Control method and device of two-way valve and air conditioning equipment

Abstract

The embodiment of the invention discloses a control method and device of a two-way valve and air conditioning equipment. The control method of the two-way valve comprises the steps that the working state of a temperature sensor for air supply of the air conditioner is obtained; according to the working state of the temperature sensor, the control voltage of the two-way valve is determined; adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve; wherein the control voltage is in negative correlation with the opening degree of the two-way valve. According to the technical scheme provided by the embodiment, the problems that after a control signal of a two-way valve of an air conditioner of an existing data machine room is interrupted, the two-way valve can be shut down, and reliability is poor are solved.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning technology, and in particular to a control method, device and air conditioning equipment for a two-way valve. Background Technology

[0002] With the development of air conditioning technology, the reliability requirements for air conditioning in heat dissipation scenarios such as data centers are becoming increasingly stringent. Existing two-way valves in data center air conditioners will shut down after a control signal interruption, indicating poor reliability and failing to meet the continuous cooling needs of data centers. Summary of the Invention

[0003] This invention provides a control method, device, and air conditioning equipment for a two-way valve to solve the problem that existing data center air conditioning systems will shut down after the control signal is interrupted, resulting in poor reliability.

[0004] To address the aforementioned technical problems, the present invention adopts the following technical solution:

[0005] This invention provides a control method for a two-way valve, comprising:

[0006] Obtain the operating status of the temperature sensor for the air conditioning supply air;

[0007] The control voltage of the two-way valve is determined based on the operating status of the temperature sensor.

[0008] The opening degree of the two-way valve is adjusted according to the control voltage of the two-way valve; wherein the control voltage and the opening degree of the two-way valve are negatively correlated.

[0009] Optionally, determining the control voltage of the two-way valve based on the operating state of the temperature sensor includes:

[0010] When the temperature sensor is in the state of disconnection before power-on, the control voltage of the two-way valve is determined to be zero.

[0011] When the temperature sensor is in the working state of being disconnected after power-on, the control voltage of the two-way valve is determined to remain at the control voltage of the previous moment.

[0012] When the temperature sensor is in normal working condition, the current temperature information of the air supplied by the air conditioner is obtained through the temperature sensor; based on the difference between the current temperature information and the set temperature, the control voltage of the two-way valve is determined.

[0013] Optionally, adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes:

[0014] Based on the negative correlation between the control voltage and the opening degree of the two-way valve, the opening degree of the two-way valve is adjusted to the maximum when the control voltage of the two-way valve is zero.

[0015] Optionally, adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes:

[0016] When the control voltage of the two-way valve is the same as the control voltage at the previous moment, based on the negative correlation between the control voltage and the opening degree of the two-way valve, the opening degree of the two-way valve is adjusted to maintain the opening degree at the previous moment according to the control voltage of the two-way valve at the previous moment.

[0017] Optionally, determining the control voltage of the two-way valve based on the difference between the current temperature information and the set temperature includes:

[0018] Based on the difference between the current temperature information and the set temperature, PID calculation is performed to determine the current computing power of the two-way valve;

[0019] Based on the correspondence between the computing power and control voltage of the two-way valve, the control voltage of the two-way valve corresponding to the current computing power is determined.

[0020] Optionally, adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes:

[0021] Based on the negative correlation between the control voltage and the opening degree of the two-way valve, the opening degree of the two-way valve is adjusted according to the control voltage of the two-way valve corresponding to the current computing power.

[0022] Optionally, before obtaining the operating status of the temperature sensor for the air conditioning supply air, the method further includes:

[0023] Install the two-way valve in reverse;

[0024] The relationship between the opening degree of the two-way valve and the control voltage is configured such that when the two-way valve is fully open, the corresponding control voltage is zero volts, and when the two-way valve is fully closed, the corresponding control voltage is the maximum value; the opening degree of the two-way valve and the control voltage are negatively correlated.

[0025] Optionally, before obtaining the operating status of the temperature sensor for the air conditioning supply air, the method further includes:

[0026] Obtain the power-on status of the air conditioner;

[0027] When the air conditioner is switched off, the two-way valve is controlled to close.

[0028] When the air conditioner is in the "on" state, it is determined whether the temperature sensor for the air conditioner's air supply is disconnected, in order to determine the working status of the temperature sensor.

[0029] According to another aspect of the present invention, this embodiment provides a control device for a two-way valve, comprising:

[0030] The acquisition module is used to acquire the working status of the temperature sensor for the air conditioner's air supply.

[0031] A voltage determination module is used to determine the control voltage of the two-way valve based on the operating state of the temperature sensor.

