Condenser and its control method

Abstract

This application relates to the field of refrigeration equipment technology, specifically to a condenser and its control method. The condenser control method includes: acquiring the condenser's operating mode, including a wet operating mode and a dry operating mode; determining that the condenser is in dry operating mode and controlling the opening of the bypass ventilation damper to its maximum; determining that the condenser is in wet operating mode and acquiring the internal and external ambient temperatures of the condenser; comparing the internal and external ambient temperatures, and based on the comparison result, adjusting the opening of the bypass ventilation damper to reduce the condensing pressure of the condenser. By adjusting the opening of the bypass ventilation damper in both dry and wet operating modes, the airflow directly blowing onto the second heat exchanger is appropriately adjusted, thereby adjusting the internal air resistance and condensing pressure of the condenser, maintaining the condenser in an optimal operating state, and reducing the condenser's energy consumption.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, specifically to a condenser and its control method. Background Technology

[0002] In recent years, with the rapid development of various industries, the number of sectors requiring year-round cooling has been increasing, leading to a corresponding rise in energy consumption. Taking data centers as an example, data center server rooms house a large number of servers, storage, and network equipment, generating enormous amounts of heat. This heat needs to be dissipated almost year-round, making air conditioning systems a significant portion of the total energy consumption in data centers. Reducing the energy consumption of air conditioning systems is a crucial issue that urgently needs to be addressed in technological development. The condenser is a vital component of the air conditioning system, used for heat exchange and cooling of the refrigerant, allowing it to continue exchanging heat with the indoor air and lowering the indoor temperature. The condenser uses a fan to drive the convection of indoor and outdoor air, carrying away the heat from the refrigerant. However, in some technologies, due to improper condenser design, changes in the environment during operation result in high internal air resistance, creating significant operating pressure on the fan and increasing the condenser's energy consumption. Summary of the Invention

[0003] This application provides a condenser control method to solve the technical problems of high internal air resistance and high energy consumption in condensers.

[0004] Therefore, this application provides a method for controlling a condenser, comprising:

[0005] The operating mode of the condenser is obtained, including a wet operating mode and a dry operating mode;

[0006] Determine that the condenser is in dry operation mode, and control the opening of the bypass ventilation damper to the maximum opening.

[0007] Determine that the condenser is in wet operation mode, and obtain the internal ambient temperature and external ambient temperature of the condenser;

[0008] The internal ambient temperature and the external ambient temperature are compared. Based on the comparison result, the opening of the bypass ventilation damper is adjusted to reduce the condensing pressure of the condenser.

[0009] In one embodiment, the step of comparing the internal ambient temperature and the external ambient temperature, and adjusting the opening of the bypass ventilation damper based on the comparison result to reduce the condensing pressure of the condenser includes:

[0010] If the internal ambient temperature is determined to be lower than the external ambient temperature, the bypass ventilation door is controlled to close.

[0011] If the internal ambient temperature is determined to be greater than or equal to the external ambient temperature, the opening of the bypass ventilation door is increased by a first change.

[0012] In one embodiment, after determining that the internal ambient temperature is greater than or equal to the external ambient temperature, and increasing the opening of the bypass ventilation door by a first change, the method further includes:

[0013] Obtain the first change value of the condensing pressure of the condenser;

[0014] If the first change value is determined to be greater than or equal to zero, the opening of the bypass ventilation door is reduced by a second change amount;

[0015] If the first change value is determined to be less than zero, the opening of the bypass ventilation door is increased by a second change amount.

[0016] In one embodiment, after determining that the first change value is greater than or equal to zero, and the step of reducing the opening of the bypass ventilation door by a second change amount, the method further includes:

[0017] Obtain the second change value of the condensation pressure;

[0018] Once the second change value is determined to be less than zero, the opening of the bypass ventilation door is reduced by a third change amount until the second change value is greater than or equal to zero. Then, the opening of the bypass ventilation door is increased by a third change amount and remains unchanged.

[0019] In one embodiment, after determining that the first change value is less than zero and controlling the opening of the bypass ventilation door to increase by a second change amount, the method further includes:

[0020] Obtain the third change value of the condensing pressure of the condenser;

[0021] Once the third change value is determined to be less than zero, the opening of the bypass ventilation door is increased by a fourth change amount until the third change value is greater than or equal to zero. Then, the opening of the bypass ventilation door is decreased by the fourth change amount and remains unchanged.

