A controllable temperature decorative wall heating system based on direct drive of air conditioner outdoor unit

Abstract

This invention relates to the field of heating control technology and discloses a controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit. The system includes: a data acquisition module for acquiring indoor temperature, target indoor temperature, heat source side temperature, air conditioner outdoor unit output setting, and wall temperature sequence, and retrieving a vertical thermal response reference; a temperature processing module for determining the target temperature range and early convergence temperature of the decorative wall; a heating judgment module for judging insufficient bottom response, lag in upward heat transfer, and early convergence; and a control generation module for generating heating control results. This invention, by combining a high-temperature pressurization pipe driven by the air conditioner unit within a liquid tank at the bottom of the wall to keep the vertical decorative wall in a heated state and adjusting the air conditioner outdoor unit output based on historical thermal response references, reduces problems such as insufficient localized temperature rise, temperature overshoot, and frequent setting adjustments in decorative wall heating, thereby improving the timeliness and stability of heating regulation.

Description

Technical Field

[0001] This invention relates to the field of heating control technology, and more specifically, to a controllable temperature decorative wall heating system based on direct drive from an air conditioner outdoor unit. Background Technology

[0002] Building indoor heating typically includes various terminal forms such as supply air heat exchange, fan coil unit heat exchange, and radiant terminal heat exchange. Heat sources can include air conditioning units, air source heat pumps, or hot water units. Air conditioning supply air and fan coil units primarily circulate air through indoor heat exchangers and fans to increase indoor air temperature. Radiant terminal heating, on the other hand, involves installing radiant panels, radiant pipes, or heat dissipation surfaces indoors, releasing heat into the room through radiant heat exchange and natural convection. Compared to supply air heating, radiant terminal heating results in less indoor airflow disturbance and a relatively calmer indoor thermal environment, and is therefore already used in residential, office, and public building heating.

[0003] For example, CN119492098A discloses a radiant air conditioning system, which includes a radiant air conditioning panel, an indoor heat exchanger, a compressor, an outdoor heat exchanger, and an indoor temperature detection device. The system adjusts the operation of the radiant air conditioning panel and the indoor heat exchanger based on the unit's operating status and the indoor temperature difference. This system can achieve combined heating between radiant terminals and air conditioning equipment, but its control process mainly revolves around indoor air temperature and unit operating parameters.

[0004] For indoor heating terminals such as walls and panels with a certain area and heat storage capacity, the transmission of heat source output changes to terminal surface temperature changes is usually delayed. If the control process is still mainly based on indoor temperature difference or the operating status of heat source equipment, situations may arise where the terminal surface continues to heat up after the heat source has been lowered, the terminal surface temperature does not drop in time, and the temperature fluctuation range increases. For wall-mounted heating terminals, after heat is input from the bottom area, there may be a time difference in the heating process of different height areas, which may result in the lower area heating up while the upper area responds with a lag, and may cause frequent adjustments to the operating status of the heat source equipment.

[0005] Therefore, it is necessary to design a temperature-controlled decorative wall heating system based on direct drive of an air conditioner outdoor unit to solve the problems existing in the current technology. Summary of the Invention

[0006] In view of this, the present invention proposes a controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit, which aims to solve the problem that in the process of adjusting the heat source output of existing indoor heating terminals, the change of terminal surface temperature lags behind the change of heat source output, which easily causes terminal surface temperature overshoot, increased temperature fluctuation range, and frequent adjustment of the operating status of heat source equipment.

[0007] This invention proposes a controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit, comprising: The data acquisition module is used to acquire indoor temperature, indoor target temperature, heat source side temperature, air conditioner outdoor unit output level and wall temperature sequence, and retrieve the vertical thermal response benchmark obtained from historical qualified heating cycles. The temperature processing module is used to determine the target temperature range of the decorative wall based on the temperature difference between the indoor temperature and the indoor target temperature, and to determine the early convergence temperature based on the vertical thermal response reference and the wall temperature sequence, wherein the early convergence temperature is lower than the upper limit of the target temperature range of the decorative wall. The heat determination module is used to determine the current vertical heating state of the decorative wall in each control cycle based on the heat source side temperature, the air conditioner outdoor unit output setting, and the wall temperature sequence. When the heat source side temperature rises, if the lowest temperature measurement position in the wall temperature sequence does not generate an effective temperature rise within the bottom response time, it is determined to be a bottom response insufficiency state. When the lower temperature measurement position has generated an effective temperature rise but the adjacent upper temperature measurement position has not generated an effective temperature rise within the adjacent heat transfer allowable time, it is determined to be an upward heat transfer lag state. When the temperature measurement position in the wall temperature sequence that has generated an effective temperature rise reaches the early convergence temperature, it is determined to be an early convergence state. The control generation module is used to generate heating control results based on the current vertical heating state.

[0008] Furthermore, when obtaining the wall temperature sequence, it includes: Within the same sampling period, the wall surface temperature is collected at at least three temperature measurement positions arranged from bottom to top along the height direction of the decorative wall, and the wall surface temperature sequence is obtained according to the arrangement order of each temperature measurement position from the bottom to the top of the decorative wall. In two adjacent temperature measurement positions, the temperature measurement position closer to the bottom of the decorative wall is designated as the lower temperature measurement position, and the temperature measurement position closer to the top of the decorative wall is designated as the adjacent upper temperature measurement position.

[0009] Furthermore, before retrieving the vertical thermal response reference, the following steps are taken: Read the heat source side temperature, air conditioner outdoor unit output setting, and wall temperature sequence from historical qualified heating cycles; The effective temperature rise range is obtained based on the temperature fluctuation range of the wall surface temperature sequence before heating. The bottom response time is obtained by taking the time it takes for the lowest temperature measurement position to generate an effective temperature rise after the temperature on the heat source side begins to rise. Based on the time required for an effective temperature rise to occur at the adjacent upper temperature measurement position after the lower temperature measurement position has an effective temperature rise, the allowable heat transfer time between adjacent temperature measurement positions in each group is obtained. The baseline continuous temperature rise is obtained by taking into account the continued temperature rise of the measured positions on the wall after the outdoor unit of the air conditioner has reduced its output setting.

[0010] Furthermore, when determining the target temperature range for the decorative wall, the following factors are considered: The indoor temperature difference level is determined based on the difference between the indoor temperature and the target indoor temperature. Read the target center temperature and allowable temperature deviation of the wall surface that match the indoor temperature difference level; The target temperature range of the decorative wall is determined based on the target center temperature of the wall surface and the allowable temperature deviation.

[0011] Furthermore, determining the early convergence temperature includes: Based on the temperature change of each temperature measurement location that has generated an effective temperature rise in the wall temperature sequence within adjacent sampling periods, the surface heating rate of each temperature measurement location is obtained. Take the maximum surface heating rate among the surface heating rates at each temperature measurement location as the current surface heating rate; The early convergence deduction is determined based on the baseline sustained temperature rise and the current surface temperature rise rate. The early convergence temperature is obtained by subtracting the early convergence deduction from the upper limit of the target temperature range of the decorative wall.

