Biological scale retarding device, circulating water system and air conditioner

Abstract

The utility model relates to a biological scale retarding device, a circulating water system and an air conditioner, and relates to the technical field of scale retarding and removing equipment. The biological scale retarding device comprises a bacteria chamber, a first cover body and a second cover body, the bacteria chamber is provided with a containing cavity, the containing cavity is used for containing sulfur oxidizing bacteria stock solution, the bacteria chamber is further provided with a bacteria stock solution inlet and a sediment outlet, the first cover body covers the bacteria stock solution inlet, and the second cover body covers the sediment outlet; the bacterium chamber is further provided with a through hole communicating with the containing cavity, and the through hole can allow a liquid solvent to pass through and intercept sulfur oxidizing bacteria in the containing cavity. When the biological scale retarding device is used in a water body environment needing scale retarding, the sulfur oxidizing bacteria added in the bacteria chamber can absorb a large amount of calcium ions in liquid and generate calcium carbonate precipitates in vivo or in vitro, so that the precipitates can be retained in the bacteria chamber, and the formation of scale in the water body environment is retarded.

Description

Technical Field

[0001] The present application relates to the technical field related to scale inhibition and removal equipment, and in particular, to a biological scale inhibition device, a circulating water system, and an air conditioner. Background Art

[0002] A circulating water system is a system that realizes the effective utilization and protection of water resources through the reuse and treatment of water. In a circulating water system, due to the increase in water temperature and the concentration effect, calcium ions (Ca 2+ ), magnesium (Mg 2+ ) ions and anions such as carbonate (CO3 2- ), bicarbonate (HCO3 - ) are prone to precipitation and form insoluble calcium carbonate and magnesium hydroxide, thus leading to the formation of scale. Therefore, when a large amount of water is used in the circulating water system and there is a temperature change, scale is generated in the circulating water system like in a hot water kettle and adheres to the inner wall of the circulating water system.

[0003] Calcium carbonate accounts for the highest proportion in scale, usually about 80%. Currently, the countermeasures for scale still mainly focus on prevention, such as adding a circulating water scale absorber, scale inhibitor, or dispersant, etc., but it can only delay scaling to a certain extent. Once the scale forms on a large scale, it can only be removed physically or chemically, such as by using a high-pressure water gun, acid washing, etc. However, no matter which scale removal method is used, it will cause irreversible damage to the circulating water system. Utility Model Content

[0004] Based on this, it is necessary to provide a biological scale inhibition device, a circulating water system, and an air conditioner for solving the above technical problems.

[0005] A biological scale inhibition device includes a bacteria chamber, a first cover body, and a second cover body. Among them, the bacteria chamber is provided with a cavity for accommodating a sulfur-oxidizing bacteria stock solution. The bacteria chamber is also provided with a bacteria stock solution inlet and a precipitation outlet. The first cover body covers the bacteria stock solution inlet, and the second cover body covers the precipitation outlet. The bacteria chamber is also provided with a through hole communicating with the cavity, and the through hole can allow a liquid medium to pass through and intercept the sulfur-oxidizing bacteria in the cavity.

[0006] It can be understood that the biological scale inhibitor device provided by the present application can be applied to a water environment that requires scale inhibition. The cavity of the bacteria chamber is used to hold a liquid containing sulfur-oxidizing bacteria. Thus, since sulfur-oxidizing bacteria can absorb a large amount of calcium ions in the liquid and generate calcium carbonate precipitation in vivo or in vitro, the precipitation can be retained in the sulfur-oxidizing bacteria chamber. When the precipitation is sufficient, the precipitation is discharged through the precipitation outlet. During the process of sulfur-oxidizing bacteria producing calcium carbonate precipitation, the loss of sulfur-oxidizing bacteria will inevitably occur. At this time, sulfur-oxidizing bacteria are supplemented into the cavity through the bacteria stock solution inlet. In addition, through holes are provided on the bacteria chamber. The through holes do not affect the flow of the liquid, but can prevent sulfur-oxidizing bacteria and the generated calcium carbonate precipitation from flowing out of the cavity of the bacteria chamber. Moreover, when the biological scale inhibitor device is used in a circulating water system, the formation of scale in the system can be slowed down.

[0007] In one embodiment, the bacteria stock solution inlet is located at the top of the bacteria chamber, and the precipitation outlet is located at the bottom of the bacteria chamber.

[0008] In one embodiment, a deposition surface is provided at the bottom of the bacteria chamber. The deposition surface is an inclined surface or a curved surface, and the precipitation outlet is provided at the lowest point of the deposition surface.

[0009] In one embodiment, the deposition surface is an inclined surface, and the slope of the inclined surface is greater than or equal to 5 degrees;

[0010] Or, the deposition surface is a curved surface, and the central angle corresponding to the curved surface is from 0 radian to π radians.

[0011] In one embodiment, the bacteria chamber is at least surrounded by one wall, and the joint where the wall surrounds the bacteria chamber is a curved surface.

[0012] In one embodiment, the through hole is circular, square, triangular or elliptical; the aperture of the through hole is from 5 microns to 20 microns.