[0032] An opening adjustment module is used to adjust the opening of the two-way valve according to the control voltage of the two-way valve; wherein the control voltage and the opening of the two-way valve are negatively correlated.

[0033] According to another aspect of the present invention, this embodiment provides an air conditioning device, including: a control device for a two-way valve provided in the second aspect, the control device for the two-way valve being used to execute the control method for the two-way valve provided in any of the first aspects.

[0034] The two-way valve control method provided in this invention obtains the operating status of the temperature sensor used to supply air to the air conditioner and determines the control voltage of the two-way valve based on the operating status of the temperature sensor. Then, the opening degree of the two-way valve is adjusted according to the control voltage. Because the control voltage and the opening degree of the two-way valve are negatively correlated, even if the temperature sensor experiences a fault such as a disconnection, and the corresponding control voltage is zero, the two-way valve can still be controlled to conduct. This ensures that even if the temperature signal detected by the temperature sensor is interrupted due to a temperature sensor failure, resulting in an interruption of the control signal, the two-way valve will still remain in a conducting state when the control voltage is zero. This configuration allows the conducting two-way valve to maintain the flow of refrigerant in the air conditioning pipeline, thereby enabling the air conditioner to maintain continuous cooling, improving the reliability of the air conditioner, and ultimately improving the heat dissipation effect of data centers and other equipment requiring high air conditioning reliability. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0036] Figure 1 This is a flowchart of a control method for a two-way valve provided in an embodiment of the present invention;

[0037] Figure 2This is a flowchart of another control method for a two-way valve provided in an embodiment of the present invention;

[0038] Figure 3 This is a flowchart of another control method for a two-way valve provided in an embodiment of the present invention;

[0039] Figure 4 This is a graph showing the relationship between the control voltage and the opening degree of a two-way valve provided in an embodiment of the present invention.

[0040] Figure 5 This is a graph showing the relationship between the calculation capability and control voltage of a two-way valve provided in an embodiment of the present invention. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises 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] Based on the above-mentioned technical problems, this embodiment proposes the following solutions:

[0044] Figure 1 This is a flowchart illustrating a control method for a two-way valve according to an embodiment of the present invention. See also... Figure 1 The control method for a two-way valve provided in this embodiment of the invention includes:

[0045] S101. Obtain the operating status of the temperature sensor for the air conditioning supply.

[0046] Specifically, air conditioning supplies air to regulate temperature. A temperature sensor for the air conditioning supply air is used to detect the temperature of the supplied air. The operating status of the temperature sensor includes normal operation and abnormal disconnection.

[0047] S102. Determine the control voltage of the two-way valve based on the operating status of the temperature sensor.

[0048] Specifically, when the temperature sensor is operating normally, the control voltage of the two-way valve is determined based on the air conditioning supply temperature detected by the sensor. When the temperature sensor is malfunctioning, such as due to a broken wire, the control voltage of the two-way valve is set to zero based on the abnormal condition of the temperature sensor.

[0049] S103. Adjust the opening degree of the two-way valve according to the control voltage of the two-way valve; wherein the control voltage and the opening degree of the two-way valve are negatively correlated.

[0050] Specifically, the control voltage and the opening degree of the two-way valve are negatively correlated. The higher the control voltage, the smaller the opening degree of the two-way valve. The lower the control voltage, the larger the opening degree of the two-way valve. When the control voltage is zero, the opening degree of the two-way valve reaches its maximum, i.e., 100%.

[0051] The two-way valve control method provided in this embodiment obtains the operating status of the temperature sensor for the air conditioning supply and determines the control voltage of the two-way valve based on the operating status of the temperature sensor. Then, the opening degree of the two-way valve is adjusted according to the control voltage. Since the control voltage and the opening degree of the two-way valve are negatively correlated, even if the temperature sensor experiences a fault such as a disconnection, and the corresponding control voltage is zero, the two-way valve can still be controlled to conduct. This ensures that even if the temperature signal detected by the temperature sensor is interrupted due to a temperature sensor failure, resulting in an interruption of the control signal, the two-way valve will still remain in a conducting state when the control voltage is zero. This setting allows the conducting two-way valve to keep the refrigerant flowing in the air conditioning pipeline, thereby enabling the air conditioner to maintain continuous cooling, improving the reliability of the air conditioner, and thus improving the heat dissipation effect of data centers and other equipment with high requirements for air conditioning reliability.

[0052] Optional, Figure 2 This is a flowchart of another control method for a two-way valve provided in an embodiment of the present invention. See also... Figure 2 Based on the above embodiments, the control method for a two-way valve provided in this embodiment of the invention includes:

[0053] S101. Obtain the operating status of the temperature sensor for the air conditioning supply.

