A noise control method for an air source heat pump temperature control dehumidification system

Abstract

A kind of noise control method of air source heat pump temperature control dehumidification system, compressor is connected with outdoor heat exchanger, indoor heat exchanger respectively by electromagnetic four-way valve, central controller with noise monitoring sensor is close to or connected with indoor heat exchanger, indoor heat exchanger is connected with outdoor heat exchanger by electronic expansion valve, when operating, include the following steps: step one, air source heat pump temperature control dehumidification system power on and start refrigeration, enter step two;Step two, the central controller of air source heat pump temperature control dehumidification system sets target frequency N4, the first indoor real-time noise value Z0 is detected by central controller through noise sensor, compressor is operated to set target frequency N4 after starting, enter step three or enter step twenty-one.The purpose of noise reduction is achieved by noise control of sound source, and the noise control effect is more ideal;By controlling the frequency rate of compressor, the system runs more smoothly and reliably.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of air source heat pump temperature control dehumidification system noise control method. BACKGROUND

[0002] In current air source heat pump or air conditioner, noise is always one of the important indicators that users are most concerned about, and the main noise reduction scheme is to reduce noise by adding sound insulation cotton to sound source, but in fact, this method is relatively limited to noise reduction effect, especially for valve throttling sound, refrigerant emission sound, refrigerant flow sound and compressor lift frequency sound, it is difficult to achieve ideal noise reduction effect.

[0003] Among them, the throttling mechanism of refrigeration system produces two points of refrigerant flow sound: first, because of the collision of refrigerant injection to pipeline in throttling process, second, the throttle opening is too small to cause "sibilant" sound, and this sound will be transmitted to the unit periphery through the pipeline, causing psychological and physiological discomfort to people. At the same time, background noise or control will directly affect the unit noise, causing different noise discomfort to people.

[0004] Chinese patent document No. CN 104518721A disclosed a kind of compressor control system of variable frequency air conditioner on April 15, 2015, which includes: current sampling module, sampling three-phase current of compressor;Position estimator, obtain the estimated angle and estimated speed of rotor;Speed correction module, speed correction is carried out to the estimated speed of rotor to obtain cross-axis target current;First coordinate conversion module, coordinate conversion is carried out to three-phase current to obtain direct-axis current and cross-axis current;First double-T network wave trap and second double-T network wave trap, respectively, filter out the harmonic in direct-axis current and cross-axis current;Current correction module, direct-axis current and cross-axis current after filtering out harmonic are respectively current corrected to obtain direct-axis voltage and cross-axis voltage;Second coordinate conversion module, coordinate conversion is carried out to direct-axis voltage and cross-axis voltage to obtain three-phase voltage. This kind of compressor control system suppresses the noise of the compressor of variable frequency air conditioner by filtering current harmonic, but its actual noise suppression effect is not ideal, and needs to be improved. SUMMARY

[0005] The purpose of the present application is to provide an air source heat pump temperature control dehumidification system noise control method with good noise suppression effect, to overcome the deficiencies in the prior art.

[0006] An air source heat pump temperature control dehumidification system noise control method designed for this purpose is characterized in that the compressor is connected to the outdoor heat exchanger and the indoor heat exchanger through the electromagnetic four-way valve, the central controller with noise monitoring sensor is close to or connected to the indoor heat exchanger, and the indoor heat exchanger is connected to the outdoor heat exchanger through the electronic expansion valve. When operating, the following steps are included:

[0007] Step one, the air source heat pump temperature control and dehumidification system is powered on to start refrigeration, and step two is entered;

[0008] Step two, the target frequency N4 of the air source heat pump temperature control and dehumidification system is set by the central controller, the central controller detects the first indoor real-time noise value Z0 through the noise sensor, the compressor runs at the set target frequency N4 after being started, and step three or step twenty-one is entered;

[0009] Step three, in the running process, the central controller detects the current first indoor real-time noise value Z1, and step four is entered;

