A multi-channel water chiller

Abstract

The present application relates to a multi-channel water chiller, which relates to the technical field of detection sample pretreatment, and includes a refrigeration device, a cooling box and a plurality of sample heat exchange channels; the refrigeration device includes a refrigerant evaporation tube, and the refrigerant evaporation tube is arranged in the cooling box to be able to cool the energy storage agent filled in the cooling box. The sample heat exchange channel includes a sample input tube, a sample heat exchange tube and a sample output tube that are sequentially connected to each other. A flow equalizing sleeve is arranged at the inlet end of the sample input tube. The sample heat exchange tubes are dispersedly arranged in the cooling box to be able to use the energy storage agent in the cooling box to cool the samples in the sample heat exchange tubes, and can improve the consistency and stability of the cooling effect of the sample gas in different channels.

Description

Technical Field

[0001] This application relates to the technical field of detection sample pretreatment, and particularly relates to a multi-channel water chiller. Background Art

[0002] Resins are usually polymerized from monomer materials at high temperatures. During the synthesis process of resins, the polymerization reaction of monomer materials usually generates certain reaction gases. The composition of the reaction gases can usually reflect the reaction state of resin synthesis. Therefore, during the resin synthesis process, samples of reaction gases are usually extracted from different sections of the resin synthesis equipment for real-time detection. Controlling the reaction conditions of different sections of the resin synthesis equipment according to the composition of the sample gas helps to control the reaction process at different stages of resin synthesis and ensure the quality of the obtained resin.

[0003] The sample gas extracted from the resin synthesis equipment usually has a very high temperature. Directly detecting the composition is likely to damage the analytical instrument and affect the accuracy of the detection result. Therefore, before detecting the sample gas, it is usually necessary to quickly cool the sample gas to a set temperature. The cooling of the sample gas is usually carried out using a water chiller. The water chiller can quickly cool the sample gas through water and utilize the high specific heat capacity of water to ensure the stability of the temperature of the sample gas.

[0004] Existing water chillers usually only have one sample gas cooling channel. During the resin synthesis process, it is usually necessary to perform real-time detection on the gases generated in multiple different sections of the resin synthesis equipment. At this time, multiple water chillers need to be set up simultaneously, which not only occupies a large amount of space but also makes it difficult to perform unified temperature control on multiple sample gases from different sections. There are also water chillers with multiple sample gas channels. Each sample gas channel is connected to different sections of the resin synthesis equipment through pipelines. The pressures of the sample gases from different sections are affected by different factors and are different from each other. The flow rates of the sample gases passing through different channels are also different, which affects the consistency and stability of the cooling effects of the sample gases in different channels. Summary of the Invention

[0005] In order to improve the consistency and stability of the cooling effects of the sample gases in different channels, this application provides a multi-channel water chiller.

[0006] The multi-channel water chiller provided by this application adopts the following technical solutions:

[0007] A multi-channel water cooler includes a refrigeration device, a cooling box, and multiple sample heat exchange channels; the refrigeration device includes a refrigerant evaporation tube disposed inside the cooling box to be able to cool the energy storage agent filled in the cooling box, the sample heat exchange channel includes a sample input tube, a sample heat exchange tube, and a sample output tube that are sequentially connected to each other, a flow equalizing sleeve is provided at the inlet end of the sample input tube, and the sample heat exchange tubes are dispersedly arranged inside the cooling box to be able to use the energy storage agent inside the cooling box to cool the samples in the sample heat exchange tubes.

[0008] By adopting the above technical solution, by using the refrigerant evaporation tube and the sample heat exchange tubes disposed inside the cooling box, it is possible to use the evaporation of the refrigerant in the refrigerant evaporation tube to cool the energy storage agent filled in the cooling box, cool the energy storage agent to a set temperature, and use the energy storage agent with a large capacity and a high specific heat capacity to ensure the stability of the temperature of the energy storage agent, and use the energy storage agent to cool the samples in different channels of the multiple sample heat exchange tubes, which is beneficial to improving the consistency of the cooling temperatures of the samples in different channels; by using the flow equalizing sleeves respectively disposed at the inlet ends of the dispersedly arranged sample input tubes, it is possible to reduce the influence of the sample gas pressure input into different channels on the sample flow rate, improve the consistency and stability of the sample flow rates in different channels and at different times in the same channel, thereby improving the consistency and stability of the cooling effects of the sample gases in different channels.

[0009] In a specific feasible embodiment, a plurality of flow path brackets are spaced apart inside the cooling box, an upper cross beam is provided on the upper part of the flow path bracket, a plurality of input tube holes are provided on the top wall of the cooling box, and the plurality of input tube holes are grouped and arranged above the upper cross beam. The sample input tube passes through the input tube hole and enters the cooling box and is fixed on the upper cross beam. The sample heat exchange tube is arranged in a spiral shape and is connected below the sample input tube. A plurality of output tube holes corresponding to the input tube holes respectively are provided on the bottom wall of the cooling box. The sample output tube is arranged below the sample heat exchange tube and extends outside the cooling box through the output tube hole, and a sealing ring is provided between the sample output tube and the output tube hole.

[0010] By adopting the above technical solution, by fixing the sample input tube on the upper cross beam and arranging the sample heat exchange tube in a spiral shape, it is possible to buffer the thermal expansion of the sample input tube and the sample output tube through the expansion and contraction of the spiral sample heat exchange tube, ensure the stability of the connection between each sample heat exchange channel and the cooling box, and improve the heat exchange effect between the sample heat exchange tube and the energy storage agent inside the cooling box.

