Temperature control method, device, system and computer equipment

Abstract

This invention relates to a temperature control method, apparatus, system, and computer equipment, comprising the steps of: acquiring the actual temperature of a heat exchanger; the heat exchanger being used for thermal coupling with a target medium; determining whether the actual temperature and a first set temperature of the heat exchanger satisfy a first relationship; when the actual temperature and the first set temperature satisfy the first relationship, determining whether a second set temperature of the cooling medium supplied to the heat exchanger by a cooling device satisfies a second relationship with an optimal set temperature; when the second set temperature and the optimal set temperature satisfy the second relationship, adjusting the second set temperature so that the actual temperature is within the fluctuation range above and below the first set temperature; wherein, the optimal set temperature corresponds one-to-one with the first set temperature, and the optimal set temperature is the set temperature of the cooling medium when the cooling medium and the target medium have maximum heat exchange.

Description

Technical Field

[0001] This invention relates to the field of temperature control technology, and in particular to a temperature control method, device, system and computer equipment. Background Technology

[0002] Before leaving the factory, chips need to undergo performance testing using testing equipment. Generally, during chip testing, temperature control is used to regulate the temperature. For example, when controlling the chip to a low temperature, the chip is placed on a heat exchanger of the temperature control system. The cooling medium provided by the cooling device enters the heat exchanger and thermally couples with the chip to control its temperature.

[0003] However, in traditional technology, to maintain the chip at a preset temperature, when the actual temperature of the heat exchanger surface is detected to be higher than the set temperature by a certain range, the temperature of the cooling medium supplied to the heat exchanger by the cooling device is reduced; conversely, when the actual temperature is lower than the set temperature by a certain range, the temperature of the cooling medium supplied to the heat exchanger is increased. However, the heat exchange between the cooling medium and the heat exchanger, or between the cooling medium and the chip, does not necessarily increase or decrease gradually with the rise or fall of the cooling medium temperature. In other words, lowering the actual temperature by reducing the temperature of the cooling medium supplied to the heat exchanger, or raising the actual temperature by increasing the temperature of the cooling medium supplied to the heat exchanger, cannot always be achieved, resulting in unstable temperature control. Summary of the Invention

[0004] Therefore, it is necessary to provide a stable temperature control method, device, system, and computer equipment to address the problem of unstable temperature control in traditional technologies.

[0005] A temperature control method includes the following steps:

[0006] The actual temperature of the heat exchanger is obtained; the heat exchanger is used for thermal coupling with the target medium.

[0007] Determine whether the actual temperature and the first set temperature of the heat exchanger satisfy a first relationship;

[0008] When the actual temperature and the first set temperature satisfy the first relationship, it is determined whether the second set temperature of the cooling medium supplied by the cooling device to the heat exchanger and the optimal set temperature satisfy the second relationship.

[0009] When the second set temperature and the optimal set temperature satisfy the second relationship, the second set temperature is adjusted so that the actual temperature is within the fluctuation range of the first set temperature.

[0010] The optimal set temperature corresponds one-to-one with the first set temperature. The optimal set temperature is the set temperature of the cooling medium when the cooling medium and the target medium have the maximum heat exchange.

[0011] In one embodiment, after the step of adjusting the second set temperature when the second set temperature and the optimal set temperature satisfy the second relationship, the method further includes:

[0012] After a first preset time interval, return and re-execute the aforementioned steps until the actual temperature falls within the fluctuation range of the first set temperature.

[0013] In one embodiment, the first relationship is: the absolute value of the difference between the actual temperature and the first set temperature is greater than a first threshold.

[0014] The second relationship is: the absolute value of the difference between the second set temperature and the optimal set temperature is greater than the second threshold.

[0015] In one embodiment, when the difference between the actual temperature and the first set temperature is greater than the first threshold;

[0016] When the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the temperature is reduced by a first amount based on the second set temperature; when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the temperature is increased by the first amount based on the second set temperature.

[0017] and / or

[0018] When the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold;

[0019] When the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the first increment is increased based on the second set temperature; when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the first increment is decreased based on the second set temperature.

[0020] In one embodiment, when the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the limit value for decreasing the second set temperature is the sum of the optimal set temperature and the second threshold; when the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the limit value for increasing the second set temperature is the difference between the optimal set temperature and the second threshold; and / or

[0021] When the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold, and when the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the limit value after increasing the second set temperature is the difference between the first set temperature and the minimum heat exchange temperature difference; when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold, and when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the limit value after decreasing the second set temperature is the lowest set temperature allowed to be set by the cooling medium or the dew point temperature of the heat exchanger; the minimum heat exchange temperature difference is the minimum temperature difference between the cooling medium and the target medium that allows heat exchange.