[0022] In one embodiment, the step of obtaining the operating mode of the condenser, wherein the operating mode includes a wet operating mode and a dry operating mode, comprises:

[0023] Obtain the actual water level in the condenser's drip tray and compare it with a preset height.

[0024] When the actual water level is greater than the preset height, the condenser is in wet operation mode.

[0025] When the actual water level is less than or equal to the preset height, the condenser is in dry operation mode.

[0026] This application also provides a condenser, comprising:

[0027] The enclosure is provided with an air inlet and a bypass outlet;

[0028] A fan, which is connected to and communicates with the housing;

[0029] The first heat exchanger is disposed inside the housing and located between the air inlet and the fan;

[0030] A water distributor is disposed inside the box and is positioned facing the first heat exchanger to spray water onto the surface of the first heat exchanger.

[0031] The second heat exchanger is located between the first heat exchanger and the fan, and is connected to the first heat exchanger. The bypass port is located between the first heat exchanger and the second heat exchanger.

[0032] In one embodiment, a bypass ventilation door is provided at the bypass port, the opening degree of the bypass ventilation door is adjustable, the condenser also includes a controller, the controller executes the steps of the above-described condenser control method, and the controller is communicatively connected to the bypass ventilation door and the fan.

[0033] In one embodiment, the condenser further includes a first temperature sensor and a second temperature sensor, both of which are connected to the controller. The first temperature sensor is located inside the housing, and the second temperature sensor is located outside the housing.

[0034] In one embodiment, the first temperature sensor is located between the first heat exchanger and the second heat exchanger.

[0035] This application also provides an electronic device, including a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the steps of the condenser control method as described above.

[0036] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the condenser control method as described above.

[0037] According to the condenser control method provided in this application, by adjusting the opening of the bypass ventilation damper in both dry and wet operating modes of the condenser, the airflow directly blowing onto the second heat exchanger is appropriately adjusted, thereby adjusting the internal air resistance and condensing pressure of the condenser, keeping the condenser in a better operating state, and reducing the energy consumption of the condenser. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is one of the structural schematic diagrams of the condenser provided in the embodiments of this application;

[0040] Figure 2 This is the second schematic diagram of the condenser provided in the embodiments of this application.

[0041] Figure 3 This is one of the flowcharts illustrating the control method for a condenser provided in the embodiments of this application.

[0042] Figure 4 This is the second flowchart illustrating the control method for the condenser provided in the embodiments of this application.

[0043] Figure 5 This is a schematic diagram of the physical structure of the electronic device provided in the embodiments of this application. Attached image description:

[0045] 100. Condenser; 110. Housing; 111. Air inlet; 112. Bypass outlet;

[0046] 120. Fan; 121. First heat exchanger; 122. Water distributor; 123. Second heat exchanger; 124. First temperature sensor; 125. Second temperature sensor; 126. Water pump. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] The following is combined with Figures 1 to 5 This application describes the condenser and the control method for the condenser.

[0049] See Figure 1 As shown, the condenser 100 according to an embodiment of this application includes a housing 110, a fan 120, a first heat exchanger 121, a water distributor 122, a second heat exchanger 123, and the fan 120.

[0050] The enclosure 110 is provided with an air inlet 111 and a bypass port 112, through which air flows between the inside and outside of the enclosure 110. The bypass port 112 can connect to the external environment or to an air conditioning system. A fan 120 is connected to and communicates with the enclosure 110, and is used to drive the air flow inside and outside the enclosure 110. The fan 120 can be an EC (Electrical Commutation) axial flow fan.

[0051] The first heat exchanger 121 is located inside the housing 110, between the air inlet 111 and the fan 120. For example... Figure 1 As shown, the fan 120 can be installed at the top of the housing 110, the air inlet 111 is located on the side wall of the housing 110 and near the bottom of the housing 110, and the first heat exchanger 121 is located between the air inlet 111 and the fan 120. Thus, the air whose temperature rises after exchanging heat with the first heat exchanger 121 rises upwards (e.g., ...). Figure 1 The airflow (as shown) is in the same direction as the driving force applied by the fan 120, thereby reducing the air resistance of the housing 110. A water distributor 122 is located inside the housing 110, facing the first heat exchanger 121, to spray water onto the surface of the first heat exchanger 121. Figure 1 As shown, the water distributor 122 can be located above the first heat exchanger 121 (e.g., Figure 1 (As shown in the direction), the outlet of the water distributor 122 faces the first heat exchanger 121. The water distributor 122 sprays water onto the surface of the first heat exchanger 121 to form a water film on the surface of the first heat exchanger 121. When air flows through the first heat exchanger 121, the water on the surface of the first heat exchanger 121 evaporates, carrying away heat. The first heat exchanger 121 can be a plate heat exchanger. The condenser 100 also includes a water pump 126, which is connected to a water source. The water distributor 122 is connected to and communicates with the water pump 126. The water pump 126 drives water to flow towards the water distributor 122 to spray water onto the surface of the first heat exchanger 121.