[0013] In one embodiment, the material of the bacteria chamber is an acid-resistant metal material, an acid-resistant polymer material, glass or ceramic.

[0014] The present application also claims protection for a circulating water system, including the biological scale inhibitor device according to any one of the above, a circulating water tank, a scale inhibitor automatic dosing device, and a descaling agent automatic dosing device; wherein, the biological scale inhibitor device is located in the circulating water tank, and the scale inhibitor automatic dosing device and the descaling agent automatic dosing device are both arranged in the circulating water tank.

[0015] It can be understood that when the above biological scale inhibitor device is applied to a circulating water system and sulfur-oxidizing bacteria are added to the bacteria chamber of the biological scale inhibitor device, a large amount of Ca can be absorbed by the sulfur-oxidizing bacteria 2+Its characteristics slow down the formation of scale, thus slowing down the formation of scale in the circulating water system. At the same time, the through holes on the bacteria chamber can prevent sulfur-oxidizing bacteria from entering the circulating water system, but do not affect the free flow of water, thus not affecting the normal operation of the circulating water system. In addition, compared with the prior art, adding scale inhibitors to the circulating water system through the scale inhibitor automatic dosing device and adding scale removers to the circulating water system through the scale remover automatic dosing device further slow down the formation of scale in the circulating water system, reduce the need for physical or chemical scale removal in the circulating water system, and thus reduce the damage caused to the circulating water system.

[0016] In one embodiment, the circulating water tank has a side wall and a top wall, and the scale inhibitor in the scale inhibitor automatic dosing device is a solid; the scale inhibitor automatic dosing device is located on the top wall of the circulating water tank.

[0017] And / or, a dispersion unit is provided at the medicine outlet of the scale inhibitor automatic dosing device.

[0018] And / or, an anti-caking agent is provided in the scale inhibitor automatic dosing device.

[0019] In one embodiment, the circulating water tank has a side wall and a top wall, and the scale remover in the scale remover automatic dosing device is a solid; the scale remover automatic dosing device is located on the top wall of the circulating water tank.

[0020] And / or, a dispersion unit is provided at the medicine outlet of the scale remover automatic dosing device.

[0021] And / or, an anti-caking agent is provided in the scale remover automatic dosing device.

[0022] In one embodiment, the circulating water tank is provided with a circulating water supply port, and a temperature sensor is provided at the circulating water supply port; the circulating water system further includes a controller, and the controller is respectively in signal connection with the temperature sensor, the scale inhibitor automatic dosing device, and the scale remover automatic dosing device; a preset temperature is configured in the controller, and the controller is configured to obtain the real-time temperature of the temperature sensor, and the controller can control the opening and closing of the scale inhibitor automatic dosing device and the scale remover automatic dosing device according to the preset temperature and the real-time temperature.

[0023] This application also claims protection for an air conditioner including the circulating water system as described above. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0025] Figure 1 A three-dimensional view of the sulfur-oxidizing bacteria chamber provided by the present application;

[0026] Figure 2 A schematic diagram of the arc surface of the cross-section of the sulfur-oxidizing bacteria chamber provided by the present application;

[0027] Figure 3 A schematic diagram of the through-hole arrangement of the sulfur-oxidizing bacteria chamber provided by the present application;

[0028] Figure 4 A schematic diagram of the circulating water system provided by an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the circulating water system provided by another embodiment of the present application;

[0030] Figure 6 A structural diagram of an air conditioner provided by an embodiment of the present application.

[0031] Reference numerals: 1, air conditioner; 10, circulating water system; 20, condenser; 30, compressor; 40, evaporator; 50, throttling device; 100, biological scale inhibitor device; 200, circulating water tank; 300, scale inhibitor automatic dosing device; 400, descaling agent automatic dosing device; 500, make-up water pump; 600, anti-pollution isolation valve; 700, valve; 800, shock absorber; 900, pipeline; 110, bacteria chamber; 1101, cavity; 1102, bacteria stock solution inlet; 1103, precipitation outlet; 1104, through-hole; 11041, first through-hole; 11042, second through-hole; 11043, third through-hole; 1105, deposition surface; 120, first cover; 130, second cover. Detailed Embodiments

[0032] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0033] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of this application are only for illustrative purposes and do not represent the only implementation.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, the first feature may be in direct contact with the second feature "on" or "under" the second feature, or the first feature and the second feature may be in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0036] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0037] Once scale forms in the target container, it can only be removed physically or chemically, such as with a high-pressure water gun, pickling, etc., but no matter which descaling method is used, it will cause irreversible damage to the target container.

[0038] Currently, there are many types of sulfur-oxidizing bacteria (SOB) widely used in industrial desulfurization technology. Some SOB will generate calcium carbonate in vivo and in vitro or store Ca during the sulfur oxidation process. 2+, maintaining the stable pH value within the bacteria. Among them, colorless sulfur bacteria belong to a type of SOB, with strong survival adaptability and a wide range of suitable living environments. Colorless sulfur bacteria can be found under the conditions of pH value from 0.5 to 10.0 and temperature from 4°C to 95°C. Colorless sulfur bacteria have very low requirements for dissolved oxygen (DO) and can maintain life activities under anaerobic to highly saturated states.

