Detection method, heat exchanger structure and air conditioning system

Abstract

The invention provides a detection method, a heat exchanger structure and an air conditioning system. The detection method comprises the steps that whether at least one throttling component connected with a heat exchanger needs to be detected or not is judged; when the at least one throttling component needs to be inspected, the opening degree of a first throttling component in the at least one throttling component is fixed, and a second throttling component in the at least one throttling component is controlled to be fully opened or fully closed; according to the temperature value of the first temperature detector corresponding to the first throttling component and the temperature value of the second temperature detector corresponding to the second throttling component, whether the second throttling component is stuck or not is judged, and the detection method solves the technical problem that the damage condition of the throttling components of the heat exchanger cannot be found easily.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a detection method, a heat exchanger structure and an air conditioning system. Background Art

[0002] In order to make the upper and lower layers of the outdoor heat exchanger evenly separated and give full play to the heat exchange efficiency of the heat exchanger, some people have proposed to use multiple throttling components to independently control the flow of refrigerant for the upper and lower layers of the same heat exchanger. However, it was found during operation that if the throttling component is damaged (stuck or out of control), the system will still operate normally and cannot be identified and detected and report a fault reminder. However, if the damage of the throttling component is not discovered in time, it will lead to the inability to accurately control the amount of refrigerant in different areas of the outdoor heat exchanger, and there will still be problems with uneven distribution of refrigerant inside the heat exchanger, thereby affecting the heat exchange efficiency of the heat exchanger, and thus losing the meaning of setting up multiple throttling components for independent control.

[0003] However, there is currently no effective self-inspection method for damaged multi-throttling components of outdoor heat exchangers, which can quickly discover the problem and choose to replace new components in time, thereby affecting the throttling components from being able to play their role and affecting the improvement of the heat exchange efficiency of the heat exchanger.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a detection method, a heat exchanger structure and an air conditioning system to solve the technical problem in the related art that damage to the throttling component of the heat exchanger is not easy to be discovered.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a detection method is provided, including: judging whether at least one throttling component connected to the heat exchanger needs to be inspected; when at least one of the throttling components needs to be inspected, fixing the opening of the first throttling component in at least one of the throttling components, and controlling the second throttling component in at least one of the throttling components to be fully open or fully closed; judging whether the second throttling component is stuck according to the temperature value of the first temperature detector corresponding to the first throttling component and the temperature value of the second temperature detector corresponding to the second throttling component.

[0007] Furthermore, the method for determining whether the second throttling component is stuck includes: setting the first throttling component to the maximum opening; completely closing the second throttling component, and after running for a period of time, observing whether the temperature value of the second temperature detector is close to the ambient temperature T1; if the temperature of the second temperature detector is not close to T1, the second throttling component may be stuck; if the temperature change of the second temperature detector is close to the ambient temperature T1, the second throttling component is not stuck. Furthermore, the method for determining whether the temperature value of the second temperature detector is close to the ambient temperature T1 includes: setting thresholds X and Y; wherein X<T1<Y; if X<the temperature of the second temperature detector<Y, determining whether the temperature value of the second temperature detector is close to the ambient temperature T1.

[0008] Furthermore, if the second throttle component is not stuck, set the second throttle component to the maximum opening; completely close the first throttle component; after running for a period of time, observe whether the temperature value of the first temperature detector is close to the ambient temperature T1; if the temperature value of the first temperature detector is not close to T1, the first throttle component may be stuck; if the temperature change of the first temperature detector is close to the ambient temperature T1, the first throttle component is not stuck.

[0009] Furthermore, the method for determining whether at least one throttling component connected to the heat exchanger needs to be inspected includes: adjusting the opening of the first throttling component and the second throttling component so that the temperature value of the first temperature detector is consistent with the temperature value of the second temperature detector corresponding to the second throttling component; setting an opening threshold, if the opening of the first throttling component or the second throttling component exceeds the opening threshold at this time, it is determined that at least one of the throttling components needs to be inspected.

[0010] Further, the first temperature detector corresponding to the first throttling component is a temperature detector arranged on the same pipeline as the first throttling component; and / or the second temperature detector corresponding to the second throttling component is a temperature detector arranged on the same pipeline as the second throttling component.