[0052] The second heat exchanger 123 is located between the first heat exchanger 121 and the fan 120. Air flows through the second heat exchanger 123 and exchanges heat with it. The second heat exchanger 123 can be a parallel flow heat exchanger. The second heat exchanger 123 is connected to the first heat exchanger 121, and the two together define a refrigerant transport channel. The refrigerant flows within this channel, exchanging heat with either the first or second heat exchanger 121 to lower its temperature. The inlet of the refrigerant transport channel can be located on the second heat exchanger 123, and the outlet can be located on the first heat exchanger 121. During operation, the refrigerant first exchanges heat with the second heat exchanger 123 for initial cooling, and then exchanges heat with the first heat exchanger 121 for further temperature reduction.

[0053] like Figure 2 As shown, solid arrows indicate the flow direction of the refrigerant, while hollow arrows indicate the flow direction of the air. During operation, the refrigerant first flows through the second heat exchanger 123 for pre-cooling, then flows through the first heat exchanger 121 for forced heat exchange, causing the refrigerant to condense into a liquid state. The airflow first passes through the first heat exchanger 121, which dissipates heat through water evaporation; therefore, the temperature of the first heat exchanger 121 is lower than that of the second heat exchanger 123. When the refrigerant flows within the refrigerant delivery channel, it first passes through a higher-temperature region and then flows through a lower-temperature region, forming counter-current heat exchange. For the same heat flow rate, counter-current heat exchange requires a smaller heat transfer area, resulting in better heat exchange performance and lower economic investment and maintenance costs.

[0054] like Figure 1 As shown, the bypass port 112 is located between the first heat exchanger 121 and the second heat exchanger 123. The bypass port 112 can provide direct low-temperature fresh air from the outside to the second heat exchanger 123. On the one hand, part of the airflow that exchanges heat with the second heat exchanger 123 flows directly to the second heat exchanger 123 through the bypass port 112 without passing through the first heat exchanger 121, thus reducing air resistance. On the other hand, part of the airflow that flows to the second heat exchanger 123 does not exchange heat with the first heat exchanger 121 and has a lower temperature, thereby increasing the heat exchange capacity, improving the heat exchange efficiency of the condenser 100, and reducing the condensing pressure of the condenser 100.

[0055] According to the embodiments of this application, the condenser 100 provides a portion of the airflow directly to the second heat exchanger 123 through a bypass vent, without needing to pass through the first heat exchanger 121, thus reducing air resistance. The portion of the airflow flowing to the second heat exchanger 123 does not exchange heat with the first heat exchanger 121, resulting in a lower temperature and thus increasing the amount of heat exchanged with the second heat exchanger 123. This improves the heat exchange efficiency of the condenser 100, reduces the condensing pressure of the condenser 100, and lowers energy consumption.

[0056] According to some embodiments of this application, a bypass ventilation damper is provided at the bypass port 112. The opening degree of the bypass ventilation damper is adjustable to regulate the airflow of the bypass port 112, adapting to the operating state of the condenser 100, reducing the condensing pressure, and maintaining the condenser 100 in an optimal operating state. The bypass ventilation damper can be a louver, or it can include a baffle rotatably disposed within the bypass port 112 and a motor, with the motor driving the baffle to rotate to adjust the opening degree of the bypass port 112. The condenser 100 also includes a controller, which is communicatively connected to the bypass ventilation damper and the fan 120 to control the opening degree of the bypass ventilation damper and the rotational speed of the fan 120. The controller is configured to execute the steps of the control method for the condenser 100 described below.