[0022] In one embodiment, the first relationship is: the absolute value of the difference between the actual temperature and the first set temperature is greater than a first threshold.

[0023] The second relationship is: the absolute value of the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold; the first difference is the difference between the first set temperature and the second set temperature, and the optimal heat exchange temperature difference is the difference between the first set temperature and the second set temperature when the target medium and the cooling medium have the maximum heat exchange capacity.

[0024] In one embodiment, when the difference between the actual temperature and the first set temperature is greater than the first threshold;

[0025] When the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the second magnitude is reduced based on the second set temperature; when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the second magnitude is increased based on the second set temperature.

[0026] and / or

[0027] When the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold;

[0028] When the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the second magnitude is increased based on the second set temperature; when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the second magnitude is decreased based on the second set temperature.

[0029] In one embodiment, when the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the limit for decreasing the first difference is the optimal heat exchange temperature difference minus the third threshold. When the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the limit for increasing the first difference is the optimal heat exchange temperature difference plus the third threshold; and / or

[0030] When the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the limit for increasing the second set temperature is the difference between the first set temperature and the minimum heat exchange temperature difference; when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the limit for decreasing the second set temperature is the lowest set temperature allowed by the cooling medium or the dew point temperature of the heat exchanger; the minimum heat exchange temperature difference is the minimum temperature difference between the heat exchanger and the cooling medium that allows heat exchange.

[0031] In one embodiment, when the actual temperature does not satisfy the first relationship with the first set temperature, the second set temperature is kept unchanged, and the process returns to re-evaluate whether the actual temperature and the first set temperature satisfy the first relationship.

[0032] A temperature control device, comprising:

[0033] Temperature acquisition module, used to acquire the actual temperature of the heat exchanger;

[0034] The first judgment module is used to determine whether the actual temperature and the first set temperature of the heat exchanger satisfy a first relationship;

[0035] The second judgment module is used to determine whether the second set temperature of the cooling medium supplied by the cooling device to the heat exchanger satisfies the second relationship with the optimal set temperature.

[0036] A temperature adjustment module is used to adjust the second set temperature when the second set temperature and the optimal set temperature satisfy the second relationship, so that the actual temperature is within the fluctuation range of the first set temperature.

[0037] The heat exchanger is used for thermal coupling with the target medium. The optimal set temperature corresponds one-to-one with the first set temperature. The optimal set temperature is the set temperature of the cooling medium when the cooling medium and the target medium have the maximum heat exchange capacity.

[0038] A temperature control system includes a temperature sensor, a cooling device, a heat exchanger, and a control mechanism. The cooling device is capable of providing a cooling medium to the heat exchanger. The temperature sensor is thermally coupled to the heat exchanger. Both the temperature sensor and the cooling device are electrically connected to the control mechanism.

[0039] The control mechanism is used to obtain the actual temperature of the heat exchanger based on the temperature sensor, and determine whether the actual temperature and the first set temperature of the heat exchanger satisfy a first relationship. When the actual temperature and the first set temperature satisfy the first relationship, it determines whether the second set temperature of the cooling medium supplied to the heat exchanger by the cooling device satisfies a second relationship with the optimal set temperature. When the second set temperature and the optimal set temperature satisfy the second relationship, it adjusts the second set temperature so that the actual temperature is within the fluctuation range of the first set temperature.

[0040] The heat exchanger is used for thermal coupling with the target medium. The optimal set temperature corresponds one-to-one with the first set temperature. The optimal set temperature is the set temperature of the cooling medium when the cooling medium and the target medium have the maximum heat exchange.

[0041] A computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the temperature control method described above.

[0042] The aforementioned temperature control method, device, system, and computer equipment, when the actual temperature and the first set temperature satisfy a first relationship, determine whether the second set temperature and the optimal set temperature satisfy a second relationship. When the second set temperature and the optimal set temperature satisfy the second relationship, the second set temperature is adjusted to ensure that the actual temperature is within the fluctuation range of the first set temperature, thereby achieving low-temperature control of the target medium. That is, when adjusting the second set temperature, the optimal set temperature is used as a reference standard. The actual temperature is kept within the fluctuation range of the first set temperature by changing the heat exchange between the target medium and the cooling medium, rather than simply increasing or decreasing the temperature of the cooling medium based on the relationship between the actual temperature and the set temperature, as in existing technologies, to achieve stable temperature control. Attached Figure Description

[0043] Figure 1 A flowchart illustrating a temperature control method provided in an embodiment of this application;

[0044] Figure 2 A graph showing the relationship between Qr and Qc and the set temperature of the cooling medium;

[0045] Figure 3 A flowchart of a temperature control method provided in another embodiment of this application;

