Air source air conditioning system and control method thereof

Abstract

The invention relates to the field of air conditioners, particularly provides an air source air conditioning system and a control method thereof, and aims to solve the problem that the heating capacity / refrigerating capacity is attenuated due to the fact that cold air accumulation / hot air accumulation is easily formed during heating / refrigerating operation of an existing air source air conditioning system. In order to achieve the purpose, the air source air conditioning system comprises an outdoor unit and a jet fan, the outdoor unit comprises a plurality of outdoor units distributed in multiple rows and multiple columns, and the outdoor units comprise at least one outdoor unit; the jet fans are used for jetting airflow to the area between the two adjacent rows of outdoor units. According to the scheme, the jet air flow can be guided to the outdoor unit in a concentrated, directional and unobstructed manner, so that cold / hot air can be quickly dispersed, cold / hot air mass is prevented from being formed, and the temperature difference between the temperature around the outdoor unit and the atmosphere environment temperature is reduced.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, and particularly provides an air source air conditioner system and a control method thereof. Background Art

[0002] With the expansion of the application scenarios of air source air conditioner systems, higher requirements are put forward for the heating capacity and energy efficiency of the air conditioner systems. Especially for the scenario of central heating, reducing the heating cost and improving the energy efficiency of the air conditioner system have become the goals of more and more engineering projects. Conventional air conditioner systems usually only consider the improvement of the energy efficiency of the unit itself while ignoring the improvement of the heating capacity of the whole system. When the air source air conditioner system is heating, the outdoor unit needs to absorb a large amount of heat from the surrounding air, resulting in the ambient temperature around the outdoor unit being significantly lower than the actual ambient temperature. When multiple outdoor units are installed in combination, due to the small distance between the outdoor units, the cold air accumulates around the outdoor units, thereby leading to the attenuation of the low-temperature heating capacity. Similarly, when the air conditioner system is operating in cooling mode, it will cause the hot air to accumulate around the outdoor unit, thereby leading to the attenuation of the cooling capacity of the air conditioner system.

[0003] Correspondingly, there is a need in the art for a new air source air conditioner system and a control method thereof to solve the above problems. Summary of the Invention

[0004] The present invention aims to solve the above technical problems, that is, to solve the problem that the existing air source air conditioner system is prone to form cold air accumulation / hot air accumulation during heating / cooling operation, thereby leading to the attenuation of heating capacity / cooling capacity.

[0005] In a first aspect, the present invention provides an air source air conditioner system, characterized in that the air source air conditioner system includes: an outdoor unit including a plurality of outdoor units distributed in multiple rows and columns, and the outdoor unit includes at least one outdoor machine; a jet fan for jetting air flow into the area between two adjacent rows of the outdoor units.

[0006] In the case of adopting the above technical solution, since the jet fan can generate stronger air flow and has better flow control ability, the present invention uses the jet fan to jet the air flow into the area between two adjacent rows of outdoor units, so as to directly and unobstructedly jet the large-volume jet air flow into the area between the outdoor units, rather than simply dispersing the air flow into the target area, thereby being able to quickly disperse the cold / hot air and avoid the formation of cold / hot air masses, and reducing the temperature difference between the temperature around the outdoor unit and the ambient temperature.

[0007] In an alternative technical solution of the above air source air conditioner system, the jet fan is arranged on one side in the length direction of the outdoor unit and is located between two adjacent outdoor units.

[0008] In the case of adopting the above technical solution, since the airflow generated by the jet fan is strong and the jet length is far, therefore, the jet fan is arranged on one side in the length direction of the outdoor unit and is located between two adjacent outdoor units. On the premise of avoiding the formation of cold / hot air masses, the number of jet fans used can also be reduced, thereby simplifying the structure and reducing the cost.

[0009] In an alternative technical solution of the above air source air conditioning system, the air source air conditioning system further includes a water mist system, and the water mist system includes: a water pump; a water mist nozzle, the water mist nozzle is connected to the water outlet of the water pump, and the water mist nozzle is arranged at the air outlet of the jet fan so that the airflow blown out from the air outlet carries water mist.

[0010] In the case of adopting the above technical solution, when the air conditioning system cools in summer, it can also spray the airflow carrying water mist between two adjacent rows of outdoor units through the jet fan, slow down the accumulation of equipment heat, reduce the temperature on the surface of the outdoor heat exchanger, increase the refrigeration efficiency of the air conditioning system, and improve the refrigeration capacity.