[0011] Further, if it is determined that both the first throttling component and the second throttling component are not stuck, it is determined whether the system in which the heat exchanger is located is in a refrigerant storage state; if the system in which the heat exchanger is located is not in a refrigerant storage state, it is determined whether at least one of the throttling components is out of control. Furthermore, a method for determining whether the system in which the heat exchanger is located is in a refrigerant storage state includes: when the heat exchanger is running, if the temperature value of the first temperature detector and the temperature value of the second temperature detector are both less than a threshold value T1+t, then it is determined that the system is in a refrigerant storage state; wherein T1 is the ambient temperature and t is the set value.

[0012] Furthermore, the method for determining whether at least one of the throttling components is out of control includes: setting the first throttling component to a maximum opening, and setting the second throttling component to a preset opening; after the heat exchanger has been running for a period of time, increasing the opening of the second throttling component; if the temperature value of the second temperature detector rises and the temperature value of the first temperature detector drops, it is determined that the second throttling component is not out of control; otherwise, it is determined that the second throttling component is out of control.

[0013] Furthermore, the method for determining whether at least one of the throttling components is out of control includes: setting the first throttling component to a maximum opening, and setting the second throttling component to a preset opening; after the heat exchanger has been running for a period of time, reducing the opening of the second throttling component; if the temperature value of the second temperature detector decreases and the temperature value of the first temperature detector increases, it is determined that the second throttling component is not out of control; otherwise, it is determined that the second throttling component is out of control.

[0014] A heat exchanger structure is suitable for the above-mentioned detection method, and the heat exchanger structure includes: a heat exchanger; a first heat exchange pipeline, one end of the first heat exchange pipeline is connected to the liquid outlet of the heat exchanger, and the other end of the first heat exchange pipeline is connected to the indoor unit system; the first heat exchange pipeline is provided with a first throttling component for controlling the opening of the first heat exchange pipeline and a first temperature detector for detecting the temperature of the fluid in the first heat exchange pipeline; a second heat exchange pipeline, one end of the second heat exchange pipeline is connected to the liquid outlet of the heat exchanger, and the other end of the second heat exchange pipeline is connected to the indoor unit system; the second heat exchange pipeline is provided with a second throttling component for controlling the opening of the second heat exchange pipeline and a second temperature detector for detecting the temperature of the fluid in the second heat exchange pipeline.

[0015] Furthermore, the heat exchanger structure also includes: an upper liquid collection component, the upper liquid collection component is connected to the heat exchanger, and the first heat exchange pipeline is connected to the heat exchanger through the upper liquid collection component; a lower liquid collection component located below the upper liquid collection component, the lower liquid collection component is connected to the heat exchanger, and the second heat exchange pipeline is connected to the heat exchanger through the lower liquid collection component.

[0016] An air conditioning system is applicable to the above detection method, and the air conditioning system comprises the above heat exchanger structure.

[0017] Beneficial effects: The detection method of the present invention includes judging whether at least one throttling component connected to the heat exchanger needs to be inspected; when at least one throttling component needs to be inspected, fixing the opening of the first throttling component in the at least one throttling component, and controlling the second throttling component in the at least one throttling component to be fully opened or fully closed; judging whether the second throttling component is stuck according to the temperature value of the first temperature detector corresponding to the first throttling component and the temperature value of the second temperature detector corresponding to the second throttling component. With the above arrangement, the opening of one throttling component is fixed, and the other throttling component is fully closed or fully opened to observe whether the temperature of its corresponding temperature detector changes to judge whether it is stuck. A self-inspection method for throttling components is proposed, which adjusts the opening size of the throttling component to observe the temperature change of the corresponding temperature detector, and timely judges whether the throttling component is damaged and needs to be replaced without removing the throttling component for professional inspection, thereby solving the technical problem that the damage of the throttling component of the heat exchanger is not easy to be discovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the heat exchanger structure used in the embodiment of the present invention; Figure 2 It is a flow chart of the control method adopted in the embodiment of the present invention.

