Refrigeration and heating capacity display method, controller and multi-split air conditioner system

Abstract

The invention discloses a refrigeration and heating capacity display method, a controller and a multi-split system. An indoor unit in the multi-split system detects the temperature of an evaporator and the indoor temperature and obtains the operation frequency of a compressor, and then the temperature of the evaporator is compensated according to the current operation mode of the indoor unit; the real-time refrigerating and heating capacity is calculated through the compensated evaporator temperature, the accuracy of the real-time refrigerating and heating capacity can be improved, the accumulated refrigerating and heating capacity is calculated according to the real-time refrigerating and heating capacity, the accumulated refrigerating and heating capacity is displayed through the display terminal, a user can conveniently know the refrigerating and heating level of the indoor unit, and the user experience is improved. And a user can be promoted to actively save energy.

Description

Technical Field

[0001] This application relates to the technical field of air conditioner applications, and particularly to a method for displaying refrigerating and heating capacities, a controller, and a multi-connected air conditioner system. Background Art

[0002] Currently, the outdoor unit of a multi-connected air conditioner system can be paired with indoor units of various configurations and capacity segments. Usually, the multi-connected air conditioner system is powered by the outdoor unit, and the electronic control program generally calculates the overall power consumption, refrigerating capacity, and heating capacity only from the outdoor unit side. Currently, there is no technology that can enable each indoor unit to display its refrigerating and heating capacities during operation. Summary of the Invention

[0003] Embodiments of this application provide a method for displaying refrigerating and heating capacities, a controller, and a multi-connected air conditioner system, which can calculate and display the refrigerating and heating capacities for each indoor unit.

[0004] In a first aspect, an embodiment of this application provides a method for displaying refrigerating and heating capacities, which is applied to a multi-connected air conditioner system including multiple indoor units. The display method includes:

[0005] Obtain the evaporator temperature and the indoor temperature;

[0006] Compensate the evaporator temperature according to the operating mode of the indoor unit. The operating mode includes a refrigeration mode and a heating mode;

[0007] Determine the real-time refrigerating and heating capacities according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature;

[0008] Determine the cumulative refrigerating and heating capacities according to the real-time refrigerating and heating capacities, and display the cumulative refrigerating and heating capacities through a display terminal.

[0009] In some embodiments, the operating mode of the indoor unit is the heating mode. The compensating the evaporator temperature according to the operating mode of the indoor unit includes:

[0010] Compensate the evaporator temperature according to a preset first correction coefficient to obtain a first temperature value;

[0011] Compensate the exhaust temperature of the compressor according to a preset second correction coefficient to obtain a second temperature value.

[0012] In some embodiments, the determining the real-time refrigerating and heating capacities according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature includes:

[0013] Determine the sum of the product of the first temperature value and the first distribution coefficient and the product of the second temperature value and the second distribution coefficient to obtain a third temperature value; the sum of the first distribution coefficient and the second distribution coefficient is equal to 1;

[0014] Determine the real-time heating capacity according to a preset third correction coefficient, the third temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit; the third correction coefficient corresponds to the model of the indoor unit.

[0015] In some embodiments, the operating mode of the indoor unit is a cooling mode; the compensating the evaporator temperature according to the operating mode of the indoor unit includes:

[0016] Compensate the evaporator temperature according to a preset fourth correction coefficient and the operating frequency of the compressor to obtain a fourth temperature value.

[0017] In some embodiments, the determining the real-time cooling capacity according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature includes:

[0018] If the difference between the indoor temperature and the fourth temperature value is greater than a preset temperature threshold, determine the real-time cooling capacity according to a preset fifth correction coefficient, the difference between the indoor temperature and the fourth temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit;

[0019] If the difference between the indoor temperature and the fourth temperature value is less than a preset temperature threshold, determine the real-time cooling capacity according to a preset sixth correction coefficient, the difference between the indoor temperature and the fourth temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit;

[0020] Wherein, the fifth correction coefficient and the sixth correction coefficient correspond to the model of the indoor unit.