[0054] S201. When the temperature sensor is in the state of disconnection before power-on, the control voltage of the two-way valve is determined to be zero.

[0055] Specifically, if the temperature sensor is disconnected before the air conditioner is turned on, the control voltage of the two-way valve is set to zero. Since the control voltage of the two-way valve is zero, it will fully open. With the two-way valve fully open, the refrigerant flow in the air conditioning system is maximized, enabling the air conditioner to achieve effective cooling or heating.

[0056] S202. When the temperature sensor is in the working state of being disconnected after power-on, the control voltage of the two-way valve is determined to remain at the control voltage of the previous moment.

[0057] Specifically, when the temperature sensor's operating state is "disconnected after power-on," for example, the temperature sensor initially operates normally but experiences a disconnection after a period of operation, the control voltage of the two-way valve is set to remain at the previous control voltage when the temperature sensor's operating state is "disconnected after power-on." This setting ensures that the opening degree of the two-way valve remains at the previous opening degree, thereby ensuring that the air conditioner's airflow maintains the air volume at the moment before the temperature sensor disconnection. This ensures that even when the temperature sensor experiences a disconnection after power-on, the air conditioner's airflow can effectively meet the cooling needs of the data center's waiting cooling equipment.

[0058] S203. When the temperature sensor is in normal working condition, the current temperature information of the air conditioner's air supply is obtained through the temperature sensor; the control voltage of the two-way valve is determined based on the difference between the current temperature information and the set temperature.

[0059] Specifically, when the temperature sensor is operating normally, the control voltage of the two-way valve is determined based on the difference between the current temperature and the set temperature. For example, if the difference between the current temperature and the set temperature is large, the magnitude of the control voltage of the two-way valve can be determined based on the sign of the difference.

[0060] Optionally, based on the above embodiments, adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes: based on the negative correlation between the control voltage and the opening degree of the two-way valve, adjusting the opening degree of the two-way valve to the maximum when the control voltage of the two-way valve is zero.

[0061] Specifically, this setting ensures that the two-way valve opens to its maximum extent when the control voltage is zero. This prevents the temperature sensor from outputting current temperature information and generating the corresponding control signal in the event of a malfunction such as a broken wire. In other words, even when the corresponding control voltage is zero, the two-way valve can still be kept in the conducting state. This improves the air conditioner's ability to continue cooling even when the temperature sensor experiences a broken wire, thus enhancing the reliability of the air conditioner's cooling.

[0062] Optional, Figure 3This is a flowchart of another control method for a two-way valve provided in an embodiment of the present invention. Figure 4 This is a graph showing the relationship between the control voltage and the actual opening degree of a two-way valve according to an embodiment of the present invention. Based on the above embodiment, and combined with... Figure 3 and Figure 4 The step of adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes:

[0063] When the control voltage of the two-way valve is the same as the control voltage at the previous moment, based on the negative correlation between the control voltage and the opening degree of the two-way valve, the opening degree of the two-way valve is adjusted to maintain the opening degree at the previous moment according to the control voltage of the two-way valve at the previous moment.

[0064] Specifically, when the temperature sensor's operating state is "power-on disconnected," the control voltage of the two-way valve is maintained at the control voltage from the previous moment. See also... Figure 4 Based on the control voltage of the two-way valve at the previous moment, the opening degree of the two-way valve is determined by querying the negative correlation curve between the control voltage and the opening degree of the two-way valve, and the opening degree of the previous moment is maintained.

[0065] Optional, Figure 5 This is a graph showing the relationship between the calculation capability and control voltage of a two-way valve according to an embodiment of the present invention. Based on the above embodiment, and combined with... Figures 3 to 5 The step of determining the control voltage of the two-way valve based on the difference between the current temperature information and the set temperature includes:

[0066] Based on the difference between the current temperature information and the set temperature, PID calculation is performed to determine the current computing power of the two-way valve; based on the correspondence between the computing power of the two-way valve and the control voltage, the control voltage of the two-way valve corresponding to the current computing power is determined.

[0067] Specifically, this setting makes it easier to determine the accurate control voltage of the two-way valve based on the set temperature and current temperature information, thereby improving the control accuracy of the two-way valve and thus improving the reliability of the air conditioner.

[0068] Optionally, based on the above embodiments, see also... Figure 4 and Figure 5 The step of adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes:

[0069] Based on the negative correlation between the control voltage and the opening degree of the two-way valve, the opening degree of the two-way valve is adjusted according to the control voltage of the two-way valve corresponding to the current computing power.