[0011] In an alternative technical solution of the above air source air conditioning system, the air outlet of the outdoor unit is arranged at the top, the fan of the outdoor unit is a high-static-pressure fan, and the air outlet direction of the high-static-pressure fan faces the air outlet.

[0012] In the case of adopting the above technical solution, the high-static-pressure fan can concentrate and direct the cold / hot air dispersed by the jet fan and the cold / hot air after heat exchange with the outdoor heat exchanger to a higher position, and then be dispersed into a higher air environment, thereby ensuring the uniformity of air temperature, avoiding the accumulation of cold / hot air masses in a specific area, maintaining the uniform temperature distribution of the entire area, and further reducing the difference between the temperature around the outdoor unit and the atmospheric environment temperature.

[0013] In an alternative technical solution of the above air source air conditioning system, the air source air conditioning system further includes: a first temperature sensor for detecting the ambient temperature of the outdoor unit; a second temperature sensor for detecting the ambient temperature of the atmosphere outside the outdoor unit.

[0014] In the case of adopting the above technical solution, the automatic detection of the difference between the ambient temperature of the unit and the ambient temperature of the atmosphere can be realized, so as to facilitate the timely startup of the jet fan to avoid the accumulation of cold / hot air and improve the heating / cooling effect.

[0015] In the alternative technical solution of the above air source air conditioning system, the number of the jet fans is at least two, which are used to jet airflows into the area between every two adjacent rows of the outdoor units; at least one of the outdoor units corresponding to the jet area of each jet fan is provided with the first temperature sensor to detect the ambient temperature of the units in each jet area.

[0016] In the case of adopting the above technical solution, accurate monitoring and control of the ambient temperature of the units in each area can be realized, so as to more effectively adjust the operating state of the jet fans.

[0017] On the other hand, the present invention also provides a control method for an air source air conditioning system, which is characterized in that the air source air conditioning system includes: an outdoor unit including a plurality of outdoor units distributed in multiple rows and columns, and each outdoor unit includes at least one outdoor machine; a jet fan for jetting airflows into the area between two adjacent rows of the outdoor units; a first temperature sensor for detecting the ambient temperature of the outdoor units; a second temperature sensor for detecting the ambient temperature outside the outdoor units; and the control method includes: when the air conditioning system is started, obtaining the ambient temperature of the units and the ambient temperature of the atmosphere; calculating the difference between the ambient temperature of the units and the ambient temperature of the atmosphere; comparing the magnitude relationship between the difference and a preset difference; and selectively controlling the jet fan to start based on the comparison result.

[0018] In the case of adopting the above technical solution, the difference between the ambient temperature of the units and the ambient temperature of the atmosphere can be automatically monitored, so as to timely control the opening and closing of the jet fan according to the magnitude of the difference, thereby improving the energy efficiency ratio of the system on the premise of ensuring the refrigeration or heating effect of the air conditioning system.

[0019] In the alternative technical solution of the control method of the above air source air conditioning system, the step of "selectively controlling the jet fan to start based on the comparison result" further includes: when the difference is greater than the preset difference, controlling the jet fan to start.

[0020] In the case of adopting the above technical solution, the jet airflows can be concentrated, directed and unobstructed to the area between the outdoor units, and the cold / hot air can be quickly dispersed, avoiding the formation of cold / hot air masses and reducing the temperature difference between the temperature around the outdoor units and the ambient temperature of the atmosphere.

[0021] In an alternative technical solution of the control method of the above air source air conditioning system, the number of the jet fans is at least two, and is used to jet air to the area between every two adjacent rows of the outdoor units; at least one of the outdoor units corresponding to the jet area of each jet fan is provided with the first temperature sensor to detect the ambient temperature of the units in each jet area; the step of "calculating the difference between the ambient temperature of the units and the ambient temperature of the atmosphere" further includes: calculating the difference between the ambient temperature of the units in each jet area and the ambient temperature of the atmosphere; the step of "comparing the magnitude relationship between the difference and a preset difference" further includes: comparing the magnitude relationship between each difference and the preset difference; the step of "when the difference is greater than the preset difference, controlling the jet fan to start" further includes: controlling the jet fan corresponding to the jet area where the difference is greater than the preset difference to start.

[0022] In the case of adopting the above technical solution, the system can start the jet fan only when it may affect the refrigeration or heating effect, avoiding unnecessary energy consumption and improving the energy efficiency ratio of the system. In addition, it also avoids the excessive operation of the jet fan, reduces the wear and damage of the equipment, prolongs the service life of the system, and reduces the maintenance cost.