[0011] In a specific feasible implementation, an evaporation tube hole is provided on one side of the cooling box. The refrigerant evaporation tube enters the cooling box through the evaporation tube hole and is coiled between each group of the sample heat exchange tubes. An evaporation tube support is arranged in the cooling box. The evaporation tube support is arranged between the flow path supports. A lower cross beam is arranged at the lower part of the evaporation tube support. The refrigerant evaporation tube is fixed on the lower cross beam by a fixing clip.

[0012] By adopting the above technical solution, the refrigerant evaporation tube coiled between each group of sample heat exchange tubes can cool the energy storage agent around different sample heat exchange tubes, improving the temperature consistency of the energy storage agent around different sample heat exchange tubes. The arrangement that the refrigerant evaporation tube is fixed on the lower cross beam by a fixing clip can improve the position stability of the refrigerant evaporation tube in the cooling box and at the same time reduce the influence of the lower cross beam on the heat exchange between the refrigerant evaporation tube and the energy storage agent.

[0013] In a specific feasible implementation, a tee joint is provided at the lower end of the sample output tube. A sample output interface is connected to the side of the tee joint, and an automatic drainer is connected to the lower part.

[0014] By adopting the above technical solution, the tee joint connected between the sample output tube, the sample output interface and the automatic drainer can collect and discharge the condensed water in the sample gas through the automatic drainer while outputting the cooled sample gas to the sample output interface, ensuring the stable output of the sample gas and preventing the condensed water from affecting the detection result of the sample gas composition.

[0015] In a specific feasible implementation, an energy storage agent injection port is provided on one side of the cooling box. An energy storage agent discharge port is provided on the bottom wall of the cooling box. A drain pipe is arranged below the cooling box. The drain port of the automatic drainer is connected to the drain pipe. An emission control valve is connected between the energy storage agent discharge port and the drain pipe.

[0016] By adopting the above technical solution, the energy storage agent discharge port provided on the bottom wall of the cooling box and the emission control valve provided at the energy storage agent discharge port can discharge the energy storage agent in the cooling box after the work is completed, preventing the energy storage agent from causing corrosion of the cooling box. The drain pipe arranged below the cooling box can facilitate the discharge of the condensed water generated during the operation of the water cooler and the energy storage agent after the work is completed.

[0017] In a specific feasible implementation, an energy storage agent heat equalization device is further arranged in the cooling box. The energy storage agent heat equalization device is arranged at the bottom of the cooling box.

[0018] By adopting the above technical solution, the heat storage agent heat equalization device arranged at the bottom of the cooling box can promote the uniform flow of the heat storage agent in the cooling box, ensure the temperature uniformity of the heat storage agent at different positions in the cooling box, and improve the heat exchange effect between the heat storage agent and the refrigerant evaporation pipe and the sample heat exchange pipe.

[0019] In a specific feasible implementation, the heat storage agent heat equalization device includes a heat equalization gas pipe and an air flow connection pipe. The heat equalization gas pipe is fixed on the bottom wall of the cooling box, and a plurality of air vent holes are arranged at intervals on the pipe wall. One end of the air flow connection pipe is connected to the heat equalization gas pipe, and the other end penetrates out of the cooling box and is connected to a heat equalization gas valve arranged on the cooling box.

[0020] By adopting the above technical solution, by using a plurality of air vent holes arranged at intervals on the pipe wall of the heat equalization gas pipe, air bubbles can escape from different positions at the bottom of the cooling box, drive the flow of the heat storage agent, and improve the temperature uniformity of the heat storage agent at different positions. By using the heat equalization gas valve connected to the air flow connection pipe, the flow rate and on-off of the air flow flowing into the air flow connection pipe can be controlled, saving the consumption of the air flow while forming a good heat equalization effect of the heat storage agent.

[0021] In a specific feasible implementation, an air vent nozzle is connected to the air vent hole on the heat equalization gas pipe. The air vent nozzle includes a nozzle body, a sliding plug rod and a compression spring. One end of the nozzle body is provided with a plug rod hole and an air outlet hole, and the other end is provided with a throttling hole. One end of the sliding plug rod is provided with an air outlet pressing plate, and the other end is provided with a compression spring seat. The sliding plug rod passes through the plug rod hole so that the compression spring seat is located inside the nozzle body. The compression spring is sleeved on the sliding plug rod and is located between the compression spring seat and the nozzle body, so that the air outlet pressing plate closes the air outlet hole.

[0022] By adopting the above technical solution, the sliding plug rod arranged through the plug rod hole at the end of the nozzle body can slide under the push of the compression spring, driving the air outlet pressing plate to close the air outlet hole; and when the air flow continuously enters the nozzle body through the throttling hole, the air pressure inside the nozzle body increases, pushing the sliding plug rod to move and driving the air outlet pressing plate away from the air outlet hole, and the gas inside the nozzle body escapes through the air outlet hole, so that the air outlet hole is intermittently closed and opened, reducing the adhesion of air bubbles on the surfaces of the refrigerant evaporation pipe and the sample heat exchange pipe and interfering with the heat exchange effect while forming the heat equalization effect of the heat storage agent.

[0023] In a specific feasible implementation, the multi-channel water chiller of the present application further includes a frame, and the refrigeration device further includes a refrigeration device main body. Both the cooling box and the refrigeration device main body are arranged on the frame. The refrigeration device main body is arranged on one side of the cooling box, and the refrigerant evaporation pipe is connected to the refrigeration device main body; a controller is arranged on the cooling box, a temperature sensor is arranged in the cooling box, and the controller is connected to the temperature sensor and the refrigeration device main body.

[0024] By adopting the above technical solution, the arrangement of the cooling box and the refrigeration device main body on the frame can form a fixed position between the cooling box and the refrigeration device main body, facilitating the movement of the multi-channel water chiller of the present application; the controller connected to the refrigeration device main body and the temperature sensor can accurately control the cooling temperature of the energy storage agent and is beneficial to reducing the energy consumption of the refrigeration device.

