting ring 215 and the fixing ring 217 when the connecting ring 215 is rotated. A second sealing ring 221 is provided between the fixing ring 217 and the connecting ring 215 to seal and prevent leakage.

[0042] Working principle: First, connect a pair of hot fluid inlet and outlet 102 to the hot fluid inlet and outlet pipes respectively. The hot fluid flows into the end cap 101 from the hot fluid inlet and outlet 102 at one end, and then flows into the tube shell 1 through the through hole 109. The hot fluid passes through the spiral channel separated by the right evaporator tube 104 in the tube shell 1, and then flows into the end cap 101 at the other end through the through hole 109 at the other end. Finally, it flows out from the other hot fluid inlet and outlet 102.

[0043] Then, a refrigerant pipe is connected to the connecting ring 215. The first clamping body 216 on the connecting ring 215 passes through the clamping body groove 218 and then through the fixing ring 217. The connecting ring 215 is then rotated so that the first clamping body 216 is clamped on the second clamping body 220, and the connecting block 222 is rotated into the connecting groove 219, tightly clamping the connecting ring 215 and the fixing ring 217 together. Then, the throttle 209 is turned to drive the second bevel gear 208 to rotate. The second bevel gear 208 drives the rotating shaft 206 to rotate through the first bevel gear 207. The rotating shaft 206 drives the fan-shaped baffle 212 to rotate, thereby adjusting the refrigerant flow rate.

[0044] During the refrigerant flow process, it first flows into the distribution chamber 201 from the cold fluid inlet / outlet 214, then flows into the guide pipe 108 through the distribution hole 202, and then flows into the evaporator pipe 104 from the guide pipe 108. When the liquid refrigerant flows through the guide pipe 108, it absorbs heat from the hot fluid in the end cover 101 and vaporizes into refrigerant gas. The refrigerant gas flows into the evaporator pipe 104 and exchanges heat fully with the hot fluid in the pipe shell 1. Finally, it flows out from the cold fluid inlet / outlet 214 at the other end. The refrigerant flow rate can be adjusted by turning the handle 209.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An evaporator, characterized in that, include: The tube shell has a pair of end caps connected to both ends. A spiral baffle is provided inside the tube shell, and a number of evaporation tubes are inserted into the spiral baffle. Both ends of the tube shell are provided with connectors that are the same number as the number of evaporation tubes. The evaporation tubes are connected to the connectors. A guide tube is connected to the end of the connector away from the evaporation tube. An end cap opening is cut at the end of the end cap away from the tube shell. A flow regulating device is installed on an end cap. The flow regulating device includes a flow divider, on which a cold fluid inlet and outlet are fixed. A support frame is fixed inside the cold fluid inlet and outlet, and a central shaft is fixed on the support frame. Several rotating shafts are rotatably mounted on the central shaft. A first bevel gear is fixed to one end of each of the rotating shafts that passes through the cold fluid inlet and outlet. A second bevel gear meshes with the first bevel gear. A fixing ring is fixed to the end of the cold fluid inlet and outlet away from the flow divider, and a connecting ring is provided on the side of the fixing ring away from the cold fluid inlet and outlet.

2. An evaporator according to claim 1, characterized in that, Both the tube shell and the end cap are fixed with connected flanges. The tube shell is provided with a first sealing ring, and the end cap is provided with a sealing ring groove. The first sealing ring is located in the sealing ring groove.

3. An evaporator according to claim 1, characterized in that, The end cap is equipped with a hot fluid inlet and outlet, and both ends of the tube shell are drilled with through holes. The end cap opening is located on the cold fluid inlet and outlet.

4. An evaporator according to claim 1, characterized in that, The fluid divider is provided with a flow divider chamber, and the side wall of the flow divider chamber is drilled with flow divider holes in the same number as the flow guide pipes. The flow divider holes are connected to the flow guide pipes.

5. An evaporator according to claim 1, characterized in that, The cold fluid inlet and outlet are provided with mounting grooves, and the first bevel gear and the second bevel gear are located in the mounting grooves.

6. An evaporator according to claim 1, characterized in that, A fan-shaped baffle is fixed at one end of the rotating shaft inside the inlet and outlet of the cold fluid, and a throttle is fixed on the second bevel gear.

7. An evaporator according to claim 1, characterized in that, A circular groove is cut into the inlet and outlet of the cold fluid, and a slider is slidably disposed in the circular groove. The slider is fixedly connected to the second bevel gear.

8. An evaporator according to claim 1, characterized in that, The fixing ring has a slot for a retaining body, and a second retaining body is fixed to the side of the fixing ring away from the connecting ring. The second retaining body has a connecting slot.

9. An evaporator according to claim 8, characterized in that, A connecting block is fixed on the connecting ring, and a first locking body is fixed on the connecting block. The connecting block is located in the connecting groove, and the first locking body is locked onto the second locking body.

10. An evaporator according to claim 1, characterized in that, A second sealing ring is provided between the fixed ring and the connecting ring.

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