[0023] In an alternative technical solution of the control method of the above air source air conditioning system, the step of "selectively controlling the jet fan to start based on the comparison result" further includes: controlling the jet fan corresponding to the jet area where the difference is less than or equal to the preset difference to stop.

[0024] In the case of adopting the above technical solution, the start and stop of the jet fan can be controlled according to the actual temperature difference, avoiding unnecessary energy consumption and improving the energy efficiency ratio of the system.

[0025] In an alternative technical solution of the control method of the above air source air conditioning system, the air outlet of the outdoor unit is arranged at the top, the fan of the outdoor unit is a high-static-pressure fan, and the air outlet direction of the high-static-pressure fan faces the air outlet; the control method further includes: when the air conditioning system is started, controlling the high-static-pressure fan to start.

[0026] In the case of adopting the above technical solution, the high-static-pressure fan can concentrate the cold / hot air dispersed by the jet fan and the cold / hot air after heat exchange with the outdoor heat exchanger to a higher position, and then be dispersed into a higher air environment, so as to ensure the uniformity of the air temperature, avoid the accumulation of cold / hot air masses in a specific area, keep the temperature distribution of the whole area uniform, and further reduce the difference between the temperature around the outdoor unit and the ambient temperature of the atmosphere.

[0027] In an alternative technical solution of the control method of the above air source air conditioning system, the air source air conditioning system further includes a water mist system, and the water mist system includes: a water pump; a water mist nozzle, the water mist nozzle is connected to the water outlet of the water pump, and the water mist nozzle is arranged at the air outlet of the jet fan so that the air flow blown out from the air outlet carries water mist; simultaneously with or after the step of "controlling the jet fan to start", the control method further includes: when the air conditioning system is in the cooling mode, controlling the water pump to start.

[0028] In the case of adopting the above technical solution, when the air conditioning system is cooling in summer, it can also spray the air flow carrying water mist to the area between two adjacent rows of outdoor units through the jet fan, slow down the aggregation of equipment heat, reduce the temperature on the surface of the outdoor heat exchanger, increase the cooling efficiency of the air conditioning system, and improve the cooling capacity. Description of the Drawings

[0029] The following describes the preferred embodiments of the present invention with reference to the drawings. In the drawings:

[0030] Figure 1 is a schematic structural diagram of the outdoor unit and the jet fan of the air source air conditioning system of the present invention;

[0031] Figure 2 is a possible schematic structural diagram of the jet fan of the air source air conditioning system of the present invention;

[0032] Figure 3 is the main flowchart of the control method of the air source air conditioning system of the present invention;

[0033] Figure 4 is a possible logic diagram of the control method of the air source air conditioning system of the present invention;

[0034] Figure 5 is another possible logic diagram of the control method of the air source air conditioning system of the present invention.

[0035] Description of the Reference Numerals in the Drawings:

[0036] 1 - Outdoor unit; 11 - Outdoor machine; 111 - Air outlet; 2 - Jet fan; 3 - Water mist nozzle. Detailed Embodiments

[0037] The following describes the preferred embodiments of the present invention with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can adjust them as needed to adapt to specific application scenarios.

[0038] The present invention provides an air source air conditioning system, as Figure 1As shown in the figure, the air source air conditioning system includes an indoor unit and an outdoor unit. The outdoor unit includes a plurality of outdoor units 1. The indoor unit can include one indoor machine or a plurality of parallel-connected indoor machines. Each outdoor unit 1 includes at least one outdoor machine 11. In the case where the outdoor unit 1 includes a plurality of outdoor machines 11, the respective outdoor machines 11 can be connected in parallel. The plurality of outdoor units 1 are connected in parallel and centrally arranged together in a multi-row and multi-column distribution. Each outdoor unit 1 is connected to the indoor unit through a refrigerant pipe to form a refrigerant circulation loop. A throttling element such as a throttle valve or a capillary tube and a compressor are provided on the refrigerant circulation loop to constitute a heat pump system. Among them, the outdoor machine 11 is mainly composed of an outdoor heat exchanger, a casing and a fan. The outdoor heat exchanger and the fan are arranged in the casing. An air inlet and an air outlet 111 are provided on the casing. The air inlet can be arranged on the side of the casing, and the air outlet 111 can be arranged on the top of the casing. The air outlet direction of the fan faces the air outlet 111. The outdoor heat exchanger is on the air outlet path of the fan to accelerate the heat exchange between the air and the outdoor heat exchanger when the fan is started.