[0039] Therefore, please refer to Figure 1 and Figure 2 , the present application provides a biological scale inhibitor device 100 using sulfur-oxidizing bacteria for scale inhibition, including a bacteria chamber 110, a first cover 120, and a second cover 130. Among them, the bacteria chamber is provided with a cavity 1101 for accommodating the sulfur-oxidizing bacteria stock solution. The bacteria chamber 110 is also provided with a bacteria stock solution inlet 1102 and a precipitation outlet 1103. The first cover 120 covers the bacteria stock solution inlet 1102, and the second cover 130 covers the precipitation outlet 1103. The bacteria chamber is also provided with a through hole 1104 communicating with the cavity. The through hole 1104 can allow the liquid medium to pass through and intercept the sulfur-oxidizing bacteria in the liquid within the cavity. It can be understood that the liquid medium includes the water in the application environment and the liquid of the bacteria stock solution.

[0040] The biological scale inhibitor device 100 provided by the present application can be applied to the water environment that needs scale inhibition. By setting the bacteria chamber 110, which is provided with a cavity 1101, a bacteria stock solution inlet 1102, and a precipitation outlet 1103, the sulfur-oxidizing bacteria stock solution can be put into the cavity 1101 from the bacteria stock solution inlet 1102. By closing the bacteria stock solution inlet 1102 with the first cover 120 and closing the precipitation outlet 1103 with the second cover 130, it can be avoided that the sulfur-oxidizing bacteria overflow from the bacteria stock solution inlet 1102 and the precipitation outlet 1103. Since the sulfur-oxidizing bacteria can absorb a large amount of calcium ions in the water body and generate calcium carbonate precipitation in vivo or in vitro, the precipitation can be retained in the bacteria chamber 110. When the precipitation is sufficient, the second cover 130 is opened, and the precipitation is discharged through the precipitation outlet 1103. During the process of the sulfur-oxidizing bacteria producing calcium carbonate precipitation, the loss of sulfur-oxidizing bacteria will inevitably occur. At this time, the sulfur-oxidizing bacteria stock solution can be supplemented into the bacteria chamber 110 through the bacteria stock solution inlet 1102. In addition, by setting the through hole 1104, it can ensure that the water body freely enters and exits the cavity of the bacteria chamber 110, and can prevent the sulfur-oxidizing bacteria and the generated calcium carbonate precipitation from flowing out of the cavity 1101 of the bacteria chamber 110, thus both slowing down the formation of water scale and being able to centrally treat the calcium carbonate precipitation generated by the sulfur-oxidizing bacteria.

[0041] For better illustration, taking the vertical direction along the height direction of the bacteria chamber 110 as an example, the direction in which the sulfur-oxidizing bacteria themselves or the generated precipitate sinks under the action of gravity is the bottom of the bacteria chamber 110, and the opposite direction is the top of the bacteria chamber 110. Any direction perpendicular to the height direction can be used as the length direction. Schematically, the cavity 1101 provided in the bacteria chamber 110 is the internal space of the bacteria chamber 110, and the bottom of the bacteria chamber 110 can also be understood as the bottom of the cavity 1101. The free entry and exit of water into and out of the cavity of the bacteria chamber 110 can be understood as: water enters the cavity 1101 of the bacteria chamber 110 through the through hole 1104, or flows out from the cavity 1101 of the bacteria chamber 110 to the outside.

[0042] In one embodiment, the first cover 120 and the bacteria chamber 110 are of an integral structure. There is a connecting portion between the first cover 120 and the bacteria chamber 110, and the first cover 120 is opened or closed in a flipping form. In other embodiments, the first cover 120 and the bacteria chamber 110 can also be a split independent structure. The first cover 120 is connected to the bacteria chamber 110 through a rotating shaft, and the first cover 120 is opened or closed in a rotating manner. Further, there is a limiting portion at the position of the bacteria chamber 110 corresponding to the first cover 120 for stabilizing the closed state of the first cover 120. In other embodiments, the first cover 120 is detachably connected to the bacteria chamber 110. For example, the first cover 120 can be connected to the bacteria chamber 110 through a clamping structure or a fastener, and the bacteria stock solution inlet 1102 can be opened by removing the first cover 120. Further, when the first cover 120 covers the bacteria stock solution inlet, there can be a gap between the first cover 120 and the bacteria chamber 110, and this gap can prevent the sulfur-oxidizing bacteria and the generated calcium carbonate precipitate from flowing out of the cavity 1101 of the bacteria chamber 110. The setting of the second cover 130 is the same as that of the first cover 120 and will not be repeated here.

[0043] In one embodiment, the bacteria stock solution inlet 1102 is located at the top of the bacteria chamber and is used to add sulfur-oxidizing bacteria into the cavity 1101 or supplement the lost sulfur-oxidizing bacteria. At the same time, the precipitation outlet 1103 is provided at the bottom of the bacteria chamber 110 and is used to discharge the sulfur-oxidizing bacteria or the precipitate generated by the sulfur-oxidizing bacteria from the cavity 1101.