[0025] In a specific feasible implementation, the flow equalizing sleeve includes a sleeve shell, a sliding orifice plate, a flow equalizing conical plug, a flow equalizing spring, a flow equalizing spring seat, a fixed orifice plate, and a spring seat ejector rod. The sliding orifice plate is slidably arranged at the inlet end inside the sleeve shell. A conical flow passage opening is arranged on the sliding orifice plate. The flow equalizing conical plug is arranged opposite to the conical flow passage opening and is fixed on the fixed orifice plate. The flow equalizing spring seat is arranged between the sliding orifice plate and the fixed orifice plate and is arranged along the inner side wall of the sleeve shell. The flow equalizing spring is arranged between the sliding orifice plate and the flow equalizing spring seat. A sample flow outlet and a plurality of ejector rod holes are arranged on the fixed orifice plate. The plurality of ejector rod holes are uniformly arranged in the peripheral area of the fixed orifice plate. One end of the spring seat ejector rod abuts against the flow equalizing spring seat, and the other end extends to the other side of the fixed orifice plate through the ejector rod hole. A connecting thread is arranged on the inner side wall of the outlet end of the sleeve shell and is connected to the sample input pipe through the connecting thread, so that the other end of the spring seat ejector rod abuts against the end of the sample input pipe.

[0026] By adopting the above technical solution, the sliding orifice plate slidably arranged at the inlet end of the sleeve shell can slide inside the sleeve shell according to the magnitude of the sample pressure, changing the valve opening size between the conical flow passage opening and the flow equalizing conical plug, thereby reducing the influence of the pressure magnitude on the sample flow rate and keeping the sample flow rate passing through the flow path stable; the spring seat ejector rod passing through the ejector rod hole on the fixed orifice plate and abutting against the flow equalizing spring seat can adjust the elastic force of the flow equalizing spring by adjusting the threaded connection depth between the sleeve shell and the sample input pipe, thereby adjusting the flow rate of the sample passing through the flow equalizing sleeve.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] By cooling the energy storage agent in the cooling box through a refrigeration device and then cooling the samples in multiple sample heat exchange channels through the energy storage agent, an efficient heat exchange can be formed between the multiple sample heat exchange channels and the refrigeration device. And through the large heat capacity of the energy storage agent, the stability and consistency of the cooling effect of the samples in the multiple sample heat exchange channels can be improved;

[0029] By arranging a flow equalizing sleeve at the inlet end of the sample input pipe, the influence of the gas supply pressure of the sample gas on the gas supply flow path can be reduced, the stability of the sample gas flow rate through the cooling box and the consistency of the sample gas flow rates through different flow paths can be ensured, and the stability and consistency of the cooling effect of the sample gas in the multiple flow paths can be improved;

[0030] By arranging a heat equalizing gas pipe at the bottom of the cooling box and arranging a gas escape nozzle at the gas escape port of the heat equalizing gas pipe, the gas slowly enters the nozzle body through the throttling hole. When the pressure is sufficient, it pushes the sliding plug rod, so that the gas intermittently escapes through the air outlet hole to push the energy storage agent to flow, which can ensure the temperature uniformity of the energy storage agent while reducing the influence of bubble attachment on the heat transfer effect between the refrigerant evaporation pipe and the sample heat exchange pipe and the energy storage agent. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of an embodiment of the present application.

[0032] Figure 2 It is a schematic diagram of the internal structure of the cooling box in an embodiment of the present application.

[0033] Figure 3 It is a schematic diagram of another perspective of the inside of the cooling box in an embodiment of the present application.

[0034] Figure 4 It is a schematic diagram of the structure below the cooling box in an embodiment of the present application.

[0035] Figure 5 It is a schematic diagram of the structure of the gas escape nozzle in an embodiment of the present application.

[0036] Figure 6 It is a schematic diagram of the structure of the flow equalizing sleeve in an embodiment of the present application.

[0037] Figure 7 It is a schematic diagram of the control principle of an embodiment of the present application.

[0038] Description of reference numerals: 1, refrigeration device; 11, refrigerant evaporation pipe; 12, main body of refrigeration device; 2, cooling box; 21, flow path bracket; 211, upper cross beam; 22, evaporation pipe bracket; 221, lower cross beam; 23, input pipe hole; 24, output pipe hole; 25, evaporation pipe hole; 26, energy storage agent injection port; 27, energy storage agent discharge port; 28, equalizing heat valve; 29, liquid level sight glass; 3, sample heat exchange flow path; 31, sample input pipe; 32, sample heat exchange pipe; 33, sample output pipe; 34, flow equalizing sleeve; 341, sleeve housing; 342, sliding orifice plate; 3421, conical flow through port; 343, flow equalizing conical plug; 344, flow equalizing spring; 345, flow equalizing spring seat; 346, fixed orifice plate; 3461, sample flow outlet; 3462, ejector rod hole; 347, spring seat ejector rod; 35, three-way connector; 36, sample output interface; 37, automatic drainer; 4, drain pipe; 41, discharge control valve; 5, energy storage agent heat equalizing device; 51, heat equalizing gas pipe; 52, air flow connecting pipe; 53, air vent nozzle; 531, nozzle body; 5311, plug rod hole; 5312, air outlet hole; 5313, throttle hole; 532, sliding plug rod; 5321, air outlet pressing plate; 5322, compression spring seat; 533, compression spring; 6, frame; 7, controller; 71, temperature sensor. Detailed implementation manners

[0039] The following describes in detail the specific implementation manners of the present application with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0040] In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship of the near-ground heterogeneous angle wind field lidar antenna of the present application during actual use. The description of the orientation and positional relationship of each component in the present application is the same.