[0012] Furthermore, determining whether an effective temperature rise occurs at the temperature measurement location includes: The lowest temperature measurement location is based on the temperature at which the temperature on the heat source side begins to rise, serving as the bottom temperature rise reference. For any temperature measurement position other than the lowest temperature measurement position, the temperature measurement position adjacent to and below it is taken as the lower temperature measurement position, and the current temperature of the temperature measurement position at the moment when the lower temperature measurement position generates an effective temperature rise is taken as the upward temperature rise reference. When the temperature rise at the temperature measurement location relative to the corresponding temperature rise reference reaches the effective temperature rise range, and the wall temperature in two consecutive sampling cycles is not lower than the wall temperature when the effective temperature rise range is reached, it is determined that the temperature measurement location has generated an effective temperature rise.

[0013] Furthermore, when determining a state of insufficient bottom response, the following are included: When the outdoor unit of the air conditioner increases its output level and the temperature on the heat source side begins to rise, the bottom response timer is activated. If the lowest temperature measurement position does not generate an effective temperature rise within the bottom response time, the decorative wall is determined to be in a state of insufficient bottom response. If the lowest temperature measurement position generates an effective temperature rise within the bottom response time, then the heat transfer timing between the lowest temperature measurement position and the adjacent upper temperature measurement position will be started.

[0014] Furthermore, determining the upward heat transfer lag state includes: Timing is recorded from the moment an effective temperature rise occurs at the lower temperature measurement position, between the lower temperature measurement position and the adjacent upper temperature measurement position. If the adjacent upper temperature measurement position does not generate an effective temperature rise within the adjacent heat transfer allowable time, the decorative wall is determined to be in an upward heat transfer lag state. If the adjacent temperature measurement position above generates an effective temperature rise within the adjacent heat transfer allowable time, and there is a next set of adjacent temperature measurement positions, then the heat transfer timing is started for the next set of adjacent temperature measurement positions.

[0015] Furthermore, determining the early convergence state includes: When any temperature measurement point in the wall temperature sequence that has generated an effective temperature rise reaches the early convergence temperature, the decorative wall is determined to be in an early convergence state. When the early convergence state and the upward heat transfer lag state are established in the same sampling period, the decorative wall is determined to be in a vertical temperature difference constraint state.

[0016] Furthermore, when generating heating control results, the following are included: In the case of insufficient response at the bottom, if the outdoor unit of the air conditioner is not at the highest output level, the output level will be increased by one level; if the outdoor unit of the air conditioner is at the highest output level, the highest output level will be maintained. Under the condition of upward heat transfer lag, maintain the current output level and prohibit upgrading; Under vertical temperature difference constraints, maintain the current output level and prohibit upgrading; In the early convergence state, if the outdoor unit of the air conditioner is not at the lowest output level, the output level will be reduced by one level; if the outdoor unit of the air conditioner is at the lowest output level, the lowest output level will be maintained. When the conditions of insufficient bottom response, lag in upward heat transfer, vertical temperature difference constraint, and premature convergence are not met, if the highest temperature in the wall temperature sequence is lower than the lower limit of the target temperature range of the decorative wall, the output level is increased; if the lowest temperature in the wall temperature sequence is higher than the upper limit of the target temperature range of the decorative wall, the output level is decreased; otherwise, the current output level is maintained. After generating the heating control result of upshifting or downshifting, no new upshifting or downshifting result is generated within the gear holding cycle, which includes at least two control cycles.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: By acquiring indoor temperature, target indoor temperature, heat source side temperature, air conditioner outdoor unit output setting, and wall temperature sequence, and combining this with the vertical thermal response benchmark obtained from historical qualified heating cycles, the target temperature range and early convergence temperature of the decorative wall are determined. This allows heating control to no longer be adjusted solely based on indoor temperature or the operating status of the air conditioner outdoor unit, but rather to be judged in conjunction with the vertical heating changes of the decorative wall itself. By judging the insufficient bottom response, lag in upward heat transfer, and early convergence state within each control cycle, it is possible to distinguish different situations where the heat source side has already heated up but the bottom of the wall has not yet responded effectively, the lower area has already heated up but the adjacent upper area is not following suit, and the heated area is approaching the risk of subsequent overshoot. By generating heating control results based on the current vertical heating state, it is beneficial to reduce the problems of insufficient local heating, temperature overshoot, increased wall temperature fluctuations, and frequent adjustments of the air conditioner outdoor unit caused by the asynchronous changes in heat source output and wall temperature during the heating process of the decorative wall.

[0018] It is understandable that the aforementioned controllable temperature decorative wall heating system based on direct drive of air conditioner outdoor unit has the same beneficial effects, and will not be elaborated further here. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A functional block diagram of a controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit provided in an embodiment of the present invention; Figure 2 A flowchart for determining the effective temperature rise provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection between the decorative wall and the bottom groove provided in an embodiment of the present invention; Figure 4 This is a schematic diagram showing the connection between the outdoor air conditioning unit and the base trough provided in an embodiment of the present invention; Figure 5 A schematic diagram showing the positions of the decorative wall, the heat insulation board, and the building wall entities provided in an embodiment of the present invention; Figure 6 A bottom view of a decorative wall provided in an embodiment of the present invention.

[0020] Among them, 1. bottom tank; 2. decorative wall; 21. liquid storage tank; 3. heating pipe; 4. pressurization pipe; 5. heat insulation board; 6. solid wall of the house; 7. outdoor air conditioning unit; 8. air conditioning unit pressurization pipe interface. Detailed Implementation

[0021] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] In some embodiments of this application, see Figure 1-2 As shown, this application proposes a controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit, comprising: The data acquisition module is used to acquire indoor temperature, indoor target temperature, heat source side temperature, air conditioner outdoor unit output level and wall temperature sequence, and retrieve the vertical thermal response benchmark obtained from historical qualified heating cycles. The temperature processing module is used to determine the target temperature range of the decorative wall based on the temperature difference between the indoor temperature and the indoor target temperature, and to determine the early convergence temperature based on the vertical thermal response reference and the wall temperature sequence. The early convergence temperature is lower than the upper limit of the target temperature range of the decorative wall. The heat determination module is used to determine the current vertical heating status of the decorative wall in each control cycle based on the heat source side temperature, the air conditioner outdoor unit output setting, and the wall surface temperature sequence. When the heat source side temperature rises, if the lowest temperature measurement position in the wall surface temperature sequence does not generate an effective temperature rise within the bottom response time, it is determined to be a bottom response insufficiency state. When the lower temperature measurement position has generated an effective temperature rise but the adjacent upper temperature measurement position has not generated an effective temperature rise within the adjacent heat transfer allowable time, it is determined to be an upward heat transfer lag state. When the temperature measurement position in the wall surface temperature sequence that has generated an effective temperature rise reaches the early convergence temperature, it is determined to be an early convergence state. The control generation module is used to generate heating control results based on the current vertical heating status.