[0039] It should be noted that the multi-row and multi-column distribution of each outdoor unit 1 of the outdoor unit refers to a distribution of at least 2 rows and at least 2 columns. For example, it can be a 2-row and 3-column distribution, a 3-row and 5-column distribution, a 5-row and 9-column distribution, etc. The specific number of rows and columns of the distribution can be adjusted according to the actual application scenario.

[0040] When the air conditioning system is in the heating mode, the low-temperature air discharged after heat exchange by the outdoor unit 1 will flow back to the area between the respective outdoor units 1, resulting in a large temperature difference between the area between the outdoor units 1 and the atmospheric environment temperature and cold air accumulation, and further resulting in a decline in heating capacity. Similarly, when the air conditioning system is in the cooling mode, the high-temperature air discharged after heat exchange by the outdoor unit 1 will flow back to the area between the respective outdoor units 1, resulting in a large temperature difference between the area between the outdoor units 1 and the atmospheric environment temperature and hot air accumulation, and further resulting in a decline in cooling capacity.

[0041] To solve the above problems, the air source air conditioning system proposed by the present invention further includes a jet fan 2. The jet fan 2 is used to inject air into the area between two adjacent rows of outdoor units 1. Among them, the above-mentioned "row" can be one row per row or one row per column.

[0042] Since the jet fan 2 can generate a stronger air flow and has better flow control ability, the present invention uses the jet fan 2 to inject air into the area between two adjacent rows of outdoor units 1, and can concentrate, direct and unobstructedly guide the large-volume injected air flow to between the outdoor units 1, rather than simply dispersing the air flow into the target area, so as to quickly disperse the cold / hot air, avoid the formation of cold / hot air masses, and reduce the temperature difference between the temperature around the outdoor unit 1 and the atmospheric ambient temperature.

[0043] Possibly, the jet fan 2 is arranged on one side in the length direction of the outdoor unit and is located between two adjacent outdoor units 1. For example, when the distance between the first outdoor unit 1 and the last outdoor unit 1 in a row is greater than the distance between the first outdoor unit 1 and the last outdoor unit 1 in a column, the jet fan 2 can be arranged between the outdoor units 1 in two adjacent rows and is located on one side of the area between the outdoor units 1 in two adjacent rows. On the contrary, if it is less, the jet fan 2 is arranged between the outdoor units 1 in two adjacent columns and is located on one side of the area between the outdoor units 1 in two adjacent columns. As Figure 1 shown, the length of the outdoor unit is significantly greater than the width, and the jet fan 2 is arranged in the area between two adjacent rows of outdoor units 1 and is located on one side.

[0044] Since the airflow generated by the jet fan 2 is strong and the jet length is far, therefore, arranging the jet fan 2 on one side in the length direction of the outdoor unit and between two adjacent outdoor units 1 can, on the premise of avoiding the formation of cold / hot air masses, also reduce the number of jet fans 2 used, thereby simplifying the structure and reducing the cost. For example, Figure 1 the outdoor unit in is distributed in 3 rows and 5 columns and the length is greater than the width. Therefore, arranging the jet fan 2 on one side in the length direction of the outdoor unit and between two adjacent outdoor units 1 can make the airflow cover the area between the outdoor units 1 by only arranging two jet fans 2, achieving the effect of avoiding the formation of cold / hot air masses.

[0045] As a possible implementation manner, the number of jet fans 2 is at least two, and each jet fan 2 is used to jet airflow into the area between every two adjacent rows of outdoor units 1. That is to say, one jet fan 2 is arranged between every two adjacent rows of outdoor units 1, so as to ensure that the airflow coverage is more uniform and sufficient, and avoid the formation of dead corners in the cold / hot air aggregation areas. When the airflow jets into the area between two adjacent rows of outdoor units 1, multiple jet fans 2 can work together more effectively to ensure the efficient transmission of the airflow.

[0046] As a possible implementation manner, as Figure 2 shown, the air-conditioning system of the present invention further includes a water mist system. The water mist system includes a water pump (not shown in the figure) and a water mist nozzle 3. The water mist nozzle 3 is connected to the water outlet of the water pump, and the water mist nozzle 3 is arranged at the air outlet of the jet fan 2 so that the airflow blown out from the air outlet carries water mist. The water outlet of the water pump can be connected to the inlet of the water mist nozzle 3 through a connecting pipe, but this is not restrictive, and its connection method can be adjusted. For example, the water outlet of the water pump is directly connected to the inlet of the water mist nozzle 3, etc.