[0041] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] An embodiment of the multi-flow path water chiller of the present application is as Figures 1 to 7As shown, it includes a refrigeration device 1, a cooling box 2, and multiple sample heat exchange flow paths 3. The refrigeration device 1 can be various devices that use the evaporation and liquefaction of refrigerants for refrigeration. A refrigerant evaporation tube 11 is provided in the refrigeration device 1, and the refrigerant evaporation tube 11 is arranged in the cooling box 2. Driven by the refrigeration device 1, the refrigerant evaporates in the refrigerant evaporation tube 11, absorbing the heat on the refrigerant evaporation tube to form a refrigeration effect. Before the multi-channel water chiller of the present application works, a certain amount of energy storage agent needs to be injected into the cooling box 2 so that the refrigerant evaporation tube 11 is immersed in the energy storage agent. The energy storage agent can use various suitable liquid materials with a relatively large specific heat capacity, such as water, ethylene glycol, etc. When the refrigeration device 1 works, the refrigerant evaporation tube 11 exchanges heat with the energy storage agent, reducing the temperature of the energy storage agent to an appropriate temperature value.

[0043] Each sample heat exchange flow path 3 includes a sample input tube 31, a sample heat exchange tube 32, and a sample output tube 33. The sample input tube 31 and the sample output tube 33 are respectively arranged through the wall of the cooling box 2, and a flow equalizing sleeve 34 is provided at the inlet end of the sample input tube 31. The sample heat exchange tube 32 is usually made of a material with good thermal conductivity such as copper. The sample heat exchange tube 32 is connected between the sample input tube 31 and the sample output tube 33. Multiple sample heat exchange tubes 32 are dispersedly arranged in the cooling box 2. After injecting the energy storage agent into the cooling box 2, multiple sample heat exchange tubes 32 are all immersed in the energy storage agent.

[0044] High-temperature sample gases from different sections of the resin synthesis equipment respectively flow into the sample input tube 31 through a flow equalizing sleeve 34 on one or a group of different flow paths. When flowing through the corresponding sample heat exchange tube 32, heat exchange is carried out between the sample heat exchange tube 32 and the energy storage agent, so that the temperature of the sample gas is quickly reduced to a temperature close to that of the energy storage agent. The cooled sample gas flows out of the cooling box 2 through the sample output tube 33 and is transported to an analytical instrument for component detection. The flow equalizing sleeve 34 can reduce the change in the sample gas flow rate caused by different pressures of the sample gas extraction or the bending of the conveying pipeline, etc., which leads to different pressures of the sample gas flowing into the sample input tube 31, ensuring the stability of the cooling effect of the sample gas in the sample heat exchange tube 32 and the consistency of the cooling effects of the sample gas in different sample heat exchange tubes 32. The setting of using a large amount of energy storage agent in the cooling box 2 to absorb the cold energy on the refrigerant evaporation tube 11 and cool the sample gas in the sample heat exchange tube 32 can reduce the influence of the temperature changes of the refrigerant evaporation tube 11 and the sample heat exchange tube 32 on the cooling effect of the sample gas and improve the stability of the cooling effect of the sample gas.

[0045] In some embodiments of the multi-channel water chiller of the present application, such as Figure 2 and Figure 3As shown in the figure, a plurality of flow path brackets 21 are arranged inside the cooling box 2. The plurality of flow path brackets 21 extend to the opposite sides inside the cooling box 2 in the same direction and are evenly distributed inside the cooling box 2. An upper cross beam 211 is arranged on the upper part of each flow path bracket 21, and both ends of the upper cross beam 211 are respectively fixed on the columns at both ends of the flow path bracket 21.

[0046] A plurality of input pipe holes 23 are arranged on the top wall of the cooling box 2. The plurality of input pipe holes 23 are divided into multiple groups, and each group of input pipe holes 23 is respectively arranged above an upper cross beam 211. The sample input pipe 31 passes through the input pipe hole 23 and enters the cooling box 2, and is respectively fixed on the corresponding upper cross beam 211 to ensure the uniformity of the distribution of the multiple sample heat exchange pipes 32 inside the cooling box 2 and the stability of the position of each sample heat exchange pipe 32.

[0047] Each sample heat exchange pipe 32 is fixedly connected below a corresponding sample input pipe 31 and extends spirally towards the bottom of the cooling box 2. The spiral structure can increase the flow time of the sample gas inside the sample heat exchange pipe 32, increase the heat exchange area between the sample gas and the energy storage agent, and improve the cooling effect of the sample gas.

[0048] A plurality of output pipe holes 24 are arranged on the bottom wall of the cooling box 2. Each output pipe hole 24 is respectively arranged corresponding to an input pipe hole 23. The sample output pipe 33 is fixedly connected below the sample heat exchange pipe 32, and one end passes through the output pipe hole 24 and extends outside the cooling box 2 to transport the cooled sample gas out. A sealing ring is arranged between the sample output pipe 33 and the hole wall of the output pipe hole 24. While defining the position of the sample output pipe 33, the sealing ring can prevent the energy storage agent from leaking through the output pipe hole 24 outside the sample output pipe 33. The relative arrangement of the output pipe hole 24 and the input pipe hole 23 on the upper and lower wall parts of the cooling box 2 can make the sample heat exchange pipe 32 vertically arranged inside the cooling box 2, so that the sample gas is gradually cooled from the upper part to the lower part of the cooling box. The spirally arranged sample heat exchange pipe 32 can buffer the length change of the sample heat exchange flow path caused by thermal expansion and contraction, and ensure the stability of the fixed structures of the sample input pipe 31 and the sample output pipe 33.