[0057] According to some embodiments of this application, the condenser 100 further includes a first temperature sensor 124 and a second temperature sensor 125, both of which are connected to the controller. The first temperature sensor 124 is located inside the housing 110 to detect the internal ambient temperature of the condenser 100; the second temperature sensor 125 is located outside the housing 110 to detect the external ambient temperature and humidity of the condenser 100.

[0058] It is understandable that when the bypass port 112 is connected to the air conditioning system, the temperature of the airflow directly blown onto the second heat exchanger 123 can be kept lower than the internal ambient temperature of the condenser 100. When the bypass port 112 is connected to the external environment, the external ambient temperature may be higher than the internal ambient temperature. In this case, if air continues to be blown directly onto the second heat exchanger 123 through the bypass port 112, the heat exchange efficiency of the second heat exchanger 123 will be reduced. By detecting the internal and external ambient temperatures of the condenser 100 through the first temperature sensor 124 and the second temperature sensor 125, the controller can adjust the opening of the bypass vent according to the internal and external ambient temperatures, so that the condenser 100 operates in a better operating state (i.e., an operating state with lower condensing pressure). In some embodiments, the first temperature sensor 124 can be located between the first heat exchanger 121 and the second heat exchanger 123 to improve the detection accuracy and better reflect the operating ambient temperature of the second heat exchanger 123.

[0059] In some embodiments, the condenser 100 further includes a drip tray for collecting water falling from the first heat exchanger 121, so as to recycle and reuse the water and reduce waste. Figure 1As shown, the water receiving tray can be located at the bottom of the housing 110, directly below the first heat exchanger 121. The water receiving tray can be connected to the water pump 126, so that the recovered water can be pumped into the water distributor 122 for reuse. A filter can be installed between the water receiving tray and the water pump 126 to filter the recovered water.

[0060] like Figure 3 As shown, the condenser control method according to an embodiment of this application includes:

[0061] S01: Obtain the operating mode of the condenser 100, which includes a wet operating mode and a dry operating mode. Understandably, due to changes in the operating environment of the condenser 100, for example, when the condenser 100 operates in a water-scarce environment, or when the external ambient temperature is below the freezing point of water, making it difficult for the water distributor 122 to spray water onto the first heat exchanger 121, both the first heat exchanger 121 and the second heat exchanger 123 dissipate heat through air cooling; in this case, the condenser 100 is in a dry operating mode. When the water distributor 122 can spray water onto the surface of the first heat exchanger 121, the first heat exchanger 121 dissipates heat through evaporation; in this case, the condenser 100 is in a wet operating mode. In the wet operating mode, the first heat exchanger 121 dissipates heat through evaporative heat exchange, resulting in improved heat exchange efficiency compared to the dry operating mode.

[0062] S10: Determine that the condenser 100 is in dry operation mode and control the opening of the bypass vent to its maximum. In dry operation mode, the heat exchange efficiency of the condenser 100 is low, and the condensing pressure is high. Adjusting the bypass vent to its maximum opening increases the airflow, thereby increasing the airflow that directly exchanges heat with the second heat exchanger 123, improving the heat exchange efficiency of the second heat exchanger 123, and thus improving the overall heat exchange efficiency of the condenser 100 and reducing the condensing pressure of the condenser 100. Furthermore, this airflow flows directly to the second heat exchanger 123 through the bypass port 112, bypassing the first heat exchanger 121, reducing wind resistance and decreasing the energy consumption of the fan 120.

[0063] S20: Determine that the condenser 100 is in wet operation mode, and obtain the internal ambient temperature and external ambient temperature of the condenser 100.

[0064] S30: Compare the internal and external ambient temperatures. Based on the comparison, adjust the opening of the bypass ventilation damper to reduce the condensing pressure of the condenser 100. The internal ambient temperature of the condenser 100 can be detected by a first temperature sensor 124, and the external ambient temperature by a second temperature sensor 125. In wet operation mode, the water distributor 122 sprays water onto the surface of the first heat exchanger 121, forming a water film. The evaporation of this water film carries away heat from the first heat exchanger 121. Adjusting the opening of the bypass ventilation damper based on the comparison of the internal and external ambient temperatures appropriately regulates the airflow directly blowing onto the second heat exchanger 123, thereby adjusting the air resistance and condensing pressure inside the condenser 100 to maintain it in optimal operating condition. Understandably, in wet operation mode, due to the evaporation of water film on the surface of the first heat exchanger 121 inside the condenser 100, the air humidity inside the condenser 100 is different from that of the external environment. Since air humidity and temperature both affect wind resistance and heat exchange efficiency, the opening of the bypass ventilation damper is adjusted based on the comparison between the internal and external ambient temperatures so that the condenser 100 operates in a state with lower wind resistance and lower condensation pressure.