[0047] In addition, the water mist nozzle 3 can be arranged on the inner wall of the air outlet of the jet fan 2, and the nozzle faces the outside of the air outlet, so that the air flow blown out from the air outlet carries water mist. However, this is not restrictive. As long as the air flow blown out from the air outlet can carry water mist, its setting method can be adjusted. For example, the water mist nozzle 3 is arranged on the outer wall of the jet fan 2 through a bracket, and the water mist nozzle 3 faces the jet path of the jet fan 2, etc. These adjustments do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0048] With the above setting method, when the air conditioning system is cooling in summer, the jet fan 2 can also be used to spray the air flow carrying water mist into the area between two adjacent rows of outdoor units 1, slow down the accumulation of equipment heat, reduce the temperature of the surface of the outdoor heat exchanger, increase the refrigeration efficiency of the air conditioning system, and improve the refrigeration capacity.

[0049] As a possible implementation manner, the fan of the outdoor unit 11 of the present invention is a high-static-pressure fan, and the air outlet direction of the high-static-pressure fan faces the air outlet 111 of the machine shell. Among them, the high-static-pressure fan refers to a fan that can generate an air flow with a static pressure above 100 Pa.

[0050] On the premise that the present invention uses the jet fan 2 to spray the air flow into the area between two adjacent rows of outdoor units 1, the outdoor unit 11 also uses a high-static-pressure fan. Through the cooperation between the two, the high-static-pressure fan can concentrate the cold / hot air dispersed by the jet fan 2 and the cold / hot air after heat exchange with the outdoor heat exchanger to a higher position, and then disperse it into a higher air environment, so as to ensure the uniformity of the air temperature, avoid the accumulation of cold / hot air masses in a specific area, keep the temperature distribution of the whole area uniform, and further reduce the difference between the temperature around the outdoor unit 1 and the atmospheric environment temperature.

[0051] As a possible implementation manner, at least one first temperature sensor is provided on each outdoor unit 1 corresponding to the jet area of each jet fan 2 of the present invention to detect the ambient temperature of the unit in each jet area. For example, if the first jet fan 2 is used to jet air into the area between the first row of outdoor units 1 and the second row of outdoor units 1, then at least one of the outdoor units 1 in the first row of outdoor units 1 and the second row of outdoor units 1 is provided with a first temperature sensor. When the second jet fan 2 is used to jet air into the area between the second row of outdoor units 1 and the third row of outdoor units 1, then at least one of the outdoor units 1 in the second row of outdoor units 1 and the third row of outdoor units 1 is provided with a first temperature sensor. For example, when the first temperature sensor is provided on the first row of outdoor units 1, the value detected by the first temperature sensor can reflect the ambient temperature of the unit in the area between the first row of outdoor units 1 and the second row of outdoor units 1. When the first temperature sensor is provided on the second row of outdoor units 1, the value detected by the first temperature sensor can reflect the ambient temperature of the unit in the area between the first row of outdoor units 1 and the second row of outdoor units 1, and the ambient temperature of the unit in the area between the second row of outdoor units 1 and the third row of outdoor units 1. The same principle applies to other cases. Possibly, a first temperature sensor is provided on each outdoor unit 11 of the present invention to improve the detection accuracy. It can be provided on the casing of the outdoor unit 11 or at positions such as the air inlet of the casing.

[0052] As a possible implementation manner, the air conditioning system of the present invention further includes a second temperature sensor for detecting the ambient temperature of the atmosphere outside the outdoor unit 1. The second temperature sensor can be provided at a certain distance from the top of the outdoor unit 1, for example, at a position more than 1 meter above the top of the outdoor unit 1. The specific distance can be determined based on experiments, experience, etc., as long as this distance can reflect the ambient temperature of the atmosphere outside the outdoor unit 1. Possibly, a bracket is provided on the casing of any outdoor unit 11 in the outdoor unit, and the bracket extends in the height direction to a position higher than the outdoor unit 11 by a certain distance. The second temperature sensor can be provided at the top of the bracket. Of course, this is not restrictive. For example, the second temperature sensor can also be provided at a position far from the outdoor unit in the horizontal direction, such as more than 1 meter in the horizontal direction. As long as the ambient temperature of the atmosphere outside the outdoor unit 1 can be detected, these adjustments do not deviate from the principle of the present invention and are within the protection scope of the present invention.

