An evaporative condenser unit

Abstract

An embodiment of the present invention provides an evaporative condenser unit to avoid corrosion of a portion of the condenser in the evaporative condenser unit that is away from an anode replacement device. The evaporative condenser unit in the embodiment of the present invention comprises a condenser, a spray device for spraying liquid onto the condenser, and a spray liquid collection tank located on the lower side of the condenser. The unit is characterized in that it further comprises an anode replacement device that contacts the spray liquid sprayed by the spray device and / or the spray liquid to be sprayed, and a temperature control device that controls the temperature of the anode replacement device, wherein the reducing property of the material of the anode replacement device is higher than the reducing property of the material of the portion of the condenser that contacts the liquid, and the temperature control device controls the temperature of the anode replacement device.

Description

Technical Field

[0001] The present invention relates to the field of condensation technology, and more particularly to an evaporative condenser unit. Background Art

[0002] At present, a certain amount of cathode ions, such as Cl- and (OH)-, are released in the spray liquid. These cathode ions are prone to electrochemical reactions with the condenser material, thus corroding the condenser. The better the heat exchange effect and the larger (thinner) the heat exchange surface area per unit mass, the faster and more severe the corrosion.

[0003] Currently, the industry mainly adopts methods such as increasing the oxidation resistance of the spraying material itself to solve this problem. However, due to process and transportation reasons, it is inevitable that the surface treatment of the edge parts will be insufficient, which will accelerate corrosion from this location.

[0004] How to effectively solve the corrosion problem of the condenser is an urgent problem that those skilled in the art need to solve. Summary of the Invention

[0005] An embodiment of the present invention provides an evaporative condenser unit, which heats the anode replacement device through a temperature control device, thereby accelerating the reaction between the anode replacement device and cathode ions in the spray liquid, thereby avoiding corrosion of the part of the condenser away from the anode replacement device.

[0006] A first aspect of an embodiment of the present application provides an evaporative condenser unit, comprising a condenser, a spray device for spraying liquid into the condenser, and a spray liquid collection tank located on the lower side of the condenser, and also comprising an anode replacement device in contact with the spray liquid sprayed by the spray device and / or the spray liquid to be sprayed, and a temperature control device for controlling the temperature of the anode replacement device, wherein the reducing property of the material of the anode replacement device is higher than the reducing property of the part of the condenser in contact with the liquid, and the temperature control device controls the temperature of the anode replacement device.

[0007] Preferably, the evaporative condenser unit further includes an ion concentration detection device for detecting the cathode ion concentration in the spray liquid.

[0008] Preferably, the ion concentration detection device is an electrode detection device, which is used to monitor the concentration of cathode ions in the spray liquid through the electrode potential of the electrode detection device.

[0009] Preferably, the electrode detection device is arranged in the spray liquid collecting tank and is away from the position of the anode replacement device.

[0010] Preferably, the temperature control device includes: a heating resistor and a piezoelectric device electrically connected to the heating resistor.

[0011] Preferably, the piezoelectric device is arranged at a position away from the spraying device, so that the spray liquid sprayed by the spraying device hits the piezoelectric device with a preset kinetic energy during the falling process, so that the piezoelectric device outputs a voltage.

[0012] Preferably, the temperature control device further comprises: an energy storage element for storing the electrical energy output by the piezoelectric device.

[0013] A second aspect of an embodiment of the present application provides an evaporative condenser unit, comprising a condenser, a spray device for spraying liquid into the condenser, and a spray liquid collection tank located on the lower side of the condenser, and further comprising an anode replacement device in contact with the spray liquid sprayed by the spray device and / or the spray liquid to be sprayed, a temperature control device for controlling the temperature of the anode replacement device, an ion concentration detection device for detecting the cathode ion concentration in the spray liquid, and a processor electrically connected to the temperature control device and the ion concentration detection device, wherein the reducing property of the material of the anode replacement device is higher than the reducing property of the material of the portion of the condenser in contact with the liquid, and the temperature control device controls the temperature of the anode replacement device;

[0014] The processor is configured to:

[0015] The concentration of cathode ions in the spray liquid is obtained by the ion concentration detection device;

[0016] If the concentration of cathode ions in the spray liquid exceeds a preset value, the temperature control device is controlled to heat the anode replacement device to accelerate the reaction between the anode replacement device and the cathode ions in the spray liquid.