[0065] According to the condenser control method of the present application embodiment, by adjusting the opening of the bypass ventilation damper of the condenser 100 in dry working mode and wet working mode respectively, the air flow directly blown to the second heat exchanger 123 is appropriately adjusted, thereby adjusting the wind resistance and condensing pressure inside the condenser 100, so that the condenser 100 is kept in a better operating state and the energy consumption of the condenser 100 is reduced.

[0066] According to some embodiments of this application, step S01 includes:

[0067] S011: Obtain the actual water level in the condenser 100's drip tray and compare it with the preset height.

[0068] S012: When the actual water level is greater than the preset height, the condenser 100 is in wet working mode.

[0069] S013: When the actual water level is less than or equal to the preset height, the condenser 100 is in dry operation mode. In wet operation mode, the water distributor 122 sprays water onto the surface of the first heat exchanger 121, and any unevaporated water falls into the water collection tray. In dry operation mode, the water distributor 122 does not spray water onto the surface of the first heat exchanger 121, or the amount of water sprayed onto the surface of the first heat exchanger 121 is small, and at this time, no water or very little water falls into the water collection tray. Therefore, the operating mode of the condenser 100 is determined by detecting the actual water level in the water collection tray and comparing it with the preset height.

[0070] According to some embodiments of this application, step S30 includes:

[0071] S31: When the internal ambient temperature is determined to be lower than the external ambient temperature, the bypass ventilation damper is closed. When the internal ambient temperature is higher than the external ambient temperature (meaning the air temperature reaching the second heat exchanger 123 after passing through inlet 111 and the first heat exchanger 121 is lower than the outside air temperature), directly blowing outside air onto the second heat exchanger 123 through the bypass ventilation damper would reduce its heat exchange efficiency. Therefore, when the internal ambient temperature is higher than the external ambient temperature, the bypass ventilation damper is closed to ensure the heat exchange efficiency of the second heat exchanger 123.

[0072] S32: When the internal ambient temperature is greater than or equal to the external ambient temperature, the opening of the bypass ventilation damper is increased by the first change. When the internal ambient temperature is greater than or equal to the external ambient temperature, the opening of the bypass ventilation damper is increased, allowing some air to enter from the bypass port 112 and be blown towards the second heat exchanger 123 to exchange heat with the second heat exchanger 123, thereby improving the heat exchange efficiency of the second heat exchanger 123. Furthermore, the air blown from the bypass port 112 to the second heat exchanger 123 does not pass through the first heat exchanger 121, resulting in lower wind resistance, reduced load on the fan 120, and lower energy consumption.

[0073] According to some embodiments of this application, the process after step S32 further includes:

[0074] S33: Obtain the first change value of the condensing pressure of the condenser 100. This can be obtained by detecting the change value of the condensing pressure of the refrigerant in the condenser 100 using a pressure sensor.

[0075] S34: Determine that the first change value is greater than or equal to zero, and decrease the opening of the bypass damper by the second change amount. When the first change value is greater than or equal to zero, it means that in step S32, increasing the opening of the bypass damper will lead to a decrease in the heat exchange efficiency of the condenser 100 and an increase in the condensing pressure. At this time, the opening of the bypass damper is reduced to reduce the flow rate of the air entering through the bypass port 112, thereby reducing the condensing pressure.

[0076] S35: Determine that the first change value is less than zero, and control the opening of the bypass damper to increase the second change amount. When the first change value is less than zero, it means that increasing the opening of the bypass damper improves the heat exchange efficiency of the condenser 100 and reduces the condensing pressure. At this time, the opening of the bypass damper can be further increased to further reduce the condensing pressure.

[0077] According to some embodiments of this application, the process after step S34 further includes:

[0078] S341: Obtain the second change value of the condensing pressure. This can be obtained by detecting the change in the condensing pressure of the refrigerant in the condenser 100 using a pressure sensor.

[0079] S342: If the second change value is determined to be less than zero, the opening of the bypass ventilation door is reduced by the third change amount until the second change value is greater than or equal to zero. Then, the opening of the bypass ventilation door is increased by the third change amount and remains unchanged.