[0053] The air conditioning system of the present invention further includes a memory, which is adapted to store multiple program codes. The program codes are adapted to be loaded and run by a processor to execute the control method of the air source air conditioning system of the present invention described below. The memory includes, but is not limited to, random access memory, flash memory, read-only memory, programmable read-only memory, volatile memory, non-volatile memory, serial memory, parallel memory, or registers, etc. The processor includes, but is not limited to, CPLD / FPGA, DSP, ARM processor, MIPS processor, etc. To avoid unnecessarily obscuring the embodiments of the present disclosure, these well-known structures are not shown in the drawings.

[0054] The control method of the air source air conditioning system of the present invention will be introduced below. The control method of the air source air conditioning system of the present invention includes the following steps:

[0055] Step S100: When the air conditioning system is started, obtain the unit ambient temperature and the atmospheric ambient temperature.

[0056] The present invention does not limit the method of starting the air conditioning system. It can be started after receiving a start instruction sent by the user, or it can be automatically started after meeting a preset condition, etc. For example, when the indoor temperature reaches a preset target cooling temperature (such as any value greater than 30°C) / heating temperature (such as any value less than 15°C), the system automatically starts the cooling mode / heating mode. Or the air conditioning system automatically starts according to a preset schedule. For example, it automatically starts the cooling mode at 6 pm every summer evening and the heating mode at 6 pm every winter evening, etc. Or the user directly sends a start instruction through a terminal APP, remote control, etc. After the air conditioning system receives the cooling instruction / heating instruction, it can directly execute the cooling mode / heating mode.

[0057] Wherein, when a first temperature sensor is provided on each outdoor unit, the unit ambient temperature detected by each first temperature sensor can be obtained.

[0058] In addition, when the air conditioning system is started, the present invention can simultaneously control the high-static pressure fan to start, so as to blow the cold / hot air after heat exchange with the outdoor heat exchanger to a higher place, reduce the phenomenon of cold / hot air accumulation, reduce the temperature difference between the unit temperature and the atmospheric ambient temperature, and improve the heating / cooling effect.

[0059] Step S200: Calculate the difference between the unit ambient temperature and the atmospheric ambient temperature.

[0060] Optionally, the difference between the unit ambient temperature and the atmospheric ambient temperature of each injection area can be calculated. Taking the outdoor unit distributed in 3 rows and 5 columns as an example for illustration (the following descriptions are all based on this distribution), when the first temperature sensors are provided on the outdoor units in the first row and the third row, the difference between the unit ambient temperature detected by the first temperature sensor on the outdoor units in the first row and the atmospheric ambient temperature is calculated, which corresponds to the area between the outdoor units in the first row and the second row; and the difference between the unit ambient temperature detected by the first temperature sensor on the outdoor units in the third row and the atmospheric ambient temperature is calculated, which corresponds to the area between the outdoor units in the second row and the third row. When the first temperature sensor is provided on the outdoor units in the second row, the difference between the unit ambient temperature detected by this first temperature sensor and the atmospheric ambient temperature is calculated, which corresponds to the area between the outdoor units in the first row and the second row and the area between the outdoor units in the second row and the third row.

[0061] When there are multiple first temperature sensors corresponding to the injection area, the unit ambient temperature can be taken as the average value of the unit ambient temperatures detected by the first temperature sensors corresponding to the injection area. For example, when the first temperature sensors are provided on each outdoor unit, the difference between the average value of the unit ambient temperatures detected by the first temperature sensors on each outdoor unit in the first row and the second row and the atmospheric ambient temperature is calculated, which corresponds to the area between the outdoor units in the first row and the second row; and the difference between the average value of the unit ambient temperatures detected by the first temperature sensors on each outdoor unit in the second row and the third row and the atmospheric ambient temperature is calculated, which corresponds to the area between the outdoor units in the second row and the third row.

[0062] It should be noted that the difference between the unit ambient temperature and the atmospheric ambient temperature is the absolute difference, that is, the absolute value of the difference.

[0063] Step S300: Compare the magnitude relationship between the difference and the preset difference.