[0017] Preferably, the temperature control device includes a heating resistor, a piezoelectric device electrically connected to the heating resistor, and an energy storage element;

[0018] Wherein, the piezoelectric device is used to output voltage;

[0019] The heating resistor is used to heat the anode replacement device;

[0020] The energy storage element is used to store the electrical energy output by the piezoelectric device.

[0021] Preferably, the piezoelectric device is arranged at a position away from the spraying device, so that the spray liquid sprayed by the spraying device hits the piezoelectric device with a preset kinetic energy during the falling process, so that the piezoelectric device outputs a voltage.

[0022] Preferably, the ion concentration detection device is an electrode detection device, which is placed in the spray liquid in the spray liquid collection tank and away from the anode replacement device. The processor is specifically used to:

[0023] obtaining a potential difference of the electrode detection device;

[0024] According to the potential difference and the preset relationship table, the concentration of cathode ions in the spray liquid corresponding to the potential difference of the electrode detection device is searched, wherein the preset relationship table records the corresponding relationship between the potential difference of the electrode detection device and the corresponding cathode ion concentration in the spray liquid.

[0025] Preferably, the ion concentration detection device is an electrode detection device, which is placed in the spray liquid in the spray liquid collection tank and away from the anode replacement device. The processor is specifically used to:

[0026] obtaining a potential difference of the electrode detection device;

[0027] The concentration of cathode ions in the spray liquid corresponding to the potential difference of the electrode detection device is calculated based on the potential difference and the fitting function, wherein the fitting function represents the functional relationship between the potential difference of the electrode detection device and the cathode ion concentration in the spray liquid.

[0028] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0029] The evaporative condenser unit in the embodiment of the present application includes a condenser, a spray device for spraying liquid into the condenser, and a spray liquid collection tank located on the lower side of the condenser. It is characterized in that it also includes an anode replacement device that contacts the spray liquid sprayed by the spray device and / or the spray liquid to be sprayed, and a temperature control device for controlling the temperature of the anode replacement device, wherein the reducing property of the material of the anode replacement device is higher than the reducing property of the part of the condenser that is in contact with the liquid, and the temperature control device controls the temperature of the anode replacement device.

[0030] Because the reducing property of the material of the anode replacement device 3 in the embodiment of the present application is stronger than that of the exposed material of the condenser 1, the anode replacement device 3 can react with the cathode ions in the spray liquid preferentially compared with the condenser 1, thereby effectively extending the service life of the condenser 1.

[0031] Furthermore, in order to avoid the problem of damage to the condenser far away from the anode replacement device 3 due to untimely reaction of the cathode ions in the spray liquid with the anode replacement device 3, the anode replacement device 3 can also be heated by the temperature device 4 to accelerate the reaction of the anode replacement device 3 with the cathode ions in the spray liquid, thereby avoiding the problem of corrosion of some condensers far away from the anode replacement device 3. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of an embodiment of an evaporative condenser unit in an embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of another embodiment of the evaporative condenser unit in the embodiment of the present application;

[0034] Figure 3 This is a schematic structural diagram of an electrode detection device in an embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of another embodiment of the evaporative condenser unit in the embodiment of the present application;

[0036] Figure 5 This is a schematic diagram of another embodiment of the evaporative condenser unit in the embodiment of the present application;

[0037] Figure 6 This is a schematic diagram of the temperature control process of the temperature control device by the processor of the evaporative condenser unit in the embodiment of the present application.

[0038] The following are marked in the accompanying drawings:

[0039] Condenser 1, spray device 2, anode replacement device 3, temperature control device 4, spray liquid collection tank 5, ion concentration detection device 6, piezoelectric device 41, heating resistor 42, energy storage element 43, reference electrode 61, indicator electrode 62, potential display device 63. DETAILED DESCRIPTION

[0040] An embodiment of the present invention discloses an evaporative condenser unit, which heats an anode replacement device through a temperature control device, thereby accelerating the reaction between the anode replacement device and cathode ions in the spray liquid, thereby reducing corrosion of the condenser by cathode ions in the spray liquid.