[0019] The above drawings include the following reference numerals: 1. Heat exchanger; 21. First throttling component; 22. Second throttling component; 31. First temperature detector; 32. Second temperature detector; 4. Indoor unit system; 51. Upper liquid collecting component; 52. Lower liquid collecting component. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] According to an embodiment of the present invention, a detection method is provided, including: determining whether at least one throttling component connected to a heat exchanger 1 needs to be inspected; when at least one throttling component needs to be inspected, fixing the opening of the first throttling component 21 in at least one throttling component, and controlling the second throttling component 22 in at least one throttling component to be fully opened or fully closed; determining whether the second throttling component 22 is stuck according to the temperature value of the first temperature detector 31 corresponding to the first throttling component 21 and the temperature value of the second temperature detector 32 corresponding to the second throttling component 22. With the above arrangement, the opening of one throttling component is fixed, and the other throttling component is fully closed or fully opened to observe whether the temperature of its corresponding temperature detector changes to determine whether it is stuck. A self-inspection method for a throttling component is proposed, by adjusting the opening size of the throttling component to observe the temperature change of the corresponding temperature detector, timely determining whether the throttling component is damaged and needs to be replaced without removing the throttling component for professional inspection, solving the technical problem that the damage of the throttling component of the heat exchanger is not easy to be discovered.

[0022] In the control method of this embodiment, see Figure 1 , Figure 2 The method for determining whether the second throttle component 22 is stuck includes: setting the first throttle component 21 to the maximum opening; completely closing the second throttle component 22, and after running for a period of time, observing whether the temperature value of the second temperature detector 32 is close to the ambient temperature T1; if the temperature of the second temperature detector 32 is not close to T1, the second throttle component 22 may be stuck; if the temperature change of the second temperature detector 32 is close to the ambient temperature T1, the second throttle component 22 is not stuck.

[0023] Specifically, if the second throttle component 22 is not stuck, then the opening degree of the second throttle component 22 is 0, that is, it is completely closed. When the second throttle component 22 is closed, the refrigerant in the lower heat exchanger will gradually stop flowing, and the refrigerant will gradually accumulate in the lower heat exchanger, and then the lower heat exchanger will not exchange heat, so the temperature will gradually approach the ambient temperature. The above method can effectively detect whether the second throttle component 22 is stuck.

[0024] See also Figure 1 , Figure 2 In the control method of this embodiment, the method for judging whether the temperature value of the second temperature detector 32 is close to the ambient temperature T1 includes: setting thresholds X and Y; wherein X<T1<Y; if X<the temperature of the second temperature detector 32<Y, then judging whether the temperature value of the second temperature detector 32 is close to the ambient temperature T1. In this way, a range is set, and when the temperature of the second temperature detector 32 is within the range near the ambient temperature value T1, then judging whether the temperature value of the second temperature detector 32 is close to the ambient temperature T1, and such judgment is simple and easy to operate.

[0025] In the control method of this embodiment, see Figure 1 , Figure 2 If the second throttle component 22 is not stuck, set the second throttle component 22 to the maximum opening; completely close the first throttle component 21; after running for a period of time, observe whether the temperature value of the first temperature detector 31 is close to the ambient temperature T1; if the temperature value of the first temperature detector 31 is not close to T1, the first throttle component 21 may be stuck; if the temperature change of the first temperature detector 31 is close to the ambient temperature T1, the first throttle component 21 is not stuck.

[0026] Specifically, when performing the above operation, it is not certain whether the first throttle component 21 is stuck, so it is assumed that the first throttle component 21 is not stuck, and whether the second throttle component 22 is stuck is verified. If the second throttle component 22 is stuck, a new valve is replaced. If the second throttle component 22 is not stuck, it is verified whether the first throttle component 21 is stuck. Mutual verification is required.

[0027] In the control method of this embodiment, see Figure 1 , Figure 2 The method for judging whether at least one throttling component connected to the heat exchanger 1 needs to be inspected includes: adjusting the opening of the first throttling component 21 and the second throttling component 22 so that the temperature value of the first temperature detector 31 is consistent with the temperature value of the second temperature detector 32 corresponding to the second throttling component 22; setting an opening threshold, if the opening of the first throttling component 21 or the second throttling component 22 exceeds the opening threshold at this time, it is judged that at least one throttling component needs to be inspected.

[0028] Specifically, due to the different heat exchange effects at different positions of the heat exchanger, the temperatures of the first temperature detector 31 and the second temperature detector 32 are different. For higher energy efficiency, we adjust the first throttling component 21 and the second throttling component 22 to make their corresponding temperature detectors have the same temperature. At this time, there is a threshold for the opening between the throttling components 21 and 22. Under the conditions of certain operating conditions and a certain amount of circulating refrigerant, this threshold is determined. Therefore, if this threshold is exceeded, we suspect that at least one throttling component is damaged and needs to be inspected.

