Cooler for improving the vacuuming capacity of a vacuum pump

Abstract

The present invention relates to the technical field of direct air cooling units and discloses a cooler for improving the vacuuming capacity of a vacuum pump, comprising: a main unit comprising a vacuum pump and a vacuum manifold arranged above the vacuum pump; a cooling unit comprising a cooling component arranged on the vacuum manifold, a spray component arranged on the cooling component, and a return component arranged on the cooling component. In the cooler for improving the vacuuming capacity of a vacuum pump, the arrangement of the cooling unit utilizes structures such as a cooler, a spray pump, and a serpentine condensate collection tube to condense and discharge the vapor in the vapor-air mixture drawn from the condenser, thereby reducing heat loss through vapor condensation within the liquid ring vacuum pump.This lowers the operating water temperature, effectively prevents cavitation in the vacuum pump, improves the suction performance of the vacuum pump, increases the extracted air volume and thereby improves the vacuum level inside the condenser.

Description

TECHNICAL AREA The present invention relates to the technical field of direct air cooling units, in particular a cooler for improving the vacuuming capability of a vacuum pump. STATE OF THE ART Liquid ring vacuum pumps use water as the working fluid to generate a vacuum and extract gases. In direct air cooling units, the vacuum is typically maintained by liquid ring vacuum pumps. The condenser, a key component of direct air cooling units, condenses steam into water for reuse in the cycle. In modern direct air cooling units, the condenser is usually directly connected to the liquid ring vacuum pump via piping. Although conventional direct air cooling units already perform a cooling function via condensers, rising ambient temperatures in summer lead to a reduced vapor condensation efficiency. This results in a significant portion of the water vapor in the condenser failing to condense. Consequently, the vapor-air mixture in the suction line of the liquid ring vacuum pump contains an excessive amount of water vapor, leading to increased flow resistance (with the water vapor accounting for the majority of this resistance), reduced flow velocity, and a lower suction volume for the vacuum pump. Simultaneously, the high-temperature vapor releases heat within the vacuum pump, increasing its operating temperature, intensifying impeller cavitation, and reducing the pumping capacity. Therefore, improvements are necessary. CONTENT OF THE PRESENT INVENTION The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly present some preferred embodiments. In this section, as well as in the summary of the description of the present application and the title of the invention, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the summary of the description, the title of the invention, and the like, and these simplifications or omissions may not be used to limit the scope of the present invention. In view of the aforementioned existing coolers for improving the vacuuming capacity of a vacuum pump, which suffer from a reduced condensation efficiency of the condenser at rising summer temperatures, resulting in a significant portion of the water vapor not being able to condense and consequently reducing the suction volume of the vacuum pump, the present invention is developed. One purpose of the present invention is to provide a cooler to improve the vacuuming capability of a vacuum pump in order to solve the problem that a reduced condensation efficiency of the condenser at rising summer temperatures results in a significant portion of the water vapor not being able to condense and consequently the suction volume of the vacuum pump being reduced. To solve the technical problem described above, the present invention uses the following technical solution: comprising: a main unit comprising a vacuum pump and a vacuum collecting line arranged above the vacuum pump; a cooling unit comprising a cooling component arranged on the vacuum collecting line, a spray component arranged on the cooling component and a return flow component arranged on the cooling component. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention comprises a cooling component arranged below the vacuum manifold, a left housing arranged on the cooler, a right housing arranged on the cooler, and a tangential inlet tube arranged on the cooler and connected to the vacuum manifold. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention consists in the cooling component further comprising a left connecting pipe and a right connecting pipe arranged on the cooler. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention consists in that a connecting air pipe connected to the vacuum pump is arranged on the left housing, wherein an air vent valve is arranged on the first air pipe, which is inclined tangentially. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention comprises a spray component comprising a control valve arranged on the left connecting pipe, a spray pipe arranged on the left connecting pipe and a spray pump arranged on the spray pipe. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention consists in the spray component further comprising a deionization water tube arranged on the spray pump and an atomizing nozzle arranged inside the cooler and connected to the left connecting tube. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention consists in that a spiral groove is arranged inside the cooler which is connected to the tangential inlet tube. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention consists in the return component comprising a manual valve arranged on the right connecting pipe and a return riser pipe arranged on the right connecting pipe. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention consists in the return component further comprising a serpentine condensate collecting pipe arranged on the return riser pipe and a drain pipe arranged on the serpentine condensate collecting pipe, wherein a condensate drain is arranged on the inner wall of the right connecting pipe. A preferred embodiment of the cooler for improving the vacuuming capability of a vacuum pump according to the present invention comprises a base body of the vacuum pump arranged below the connecting air pipe, an air inlet arranged on the base body of the vacuum pump and an air outlet arranged on the base body of the vacuum pump, wherein the air inlet is connected to the connecting air pipe. The present invention has the following advantages: With the arrangement of a cooling unit, structures such as a cooler, a spray pump, and a serpentine condensate collection tube are used to condense and discharge the vapor in the vapor-air mixture extracted from the condenser. This reduces heat loss through vapor condensation within the liquid ring vacuum pump. This lowers the operating water temperature, effectively prevents cavitation in the vacuum pump, improves the suction performance of the vacuum pump, increases the extracted air volume, and thereby improves the vacuum level within the condenser. BRIEF DESCRIPTION OF THE DRAWING To more clearly explain the technical solution in the embodiments of the present invention, the drawings to be used are briefly introduced below in the explanation of the embodiments. Obviously, the drawings described below show only some embodiments of the present invention. The person skilled in the art in this field can, provided no creative work is undertaken, derive other drawings from the accompanying drawings. Fig. 1 shows a schematic diagram of the overall structure of the present invention. Fig. 2 shows a schematic diagram of the structure of a cooling unit of the present invention. Fig. 3 shows a schematic diagram of the structure of a cooling component and a spray component of the present invention. Fig. 4 shows a schematic diagram of the structure of a spiral groove of the present invention.Figure 5 shows a schematic diagram of the structure of a main unit of the present invention. Figure 6 shows an enlarged view of location A according to Figure 1 of the present invention. DETAILED DESCRIPTION The detailed embodiment of the present invention is explained below in conjunction with the drawings of the description, so that the purpose, features and advantages of the present invention are clearer and easier to understand. Although numerous specific details are described here to facilitate a thorough understanding of the invention, the present invention can also be implemented in other ways not described here. Those skilled in the art can make similar extensions without departing from the spirit and scope of the present invention. Therefore, the invention is not limited to the specific embodiments disclosed below. Secondly, the reference herein to “an embodiment” or “exemplarity” refers to a specific feature, structure, or property that may be included in at least one implementation of the present invention. The occurrence of “in an embodiment” at various points in this description does not refer to the same embodiment, nor to an embodiment that is independently or selectively excluded from other embodiments. Furthermore, the present invention is described in detail with reference to schematic diagrams. To facilitate illustration, cross-sectional views depicting device structures in the detailed description of exemplary embodiments of the present invention may be partially enlarged without regard to scale. Moreover, such schematic diagrams are merely exemplary and should not be interpreted as limiting the scope of protection of the present invention. Additionally, the actual manufacturing process involves three-dimensional spatial dimensions, including length, width, and depth. Exemplary embodiment 1: Referring to Fig. 1, Fig. 2 to Fig. 3, a first embodiment of the present invention provides a cooler for improving the vacuuming capability of a vacuum pump, comprising a main unit 100, which includes a vacuum pump 101 and a vacuum collecting line 102 arranged above the vacuum pump 101; a cooling unit 200, which includes a cooling component 201 arranged on the vacuum collecting line, a spray component 202 arranged on the cooling component 201 and a return flow component 203 arranged on the cooling component 201. In conventional practice, the vacuum pump 101 is typically connected directly to the vacuum manifold 102 via connecting pipes; therefore, with increasing ambient temperatures in summer, the steam condensation efficiency in the direct air cooling unit decreases, resulting in a significant portion of the water vapor not being able to condense in the condenser.As a result, the vapor-air mixture in the suction line of the liquid ring vacuum pump 101 contains an excessive