[0080] After step S34, the change in condensation pressure of condenser 100 is detected again to obtain a second change value. When the second change value is less than zero, it indicates that after the operation of reducing the opening of the bypass damper by the second change amount in step S34, the condensation pressure has decreased, the heat exchange efficiency of condenser 100 has increased, and energy consumption has decreased. At this time, the opening of the bypass damper is reduced by a third change amount, reducing the air flow rate input through bypass port 112. Then, the second change value of condensation pressure is detected again. If the second change value is less than zero, the process continues, and so on, continuously reducing the opening of the bypass damper to lower the condensation pressure. This continues until the second change value of condensation pressure is greater than or equal to zero. At this point, further reducing the opening of the bypass damper will increase the condensation pressure. Therefore, when the second change value of condensation pressure is greater than or equal to zero, the opening of the bypass damper is increased by a third change amount and maintained at the bypass damper opening, so that condenser 100 operates in an optimal operating state, completing the adjustment.

[0081] According to some embodiments of this application, the process further includes the following after step S35:

[0082] S351: Obtain the third change value of the condensing pressure of condenser 100. This can be obtained by detecting the change value of the condensing pressure of the refrigerant in condenser 100 using a pressure sensor.

[0083] S352: When the third change value is determined to be less than zero, the opening of the bypass ventilation door is increased by the fourth change amount until the third change value is greater than or equal to zero. Then, the opening of the bypass ventilation door is decreased by the fourth change amount and remains unchanged.

[0084] After step S35, the change in condensation pressure of condenser 100 is detected again to obtain a third change value. When the third change value is less than zero, it indicates that after the operation of increasing the opening of the bypass damper by the second change amount in step S35, the condensation pressure decreased, the heat exchange efficiency of condenser 100 increased, and energy consumption decreased. At this time, the opening of the bypass damper is increased by the fourth change amount, increasing the air flow rate input through bypass port 112. Then, the third change value of condensation pressure is continuously obtained. If the third change value is less than zero, the process continues, and so on, continuously increasing the opening of the bypass damper to decrease the condensation pressure. This continues until the third change value of condensation pressure is greater than or equal to zero. At this point, further increasing the opening of the bypass damper will increase the condensation pressure. Therefore, when the obtained third change value of condensation pressure is greater than or equal to zero, the opening of the bypass damper is decreased by the fourth change amount and the opening of the bypass damper is maintained, so that condenser 100 operates in an optimal operating state, completing the adjustment. It is understood that the first, second, third, and fourth changes mentioned above are all positive values, and any two of them may be equal or unequal. During the control process of the above-mentioned control method for the condenser 100, when adjusting the opening of the bypass ventilation damper, the compressor, fan 120, expansion valve, and other components of the condenser 100 can be kept running in a stable state.

[0085] The following embodiment is provided to help understand the control method of the condenser 100 of this application.

[0086] like Figure 4 As shown, after the condenser 100 has been running for a period of time, the actual water level in the drip tray is detected. When the actual water level is less than or equal to the preset height, it indicates that the condenser 100 is in dry working mode. At this time, the opening of the bypass vent is adjusted to the maximum opening to improve the heat exchange efficiency of the second heat exchanger 123.

[0087] When the actual water level is greater than the preset height, it indicates that the condenser 100 is in wet operation mode. The controller then acquires the internal ambient temperature detected by the first temperature sensor 124 and the external ambient temperature detected by the second temperature sensor 125. Comparing the internal and external ambient temperatures, if the internal ambient temperature is lower than the external ambient temperature, the controller closes the bypass ventilation door to prevent air from being directly blown into the second heat exchanger 123 through the bypass port 112, thus ensuring the heat exchange efficiency of the second heat exchanger 123.

[0088] When the internal ambient temperature is greater than or equal to the external ambient temperature, the opening of the bypass ventilation damper increases by a first change, and the condensing pressure of the condenser 100 is monitored in real time. After the opening of the bypass ventilation damper increases by the first change, the first change value of the condensing pressure is obtained.