[0046] Figure 4 A flowchart illustrating a temperature control method provided in yet another embodiment of this application;

[0047] Figure 5 A schematic diagram of a temperature control system provided in an embodiment of this application. Detailed Implementation

[0048] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] See Figure 1One embodiment of this application provides a temperature control method, including the following steps:

[0051] S110: Obtain the actual temperature of heat exchanger 100;

[0052] Heat exchanger 100 is used for thermal coupling with the target medium. Specifically, the target medium is in direct contact with heat exchanger 100 for thermal coupling, that is, heat conduction occurs between the target medium and heat exchanger 100 through direct contact, thereby controlling the temperature of the target medium. In some embodiments, the target medium is a chip. Of course, in other embodiments, the type of target medium and its thermal coupling method with heat exchanger 100 are not limited.

[0053] The above-mentioned actual temperature is the actual measured temperature of the surface of the heat exchanger 100. Generally, the actual temperature is obtained by collecting the temperature of the heat exchange surface where the heat exchanger 100 is thermally coupled with the target medium.

[0054] S120: Determine whether the actual temperature and the first set temperature of the heat exchanger 100 satisfy the first relationship;

[0055] The first set temperature is a temperature set manually. Specifically, when the actual temperature obtained is the temperature of the heat exchange surface of the heat exchanger 100, then the first set temperature is the set temperature of the heat exchange surface of the heat exchanger 100. The first set temperature is selected according to the operating conditions, that is, the specific temperature value of the first set temperature varies with different operating conditions.

[0056] S130: When the actual temperature and the first set temperature satisfy the first relationship, determine whether the second set temperature of the cooling medium supplied by the cooling device 200 to the heat exchanger 100 satisfies the second relationship with the optimal set temperature;

[0057] The cooling device 200 provides a cooling medium to the heat exchanger 100, and the cooling medium is thermally coupled to the target medium through the heat exchanger 100. That is, when the cooling device 200 supplies the cooling medium to the heat exchanger 100, the cooling medium is thermally coupled to the heat exchanger 100, and the target medium is thermally coupled to the heat exchanger 100, thus achieving thermal coupling between the cooling medium and the target medium. By controlling the temperature of the cooling medium supplied to the heat exchanger 100 by the cooling device 200, the temperature of the heat exchanger 100 is controlled, thereby controlling the temperature of the target medium.

[0058] The second set temperature is a temperature set manually. The second set temperature is selected according to the working conditions. That is, the specific temperature value of the second set temperature varies depending on the working conditions.

[0059] The optimal setting temperature corresponds one-to-one with the first setting temperature. The optimal setting temperature is the setting temperature of the cooling medium when the cooling medium and the target medium have the maximum heat exchange capacity. When the target temperature of the heat exchanger 100 is set to a certain first setting temperature according to the actual operating conditions, the cooling medium supplied to the heat exchanger 100 will have an optimal setting temperature corresponding to the first setting temperature. At this optimal setting temperature, the heat exchange effect between the cooling medium and the target medium in the heat exchanger 100 is the best. That is, each first setting temperature of the heat exchanger 100 corresponds to an optimal setting temperature of the cooling medium.

[0060] See Figure 2 Let Qr be the theoretical heat exchange between the target medium and the outside world (including the heat exchange between the target medium and the surrounding environment, and the heat exchange between the target medium and the heat exchanger 100), and Qc be the theoretical cooling capacity of the cooling device 200. Qr increases with the set temperature of the cooling medium, while Qc decreases with the set temperature of the cooling medium. In a coordinate system with the set temperature of the cooling medium as the x-axis and Qc as the y-axis, Qr and Qc intersect at a point. Since the actual heat exchange between the cooling medium and the target medium is the smaller of Qc and Qr, the set temperature corresponding to this intersection point is the set temperature at which the cooling medium and the target medium have the maximum heat exchange, thus forming the aforementioned optimal set temperature.

[0061] Specifically, the optimal setting temperature corresponding to each first setting temperature can be obtained through experimentation, or by measuring the setting temperatures corresponding to some first setting temperatures and then performing a linear or fitting curve between the first setting temperature and the optimal setting temperature to obtain the optimal setting temperature corresponding to other first setting temperatures. This is not limited here.

[0062] S140: When the second set temperature and the optimal set temperature satisfy the second relationship, adjust the second set temperature so that the actual temperature is within the fluctuation range of the first set temperature.

[0063] It should be noted that the first and second relationships can be set as needed and are not limited here. For example, the first relationship can be the magnitude relationship between the actual temperature and the first set temperature, or a linear relationship between the actual temperature and the first set temperature, etc. The second relationship can be the magnitude relationship between the second set temperature and the optimal set temperature, or a linear relationship between the second set temperature and the optimal set temperature.