[0023] See Figure 3-6As shown, a controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit may include a base trough 1, a decorative wall 2, a liquid storage tank 21, a heating pipe 3, a pressurization pipe 4, a heat insulation board 5, a building wall entity 6, an outdoor air conditioner unit 7, an air conditioner unit pressurization pipe interface 8, an indoor temperature sensor, a heat source side temperature sensor, a wall surface temperature sensor group, and a processor. The base trough 1 is located at the bottom of the building wall entity 6 and can be arranged around it along the extension direction of the building wall entity 6 to form the heat input area at the bottom of the decorative wall 2. The decorative wall 2 is sealed and installed on the base trough 1, serving as both the decorative surface facing the room and the heating surface. The liquid storage tank 21 is located inside the decorative wall 2 and communicates with the base trough 1. The base trough 1 and the liquid storage tank 21 together contain the heat-conducting liquid, and the working liquid level of the heat-conducting liquid is higher than that of the base trough 1 and extends to a set height within the liquid storage tank 21.

[0024] Heating pipe 3 is installed in the bottom tank 1 and can be laid along the extension direction of the building wall 6 along the bottom tank 1 to heat the heat-conducting liquid in the bottom tank 1. One end of the pressurization pipe 4 is connected to the heating pipe 3, and the other end is connected to the pressurization pipe interface 8 of the air conditioning unit, which is used to introduce the heating medium provided by the outdoor air conditioning unit 7 into the heating pipe 3. After the heat-conducting liquid is heated, natural convection is formed in the area below the working liquid level of the bottom tank 1 and the liquid storage tank 21, so that the heat is transferred to the metal wall surface of the decorative wall 2 located below the working liquid level. The area of ​​the decorative wall 2 above the working liquid level does not directly exchange heat with the heat-conducting liquid. The heat is mainly conducted upward along the metal plate of the decorative wall 2 and released into the room through natural convection and radiation on the surface of the decorative wall 2 facing the room.

[0025] The heat insulation board 5 is installed between the decorative wall 2 and the building wall 6 to reduce heat loss to the building wall 6. By limiting the working liquid level of the heat-conducting liquid in the storage tank 21, the lower part of the decorative wall 2 directly receives the heat transferred by the natural convection of the heat-conducting liquid, while the area above the working liquid level receives the heat transferred upward by the metal plate. This results in a temperature distribution along the height of the decorative wall 2 where the lower part is warmer than the upper part, allowing heat to be concentrated and released to the area where people are active, and reducing ineffective high temperatures in the upper part of the building. Figure 4 This diagram illustrates the connection between the outdoor air conditioning unit 7, the booster pipe 4, the heating pipe 3, the bottom tank 1, and the decorative wall 2. The working liquid level of the heat-conducting liquid and the natural convection path are not shown to scale in the diagram.

[0026] The outdoor air conditioning unit 7 provides a heat source for heating. The air conditioning unit's booster pipe interface 8 is located on the outdoor air conditioning unit 7 and connects to the booster pipe 4. An indoor temperature sensor collects indoor temperature data and can be installed in the living room or a bedroom. A heat source-side temperature sensor can be installed on the heating pipe 3, the booster pipe 4, or the base trough 1 to collect heat source-side temperature data. A wall temperature sensor group is arranged along the height of the decorative wall 2 and can be installed at the lower, middle, and upper parts of the decorative wall 2 to collect wall temperatures at different heights. A processor connects to the indoor temperature sensor, the heat source-side temperature sensor, the wall temperature sensor group, and the outdoor air conditioning unit 7 to perform data acquisition, temperature processing, heat determination, and control generation. These sensors provide indoor temperature, heat source-side temperature, and wall temperature sequences. The target indoor temperature can be input by the user or selected by the heating mode. The outdoor unit's output setting can be obtained from the operating control information of the outdoor air conditioning unit 7.

[0027] Specifically, in one embodiment, the system comprises a processor that performs the functions of a data acquisition module, a temperature processing module, a heat determination module, and a control generation module. The processor can be an air conditioner controller, a wall heating controller, or a control chip found in an indoor control panel. The indoor temperature sensor, the heat source-side temperature sensor, and the wall temperature sensor group can be existing temperature sensors, and the outdoor air conditioning unit 7 can be an outdoor air conditioning unit with heating output level adjustment functionality. This embodiment primarily describes the heat transfer, data acquisition, heat status judgment, and output level control methods for metal decorative walls during the direct-drive heating process of the outdoor air conditioning unit.

[0028] In this embodiment, the decorative wall 2 is a metal decorative wall or a decorative wall with a metal heat-conducting layer. The outdoor air conditioning unit 7 provides heat source input to the heating pipe 3 through the air conditioning unit pressurization pipe interface 8 and the pressurization pipe 4. The heating pipe 3 can be a metal heat exchange pipe, and the heating medium supplied with heat by the outdoor air conditioning unit 7 flows inside the heating pipe 3. The heating medium exchanges heat with the heat-conducting liquid in the bottom tank 1 through the pipe wall of the heating pipe 3.

[0029] A storage tank 21 is located inside the decorative wall 2 and communicates with the bottom tank 1. The heat-conducting liquid in both the bottom tank 1 and the storage tank 21 can be water or a water-based antifreeze heat-conducting liquid. The working liquid level is higher than the bottom tank 1 and extends to a set height inside the decorative wall 2. The working liquid level height can be determined based on the building's floor height, the height of the activity area, the heat dissipation area of ​​the decorative wall 2, and the room's heating load. The working liquid level does not need to extend to the top of the decorative wall 2, so that the decorative wall 2 forms a liquid heat exchange area along its height and a non-direct liquid heat exchange area above the working liquid level.

[0030] After the heating pipe 3 transfers heat to the heat-conducting liquid in the bottom tank 1, the temperature of the heat-conducting liquid near the heating pipe 3 rises and rises into the storage tank 21. The heat-conducting liquid in the storage tank 21, whose temperature is lower than that of the heated liquid, flows back towards the bottom tank 1, thus forming natural convection in the area below the working liquid surface of the bottom tank 1 and the storage tank 21. The heat-conducting liquid exchanges heat with the metal plate of the decorative wall 2 through natural convection, causing the metal wall surface below the working liquid surface to heat up. The metal wall surface above the working liquid surface does not directly contact the heat-conducting liquid; its heat is mainly conducted upwards along the metal plate from the metal wall surface near the working liquid surface. The surface of the decorative wall 2 facing the room then releases heat into the room through natural convection and radiation.