[0010] Step four, the central controller judges whether Z1>Z0+△Z0 is established, when it is established, step five is entered, and when it is not established, step six is entered; the first deviation value△Z0 is in the range of 3-5 dB;

[0011] Step five, the central controller controls the compressor to run at the frequency of the first frequency increasing rate N1; N1 is in the range of 0.2-1 Hz / s or 1-5 hz / 5s;

[0012] Step six, the central controller controls the compressor to run at the frequency of the second frequency increasing rate N2; N2 is in the range of 2-3 Hz / s;

[0013] Step seven, the central controller judges whether the current working frequency of the compressor is equal to the target frequency N4, when it is established, step eight is entered, and when it is not established, step three is entered;

[0014] Step eight, the compressor is stably running, and step nine is entered;

[0015] Step nine, the central controller judges whether the current cooling capacity needs to be increased, when it is established, step ten is entered, and when it is not established, step fourteen is entered;

[0016] Step ten, the central controller detects the second indoor real-time noise value Z2 before frequency increasing, and step eleven is entered;

[0017] Step eleven, in the frequency increasing process, the central controller detects the current second indoor real-time noise value Z21, and step eleven is entered;

[0018] Step twelve, the central controller judges whether Z21>Z2+△Z1 is established, when it is established, step fifteen is entered, and when it is not established, step thirteen is entered; the second deviation value△Z1 is in the range of 4-6 dB;

[0019] Step thirteen, the central controller controls the compressor to run at the frequency of the first frequency increasing rate N1; step nine is entered;

[0020] Step fourteen, the central controller judges whether the set stop condition or user stop is reached, when it is established, step sixteen is entered, when it is not established, step eight is entered;

[0021] Step fifteen, the central controller controls the compressor to run at the frequency of the second frequency increasing rate N2; step nine is entered;

[0022] Step sixteen, the air source heat pump temperature regulating and dehumidifying system is closed and stopped.

[0023] Further, the noise control method of the air source heat pump temperature regulating and dehumidifying system further comprises the following steps:

[0024] Step twenty-one, the central controller sets the first working frequency N3 and the second working frequency N5, N4>N3, N4>N5, the first working frequency N3 is in the range of 30-45 Hz, and the second working frequency N5 is in the range of 30-40 Hz; step twenty-two is entered;

[0025] Step twenty-two, in the running process, the central controller detects the current third indoor side real-time noise value Z3 through the noise sensor; step twenty-three is entered;

[0026] Step twenty-three, the central controller judges whether Z3Z0 is established, when it is established, step twenty-four is entered, when it is not established, step twenty-two is entered;

[0027] Step twenty-four, the central controller judges whether the current working frequency of the compressor is less than the first working frequency N3, when it is established, step twenty-five is entered, when it is not established, step twenty-eight is entered;

[0028] Step twenty-five, in the running process, the central controller detects the current fourth indoor side real-time noise value Z4 through the noise sensor; step twenty-six is entered;

[0029] Step twenty-six, the central controller judges whether Z4Z3+△Z3 is established, when it is established, step twenty-seven is entered, when it is not established, step twenty-four is entered; the third deviation value △Z3 is in the range of 5-8 dB;

[0030] Step twenty-seven, the central controller controls the electronic expansion valve opening to keep the initial opening P1 state; step twenty-eight is entered;

[0031] Step twenty-eight, the central controller judges whether the current working frequency of the compressor is running to the set target frequency N4, when it is established, step twenty-nine is entered, when it is not established, step twenty-four is entered;

[0032] Step twenty-nine, in the running process, the central controller detects the current fifth indoor side real-time noise value Z5 through the noise sensor, and enters step thirty; the fourth deviation value ΔZ4 is in the range of 5-10 dB;

[0033] Step thirty, the central controller judges whether Z5>Z3+ΔZ4 is established, when it is established, enters step thirty-one, and when it is not established, enters step twenty-nine;

[0034] Step thirty-one, the central controller controls the electronic expansion valve opening degree adjustment to P1+ΔP1, the first opening degree deviation value ΔP1 is in the range of 10-40 steps, and enters step thirty-two;

[0035] Step thirty-two, the central controller controls the compressor to keep the set target frequency N4 stable running for the first time T1, and enters step thirty-three; the first time T1 is in the range of 20-50 seconds;

[0036] Step thirty-three, the central controller controls the electronic expansion valve to adjust the opening degree P2 according to the actual set logic; enters step thirty-four;

[0037] Step thirty-four, the central controller judges whether the set shutdown condition or user shutdown is reached, when it is established, enters step sixteen, and when it is not established, enters step thirty-three.