[0044] Further, a deposition surface 1105 is provided at the bottom of the body of the bacteria chamber 110. The deposition surface 1105 is an arc surface or an inclined surface. The precipitation outlet 1103 is provided at the lowest point of the deposition surface 1105. In this way, it is beneficial for the calcium carbonate precipitate generated by the sulfur-oxidizing bacteria or the sulfur-oxidizing bacteria containing calcium carbonate precipitate in vivo to gather on the deposition surface 1105 at the bottom of the bacteria chamber 110, and at the same time, it is convenient to discharge the calcium carbonate precipitate or the bacteria filled with calcium carbonate through the precipitation outlet 1103. When the solution in which the sulfur-oxidizing bacteria are located is an aqueous solution, the sulfur-oxidizing bacteria can generate calcium carbonate precipitate in vivo or in vitro. When the sulfur-oxidizing bacteria generate calcium carbonate precipitate in vitro, the density of the generated calcium carbonate precipitate is much greater than that of water, and the gravity of the calcium carbonate precipitate in water is much greater than the buoyancy. Therefore, the calcium carbonate precipitate will sink to the deposition surface 1105 at the bottom of the bacteria chamber 110; when the sulfur-oxidizing bacteria generate calcium carbonate precipitate in vivo, after the sulfur-oxidizing bacteria absorb enough Ca 2+ After that, the density of the sulfur-oxidizing bacteria increases due to the increase of calcium carbonate precipitate in vivo, and thus it will also sink to the deposition surface 1105 at the bottom of the bacteria chamber 110. When there are enough precipitates, the precipitates are discharged through the precipitation outlet 1103.

[0045] In one embodiment, the deposition surface 1105 is an inclined surface, and the slope of the inclined surface is greater than or equal to 5 degrees. In this way, the precipitates deposited on the deposition surface 1105 are easy to move down along the inclined surface to the precipitation outlet 1103. Specifically, the slope of the inclined surface can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees.

[0046] In another embodiment, the deposition surface 1105 is an arc surface. Refer to Figure 2 , Figure 2 Shown is a schematic cross-sectional view of the bacteria chamber 110. Further, the central angle corresponding to the arc surface is from 0 radian to π radians. In this way, the precipitates deposited on the deposition surface 1105 are easy to move down along the arc surface to the precipitation outlet 1103. According to the conversion formula between the radian α and the angle n, |α| = n·π÷180°, it can be known that the central angle corresponding to the arc surface is from 0° to 180°. Specifically, the central angle corresponding to the arc surface can be 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, 160 degrees, 170 degrees. Schematically, the other surfaces of the bacteria chamber 110 except the deposition surface 1105 are rectangular or square. Assuming that the deposition surface 1105 makes an arc surface with the left and right surfaces of the bacteria chamber 110, the side length of the left and right surfaces is a, and the corresponding range of the arc radius of the arc surface is from 0.5a to 2a.

[0047] Further, the bacteria chamber 110 is at least surrounded by one wall, and the joints where the walls surround the bacteria chamber 110 are arc-shaped. In this way, when the bacteria chamber 110 is placed in a water environment, the bacteria chamber 110 will not flip with the water fluctuations, so as to ensure that all the precipitates can coagulate on the deposition surface 1105. Schematically, when the bacteria chamber 110 is surrounded by one wall, the bacteria chamber 110 can be set to a structure similar to a water droplet shape, with both the bottom and the top being rounded arc surfaces. Schematically, when the bacteria chamber 110 is generally rectangular or square, the bacteria chamber 110 is composed of 6 walls, where the bottom deposition surface 1105 is an inclined surface or an arc, and the joints and vertices of each wall are rounded arc surfaces, but the shape of the walls is not set. The walls can be arc-shaped or flat. In this way, it can also prevent the bacteria chamber 110 from flipping in the water.

[0048] In an application example, a laser punching technique is used to make through holes 1104 in the bacteria chamber 110 that communicate with the cavity 1101. The through holes 1104 are used to block the sulfur-oxidizing bacteria and calcium carbonate precipitates from leaking out of the cavity, and also to allow water to flow freely between the cavity 1101 and the external environment.

[0049] In one embodiment, referring to Figure 3 , the through hole 1104 is a circle with a diameter d, because the round hole is the simplest and most practical. As Figure 3 shown, the through holes 1104 are distributed in rows, and there are at least two rows of through holes 1104. Any row of through holes 1104 is staggered with the adjacent row of through holes 1104; two adjacent through holes 1104 in any row are respectively the first through hole 11041 and the second through hole 11042, and one through hole 1104 in the adjacent row is the third through hole 11043. The first through hole 11041, the second through hole 11042, and the third through hole 11043 are adjacent to each other in pairs, and the centers of the first through hole 11041, the second through hole 11042, and the third through hole 11043 are connected to form an equilateral triangle. In other embodiments, the through holes 1104 can also be arranged freely or in a checkerboard pattern.