[0041] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0042] The terms "first," "second," "third," "fourth," and the like in the specification and claims of the present invention and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] In order to avoid corrosion to the condenser in the evaporative condenser unit, an embodiment of the present application provides an evaporative condenser unit that can accelerate the reaction between the anode replacement device and the cathode ions in the spray liquid to reduce corrosion to the part of the condenser away from the anode replacement device.

[0044] The following is a detailed description:

[0045] See also Figure 1 The evaporative condenser unit includes a condenser 1, a spray device 2, an anode replacement device 3, a temperature control device 4 and a spray liquid collection tank 5.

[0046] A heat exchange cavity is formed inside the condenser 1 for circulating high-temperature fluid. When the high-temperature fluid passes through the condenser cavity, it will conduct heat with the cavity wall of the condenser 1, so that the heat can be transferred to the outside of the condenser 1 through the cavity wall of the condenser 1, and then the heat can be absorbed by objects outside the condenser 1, such as air, thereby achieving the effect of heat dissipation.

[0047] The spray device 2 is used to spray a spray liquid toward the condenser 1. When the spray liquid contacts the outer wall of the condenser 1 or the air near the outer wall, it absorbs heat and evaporates, thereby rapidly cooling the outer wall of the condenser 1 and the air near the outer wall. The spray liquid is generally water, but it can also be other liquids that evaporate easily and absorb heat. To avoid wasting the spray liquid, a spray liquid collection tank 5 is generally provided below the spray device and the condenser to collect the spray liquid that has not undergone a phase change after contacting the outer wall of the condenser 1 or the air near the outer wall.

[0048] The reducing property of the material of the anode replacement device 3 is higher than that of the exposed material of the condenser 1, so that the anode replacement device 3 can react with the cathode ions in the spray liquid more easily than the condenser 1. Because the anode replacement device 3 can contact the spray liquid sprayed by the spray device 2 and / or the spray liquid to be sprayed, the cathode ions in the spray liquid sprayed by the spray device 2 and / or the spray liquid to be sprayed can react with the anode replacement device 3 more directly, thereby reducing the reaction between the cathode ions in the spray liquid and the exposed material of the condenser 1, thereby avoiding corrosion of the condenser.

[0049] It should be noted that the anode replacement device 3 can be a powder-type anode replacement device, or a block-type, rod-type, mesh-type, plate-type, or other structured anode replacement device 3. Specifically, the anode replacement device 3 may be a magnesium component. Mg (magnesium) reacts more easily with cathode ions in the spray liquid than metals such as Al (aluminum), Cu (copper), and Fe (iron). The material of the anode replacement device can be specifically selected based on the material of the condenser, so that the reducibility of the anode replacement device 3 material is higher than that of the exposed material of the condenser 1.

[0050] In addition, it should be noted that the anode replacement device 3 only needs to be in contact with the spray liquid sprayed by the spray device, and the position of the anode replacement device 3 in the evaporative condenser unit is not specifically limited here.

[0051] Furthermore, in order to avoid the problem that the condenser material far away from the installation location of the anode replacement device is oxidized due to its installation location, or the cathode ion concentration in the spray liquid is too high, which causes the cathode ions in the spray liquid to fail to react with the anode replacement device in time and cause part of the condenser to be corroded, the embodiment of the present application is provided with a temperature control device 4 for controlling the temperature of the anode replacement device in the evaporative condenser unit, which is used to control the temperature of the anode replacement device 3 (such as heating the anode replacement device), thereby accelerating the reaction of the anode replacement device 3 with the cathode ions in the spray liquid, thereby avoiding the problem that the cathode ion concentration in the spray liquid is too high, which causes the cathode ions in the spray liquid to fail to react with the anode replacement device in time and cause part of the condenser to be corroded.

[0052] Specifically, the temperature control device in the embodiment of the present application can be directly set on a part of the surface of the anode replacement device to heat the anode replacement device, or be set near the anode replacement device to indirectly heat the anode replacement device. There is no specific restriction on the setting position of the temperature control device and the way in which the temperature control device heats the anode replacement device.

[0053] During use of the evaporative condenser unit, spray liquid is circulated and sprayed out through the spray device 2. Because the anode replacement device 3 can contact the spray liquid, and the reducing property of the material of the anode replacement device 3 is stronger than the reducing property of the exposed material of the condenser 1, the anode replacement device 3 can react with the cathode ions in the spray liquid preferentially compared with the condenser 1, thereby effectively extending the service life of the condenser 1.