[0038] Further, the step sixteen further includes entering step forty-one;

[0039] Step forty-one, the central controller detects the current sixth indoor side real-time noise value Z6 before closing through the noise sensor, and enters step forty-two;

[0040] Step forty-two, the central controller judges whether the current working frequency of the compressor is reduced to the second working frequency N5, when it is established, enters step forty-three, and when it is not established, enters step forty-one;

[0041] Step forty-three, the central controller detects the current seventh indoor side real-time noise value Z7 through the noise sensor, and enters step forty-four;

[0042] Step forty-four, the central controller judges whether Z7>Z6-ΔZ5 is established, when it is established, enters step forty-five, and when it is not established, enters step forty-three; the fifth deviation value ΔZ5 is in the range of 5-15 dB;

[0043] Step forty-five, the central controller controls the electronic expansion valve to keep the current opening degree P3; enters step forty-six;

[0044] Step forty-six, the central controller judges whether the current working frequency of the compressor is reduced to below the second working frequency N5, when it is established, enters step forty-seven, and when it is not established, enters step forty-five;

[0045] Step forty-seven, the central controller detects the current eighth indoor side real-time noise value Z8 through the noise sensor, and enters step forty-two;

[0046] Step forty-eight, the central controller judges whether Z8 < Z7-△Z6 is established, when it is established, enters step forty-nine, when it is not established, enters step forty-seven; the sixth deviation value△Z6 is in the range of 1-3dB;

[0047] Step forty-nine, the central controller controls the electronic expansion valve opening degree adjustment to P3+△P3, the second opening degree deviation value△P3 is in the range of 50-400 steps, and enters step fifty;

[0048] Step fifty, the central controller detects the current ninth indoor side real-time noise value Z9 through the noise sensor, and enters step fifty-one;

[0049] Step fifty-one, the central controller judges whether the electronic expansion valve opening degree remains P3+△P3 for a second time T2, or the central controller judges whether Z9 < Z91 is established, when it is established, enters step fifty-two, when it is not established, enters step fifty; the ninth indoor side set noise value Z91 is in the range of less than 32dB, and the second time T2 is in the range of 30-60 seconds;

[0050] Step fifty-two, the central controller controls the electronic expansion valve to recover to the actual opening degree P4 according to the actual setting logic.

[0051] The central controller in the application detects the indoor side real-time noise values in different stages through the noise sensor, compares the ambient environment noise value with the system noise value, then changes the current working frequency of the compressor or the current opening degree of the electronic expansion valve through the comparison result, reduces the refrigerant flow noise, effectively controls the sound of the compressor and the electronic expansion valve as the main sound source, and brings better experience effect to the user.

[0052] The application achieves the purpose of noise reduction through noise control of the sound source, and the noise control effect is more ideal; the compressor frequency rising and falling rate is controlled, so that the system runs more stably and reliably.

[0053] In summary, the application has the characteristics of good noise suppression effect. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 It is a structural schematic diagram of an embodiment of the application.

[0055] Figure 2 It is a first flow chart of the application.

[0056] Figure 3 The second flow chart is for the present application.

[0057] Figure 4 The third flow chart is for the present application.

[0058] In the figure: 1 is a compressor, 2 is an outdoor heat exchanger, 3 is an electromagnetic four-way valve, 4 is an indoor heat exchanger, 5 is a central controller with a noise monitoring sensor, and 6 is an electronic expansion valve. DETAILED DESCRIPTION

[0059] The present application is further described below in conjunction with the accompanying drawings and examples.