amount of water vapor, leading to increased flow resistance (with the water vapor accounting for most of this resistance), reduced flow velocity, and a reduced suction volume of the vacuum pump 101; simultaneously, high-temperature vapor releases heat within the vacuum pump 101, thereby increasing the operating temperature of the vacuum pump 101, intensifying cavitation of the impeller blades, and reducing the pumping capacity of the vacuum pump 101. Thus, by adding a cooling component 201 in conjunction with the spray component 202 and the reflux component 203, the vapor in the vapor-air mixture extracted from the condenser is condensed and discharged, thereby reducing the heat loss through vapor condensation within the liquid ring vacuum pump 101.This lowers the operating water temperature, effectively prevents cavitation in the vacuum pump 101, improves the suction performance of the vacuum pump 101, increases the extracted air volume and thereby improves the vacuum level inside the condenser. Exemplary embodiment 2 With reference to Fig. 1, Fig. 2, Fig. 3 to Fig.4 The difference between a second embodiment and the first embodiment lies in the fact that the cooling component 201 comprises a cooler 201a arranged below the vacuum collecting line 102, a left housing 201b arranged on the cooler 201a, a right housing 201c arranged on the cooler 201a and a tangential inlet pipe 201d arranged on the cooler 201a and connected to the vacuum collecting line 102; wherein the left housing 201b and the right housing 201c are each rigidly connected to the two sides of the cooler 201a via a flange, and wherein the tangential inlet pipe 201d is connected to the top of the outer surface of the cooler 201a, and wherein the tangential inlet pipe 201d is arranged at a position on the right side of the cooler 201a to increase the contact time of the vapor with the spray component 202, thereby improving the cooling and condensation efficiency of the device. Furthermore, the cooling component 201 further comprises a left connecting pipe 201a-1 arranged on the cooler 201a and a right connecting pipe 201a-2 arranged on the cooler 201a; wherein the left connecting pipe 201a-1 and the right connecting pipe 201a-2 are each connected to the left and right sides of the bottom of the outer surface of the cooler 201a, respectively. Furthermore, a connecting air pipe 201b-1 connected to the vacuum pump 101 is arranged on the left housing 201b, wherein an air exhaust valve 201b-2 is arranged on the first air pipe, which is inclined tangentially; wherein one end of the connecting air pipe 201b-1 is connected to the left housing 201b in the cooler 201a, and wherein the lower end of the connecting air pipe 201b-1 is connected to the air inlet 101b of the vacuum pump 101. Furthermore, the spray component 202 comprises a control valve 202a arranged on the left connecting pipe 201a-1, a spray pipe 202b arranged on the left connecting pipe 201a-1 and a spray pump 202c arranged on the spray pipe 202b; wherein the spray pipe 202b is connected to the left connecting pipe 201a-1, and wherein the spray pipe 202b is connected to the spray pump 202c. Furthermore, the spray component 202 comprises a deionization water tube 202d arranged on the spray pump 202c and an atomizing nozzle 202e arranged inside the cooler 201a and connected to the left connecting tube 201a-1; wherein the cooler 201a is configured as a mixing cooler 201a, which uses deionized water as the cooling medium. The deionized water is atomized by the spray pump 202c and expelled as a vapor mist through the atomizing nozzle 202e. The resulting mixture of vapor and deionized water is cooled and condensed, thereby improving the cooling and condensation efficiency of the device. Furthermore, a spiral groove 202f is arranged inside the cooler 201a, which is connected to the tangential inlet pipe 201d. The spiral groove 202f is formed on the inner wall of the cooler 201a, and the point where the tangential inlet pipe 201d connects to the cooler 201a is located precisely within the spiral groove 202f. This ensures that when the vapor enters the interior of the cooler 201a through the vacuum manifold 102 and the tangential inlet pipe, it first moves along the spiral groove 202f, causing the vapor to rise spirally within the cooler 201a. This not only extends the residence time of the vapor within the cooler 201a but also improves the cooling and condensation efficiency. Moreover, the inclined tangential configuration facilitates the vapor's entry into the spiral groove 202f. During operation, the vacuum collection line 102 directs uncooled, non-condensed steam from the condenser of the direct air cooling unit into the cooler 201a. The mixed gas stream from the condenser enters the cooler 201a along the tangent of the vessel, the spray pump 202c is started, and the deionized water is passed through the deionization water pipe 202d, the spray pipe 202b, and the left connecting pipe 201a-1, and finally atomized from the atomizing nozzle 202e and expelled upwards, where the steam mixes with the deionized water, cools, and condenses. The resulting condensate is then collected via the return component 203 and discharged into the condenser, thereby reducing heat loss through steam condensation within the vacuum pump 101.This lowers the operating water temperature, effectively prevents cavitation in the vacuum pump 101, improves the suction performance of the vacuum pump 101, increases the extracted air volume and thereby improves the vacuum level inside the condenser. The remaining structure is identical to that of embodiment 1. Exemplary embodiment 3 With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. 