[0029] In the control method of this embodiment, see Figure 1 The first temperature detector 31 corresponding to the first throttle component 21 is a temperature detector arranged on the same pipeline as the first throttle component 21; and / or the second temperature detector 32 corresponding to the second throttle component 22 is a temperature detector arranged on the same pipeline as the second throttle component 22. In this way, the throttle components are matched with the temperature detectors, and each temperature detector detects the temperature of the corresponding throttle component, so that the condition of each throttle component can be accurately reflected.

[0030] See also Figure 2 In the control method of this embodiment, if it is determined that the first throttling component 21 and the second throttling component 22 are not stuck, it is determined whether the system in which the heat exchanger 1 is located is in a refrigerant storage state; if the system in which the heat exchanger 1 is located is not in a refrigerant storage state, it is determined whether at least one throttling component is out of control.

[0031] Specifically, the amount of system refrigerant and the temperature change of the temperature detector are related to the degree of influence of the opening of the throttling component. If the system is in a state of accumulating refrigerant, the temperature change of the temperature detector is not obvious when adjusting the throttling component. In this state, it is very easy to misjudge whether the throttling component is out of control. The above method can avoid misjudgment of the throttling component.

[0032] In the control method of this embodiment, see Figure 2 The method for judging whether the system where the heat exchanger 1 is located is in a refrigerant storage state includes: when the heat exchanger 1 is running, if the temperature value of the first temperature detector 31 and the temperature value of the second temperature detector 32 are both less than the threshold value T1+t, then the system is judged to be in a refrigerant storage state; wherein T1 is the ambient temperature, and t is the set value. In this way, it can be effectively judged that the system is in a refrigerant storage state.

[0033] See also Figure 2 In the control method of this embodiment, the method for judging whether at least one throttling component is out of control includes: setting the first throttling component 21 to the maximum opening, and setting the second throttling component 22 to the preset opening; after the heat exchanger 1 has been running for a period of time, increasing the opening of the second throttling component 22; if the temperature value of the second temperature detector 32 rises, and the temperature value of the first temperature detector 31 drops, it is judged that the second throttling component 22 is not out of control; otherwise, it is judged that the second throttling component 22 is out of control. In this way, when the opening of one throttling component is fixed and the opening of the other throttling component is gradually opened, it is observed whether the changes in the degrees of each temperature detector conform to the law to judge whether it is out of control, which is convenient and accurate to operate.

[0034] In the control method of this embodiment, see Figure 2 The method for judging whether at least one throttling component is out of control includes: setting the first throttling component 21 to the maximum opening, and setting the second throttling component 22 to the preset opening; after the heat exchanger 1 has been running for a period of time, reducing the opening of the second throttling component 22; if the temperature value of the second temperature detector 32 decreases, and the temperature value of the first temperature detector 31 increases, it is judged that the second throttling component 22 is not out of control; otherwise, it is judged that the second throttling component 22 is out of control. In this way, when the opening of one throttling component is fixed and the opening of the other throttling component is gradually opened, it is observed whether the changes in the degrees of each temperature detector conform to the law to judge whether it is out of control, which is convenient and accurate to operate.

[0035] See also Figure 1The heat exchanger structure of this embodiment is suitable for the above-mentioned detection method, and the heat exchanger structure includes: a heat exchanger 1; a first heat exchange pipeline, one end of the first heat exchange pipeline is connected to the liquid outlet of the heat exchanger 1, and the other end of the first heat exchange pipeline is connected to the indoor unit system 4; the first heat exchange pipeline is provided with a first throttling component 21 for controlling the opening of the first heat exchange pipeline and a first temperature detector 31 for detecting the temperature of the fluid in the first heat exchange pipeline; a second heat exchange pipeline, one end of the second heat exchange pipeline is connected to the liquid outlet of the heat exchanger 1, and the other end of the second heat exchange pipeline is connected to the indoor unit system 4; the second heat exchange pipeline is provided with a second throttling component 22 for controlling the opening of the second heat exchange pipeline and a second temperature detector 32 for detecting the temperature of the fluid in the second heat exchange pipeline.

[0036] In the heat exchanger structure of this embodiment, see Figure 1 The heat exchanger structure also includes: an upper liquid collection component 51, the upper liquid collection component 51 is connected to the heat exchanger 1, and the first heat exchange pipeline is connected to the heat exchanger 1 through the upper liquid collection component 51; a lower liquid collection component 52 located below the upper liquid collection component 51, the lower liquid collection component 52 is connected to the heat exchanger 1, and the second heat exchange pipeline is connected to the heat exchanger 1 through the lower liquid collection component 52.