[0021] In some embodiments, the real-time air supply volume is determined by the following method:

[0022] Obtain the real-time rotation speed of the indoor fan;

[0023] Determine the real-time air supply volume according to the real-time rotation speed, a preset strong wind rotation speed, and a preset strong wind air volume; the strong wind rotation speed represents the fan rotation speed corresponding to the strong wind gear of the indoor fan, and the strong wind air volume represents the air supply volume corresponding to the strong wind gear of the indoor fan.

[0024] In some embodiments, the determining the cumulative cooling capacity according to the real-time cooling capacity includes:

[0025] Calculate a real-time cooling capacity every first time interval;

[0026] Integrate the real-time cooling and heating capacity over time to obtain the cumulative cooling and heating capacity.

[0027] In some embodiments, the display terminal is a display component of the indoor unit, and the indoor unit includes a plurality of storage sectors; the step of displaying the cumulative cooling and heating capacity through the display terminal includes:

[0028] Write the cumulative cooling and heating capacity into an unfilled storage sector currently in sequence according to the order of the storage sectors;

[0029] Report several of the most recently written cumulative cooling and heating capacities to the outdoor unit of the multi-connected air conditioner system at every second time interval.

[0030] In a second aspect, an embodiment of the present application provides a controller, including at least one processor and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor, and when the instructions are executed by the at least one processor, the at least one processor is enabled to execute the display method as described in the first aspect.

[0031] In a third aspect, an embodiment of the present application provides a multi-connected air conditioner system, including the controller as described in the second aspect.

[0032] The display method, controller and multi-connected air conditioner system for the cooling and heating capacity in the embodiments of the present application have at least the following beneficial effects: In the multi-connected air conditioner system, the indoor unit detects the evaporator temperature, indoor temperature and obtains the operating frequency of the compressor, and then compensates the evaporator temperature according to the current operating mode of the indoor unit. Calculate the real-time cooling and heating capacity using the compensated evaporator temperature, which can improve the accuracy of the real-time cooling and heating capacity, and calculate the cumulative cooling and heating capacity based on the real-time cooling and heating capacity, and display the cumulative cooling and heating capacity through the display terminal, which is convenient for users to know the cooling and heating level of the indoor unit and helps to encourage users to save energy actively.

[0033] Other features and advantages of the present application will be described in the following specification, and part of them will become obvious from the specification or be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of a multi-connected air conditioner system provided by an embodiment of the present application;

[0035] Figure 2 It is an overall flowchart of a display method provided by an embodiment of the present application;

[0036] Figure 3Flow chart of compensating temperature in heating mode provided by an embodiment of the present application;

[0037] Figure 4 Flow chart of calculating real-time heating capacity provided by an embodiment of the present application;

[0038] Figure 5 Flow chart of compensating temperature in cooling mode provided by an embodiment of the present application;

[0039] Figure 6 Flow chart of calculating real-time cooling capacity provided by an embodiment of the present application;

[0040] Figure 7 Flow chart of calculating real-time air supply volume provided by an embodiment of the present application;

[0041] Figure 8 Flow chart of calculating cumulative heating and cooling capacity provided by an embodiment of the present application;

[0042] Figure 9 Flow chart of storing data and reporting data provided by an embodiment of the present application;

[0043] Figure 10 Schematic diagram of the connection structure of the controller provided by an embodiment of the present application. Detailed implementation manners

[0044] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are necessary sequences unless otherwise stated that a certain sequence must be followed.

[0045] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0046] The serial numbers assigned to components in this text, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connection" and "coupling" as used in this application, unless otherwise specified, both include direct and indirect connection (coupling).

[0047] Referring to Figure 1 As shown, the outdoor unit of a multi-split air conditioning system is usually paired with multiple indoor units. The outdoor unit is connected to the indoor units through refrigerant pipes. The outdoor unit collects the indoor environment and set parameters of each indoor unit, etc., and overall sets the operating frequency of the compressor and adjusts the refrigerant distribution method, so as to meet the different needs of users faced by each indoor unit. Therefore, currently, most multi-split air conditioning systems operate by being powered by the outdoor unit. The operating conditions of the indoor units are controlled by the outdoor unit, and it is not easy for the indoor units to reflect their own operating conditions to the users themselves.