[0050] Since the sizes of the sulfur-oxidizing bacteria used are generally in the micron level, the through holes 1104 of the bacteria chamber 110 are also micron-level holes. The diameter of the through holes 1104 is generally 1 - 20 μm. The maximum pore diameters corresponding to different bacteria are also different. The pore diameter of the through holes 1104 is enlarged or reduced according to the size of the sulfur-oxidizing bacteria actually used, but the through holes 1104 should be less than or equal to the size of the bacteria species used. For example, assume that the sulfur-oxidizing bacteria used in this application example are Achromatium, and the length of its cells can reach 10 μm - 2 cm. Therefore, the diameter of the through holes 1104 is less than or equal to the minimum size of the bacteria species used, that is, the diameter of the through holes 1104 is less than 10 μm.

[0051] Further, the distance between any two adjacent through-holes 1104 is greater than or equal to the thickness of the material of the bacteria chamber 110. In this way, it is possible to avoid cracks on the wall of the bacteria chamber 110 during the processing of the through-holes due to too small a distance between the through-holes 1104. It can be understood that the "distance" here is the shortest distance between the edges of two adjacent through-holes 1104, and the diameter of the through-holes 1104 is not calculated.

[0052] In other embodiments, the through-hole 1104 can also be any one of a square, a triangle, an ellipse, or any other arbitrary shape. The shapes of the multiple through-holes 1104 can be the same or different, as long as the through-holes 1104 can intercept sulfur-oxidizing bacteria within the cavity 1101 on a large scale.

[0053] In one embodiment, the material of the bacteria chamber 110 is an acid-resistant metal material, an acid-resistant polymer material, glass, or ceramic.

[0054] In a specific application example, the sulfur-oxidizing bacteria can be selected as giant sulfur-oxidizing bacteria. Further, Achromatium can be selected. Strains such as Thiomargarita magnifica or Thiomargarita namibiensis, which have the ability to generate calcium carbonate in vivo or in vitro, can also be used. Further, the giant sulfur-oxidizing bacteria applied in the bacteria chamber 110 are not limited to one type.

[0055] As Figure 4 shown, the present application also provides a circulating water system 10, including the above-mentioned biological scale inhibitor device 100, a circulating water tank 200, a scale inhibitor automatic dosing device 300, and a descaling agent automatic dosing device 400; wherein, the biological scale inhibitor device 100 is located in the circulating water tank 200, and the scale inhibitor automatic dosing device 300 and the descaling agent automatic dosing device 400 are both arranged in the circulating water tank 200. Further, the circulating water tank 200 has a top wall and side walls.

[0056] Further, one to n biological scale inhibitor devices 100 can be provided in the circulating water tank 200. They can be immersed in the circulating water or float on the surface of the circulating water. The upper part of the biological scale inhibitor device 100 is provided with a bacterial stock solution inlet, through which the sulfur-oxidizing bacteria can be supplemented when they are insufficient. When there are n biological scale inhibitor devices 100, these biological scale inhibitor devices 100 can be arranged arbitrarily.

[0057] During the operation of the circulating water system, the scale inhibitor automatic dosing device 300 periodically adds scale inhibitor to the circulating water tank 200. When the water scale reaches a certain level, the descaling agent automatic dosing device 400 is activated to add descaling agent to the circulating water tank 200. Further, the descaling agent automatic dosing device 400 and the scale inhibitor automatic dosing device 300 can add scale inhibitor and descaling agent to the circulating water tank 200 at fixed time intervals, or automatically according to the scaling situation. Further, the descaling agent and the scale inhibitor can be selected as solids or liquids.

[0058] In one embodiment, the scale inhibitor in the scale inhibitor automatic dosing device 300 is a solid, so it is convenient for long-term storage of the medicine. However, the solid medicine may have the problem of caking. To solve the problem of solid caking, the following settings are made in this embodiment: The scale inhibitor automatic dosing device 300 is located at a relatively high position in the circulating water tank 200, such as the top wall or side wall of the circulating water tank 200, and relies on gravity impact to break up the caked scale inhibitor; and / or, a vibration and dispersion unit is provided at the medicine outlet of the scale inhibitor automatic dosing device 300; and / or, a small amount of anti-caking agent is added to the scale inhibitor automatic dosing device 300.

[0059] In one embodiment, similarly for the convenience of long-term storage of the medicine, the descaling agent in the descaling agent automatic dosing device 400 is a solid. However, the solid medicine may have the problem of caking. To solve the problem of solid caking, the following settings are made in this embodiment: The descaling agent automatic dosing device 400 is located at a relatively high position in the circulating water tank 200, such as the top wall or side wall of the circulating water tank 200, and relies on gravity impact to break up the caked descaling agent; and / or, a vibration and dispersion unit is provided at the medicine outlet of the descaling agent automatic dosing device 400; and / or, a small amount of anti-caking agent is added to the descaling agent automatic dosing device 400.