[0064] The magnitude relationship between the difference corresponding to each injection area and the preset difference can be compared. For example, compare the magnitude relationship between the average value of the unit ambient temperatures detected by the first temperature sensors on each outdoor unit in the first row and the second row and the preset difference, and compare the magnitude relationship between the average value of the unit ambient temperatures detected by the first temperature sensors on each outdoor unit in the second row and the third row and the preset difference.

[0065] Among them, the preset difference can be determined according to system design or experiments, etc. Different compressor capacities, refrigerant types, etc. will have different requirements for the preset difference. Usually, the preset difference can be between 1°C and 5°C, and specifically can be 3°C or 2°C, etc.

[0066] Step S400: Based on the comparison result, selectively control the start of the jet fan.

[0067] Possibly, step S400 further includes: controlling the jet fans in the jet regions where the control difference is greater than a preset difference to start, and controlling the jet fans in the jet regions where the control difference is less than or equal to the preset difference to stop.

[0068] For example, when the difference between the unit ambient temperature detected by the first temperature sensor corresponding to the region between the first row and the second row of outdoor units and the atmospheric ambient temperature is greater than the preset difference, the jet fans in this region are controlled to start. When the difference between the unit ambient temperature detected by the first temperature sensor corresponding to the region between the second row and the third row of outdoor units and the atmospheric ambient temperature is less than or equal to the preset difference, the jet fans in this region are controlled to stop.

[0069] The control method of the present invention can concentrate, direct, and unobstructedly guide the jet airflow between the outdoor units, so as to quickly disperse the cold / hot air, avoid the formation of cold / hot air masses, and reduce the temperature difference between the temperature around the outdoor units and the atmospheric ambient temperature. The high-static-pressure fans can concentrate and direct the cold / hot air dispersed by the jet fans and the cold / hot air after heat exchange with the outdoor heat exchangers to a higher position, and then disperse them into a higher air environment, so as to ensure the uniformity of the air temperature, avoid the accumulation of cold / hot air masses in specific regions, maintain the uniform temperature distribution of the entire region, and further reduce the difference between the temperature around the outdoor units and the atmospheric environment temperature. The present invention can also control the start and stop of the jet fans according to the actual temperature difference, so that the system can start the jet fans only when it may affect the refrigeration or heating effect, avoiding unnecessary energy consumption, improving the energy efficiency ratio of the system. In addition, it also avoids the over-operation of the jet fans, reduces the wear and damage of the equipment, extends the service life of the system, and reduces the maintenance cost.

[0070] As a possible implementation manner, when the air-conditioning system is in the refrigeration mode, simultaneously or after controlling the jet fans in the corresponding jet regions to start, the water pumps corresponding to the jet fans are also controlled to start, so that the airflow blown out from the air outlets of the jet fans carries water mist. When the air-conditioning system is in refrigeration in summer, it can also spray the airflow carrying water mist to the region between two adjacent rows of outdoor units through the jet fans, slow down the accumulation of equipment heat, reduce the temperature on the surface of the outdoor heat exchangers, increase the refrigeration efficiency of the air-conditioning system, and improve the refrigeration capacity.

[0071] As a possible implementation manner, the control method of the air-source air-conditioning system of the present invention includes the following steps.

[0072] Step S501: When the heating mode is executed, control the high-static-pressure fans to start.

[0073] Step S502: Obtain the unit ambient temperature and the atmospheric ambient temperature.

[0074] Step S503: Calculate the difference between the unit ambient temperature and the atmospheric ambient temperature corresponding to each jet region.

[0075] Step S504: Compare the magnitude relationship between each difference and a preset difference.

[0076] Step S505: Start the jet fans in the jet regions corresponding to the differences greater than the preset difference; turn off the jet fans in the jet regions corresponding to the differences less than or equal to the preset difference.

[0077] As a possible implementation manner, the control method of the air source air conditioning system of the present invention includes the following steps.

[0078] Step S601: When the refrigeration mode is executed, control the high-static-pressure fan to start.

[0079] Step S602: Obtain the unit ambient temperature and the atmospheric ambient temperature.

[0080] Step S603: Calculate the difference between the unit ambient temperature and the atmospheric ambient temperature corresponding to each jet region.

[0081] Step S604: Compare the magnitude relationship between each difference and a preset difference.

[0082] Step S605: Start the jet fans and water pumps in the jet regions corresponding to the differences greater than the preset difference; turn off the jet fans and water pumps in the jet regions corresponding to the differences less than or equal to the preset difference.