6, the difference of a third exemplary embodiment from the second exemplary embodiment lies in the fact that the return component 203 comprises a manual valve 203a arranged on the right connecting pipe 201a-2 and a return riser pipe 203b arranged on the right connecting pipe 201a-2; wherein the return riser pipe 203b is connected to the right connecting pipe 201a-2. Furthermore, the return component 203 comprises a serpentine condensate collection pipe 203c arranged on the return riser pipe 203b and a drain pipe 203d arranged on the serpentine condensate collection pipe 203c, wherein a condensate drain 203e is arranged on the inner wall of the right connecting pipe 201a-2; wherein two ends of the serpentine condensate collection pipe 203c are each connected to the return riser pipe 203b and the drain pipe 203d, the arrangement of the condensate drain 203e makes it possible for the right connecting pipe 201a-2 to allow only the drainage of condensate without venting. This ensures that the steam can pass completely through the connecting gas pipe 201b-1 into the vacuum pump 101, thereby improving the suction performance of the vacuum pump, increasing the volume of air extracted and thus improving the vacuum level within the condenser. Furthermore, the vacuum pump 101 comprises a base body of the vacuum pump 101 arranged below the connecting air pipe 201b-1, an air inlet 101b arranged on the base body of the vacuum pump 101 and an air outlet 101c arranged on the base body of the vacuum pump 101, wherein the air inlet 101b is in connection with the connecting air pipe 201b-1; During operation, deionized water is sprayed into the cooler 201a, where it mixes with steam, cools, and condenses. The resulting condensate then flows through the right connecting pipe 201a-2, the condensate drain 203e, and the return riser 203b to collect in the serpentine condensate collection pipe 203c. Under the influence of gravity, it flows into the condenser (provided the water level in the condenser remains within normal limits, the evacuated cooler 201a will not flood). Since the cooler 201a is welded to the vacuum manifold 102, it begins operating simultaneously with the start of the vacuum pump 101 and performs evacuation concurrently with the condenser. Under load, the injection of cooled spray water into the cooler 201a improves its operating efficiency. After the system is shut down, the manual valve 203a is simply closed. Because the condensate from the cooler 201a flows into the condenser, normal condenser refilling is effectively achieved during operation. The remaining structure is identical to that of embodiment 2. It should be noted that the structure and arrangement of the present application, which are presented in a number of different exemplary embodiments, are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily apparent to those consulting this disclosure that many modifications are possible without substantially departing from the new teachings and advantages of the subject matter described in this application (e.g., size, scale, construction, shape and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), assembly arrangements, use of materials, color, change of orientation, etc.).For example, elements depicted as a single piece may consist of multiple parts or elements; the position of the elements may be reversed or otherwise altered; and the type, number, or position of the individual elements may be changed or modified. Therefore, all such modifications should be included within the scope of the present invention. The order or sequence of process or method steps may be modified or rearranged according to alternative embodiments. In the claims, each "device plus function" clause should cover structures that perform the functions described herein, including both structural equivalence and equivalent structures.Other substitutions, adaptations, modifications, and omissions can be made to the design, operating conditions, and arrangement of the exemplary embodiments without deviating from the scope of the present invention. The present invention is therefore not limited to a specific embodiment but extends to a wide range of adaptations that still fall within the scope of the appended claims. In order to provide a concise description of the exemplary embodiment, it may not be necessary to describe all features of the actual embodiment (i.e., those features that are not relevant to the best embodiment of the present invention currently under consideration, or those features that are not relevant to the realization of the present invention). It should be noted that the foregoing embodiments serve only to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention is further explained in connection with preferred embodiments, the person skilled in the art should understand that they may modify or equivalently replace the technical solutions of the present invention without departing from the spirit and scope of the technical solution of the present invention, and such modifications or equivalent replacements should be considered to be within the scope of the claims of the present invention.