[0048] Some regions encourage air conditioners to provide users with the operating conditions of the indoor units to remind users to plan the operation of the air conditioners; in the common one-to-one air conditioning system, since the indoor unit is powered and the relationship between the outdoor unit and the indoor unit is one-to-one, it is easy to directly reflect the operating conditions of the indoor unit in the electronic control program. However, for a multi-split air conditioning system, the outdoor unit needs to consider issues such as refrigerant distribution for each indoor unit, and it is much more complex to implement in the electronic control program, and the data provided is not accurate enough. Therefore, currently, in a multi-split air conditioning system, each indoor unit cannot display its cooling capacity and heating capacity when it is working.

[0049] The following will describe the display method of cooling and heating capacities, the controller, and the multi-split air conditioning system with reference to the accompanying drawings.

[0050] Referring to Figure 2 As shown Figure 2 is the overall flowchart of the display method of cooling and heating capacities provided by an embodiment of the present application. The display method of cooling and heating capacities is applied to a multi-split air conditioning system, and the multi-split air conditioning system includes multiple indoor units; the display method includes but is not limited to the following steps:

[0051] Step S110, obtaining the evaporator temperature and the indoor temperature;

[0052] Step S120, compensating the evaporator temperature according to the operating mode of the indoor unit; the operating mode includes a cooling mode and a heating mode;

[0053] Step S130, determining the real-time cooling and heating capacities according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature;

[0054] Step S140, determining the cumulative cooling and heating capacities according to the real-time cooling and heating capacities, and displaying the cumulative cooling and heating capacities through a display terminal.

[0055] The indoor unit of the multi-connected system obtains the necessary operating parameters from the outdoor unit through communication, then calculates and determines the real-time cooling and heating capacities inside the indoor unit, accumulates the real-time cooling and heating capacities over time to obtain the cumulative cooling and heating capacities, and displays the cumulative cooling and heating capacities to the user through a display terminal.

[0056] During the actual operation process, it is necessary to distinguish between the cooling mode and the heating mode (the cooling mode of this application can be further refined into a set cooling mode, an automatic cooling mode, a dehumidification mode, etc., and the heating mode can be further refined into a set heating mode, an automatic heating mode, a defrosting operation mode, etc.), and calculate the real-time cooling capacity and the real-time heating capacity respectively. In the cooling mode, the evaporator is the heat exchanger of the indoor unit. The indoor unit obtains the temperature of the evaporator and the indoor temperature, as well as the operating frequency of the compressor from the outdoor unit. Then, after compensating the evaporator temperature, the real-time cooling capacity is determined by combining the indoor temperature and the operating frequency of the compressor, and further the cumulative cooling capacity is obtained and displayed; in the heating mode, the evaporator is the heat exchanger of the outdoor unit. The indoor unit obtains the indoor temperature, as well as the temperature of the evaporator and the operating frequency of the compressor from the outdoor unit. Then, after compensating the evaporator temperature, the real-time heating capacity is determined by combining the indoor temperature and the operating frequency of the compressor, and further the cumulative heating capacity is obtained and displayed.

[0057] Among them, the display terminal can be the display component of the indoor unit or the user's intelligent terminal, such as an air conditioner remote control, a mobile phone, etc. When the display terminal is the display component of the indoor unit or the air conditioner remote control, the display component can display the value of the cumulative cooling capacity or the heating capacity in the form of LED digital display on the screen. When the display terminal is an intelligent terminal, the value of the cumulative cooling capacity or the heating capacity is displayed in the installed app, etc.

[0058] Since the calculation of the cooling capacity in the cooling mode is different from the calculation of the heating capacity in the heating mode, the calculations in the two operating modes will be described separately below.