[0060] Referring to Figures 1-4 A noise control method for an air source heat pump temperature regulating and dehumidifying system, a compressor 1 is connected with an outdoor heat exchanger 2 and an indoor heat exchanger 4 through an electromagnetic four-way valve 3, a central controller 5 with a noise monitoring sensor is close to or connected with the indoor heat exchanger 4, and the indoor heat exchanger 4 is connected with the outdoor heat exchanger 2 through an electronic expansion valve 6. The operation includes the following steps:

[0061] Step one: turn on the power of the air source heat pump temperature regulating and dehumidifying system to start refrigeration, and enter step two;

[0062] Step two: set a target frequency N4 for the central controller of the air source heat pump temperature regulating and dehumidifying system, and detect a first indoor real-time noise value Z0 through the noise sensor of the central controller. After the compressor is started, run at the set target frequency N4, and enter step three or step twenty-one;

[0063] Step three: during the running process, detect a current first indoor real-time noise value Z1 through the central controller, and enter step four;

[0064] Step four: determine whether Z1>Z0+△Z0 is true or not through the central controller. When it is true, enter step five, and when it is not true, enter step six; the first deviation value△Z0 is in the range of 3-5 dB;

[0065] Step five: control the compressor to run at a frequency of a first frequency increasing rate N1 through the central controller; N1 is in the range of 0.2-1 Hz / s or 1-5 hz / 5s;

[0066] Step six: control the compressor to run at a frequency of a second frequency increasing rate N2 through the central controller; N2 is in the range of 2-3 Hz / s;

[0067] Step seven: determine whether the current working frequency of the compressor is equal to the target frequency N4 through the central controller. When it is true, enter step eight, and when it is not true, enter step three;

[0068] Step eight: the compressor runs stably, and enter step nine;

[0069] Step nine, the central controller judges whether the current cold quantity does not meet the actual demand and needs to increase the frequency, when it is established, step ten is entered, when it is not established, step fourteen is entered;

[0070] Step ten, the central controller detects the second indoor side real-time noise value Z2 before the frequency increase, and step eleven is entered;

[0071] Step eleven, in the frequency increase process, the central controller detects the current second indoor side real-time noise value Z21, and step eleven is entered;

[0072] Step twelve, the central controller judges whether Z21>Z2+△Z1 is established, when it is established, step fifteen is entered, when it is not established, step thirteen is entered; the second deviation value△Z1 is in the range of 4-6dB;

[0073] Step thirteen, the central controller controls the compressor to increase the frequency at the first frequency increasing rate N1; step nine is entered;

[0074] Step fourteen, the central controller judges whether the set shutdown condition or user shutdown is reached, when it is established, step sixteen is entered, when it is not established, step eight is entered;

[0075] Step fifteen, the central controller controls the compressor to increase the frequency at the second frequency increasing rate N2; step nine is entered;

[0076] Step sixteen, the air source heat pump temperature regulating and dehumidifying system is closed and stopped.

[0077] The noise control method of the air source heat pump temperature regulating and dehumidifying system further comprises the following steps:

[0078] Step twenty-one, the central controller sets the first working frequency N3 and the second working frequency N5, and N4>N3, N4>N5, the first working frequency N3 is in the range of 30-45Hz, the second working frequency N5 is in the range of 30-40Hz, and step twenty-two is entered;

[0079] Step twenty-two, in the running process, the central controller detects the current third indoor side real-time noise value Z3 through the noise sensor, and step twenty-three is entered;

[0080] Step twenty-three, the central controller judges whether Z3Z0 is established, when it is established, step twenty-four is entered, when it is not established, step twenty-two is entered;

[0081] Step twenty-four, the central controller judges whether the current working frequency of the compressor is less than the first working frequency N3, when it is established, step twenty-five is entered, when it is not established, step twenty-eight is entered;

[0082] Step twenty-five, in the running process, the central controller detects the current fourth indoor side real-time noise value Z4 through the noise sensor, and enters step twenty-six;

