CN112442872A - Control method and device of heat pump system and clothes treatment equipment - Google Patents
Control method and device of heat pump system and clothes treatment equipment Download PDFInfo
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- CN112442872A CN112442872A CN201910824252.9A CN201910824252A CN112442872A CN 112442872 A CN112442872 A CN 112442872A CN 201910824252 A CN201910824252 A CN 201910824252A CN 112442872 A CN112442872 A CN 112442872A
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- cooling fan
- exhaust temperature
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/206—Heat pump arrangements
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Abstract
The embodiment of the invention discloses a control method and device of a heat pump system and clothes treatment equipment. The heat pump system comprises a heat pump and a heat pump cooling fan, and the control method of the heat pump system comprises the following steps: detecting an exhaust temperature of the heat pump; and controlling the running state of the heat pump cooling fan according to the exhaust temperature. Compared with the prior art, the heat pump cooling fan has the advantages that the heat pump cooling effect is better, the energy consumption is lower, and the intelligent level of the operation of the heat pump cooling fan is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of heat pumps, in particular to a control method and device of a heat pump system and clothes treatment equipment.
Background
With the improvement of living standard of people, the more efficient and convenient treatment of clothes becomes the demand of more and more consumers. The clothes drying machine comprises a clothes drying machine, a washing and drying integrated machine and clothes processing equipment, wherein the clothes drying machine can dry clothes, so that the clothes do not need to be aired for a long time, and the clothes processing is more efficient and convenient.
In the prior art, the clothes treating apparatus includes a heat pump system, in which a heat pump heats a refrigerant and then dries clothes by heat conduction of the refrigerant. During the operation of the heat pump, the heat pump cooling fans are synchronously operated to cool the heat pump. However, the control mode of the heat pump cooling fan has high energy consumption and low intelligent level.
Disclosure of Invention
The embodiment of the invention provides a control method and device of a heat pump system and clothes treatment equipment, which are used for reducing the energy consumption of a heat pump radiating fan and improving the intelligent level.
In a first aspect, an embodiment of the present invention provides a method for controlling a heat pump system, where the heat pump system includes a heat pump and a heat pump cooling fan, and the method for controlling the heat pump system includes:
detecting an exhaust temperature of the heat pump;
and controlling the running state of the heat pump cooling fan according to the exhaust temperature.
Optionally, the operating state of the heat pump radiator fan includes on, off, and fan operating speed.
Optionally, the operation state of the heat pump cooling fan comprises starting and stopping;
controlling the operation state of the heat pump cooling fan according to the exhaust temperature, comprising:
when the heat pump cooling fan is started, if the exhaust temperature is smaller than a first temperature threshold value, controlling the heat pump cooling fan to stop;
when the heat pump cooling fan stops, if the exhaust temperature is greater than a second temperature threshold value, controlling the heat pump cooling fan to be started;
wherein the first temperature threshold is less than the second temperature threshold.
Optionally, the operation state of the heat pump cooling fan comprises starting and stopping;
controlling the operation state of the heat pump cooling fan according to the exhaust temperature, comprising:
if the exhaust temperature is greater than a third temperature threshold value, controlling the heat pump cooling fan to be started;
otherwise, controlling the heat pump cooling fan to stop.
Optionally, the heat pump cooling fan is a variable frequency fan;
the operation state of the heat pump cooling fan comprises the fan operation speed;
controlling the operation state of the heat pump cooling fan according to the exhaust temperature, comprising:
the exhaust temperature is compared to at least two temperature thresholds;
determining the running speed of the heat pump cooling fan according to the comparison result of the exhaust temperature and the temperature threshold; or determining the preset operation speed of the heat pump cooling fan according to the current operation speed of the heat pump cooling fan and the comparison result of the exhaust temperature and the temperature threshold;
the preset operation speed of the heat pump cooling fan comprises at least two types.
Optionally, the heat pump is a variable frequency heat pump;
the control method of the heat pump system further includes:
controlling the heat pump to operate at a first heat pump operating speed when the heat pump starts to operate;
if the exhaust temperature is greater than a fourth temperature threshold value, controlling the heat pump to operate at a second heat pump operation speed;
wherein the first heat pump operating speed is greater than the second heat pump operating speed.