[0031] The area below the working fluid level directly receives heat from the natural convection of the heat-conducting liquid, and its surface heating rate and stable temperature are generally higher than those of the area above the working fluid level. The area above the working fluid level relies on the upward heat transfer through the metal plate, and its surface temperature gradually changes with height. Therefore, the lower part of the decorative wall 2, where people are active, forms the main heating area, and the heat received by the upper space of the building is correspondingly reduced. The insulation board 5 is installed between the decorative wall 2 and the building wall 6 to reduce heat transfer to the building wall 6, allowing the decorative wall 2 to release heat towards the interior.

[0032] The data acquisition module acquires indoor temperature, target indoor temperature, heat source side temperature, outdoor unit output level, and wall temperature sequence. Indoor temperature is collected by an indoor temperature sensor. The target indoor temperature can be input by the user via control panel, remote control, or mobile terminal, or obtained by selecting the heating mode. The heat source side temperature can be collected by a temperature sensor located on the outer wall of heating pipe 3, in the heat-conducting liquid area within the bottom tank 1, or near the end of the pressurized pipe 4 close to heating pipe 3. The outdoor unit output level can be obtained from the operating feedback signal of the outdoor air conditioning unit 7, such as low, medium, high, or output levels one to five. Increasing or decreasing the output level by one refers to switching to an adjacent higher or lower heating capacity level from the current level.

[0033] The wall temperature sequence is collected by a wall temperature sensor array. The wall temperature sensor array is arranged along the height of the decorative wall 2, preferably on the metal surface of the decorative wall 2 facing the interior, or on the inner side close to the metal surface. At least one temperature measuring point can be set below the working liquid surface of the heat transfer fluid, and at least one temperature measuring point can be set above the working liquid surface, to reflect the temperature changes in the natural convection heat transfer area of ​​the liquid and the upward heat transfer area of ​​the metal plate.

[0034] Taking three temperature measurement positions as an example, the lowest temperature measurement position can be set in the area of ​​10%-25% of the height of decorative wall 2, the middle temperature measurement position can be set in the area of ​​45%-60% of the height of decorative wall 2, and the upper temperature measurement position can be set in the area of ​​75%-90% of the height of decorative wall 2. The working surface of the heat-conducting liquid can be located between the lowest and middle temperature measurement positions, or it can be set near the middle temperature measurement position according to the height of the personnel activity area. The processor reads the wall surface temperature of each temperature measurement position within the same sampling period and arranges them in order from bottom to top to obtain the wall surface temperature sequence. For example, when the temperatures of the lower, middle, and upper temperature measurement positions are 29.1℃, 28.4℃, and 27.9℃ respectively within the same sampling period, the wall surface temperature sequence is 29.1℃, 28.4℃, and 27.9℃. In any two adjacent temperature measurement positions, the temperature measurement position closer to the bottom of the decorative wall is designated as the lower temperature measurement position, and the temperature measurement position closer to the top of the decorative wall is designated as the adjacent upper temperature measurement position.

[0035] The sampling period can be determined based on the thickness of the metal decorative wall, the working liquid level of the heat transfer fluid, the height of the storage tank 21, the length of the bottom tank 1, the capacity of the heat transfer fluid, the heat exchange capacity of the heating pipe 3, and the indoor heating area. The sampling period can be 10s-60s. When the metal wall surface heats up quickly, the sampling period can be 10s-20s; when the area of ​​the decorative wall or the capacity of the heat transfer fluid increases, the sampling period can be 30s-60s. The control period can be the same as the sampling period, or it can consist of multiple sampling periods, for example, every 3 sampling periods constitute a control period. Within each control period, the processor re-determines the current vertical heating state and does not directly use the determination result of the previous control period.

[0036] The vertical thermal response benchmark is obtained from historical qualified heating cycles. This benchmark can include the effective temperature rise, bottom response time, allowable duration of adjacent heat transfer, and benchmark-continued temperature rise. A historical qualified heating cycle refers to an operating cycle in which no sensor disconnection, heat source abnormalities, air conditioner outdoor unit malfunction alarms, or communication anomalies occurred during heating, and the indoor temperature approached the target indoor temperature while the wall temperature did not exceed safety limits. Heating cycles involving window ventilation, frequent manual adjustments to the target indoor temperature, significant fluctuations in sensor data, or air conditioner outdoor unit alarms are not considered historical qualified heating cycles. The processor can select the most recent 5-30 historical qualified heating cycles as statistical samples, or it can select trial operation data from the same room, the same decorative wall structure, the same working liquid level of the heat transfer fluid, and the same heating mode as statistical samples.

[0037] To obtain the effective temperature rise, the processor selects a stable observation period of 5-15 minutes before heating starts, and statistically analyzes the temperature fluctuation range at each measurement location during this period. The temperature fluctuation range at each measurement location is obtained by the difference between the highest and lowest temperatures during the observation period. The processor takes the maximum value of the temperature fluctuation range at each measurement location and adds an anti-interference margin to this maximum value to obtain the effective temperature rise. The anti-interference margin can be determined based on sensor measurement errors and on-site temperature disturbances, for example, 0.2℃-0.5℃.

[0038] For example, if the temperature fluctuation ranges at the lower, middle, and upper temperature measurement locations before heating are 0.12℃, 0.16℃, and 0.10℃ respectively, and the processor takes the maximum temperature fluctuation range of 0.16℃, then adds an anti-interference margin of 0.24℃, resulting in an effective temperature rise of 0.40℃. The effective temperature rise range can be between 0.3℃ and 1.0℃, with the specific value determined by trial operation data or historical qualified heating cycles.

[0039] When determining whether a temperature measurement location has generated an effective temperature rise, the lowest temperature measurement location uses the wall temperature at the moment the heat source side temperature begins to rise as the bottom temperature rise reference. If the heat source side temperature rises for two consecutive sampling cycles, and the cumulative increase reaches 0.5℃-1.5℃, it can be confirmed that the heat source side temperature has begun to rise. For any temperature measurement location other than the lowest temperature measurement location, the processor first determines the lower temperature measurement location adjacent to and below it, and then uses the temperature of that lower temperature measurement location at the moment the lower temperature measurement location generates an effective temperature rise as the upward temperature rise reference.

[0040] Once the temperature rise at the measurement location relative to the corresponding temperature rise reference reaches the effective temperature rise range, the processor continues to read the wall temperature for the next two sampling cycles. If the wall temperature in the next two sampling cycles is not lower than the wall temperature at which the effective temperature rise range was first reached, then the measurement location is determined to have generated an effective temperature rise. For example, if the effective temperature rise range is 0.4℃, and the temperature at the lower measurement location is 28.0℃ when the heat source side temperature begins to rise, and the lower measurement location rises to 28.4℃, and the temperatures in the next two sampling cycles are 28.4℃ and 28.5℃ respectively, then the lower measurement location is determined to have generated an effective temperature rise. When determining the middle measurement location, the lower measurement location is the measurement location below the middle measurement location; when determining the upper measurement location, the middle measurement location is the measurement location below the upper measurement location.