[0089] When the first change value is greater than or equal to zero, it indicates that increasing the bypass damper will increase the condensing pressure, which is detrimental to heat exchange. At this time, the opening of the bypass damper is controlled to decrease by the second change amount, and the condensing pressure of the condenser 100 is monitored in real time. After the opening of the bypass damper decreases by the second change amount, the second change value of the condensing pressure is obtained. When the second change value is less than zero, the opening of the bypass damper is decreased by the third change amount. After the opening of the bypass damper decreases by the third change amount, the second change value of the condensing pressure is obtained, and the opening of the bypass damper is adjusted based on the second change value until the second change value is greater than or equal to zero. Then, the opening of the bypass damper is increased by the third change amount and remains unchanged.

[0090] For example, after the bypass vent opening is reduced by the third change amount D3 for the nth time, the bypass vent opening is Pn. Then, the second change value d2 of the condensing pressure is obtained. When d2 is greater than or equal to zero, it indicates that the nth reduction of the bypass vent opening by the third change amount has led to an increase in condensing pressure, which is detrimental to heat exchange. At this time, the bypass vent opening is controlled to be P = Pn + D3 and kept constant, thus completing this control operation. Afterwards, the step of obtaining the actual water level height of the condenser 100's drip tray can be executed, entering the next control cycle.

[0091] When the first change value is less than zero, it indicates that increasing the bypass damper can reduce the condensing pressure. At this point, the opening of the bypass damper is further increased by a second change value, and the condensing pressure of the condenser 100 is monitored in real time. After the bypass damper opening is increased by the second change value, the third change value of the condensing pressure is obtained. When the third change value is less than zero, the opening of the bypass damper is increased by a fourth change value. The opening of the bypass damper is then increased by the fourth change value, and the third change value of the condensing pressure is obtained. Based on this third change value, the opening of the bypass damper is adjusted until the third change value is greater than or equal to zero. After this adjustment, the opening of the bypass damper is reduced by the fourth change value and remains constant.

[0092] For example, after the bypass vent opening is increased by the fourth change amount D4 for the mth time, the bypass vent opening is Pm. Then, the third change value d3 of the condensing pressure is obtained. When d3 is greater than or equal to zero, it indicates that the mth increase of the bypass vent opening by the fourth change amount has led to an increase in condensing pressure, which is detrimental to heat exchange. At this time, the bypass vent opening is controlled to be P = Pm + D4 and kept constant, thus completing this control operation. Afterwards, the step of obtaining the actual water level height of the condenser 100's drip tray can be executed, entering the next control cycle.

[0093] Figure 5 An example is a schematic diagram of the physical structure of an electronic device. For example... Figure 5As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 can call a computer program in the memory 830 to execute the steps of the condenser control method, such as including:

[0094] The operating modes of the condenser 100 are obtained, including wet operating mode and dry operating mode;

[0095] Ensure that the condenser 100 is in dry working mode and control the opening of the bypass ventilation damper to the maximum opening.

[0096] Determine that the condenser 100 is in wet operation mode, and obtain the internal ambient temperature and external ambient temperature of the condenser 100.

[0097] The internal ambient temperature and the external ambient temperature are compared. Based on the comparison results, the opening of the bypass ventilation damper is adjusted to reduce the condensing pressure of the condenser 100.

[0098] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0099] On the other hand, embodiments of this application also provide a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can perform the steps of the condenser control method provided in the above embodiments, such as including:

[0100] The operating modes of the condenser 100 are obtained, including wet operating mode and dry operating mode;

[0101] Ensure that the condenser 100 is in dry working mode and control the opening of the bypass ventilation damper to the maximum opening.

[0102] Determine that the condenser 100 is in wet operation mode, and obtain the internal ambient temperature and external ambient temperature of the condenser 100.

[0103] The internal ambient temperature and the external ambient temperature are compared. Based on the comparison results, the opening of the bypass ventilation damper is adjusted to reduce the condensing pressure of the condenser 100.

[0104] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0105] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for controlling a condenser, characterized in that, include: The operating mode of the condenser is obtained, including a wet operating mode and a dry operating mode; Determine that the condenser is in dry operation mode, and control the opening of the bypass ventilation damper to the maximum opening. Determine that the condenser is in wet operation mode, and obtain the internal ambient temperature and external ambient temperature of the condenser; The internal ambient temperature and the external ambient temperature are compared. Based on the comparison result, the opening of the bypass ventilation damper is adjusted to reduce the condensing pressure of the condenser. The condenser includes: The enclosure has an air inlet and a bypass outlet; the bypass outlet has a bypass ventilation door with an adjustable opening degree. A fan, which is connected to and communicates with the housing; The first heat exchanger is disposed inside the housing and located between the air inlet and the fan; A water distributor is disposed inside the box and is positioned facing the first heat exchanger to spray water onto the surface of the first heat exchanger. The second heat exchanger is located between the first heat exchanger and the fan, and is connected to the first heat exchanger. The bypass port is located between the first heat exchanger and the second heat exchanger.