[0059] Refer to Figure 3 As shown, the operating mode of the indoor unit is the heating mode:

[0060] Compensating the evaporator temperature according to the operating mode of the indoor unit in step S120 above includes:

[0061] Step S210, compensating the evaporator temperature according to a preset first correction coefficient to obtain a first temperature value;

[0062] Step S220, compensating the exhaust temperature of the compressor according to a preset second correction coefficient to obtain a second temperature value.

[0063] In the heating mode, it is also necessary to obtain the exhaust temperature of the compressor through the outdoor unit and compensate the exhaust temperature of the compressor. Among them, the evaporator temperature is compensated by the first correction coefficient, and the exhaust temperature is compensated by the second correction coefficient. The first correction coefficient and the second correction coefficient can be fixed temperature coefficients. For example, both the first correction coefficient and the second correction coefficient can be coefficients greater than 1. The compensation method can be to increase the evaporator temperature according to the first correction coefficient and increase the exhaust temperature according to the second correction coefficient; the first correction coefficient and the second correction coefficient can also be selected from a temperature range. For example, the optional range of the first correction coefficient is from 1°C to 7°C, and the optional range of the second correction coefficient is from 3°C to 6°C. The compensation method can be to superimpose the first correction coefficient on the basis of the evaporator temperature and superimpose the second correction coefficient on the basis of the exhaust temperature. The first temperature and the second temperature obtained after compensation are used for subsequent calculation of the heating capacity based on the Newton cooling formula.

[0064] Refer to Figure 4 As shown, in the above step S130, determining the real-time cooling heating capacity according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature includes:

[0065] Step S310, determining the sum of the product of the first temperature value and the first distribution coefficient and the product of the second temperature value and the second distribution coefficient to obtain a third temperature value; the sum of the first distribution coefficient and the second distribution coefficient is equal to 1;

[0066] Step S320, determining the real-time heating capacity according to the preset third correction coefficient, the third temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit; the third correction coefficient corresponds to the model of the indoor unit.

[0067] When calculating the heating capacity based on the Newton cooling formula, since there is only one temperature (or a temperature difference) in the formula, in the embodiments of the present application, the first temperature value and the second temperature value are adjusted according to a certain distribution ratio, and then the difference is taken with the indoor temperature. Specifically, the first temperature value is multiplied by the first distribution coefficient, and the second temperature value is multiplied by the second distribution coefficient, and the sum of the two products is used as a temperature, and the difference is taken with the indoor temperature. Then, based on the temperature difference, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit, the heat change is calculated based on the Newton cooling formula, and the heat change is adjusted by the third correction coefficient to obtain the final real-time heating capacity.

[0068] The calculation of the real-time heating capacity can refer to the following formula:

[0069] Q1 = K3 * C * p * V * (a1 * T2^ + a2 * Tp^ - T1) * 1000

[0070] Among them, the first distribution coefficient a1 and the second distribution coefficient a2 can determine specific values according to the actual situation. T2^ is the compensated evaporator temperature, that is, the first temperature value, Tp^ is the compensated exhaust temperature, that is, the second temperature value, C represents the specific heat capacity at constant pressure, p is the air density, V is the real-time air supply volume, and K3 is the third correction coefficient. In some cases, the first temperature value T2^ = T2 + T2HeatSup can be calculated, and the second temperature value Tp^ = Tp + TpHeatSup can be calculated. T2 is the evaporator temperature, T2HeatSup is the first correction coefficient, Tp is the exhaust temperature, and TpHeatSup is the second correction coefficient.

[0071] Refer to Figure 5 As shown, the operating mode of the indoor unit is the heating mode:

[0072] In the above step S120, compensating the evaporator temperature according to the operating mode of the indoor unit includes:

[0073] Step S410, compensating the evaporator temperature according to the preset fourth correction coefficient and the operating frequency of the compressor to obtain the fourth temperature value.