Optionally, the heat pump is a variable frequency heat pump;
the control method of the heat pump system further includes: the exhaust temperature is compared to at least two temperature thresholds;
determining the operation speed of the heat pump according to the comparison result of the exhaust temperature and the temperature threshold; or determining the preset operation speed of the heat pump according to the current operation speed of the heat pump and the comparison result of the exhaust temperature and the temperature threshold;
wherein the preset operation speeds of the heat pump include at least two.
Optionally, determining the preset operation speed of the heat pump according to the current operation speed of the heat pump and the comparison result between the exhaust temperature and the temperature threshold comprises:
when the heat pump operates at a third heat pump operating speed, if the exhaust temperature is less than a fifth temperature threshold, controlling the heat pump to operate at a fourth heat pump operating speed;
when the heat pump operates at a fourth heat pump operating speed, if the exhaust temperature is greater than a sixth temperature threshold, controlling the heat pump to operate at a third heat pump operating speed;
wherein the fifth temperature threshold is lower than the sixth temperature threshold, and the third heat pump operating speed is higher than the fourth heat pump operating speed.
In a second aspect, an embodiment of the present invention further provides a control device for a heat pump system, where the control device for a heat pump system includes:
the temperature detection module is used for detecting the exhaust temperature of the heat pump;
and the fan control module is used for controlling the running state of the heat pump cooling fan according to the exhaust temperature.
In a third aspect, embodiments of the present invention also provide a laundry treating apparatus, including: a heat pump system; the heat pump system adopts the control method of the heat pump system according to any embodiment of the invention.
According to the embodiment of the invention, the temperature condition of the heat pump can be obtained by detecting the exhaust temperature, so that the temperature of the heat pump can be accurately measured. According to the embodiment of the invention, the operation state of the heat pump cooling fan is controlled according to the exhaust temperature, namely the operation state of the heat pump cooling fan is controlled according to the temperature of the heat pump. Therefore, the embodiment of the invention realizes the accurate control of the heat dissipation of the heat pump, thereby accurately controlling the temperature of the heat pump. Compared with the prior art, the heat pump cooling fan has the advantages that the heat pump cooling effect is better, the energy consumption is lower, and the intelligent level of the operation of the heat pump cooling fan is improved.
Drawings
Fig. 1 is a schematic structural diagram of a heat pump system according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of a heat pump system according to an embodiment of the present invention;
fig. 3 is a flowchart of another control method of the heat pump system according to the embodiment of the present invention;
fig. 4 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention;
fig. 5 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention;
fig. 6 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention;
fig. 7 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention;
fig. 8 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention;
fig. 9 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention;
fig. 10 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention;
fig. 11 is a schematic structural diagram of a control device of a heat pump system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a heat pump system according to an embodiment of the present invention. For a better understanding of the present invention, the heat pump system is described below. Referring to fig. 1, the heat pump system includes a heat pump 10, a heat pump radiator fan 20, a condenser 30, a heat exchange valve 40, and an evaporator 50. A pipeline 60 for the circulation of the refrigerant is further provided between the heat pump 10, the condenser 30, the heat exchange valve 40 and the evaporator 50. In the operation process of the heat pump system, the refrigerant passes through the heat pump 10, the condenser 30, the heat exchange valve 40 and the evaporator 50 in sequence in the pipeline 60, and the phase state is changed under the action of the refrigerant. The heat pump cooling fan 20 is disposed opposite to the heat pump 10, and is used for cooling the heat pump 10 to prevent the heat pump 10 from being too hot and aging easily.
Fig. 2 is a flowchart of a control method of a heat pump system according to an embodiment of the present invention. Referring to fig. 2, the control method of the heat pump system includes the following steps.
S110, detecting the exhaust temperature of the heat pump.
The working principle of the heat pump is that the heat pump heats a refrigerant in a pipeline when in operation, converts a low-temperature liquid refrigerant into a high-temperature gaseous refrigerant, and outputs the high-temperature gaseous refrigerant to the condenser through a pipeline connected with the heat pump. The discharge temperature of the heat pump is the temperature of the refrigerant gas discharged from the heat pump. For example, a temperature sensor may be provided on the surface of or inside the pipe between the heat pump and the condenser to detect the exhaust gas temperature.
And S120, controlling the running state of the heat pump cooling fan according to the exhaust temperature.