[0041] When obtaining the bottom response duration, the processor calculates the time taken for an effective temperature rise at the lowest temperature measurement location after the heat source side temperature begins to rise in multiple historical qualified heating cycles. The processor can sort multiple bottom response times from shortest to longest and take the last sample value in the sorted order as the bottom response duration, or it can take the average of multiple bottom response times and add a time margin.

[0042] For example, the bottom response times in 10 historical qualified heating cycles were 4.5 min, 5.0 min, 5.2 min, 5.5 min, 5.8 min, 6.0 min, 6.2 min, 6.5 min, 6.8 min, and 7.0 min, respectively. The processor can select 6.8 min or 7.0 min as the bottom response duration. The bottom response duration can be set from 3 min to 20 min.

[0043] When the allowable heat transfer time for each group of adjacent temperature measurement positions is obtained, the processor calculates the time required for the adjacent upper temperature measurement position to achieve an effective temperature rise after the lower temperature measurement position achieves an effective temperature rise. If the decorative wall 2 has three temperature measurement positions: lower, middle, and upper, the heat transfer time from the lower to the middle and from the middle to the upper are calculated separately.

[0044] When both the lower and adjacent upper temperature measuring positions are below the working surface of the heat transfer fluid, the adjacent heat transfer time primarily reflects the temperature rise process at adjacent heights after the establishment of natural convection in the heat transfer fluid. When the adjacent upper temperature measuring position is above the working fluid surface, the adjacent heat transfer time also reflects the process of heat transfer from the liquid heat exchange area to the upper part of the metal plate. Since the height and position relative to the working fluid surface differ for each group of adjacent temperature measuring positions, the allowable duration for adjacent heat transfer can be set separately.

[0045] The allowable duration for adjacent heat transfer can be determined by sorting the heat transfer times for the corresponding height segment in historical qualified heating cycles, or by taking the average value and adding a time margin. For example, if the historical heat transfer time from the lower to the middle section is concentrated between 6 and 9 minutes, 9 minutes can be taken as the allowable duration for adjacent heat transfer from the lower to the middle section; if the historical heat transfer time from the middle to the upper section is concentrated between 8 and 12 minutes, 12 minutes can be taken as the allowable duration for adjacent heat transfer from the middle to the upper section. The allowable duration for adjacent heat transfer can be between 5 and 30 minutes.

[0046] When obtaining the baseline sustained temperature rise, the processor reads the wall temperature change after the outdoor unit's output setting was reduced during historical qualified heating cycles. When the outdoor unit reduces its output setting, the processor uses the moment of reduction as the starting point for observing the sustained temperature rise, and within 5-20 minutes after the reduction, it calculates the maximum continued temperature rise of the already heated measurement location relative to the moment of reduction. This continued temperature rise mainly comes from the heat transfer fluid and the heat already stored in the metal wall.

[0047] The processor can either average the maximum continued temperature rise over multiple historical qualified heating cycles, or sort the maximum continued temperature rise of each cycle from smallest to largest and take the lowest value in the sorted list as the baseline continued temperature rise. For example, if in a certain cycle the temperature rises by 0.8℃ at the lower measuring position, 0.6℃ at the middle measuring position, and 0.3℃ at the upper measuring position after a temperature drop, then the continued temperature rise for that cycle is 0.8℃. After statistical analysis of multiple cycles, if the lowest value in the sorted list is 0.9℃, then the baseline continued temperature rise is 0.9℃. The baseline continued temperature rise can range from 0.3℃ to 2.5℃.

[0048] When determining the target temperature range for the decorative wall, the temperature processing module first calculates the difference between the indoor temperature and the target indoor temperature, and then determines the indoor temperature difference level based on this difference. As the difference between the indoor temperature and the target indoor temperature increases, the target center temperature of the matched wall surface increases accordingly; when the indoor temperature approaches the target indoor temperature, the target center temperature of the matched wall surface decreases accordingly.

[0049] For example, a difference of less than 1°C between the indoor temperature and the target indoor temperature is classified as a low temperature difference level; a difference of 1°C-3°C is classified as a medium temperature difference level; and a difference greater than 3°C is classified as a high temperature difference level. The low temperature difference level can be matched with a target wall center temperature of 30°C and a temperature tolerance of 1°C; the medium temperature difference level can be matched with a target wall center temperature of 32°C and a temperature tolerance of 1.5°C; and the high temperature difference level can be matched with a target wall center temperature of 34°C and a temperature tolerance of 2°C. The processor subtracts the temperature tolerance from the target wall center temperature to obtain the lower limit of the target temperature range, and adds the temperature tolerance to the target wall center temperature to obtain the upper limit of the target temperature range. The target temperature range for the decorative wall can be updated within each control cycle, or when the difference between the indoor temperature and the target indoor temperature crosses the boundary of the indoor temperature difference level.

[0050] When the temperature processing module determines the early convergence temperature, it selects the temperature measurement locations that have already experienced effective temperature rise from the wall temperature sequence, and calculates the surface heating rate based on the temperature change at each measurement location within adjacent sampling periods and the sampling time. For example, if the sampling period is 30 seconds and a temperature measurement location rises from 31.2℃ to 31.4℃, then the surface heating rate at that measurement location is 0.4℃ / min. If multiple temperature measurement locations have all experienced effective temperature rise, the processor calculates the surface heating rate for each location separately and takes the maximum value as the current surface heating rate.

[0051] The early convergence reduction can be determined based on the baseline continuous temperature rise and the current surface heating rate. When the current surface heating rate is less than 0.1℃ / min, the early convergence reduction can be 0.8 times the baseline continuous temperature rise; when the current surface heating rate is 0.1℃ / min-0.3℃ / min, the early convergence reduction can be the baseline continuous temperature rise; when the current surface heating rate is greater than 0.3℃ / min, the early convergence reduction can be 1.2 times the baseline continuous temperature rise. The early convergence reduction can be set to be no less than 0.3℃ and no more than 3℃. The processor subtracts the early convergence reduction from the upper limit of the target temperature range of the decorative wall to obtain the early convergence temperature. For example, if the target temperature range of the decorative wall is 32℃-36℃, the baseline continuous temperature rise is 0.9℃, and the current surface heating rate is 0.25℃ / min, then the early convergence temperature is 35.1℃.

[0052] The heat assessment module determines the current vertical heating status within each control cycle. When the outdoor unit's output speed increases and the temperature on the heat source side begins to rise, the processor starts the bottom response timer. If the lowest temperature measurement position does not generate an effective temperature rise within the bottom response time, the decorative wall 2 is determined to be in a state of insufficient bottom response. This state indicates that the heating pipe 3 has received heat source input, but the natural convection in the area below the working liquid surface of the bottom tank 1 and the liquid storage tank 21 has not yet caused an effective temperature rise in the lower part of the decorative wall 2. If the lowest temperature measurement position generates an effective temperature rise within the bottom response time, the processor starts the heat transfer timer between the lowest temperature measurement position and the adjacent upper temperature measurement position.