[0049] In a preferred embodiment of the multi-flow path water cooler of the present application, as Figure 1 and Figure 3 shown, two evaporation pipe holes 25 are arranged on one side wall part of the cooling box 2. The refrigerant evaporation pipe 11 is arranged inside the cooling box 2, twists and turns between each pair of adjacent groups of sample heat exchange pipes 32, and both ends extend outside the cooling box 2 through the evaporation pipe holes 25 and are respectively connected to the throttle valve and the inlet of the compressor in the refrigeration device 1.

[0050] There are two evaporator tube brackets 22 arranged inside the cooling box 2. The two evaporator tube brackets 22 are respectively arranged between two flow path brackets 21 on both sides of the cooling box 2. A lower cross beam 221 is arranged at the lower part of the evaporator tube bracket 22. Both sides of the refrigerant evaporator tube 11 are respectively fixed on the lower cross beam 221 through fixing clips. The fixing clips have a certain thickness, so that the refrigerant evaporator tube 11 is at a certain distance from the lower cross beam 221, ensuring that the refrigerant evaporator tube 11 can be in full contact with the energy storage agent and improving the heat exchange effect between the refrigerant evaporator tube 11 and the energy storage agent.

[0051] In some embodiments of the multi-flow path water cooler of the present application, as Figure 4 shown, a three-way connector 35 is arranged at the lower end of the sample output tube 33. The three-way connector 35 is arranged on the outer side of the bottom of the cooling box 2. The upper end interface of the three-way connector 35 is connected to the sample output tube 33, a sample output interface 36 is connected at the side interface, and an automatic drainer 37 is connected at the lower end interface. The cooled sample gas output through the sample output tube 33 turns in the three-way connector 35 and is output to the analytical instrument through the sample output interface 36 for component detection; the condensed water formed by cooling in the sample gas enters the lower automatic drainer 37 for collection and discharge, preventing the condensed water from blocking the sample gas delivery pipeline or entering the analytical instrument along with the sample gas.

[0052] In a preferred embodiment of the multi-flow path water cooler of the present application, as Figure 4 shown, an energy storage agent injection port 26 is arranged on one side of the cooling box 2. The energy storage agent can be injected into the cooling box 2 through the energy storage agent injection port 26 as a heat exchange medium for heat transfer between the refrigerant evaporator tube 11 and the sample heat exchange tube 32. A liquid level sight glass 29 is also arranged at the upper part of the side wall of the cooling box 2. The liquid level height of the energy storage agent filled in the cooling box 2 can be observed through the liquid level sight glass 29.

[0053] A drain pipe 4 is arranged below the cooling box 2. The drain port of each automatic drainer 37 is connected to the drain pipe 4 through a pipeline. The energy storage agent discharged through the automatic drainer 37 flows into the drain pipe 4 and is collected and discharged through the drain pipe 4.

[0054] An energy storage agent discharge port 27 is also arranged on the bottom wall of the cooling box 2. The energy storage agent discharge port 27 is connected to the drain pipe 4 through a pipeline. A discharge control valve 41 is arranged on the pipeline connecting the energy storage agent discharge port 27 and the drain pipe 4. The on-off of the pipeline between the energy storage agent discharge port 27 and the drain pipe 4 can be controlled through the discharge control valve 41. Thus, after the multi-flow path water cooler of the present application stops working, the discharge control valve 41 can be opened to discharge the energy storage agent in the cooling box 2, preventing the energy storage agent from staying in the cooling box 2 for a long time and accelerating the corrosion of the cooling box 2.

[0055] In some embodiments of the multi-flow path water cooler of the present application, asFigure 2 As shown, a heat storage agent heat equalization device 5 is further provided in the cooling box 2. The heat storage agent heat equalization device 5 can be various devices that can promote the flow of the heat storage agent and improve the temperature uniformity of the heat storage agent. The heat storage agent heat equalization device 5 is arranged at the bottom position in the cooling box 2 and can drive the heat storage agent to flow from multiple positions on the bottom plate of the cooling box 2, making the temperature of the heat storage agent at different positions in the cooling box 2 more uniform.

[0056] In a preferred embodiment of the multi-channel water cooler of the present application, as Figure 2 shown, the heat storage agent heat equalization device 5 includes a heat equalization gas pipe 51 and a gas flow connection pipe 52. The heat equalization gas pipe 51 is fixed to the bottom wall of the cooling box 2 in a "U" shape, arranged between multiple sample output pipes 33, and a plurality of air escape ports are arranged at intervals on the pipe wall of the heat equalization gas pipe 51. One end of the gas flow connection pipe 52 is connected to the heat equalization gas pipe 51, and the other end passes through the cooling box 2 and is connected to a heat equalization gas valve 28 fixed on the side wall of the cooling box 2. The other end of the heat equalization gas valve 28 is connected to a high-pressure gas source. The compressed air in the high-pressure gas source enters the heat equalization gas pipe 51 through the gas flow connection pipe 52 under the control of the heat equalization gas valve 28 and escapes through a plurality of air escape ports, forming bubbles rising from the bottom of the heat storage agent, agitating the heat storage agent, and improving the temperature uniformity of the heat storage agent at different parts in the cooling box 2.