[0074] In the cooling mode, it is also necessary to obtain the operating frequency of the compressor through the outdoor unit, and the evaporator temperature is compensated by the fourth correction coefficient and the operating frequency of the compressor. The fourth correction coefficient can be a fixed temperature coefficient or can be taken from a temperature range. For example, the fourth correction coefficient can be a coefficient greater than 1. The compensation method can be that after calculating a correction value based on the operating frequency of the compressor and the fourth correction coefficient, the evaporator temperature is reduced according to the correction value. The compensated fourth temperature is used for subsequent calculation of the cooling capacity based on the Newton cooling formula. For example, the correction of the evaporator temperature in the cooling mode can refer to the following formula:

[0075] T2^^ = T2 - K4 * ((b1 * Fr - b2) / 1000)

[0076] Among them, both b1 and b2 are preset constants for adjusting data, and specific values can be determined according to the actual situation. Fr is the operating frequency of the compressor, and K4 is the fourth correction coefficient.

[0077] Refer to Figure 6 As shown, in the above step S130, determining the real-time cooling and heating capacity according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature includes:

[0078] Step 510, if the difference between the indoor temperature and the fourth temperature value is greater than the preset temperature threshold, determining the real-time cooling capacity according to the preset fifth correction coefficient, the difference between the indoor temperature and the fourth temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit;

[0079] The step is 520. If the difference between the indoor temperature and the fourth temperature value is less than the preset temperature threshold, determine the real-time cooling capacity according to the preset sixth correction coefficient, the difference between the indoor temperature and the fourth temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit.

[0080] Among them, the fifth correction coefficient and the sixth correction coefficient correspond to the model of the indoor unit.

[0081] Under the cooling mode, calculate the real-time cooling capacity in two cases, distinguished by whether the difference between the indoor temperature and the fourth temperature value is greater than the preset temperature threshold:

[0082] When the difference between the indoor temperature and the fourth temperature value is greater than the preset temperature threshold, calculate the cooling capacity based on Newton's cooling formula. After subtracting the fourth temperature from the indoor temperature, calculate the heat change based on Newton's cooling formula according to this temperature difference, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit, and further adjust this heat change through this temperature difference, the real-time air supply volume, and the fifth correction coefficient to obtain the final real-time cooling capacity.

[0083] The calculation of the real-time cooling capacity can refer to the following formula:

[0084] Q2 = K5 * (1 - c1(T1 - T2^^ - 24)) * (1 - c2 * V + c3) * C * p * V * (T1 - T2^^) * 1000

[0085] Among them, c1, c2, and c3 are all preset constants used to adjust the data, and the specific values can be determined according to the actual situation; T2^^ is the compensated evaporator temperature, that is, the fourth temperature value, C represents the specific heat capacity at constant pressure, p is the air density, V is the real-time air supply volume, and K5 is the fifth correction coefficient.

[0086] When the difference between the indoor temperature and the fourth temperature value is less than the preset temperature threshold, calculate the cooling capacity based on Newton's cooling formula. After subtracting the fourth temperature from the indoor temperature, calculate the heat change based on Newton's cooling formula according to this temperature difference, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit, and further adjust this heat change through the real-time air supply volume and the sixth correction coefficient to obtain the final real-time cooling capacity.

[0087] The calculation of the real-time cooling capacity can refer to the following formula:

[0088] Q3 = K6 * (1 - d1 * V + d2) * C * p * V(T1 - T2^^) * 1000

[0089] Wherein, d1 and d2 are both preset constants used to adjust the data, and their specific values can be determined according to actual conditions; T2^^ is the compensated evaporator temperature, that is, the fourth temperature value, C represents the constant pressure specific heat capacity, p is the air density, V is the real-time air supply volume, and K6 is the sixth correction coefficient.

[0090] Reference Figure 7 As shown, in some embodiments, the real-time air supply volume is determined by:

[0091] Step S610, obtaining the real-time speed of the indoor fan;

[0092] Step S620, determine the real-time supply air volume based on the real-time speed, the preset strong wind speed and the preset strong wind volume; the strong wind speed represents the fan speed corresponding to the strong wind gear of the indoor fan, and the strong wind volume represents the supply air volume corresponding to the strong wind gear of the indoor fan.