[0064] The temperature control method provided in this application, when the actual temperature and the first set temperature satisfy a first relationship, determines whether the second set temperature and the optimal set temperature satisfy a second relationship. When the second set temperature and the optimal set temperature satisfy the second relationship, the second set temperature is adjusted so that the actual temperature is within the fluctuation range of the first set temperature, thereby achieving low-temperature control of the target medium. That is, when adjusting the second set temperature, the optimal set temperature is used as a reference standard. The actual temperature is kept within the fluctuation range of the first set temperature by changing the heat exchange between the target medium and the cooling medium, rather than simply increasing or decreasing the temperature of the cooling medium based on the relationship between the actual temperature and the set temperature, as in the prior art, thus achieving stable temperature control.

[0065] It should be noted that when the actual temperature does not satisfy the first relationship with the first set temperature, it means that the actual temperature is already within the fluctuation range of the first set temperature. In this case, the second set temperature will not be adjusted, meaning the cooling medium will maintain its current second set temperature, and the system will return to reassess whether the actual temperature and the first set temperature satisfy the first relationship. Alternatively, when the actual temperature and the first set temperature satisfy the first relationship, but the second set temperature does not satisfy the second relationship with the optimal set temperature, the second set temperature will not be adjusted. In the latter case, the actual temperature and the first set temperature still satisfy the first relationship, meaning the actual temperature deviates from the fluctuation range of the first set temperature, while the second set temperature is within the fluctuation range of the optimal set temperature. This indicates that adjusting the second set temperature to fall within the fluctuation range of the optimal set temperature will not bring the actual temperature within the fluctuation range of the first set temperature. This may be due to external factors such as leakage of the cooling medium within the cooling device 200, requiring manual intervention to resolve the potential hazard and then reassessing and / or adjusting the first and second set temperatures.

[0066] Further reading Figure 3 Step S140 is followed by the following steps:

[0067] After a first preset time interval, return and re-execute the aforementioned steps until the actual temperature falls within the fluctuation range of the first preset temperature.

[0068] Specifically, when the actual temperature does not satisfy the first relationship with the first set temperature, or when the actual temperature satisfies the first relationship with the first set temperature but the second set temperature does not satisfy the second relationship with the optimal set temperature, the above steps are repeated after a second preset time interval until the actual temperature falls within the fluctuation range of the first set temperature. The first preset time interval and the second preset time interval are selected according to the operating conditions.

[0069] The above settings ensure that the actual temperature of the heat exchanger 100 is within the range of fluctuation of the first set temperature, thereby stabilizing the control of the target medium and ensuring that the target medium is maintained at the preset temperature.

[0070] In some embodiments, see further reference. Figure 3 The first relation is: >Δ ,in, Represents the actual temperature. Represents the first set temperature, Δ This represents the first threshold. That is, the first relationship is: the absolute value of the difference between the actual temperature and the first set temperature is greater than the first threshold.

[0071] The second relationship is: >Δ ,in, The second set temperature represents time n. Δ represents the optimal set temperature corresponding to the first set temperature. This represents the second threshold. That is, the second relationship is: the absolute value of the difference between the second set temperature and the optimal set temperature is greater than the second threshold.

[0072] It should be noted that the first and second thresholds mentioned above are set according to the actual working conditions, and are not limited here.

[0073] when >Δ ,and +Δ hour, = -A. Where A represents the first amplitude.

[0074] That is, when the difference between the actual temperature and the first set temperature is greater than a first threshold, and when the difference between the second set temperature and the optimal set temperature is greater than a second threshold, the temperature is reduced by a first amount based on the second set temperature. Specifically, the limit value after reducing the second set temperature is... +Δ That is, when the difference between the actual temperature and the first set temperature is greater than the first threshold; and when the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the limit value after reducing the second set temperature is... +Δ .

[0075] The above settings, when >Δ At that time, proof If the temperature is too high, it will not meet the requirements. In this case, it is necessary to increase the heat exchange between the target medium and the cooling medium. When the cooling medium is at... When the heat exchange between the target medium and the cooling medium is at its maximum, and when... +Δ hour, = -A makes the second set temperature at time n+1 closer to the second set temperature at time n. This increases the heat exchange between the target medium and the cooling medium. Reduced, shrunken and The difference makes Closer This achieved the goal of temperature control.

[0076] It should also be noted that the first threshold, the second threshold, and the first amplitude can be selected according to the working conditions, and are not limited here.

