Refrigerant water removal device

Abstract

The present invention discloses a refrigerant water removal device, comprising a storage tank, a refrigerant delivery pump, a filtering system and a cooler; the bottom of the storage tank is connected to the refrigerant delivery pump, and the other end of the refrigerant delivery pump is equipped with a filtering system; the output end of the filtering system is equipped with a cooler, and the output end of the cooler is connected to the top of the storage tank; wherein the refrigerant in the storage tank is transported to the filtering system for water removal by the refrigerant delivery pump connected to the bottom of the storage tank as a power, and then cooled by the cooler, and the cooled refrigerant returns to the storage tank from the top. This embodiment can solve the problems of low efficiency and limited water removal capacity of existing refrigerants.

Description

Technical Field

[0001] The invention relates to the technical field of automated production, and in particular to a refrigerant water removal device. Background Art

[0002] In industrial refrigeration systems, various industrial refrigeration machine manufacturers have clear requirements for the water content of refrigerants, which needs to be controlled below 25 parts per million (ppm). When designing the refrigeration system, only a disposable water removal filter and a moisture detector are installed at the filling port. After the refrigeration system has been running for a long time, moisture in the air will enter the refrigeration system due to leakage of the system, resulting in excessive water content in the refrigerant, which will cause the heat exchange efficiency of the evaporator in the refrigeration system to decrease, and ice blockage and other problems will occur.

[0003] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0004] At present, the main method of removing water from refrigerants is to collect the refrigerant into the condenser. This method is only suitable for small refrigeration equipment, with low demand for refrigerant, and cannot meet the needs of large refrigeration systems. In addition, it is only slightly effective when the system is first charged, and cannot be used to treat refrigerants with excessive water content in the system. The water removal efficiency is low and the water removal capacity is limited. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a refrigerant water removal device, which can solve the problems of low efficiency and limited water removal capacity of existing refrigerant water removal.

[0006] To achieve the above-mentioned purpose, a refrigerant water removal device is provided according to an embodiment of the present invention, comprising a storage tank, a refrigerant delivery pump, a filtering system and a cooler; the bottom of the storage tank is connected to the refrigerant delivery pump, and the other end of the refrigerant delivery pump is equipped with a filtering system; the output end of the filtering system is equipped with a cooler, and the output end of the cooler is connected to the top of the storage tank;

[0007] Among them, the refrigerant delivery pump connected to the bottom of the storage tank is used as a power to transport the refrigerant in the storage tank to the filtration system for water removal, and then it is cooled by the cooler, and the cooled refrigerant returns to the storage tank from the top.

[0008] Optionally, the filtration system includes multiple groups of filter cartridges equipped with water removal filter elements connected in parallel and / or in series.

[0009] Optionally, a pressure gauge is included, which is arranged on the top of the storage tank and is used to detect the pressure of the storage tank and the pipeline during the operation of the water removal device.

[0010] Optionally, a safety valve is included, which is arranged on the top of the storage tank to prevent overpressure in the storage tank.

[0011] Optionally, a liquid level meter is included, which is arranged on the side of the storage tank and is used to monitor the liquid level of the refrigerant in the storage tank.

[0012] Optionally, a filter is included, which is installed between the storage tank and the refrigerant delivery pump and is used to filter the refrigerant output from the storage tank.

[0013] Optionally, a moisture detection component is included, which is installed between the filter system and the cooler and is used to detect the moisture content in the refrigerant.

[0014] Optionally include:

[0015] According to the requirements for the detection accuracy of the moisture content in the refrigerant, select the corresponding instrument of the moisture detection component.

[0016] Optionally, the cooler is air-cooled or water-cooled, and the pipe is a finned tube.

[0017] Optionally, it includes: arranging valves on the pipelines between the various components of the refrigerant water removal device.

[0018] One embodiment of the above invention has the following advantages or beneficial effects: the present invention allows the refrigerant with excessive water content to circulate through the water removal filter element multiple times, reducing the water content in the refrigerant to below 25 ppm, which can solve the problem of excessive water content in the refrigerant in large-scale industrial and civilian refrigeration systems, and achieves the technical effects of low energy consumption, low investment, economy and environmental protection, and high refrigerant recovery rate in the refrigerant water removal process.

[0019] The further effects of the above-mentioned non-conventional optional manner will be described below in conjunction with the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention.