The exhaust temperature comprises the temperature of heat pump work and heat and the temperature of the heat pump, and the exhaust temperature can represent the temperature of the heat pump, and the reason at least comprises the following two aspects:
on the first hand, the exhaust temperature is positively correlated with the operation speed of the heat pump, and the higher the operation speed of the heat pump is, the higher the exhaust temperature is; the slower the operating speed of the heat pump, the lower the exhaust temperature. The running speed of the heat pump is positively correlated with the temperature of the heat pump, and the higher the running speed of the heat pump is, the higher the temperature of the heat pump is; the slower the operating speed of the heat pump, the lower the temperature of the heat pump itself. Therefore, the exhaust temperature is in positive correlation with the temperature of the heat pump, and the higher the temperature of the heat pump is, the higher the exhaust temperature is; the lower the temperature of the heat pump itself, the lower the exhaust temperature, which can be indicative of the temperature of the heat pump itself.
In the second aspect, the refrigerant exchanges heat with the heat pump in the heat pump, and the higher the temperature of the heat pump is, the more heat is obtained by the heat exchange of the refrigerant, and the higher the exhaust temperature is; the lower the temperature of the heat pump itself, the less heat is obtained by the heat exchange of the refrigerant, and the lower the exhaust temperature. It can be seen that the exhaust temperature is positively correlated with the temperature of the heat pump itself, which can be indicative of the temperature of the heat pump itself.
Therefore, the exhaust temperature can be used as a control target of the operation state of the heat pump radiator fan, and the operation state of the heat pump radiator fan is controlled according to the exhaust temperature. Illustratively, the operating state of the heat pump radiator fan includes on, off, and fan operating speed, among others. For example, when the exhaust temperature is high, the heat pump cooling fan is turned on; or when the exhaust temperature is lower, the heat pump cooling fan is stopped; or when the exhaust temperature is higher, the running speed of the fan is increased; alternatively, when the exhaust temperature is low, the operating speed of the fan is slowed. In practical application, the setting can be carried out according to the requirement.
According to the embodiment of the invention, the temperature condition of the heat pump can be obtained by detecting the exhaust temperature, so that the temperature of the heat pump can be accurately measured. According to the embodiment of the invention, the operation state of the heat pump cooling fan is controlled according to the exhaust temperature, namely the operation state of the heat pump cooling fan is controlled according to the temperature of the heat pump. Therefore, the embodiment of the invention realizes the accurate control of the heat dissipation of the heat pump, thereby accurately controlling the temperature of the heat pump. Compared with the prior art, the heat pump cooling fan has the advantages that the heat pump cooling effect is better, the energy consumption is lower, and the intelligent level of the operation of the heat pump cooling fan is improved.
Fig. 3 is a flowchart of another control method of a heat pump system according to an embodiment of the present invention. Referring to fig. 3, on the basis of the above embodiments, the operation state of the heat pump radiator fan optionally includes starting and stopping. The control method of the heat pump system includes the following steps.
S210, detecting the exhaust temperature T0 of the heat pump.
And S220, when the heat pump cooling fan is started, if the exhaust temperature T0 is less than a first temperature threshold T1, controlling the heat pump cooling fan to stop.
S230, when the heat pump cooling fan stops, if the exhaust temperature T0 is greater than a second temperature threshold T2, controlling the heat pump cooling fan to be started; wherein the first temperature threshold T1 is less than the second temperature threshold T2.
According to the embodiment of the invention, when the heat pump cooling fan is started, the exhaust temperature T0 is compared with the first temperature threshold T1 to control the heat pump cooling fan to stop; when the heat pump cooling fan stops, the exhaust temperature T0 is compared with the second temperature threshold T2, and hysteresis control of starting and stopping of the heat pump cooling fan is achieved. Therefore, the embodiment of the invention avoids the frequent start and stop of the heat pump cooling fan when the temperature of the heat pump fluctuates near the temperature threshold value, thereby being beneficial to the stable start and stop of the heat pump cooling fan.
With continued reference to fig. 3, on the basis of the above embodiments, optionally, after the heat pump starts to operate, the method further includes: the heat pump radiator fan is stopped. Because the temperature of the heat pump is generally lower when the heat pump starts to operate, and the detected exhaust temperature T0 is smaller than the first temperature threshold T1, the arrangement of the embodiment of the invention avoids the phenomenon of frequent start and stop that the heat pump cooling fan is started and then stopped immediately when the heat pump starts to operate, thereby being beneficial to the stable operation and low power consumption of the heat pump cooling fan.
Fig. 4 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention. Referring to fig. 4, on the basis of the above embodiments, the operation state of the heat pump radiator fan optionally includes starting and stopping. The control method of the heat pump system includes the following steps.