[0053] When determining an upward heat transfer lag state, the processor starts timing the heat transfer process between the lower temperature measuring position and the adjacent upper temperature measuring position from the moment an effective temperature rise occurs at the lower temperature measuring position. If the adjacent upper temperature measuring position does not generate an effective temperature rise within the adjacent allowable heat transfer time, the decorative wall 2 is determined to be in an upward heat transfer lag state. When the adjacent upper temperature measuring position is below the working liquid level, this state indicates that the natural convection of the heat-conducting liquid has not transferred heat to the adjacent height area within the normal time; when the adjacent upper temperature measuring position is above the working liquid level, this state indicates that the heat transfer to the upper area of ​​the metal wall has not generated an effective temperature rise within the normal time. If the adjacent upper temperature measuring position generates an effective temperature rise within the adjacent allowable heat transfer time, and there is a next set of adjacent temperature measuring positions, the processor starts heat transfer timing for the next set of adjacent temperature measuring positions.

[0054] When determining an early convergence state, the processor checks whether any temperature measurement point in the wall temperature sequence that has already experienced an effective temperature rise has reached the early convergence temperature. When any heated temperature measurement point reaches the early convergence temperature, the decorative wall 2 is determined to be in an early convergence state. This state indicates that the wall has not yet reached the upper limit of the target temperature range, but the heat-conducting liquid below the working fluid level and the heat already stored in the metal wall will continue to be released. If the current output level is maintained, the wall temperature may continue to rise.

[0055] When the early convergence state and the upward heat transfer lag state occur in the same sampling period, the processor determines that decorative wall 2 is in a vertical temperature difference constraint state. The vertical temperature difference constraint state indicates that the lower heated area is close to the early convergence temperature, while the adjacent upper area has not yet formed a normal heating response. At this time, the current output level is maintained and further increases are prohibited to control the heating rate of the lower area, while retaining the heat source input required for the upper area to continue heating.

[0056] The control generation module generates heating control results based on the current vertical heating status. In the case of insufficient bottom response, if the outdoor unit is not at its highest output setting, the output setting is increased by one level; if the outdoor unit is at its highest output setting, it remains at that setting. In the case of upward heat transfer lag, the current output setting is maintained and increasing the setting is prohibited. In the case of vertical temperature difference constraint, the current output setting is maintained and increasing the setting is prohibited. In the case of early convergence, if the outdoor unit is not at its lowest output setting, the output setting is decreased by one level; if the outdoor unit is at its lowest output setting, it remains at that setting.

[0057] When the conditions of insufficient bottom response, lag in upward heat transfer, vertical temperature difference constraint, and premature convergence are not met, the control generation module performs normal range adjustment. If the highest temperature in the wall temperature sequence is lower than the lower limit of the target temperature range for the decorative wall, the output level is increased; if the lowest temperature in the wall temperature sequence is higher than the upper limit of the target temperature range for the decorative wall, the output level is decreased; otherwise, the current output level is maintained.

[0058] After generating the heating control result for increasing or decreasing the heating level, the processor initiates a level hold cycle. During the level hold cycle, the processor no longer generates new increase or decrease results, but continues to collect the indoor temperature, heat source side temperature, and wall temperature sequences, and continues to determine the current vertical heating status. The level hold cycle can include 2-5 control cycles. When the control cycle is 60 seconds, the level hold cycle can be 2-5 minutes. If a sensor malfunction, heat source side abnormality, or wall temperature exceeding the safe temperature limit occurs during the level hold cycle, the processor can exit the level hold cycle and execute abnormal protection control.

[0059] For ease of understanding, let's take a metal decorative wall with three temperature measurement positions: lower, middle, and upper. The working liquid level of the heat transfer fluid is located between the lower and middle measurement positions. The lower measurement position is situated within the natural convection heat transfer zone of the heat transfer fluid, while the middle and upper measurement positions are above the working liquid level. The sampling period is 30 seconds. Historical statistics from qualified heating cycles show an effective temperature rise of 0.4℃, a bottom response time of 7 minutes, an allowable heat transfer time between the lower and middle sections of 9 minutes, an allowable heat transfer time between the middle and upper sections of 12 minutes, and a baseline sustained temperature rise of 0.9℃. The indoor temperature is 18℃, the target indoor temperature is 22℃, and the processor determines the target temperature range for the decorative wall to be 32℃-36℃. When the current surface heating rate is 0.25℃ / min, the early convergence temperature is 35.1℃, and the holding period is two control cycles.

[0060] During a heating control process, the outdoor unit of the air conditioner is upgraded from level two to level three, and the temperature on the heat source side begins to rise. The processor then initiates a bottom response timer. If the temperature rise at the lower temperature measurement position relative to the bottom temperature rise baseline does not reach 0.4℃ within 7 minutes, or if it reaches 0.4℃ but does not meet the condition of maintaining this temperature for two consecutive sampling cycles, it is determined to be in a state of insufficient bottom response. If the outdoor unit is not currently at its highest output level, the output level is increased by one level; if it is already at its highest output level, it remains at that level. If the lower temperature measurement position shows an effective temperature rise within 5 minutes, the heat transfer timer from the lower to the middle section is initiated. If the middle temperature measurement position does not show an effective temperature rise within 9 minutes, it is determined to be in a state of upward heat transfer lag, and the current output level is maintained while further increases are prohibited. If the middle temperature measurement position does not show an effective temperature rise, while the lower temperature measurement position reaches 35.1℃, it is determined to be in a state of vertical temperature difference constraint, and the current output level is maintained while further increases are prohibited. If the middle temperature measurement point generates a normal and effective temperature rise, and the lower or middle temperature measurement point reaches 35.1℃, it is determined to be in an early convergence state, and a heating control result of downgrading or maintaining the lowest output level is generated based on the current level. If neither of the above states is met, and the current state is not in a level maintenance cycle, the current output level will be upgraded, downgraded, or maintained based on the wall temperature sequence relative to the 32℃-36℃ range.

[0061] The above-mentioned sampling period, effective temperature rise range, bottom response time, allowable duration of adjacent heat transfer, observation period for continuous temperature rise, baseline continuous temperature rise amount, early convergence deduction amount, and gear holding period can all be determined based on trial operation data or historical qualified heating cycles under the conditions of the same room, the same metal decorative wall structure, the same working liquid level of the heat transfer fluid, and the same air conditioner outdoor unit gear.