[0093] The real-time air supply volume cannot be measured directly. Even if it is measured, it usually requires the installation of new hardware to indirectly measure and then estimate the air volume. In the case that the hardware of the current air conditioner remains unchanged, the embodiment of the present application uses the correspondence between the strong wind volume and the strong wind speed to calculate the real-time air supply volume without the need to install additional measurement hardware. Specifically, the correspondence between the strong wind speed and the strong wind volume is preset in the indoor unit, and then the real-time speed of the indoor fan is obtained, and the real-time air supply volume corresponding to the real-time speed is determined based on this correspondence. For example, the real-time air supply volume can be determined by referring to the following calculation formula:

[0094] V=(B / A)*Vol

[0095] Where B is the actual speed of the current indoor fan, A is the high-speed speed, and Vol is the high-speed air volume.

[0096] Reference Figure 8 As shown, in some embodiments, determining the cumulative cooling and heating amount according to the real-time cooling and heating amount in step S140 includes:

[0097] Step S710, calculating and obtaining a real-time cooling and heating amount at every first time interval;

[0098] Step S720: Time-integrate the real-time cooling and heating amount to obtain the cumulative cooling and heating amount.

[0099] The indoor unit calculates the real-time cooling capacity or real-time heating capacity according to the first time interval in its internal program. For example, the real-time cooling capacity or real-time heating capacity is calculated once per minute. Then, according to the above first time interval, time integration is performed on the calculated real-time cooling capacity or real-time heating capacity to obtain the cumulative cooling capacity or cumulative heating capacity. Time integration is applicable to the situation where the indoor unit continuously operates in the same operating mode. If the operating mode of the indoor unit switches or the compressor starts after a long shutdown time, the indoor unit can restart timing and recalculate the cumulative cooling and heating capacities.

[0100] In some embodiments, if the display terminal is the display component of the indoor unit and the indoor unit includes multiple storage sectors; then refer to Figure 9 As shown, the step of displaying the cumulative cooling and heating capacities through the display terminal in the above step S140 includes:

[0101] Step S810, write the cumulative cooling and heating capacities into an unwritten storage sector in sequence according to the storage sectors;

[0102] Step S820, report several recently written cumulative cooling and heating capacities to the outdoor unit of the multi-connected air-conditioning system every second time interval.

[0103] The built-in storage chip of the indoor unit divides multiple storage sectors for storing the calculated cumulative cooling and heating capacities. The storage sectors are written in a preset order. After each storage sector is full, the next storage sector is selected for writing. Therefore, the cumulative cooling and heating capacities are each written into an unwritten storage sector currently. The second time interval is usually longer than the first time interval. After storing multiple cumulative cooling and heating capacities through the storage sectors, the indoor unit reports multiple cumulative cooling and heating capacities to the outdoor unit at one time. For example, if the first time interval is 1 minute and the second time interval is 15 minutes, the indoor unit obtains 15 cumulative cooling and heating capacities every 15 minutes. When it reaches the reporting time, the indoor unit can report 15 or less than 15 (for example, removing some outliers, or only reporting the values in the most recent 5 minutes) cumulative cooling and heating capacities.

[0104] It can be understood that after all the multiple storage sectors are full, the data is cleared back to the first storage sector. At this time, the first storage sector is the unwritten storage sector currently, and so on.

[0105] In summary, in the multi-connected air-conditioning system, the indoor unit detects the evaporator temperature, indoor temperature and obtains the operating frequency of the compressor, and then compensates the evaporator temperature according to the current operating mode of the indoor unit. The real-time cooling and heating capacities are calculated using the compensated evaporator temperature, which can improve the accuracy of the real-time cooling and heating capacities. And the cumulative cooling and heating capacities are calculated according to the real-time cooling and heating capacities, and the cumulative cooling and heating capacities are displayed through the display terminal, which is convenient for users to know the cooling and heating levels of the indoor unit and helps to encourage users to save energy actively.

[0106] The display method of the refrigeration and heating capacity of the present application will be described in detail below through a specific example.