S310, detecting the exhaust temperature T0 of the heat pump.
And S320, if the exhaust temperature is greater than a third temperature threshold value T3, controlling the heat pump cooling fan to be started.
And S330, otherwise, controlling the heat pump cooling fan to stop.
According to the embodiment of the invention, the third temperature threshold T3 is set, and the exhaust temperature T0 is compared with the third temperature threshold T3 to control the start and stop of the heat pump cooling fan. The embodiment of the invention is arranged in such a way that the control mode of the heat pump cooling fan is simpler, the heat pump cooling fan is sensitive to the temperature change of the heat pump, and the high-efficiency heat dissipation of the heat pump is facilitated.
On the basis of the above embodiments, optionally, the heat pump cooling fan is a variable frequency fan; the operating state of the heat pump radiator fan includes a fan operating speed. It should be noted that, the embodiment of the present invention has various control manners for the operation speed of the heat pump cooling fan, and the control manners can be set according to needs in practical applications. Some typical control methods will be described below, but the present invention is not limited thereto.
Fig. 5 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention. On the basis of the foregoing embodiments, optionally, the method for controlling the operation speed of the heat pump cooling fan further includes: comparing the exhaust temperature to at least two temperature thresholds; determining the running speed of the heat pump cooling fan according to the comparison result of the exhaust temperature and the temperature threshold; the preset operation speed of the heat pump cooling fan comprises at least two types. Referring to fig. 5, the discharge air temperature is exemplarily compared with the seventh temperature threshold T7 and the eighth temperature threshold T8, respectively, and the preset operation speed of the heat pump radiator fan includes three kinds. The control method of the heat pump system includes the following steps.
S410, detecting the exhaust temperature T0 of the heat pump.
And S420, if the exhaust temperature T0 is less than a seventh temperature threshold T7, controlling the fan running speed to be V11.
And S430, if the exhaust temperature T0 is greater than or equal to the seventh temperature threshold T7 and less than the eighth temperature threshold T8, controlling the fan running speed to be V12.
And S440, if the exhaust temperature T0 is greater than the eighth temperature threshold T8, controlling the fan running speed to be V13.
Wherein T7 is less than T8, V11 is less than V12 is less than V13.
The faster the operation speed of the heat pump cooling fan is, the better the heat dissipation effect of the heat pump is, however, the larger the power consumption of the heat pump cooling fan is; the slower the operation speed of the heat pump cooling fan is, the lower the power consumption is, however, the worse the cooling effect of the heat pump is. According to the embodiment of the invention, the running speed of the heat pump cooling fan is controlled according to the exhaust temperature T0, so that the temperature of the heat pump is more accurately controlled, and the power consumption and the heat pump cooling effect of the heat pump cooling fan are favorably considered. The heat pump cooling fan provided by the embodiment of the invention is sensitive to the temperature change of the heat pump, and is beneficial to further improving the heat dissipation effect of the heat pump.
Fig. 6 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention. On the basis of the foregoing embodiments, optionally, the method for controlling the operation speed of the heat pump cooling fan further includes: determining the preset operation speed of the heat pump cooling fan according to the current operation speed of the heat pump cooling fan and the comparison result of the exhaust temperature and the temperature threshold; the preset operation speed of the heat pump cooling fan comprises at least two types. Referring to fig. 6, illustratively, the discharge air temperature is compared with a ninth temperature threshold T9 and a tenth temperature threshold T10, respectively, and the preset operation speeds of the heat pump radiator fan include two. The control method of the heat pump system includes the following steps.
S510, detecting the exhaust temperature T0 of the heat pump.
And S520, when the fan running speed is V15, if the exhaust temperature T0 is less than a ninth temperature threshold T9, controlling the fan running speed to be V14.
And S530, when the fan running speed is V14, if the exhaust temperature T0 is greater than a tenth temperature threshold T10, controlling the fan running speed to be V15.
Wherein T9 is less than T10, and V14 is less than V15.