[0037] Specifically, the indoor unit system 4 and the outdoor unit system form a complete air conditioning refrigeration system, which generates or absorbs heat in the indoor air through the phase change of the refrigerant in the heat exchanger to achieve the effect of cooling or heating. The outdoor heat exchanger 3 is divided into different areas due to the difference in the upper and lower wind fields, and each area has a separate control. The upper area is connected to the upper liquid collection component 51, and then connected to the first throttling component 21. The amount of refrigerant passing through the upper heat exchanger is adjusted by the opening size of the first throttling component 21. The first temperature detector 31 is located between the upper liquid collection component 51 and the first throttling component 21. During the refrigeration operation, the state of the refrigerant after heat exchange through the upper heat exchanger can be reflected. The lower area is connected to the lower liquid collection component 52, and then connected to the second throttling component 22. The amount of refrigerant passing through the upper heat exchanger is adjusted by the opening size of the second throttling component 22. The second temperature detector 32 is located between the lower liquid collection component 52 and the second throttling component 22. During the refrigeration operation, the state of the refrigerant after heat exchange through the lower heat exchanger can be reflected.

[0038] The air conditioning system of this embodiment is applicable to the above-mentioned detection method, and the air conditioning system includes the above-mentioned heat exchanger structure.

[0039] The control method of this embodiment is described as follows: The indoor unit system 4 and the outdoor unit system form a complete air conditioning refrigeration system, which generates or absorbs heat in the indoor air through the phase change of the refrigerant in the heat exchanger to achieve the effect of cooling or heating. The outdoor heat exchanger 3 is divided into different areas due to the difference in the upper and lower wind fields, and each area has a separate control. The upper area is connected to the upper liquid collection component 51, and then connected to the first throttling component 21. The amount of refrigerant passing through the upper heat exchanger is adjusted by the opening size of the first throttling component 21. The first temperature detector 31 is located between the upper liquid collection component 51 and the first throttling component 21. During the refrigeration operation, the state of the refrigerant after heat exchange through the upper heat exchanger can be reflected. The lower area is connected to the lower liquid collection component 52, and then connected to the second throttling component 22. The amount of refrigerant passing through the upper heat exchanger is adjusted by the opening size of the second throttling component 22. The second temperature detector 32 is located between the lower liquid collection component 52 and the second throttling component 22. During the refrigeration operation, the state of the refrigerant after heat exchange through the lower heat exchanger can be reflected.

[0040] Based on the above system structure, the self-check method when the throttling component is suspected to be damaged during the refrigeration operation of the system is as follows: In the refrigeration mode. Under a certain circulating refrigerant volume, the opening difference between the first throttling component 21 and 2 is within X0pls, and the temperatures of the first temperature detector 31 and the second temperature detector 32 can be uniform. If the opening exceeds X0pls, it is suspected that a certain throttling component is damaged. Verify which throttling component has what problem in the following way.

[0041] Assuming that the first throttle component 21 is in a normal state, set it to the maximum opening Xmpls, and verify whether the second throttle component 22 is damaged. Set the second throttle component 22 to 0pls, that is, a completely closed state. After running for t0 time, observe whether the temperature change of the second temperature detector 32 is close to the ambient temperature T1. If the temperature change of the second temperature detector 32 is not close to T1, the second throttle component 22 may be stuck; if the temperature change of the second temperature detector 32 is close to the ambient temperature T1, the second throttle component 22 is not stuck. If the second throttle component 22 is stuck, replace it with a new component. If the second throttle component 22 is not stuck, set it to the maximum opening Xmpls and then set the first throttle component 21 to 0pls, that is, a completely closed state. After running for t0 time, observe whether the temperature change of the first temperature detector 31 is close to the ambient temperature T1. If the temperature change of the first temperature detector 31 is not close to T1, the first throttle component 21 may be stuck; if the temperature change of the first temperature detector 31 is close to the ambient temperature T1, the first throttle component 21 is not stuck. If the first throttle component 21 and the second throttle component 22 are not stuck, the second damage condition is verified.