[0077] when >Δ ,and < -Δ hour, = +A. That is, when the difference between the actual temperature and the first set temperature is greater than a first threshold; and when the difference between the second set temperature and the optimal set temperature is less than a negative value of the second threshold, the second set temperature is increased by a first increment. Specifically, the limit value after increasing the second set temperature is... -Δ That is, when the difference between the actual temperature and the first set temperature is greater than the first threshold; and when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the limit value after increasing the second set temperature is... -Δ .

[0078] The above settings, when >Δ At that time, proof If the temperature is too high, it will not meet the requirements. In this case, it is necessary to increase the heat exchange between the target medium and the cooling medium. When the cooling medium is at... When the heat exchange between the target medium and the cooling medium is at its maximum, and when... <-Δ hour, = +A makes the second set temperature at time n+1 closer to the second set temperature at time n. This increases the heat exchange between the target medium and the cooling medium. Reduced, shrunken and The difference makes Closer This achieves the purpose of temperature control.

[0079] Furthermore, when <-Δ ,and +Δ hour, = +A. That is, when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; and when the difference between the second set temperature and the optimal set temperature is greater than the second threshold, a second increment is added to the second set temperature. Specifically, the limit value after reducing the second set temperature is... -Δ That is, when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; and when the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the limit value after reducing the second set temperature is... -Δ Among them, Δ This represents the minimum heat exchange temperature difference, which is the minimum temperature difference between the cooling medium and the target medium that allows for heat exchange.

[0080] The above settings, when <-Δ At that time, proof If the temperature is too low, it does not meet the requirements, and the heat exchange between the target medium and the cooling medium needs to be reduced. When the cooling medium is at... When the heat exchange between the target medium and the cooling medium is at its maximum, and when... +Δ hour, = +A, making the second set temperature at time n+1 further away from the second set temperature at time n. This reduces the heat exchange between the target medium and the cooling medium. Increased, decreased and The difference makes Closer This achieved the goal of temperature control.

[0081] when <-Δ ,and -Δ hour, = -A. That is, when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; and when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the second set temperature is reduced by a second amount. Specifically, the limit value after the second set temperature is reduced is the lowest set temperature allowed to be set by the cooling medium or the dew point temperature of the heat exchanger 100. That is, when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; and when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the limit value after the second set temperature is reduced is the lowest set temperature allowed to be set by the cooling medium or its dew point temperature.

[0082] The above settings, when <-Δ At that time, proof If the temperature is too low, it does not meet the requirements, and the heat exchange between the target medium and the cooling medium needs to be reduced. When the cooling medium is at... When the heat exchange between the target medium and the cooling medium is at its maximum, and when... -Δ hour, = -A causes the second set temperature at time n+1 to be further away from the second set temperature at time n. This reduces the heat exchange between the target medium and the cooling medium. Increased, decreased and The difference makes Closer This achieved the goal of temperature control.

[0083] In another embodiment, see Figure 4 The first relation is: >Δ The second relationship is: >Δ That is, the second relationship is: the first set temperature minus the second set temperature forms the first difference, and the absolute value of the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold. Wherein, Represents the optimal heat exchange temperature difference, Δ Representing the third threshold, the optimal heat exchange temperature difference is the difference between the first set temperature and the second set temperature when the target medium and the cooling medium have the maximum heat exchange capacity.

[0084] when >Δ ,and -Δ hour, = -B. Here, B represents the second amplitude. That is, when the difference between the actual temperature and the first set temperature is greater than the first threshold, and the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the second amplitude is reduced based on the second set temperature. Specifically, the limit for reducing the first difference is... -Δ That is, when the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the limit for reducing the first difference is the optimal heat exchange temperature difference minus the third threshold.

[0085] The above settings, when >Δ At that time, proof If the temperature is too high, it will not meet the requirements. In this case, it is necessary to increase the heat exchange between the target medium and the cooling medium. When the optimal heat exchange temperature difference is... When the heat exchange between the target medium and the cooling medium is at its maximum, and when... -Δ hour, = -B makes the second set temperature at time n+1 closer to the second set temperature at time n. This increases the heat exchange between the target medium and the cooling medium. Reduced, shrunken and The difference makes Closer This achieved the goal of temperature control.

[0086] It should also be noted that the third threshold and the second amplitude are selected based on the working conditions, and no specific limitations are made here.

[0087] when >Δ , +Δ hour, = +B. That is, when the difference between the actual temperature and the first set temperature exceeds a first threshold; and when the difference between the first difference and the optimal heat exchange temperature difference exceeds a third threshold, a second increase is applied to the second set temperature. Specifically, the maximum increase in the first difference is... +Δ That is, when the difference between the actual temperature and the first set temperature is greater than the first threshold; when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the limit for the increase of the first difference is the optimal heat exchange temperature difference plus the third threshold.