The faster the operation speed of the heat pump cooling fan is, the better the heat dissipation effect of the heat pump is, however, the larger the power consumption of the heat pump cooling fan is; the slower the operation speed of the heat pump cooling fan is, the lower the power consumption is, however, the worse the cooling effect of the heat pump is. In the embodiment of the invention, when the operation speed of the cooling fan is higher, the exhaust temperature T0 is compared with the ninth temperature threshold T9 to control the operation speed of the cooling fan to be reduced; when the operation speed of the heat radiation fan is low, the exhaust temperature T0 is compared with a tenth temperature threshold T10 to control the operation speed of the heat radiation fan to be increased, and hysteresis control of low-speed operation and high-speed operation of the heat pump heat radiation fan is realized. Therefore, the embodiment of the invention not only realizes more accurate control of the temperature of the heat pump, but also is beneficial to giving consideration to the power consumption of the heat pump cooling fan and the heat pump cooling effect; and when the temperature of the heat pump fluctuates near the temperature threshold value, the frequent speed regulation of the heat pump cooling fan is avoided, so that the stable operation of the heat pump cooling fan is facilitated.
In the above embodiments, the number of the temperature thresholds is exemplarily shown to be two, and is not a limitation to the present invention. In other embodiments, the number of temperature thresholds may be three, four, five or more, and accordingly, more fan operating speeds may be provided to improve accurate control of the heat pump temperature.
On the basis of the above embodiments, optionally, the heat pump is a variable frequency heat pump. The control method of the heat pump system further includes: and controlling the operation speed of the heat pump according to the exhaust temperature. Wherein the exhaust temperature is used as a control target of the operation state of the heat pump cooling fan and a control target of the operation speed of the heat pump. Therefore, the embodiment of the invention does not need to respectively arrange two temperature sensors for controlling the heat pump and the heat pump cooling fan in the heat pump system, and only needs to arrange one temperature sensor in the heat pump system, thereby simplifying the structure of the heat pump system and reducing the cost.
It should be noted that, in the embodiments of the present invention, there are various control methods for the operation speed of the heat pump, and the control method may be set as needed in practical applications. Some typical control methods will be described below, but the present invention is not limited thereto.
Fig. 7 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention. Referring to fig. 7, on the basis of the above embodiments, the control method of the heat pump system optionally includes the following steps.
S610, detecting the exhaust temperature T0 of the heat pump.
And S620, controlling the running state of the heat pump cooling fan according to the exhaust temperature T0.
And S630, controlling the heat pump to operate at a first heat pump operation speed V21 when the heat pump starts to operate.
S640, if the exhaust temperature T0 is greater than a fourth temperature threshold T4, controlling the heat pump to operate at a second heat pump operation speed V22; wherein the first heat pump operating speed V21 is greater than the second heat pump operating speed V22.
The higher the running speed of the heat pump is, the better the heating effect of the heat pump is, the higher the exhaust temperature is, and the higher the power consumption of the heat pump is; the lower the operating speed of the heat pump, the lower the power consumption, but the lower the heating effect of the heat pump and the lower the exhaust temperature.
According to the embodiment of the invention, after the heat pump starts to operate, the heat pump operates at a high speed and heats quickly, and when the exhaust temperature T0 is greater than the fourth temperature threshold T4, the operation speed of the heat pump is reduced so as to maintain the circulation of the refrigerant in the pipeline, the power of the heat pump system is reduced, and the energy consumption is reduced. Therefore, the embodiment of the invention realizes that the rotating speed of the heat pump is adjusted according to the ambient temperature in the initial stage of starting the heat pump, avoids the influence of the ambient temperature on the drying effect, enables the clothes treatment equipment to keep higher drying efficiency even if the heat pump is started at a low temperature, and improves the user experience.
Fig. 8 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention. On the basis of the above embodiments, optionally, the exhaust gas temperature is compared with at least two temperature thresholds; determining the operation speed of the heat pump according to the comparison result of the exhaust temperature and the temperature threshold; wherein the preset operation speed of the heat pump includes at least two. Referring to fig. 8, the exhaust gas temperature is exemplarily compared with the eleventh and twelfth temperature thresholds T11 and T12, respectively, and the preset operation speeds of the heat pump include three. The control method of the heat pump system includes the following steps.
And S710, detecting the exhaust temperature T0 of the heat pump.
And S720, controlling the running state of the heat pump cooling fan according to the exhaust temperature T0.
And S730, if the exhaust temperature T0 is less than an eleventh temperature threshold T11, controlling the operation speed of the heat pump to be V25.
And S740, if the exhaust temperature T0 is greater than or equal to the eleventh temperature threshold T11 and smaller than the twelfth temperature threshold T12, controlling the operation speed of the heat pump to be V26.
And S750, if the exhaust temperature T0 is greater than the twelfth temperature threshold T12, controlling the operation speed of the heat pump to be V27.