[0060] In one embodiment, the main component of the scale inhibitor in the scale inhibitor automatic dosing device 300 is an organic salt or inorganic salt that can complex with one or more of Ca 2+ , Cu 2+ , Mg 2+ , or forms a soluble complex with insoluble metal ions, and the pH value of its aqueous solution should be close to neutral, is easily degradable and pollution-free, and can itself be used as a food preservative, so no anti-corrosion measures are required. The scale inhibitor in the scale inhibitor automatic dosing device 300 is preferably one or more of tartrate, citrate, and thiosulfate. For example, tartrate can complex with Ca 2+ and Cu 2+ , citrate can complex with Ca 2+ , Mg 2+ , Fe 2+ , thiosulfate combines with Ca 2+ and is easily soluble in water. Since copper citrate is of low toxicity, citrate cannot be used as a scale inhibitor for copper scale.

[0061] In actual operation, scale inhibition is a long-term slow chemical reaction, and the chemical reaction rate can be slowed down as much as possible. Therefore, the dosage of the scale inhibitor is preferably considered based on the safety value, and a very low mass concentration is used. Sodium thiosulfate, potassium sodium tartrate, sodium citrate, etc. are preferably used. In terms of concentration, since they all need to be dissolved in the circulating water eventually, the given concentration value is the total concentration after the chemical agent is dissolved in the circulating water, and the scale inhibitor concentration is 1 ppm to 8 ppm.

[0062] In one embodiment, the main components of the descaling agent in the descaling agent automatic dosing device 400 are one or more weak acids such as thiosulfuric acid, ethylenediaminetetraacetic acid / EDTA, citric acid, tartaric acid, malic acid, etc. The descaling agent does not react directly with metals (especially copper) and stainless steel, and can only react with metal oxides, basic carbonate metals, and water scales on the surface of the circulating water system. Preferably, the concentration of the descaling agent is 0.05 to 4 mol / L, and the pH of the solution after the descaling agent is dissolved in the circulating water should be between 2 and 4, and the optimal pH value is 2.5.

[0063] In a specific application example, the sulfur-oxidizing bacteria in the oxidation bacteria chamber are one of Achromatium, Thiomargarita magnifica, or Thiomargarita namibiensis.

[0064] Refer to Figure 4 and Figure 5 , the circulating water system 10 in this embodiment further includes a make-up water pump 500, an anti-pollution isolation valve 600, a valve 700, and a shock absorber throat 800 that are sequentially connected to the circulating water tank 200 through a pipeline 900. It can be understood that as long as the make-up water pump 500 provides power, the circulating water can circulate in the pipeline 900. Further, the circulating water system 10 can use the circulating water tank 200 to store the circulating water, or use the make-up water pump 500 as a branch to supplement the lost circulating water to the circulating water system 10.

[0065] The Achromatium used in this embodiment belongs to single-celled colorless sulfur-oxidizing bacteria and is a known heterozygous polyploid bacterium. A single cell contains about 300 different chromosomes, and its genetic diversity far exceeds the level of general bacterial species. This kind of bacteria is widely distributed in fresh water and salt water sediments. The most remarkable feature of Achromatium is that a large amount of calcium carbonate crystals will be deposited in its body to regulate the stability of its own pH value, and the calcium carbonate content is more than 90%. Its diameter can reach 0.5 mm, and the cell length can reach 200 μm, generally more than 10 μm. Therefore, the pore diameter of the through hole 1104 of the bacteria chamber 110 in this embodiment is more than 10 μm.

[0066] When the circulating water system operates for a long time, Ca in the circulating water tank 200 2+As the concentration increases, the sulfur-oxidizing bacteria Achromatium in the bacterial chamber 110 captures Ca in the circulating water. 2+ , and generate calcium carbonate in the Achromatium, making Ca 2+ The concentration continues to decrease until the calcium carbonate content in the Achromatium exceeds 90%, and then it will precipitate on the sedimentation surface 1105 at the bottom of the bacteria chamber 110. The precipitation outlet 1103 is opened manually or automatically periodically to discharge the Achromatium full of calcium carbonate, and an equal amount of Achromatium is replenished from the bacterial stock solution inlet 1102. The discharged Achromatium full of calcium carbonate can be placed in an acidic solution with a pH value of 2 to 6. After the calcium carbonate in the body is consumed, it can be re-added to the bacteria chamber 110 for recycling.

[0067] The giant sulfur-oxidizing bacteria used in this embodiment have strong adaptability. There is no need to protect the giant sulfur-oxidizing bacteria when adding a descaling agent. If the descaling agent contains sodium thiosulfate or the descaling agent contains thiosulfuric acid, there is no need to provide sulfur-containing substances specifically for the giant sulfur-oxidizing bacteria. If the descaling agent does not contain sodium thiosulfate and the descaling agent does not contain thiosulfuric acid, it is necessary to regularly add sulfur compounds with a valence lower than +6, such as sulfur, to the bacteria chamber 110, and try not to use H2S.

[0068] If H2S is periodically added to the giant bacteria chamber 110 to cultivate bacteria, the chemical reaction formula is:

[0069]

[0070] If S solid culture bacteria are added to the giant bacteria chamber 110 periodically, the chemical reaction formula is:

[0071]

[0072] If it is considered that S element will affect the quality and pH value of circulating water, the bacteria chamber 110 can absorb enough S element in the outside world. This is because some sulfide bacteria such as Achromatium will store S element in their bodies. At this time, the bacteria chamber 110 is put back into the circulating water system.