[0070] Specifically, the stronger the calculation capability of a two-way valve, the lower the control voltage. The control voltage is at its maximum value (e.g., 10V) when the calculation capability of the two-way valve is zero. The control voltage is zero when the calculation capability of the two-way valve is 100%. By setting the difference between the current temperature information and the set temperature, PID calculations are performed to determine the current calculation capability of the two-way valve. Then, by querying the curve showing the correspondence between the calculation capability and control voltage of the two-way valve, the corresponding control voltage for the two-way valve is determined.

[0071] Optionally, before obtaining the operating status of the temperature sensor for the air conditioning supply air, the method further includes:

[0072] Install the two-way valve in reverse. Configure the relationship between the opening degree of the two-way valve and the control voltage as follows: when the two-way valve is fully open, the corresponding control voltage is zero volts; when the two-way valve is fully closed, the corresponding control voltage is the maximum value. The opening degree of the two-way valve and the control voltage are negatively correlated.

[0073] Specifically, by reversing the installation of the two-way valve, and configuring the reverse-installed two-way valve such that when it is fully open, the corresponding control voltage is zero volts, and when it is fully closed, the corresponding control voltage is at its maximum value; the opening degree of the two-way valve and the control voltage are negatively correlated. This configuration allows the temperature sensor to accurately adjust the opening degree of the two-way valve based on the current temperature information collected by the sensor and the set temperature when the temperature sensor is working normally, improving the accuracy of the air conditioner's temperature regulation. When the temperature sensor malfunctions, such as a disconnection, it cannot collect the current temperature information. When the temperature sensor disconnects before the air conditioner is turned on, the control voltage is zero, and the two-way valve is adjusted to be fully open based on the control voltage. When the temperature sensor disconnects after the air conditioner is turned on, the control voltage remains at the previous value, and the opening degree of the two-way valve remains at the previous value. This configuration effectively improves the reliability of the air conditioner's cooling.

[0074] Optionally, based on the above embodiments, before obtaining the operating status of the air conditioner's air supply temperature sensor, the method further includes: obtaining the air conditioner's on / off status. When the air conditioner's on / off status is "off", the two-way valve is controlled to close. When the air conditioner's on / off status is "on", it is determined whether the air conditioner's air supply temperature sensor is disconnected, thereby determining the operating status of the temperature sensor.

[0075] Specifically, this configuration allows the air conditioner to save energy. Furthermore, it ensures that the air conditioning's cooling is unaffected by a disconnection in the temperature sensor, effectively improving the reliability of the temperature sensor's cooling performance and meeting the high reliability requirements of equipment such as data centers.

[0076] An alternative implementation method, based on the above embodiments, continues to refer to... Figure 3The control method for a two-way valve provided in this embodiment of the invention includes:

[0077] S301. Determine if the air conditioner is turned on. If yes, proceed to S302; otherwise, proceed to S306.

[0078] S302. Determine whether the temperature sensor is disconnected before the air conditioner is turned on. If yes, proceed to S307; otherwise, proceed to S303.

[0079] S303. Determine whether the temperature sensor is disconnected after the air conditioner is turned on. If yes, proceed to S305; otherwise, proceed to S304.

[0080] S304. Compare the set temperature with the current temperature information to perform PID calculation.

[0081] S305. Maintain current computing power.

[0082] S306, Two-way valve opening degree 0%.

[0083] S307, two-way valve opening degree 100%.

[0084] S308, the correspondence between the calculation capability of the two-way valve and the control voltage, and the determination of the control voltage.

[0085] S309. Adjust the opening degree based on the correspondence between the control voltage and the opening degree of the two-way valve.

[0086] Based on the same inventive concept, this embodiment provides a control device for a two-way valve, comprising:

[0087] The acquisition module is used to acquire the working status of the temperature sensor for the air conditioner's air supply.

[0088] A voltage determination module is used to determine the control voltage of the two-way valve based on the operating state of the temperature sensor.

[0089] An opening adjustment module is used to adjust the opening of the two-way valve according to the control voltage of the two-way valve; wherein the control voltage and the opening of the two-way valve are negatively correlated.