[0042] The second damage situation - the valve loses control, that is, the opening of the throttling component increases, that is, the actual opening of the throttling component may decrease or not increase according to the set value; when the opening of the throttling component is reduced, the actual opening of the throttling component may increase or not decrease according to the set value. The above two are out-of-control situations. If it is verified whether it is a failure situation, first determine whether the system is in a refrigerant storage state, that is, the amount of refrigerant circulating in the system is too much. The reason is that if the system is in a refrigerant storage state, the amount of refrigerant is too much, resulting in the temperature change of the temperature detector when adjusting the throttling component is not obvious. At this time, it is very easy to misjudge whether the throttling component is out of control, so the system must be self-checked when it is not in a refrigerant storage state. During the refrigeration cycle, if the temperature value of the first temperature detector 31, 2 is less than T1+t (T1 is the ambient temperature, t is a threshold), it is considered that the system is in a refrigerant storage state. For an air conditioning system with a refrigerant adjustment tank, the system can be taken out of the refrigerant storage state by adding refrigerant to the refrigerant adjustment tank, so that the temperature of the first temperature detector 31, 2 is more obviously reflected by the opening of the first throttling component 21 and the second throttling component 22. At this time, the following operations are performed: The first throttling component 21 is set to the maximum opening Xmpls, and the second throttling component 22 is adjusted to a fixed opening X (X<Xm). After running for t0 time, the opening is increased by X1pls. If the throttling component is not out of control at this time, the opening of the second throttling component 22 becomes x+ X1. At this time, due to the increase in the opening of the second throttling component 22, the refrigerant flow rate in the area of ​​the external unit condenser controlled by the second throttling component 22 becomes faster. The increase in the unit mass flow of the refrigerant will lead to insufficient heat exchange, which will cause the temperature value of the corresponding second temperature detector 32 to rise. At the same time, since the circulating refrigerant amount of the system is fixed, the unit mass flow of the refrigerant in the area of ​​the external unit condenser controlled by the second throttling component 22 is large, and the corresponding unit mass flow of the refrigerant in the area of ​​the external unit condenser controlled by the first throttling component 21 becomes smaller, which will cause the temperature value of the corresponding first temperature detector 31 to drop. On the contrary, if the second throttle component 22 is adjusted to a fixed opening X (X<Xm), the opening is reduced by X1pls after running for t0 time. If the throttle component is not out of control at this time, the opening of the second throttle component 22 becomes x-X1, and the temperature value of the second temperature detector 32 decreases, and the temperature value of the first temperature detector 31 increases. Repeat several times. If the temperature changes of the first temperature detectors 31 and 2 meet the above rules, it can be verified that the second throttle component 22 is not out of control. If not, it means that the second throttle component 22 is out of control, and a new throttle component needs to be replaced in the next step.

[0043] At this time, if the second throttle component 22 is damaged, a new component can be replaced. After that, when it is determined that the second throttle component 22 can be controlled normally, the above method is used to verify whether the first throttle component 21 is damaged.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0046] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0047] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0048] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A detection method, characterized in that: include: Determining whether at least one throttling component connected to the heat exchanger (1) needs to be inspected; When at least one of the throttling components needs to be inspected, the opening degree of a first throttling component (21) in at least one of the throttling components is fixed, and a second throttling component (22) in at least one of the throttling components is controlled to be fully opened or fully closed; and based on the temperature value of a first temperature detector (31) corresponding to the first throttling component (21) and the temperature value of a second temperature detector (32) corresponding to the second throttling component (22), it is determined whether the second throttling component (22) is stuck.

2. The detection method according to claim 1, characterized in that: The method for determining whether the second throttling component (22) is stuck comprises: Setting the first throttle component (21) to a maximum opening; The second throttling component (22) is completely closed, and after running for a period of time, the temperature value of the second temperature detector (32) is observed to be close to the ambient temperature T1; If the temperature of the second temperature detector (32) is not close to T1, the second throttling component (22) may be stuck; if the temperature change of the second temperature detector (32) is close to the ambient temperature T1, the second throttling component (22) is not stuck.

3. The detection method according to claim 2, characterized in that: The method for determining whether the temperature value of the second temperature detector (32) is close to the ambient temperature T1 comprises: Threshold values ​​X and Y are set; wherein X<T1<Y; if X<the temperature of the second temperature detector (32)<Y, it is determined whether the temperature value of the second temperature detector (32) is close to the ambient temperature T1.

4. The detection method according to claim 2, characterized in that: If the second throttling component (22) is not stuck, setting the second throttling component (22) to a maximum opening; The first throttling component (21) is completely closed; after running for a period of time, the temperature value of the first temperature detector (31) is observed to be close to the ambient temperature T1; If the temperature value of the first temperature detector (31) is not close to T1, the first throttling component (21) may be stuck; If the temperature change of the first temperature detector (31) is close to the ambient temperature T1, the first throttle component (21) is not stuck.