[0062] In one specific embodiment, the decorative wall 2 is an aluminum alloy metal decorative wall, installed on the interior side of the building wall 6, with a heat insulation plate 5 between the decorative wall 2 and the building wall 6. A bottom groove 1 is arranged around the bottom of the building wall 6, and the lower end of the decorative wall 2 is sealed and installed on the bottom groove 1. A liquid storage tank 21 is provided inside the decorative wall 2, and the liquid storage tank 21 is connected to the bottom groove 1. The bottom groove 1 and the liquid storage tank 21 together contain the heat-conducting liquid, and the working liquid level is higher than the bottom groove 1 and extends into the interior of the decorative wall 2. The working liquid level is set between the lower temperature measuring position and the middle temperature measuring position, so that the area of ​​the decorative wall 2 below the working liquid level forms a natural convection heat transfer area, and the area above the working liquid level forms an upward heat transfer area of ​​the metal plate.

[0063] Heating element 3 is installed in the bottom tank 1. One end of the pressurization pipe 4 is connected to heating element 3, and the other end is connected to the pressurization pipe interface 8 of the outdoor air conditioning unit 7. When the outdoor air conditioning unit 7 is in heating mode, it provides heat source input to heating element 3 through pressurization pipe 4. Heating element 3 heats the heat-conducting liquid in bottom tank 1. The heated heat-conducting liquid rises along the liquid storage tank 21, while the heat-conducting liquid with a lower temperature flows back towards bottom tank 1, forming natural convection in the area below the working liquid surface. The heat-conducting liquid heats the metal wall surface at the bottom of the decorative wall 2 through natural convection, and the heat above the working liquid surface is conducted upwards along the metal wall surface, resulting in a vertical temperature distribution in the decorative wall 2 where the lower part of the wall is warmer than the upper part.

[0064] In this embodiment, the decorative wall 2 has a height of 2.6m. Three wall temperature sensors are installed on the metal surface of the decorative wall 2 facing the interior. The three wall temperature sensors are located at positions 0.4m, 1.3m, and 2.2m from the bottom of the decorative wall 2, respectively, serving as the lower, middle, and upper temperature measurement positions. The working liquid level of the heat-conducting liquid is located between 0.4m and 1.3m. The heat source side temperature sensor is located at the end of the pressurization pipe 4 near the heating pipe 3, and the indoor temperature sensor is located in the indoor return air area. The processor's sampling period is 30s, and every two sampling periods form a control cycle. The outdoor air conditioning unit 7 has five heating output levels, from level one to level five, and the level holding period is two control cycles.

[0065] During the system debugging phase, 10 historical qualified heating cycles were selected to establish a vertical thermal response benchmark. Within the first 10 minutes of heating startup, the temperature fluctuations at the lower, middle, and upper temperature measurement locations were 0.12℃, 0.16℃, and 0.10℃, respectively. The maximum temperature fluctuation of 0.16℃ was taken, and an anti-interference margin of 0.24℃ was added, resulting in an effective temperature rise of 0.40℃. The bottom response time of the 10 historical qualified heating cycles was sorted from shortest to longest, and 7.0 minutes was taken as the bottom response duration. The heat transfer time from the lower to the middle section was concentrated between 6 and 9 minutes, and 9 minutes was taken as the allowable heat transfer time between the lower and middle sections; the heat transfer time from the middle to the upper section was concentrated between 8 and 12 minutes, and 12 minutes was taken as the allowable heat transfer time between the middle and the upper sections. After the outdoor unit of the air conditioner reduced its operating temperature, the lowest value of the maximum continued temperature rise in each cycle was 0.9℃, and 0.9℃ was used as the benchmark for continued temperature rise.

[0066] During heating operation, when the indoor temperature is 18℃ and the target indoor temperature is 22℃, the processor determines the target temperature range for the decorative wall to be 32℃-36℃. Among the temperature measurement locations that have already generated effective temperature rise, when the maximum surface heating rate is 0.25℃ / min, the processor determines the premature convergence temperature to be 35.1℃.

[0067] During a control process, after the outdoor air conditioning unit 7 is upgraded from level two to level three, the temperature on the heat source side increases for two consecutive sampling cycles and the cumulative increase reaches 1℃. The processor then starts the bottom response timing. If the temperature increase of the lower temperature measurement position relative to the bottom temperature rise reference does not reach 0.40℃ within 7.0 minutes, or if it reaches 0.40℃ but does not meet the condition of maintaining the temperature for two consecutive sampling cycles, the decorative wall 2 is determined to be in a state of insufficient bottom response. Since the outdoor air conditioning unit 7 is currently at level three, the processor adjusts the outdoor air conditioning unit 7 from level three to level four and does not generate new upgrade or downgrade results within two control cycles.

[0068] If the lower temperature measurement position generates an effective temperature rise within 5 minutes, the processor starts the heat transfer timing from the lower to the middle section. If the middle temperature measurement position does not generate an effective temperature rise within 9 minutes, the decorative wall 2 is determined to be in an upward heat transfer lag state, and the current output level is maintained and upgrading is prohibited. If the middle temperature measurement position does not generate an effective temperature rise within 9 minutes, and the lower temperature measurement position reaches 35.1℃, the early convergence state and the upward heat transfer lag state are established in the same sampling cycle. The processor determines the decorative wall 2 to be in a vertical temperature difference constraint state, maintains the current output level, and upgrades are prohibited. If the middle temperature measurement position generates an effective temperature rise normally, and the lower or middle temperature measurement position reaches 35.1℃, the decorative wall 2 is determined to be in an early convergence state; if the outdoor air conditioning unit 7 is not in the first level, the output level is reduced by one level, and no new upgrade or downgrade results are generated within two control cycles. If the conditions of insufficient bottom response, lag in upward heat transfer, vertical temperature difference constraint, and premature convergence are not met, and the current output is not in the holding cycle, then the output will be upgraded, downgraded, or maintained based on the position of the highest and lowest temperatures in the wall temperature sequence relative to 32℃-36℃.

[0069] In summary, by acquiring indoor temperature, target indoor temperature, heat source side temperature, air conditioner outdoor unit output setting, and wall temperature sequence, and combining this with the vertical thermal response benchmark obtained from historical qualified heating cycles, the target temperature range and early convergence temperature of the decorative wall are determined. This allows heating control to no longer rely solely on indoor temperature or the operating status of the air conditioner outdoor unit, but to consider the vertical heating changes of the decorative wall itself. By identifying insufficient bottom response, lag in upward heat transfer, and early convergence within each control cycle, different situations can be distinguished: the heat source side has heated up but the bottom of the wall has not responded effectively; the lower area has heated up but the adjacent upper area is not following suit; and the heated area is approaching the risk of subsequent overshoot. By generating heating control results based on the current vertical heating status, it helps reduce problems such as insufficient local heating, temperature overshoot, increased wall temperature fluctuations, and frequent adjustments of the air conditioner outdoor unit caused by asynchronous changes in heat source output and wall temperature during the heating process of the decorative wall.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. A controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit, characterized in that, include: The data acquisition module is used to acquire indoor temperature, indoor target temperature, heat source side temperature, air conditioner outdoor unit output level and wall temperature sequence, and retrieve the vertical thermal response benchmark obtained from historical qualified heating cycles. The temperature processing module is used to determine the target temperature range of the decorative wall based on the temperature difference between the indoor temperature and the indoor target temperature, and to determine the early convergence temperature based on the vertical thermal response reference and the wall temperature sequence, wherein the early convergence temperature is lower than the upper limit of the target temperature range of the decorative wall. The heat determination module is used to determine the current vertical heating state of the decorative wall in each control cycle based on the heat source side temperature, the air conditioner outdoor unit output setting, and the wall temperature sequence. When the heat source side temperature rises, if the lowest temperature measurement position in the wall temperature sequence does not generate an effective temperature rise within the bottom response time, it is determined to be a bottom response insufficiency state. When the lower temperature measurement position has generated an effective temperature rise but the adjacent upper temperature measurement position has not generated an effective temperature rise within the adjacent heat transfer allowable time, it is determined to be an upward heat transfer lag state. When the temperature measurement position in the wall temperature sequence that has generated an effective temperature rise reaches the early convergence temperature, it is determined to be an early convergence state. The control generation module is used to generate heating control results based on the current vertical heating state.

2. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 1, characterized in that, When obtaining the wall temperature sequence, it includes: Within the same sampling period, the wall surface temperature is collected at at least three temperature measurement positions arranged from bottom to top along the height direction of the decorative wall, and the wall surface temperature sequence is obtained according to the arrangement order of each temperature measurement position from the bottom to the top of the decorative wall. In two adjacent temperature measurement positions, the temperature measurement position closer to the bottom of the decorative wall is designated as the lower temperature measurement position, and the temperature measurement position closer to the top of the decorative wall is designated as the adjacent upper temperature measurement position.

3. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 2, characterized in that, Before retrieving the vertical thermal response reference, the following should be included: Read the heat source side temperature, air conditioner outdoor unit output setting, and wall temperature sequence from historical qualified heating cycles; The effective temperature rise range is obtained based on the temperature fluctuation range of the wall surface temperature sequence before heating. The bottom response time is obtained by taking the time it takes for the lowest temperature measurement position to generate an effective temperature rise after the temperature on the heat source side begins to rise. Based on the time required for an effective temperature rise to occur at the adjacent upper temperature measurement position after the lower temperature measurement position has an effective temperature rise, the allowable heat transfer time between adjacent temperature measurement positions in each group is obtained. The baseline continuous temperature rise is obtained by taking into account the continued temperature rise of the measured positions on the wall after the outdoor unit of the air conditioner has reduced its output setting.

4. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 3, characterized in that, Determining the target temperature range for decorative walls includes: The indoor temperature difference level is determined based on the difference between the indoor temperature and the target indoor temperature. Read the target center temperature and allowable temperature deviation of the wall surface that match the indoor temperature difference level; The target temperature range of the decorative wall is determined based on the target center temperature of the wall surface and the allowable temperature deviation.

5. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 3, characterized in that, Determining the early convergence temperature includes: Based on the temperature change of each temperature measurement location that has generated an effective temperature rise in the wall temperature sequence within adjacent sampling periods, the surface heating rate of each temperature measurement location is obtained. Take the maximum surface heating rate among the surface heating rates at each temperature measurement location as the current surface heating rate; The early convergence deduction is determined based on the baseline sustained temperature rise and the current surface temperature rise rate. The early convergence temperature is obtained by subtracting the early convergence deduction from the upper limit of the target temperature range of the decorative wall.

6. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 3, characterized in that, When determining whether a temperature measurement location has experienced an effective temperature rise, the following should be included: The lowest temperature measurement location is based on the temperature at which the temperature on the heat source side begins to rise, serving as the bottom temperature rise reference. For any temperature measurement position other than the lowest temperature measurement position, the temperature measurement position adjacent to and below it is taken as the lower temperature measurement position, and the current temperature of the temperature measurement position at the moment when the lower temperature measurement position generates an effective temperature rise is taken as the upward temperature rise reference. When the temperature rise at the temperature measurement location relative to the corresponding temperature rise reference reaches the effective temperature rise range, and the wall temperature in two consecutive sampling cycles is not lower than the wall temperature when the effective temperature rise range is reached, it is determined that the temperature measurement location has generated an effective temperature rise.

7. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 6, characterized in that, When determining a state of insufficient bottom response, the following are included: When the outdoor unit of the air conditioner increases its output level and the temperature on the heat source side begins to rise, the bottom response timer is activated. If the lowest temperature measurement position does not generate an effective temperature rise within the bottom response time, the decorative wall is determined to be in a state of insufficient bottom response. If the lowest temperature measurement position generates an effective temperature rise within the bottom response time, then the heat transfer timing between the lowest temperature measurement position and the adjacent upper temperature measurement position will be started.

8. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 7, characterized in that, Determining the upward heat transfer lag state includes: Timing is recorded from the moment an effective temperature rise occurs at the lower temperature measurement position, between the lower temperature measurement position and the adjacent upper temperature measurement position. If the adjacent upper temperature measurement position does not generate an effective temperature rise within the adjacent heat transfer allowable time, the decorative wall is determined to be in an upward heat transfer lag state. If the adjacent temperature measurement position above generates an effective temperature rise within the adjacent heat transfer allowable time, and there is a next set of adjacent temperature measurement positions, then the heat transfer timing is started for the next set of adjacent temperature measurement positions.

9. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 8, characterized in that, Determining an early convergence state includes: When any temperature measurement point in the wall temperature sequence that has generated an effective temperature rise reaches the early convergence temperature, the decorative wall is determined to be in an early convergence state. When the early convergence state and the upward heat transfer lag state are established in the same sampling period, the decorative wall is determined to be in a vertical temperature difference constraint state.

10. The controllable temperature decorative wall heating system based on direct drive of an air conditioner outdoor unit according to claim 9, characterized in that, When generating heating control results, the following are included: In the case of insufficient response at the bottom, if the outdoor unit of the air conditioner is not at the highest output level, the output level will be increased by one level; if the outdoor unit of the air conditioner is at the highest output level, the highest output level will be maintained. Under the condition of upward heat transfer lag, maintain the current output level and prohibit upgrading; Under vertical temperature difference constraints, maintain the current output level and prohibit upgrading; In the early convergence state, if the outdoor unit of the air conditioner is not at the lowest output level, the output level will be reduced by one level; if the outdoor unit of the air conditioner is at the lowest output level, the lowest output level will be maintained. When the conditions of insufficient bottom response, lag in upward heat transfer, vertical temperature difference constraint, and premature convergence are not met, if the highest temperature in the wall temperature sequence is lower than the lower limit of the target temperature range of the decorative wall, the output level is increased; if the lowest temperature in the wall temperature sequence is higher than the upper limit of the target temperature range of the decorative wall, the output level is decreased; otherwise, the current output level is maintained. After generating the heating control result of upshifting or downshifting, no new upshifting or downshifting result is generated within the gear holding cycle, which includes at least two control cycles.

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