[0088] The above settings, when >Δ At that time, proof If the temperature is too high, it will not meet the requirements. In this case, it is necessary to increase the heat exchange between the target medium and the cooling medium. When the optimal heat exchange temperature difference is... At that time, the heat exchange between the target medium and the cooling medium is at its maximum, and +Δ hour, = +B makes the second set temperature at time n+1 closer to the second set temperature at time n. This increases the heat exchange between the target medium and the cooling medium. Reduced, shrunken and The difference makes Closer This achieved the goal of temperature control.

[0089] Furthermore, when <-Δ ,and -Δ hour, = +B. That is, when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; and when the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, a second increment is added to the second set temperature. Specifically, the maximum increment of the second set temperature is... -Δ That is, when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; when the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the limit value for increasing the second set temperature is the difference between the first set temperature and the minimum heat exchange temperature difference.

[0090] The above settings, when <-Δ ,prove If the temperature is too low, it does not meet the requirements, and the heat exchange between the target medium and the cooling medium needs to be reduced. The optimal heat exchange temperature difference is... At this time, the heat exchange between the target medium and the cooling medium is at its maximum. -Δ hour, = +B makes the second set temperature at time n+1 further away from the second set temperature at time n. This reduces the heat exchange between the target medium and the cooling medium. Increased, decreased and The difference makes Closer This achieved the goal of temperature control.

[0091] Furthermore, when <-Δ , +Δ hour, = -B. That is, when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the second magnitude is reduced based on the second set temperature. Specifically, the limit value after the second set temperature is reduced is the lowest set temperature allowed by the cooling medium or the dew point temperature of the heat exchanger 100.

[0092] The above settings, when <-Δ ,prove If the temperature is too low, it does not meet the requirements, and the heat exchange between the target medium and the cooling medium needs to be reduced. The optimal heat exchange temperature difference is... At this time, the heat exchange between the target medium and the cooling medium is at its maximum. +Δ hour, = -B makes the second set temperature at time n+1 further away from the second set temperature at time n. This reduces the heat exchange between the target medium and the cooling medium. Increased, decreased and The difference makes Closer This achieved the goal of temperature control.

[0093] Based on the same inventive concept, this application also provides a temperature control system, including a temperature sensor 300, a cooling device 200, a heat exchanger 100, and a control mechanism. The cooling device 200 can provide a cooling medium to the heat exchanger 100. Both the temperature sensor 300 and the cooling device 200 are electrically connected to the control mechanism. The control mechanism is used to obtain the actual temperature of the heat exchanger 100 based on the temperature sensor 300, and to determine whether the actual temperature and a first set temperature of the heat exchanger 100 satisfy a first relationship. When the actual temperature and the first set temperature satisfy the first relationship, the control mechanism determines whether a second set temperature of the cooling medium supplied by the cooling device 200 to the heat exchanger 100 satisfies a second relationship with an optimal set temperature. When the second set temperature and the optimal set temperature satisfy the second relationship, the control mechanism adjusts the second set temperature so that the actual temperature is within the fluctuation range above and below the first set temperature.

[0094] The heat exchanger 100 is used for thermal coupling with the target medium. The optimal set temperature corresponds one-to-one with the first set temperature. The optimal set temperature is the set temperature of the cooling medium when the cooling medium and the target medium have the maximum heat exchange capacity.

[0095] Specifically, the temperature sensor 300 obtains the actual temperature mentioned above by collecting the temperature of the heat exchange surface where the heat exchanger 100 is thermally coupled with the target medium.

[0096] The aforementioned temperature control system uses a control mechanism to acquire the actual temperature of the heat exchanger 100 based on the temperature sensor 300, and determines whether the actual temperature and the first set temperature of the heat exchanger 100 satisfy a first relationship. When the actual temperature and the first set temperature satisfy the first relationship, the system determines whether the second set temperature of the cooling medium supplied by the cooling device 200 to the heat exchanger 100 satisfies a second relationship with the optimal set temperature. When the second set temperature and the optimal set temperature satisfy the second relationship, the system adjusts the second set temperature so that the actual temperature is within the fluctuation range above and below the first set temperature, thereby achieving low-temperature control of the target medium. In other words, when adjusting the second set temperature, the optimal set temperature is used as a reference standard. By changing the heat exchange between the target medium and the cooling medium, the system ensures that the actual temperature is within the fluctuation range above and below the first set temperature, rather than simply increasing or decreasing the temperature of the cooling medium based on the relationship between the actual temperature and the set temperature, as is done in the prior art, thus achieving stable temperature control.