[0054] Furthermore, in order to avoid the problem of damage to the condenser far away from the anode replacement device 3 due to untimely reaction of the cathode ions in the spray liquid with the anode replacement device 3, the anode replacement device 3 can also be heated by the temperature device 4 to accelerate the reaction of the anode replacement device 3 with the cathode ions in the spray liquid, thereby avoiding the problem of corrosion of some condensers far away from the anode replacement device 3.

[0055] As a specific example, please refer to Figure 2 :exist Figure 1 Based on the embodiment, the evaporative condenser unit further includes an ion concentration detection device 6 for detecting the cathode ion concentration in the spray liquid.

[0056] In order to save energy, the embodiment of the present application can also selectively control the temperature control device 4 to heat the anode replacement device 3 according to the concentration of cathode ions in the spray liquid detected by the ion concentration detection device 6. For example, when the ion concentration detection device 6 detects that the concentration of cathode ions in the spray liquid is greater than a preset threshold, the temperature control device 4 is started to avoid energy waste when the cathode ion concentration in the spray liquid is too low.

[0057] Specifically, the ion concentration detection device 6 in the embodiment of the present application may be an electrode detection device. For ease of understanding, Figure 3 A schematic diagram of the electrode detection device is provided, wherein the electrode detection device includes a reference electrode 61, an indicator electrode 62, and a potential indicator device 63. The electrode detection device employs potentiometric analysis, an electrochemical analysis method that determines the concentration of specific ions in the spray liquid based on the quantitative relationship between electromotive force and the concentration of a certain ion in the spray liquid (e.g., the Nernst equation). The spray liquid is used as the electrolyte solution of a chemical cell, into which two electrodes are inserted. One electrode, whose potential changes with changes in the concentration of the ion to be measured in the spray liquid, is called the indicator electrode (often serving as the negative electrode), and the other electrode, whose potential remains essentially stable at a certain temperature and does not change with changes in the ion to be measured in the spray liquid, is called the reference electrode (often serving as the positive electrode). The concentration of the specific ion in the spray liquid is determined by measuring the electromotive force of this cell.

[0058] Furthermore, in order to avoid the problem of inaccurate detection of cathode ion concentration in the spray liquid caused by the ion concentration detection device 6 being installed near the anode replacement device 3, the embodiment of the present application preferably installs the ion concentration detection device 6 in the spray liquid collection tank 5 away from the anode replacement device 3.

[0059] As a specific example, please refer to Figure 4 :exist Figure 1 Based on the examples, the examples of this application will Figure 1 The temperature control device 4 is configured as a piezoelectric device 41 and a heating resistor 42 electrically connected to the piezoelectric device. For ease of understanding, Figure 4 A schematic diagram of a piezoelectric device 41 and a heating resistor 42 electrically connected to the piezoelectric device is provided.

[0060] As a possible implementation method, the embodiment of the present application sets the heating resistor 42 on a part of the surface of the anode replacement device 3 for directly heating the anode replacement device 3, and sets the piezoelectric device 41 at a position away from the spray device 2, so that the spray liquid sprayed by the spray device 2 hits the piezoelectric device with preset kinetic energy during the falling process, so that the piezoelectric device outputs voltage, thereby realizing energy conversion and energy recycling.

[0061] Furthermore, in order to avoid wasting the voltage of the piezoelectric device, Figure 4 The energy storage element 43 is connected between the piezoelectric device 41 and the heating resistor 42 to store the electrical energy output by the piezoelectric device. Figure 5 shown.

[0062] At the same time, the energy storage element 43 in the embodiment of the present application can also heat the anode replacement device 3 through the heating resistor when the spray device 2 is not spraying, thereby ensuring the timely reaction of the anode replacement device 3 with the cathode ions in the spray liquid, so as to avoid the corrosion of the cathode ions in the spray liquid on the part of the condenser away from the anode replacement device 3.

[0063] based on Figures 1 to 5 The evaporative condenser unit in the embodiment of the present invention will be described below. The process of the temperature control device heating the anode replacement device 3 is described below.