Wherein T11 is less than T12, V25 is less than V26 is less than V27.
According to the embodiment of the invention, the operation speed of the heat pump is controlled according to the exhaust temperature T0, so that more accurate control of heating of the heat pump is realized, the power consumption of the heat pump and the heating effect of the heat pump are both considered, and the accurate control of the operation speed of the heat pump is improved. And the heat pump provided by the embodiment of the invention is sensitive to exhaust temperature change, and is beneficial to further improving the heating effect of the heat pump.
Fig. 9 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention. On the basis of the above embodiments, optionally, the exhaust gas temperature is compared with at least two temperature thresholds; determining the preset operation speed of the heat pump according to the current operation speed of the heat pump and the comparison result of the exhaust temperature and the temperature threshold; wherein the preset operation speed of the heat pump includes at least two. Referring to fig. 9, the exhaust gas temperature is illustratively compared to a fifth temperature threshold T5 and a sixth temperature threshold T6, respectively, and the preset operating speeds of the heat pump include two, a third heat pump operating speed V23 and a fourth heat pump operating speed V24, respectively. The control method of the heat pump system includes the following steps.
S810, detecting the exhaust temperature T0 of the heat pump.
And S820, controlling the operation state of the heat pump cooling fan according to the exhaust temperature T0.
And S830, when the heat pump operates at the third heat pump operating speed V23, if the exhaust temperature T0 is less than a fifth temperature threshold T5, controlling the heat pump to operate at a fourth heat pump operating speed V24.
And S840, when the heat pump operates at the fourth heat pump operation speed V24, if the exhaust temperature T0 is greater than the sixth temperature threshold T6, controlling the heat pump to operate at the third heat pump operation speed V23.
Wherein T5 is less than T6, and V24 is less than V23.
According to the embodiment of the invention, when the operation speed of the heat pump is higher, the exhaust temperature T0 is compared with the fifth temperature threshold T9 to control the operation speed of the heat pump to be reduced; when the operation speed of the heat pump is low, the exhaust temperature T0 is compared with a sixth temperature threshold T6 to control the operation speed of the heat pump to be increased, and hysteresis control of low-speed operation and high-speed operation of the heat pump is realized. Therefore, the embodiment of the invention not only realizes more accurate control on the operation speed of the heat pump, but also is beneficial to giving consideration to the power consumption of the heat pump and the heating effect of the heat pump; and when the exhaust temperature fluctuates near the temperature threshold value, the frequent speed regulation of the heat pump is avoided, so that the stable operation of the heat pump is facilitated.
Fig. 10 is a flowchart of a control method of a heat pump system according to another embodiment of the present invention. On the basis of the above embodiments, optionally, the control method of the heat pump system includes the following steps.
S910, detecting the exhaust temperature T0 of the heat pump.
And S920, when the fan running speed is V15, if the exhaust temperature T0 is less than a ninth temperature threshold T9, controlling the fan running speed to be V14.
And S930, when the fan running speed is V14, if the exhaust temperature T0 is greater than a tenth temperature threshold T10, controlling the fan running speed to be V15.
And S940, when the heat pump operates at the third heat pump operating speed V23, if the exhaust temperature T0 is less than a fifth temperature threshold T5, controlling the heat pump to operate at a fourth heat pump operating speed V24.
And S950, when the heat pump operates at the fourth heat pump operating speed V24, if the exhaust temperature T0 is greater than a sixth temperature threshold T6, controlling the heat pump to operate at a third heat pump operating speed V23.
Wherein, T9 is less than T10, V14 is less than V15, T5 is less than T6, and V24 is less than V23.
The embodiment of the invention adopts the exhaust temperature as the control target of the operation state of the heat pump cooling fan and the control target of the operation speed of the heat pump at the same time, and only one temperature sensor is needed to be arranged in the heat pump system, thereby simplifying the structure of the heat pump system and reducing the cost. The embodiment of the invention not only realizes more accurate control of the temperature of the heat pump, but also is beneficial to giving consideration to the power consumption of the heat pump cooling fan and the heat pump cooling effect; and when the temperature of the heat pump fluctuates near the temperature threshold value, the frequent speed regulation of the heat pump cooling fan is avoided, so that the stable operation of the heat pump cooling fan is facilitated. The embodiment of the invention not only realizes more accurate control on the operation speed of the heat pump, but also is beneficial to giving consideration to the power consumption of the heat pump and the heating effect of the heat pump; and when the exhaust temperature fluctuates near the temperature threshold value, the frequent speed regulation of the heat pump is avoided, so that the stable operation of the heat pump is facilitated.