[0097] In some embodiments, the temperature control system is a direct-cooling control system; in this case, refer to... Figure 5 The direct-cooling control system includes a compressor 10, a condenser 20, a throttling mechanism 30, a temperature sensor 300, and an evaporator 40. The compressor 10, condenser 20, and throttling mechanism 30 together form the aforementioned cooling device 200, while the evaporator 40 forms the aforementioned heat exchanger 100. The temperature sensor 300 is installed at the heat exchange surface of the heat exchanger 100. The cooling medium supplied by the cooling device 200 to the heat exchanger 100 is the medium that flows to the evaporator 40 after being throttled by the throttling mechanism 30.

[0098] It is conceivable that in other embodiments, the temperature control system may also be an indirect cooling system. However, regardless of the type of cooling system the temperature control system is, the second set temperature is the set temperature of the cooling medium directly supplied to the heat exchanger 100.

[0099] Based on the same inventive concept, this application also provides a temperature control device for the temperature control method described above. The solution to the technical problem solved by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more temperature control device embodiments provided below can be found in the limitations of the temperature control method described above, and will not be repeated here.

[0100] In one embodiment, a temperature control device is provided, including a temperature acquisition module, a first judgment module, a second judgment module, and a temperature adjustment module, wherein:

[0101] The temperature acquisition module is used to acquire the actual temperature of heat exchanger 100.

[0102] The first judgment module is used to determine whether the actual temperature and the first set temperature of the heat exchanger 100 satisfy the first relationship.

[0103] The second judgment module is used to determine whether the second set temperature of the cooling medium supplied by the cooling device 200 to the heat exchanger 100 satisfies the second relationship with the optimal set temperature.

[0104] The temperature adjustment module is used to adjust the second set temperature when the second set temperature satisfies the second relationship with the optimal set temperature, so that the actual temperature is within the fluctuation range of the first set temperature.

[0105] Each module in the aforementioned temperature control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0106] The aforementioned temperature control device includes a temperature acquisition module for acquiring the actual temperature of the heat exchanger 100, a first judgment module for determining whether the actual temperature and the first set temperature of the heat exchanger 100 satisfy a first relationship, and a second judgment module for determining whether the second set temperature of the cooling medium supplied by the cooling device 200 to the heat exchanger 100 satisfies a second relationship with the optimal set temperature. When the first judgment module determines that the actual temperature and the first set temperature satisfy the first relationship, and the second judgment module determines that the second set temperature and the optimal set temperature satisfy the second relationship, the temperature adjustment module adjusts the second set temperature to ensure that the actual temperature is within the fluctuation range of the first set temperature, thereby achieving low-temperature control of the target medium. That is, when adjusting the second set temperature, the optimal set temperature is used as a reference standard. By changing the heat exchange between the target medium and the cooling medium, the actual temperature is ensured to be within the fluctuation range of the first set temperature, rather than simply increasing or decreasing the temperature of the cooling medium based on the relationship between the actual temperature and the set temperature, as in the prior art, thus achieving stable temperature control.

[0107] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0108] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A temperature control method, characterized in that, Including the following steps: The actual temperature of the heat exchanger is obtained; the heat exchanger is used for thermal coupling with the target medium. Determine whether the actual temperature and the first set temperature of the heat exchanger satisfy a first relationship; When the actual temperature and the first set temperature satisfy the first relationship, it is determined whether the second set temperature of the cooling medium supplied by the cooling device to the heat exchanger and the optimal set temperature satisfy the second relationship. When the second set temperature and the optimal set temperature satisfy the second relationship, the second set temperature is adjusted so that the actual temperature is within the fluctuation range of the first set temperature. Wherein, the optimal set temperature corresponds one-to-one with the first set temperature, and the optimal set temperature is the set temperature of the cooling medium when the cooling medium and the target medium have the maximum heat exchange; the first relationship is: the absolute value of the difference between the actual temperature and the first set temperature is greater than a first threshold.

2. The temperature control method according to claim 1, characterized in that, The step of adjusting the second set temperature when the second set temperature and the optimal set temperature satisfy the second relationship further includes: After a first preset time interval, return and re-execute the aforementioned steps until the actual temperature falls within the fluctuation range of the first set temperature.

3. The temperature control method according to claim 1 or 2, characterized in that, The second relationship is: the absolute value of the difference between the second set temperature and the optimal set temperature is greater than the second threshold.

4. The temperature control method according to claim 3, characterized in that, When the difference between the actual temperature and the first set temperature is greater than the first threshold; When the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the temperature is reduced by a first amount based on the second set temperature; when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the temperature is increased by the first amount based on the second set temperature. and / or When the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; When the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the first magnitude is increased based on the second set temperature; when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the first magnitude is decreased based on the second set temperature.