[0057] As a specific implementation manner of the multi-channel water cooler of the present application, as Figure 2 and Figure 5As shown in the figure, an air vent nozzle 53 is provided at each air vent on the side wall of the soaking gas pipe 51. The air vent nozzle 53 includes a nozzle body 531, a sliding plug rod 532, and a compression spring 533. The nozzle body 531 is integrally hollow cylindrical. One end of the nozzle body 531 is provided with a plug rod hole 5311 and at least one air outlet hole 5312, and the other end is provided with a throttling hole 5313. The end of the nozzle body 531 where the throttling hole 5313 is located is connected to the soaking gas pipe 51, so that the nozzle body 531 is communicated with the soaking gas pipe 51 through the throttling hole 5313. One end of the sliding plug rod 532 is provided with an air pressure plate 5321, and the other end is provided with a compression spring seat 5322. One end of the rod body of the sliding plug rod 532 passes through the plug rod hole 5311 and enters the nozzle body 531, and can slide in the plug rod hole 5311. The compression spring seat 5322 is fixed at the end of the sliding plug rod 532 located inside the nozzle body 531, and the air pressure plate 5321 is located outside the end of the nozzle body 531. The compression spring 533 is sleeved on the sliding plug rod 532. One end of the compression spring 533 abuts against the compression spring seat 5322, and the other end abuts against the inner wall of the end of the nozzle body 531. Under the elastic force of the compression spring 533, the air pressure plate 5321 is pressed tightly against the end of the nozzle body 531 to close the air outlet hole 5312. An elastic sealing layer such as rubber can also be provided on the side of the air pressure plate 5321 adjacent to the nozzle body 531 to improve the sealing performance of the air outlet hole 5312 and prevent the energy storage agent from infiltrating into the nozzle body through the air outlet hole 5312.

[0058] After the soaking gas valve 28 is opened, the compressed air enters the soaking gas pipe 51 through the air flow connecting pipe 52, and gradually enters the nozzle body 531 through the throttling hole 5313, so that the air pressure in the nozzle body 531 gradually increases. The pressure of the gas acts on the air pressure plate 5321 through the air outlet hole 5312. When the pressure is greater than the elastic force of the compression spring 533, it can push the sliding plug rod 532 to slide in the plug rod hole 5311, so that the air pressure plate 5321 leaves the air outlet hole 5312. At this time, the gas in the nozzle body 531 escapes through the air outlet hole 5312 to form bubbles to stir the energy storage agent; at the same time, the escape of the gas causes the air pressure in the nozzle body 531 to drop at a relatively fast speed, so that the pressure of the gas acting on the air pressure plate 5321 is less than the elastic force of the compression spring 533. The sliding plug rod 532 slides into the nozzle body 531 under the elastic force of the compression spring 533, and the air pressure plate 5321 closes the air outlet hole 5312 again, and the gas stops escaping. In this way, bubbles can be periodically escaped through the air vent nozzle 53. While stirring the energy storage agent to ensure the temperature uniformity of the energy storage agent, it can prevent too many bubbles from interfering with the heat exchange between the energy storage agent and the refrigerant evaporation tube 11 and the sample heat exchange tube 32, and can also reduce the energy consumption of the compressed air and the energy loss caused by the cold energy carried away by the bubbles from the energy storage agent.

[0059] In some embodiments of the multi-channel water-cooled machine of the present application, such as Figure 1As shown, a frame 6 is also provided in the multi-channel water chiller of the present application, and the cooling box 2 is fixed above the frame 6. The frame 6 forms an installation space of a certain size below the cooling box 2, which is convenient for the installation and arrangement of the lower end of the sample output pipe 33, the three-way connector 35, the automatic liquid drainer 37 and the drain pipe 4 below the cooling box 2.

[0060] The refrigeration device 1 further includes a refrigeration device main body 12, in which a compressor, a refrigerant condensation pipe, a throttle valve, a radiator, etc. are provided. The two ends of the refrigerant evaporation pipe 11 are respectively connected to the inlet of the compressor and the outlet of the throttle valve, the outlet of the compressor is connected to the refrigerant condensation pipe, and the other end of the refrigerant condensation pipe is connected to the inlet of the throttle valve. The compressor extracts the gaseous refrigerant in the refrigerant evaporation pipe 11 and outputs it to the refrigerant condensation pipe for compression. The refrigerant liquefies under high pressure in the refrigerant condensation pipe and releases heat. The radiator is arranged in the refrigerant condensation pipe to dissipate the heat released by the liquefaction of the refrigerant. The liquid refrigerant enters the refrigerant evaporation pipe 11 through the throttle valve. After passing through the throttle valve, the pressure in the refrigerant evaporation pipe 11 drops significantly, and the refrigerant vaporizes under low pressure and absorbs heat, so that the temperature of the energy storage agent in the cooling box 2 decreases.

[0061] The refrigeration device main body 12 is fixed on the frame 6 and is located on one side of the cooling box 2. Usually, the refrigeration device main body 12 is fixed at a relatively low position to ensure the stability of the position of the frame 6. Universal wheels can also be provided at the bottom of the frame 6 to facilitate moving the multi-channel water chiller of the present application to different analytical instruments for use.

[0062] A controller 7 can also be provided on the cooling box 2. The controller 7 can use various existing suitable controllers such as PLCs and single-chip microcomputers. A temperature sensor 71 is arranged in the cooling box 2. The temperature sensor 71 can detect the real-time temperature of the energy storage agent and transmit the detection signal to the controller 7 through a wire. The controller 7 controls the working state of the compressor according to the real-time temperature of the energy storage agent, maintains the temperature of the energy storage agent at the set temperature, and can reduce the energy consumption of the compressor.

[0063] In some embodiments of the multi-channel water chiller of the present application, as Figure 6 shown, the flow equalizing sleeve 34 includes a sleeve shell 341, a sliding orifice plate 342, a flow equalizing conical plug 343, a flow equalizing spring 344, a flow equalizing spring seat 345, a fixed orifice plate 346 and a spring seat ejector rod 347. The sleeve shell 341 is arranged in a cylindrical shape. One end of the sleeve shell 341 is connected to the sample input pipe 31, and the other end is provided with an input connection port.