The embodiment of the invention also provides a control device of the heat pump system. Fig. 11 is a schematic structural diagram of a control device of a heat pump system according to an embodiment of the present invention. Referring to fig. 11, the control device of the heat pump system includes: a temperature detection module 70 and a fan control module 80. The temperature sensing module 70 is used to sense the exhaust temperature of the heat pump. The fan control module 80 is configured to control an operation state of the heat pump radiator fan according to the exhaust temperature.
According to the embodiment of the invention, the exhaust temperature is detected by the temperature detection module, the temperature condition of the heat pump can be known, and the accurate measurement of the temperature of the heat pump is realized. The fan control module of the embodiment of the invention controls the running state of the heat pump cooling fan according to the exhaust temperature, namely controls the running state of the heat pump cooling fan according to the temperature of the heat pump. Therefore, the embodiment of the invention realizes the accurate control of the heat dissipation of the heat pump, thereby accurately controlling the temperature of the heat pump. Compared with the prior art, the heat pump cooling fan has the advantages that the heat pump cooling effect is better, the energy consumption is lower, and the intelligent level of the operation of the heat pump cooling fan is improved.
On the basis of the above embodiments, the operation state of the heat pump radiator fan optionally includes start, stop, and fan operation speed.
On the basis of the above embodiments, optionally, the fan control module includes a first fan stop sub-module and a first fan start sub-module. The first fan stopping submodule is used for controlling the heat pump cooling fan to stop if the exhaust temperature is smaller than a first temperature threshold value when the heat pump cooling fan is started. The first fan starting submodule is used for controlling the heat pump cooling fan to be started if the exhaust temperature is larger than a second temperature threshold when the heat pump cooling fan stops. Wherein the first temperature threshold is less than the second temperature threshold.
On the basis of the above embodiments, optionally, the fan control module includes a second fan stop sub-module and a second fan start sub-module. And the second fan starting submodule is used for controlling the heat pump radiating fan to be started when the exhaust temperature is greater than a third temperature threshold value. And the second fan stopping submodule is used for controlling the heat pump radiating fan to stop when the exhaust temperature is less than or equal to a third temperature threshold.
On the basis of the above embodiments, optionally, the heat pump cooling fan is a variable frequency fan. The fan control module is further configured to compare the exhaust temperature to at least two temperature thresholds; determining the running speed of the heat pump cooling fan according to the comparison result of the exhaust temperature and the temperature threshold; or determining the preset operation speed of the heat pump cooling fan according to the current operation speed of the heat pump cooling fan and the comparison result of the exhaust temperature and the temperature threshold; the preset operation speed of the heat pump cooling fan comprises at least two types.
On the basis of the above embodiments, optionally, the heat pump is a variable frequency heat pump. The control device of the heat pump system also comprises a heat pump control module, wherein the heat pump control module is used for controlling the heat pump to run at a first heat pump running speed when the heat pump starts to run; if the exhaust temperature is greater than the fourth temperature threshold, controlling the heat pump to operate at a second heat pump operation speed; wherein the first heat pump operating speed is greater than the second heat pump operating speed.
On the basis of the above embodiments, optionally, the heat pump is a variable frequency heat pump. The control device of the heat pump system further comprises a heat pump control module, wherein the heat pump control module is used for comparing the exhaust temperature with at least two temperature thresholds; determining the operation speed of the heat pump according to the comparison result of the exhaust temperature and the temperature threshold; or determining the preset operation speed of the heat pump according to the current operation speed of the heat pump and the comparison result of the exhaust temperature and the temperature threshold; wherein the preset operation speed of the heat pump includes at least two.
On the basis of the above embodiments, optionally, the heat pump control module comprises a first speed control module and a second speed control module. The first speed control module is used for controlling the heat pump to operate at a fourth heat pump operation speed if the exhaust temperature is lower than a fifth temperature threshold when the heat pump operates at a third heat pump operation speed. The second speed control module is used for controlling the heat pump to operate at a third heat pump operation speed if the exhaust temperature is greater than a sixth temperature threshold when the heat pump operates at a fourth heat pump operation speed. Wherein the fifth temperature threshold is lower than the sixth temperature threshold and the third heat pump operating speed is higher than the fourth heat pump operating speed.