[0083] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An air source air conditioning system, characterized in that, The air source air conditioning system includes: An outdoor unit, including a plurality of outdoor units distributed in multiple rows and columns, and each of the outdoor units includes at least one outdoor machine; A jet fan for jetting air flow into the area between two adjacent rows of the outdoor units.

2. The air source air conditioning system according to claim 1, wherein The jet fan is arranged on one side in the length direction of the outdoor unit and is located between two adjacent outdoor units.

3. The air source air conditioning system according to claim 1, wherein The air source air conditioning system further includes a water mist system, and the water mist system includes: A water pump; A water mist nozzle, the water mist nozzle is connected to the water outlet of the water pump, and the water mist nozzle is arranged at the air outlet of the jet fan so that the air flow blown out from the air outlet carries water mist.

4. The air source air conditioning system according to any one of claims 1 to 3, wherein The air outlet of the outdoor machine is arranged at the top, the fan of the outdoor machine is a high-static-pressure fan, and the air outlet direction of the high-static-pressure fan faces the air outlet.

5. The air source air conditioning system according to any one of claims 1 to 3, wherein The air source air conditioning system further includes: A first temperature sensor for detecting the ambient temperature of the outdoor unit; A second temperature sensor for detecting the ambient temperature of the atmosphere outside the outdoor unit.

6. The air source air conditioning system according to claim 5, wherein The number of the jet fans is at least two, and is used for jetting air flow into the area between every two adjacent rows of the outdoor units; At least one of the outdoor units corresponding to the jetting area of each jet fan is provided with the first temperature sensor to detect the ambient temperature of each jetting area.

7. A control method for an air source air conditioning system, characterized in that, The air source air conditioning system includes: An outdoor unit, including a plurality of outdoor units distributed in multiple rows and columns, and each of the outdoor units includes at least one outdoor machine; A jet fan for jetting air flow into the area between two adjacent rows of the outdoor units; A first temperature sensor for detecting the ambient temperature of the outdoor unit; A second temperature sensor for detecting the ambient temperature of the atmosphere outside the outdoor unit; The control method includes: When the air conditioning system is started, obtaining the ambient temperature of the unit and the ambient temperature of the atmosphere; Calculating the difference between the ambient temperature of the unit and the ambient temperature of the atmosphere; Comparing the magnitude relationship between the difference and a preset difference; Based on the comparison result, selectively controlling the jet fan to start.

8. The control method of the air source air conditioning system according to claim 7, characterized in that The step of "Based on the comparison result, selectively controlling the jet fan to start" further includes: When the difference is greater than the preset difference, controlling the jet fan to start.

9. The control method of the air source air conditioning system according to claim 8, wherein The number of the jet fans is at least two, and is used for jetting air flow into the area between every two adjacent rows of the outdoor units; At least one of the outdoor units corresponding to the jetting area of each jet fan is provided with the first temperature sensor to detect the ambient temperature of each jetting area; The step of "calculating the difference between the ambient temperature of the unit and the ambient temperature of the atmosphere" further includes: Calculating the difference between the ambient temperature of the unit and the ambient temperature of the atmosphere for each injection area; The step of "comparing the magnitude relationship between the difference and a preset difference" further includes: Comparing the magnitude relationship between each of the differences and the preset difference; The step of "controlling the jet fan to start when the difference is greater than the preset difference" further includes: Controlling the jet fan corresponding to the injection area where the difference is greater than the preset difference to start.

10. The control method of the air source air conditioning system according to claim 9, wherein The step of "selectively controlling the jet fan to start based on the comparison result" further includes: Controlling the jet fan corresponding to the injection area where the difference is less than or equal to the preset difference to stop.

11. The control method of the air source air conditioning system according to claim 7, wherein The air outlet of the outdoor unit is provided at the top, the fan of the outdoor unit is a high-static-pressure fan, and the air outlet direction of the high-static-pressure fan faces the air outlet; The control method further includes: Controlling the high-static-pressure fan to start when the air conditioning system is started.

12. The control method of the air source air conditioning system according to claim 8, wherein The air source air conditioning system further includes a water mist system, and the water mist system includes: A water pump; A water mist nozzle, the water mist nozzle is connected to the water outlet of the water pump, and the water mist nozzle is provided at the air outlet of the jet fan so that the air flow blown out from the air outlet carries water mist; Simultaneously with or after the step of "controlling the jet fan to start", the control method further includes: Controlling the water pump to start when the air conditioning system is in the cooling mode.

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