Claims

Cooler for improving the vacuuming capability of a vacuum pump, characterized in that it comprises: a main unit (100) comprising a vacuum pump (101) and a vacuum collecting line (102) arranged above the vacuum pump (101); a cooling unit (200) comprising a cooling component (201) arranged on the vacuum collecting line, a spray component (202) arranged on the cooling component (201) and a return flow component (203) arranged on the cooling component (201). Cooler for improving the vacuuming capability of a vacuum pump according to claim 1, characterized in that the cooling component (201) comprises a cooler (201a) arranged below the vacuum manifold (102), a left housing (201b) arranged on the cooler (201a), a right housing (201c) arranged on the cooler (201a) and a tangential inlet pipe (201d) arranged on the cooler (201a) and connected to the vacuum manifold (102). Cooler for improving the vacuuming capability of a vacuum pump according to claim 2, characterized in that the cooling component (201) further comprises a left connecting pipe (201a-1) arranged on the cooler (201a) and a right connecting pipe (201a-2) arranged on the cooler (201a). Cooler for improving the vacuuming capability of a vacuum pump according to claim 3, characterized in that a connecting air pipe (201b-1) connected to the vacuum pump (101) is arranged on the left housing (201b), wherein an air vent valve (201b-2) is arranged on the first air pipe, which is inclined tangentially. Cooler for improving the vacuuming capability of a vacuum pump according to claim 4, characterized in that the spray component (202) comprises a control valve (202a) arranged on the left connecting pipe (201a-1), a spray pipe (202b) arranged on the left connecting pipe (201a-1) and a spray pump (202c) arranged on the spray pipe (202b). Cooler for improving the vacuuming capability of a vacuum pump according to claim 5, characterized in that the spray component (202) further comprises a deionization water pipe (202d) arranged on the spray pump (202c) and an atomizing nozzle (202e) arranged inside the cooler (201a) and connected to the left connecting pipe (201a-1). Cooler for improving the vacuuming capability of a vacuum pump according to claim 6, characterized in that a spiral groove (202f) is arranged inside the cooler (201a) which is in contact with the tangential inlet tube (201d). Cooler for improving the vacuuming capability of a vacuum pump according to claim 7, characterized in that the return component (203) comprises a manual valve (203a) arranged on the right connecting pipe (201a-2) and a return riser pipe (203b) arranged on the right connecting pipe (201a-2). Cooler for improving the vacuuming capability of a vacuum pump according to claim 8, characterized in that the return component (203) further comprises a serpentine condensate collecting pipe (203c) arranged on the return riser pipe (203b) and a drain pipe (203d) arranged on the serpentine condensate collecting pipe (203c), wherein a condensate drain (203e) is arranged on the inner wall of the right connecting pipe (201a-2). Cooler for improving the vacuuming capability of a vacuum pump according to claim 9, characterized in that the vacuum pump (101) comprises a base body of the vacuum pump (101) arranged below the connecting air pipe (201b-1), an air inlet (101b) arranged on the base body of the vacuum pump (101) and an air outlet (101c) arranged on the base body of the vacuum pump (101), wherein the air inlet (101b) is in connection with the connecting air pipe (201b-1).

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