2. The condenser control method according to claim 1, characterized in that, The step of comparing the internal ambient temperature and the external ambient temperature, and adjusting the opening of the bypass ventilation damper based on the comparison result to reduce the condensing pressure of the condenser includes: If the internal ambient temperature is determined to be lower than the external ambient temperature, the bypass ventilation door is controlled to close. If the internal ambient temperature is determined to be greater than or equal to the external ambient temperature, the opening of the bypass ventilation door is increased by a first change.

3. The condenser control method according to claim 2, characterized in that, After determining that the internal ambient temperature is greater than or equal to the external ambient temperature, and increasing the opening of the bypass ventilation door by a first change, the method further includes: Obtain the first change value of the condensing pressure of the condenser; If the first change value is determined to be greater than or equal to zero, the opening of the bypass ventilation door is reduced by a second change amount; If the first change value is determined to be less than zero, the opening of the bypass ventilation door is increased by a second change amount.

4. The condenser control method according to claim 3, characterized in that, After determining that the first change value is greater than or equal to zero, and the step of reducing the opening of the bypass ventilation door by a second change amount, the method further includes: Obtain the second change value of the condensation pressure; Once the second change value is determined to be less than zero, the opening of the bypass ventilation door is reduced by a third change amount until the second change value is greater than or equal to zero. Then, the opening of the bypass ventilation door is increased by a third change amount and remains unchanged.

5. The condenser control method according to claim 3, characterized in that, After determining that the first change value is less than zero, the step of controlling the opening of the bypass ventilation door to increase the second change amount further includes: Obtain the third change value of the condensing pressure of the condenser; Once the third change value is determined to be less than zero, the opening of the bypass ventilation door is increased by a fourth change amount until the third change value is greater than or equal to zero. Then, the opening of the bypass ventilation door is decreased by the fourth change amount and remains unchanged.

6. The condenser control method according to claim 1, characterized in that, The step of obtaining the operating mode of the condenser, which includes a wet operating mode and a dry operating mode, includes: Obtain the actual water level in the condenser's drip tray and compare it with a preset height. When the actual water level is greater than the preset height, the condenser is in wet operation mode. When the actual water level is less than or equal to the preset height, the condenser is in dry operation mode.

7. A condenser (100) for performing the control method of the condenser according to any one of claims 1 to 6, characterized in that, include: The enclosure (110) is provided with an air inlet (111) and a bypass port (112); a bypass ventilation door is provided at the bypass port (112), and the opening degree of the bypass ventilation door is adjustable; A fan (120) is connected to and communicates with the housing (110); The first heat exchanger (121) is located inside the housing (110) and between the air inlet (111) and the fan (120); A water distributor (122) is disposed inside the housing (110) and is positioned facing the first heat exchanger (121) to spray water onto the surface of the first heat exchanger (121); The second heat exchanger (123) is located between the first heat exchanger (121) and the fan (120). The second heat exchanger (123) is connected to the first heat exchanger (121). The bypass port (112) is located between the first heat exchanger (121) and the second heat exchanger (123).

8. The condenser (100) according to claim 7, characterized in that, The condenser (100) includes a controller that performs the steps of the control method for the condenser (100) according to any one of claims 1 to 6, and the controller is communicatively connected to the bypass ventilation door and the fan (120).

9. The condenser (100) according to claim 8, characterized in that, The condenser (100) also includes a first temperature sensor (124) and a second temperature sensor (125). The first temperature sensor (124) and the second temperature sensor (125) are both connected to the controller. The first temperature sensor (124) is located inside the housing (110), and the second temperature sensor (125) is located outside the housing (110).

10. The condenser (100) according to claim 9, characterized in that, The first temperature sensor (124) is located between the first heat exchanger (121) and the second heat exchanger (123).

11. An electronic device comprising a processor and a memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the control method for the condenser according to any one of claims 1 to 6.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the control method for the condenser according to any one of claims 1 to 6.

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