[0073] If the descaling agent contains thiosulfuric acid or the descaling agent contains sodium thiosulfate, the chemical reaction formula is:

[0074]

[0075] Since the scale inhibitor automatic dosing device 300 periodically adds a small amount of scale inhibitor to the circulating water during normal operation, and the scale inhibitor mostly contains strong acid and weak base salts, and the aqueous solution is weakly alkaline, even if a small amount of sulfuric acid is generated by the giant sulfur-oxidizing bacteria and discharged outside the bacteria, it will not affect the pH value of the circulating water and corrode the metal. And Achromatium contains a large amount of calcium carbonate to regulate the stability of its own pH value.

[0076]

[0077] When the scale reaches a certain thickness, the scale inhibitor automatic dosing device 300 is closed, and the descaling agent automatic dosing device 400 is turned on. The main components of the descaling agent are weak acids such as thiosulfuric acid, EDTA, citric acid, tartaric acid, and malic acid, which will not react directly with metals, but only react with metal oxides and scale. After the descaling is completed and the system restarts, the scale inhibitor automatic dosing device 300 still starts periodically.

[0078] In one embodiment, the circulation water tank 200 is provided with a circulating water supply port, and a temperature sensor is provided at the circulating water supply port. The circulating water system further includes a controller, which is respectively signal-connected to the temperature sensor, the scale inhibitor automatic dosing device 300, and the descaling agent automatic dosing device 400; a preset temperature X is configured in the controller, and it is configured to obtain the real-time temperature T of the temperature sensor. The controller can control the opening and closing of the scale inhibitor automatic dosing device 300 and the descaling agent automatic dosing device 400 according to the preset temperature X and the real-time temperature T.

[0079] In the actual operation of this embodiment, the circulating water system performs scale removal judgment by itself during operation, and the scale removal judgment is based on the real-time temperature T of the water supply in the circulating water system and the preset temperature X. In the refrigeration condition, when the real-time temperature T < the preset temperature X, it is judged as no (scale removal is not required), and no scale removal operation is performed. At this time, the controller controls the scale inhibitor automatic dosing device 300 to open for periodic dosing, and controls the descaling agent automatic dosing device 400 to close; when the real-time temperature T > the preset temperature X, but does not last for t time, it is judged as no (scale removal is not required), and no scale removal operation is performed. At this time, the controller controls the scale inhibitor automatic dosing device 300 to open for periodic dosing, and controls the descaling agent automatic dosing device 400 to close; when the real-time temperature T > the preset temperature X and lasts for t time, it is judged as yes (scale removal is required), and scale removal operation is performed. At this time, the controller controls the descaling agent automatic dosing device 400 to open and controls the scale inhibitor automatic dosing device 300 to close. After the operation is completed, it is judged whether the scale removal is completed according to the scale removal situation. If the judgment is no, the previous scale removal operation is repeated until the scale removal is completed and the judgment is yes.

[0080] In the heating mode, when the real-time temperature T > the preset temperature X, it is judged as no, and no descaling operation is required; when the real-time temperature T < the preset temperature X, but it does not last for t hours, it is also judged as no, and no descaling operation is required; when the real-time temperature T < the preset temperature X and lasts for t hours, it is judged as yes, and a descaling operation is performed. Whether it is judged as no or yes, the controller controls the opening and closing states of the scale inhibitor automatic dosing device 300 and the descaling agent automatic dosing device 400 as described above, and will not be repeated here.

[0081] As Figure 6 shown, the present application also provides an air conditioner 1, including the circulating water system 10 described in any one of the above embodiments. The air conditioner 1 further includes a condenser 20, a compressor 30, an evaporator 40, and a throttling device 50. The condenser 20, the compressor 30, the evaporator 40, and the throttling device 50 are sequentially connected through pipelines. The circulating water system 10 can be arranged near both the condenser 20 and the evaporator 40, and the circulating water system 10 is used for heat exchange with the condenser 20 and the evaporator 40. The circulating water system 10 is divided into an evaporative system and a non-evaporative system. For the evaporative system, the circulating water system 10 sprays the circulating water onto the surface of the condenser 20 for evaporative heat dissipation, and the circulating water that has not evaporated will return to the circulating water tank 200 of the circulating water system 10 and is sent to the surface of the condenser 20 by the make-up water pump 500 again. For the non-evaporative system, the sensible heat of the circulating water is relied on to take away or provide heat. The way the circulating water system 10 acts on the evaporator 40 is the same as the way it acts on the condenser 20, and will not be repeated here.