[0021] Figure 1 is a structural schematic diagram of a refrigerant water removal device according to an embodiment of the present invention;

[0022] Figure 2 4 is a schematic diagram of a process for removing water from a refrigerant according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0024] At least one embodiment of the present invention provides a refrigerant water removal device, which includes a storage tank, a refrigerant delivery pump, a filtering system and a cooler; the bottom of the storage tank is connected to the refrigerant delivery pump, and the other end of the refrigerant delivery pump is installed with the filtering system; the output end of the filtering system is installed with a cooler, and the output end of the cooler is connected to the top of the storage tank.

[0025] Among them, the storage tank can be used to store refrigerants with high water content in the refrigeration system. The refrigerant delivery pump is the power source of the refrigerant water removal device, which can make the refrigerant circulate and filter in the water removal filter element. The filtration system is the core of the entire water removal device, filtering the water in the refrigerant. In addition, the refrigerant delivery pump will generate heat during operation, and the refrigerant in the pipeline will also vaporize after long-term operation. The cooler is used to cool down to ensure the efficient operation of the equipment.

[0026] Preferably, the cooler can be air-cooled or water-cooled, or ordinary pipes can be replaced with finned tubes to increase the heat dissipation area.

[0027] In a preferred embodiment, multiple filter systems can be used in parallel and / or in series. For example, the filter system can be a filter cartridge with a dewatering filter element installed, and the filter system is designed by connecting multiple filter cartridges with dewatering filter elements in parallel or in series. This improves the filtration efficiency, and at the same time, the number of filter cartridges with dewatering filter elements installed and the selection and / or series connection method are adjusted according to the actual situation of the user's refrigerant quantity, filtration cycle, and filtration effect. Of course, dewatering filter elements of different specifications can be selected according to different refrigerants.

[0028] In addition, the present invention can be applied to other fields for filtering operations by changing the types of the water removal filter element, the filter cartridge and the refrigerant delivery pump.

[0029] It should be noted that refrigerant dehydration is to remove the refrigerant with high water content from the system by circulating filtration and then inject it back into the original system when the refrigeration system is shut down for maintenance. The shutdown for maintenance refers to the cessation of operation of the device or equipment for maintenance. Refrigerant refers to the medium material used to complete energy transfer in the refrigeration system. Refrigerant dehydration refers to the use of physical or other methods to remove the water contained in the refrigerant.

[0030] As some embodiments, the dehydration process of the refrigerant dehydration device of the present invention may include:

[0031] Step 1: Pump the refrigerant from the refrigeration system into the storage tank.

[0032] Step 2: Use the refrigerant delivery pump connected to the bottom of the storage tank as a power source to deliver the refrigerant to the filtration system for water removal.

[0033] Step three: After the dehydration operation is completed, the refrigerant is cooled by the cooler and returns to the storage tank from the top to complete the dehydration process.

[0034] In a preferred embodiment, the refrigerant water removal device may further include a pressure gauge, which is disposed on the top of the storage tank and is used to detect the pressure of the storage tank and the pipeline during the operation of the water removal device.

[0035] In addition, a safety valve can be installed on the top of the storage tank to prevent the tank from overpressure and play a safety protection role.

[0036] It is worth mentioning that a liquid level gauge can also be installed on the side of the storage tank to monitor the liquid level of the refrigerant in the storage tank.

[0037] As some further preferred embodiments, the refrigerant water removal device may further include a filter, which is installed between the storage tank and the refrigerant delivery pump and can filter out sediment, rust and other substances contained in the refrigerant output from the storage tank.

[0038] It is also worth mentioning that the refrigerant water removal device may also include a moisture detection component, which is installed between the filter system and the cooler and can detect the moisture content in the refrigerant. Preferably, the instrument of the moisture detection component can be selected according to the user's requirements for the detection accuracy of the moisture content in the refrigerant. For example: a moisture detector, an electronic instrument or other more sensitive detection instruments. Among them, the moisture detector refers to an instrument that can monitor the moisture changes in real time during the operation of the refrigerant water removal device.

[0039] Some other embodiments of the present invention provide a refrigerant water removal device, such as Figure 1 As shown, the refrigerant water removal device includes a storage tank 1, a pressure gauge 2, a safety valve 3, a liquid level meter 4, a filter 5, a refrigerant delivery pump 6, a filtering system 7, a moisture detector 8 and a cooler 9.