5. The temperature control method according to claim 4, characterized in that, When the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the limit value for decreasing the second set temperature is the sum of the optimal set temperature and the second threshold; when the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the limit value for increasing the second set temperature is the difference between the optimal set temperature and the second threshold; and / or When the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold, and when the difference between the second set temperature and the optimal set temperature is greater than the second threshold, the limit value after increasing the second set temperature is the difference between the first set temperature and the minimum heat exchange temperature difference; when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold, and when the difference between the second set temperature and the optimal set temperature is less than the negative value of the second threshold, the limit value after decreasing the second set temperature is the lowest set temperature allowed to be set by the cooling medium or the dew point temperature of the heat exchanger; the minimum heat exchange temperature difference is the minimum temperature difference between the cooling medium and the target medium that allows heat exchange.

6. The temperature control method according to claim 1 or 2, characterized in that, The second relationship is: the absolute value of the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold; the first difference is the difference between the first set temperature and the second set temperature, and the optimal heat exchange temperature difference is the difference between the first set temperature and the second set temperature when the target medium and the cooling medium have the maximum heat exchange capacity.

7. The temperature control method according to claim 6, characterized in that, When the difference between the actual temperature and the first set temperature is greater than the first threshold; When the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the second magnitude is reduced based on the second set temperature; when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the second magnitude is increased based on the second set temperature. and / or When the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold; When the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the second magnitude is increased based on the second set temperature; when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the second magnitude is decreased based on the second set temperature.

8. The temperature control method according to claim 7, characterized in that, When the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the limit for decreasing the first difference is the optimal heat exchange temperature difference minus the third threshold; when the difference between the actual temperature and the first set temperature is greater than the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the limit for increasing the first difference is the optimal heat exchange temperature difference plus the third threshold; and / or When the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is less than the negative value of the third threshold, the limit for increasing the second set temperature is the difference between the first set temperature and the minimum heat exchange temperature difference; when the difference between the actual temperature and the first set temperature is less than the negative value of the first threshold, and when the difference between the first difference and the optimal heat exchange temperature difference is greater than the third threshold, the limit for decreasing the second set temperature is the lowest set temperature allowed by the cooling medium or the dew point temperature of the heat exchanger; the minimum heat exchange temperature difference is the minimum temperature difference between the heat exchanger and the cooling medium that allows heat exchange.

9. The temperature control method according to claim 1, characterized in that, When the actual temperature does not satisfy the first relationship with the first set temperature, the second set temperature remains unchanged, and the process returns to re-evaluate whether the actual temperature and the first set temperature satisfy the first relationship.

10. A temperature control device, characterized in that, include: Temperature acquisition module, used to acquire the actual temperature of the heat exchanger; The first judgment module is used to determine whether the actual temperature and the first set temperature of the heat exchanger satisfy a first relationship; The second judgment module is used to determine whether the second set temperature of the cooling medium supplied by the cooling device to the heat exchanger satisfies the second relationship with the optimal set temperature. The temperature adjustment module is used to adjust the second set temperature when the second set temperature and the optimal set temperature satisfy the second relationship, so that the actual temperature is within the fluctuation range of the first set temperature. The heat exchanger is used for thermal coupling with the target medium. The optimal set temperature corresponds one-to-one with the first set temperature. The optimal set temperature is the set temperature of the cooling medium when the cooling medium and the target medium have the maximum heat exchange. The first relationship is that the absolute value of the difference between the actual temperature and the first set temperature is greater than a first threshold.

11. A temperature control system, characterized in that, It includes a temperature sensor, a cooling device, a heat exchanger, and a control mechanism. The cooling device can provide a cooling medium to the heat exchanger. The temperature sensor is thermally coupled to the heat exchanger. Both the temperature sensor and the cooling device are electrically connected to the control mechanism. The control mechanism is used to obtain the actual temperature of the heat exchanger based on the temperature sensor, and determine whether the actual temperature and the first set temperature of the heat exchanger satisfy a first relationship. When the actual temperature and the first set temperature satisfy the first relationship, it determines whether the second set temperature of the cooling medium supplied to the heat exchanger by the cooling device satisfies a second relationship with the optimal set temperature. When the second set temperature and the optimal set temperature satisfy the second relationship, it adjusts the second set temperature so that the actual temperature is within the fluctuation range of the first set temperature. The heat exchanger is used for thermal coupling with the target medium. The optimal set temperature corresponds one-to-one with the first set temperature. The optimal set temperature is the set temperature of the cooling medium when the cooling medium and the target medium have the maximum heat exchange. The first relationship is that the absolute value of the difference between the actual temperature and the first set temperature is greater than a first threshold.

12. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the temperature control method according to any one of claims 1-9.

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