[0082] It can be understood that when the air conditioner 1 is cooling or heating, the temperature of the water in the circulating water system 10 will change. Since the circulating water is rich in calcium ions (Ca 2+ ), magnesium (Mg 2+ ) ions and anions such as carbonate (CO3 2- ) and bicarbonate (HCO3 - ) are prone to precipitate and form insoluble calcium carbonate and magnesium hydroxide, which will cause scale to adhere to the inner wall of the circulating water system 10, ultimately affecting the energy consumption and lifespan of the air conditioner 1. The air conditioner 1 provided by the present application, by adding a biological scale inhibitor device 100 to the circulating water system 10 inside the air conditioner 1, can first inhibit the formation of scale through the sulfur-oxidizing bacteria in the biological scale inhibitor device 100. Secondly, the scale inhibitor automatic dosing device 300 is used to regularly apply scale inhibitor to the circulating water tank 200 of the circulating water system 10, which further inhibits the formation of scale. When there is more scale, the descaling agent automatic dosing device 400 is used to regularly apply descaling agent to the circulating water tank 200 of the circulating water system 10 to remove the scale. By combining the above-mentioned various methods for scale inhibition and descaling, irreversible damage to the circulating water system caused by high-pressure water guns and acid pickling descaling is avoided, which is equivalent to extending the lifespan of the air conditioner 1, thereby saving production costs.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0084] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A biological scale inhibitor device, characterized in that, It includes a bacteria chamber (110), a first cover body (120) and a second cover body (130). Among them, the bacteria chamber (110) is provided with a cavity (1101) for accommodating a stock solution of sulfur-oxidizing bacteria. The bacteria chamber (110) is further provided with a bacteria stock solution inlet (1102) and a sediment outlet (1103). The first cover body (120) covers the bacteria stock solution inlet (1102), and the second cover body (130) covers the sediment outlet (1103). The bacteria chamber (110) is further provided with a through hole (1104) communicating with the cavity (1101). The through hole (1104) can allow a liquid medium to pass through and intercept the sulfur-oxidizing bacteria in the cavity (1101).

2. The bio-scale inhibitor device according to claim 1, wherein, The bacteria stock solution inlet (1102) is located at the top of the bacteria chamber (110), and the sediment outlet (1103) is located at the bottom of the bacteria chamber (110).

3. The bio-scale inhibitor device according to claim 2, wherein The bottom of the bacteria chamber (110) is provided with a deposition surface (1105). The deposition surface (1105) is an inclined surface or a curved surface, and the sediment outlet (1103) is arranged at the lowest position of the deposition surface (1105).

4. The bio-scale inhibitor device according to claim 3, characterized in that, The deposition surface (1105) is an inclined surface, and the slope of the inclined surface is greater than or equal to 5 degrees; or, the deposition surface (1105) is a curved surface, and the central angle corresponding to the curved surface is from 0 radian to π radians.

5. The bio-scale inhibitor device according to any one of claims 1 to 4, characterized in that The bacteria chamber (110) is surrounded by at least one wall, and the joint of the walls surrounding the bacteria chamber (110) is a curved surface.

6. The biological scale inhibitor device according to any one of claims 1 to 4, characterized in that, The through hole (1104) is circular, square, triangular or elliptical; the aperture of the through hole (1104) is from 1 micron to 20 microns.

7. The bio-scale inhibitor device according to any one of claims 1 to 4, characterized in that, The material of the bacteria chamber (110) is an acid-resistant metal material, an acid-resistant polymer material, glass or ceramic.

8. A circulating water system, characterized in that, It includes a biological scale inhibitor device (100), a circulation water tank (200), a scale inhibitor automatic dosing device (300), and a descaling agent automatic dosing device (400) as described in any one of claims 1 to 7. Among them, the biological scale inhibitor device (100) is located in the circulation water tank (200), and the scale inhibitor automatic dosing device (300) and the descaling agent automatic dosing device (400) are both arranged in the circulation water tank (200).

9. The circulating water system according to claim 8, characterized in that, The circulation water tank (200) has a side wall and a top wall. The scale inhibitor in the scale inhibitor automatic dosing device (300) is a solid; the scale inhibitor automatic dosing device (300) is located on the top wall or the side wall of the circulation water tank (200); and / or, a vibration-dispersing unit is arranged at the medicine outlet of the scale inhibitor automatic dosing device (300); and / or, an anti-caking agent is provided in the scale inhibitor automatic dosing device (300).

10. The circulating water system according to claim 8, wherein The circulation water tank (200) has a side wall and a top wall. The descaling agent in the descaling agent automatic dosing device (400) is a solid; the descaling agent automatic dosing device (400) is located on the top wall or the side wall of the circulation water tank (200); and / or, a vibration-dispersing unit is arranged at the medicine outlet of the descaling agent automatic dosing device (400); and / or, an anti-caking agent is provided in the descaling agent automatic dosing device (400).

11. The circulating water system according to any one of claims 8 to 10, characterized in that, The circulating water tank (200) is provided with a circulating water supply port, and a temperature sensor is arranged at the circulating water supply port; The circulating water system further includes a controller, and the controller is respectively in signal connection with the temperature sensor, the scale inhibitor automatic dosing device (300), and the descaling agent automatic dosing device (400); A preset temperature is configured in the controller, and the controller is configured to be able to obtain the real-time temperature of the temperature sensor. The controller can control the opening and closing of the scale inhibitor automatic dosing device (300) and the descaling agent automatic dosing device (400) according to the preset temperature and the real-time temperature.

12. An air conditioner, characterized in that, It includes the circulating water system (10) according to any one of claims 8 to 11.

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