[0083] Step twenty-six, the central controller judges whether Z4 < Z3 + ΔZ3 is established, when it is established, enters step twenty-seven, when it is not established, enters step twenty-four; the third deviation value ΔZ3 is in the range of 5-8 dB;

[0084] Step twenty-seven, the central controller controls the electronic expansion valve opening to keep the initial opening P1 state; enters step twenty-eight;

[0085] Step twenty-eight, the central controller judges whether the current working frequency of the compressor runs to the set target frequency N4, when it is established, enters step twenty-nine, when it is not established, enters step twenty-four;

[0086] Step twenty-nine, in the running process, the central controller detects the current fifth indoor side real-time noise value Z5 through the noise sensor, and enters step thirty; the fourth deviation value ΔZ4 is in the range of 5-10 dB;

[0087] Step thirty, the central controller judges whether Z5 > Z3 + ΔZ4 is established, when it is established, enters step thirty-one, when it is not established, enters step twenty-nine;

[0088] Step thirty-one, the central controller controls the electronic expansion valve opening to adjust P1 + ΔP1, the first opening deviation value ΔP1 is in the range of 10-40 steps, and enters step thirty-two;

[0089] Step thirty-two, the central controller controls the compressor to keep the set target frequency N4 stable running for the first time T1, and enters step thirty-three; the first time T1 is in the range of 20-50 seconds;

[0090] Step thirty-three, the central controller controls the electronic expansion valve to adjust the opening P2 according to the actual set logic; enters step thirty-four;

[0091] Step thirty-four, the central controller judges whether the set shutdown condition or user shutdown is reached, when it is established, enters step sixteen, when it is not established, enters step thirty-three.

[0092] In practice, step three is prior to step twenty-one.

[0093] The step sixteen further includes entering step forty-one;

[0094] Step forty-one, the central controller detects the current sixth indoor side real-time noise value Z6 before closing through the noise sensor, and enters step forty-two;

[0095] Step forty-two, the central controller judges whether the current working frequency of the compressor is reduced to the second working frequency N5, when it is true, step forty-three is entered, when it is not true, step forty-one is entered;

[0096] Step forty-three, the central controller detects the current seventh indoor side real-time noise value Z7 through the noise sensor, step forty-four is entered;

[0097] Step forty-four, the central controller judges whether Z7>Z6-△Z5 is true, when it is true, step forty-five is entered, when it is not true, step forty-three is entered; the fifth deviation value △Z5 is in the range of 5-15dB;

[0098] Step forty-five, the central controller controls the electronic expansion valve to keep the current opening P3; step forty-six is entered;

[0099] Step forty-six, the central controller judges whether the current working frequency of the compressor is reduced to the second working frequency N5, when it is true, step forty-seven is entered, when it is not true, step forty-five is entered;

[0100] Step forty-seven, the central controller detects the current eighth indoor side real-time noise value Z8 through the noise sensor, step forty-two is entered;

[0101] Step forty-eight, the central controller judges whether Z8Z7-△Z6 is true, when it is true, step forty-nine is entered, when it is not true, step forty-seven is entered; the sixth deviation value △Z6 is in the range of 1-3dB;

[0102] Step forty-nine, the central controller controls the electronic expansion valve opening to adjust to P3+△P3, the second opening deviation value △P3 is in the range of 50-400 steps, step fifty is entered;

[0103] Step fifty, the central controller detects the current ninth indoor side real-time noise value Z9 through the noise sensor, step fifty-one is entered;

[0104] Step fifty-one, the central controller judges whether the state of the electronic expansion valve opening keeping P3+△P3 lasts the second time T2, or the central controller judges whether Z9Z91 is true, when it is true, step fifty-two is entered, when it is not true, step fifty is entered; the ninth indoor side set noise value Z91 is in the range of lower than 32dB, the second time T2 is in the range of 30-60 seconds;

[0105] Step fifty-two, the central controller controls the electronic expansion valve to recover to the actual opening P4 according to the actual setting logic.