[0107] By testing the air volume corresponding to the indoor unit model under strong wind, it is determined that the fan speed of the strong wind is A revolutions per minute, and the corresponding air volume is Vol (m 3 / s). The indoor unit also sets the first correction coefficient T2HeatSup, the second correction coefficient TpHeatSup, the third correction coefficient K3, the fourth correction coefficient K4, the fifth correction coefficient K5, the sixth correction coefficient K6, etc. through methods such as EEPROM, and can also set the constant pressure specific heat capacity C and the air density p; during the actual operation process, the indoor unit obtains the evaporator temperature T2, the exhaust temperature Tp of the compressor, and the operating frequency Fr.

[0108] When the actual operation mode is the heating mode:

[0109] T2^ = T2 + T2HeatSup

[0110] Tp^ = Tp + TpHeatSup

[0111] Calculate the real-time heating capacity:

[0112] Q1 = K3 * C * p * V * (a1 * T2^ + a2 * Tp^ - T1) * 1000 (unit: W)

[0113] When the actual operation mode is the cooling mode:

[0114] T2^^ = T2 - K4 * ((b1 * Fr - b2) / 1000)

[0115] Calculate the real-time cooling capacity:

[0116] When T1 - T2^^ ≥ 25 °C,

[0117] Q2 = K5 * (1 - c1(T1 - T2^^ - 24)) * (1 - c2 * V + c3) * C * p * V * (T1 - T2^^) * 1000

[0118] When T1 - T2^^ < 25 °C,

[0119] Q3 = K6 * (1 - d1 * V + d2) * C * p * V(T1 - T2^^) * 1000

[0120] Among them, the real-time air supply volume V = (B / A) * Vol

[0121] The display mode of the indoor unit is as follows: when the compressor is turned off, the cooling capacity or heating capacity is displayed as 0; when the compressor starts, according to the current actual operating mode, the current real-time cooling and heating capacity is calculated every minute according to the above calculation method, and the cumulative cooling and heating capacity is calculated by integrating according to the time interval, and the cumulative cooling and heating capacity is displayed, and the cumulative cooling and heating capacity is reported once every 15 minutes.

[0122] In addition, multiple sectors are set in the flash chip of the indoor unit for sequential use, and after one sector is written full, the next sector is written.

[0123] As Figure 10 shown, Figure 10 is a schematic diagram of the controller 1000 provided by an embodiment of the present application.

[0124] The controller 1000 of the embodiment of the present application includes one or more processors 1001 and a memory 1002. Figure 10 Here, one processor 1001 and one memory 1002 are taken as examples.

[0125] The processor 1001 and the memory 1002 can be connected through a bus or other means. Figure 10 Here, connection through a bus is taken as an example.

[0126] The memory 1002, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory 1002 can include high-speed random access memory, and can also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory 1002 optionally includes a memory 1002 remotely arranged relative to the processor 1001, and these remote memories can be connected to the controller 1000 through a network. Examples of the above networks include but are not limited to the Internet, enterprise intranets, local area networks, mobile communication networks, and combinations thereof.

[0127] Those skilled in the art can understand that Figure 10 the device structure shown in

[0128] does not limit the controller 1000, and may include more or fewer components than shown in the figure, or combine some components, or arrange different components.

[0129] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed to multiple network nodes. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0130] Those of ordinary skill in the art can understand that all or some of the steps and systems disclosed in the above methods can be implemented as software, firmware, hardware, and their appropriate combinations. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, a communication medium typically includes computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0131] It should be understood that in this application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects and indicates that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally means that the associated objects before and after are in an "or" relationship. "At least one (one) of the following" or its similar expression refers to any combination of these items, including any combination of single item (one) or plural items (ones). For example, at least one (one) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0132] In several embodiments provided by the present application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of apparatuses or units can be in electrical, mechanical, or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0133] It should also be understood that the various embodiments provided by the embodiments of the present application can be combined arbitrarily to achieve different technical effects.