[0064] The sliding orifice plate 342 and the fixed orifice plate 346 are respectively arranged at both ends inside the casing 341, wherein the fixed orifice plate 346 is fixed at the outlet end of the casing 341, the sliding orifice plate 342 is located on the inlet side of the fixed orifice plate 346, and can slide between the fixed orifice plate 346 and the input connection port. A conical flow-through port 3421 is arranged in the middle of the sliding orifice plate 342, and the small end of the conical flow-through port 3421 faces the inlet end of the casing 341. The flow equalizing conical plug 343 is arranged in a frustum shape, and the large end of the flow equalizing conical plug 343 is fixed in the middle of the fixed orifice plate 346 through a fixing rod, so that the small end of the flow equalizing conical plug 343 passes through the conical flow-through port 3421 and is arranged inside the conical flow-through port 3421.

[0065] The flow equalizing spring seat 345 is arranged in an annular shape, the flow equalizing spring seat 345 is installed between the sliding orifice plate 342 and the fixed orifice plate 346, and the outer side wall is arranged close to the inner side wall of the casing 341, so that the flow equalizing spring seat 345 can axially slide inside the casing 341. The flow equalizing spring 344 is arranged between the sliding orifice plate 342 and the flow equalizing spring seat 345, and can simultaneously push the sliding orifice plate 342 to slide towards the input connection port direction, and push the flow equalizing spring seat 345 to slide towards the fixed orifice plate 346 direction.

[0066] Several sample flow outlets 3461 and a plurality of ejector rod holes 3462 are arranged on the fixed orifice plate 346, and the plurality of ejector rod holes 3462 are evenly arranged in the peripheral area of the fixed orifice plate 346 opposite to the end face of the sample input pipe 31. A plurality of spring seat ejector rods 347 are provided, each spring seat ejector rod 347 is inserted into an ejector rod hole 3462 and can slide in the ejector rod hole 3462. One end of the spring seat ejector rod 347 abuts against the flow equalizing spring seat 345, and the other end passes through the fixed orifice plate 346 and abuts against the end face of the sample input pipe 31. A connecting thread is arranged on the inner side wall of the outlet end of the casing 341, and is connected to the sample input pipe 31 through the connecting thread. Rotating the casing 341 can adjust the length of the end of the sample input pipe 31 extending into the casing 341, so as to adjust the position of the spring seat ejector rod 347 inside the casing 341.

[0067] The sample gas delivered to the input connector enters the housing 341 through the adjustment port formed by the conical flow port 3421 around the flow equalizing conical plug 343, and flows into the sample input pipe 31 through the sample flow outlet 3461. Since the total flow area of several sample flow outlets 3461 is much larger than the flow area of the adjustment port, the pressure of the sample gas in the input connector is also greater than the pressure in the housing 341. This pressure pushes the sliding orifice plate 342 towards the fixed orifice plate 346, and the movement of the fixed orifice plate 346 compresses the flow equalizing spring 344, increasing the thrust of the flow equalizing spring 344 on the sliding orifice plate 342 to balance the pressure of the sample gas it receives. At the same time, the movement of the sliding orifice plate 342 towards the fixed orifice plate 346 reduces the flow area of the adjustment port, and reaches a stable state after the position of the sliding orifice plate 342 stabilizes.

[0068] When the pressure of the sample gas delivered to the input connector increases, it pushes the sliding orifice plate 342 towards the fixed orifice plate 346, reducing the flow area of the adjustment port, so that the flow rate entering the housing 341 through the adjustment port remains stable; when the pressure of the sample gas delivered to the input connector decreases, the sliding orifice plate 342 moves towards the input connector under the push of the flow equalizing spring 344, increasing the flow area of the adjustment port, also making the flow rate entering the housing 341 through the adjustment port remain stable. This can reduce the influence of the supply pressure of the sample gas on the supply flow rate, make the flow rate of the sample gas passing through the sample heat exchange tube 32 stable, and thus keep the cooling effect of the sample gas stable. By providing a flow equalizing sleeve 34 on the sample input pipe 31 of each sample heat exchange flow path 3, the influence of the pressure of the sample gas input into different sample heat exchange flow paths 3 on the flow rate can be reduced, and the balance of the flow rates of the sample gas input into different sample heat exchange flow paths 3 can be improved.

[0069] The multi-flow path water cooler of the present application can also be used to cool multi-flow path liquid samples, or even partial gaseous samples and partial liquid samples, and has the above effects.

[0070] In the description of the present invention, the description referring to terms such as "one embodiment", "specific embodiment", "preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0071] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A multi-channel water cooler, characterized in that: It comprises a refrigeration device (1), a cooling box (2) and a plurality of sample heat exchange flow paths (3); The refrigeration device (1) comprises a refrigerant evaporation tube (11), the refrigerant evaporation tube (11) being arranged in the cooling box (2) so as to cool an energy storage agent filled in the cooling box (2); the sample heat exchange flow path (3) comprising a sample input tube (31), a sample heat exchange tube (32) and a sample output tube (33) which are sequentially connected to each other; a flow equalizing sleeve (34) is arranged at the inlet end of the sample input tube (31); the sample heat exchange tubes (32) are dispersedly arranged in the cooling box (2) so as to utilize the energy storage agent in the cooling box (2) to cool the sample in the sample heat exchange tubes (32); The flow balancing sleeve (34) comprises a sleeve shell (341), a sliding orifice plate (342), a flow balancing conical plug (343), a flow balancing spring (344), a flow balancing spring seat (345), a fixed orifice plate (346) and a spring seat top rod (347); the sliding orifice plate (342) is slidably arranged at the inlet end of the sleeve shell (341); the sliding orifice plate (342) is provided with a conical flow opening (3421); the flow balancing conical plug (343) is arranged opposite to the conical flow opening (3421) and is fixed to the fixed orifice plate (346); the flow balancing spring seat (345) is arranged between the sliding orifice plate (342) and the fixed orifice plate (346) and is arranged along the inner side wall of the sleeve shell (341); the flow balancing spring (345) is provided with a spring seat top rod (347); 4) is arranged between the sliding orifice plate (342) and the flow-equalizing spring seat (345), the fixed orifice plate (346) is provided with a sample flow outlet (3461) and a plurality of push rod holes (3462), the plurality of push rod holes (3462) are evenly arranged in the peripheral area of ​​the fixed orifice plate (346), one end of the spring seat push rod (347) is in contact with the flow-equalizing spring seat (345), and the other end extends to the other side of the fixed orifice plate (346) through the push rod hole (3462), and a connecting thread is arranged on the inner side wall of the outlet end of the housing (341), and is connected to the sample input tube (31) through the connecting thread, so that the other end of the spring seat push rod (347) is in contact with the end of the sample input tube (31).