[0106] When the air source heat pump temperature and dehumidification system is powered on to start refrigeration, the air source heat pump temperature and dehumidification system control unit detects the first indoor side real-time noise value Z0 = 32 dB through the noise sensor, and the compressor runs at the set target frequency N4 after starting. At this time, the first deviation value ΔZ0 = 3 dB, Z0 + ΔZ0 = 32 dB + 3 dB = 35 dB.

[0107] During operation, the control unit detects that the current first indoor side real-time noise value Z1 = 42 dB, that is, Z1 > Z0 + ΔZ0 is established, and the compressor at this time is frequency-raised at a first frequency-raising rate N1 = 1 Hz / s.

[0108] If, during operation, the control unit detects that the current first indoor side real-time noise value Z1 = 34 dB, that is, < Z0 + ΔZ0 is established, the compressor at this time is frequency-raised at a second frequency-raising rate N2 = 3 Hz / s.

[0109] When the compressor is stably running, and the cooling capacity needs to be raised, the control unit detects the second indoor side real-time noise value Z2 = 38 dB before frequency raising, and at this time, the second deviation value ΔZ1 = 4 dB.

[0110] If, when in the process of frequency raising, the control unit detects that the current second indoor side real-time noise value Z21 = 45 dB, Z2 + ΔZ1 = 38 dB + 4 dB = 42 dB, Z21 > Z2 + ΔZ1 is established, and the compressor is frequency-raised at a first frequency-raising rate N1 = 1 Hz / s.

[0111] If, when in the process of frequency raising, the control unit detects that the current second indoor side real-time noise value Z21 = 41 dB, Z2 + ΔZ1 = 38 dB + 4 dB = 42 dB, Z21 < Z2 + ΔZ1 is established, and the compressor is frequency-raised at a second frequency-raising rate N2 = 3 Hz / s.

[0112] When the air source heat pump temperature and dehumidification system is powered on to start refrigeration, the control unit detects the current third indoor side real-time noise value Z3 = 30 dB through the noise sensor, and at this time, Z3 < Z0 is established. When the current working frequency of the compressor is less than the first working frequency N3 = 35 Hz, that is, the current working frequency of the compressor runs within the first working frequency N3, the third deviation value ΔZ3 = 5 dB, Z3 + ΔZ3 = 30 dB + 5 dB = 35 dB.

[0113] The control unit detects the current fourth indoor side real-time noise value Z4 = 34 dB through the noise sensor, and Z4 < Z3 + ΔZ3 is established, so the electronic expansion valve opening degree remains the initial opening degree P1 = 230 steps.

[0114] When the current operating frequency of the compressor runs to the set target frequency N4=78Hz, the central controller detects the current fifth indoor side real-time noise value Z5=48dB through the noise sensor, at this time, the fourth deviation value ΔZ4=6dB, the first opening deviation value ΔP1=40 steps, there is Z3+ΔZ4=30dB+6dB=36dB, Z5>Z3+ΔZ4 is established, the electronic expansion valve opening degree is adjusted to P1+ΔP1=230 steps+40 steps=270 steps, after the compressor keeps the set target frequency N4 stable operation for the first time T1=20 seconds, the electronic expansion valve adjusts the opening degree P2 according to the actual set logic.

[0115] When the air source heat pump temperature and dehumidification system is closed and stopped, the central controller detects the current sixth indoor side real-time noise value Z6=52dB before closing through the noise sensor, the fourth deviation value ΔZ5=15dB, Z6-ΔZ5=52dB-15dB=37dB, when the current operating frequency of the compressor decreases to the second operating frequency N5=40Hz, the central controller detects the current seventh indoor side real-time noise value Z7=42dB through the noise sensor, there is Z7>Z6-ΔZ5, therefore, the electronic expansion valve keeps the current opening degree P3=380 steps.