5. The detection method according to claim 1, characterized in that: The method for determining whether at least one throttling component connected to a heat exchanger (1) needs to be inspected comprises: adjusting the openings of the first throttling component (21) and the second throttling component (22) so that the temperature value of the first temperature detector (31) is consistent with the temperature value of the second temperature detector (32) corresponding to the second throttling component (22); An opening threshold is set, and if the opening of the first throttling component (21) or the second throttling component (22) exceeds the opening threshold, it is determined that at least one of the throttling components needs to be inspected.

6. The detection method according to claim 5, characterized in that: The first temperature detector (31) corresponding to the first throttling component (21) is a temperature detector arranged on the same pipeline as the first throttling component (21); and / or, The second temperature detector (32) corresponding to the second throttling component (22) is a temperature detector arranged on the same pipeline as the second throttling component (22).

7. The detection method according to claim 1, characterized in that: If it is determined that the first throttling component (21) and the second throttling component (22) are not stuck, then it is determined whether the system in which the heat exchanger (1) is located is in a refrigerant storage state; If the system in which the heat exchanger (1) is located is not in a refrigerant storage state, it is determined whether at least one of the throttling components is out of control.

8. The detection method according to claim 7, characterized in that: The method for determining whether the system in which the heat exchanger (1) is located is in a refrigerant storage state comprises: When the heat exchanger (1) is in operation, if the temperature value of the first temperature detector (31) and the temperature value of the second temperature detector (32) are both less than a threshold value T1+t, then it is determined that the system is in a refrigerant storage state; wherein T1 is the ambient temperature and t is the set value.

9. The detection method according to claim 7, characterized in that: The method for determining whether at least one of the throttling components is out of control comprises: Setting the first throttling component (21) to a maximum opening, and setting the second throttling component (22) to a preset opening; After the heat exchanger (1) has been running for a period of time, the opening of the second throttling component (22) is increased; If the temperature value of the second temperature detector (32) increases and the temperature value of the first temperature detector (31) decreases, it is determined that the second throttling component (22) is not out of control; otherwise, it is determined that the second throttling component (22) is out of control.

10. The detection method according to claim 7, characterized in that: The method for determining whether at least one of the throttling components is out of control comprises: Setting the first throttling component (21) to a maximum opening, and setting the second throttling component (22) to a preset opening; After the heat exchanger (1) has been running for a period of time, reducing the opening of the second throttling component (22); If the temperature value of the second temperature detector (32) decreases and the temperature value of the first temperature detector (31) increases, it is determined that the second throttling component (22) is not out of control; otherwise, it is determined that the second throttling component (22) is out of control.

11. A heat exchanger structure, suitable for the detection method according to any one of claims 1 to 10, characterized in that: The heat exchanger structure comprises: Heat exchanger (1); a first heat exchange pipeline, one end of the first heat exchange pipeline being in communication with a liquid outlet of the heat exchanger (1), and the other end of the first heat exchange pipeline being connected to an indoor unit system (4); the first heat exchange pipeline being provided with a first throttling component (21) for controlling the opening of the first heat exchange pipeline and a first temperature detector (31) for detecting the temperature of the fluid in the first heat exchange pipeline; A second heat exchange pipeline, one end of the second heat exchange pipeline is connected to the liquid outlet of the heat exchanger (1), and the other end of the second heat exchange pipeline is connected to the indoor unit system (4); the second heat exchange pipeline is provided with a second throttling component (22) for controlling the opening of the second heat exchange pipeline and a second temperature detector (32) for detecting the temperature of the fluid in the second heat exchange pipeline.

12. The heat exchanger structure according to claim 11, characterized in that: The heat exchanger structure also includes: an upper liquid collecting component (51), the upper liquid collecting component (51) being connected to the heat exchanger (1), and the first heat exchange pipeline being connected to the heat exchanger (1) via the upper liquid collecting component (51); A lower liquid collection component (52) is located below the upper liquid collection component (51), the lower liquid collection component (52) is connected to the heat exchanger (1), and the second heat exchange pipeline is connected to the heat exchanger (1) through the lower liquid collection component (52).

13. An air conditioning system, applicable to the detection method according to any one of claims 1 to 10, characterized in that: The air conditioning system comprises the heat exchanger structure according to claim 11 or 12.

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