2. The multi-channel water chiller according to claim 1, characterized in that: A plurality of flow path supports (21) are arranged at intervals in the cooling box (2), an upper crossbeam (211) is arranged on the upper part of the flow path support (21), a plurality of input pipe holes (23) are arranged on the top wall of the cooling box (2), and the plurality of input pipe holes (23) are arranged in groups above the upper crossbeam (211), the sample input pipe (31) passes through the input pipe hole (23) to enter the cooling box (2) and is fixed on the upper crossbeam (211), the sample heat exchange pipe (32) is arranged in a spiral shape and is connected below the sample input pipe (31), a plurality of output pipe holes (24) corresponding to the input pipe holes (23) are arranged on the bottom wall of the cooling box (2), the sample output pipe (33) is arranged below the sample heat exchange pipe (32) and passes through the output pipe hole (24) to extend outside the cooling box (2), and a sealing ring is arranged between the sample output pipe (33) and the output pipe hole (24).

3. The multi-channel water chiller according to claim 2, characterized in that: An evaporation tube hole (25) is provided on one side of the cooling box (2), and the refrigerant evaporation tube (11) enters the cooling box (2) through the evaporation tube hole (25) and is coiled between each group of sample heat exchange tubes (32). An evaporation tube bracket (22) is provided in the cooling box (2), and the evaporation tube bracket (22) is arranged between the flow path brackets (21). A lower cross beam (221) is provided at the lower part of the evaporation tube bracket (22), and the refrigerant evaporation tube (11) is fixed to the lower cross beam (221) by a fixing clamp.

4. The multi-channel water chiller according to claim 2, characterized in that: A three-way connector (35) is provided at the lower end of the sample output tube (33), a sample output interface (36) is connected to the side of the three-way connector (35), and an automatic liquid drainer (37) is connected to the bottom.

5. The multi-channel water chiller according to claim 4, characterized in that: An energy storage agent injection port (26) is provided on one side of the cooling box (2), an energy storage agent discharge port (27) is provided on the bottom wall of the cooling box (2), a liquid discharge pipe (4) is provided below the cooling box (2), a liquid discharge port of the automatic liquid discharger (37) is connected to the liquid discharge pipe (4), and a discharge control valve (41) is connected between the energy storage agent discharge port (27) and the liquid discharge pipe (4).

6. The multi-channel water chiller according to claim 1, characterized in that: An energy storage agent heat equalizing device (5) is also provided in the cooling box (2), and the energy storage agent heat equalizing device (5) is arranged at the bottom of the cooling box (2).

7. The multi-channel water chiller according to claim 6, characterized in that: The energy storage agent heat equalizing device (5) comprises a heat equalizing air pipe (51) and an airflow connecting pipe (52); the heat equalizing air pipe (51) is fixed to the bottom wall of the cooling box (2), and a plurality of air escape ports are arranged at intervals on the pipe wall; one end of the airflow connecting pipe (52) is connected to the heat equalizing air pipe (51), and the other end passes through the cooling box (2) and is connected to a heat equalizing air valve (28) arranged on the cooling box (2).

8. The multi-channel water chiller according to claim 7, characterized in that: The gas escape port on the heat-averaging gas pipe (51) is connected to a gas escape nozzle (53), the gas escape nozzle (53) comprising a gas nozzle body (531), a sliding blocking rod (532) and a compression spring (533), one end of the gas nozzle body (531) is provided with a blocking rod hole (5311) and a gas outlet hole (5312), and the other end is provided with a throttling hole (5313), one end of the sliding blocking rod (532) is provided with a gas outlet pressure plate (5321), and the other end is provided with a throttling hole (5313). A compression spring seat (5322) is provided at the end, and the sliding blocking rod (532) is arranged through the blocking rod hole (5311), so that the compression spring seat (5322) is located in the air nozzle body (531), and the compression spring (533) is sleeved on the sliding blocking rod (532) and is located between the compression spring seat (5322) and the air nozzle body (531), so that the air outlet pressure plate (5321) closes the air outlet hole (5312).

9. The multi-channel water chiller according to any one of claims 1 to 8, characterized in that: The refrigeration device (1) further comprises a frame (6), wherein the refrigeration device (1) further comprises a refrigeration device body (12), wherein the cooling box (2) and the refrigeration device body (12) are both arranged on the frame (6), wherein the refrigeration device body (12) is arranged on one side of the cooling box (2), and the refrigerant evaporation pipe (11) is connected to the refrigeration device body (12); a controller (7) is arranged on the cooling box (2), a temperature sensor (71) is arranged in the cooling box (2), and the controller (7) is connected to the temperature sensor (71) and the refrigeration device body (12).

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