[0116] When the current operating frequency of the compressor decreases to the second operating frequency N5=35Hz or below, the central controller detects the current eighth indoor side real-time noise value Z8=25dB through the noise sensor, the fifth deviation value ΔZ6=2dB, there is Z7-ΔZ6=42dB-2dB=40dB, Z8Z7-ΔZ6 is established, the second opening deviation value ΔP3=50 steps, the electronic expansion valve opening degree is adjusted to P3+ΔP3=380 steps+50 steps=430 steps.

[0117] The central controller judges whether the state of the electronic expansion valve opening degree kept for P3+ΔP3 lasts for T2=30 seconds or the central controller detects the current ninth indoor side real-time noise value Z9=20dB lower than the ninth indoor side set noise value Z91=23dB through the noise sensor, the electronic expansion valve recovers to the actual opening degree P4=350 steps according to the actual set logic.

[0118] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated.

[0119] The basic principles and main features of the application and the advantages of the application are shown and described above. Those skilled in the art should understand that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A noise control method for an air source heat pump temperature regulation and dehumidification system, characterized in that: The compressor (1) is connected with the outdoor heat exchanger (2) and the indoor heat exchanger (4) through the electromagnetic four-way valve (3), the central controller (5) with noise monitoring sensor is close to or connected with the indoor heat exchanger (4), the indoor heat exchanger (4) is connected with the outdoor heat exchanger (2) through the electronic expansion valve (6), and the operation includes the following steps: Step one, the air source heat pump temperature regulating and dehumidifying system is powered on to start refrigeration, and step two is entered; Step two, the central controller of the air source heat pump temperature regulating and dehumidifying system sets a target frequency N4, the central controller detects a first indoor real-time noise value Z0 through the noise sensor, the compressor runs at the set target frequency N4 after being started, and step three or step twenty-one is entered; Step three, in the running process, the central controller detects a current first indoor real-time noise value Z1, and step four is entered; Step four, the central controller judges whether Z1>Z0+△Z0 is established, when it is established, step five is entered, and when it is not established, step six is entered; the first deviation value△Z0 is 3-5 dB; Step five, the central controller controls the compressor to run at a first frequency increasing rate N1; the value range of N1 is 0.2-1 Hz / s or 1-5 hz / 5 s; Step six, the central controller controls the compressor to run at a second frequency increasing rate N2; the value range of N2 is 2-3 Hz / s; Step seven, the central controller judges whether the current working frequency of the compressor is equal to the target frequency N4, when it is established, step eight is entered, and when it is not established, step three is entered; Step eight, the compressor runs stably, and step nine is entered; Step nine, the central controller judges whether the current cooling capacity needs to be increased, when it is established, step ten is entered, and when it is not established, step fourteen is entered; Step ten, the central controller detects a second indoor real-time noise value Z2 before frequency increasing, and step eleven is entered; Step eleven, in the frequency increasing process, the central controller detects a current second indoor real-time noise value Z21, and step eleven is entered; Step twelve, the central controller judges whether Z21>Z2+△Z1 is established, when it is established, step fifteen is entered, and when it is not established, step thirteen is entered; the second deviation value△Z1 is 4-6 dB; Step thirteen, the central controller controls the compressor to run at the first frequency increasing rate N1; step nine is entered; Step fourteen, the central controller judges whether a set shutdown condition or user shutdown is reached, when it is established, step sixteen is entered, and when it is not established, step eight is entered; Step fifteen, the central controller controls the compressor to run at the second frequency increasing rate N2; step nine is entered; Step sixteen, the air source heat pump temperature regulating and dehumidifying system is shut down.