[0090] The two-way valve control device provided in this embodiment acquires the operating status of the temperature sensor of the air conditioner's air supply through an acquisition module. A voltage determination module then determines the control voltage of the two-way valve based on the operating status of the temperature sensor. Finally, an opening adjustment module adjusts the opening of the two-way valve according to the control voltage. Because the control voltage and the opening of the two-way valve are negatively correlated, even if the temperature sensor experiences a fault such as a disconnection (resulting in a zero control voltage), the two-way valve can still be controlled to conduct. This ensures that even if the temperature signal detected by the temperature sensor is interrupted due to a temperature sensor failure, causing a control signal interruption, the two-way valve will still remain open even when the control voltage is zero. The two-way valve control device provided in this embodiment ensures that the open two-way valve keeps the refrigerant flowing in the air conditioning pipeline, allowing the air conditioner to maintain continuous cooling, thereby improving the reliability of the air conditioner and ultimately improving the heat dissipation effect of data centers and other equipment requiring high air conditioning reliability.

[0091] Based on the same inventive concept, this embodiment provides an air conditioning device, including: a control device for a two-way valve provided in any of the above embodiments. The control device for the two-way valve is used to execute the control method for the two-way valve provided in any of the above embodiments, and has the beneficial effects of the control method for the two-way valve provided in any of the above embodiments, which will not be described in detail here.

[0092] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A control method for a two-way valve, characterized in that, include: Obtain the operating status of the temperature sensor for the air conditioning supply air; The control voltage of the two-way valve is determined based on the operating status of the temperature sensor. The opening degree of the two-way valve is adjusted according to the control voltage of the two-way valve; wherein the control voltage and the opening degree of the two-way valve are negatively correlated.

2. The method according to claim 1, characterized in that, Determining the control voltage of the two-way valve based on the operating state of the temperature sensor includes: When the temperature sensor is in the state of disconnection before power-on, the control voltage of the two-way valve is determined to be zero. When the temperature sensor is in the working state of being disconnected after power-on, the control voltage of the two-way valve is determined to remain at the control voltage of the previous moment. When the temperature sensor is in normal working condition, the current temperature information of the air supplied by the air conditioner is obtained through the temperature sensor; based on the difference between the current temperature information and the set temperature, the control voltage of the two-way valve is determined.

3. The method according to claim 2, characterized in that, The step of adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes: Based on the negative correlation between the control voltage and the opening degree of the two-way valve, the opening degree of the two-way valve is adjusted to the maximum when the control voltage of the two-way valve is zero.

4. The method according to claim 2, characterized in that, The step of adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes: When the control voltage of the two-way valve is the same as the control voltage at the previous moment, based on the negative correlation between the control voltage and the opening degree of the two-way valve, the opening degree of the two-way valve is adjusted to maintain the opening degree at the previous moment according to the control voltage of the two-way valve at the previous moment.

5. The method according to claim 2, characterized in that, The step of determining the control voltage of the two-way valve based on the difference between the current temperature information and the set temperature includes: Based on the difference between the current temperature information and the set temperature, PID calculation is performed to determine the current computing power of the two-way valve; Based on the correspondence between the computing power and control voltage of the two-way valve, the control voltage of the two-way valve corresponding to the current computing power is determined.

6. The method according to claim 5, characterized in that, The step of adjusting the opening degree of the two-way valve according to the control voltage of the two-way valve includes: Based on the negative correlation between the control voltage and the opening degree of the two-way valve, the opening degree of the two-way valve is adjusted according to the control voltage of the two-way valve corresponding to the current computing power.

7. The method according to claim 1, characterized in that, Before obtaining the operating status of the temperature sensor for the air conditioning supply, the following is also included: Install the two-way valve in reverse; The relationship between the opening degree of the two-way valve and the control voltage is configured such that when the two-way valve is fully open, the corresponding control voltage is zero volts, and when the two-way valve is fully closed, the corresponding control voltage is the maximum value; the opening degree of the two-way valve and the control voltage are negatively correlated.

8. The method according to claim 1, characterized in that, Before obtaining the operating status of the temperature sensor for the air conditioning supply, the following is also included: Obtain the power-on status of the air conditioner; When the air conditioner is switched off, the two-way valve is controlled to close. When the air conditioner is in the "on" state, it is determined whether the temperature sensor for the air conditioner's air supply is disconnected, in order to determine the working status of the temperature sensor.

9. A control device for a two-way valve, characterized in that, include: The acquisition module is used to acquire the working status of the temperature sensor for the air conditioner's air supply. A voltage determination module is used to determine the control voltage of the two-way valve based on the operating state of the temperature sensor. An opening adjustment module is used to adjust the opening of the two-way valve according to the control voltage of the two-way valve; wherein the control voltage and the opening of the two-way valve are negatively correlated.

10. An air conditioning device, characterized in that, include: The control device for the two-way valve according to claim 9, wherein the control device for the two-way valve is used to execute the control method for the two-way valve according to any one of claims 1 to 8.

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