[0064] As an optional embodiment, the temperature control device 4 in the embodiment of the present application includes the following Figure 4 and Figure 5The piezoelectric device and heating resistor shown in the figure, if the spray liquid of the spray device 2 hits the piezoelectric device with a preset kinetic energy, the piezoelectric device is subjected to a certain pressure, and the piezoelectric device outputs a voltage, and then the voltage causes the generating resistor to heat up, thereby heating the anode replacement device 3, that is, when the spray device 2 sprays the spray liquid, the anode replacement device 3 is heated immediately, thereby accelerating the reaction of the anode replacement device 3 with the cathode ions in the spray liquid to avoid corrosion of the part of the condenser away from the anode replacement device 3.

[0065] Further, as another optional embodiment, please refer to Figure 6 The evaporative condenser unit in the embodiment of the present application further includes a processor, wherein the processor establishes a communication connection with the temperature control device 4 and the ion concentration detection device 6 to perform the following steps:

[0066] 601. Obtaining the concentration of cathode ions in the spray liquid through an ion concentration detection device;

[0067] As another optional embodiment, in order to avoid the temperature control device 4 from continuously heating the anode replacement device 3 , thereby causing unnecessary energy waste.

[0068] The processor in the embodiment of the present application can also obtain the concentration of cathode ions in the spray liquid through the ion concentration detection device 6, and execute step 602 according to the concentration of cathode ions in the spray liquid.

[0069] Specifically, the process of how the processor controls the concentration of cathode ions in the spray liquid will be described in the following embodiments and will not be repeated here.

[0070] 602. If the concentration of cathode ions in the spray liquid exceeds a preset value, control the temperature control device to heat the anode replacement device to accelerate the reaction between the anode replacement device and the cathode ions in the spray liquid.

[0071] If the concentration of cathode ions in the spray liquid exceeds a preset value, that is, the concentration of cathode ions in the spray liquid causes damage to the portion of the condenser away from the anode replacement device 3, the processor controls the temperature control device 4 to heat the anode replacement device 3 to accelerate the reaction between the anode replacement device and the cathode ions in the spray liquid, thereby avoiding damage to the portion of the condenser away from the anode replacement device 3.

[0072] based on Figure 6 In step 601, the following describes how the processor obtains the concentration of cathode ions in the spray liquid:

[0073] As an optional embodiment, the ion concentration detection device in the embodiment of the present application is an electrode detection device, wherein the electrode detection device includes a reference electrode 61, an indicator electrode 62 and a potential indicating device 63. Among them, the electrode detection device adopts a potentiometric method, which is an electrochemical analysis method for measuring the concentration of specific ions in the spray liquid based on the quantitative relationship between the electromotive force and the concentration of a certain ion in the spray liquid (such as the Nernst equation). It uses the spray liquid as the electrolyte solution of the chemical battery, and inserts two electrodes into it. The potential of one electrode changes with the change of the concentration of the ion to be measured in the spray liquid, and is used to indicate the concentration of the ion to be measured in the spray liquid. It is called the indicator electrode (usually the negative electrode). The other electrode is a reference electrode (usually the positive electrode) whose electrode potential is basically stable at a certain temperature and does not change with the change of the ion to be measured in the spray liquid. The concentration of the specific ion in the spray liquid is determined by measuring the electromotive force of the electrode detection device.

[0074] Specifically, the processor can search for the concentration of cathode ions in the spray liquid corresponding to the potential difference of the electrode detection device based on the potential difference of the electrode detection device and a preset relationship table, wherein the preset relationship table records the correspondence between the potential difference of the electrode detection device and the cathode ion concentration in the spray liquid, and this relationship can be an empirical value obtained based on a large number of experiments.

[0075] In addition, the processor can also calculate the concentration of cathode ions in the spray liquid corresponding to the potential difference of the electrode detection device based on the potential difference of the electrode detection device and the fitting function, wherein the fitting function represents the functional relationship between the potential difference of the electrode detection device and the cathode ion concentration in the spray liquid. This functional relationship can be based on a large amount of data between the ion concentration in the spray liquid and the potential difference of the electrode detection device, and a preset fitting algorithm (such as the least squares method).

[0076] In the embodiment of the present application, a detailed description is given of how the processor obtains the cathode ion concentration in the spray liquid based on the potential difference of the electrode detection device, thereby improving the reliability of the process of obtaining the cathode ion concentration in the spray liquid in the embodiment of the present application.