2. The method of claim 1, further comprising: The following steps are included: Step twenty-one, the central controller sets a first working frequency N3 and a second working frequency N5, N4>N3 and N4>N5, the value range of the first working frequency N3 is 30-45 Hz, and the value range of the second working frequency N5 is 30-40 Hz, and step twenty-two is entered; Step twenty-two, the central controller detects the current third indoor real-time noise value Z3 through the noise sensor during operation, and enters step twenty-three; Step twenty-three, the central controller determines whether Z3Z0 is established, when it is established, enters step twenty-four, when it is not established, enters step twenty-two; Step twenty-four, the central controller determines whether the current working frequency of the compressor is less than the first working frequency N3, when it is established, enters step twenty-five, when it is not established, enters step twenty-eight; Step twenty-five, the central controller detects the current fourth indoor real-time noise value Z4 through the noise sensor during operation, and enters step twenty-six; Step twenty-six, the central controller determines whether Z4Z3+△Z3 is established, when it is established, enters step twenty-seven, when it is not established, enters step twenty-four; the third deviation value△Z3 is in the range of 5-8dB; Step twenty-seven, the central controller controls the electronic expansion valve opening to keep the initial opening P1 state; enters step twenty-eight; Step twenty-eight, the central controller determines whether the current working frequency of the compressor is running to the set target frequency N4, when it is established, enters step twenty-nine, when it is not established, enters step twenty-four; Step twenty-nine, the central controller detects the current fifth indoor real-time noise value Z5 through the noise sensor during operation, and enters step thirty; The fourth deviation value△Z4 is in the range of 5-10dB; Step thirty, the central controller determines whether Z5>Z3+△Z4 is established, when it is established, enters step thirty-one, when it is not established, enters step twenty-nine; Step thirty-one, the central controller controls the electronic expansion valve opening to adjust P1+△P1, the first opening deviation value△P1 is in the range of 10-40 steps, and enters step thirty-two; Step thirty-two, the central controller controls the compressor to keep the set target frequency N4 stable running for the first time T1, and enters step thirty-three; the first time T1 is in the range of 20-50 seconds; Step thirty-three, the central controller controls the electronic expansion valve to adjust the opening P2 according to the actual set logic; enters step thirty-four; Step thirty-four, the central controller determines whether the set shutdown condition or user shutdown is reached, when it is established, enters step sixteen, when it is not established, enters step thirty-three.

3. The noise control method of an air source heat pump thermoregulation dehumidification system according to claim 1 or 2, characterized in that The step sixteen further comprises entering step forty-one; Step forty-one, the central controller detects the current sixth indoor real-time noise value Z6 before closing through the noise sensor, and enters step forty-two; Step forty-two, the central controller determines whether the current working frequency of the compressor is decreased to the second working frequency N5, when it is established, enters step forty-three, when it is not established, enters step forty-one; Step forty-three, the central controller detects the current seventh indoor real-time noise value Z7 through the noise sensor, and enters step forty-four; Step forty-four, the central controller determines whether Z7>Z6-△Z5 is established, when it is established, enters step forty-five, when it is not established, enters step forty-three; the fifth deviation value△Z5 is in the range of 5-15dB; Step forty-five, the central controller controls the electronic expansion valve to keep the current opening P3; Enter step forty-six; Step forty-six, the central controller judges whether the current working frequency of the compressor is reduced to below the second working frequency N5, when it is true, step forty-seven is entered, when it is not true, step forty-five is entered; Step forty-seven, the central controller detects the current eighth indoor side real-time noise value Z8 through the noise sensor, and step forty-two is entered; Step forty-eight, the central controller judges whether Z8 < Z7-△Z6 is true, when it is true, step forty-nine is entered, when it is not true, step forty-seven is entered; the sixth deviation value△Z6 is in the range of 1-3dB; Step forty-nine, the central controller controls the electronic expansion valve opening degree adjustment to P3+△P3, the second opening degree deviation value△P3 is in the range of 50-400 steps, and step fifty is entered; Step fifty, the central controller detects the current ninth indoor side real-time noise value Z9 through the noise sensor, and step fifty-one is entered; Step fifty-one, the central controller judges whether the state that the electronic expansion valve opening degree is kept as P3+△P3 lasts the second time T2, or the central controller judges whether Z9 < Z91 is true, when it is true, step fifty-two is entered, when it is not true, step fifty is entered; the ninth indoor side set noise value Z91 is in the range of lower than 32dB, and the second time T2 is in the range of 30-60 seconds; Step fifty-two, the central controller controls the electronic expansion valve to recover to the actual opening degree P4 according to the actual setting logic.

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