[0134] The above is a specific description of the preferred embodiments of the present application, but the present application is not limited to the above embodiments. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present application, and these equivalent deformations or substitutions are all included within the scope defined by the claims of the present application.

Claims

1. A method for displaying refrigerating and heating capacities, characterized in that Applied to a multi-connected air-conditioning system, the multi-connected air-conditioning system including multiple indoor units; the display method includes: Obtain the evaporator temperature and the indoor temperature; Compensate the evaporator temperature according to the operating mode of the indoor unit; the operating mode includes a cooling mode and a heating mode; Determine the real-time cooling and heating capacity according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature; Determine the cumulative cooling and heating capacity according to the real-time cooling and heating capacity, and display the cumulative cooling and heating capacity through a display terminal.

2. The method according to claim 1, wherein The operating mode of the indoor unit is the heating mode; the compensating the evaporator temperature according to the operating mode of the indoor unit includes: Compensate the evaporator temperature according to a preset first correction coefficient to obtain a first temperature value; Compensate the exhaust temperature of the compressor according to a preset second correction coefficient to obtain a second temperature value.

3. The method according to claim 2, characterized in that, The determining the real-time cooling and heating capacity according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature includes: Determine the sum of the product of the first temperature value and the first distribution coefficient and the product of the second temperature value and the second distribution coefficient to obtain a third temperature value; the sum of the first distribution coefficient and the second distribution coefficient is equal to 1; Determine the real-time heating capacity according to a preset third correction coefficient, the third temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit; the third correction coefficient corresponds to the model of the indoor unit.

4. The method according to claim 1, wherein The operating mode of the indoor unit is the cooling mode; the compensating the evaporator temperature according to the operating mode of the indoor unit includes: Compensate the evaporator temperature according to a preset fourth correction coefficient and the operating frequency of the compressor to obtain a fourth temperature value.

5. The method according to claim 4, wherein The determining the real-time cooling and heating capacity according to the indoor temperature, the operating frequency of the compressor, and the compensated evaporator temperature includes: If the difference between the indoor temperature and the fourth temperature value is greater than a preset temperature threshold, determine the real-time cooling capacity according to a preset fifth correction coefficient, the difference between the indoor temperature and the fourth temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit; If the difference between the indoor temperature and the fourth temperature value is less than a preset temperature threshold, determine the real-time cooling capacity according to a preset sixth correction coefficient, the difference between the indoor temperature and the fourth temperature value, the specific heat capacity at constant pressure, the air density, and the real-time air supply volume of the indoor unit; Wherein, the fifth correction coefficient and the sixth correction coefficient correspond to the model of the indoor unit.

6. The method according to claim 3 or 5, characterized in that, The real-time air supply volume is determined by the following method: Obtain the real-time rotation speed of the indoor fan; Determine the real-time air supply volume according to the real-time rotation speed, a preset strong wind rotation speed, and a preset strong wind air volume; the strong wind rotation speed represents the rotation speed of the indoor fan corresponding to the strong wind gear, and the strong wind air volume represents the air supply volume of the indoor fan corresponding to the strong wind gear.

7. The method according to claim 1, characterized in that The determining the cumulative cooling and heating capacity according to the real-time cooling and heating capacity includes: Calculate a real-time cooling and heating capacity every first time interval; Perform time integration on the real-time cooling and heating capacity to obtain the cumulative cooling and heating capacity.

8. The method according to claim 1, characterized in that, The display terminal is a display component of the indoor unit, and the indoor unit includes a plurality of storage sectors; the step of displaying the cumulative cooling and heating capacity through the display terminal includes: Writing the cumulative cooling and heating capacity into one storage sector that is not yet full according to the order of the storage sectors; Reporting a plurality of the most recently written cumulative cooling and heating capacities to the outdoor unit of the multi-connected air-conditioning system at every second time interval.

9. A controller, characterized in that, It includes at least one processor and a memory for communicatively connecting with the at least one processor; The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the display method according to any one of claims 1 to 8.

10. A multi-connected air-conditioning system, including the controller according to claim 9.

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