[0077] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0078] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An evaporative condenser unit comprising a condenser, a spraying device for spraying liquid into the condenser, and a spray liquid collecting tank located under the condenser, characterized in that: It also includes an anode replacement device that contacts the spray liquid sprayed by the spray device and / or the spray liquid to be sprayed, and a temperature control device that controls the temperature of the anode replacement device, wherein the reducing property of the material of the anode replacement device is higher than the reducing property of the part of the condenser that contacts the liquid, and the temperature control device controls the temperature of the anode replacement device; the temperature control device includes: a heating resistor, and a piezoelectric device electrically connected to the heating resistor, wherein the heating resistor is arranged on a portion of the surface of the anode replacement device.

2. The evaporative condenser unit according to claim 1, characterized in that: The evaporative condenser unit further comprises an ion concentration detection device for detecting the cathode ion concentration in the spray liquid.

3. The evaporative condenser unit according to claim 2, characterized in that: The ion concentration detection device is an electrode detection device, which is used to monitor the concentration of cathode ions in the spray liquid through the potential of the electrode.

4. The evaporative condenser unit according to claim 3, characterized in that: The electrode detection device is arranged in the spray liquid collecting tank and is far away from the position of the anode replacement device.

5. The evaporative condenser unit according to claim 1, characterized in that: The piezoelectric device is arranged at a position far away from the spraying device, so that the spray liquid sprayed by the spraying device hits the piezoelectric device with preset kinetic energy during the falling process, so that the piezoelectric device outputs voltage.

6. The evaporative condenser unit according to claim 1, characterized in that: The temperature control device further includes: an energy storage element for storing the electrical energy output by the piezoelectric device.

7. An evaporative condenser unit comprising a condenser, a spraying device for spraying liquid into the condenser, and a spray liquid collecting tank located below the condenser, characterized in that: The apparatus further comprises an anode replacement device in contact with the spray liquid sprayed by the spray device and / or the spray liquid to be sprayed, a temperature control device for controlling the temperature of the anode replacement device, an ion concentration detection device for detecting the concentration of cathode ions in the spray liquid, and a processor electrically connected to the temperature control device and the ion concentration detection device, wherein the reducing property of the material of the anode replacement device is higher than the reducing property of the material of the portion of the condenser in contact with the liquid, the temperature control device controls the temperature of the anode replacement device, and the temperature control device comprises: a heating resistor, and a piezoelectric device electrically connected to the heating resistor; The processor is configured to: The concentration of cathode ions in the spray liquid is obtained by the ion concentration detection device; If the concentration of cathode ions in the spray liquid exceeds a preset value, the temperature control device is controlled to heat the anode replacement device to accelerate the reaction between the anode replacement device and the cathode ions in the spray liquid.

8. The evaporative condenser unit according to claim 7, characterized in that: The temperature control device also includes an energy storage element; Wherein, the piezoelectric device is used to output voltage; The heating resistor is used to heat the anode replacement device; The energy storage element is used to store the electrical energy output by the piezoelectric device.

9. The evaporative condenser unit according to claim 8, characterized in that: The piezoelectric device is arranged at a position far away from the spraying device, so that the spray liquid sprayed by the spraying device hits the piezoelectric device with preset kinetic energy during the falling process, so that the piezoelectric device outputs voltage.

10. The evaporative condenser unit according to claim 7, characterized in that: The ion concentration detection device is an electrode detection device, which is placed in the spray liquid in the spray liquid collection tank and away from the anode replacement device. The processor is specifically used to: obtaining a potential difference of the electrode detection device; According to the potential difference of the electrode detection device and the preset relationship table, the concentration of cathode ions in the spray liquid corresponding to the potential difference of the electrode detection device is searched, wherein the preset relationship table records the corresponding relationship between the potential difference of the electrode detection device and the corresponding cathode ion concentration in the spray liquid.

11. The evaporative condenser unit according to claim 7, characterized in that: The ion concentration detection device is an electrode detection device, which is placed in the spray liquid in the spray liquid collection tank and away from the anode replacement device. The processor is specifically used to: obtaining a potential difference of the electrode detection device; The concentration of cathode ions in the spray liquid corresponding to the potential difference of the electrode detection device is calculated based on the potential difference of the electrode detection device and a fitting function, wherein the fitting function represents the functional relationship between the potential difference of the electrode detection device and the cathode ion concentration in the spray liquid.

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