The embodiment of the invention also provides the clothes treatment equipment. The laundry treating apparatus may be, for example, a dryer or a washer-dryer, etc. The laundry treating apparatus includes a heat pump system employing a control method of the heat pump system as provided in any of the embodiments of the present invention. The device can execute the method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A control method of a heat pump system including a heat pump and a heat pump radiator fan, characterized by comprising:
detecting an exhaust temperature of the heat pump;
and controlling the running state of the heat pump cooling fan according to the exhaust temperature.
2. The control method of the heat pump system according to claim 1, wherein the operating states of the heat pump radiator fan include on, off, and fan operating speed.
3. The control method of the heat pump system according to claim 2, wherein the operation state of the heat pump radiator fan includes on and off;
controlling the operation state of the heat pump cooling fan according to the exhaust temperature, comprising:
when the heat pump cooling fan is started, if the exhaust temperature is smaller than a first temperature threshold value, controlling the heat pump cooling fan to stop;
when the heat pump cooling fan stops, if the exhaust temperature is greater than a second temperature threshold value, controlling the heat pump cooling fan to be started;
wherein the first temperature threshold is less than the second temperature threshold.
4. The control method of the heat pump system according to claim 2, wherein the operation state of the heat pump radiator fan includes on and off;
controlling the operation state of the heat pump cooling fan according to the exhaust temperature, comprising:
if the exhaust temperature is greater than a third temperature threshold value, controlling the heat pump cooling fan to be started;
otherwise, controlling the heat pump cooling fan to stop.
5. The control method of the heat pump system according to claim 2, wherein the heat pump radiator fan is an inverter fan;
the operation state of the heat pump cooling fan comprises the fan operation speed;
controlling the operation state of the heat pump cooling fan according to the exhaust temperature, comprising:
the exhaust temperature is compared to at least two temperature thresholds;
determining the running speed of the heat pump cooling fan according to the comparison result of the exhaust temperature and the temperature threshold; or determining the preset operation speed of the heat pump cooling fan according to the current operation speed of the heat pump cooling fan and the comparison result of the exhaust temperature and the temperature threshold;
the preset operation speed of the heat pump cooling fan comprises at least two types.
6. The control method of the heat pump system according to claim 1, wherein the heat pump is an inverter heat pump;
the control method of the heat pump system further includes:
controlling the heat pump to operate at a first heat pump operating speed when the heat pump starts to operate;
if the exhaust temperature is greater than a fourth temperature threshold value, controlling the heat pump to operate at a second heat pump operation speed;
wherein the first heat pump operating speed is greater than the second heat pump operating speed.
7. The control method of the heat pump system according to claim 1, wherein the heat pump is an inverter heat pump;
the control method of the heat pump system further includes: the exhaust temperature is compared to at least two temperature thresholds;
determining the operation speed of the heat pump according to the comparison result of the exhaust temperature and the temperature threshold; or determining the preset operation speed of the heat pump according to the current operation speed of the heat pump and the comparison result of the exhaust temperature and the temperature threshold;
wherein the preset operation speeds of the heat pump include at least two.
8. The method of claim 7, wherein determining the preset operating speed of the heat pump according to the current operating speed of the heat pump and the comparison of the discharge temperature and the temperature threshold comprises:
when the heat pump operates at a third heat pump operating speed, if the exhaust temperature is less than a fifth temperature threshold, controlling the heat pump to operate at a fourth heat pump operating speed;
when the heat pump operates at a fourth heat pump operating speed, if the exhaust temperature is greater than a sixth temperature threshold, controlling the heat pump to operate at a third heat pump operating speed;
wherein the fifth temperature threshold is lower than the sixth temperature threshold, and the third heat pump operating speed is higher than the fourth heat pump operating speed.
9. A control device of a heat pump system, characterized by comprising:
the temperature detection module is used for detecting the exhaust temperature of the heat pump;
and the fan control module is used for controlling the running state of the heat pump cooling fan according to the exhaust temperature.
10. A laundry treating apparatus, comprising: a heat pump system; the heat pump system employs the control method of the heat pump system according to any one of claims 1 to 8.
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| CN201910824252.9A CN112442872A (en) | 2019-09-02 | 2019-09-02 | Control method and device of heat pump system and clothes treatment equipment |
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| CN201910824252.9A CN112442872A (en) | 2019-09-02 | 2019-09-02 | Control method and device of heat pump system and clothes treatment equipment |
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