[0040] Among them, a pressure gauge 2 and a safety valve 3 are installed on the top of the storage tank, and a liquid level gauge 4 is installed on the side of the storage tank. A filter 5 is installed at the output end of the bottom of the storage tank 1, and the filter 5 is connected to the refrigerant delivery pump 6. The other end of the refrigerant delivery pump 6 is successively installed with a filter system 7, a moisture detection component 8 and a cooler 9, and the output end of the cooler 9 is connected to the top of the storage tank 1.

[0041] It is worth noting that the piping direction and valve configuration of the refrigerant water removal device of the present invention can be adjusted according to user needs.

[0042] As an example, the refrigerant water removal process of the present invention may include: Figure 2 As shown:

[0043] Step S201, pumping refrigerant from the refrigeration system into storage tank 1.

[0044] In the embodiment, the liquid level of the refrigerant in the storage tank 1 can be monitored by the liquid level meter 4. The pressure of the storage tank 1 and the pipeline during the operation of the water removal device can also be detected by the pressure gauge 2. If necessary, the pressure can be discharged through the safety valve 3 at the top of the storage tank 1.

[0045] Step S202, filtering the sediment, rust and other substances contained in the refrigerant output from the storage tank 1 through the filter 5 connected to the bottom of the storage tank 1.

[0046] In step S203, the filtered refrigerant is transported to the filtering system 7 by using the refrigerant transport pump 6 as a power to remove water.

[0047] In step S204, the moisture content of the refrigerant after the dehydration operation is detected by using the moisture detection component 8.

[0048] Step S205, after the detection is completed, it is cooled by the cooler 9 and returns to the storage tank 1 from the top to complete the water removal process.

[0049] In summary, the refrigerant water removal device provided in the embodiment of the present invention utilizes an efficient water removal filter element to perform intermittent treatment in cycles in batches to effectively reduce the moisture content in the refrigerant (for example, for fluorine-based refrigerants, such as refrigerants R507 and R134a, etc.), and can be applied to large refrigeration compressors, central air conditioners and other equipment that uses a large amount of refrigerant. The demand for refrigerants in refrigeration equipment is large and expensive. The water removal device allows the refrigerant to be reused, prevents internal corrosion of the equipment, improves the refrigeration effect, and saves the company's operating costs. The following three data are the results of sampling tests before the refrigerant is dehydrated, during dehydration, and after dehydration is completed, respectively, proving that the moisture content in the refrigerant has been reduced to a reasonable range after the refrigerant water removal device described in the present invention:

[0050]

[0051] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A refrigerant water removal device, characterized in that: It includes a storage tank, a refrigerant delivery pump, a filtering system and a cooler; the bottom of the storage tank is connected to the refrigerant delivery pump, and the other end of the refrigerant delivery pump is equipped with a filtering system; the output end of the filtering system is equipped with a cooler, and the output end of the cooler is connected to the top of the storage tank; the filtering system includes multiple groups of filter cartridges equipped with water removal filter elements connected in parallel and / or in series; Among them, the refrigerant delivery pump connected to the bottom of the storage tank is used as a power to transport the refrigerant in the storage tank to the filtration system for water removal, and then cooled by the cooler, and the cooled refrigerant returns to the storage tank from the top; The utility model comprises a filter, which is installed between the storage tank and the refrigerant delivery pump and is used for filtering the refrigerant output from the storage tank.

2. The refrigerant water removal device according to claim 1, characterized in that: It includes a pressure gauge, which is arranged on the top of the storage tank and is used to detect the pressure of the storage tank and the pipeline during the operation of the water removal device.

3. The refrigerant water removal device according to claim 1, characterized in that: A safety valve is included, which is arranged on the top of the storage tank to prevent the storage tank from overpressure.

4. The refrigerant water removal device according to claim 1, characterized in that: It includes a liquid level meter, which is arranged on the side of the storage tank and is used to monitor the liquid level of the refrigerant in the storage tank.

5. The refrigerant water removal device according to claim 1, characterized in that: It comprises a moisture detection component, which is installed between the filter system and the cooler and is used to detect the moisture content in the refrigerant.

6. The refrigerant water removal device according to claim 5, characterized in that: include: According to the requirements for the detection accuracy of the moisture content in the refrigerant, select the corresponding instrument of the moisture detection component.

7. The refrigerant water removal device according to claim 6, characterized in that: include: The cooler adopts air cooling or water cooling, and the pipeline is a finned tube.

8. The refrigerant water removal device according to any one of claims 1 to 7, characterized in that: include: Valves are provided on the pipelines between the various components of the refrigerant water removal device.

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