EP3628936A1

EP3628936A1 - Heat pump air conditioning unit, and energy-saving control method therefor and control device thereof

Info

Publication number: EP3628936A1
Application number: EP18898439.7A
Authority: EP
Inventors: Yongfeng XU; Hongwei Li; Boqi LIANG; Qihui BU; Kongxiang WU; Shilong DONG; Xiaohong Wu
Original assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2018-01-03
Filing date: 2018-12-12
Publication date: 2020-04-01
Also published as: WO2019134485A1; CN108302712B; CN108302712A

Abstract

A heat pump air conditioning unit, and an energy-saving control method therefor and a control device thereof, said method comprising the following steps: acquiring an indoor temperature, and acquiring an absolute value of a temperature difference between the indoor temperature and a set temperature; determining if the absolute value of the temperature difference is lower than or equal to a preset threshold; and if the absolute value of the temperature difference is lower than or equal to the preset threshold, adjusting, according to the absolute value of the temperature difference, a target value corresponding to an average temperature of a pipe coil in an indoor heat exchanger, so as to adjust the output of an outdoor unit. The energy-saving control method can effectively solve the problem of an increased system energy consumption of the heat pump air conditioning unit caused by a high output of the outdoor unit when the indoor temperature is near the set temperature.

Description

FIELD

The present disclosure relates to the technical field of air conditioner, in particular, to an energy saving control method for a heat pump air conditioning unit, an energy saving control device for a heat pump air conditioning unit, and a heat pump air conditioning unit with the control device.

BACKGROUND

The heat pump air conditioning unit, especially the multi-split air conditioning unit, has the advantages of requiring no special personnel for maintenance, convenient operation and free control. Therefore, it is widely used in actual production and life. However, problems related to the energy consumption caused by the use of air conditioning unit have become troubles for the industry. Especially for the multi-split air conditioning unit, as the room temperature gradually approaches the set temperature in actual use, the system energy consumption increases due to a large output of the outdoor unit, thereby causing uneconomical operation.

SUMMARY

The present disclosure aims to solve at least one of the technical problems in the above-mentioned techniques to some extent. To this end, the first purpose of the present disclosure is to provide an energy saving control method for a heat pump air conditioning unit, which may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
The second purpose of the present disclosure is to provide a non-transitory computer readable storage medium.
The third purpose of the present disclosure is to provide an energy saving control device for heat pump air conditioning unit.
The fourth purpose of the present disclosure is to provide a heat pump air conditioning unit.
To achieve above purposes, an embodiment of a first aspect of the present disclosure provides an energy saving control method for a heat pump air conditioning unit. The method includes: obtaining an indoor temperature, and judging the indoor temperature; and adjusting a target value corresponding to an average coil temperature of an indoor heat exchanger according to a judging result to adjust an output of an outdoor unit.
According to the energy saving control method for a heat pump air conditioning unit in an embodiment of the present disclosure, an indoor temperature is obtained, the indoor temperature is judged, and a target value corresponding to an average coil temperature of an indoor heat exchanger is adjusted according to a judging result to adjust an output of an outdoor unit. Thus, the method may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
In addition, the energy saving control method for a heat pump air conditioning unit provided according to the above embodiment of the present disclosure may also have the following additional technical features:
According to an embodiment of the present disclosure, the judging the indoor temperature includes: obtaining an absolute value of a temperature difference between the indoor temperature and a set temperature; and judging whether the absolute value of the temperature difference is less than or equal to a preset threshold, and adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference, when the absolute value of the temperature difference is less than or equal to a preset threshold.
According to an embodiment of the present disclosure, the absolute value of the temperature difference is divided into a plurality of temperature intervals, and each of the temperature intervals corresponds to a target value, wherein the adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference includes: judging a temperature interval in which the absolute value of the temperature difference is located, and obtaining a corresponding target value according to the temperature interval in which the absolute value of the temperature difference is located.
According to an embodiment of the present disclosure, when the heat pump air conditioning unit is operating in a cooling mode, the adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference includes: judging whether the absolute value of the temperature difference is greater than or equal to a first preset temperature; taking a first temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the first preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a second preset temperature if the absolute value of the temperature difference is less than the first preset temperature, wherein the second preset temperature is less than the first preset temperature; taking a second temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the second preset temperature, wherein the second temperature threshold is greater than or equal to the first temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a third preset temperature if the absolute value of the temperature difference is less than the second preset temperature, wherein the third preset temperature is less than the second preset temperature; taking a third temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the third preset temperature, wherein the third temperature threshold is greater than or equal to the second temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a fourth preset temperature if the absolute value of the temperature difference is less than the third preset temperature, wherein the fourth preset temperature is less than the third preset temperature; taking a fourth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourth preset temperature, wherein the fourth temperature threshold is greater than or equal to the third temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a fifth preset temperature if the absolute value of the temperature difference is less than the fourth preset temperature, wherein the fifth preset temperature is less than the fourth preset temperature; taking a fifth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fifth preset temperature, wherein the fifth temperature threshold is greater than or equal to the fourth temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a sixth preset temperature if the absolute value of the temperature difference is less than the fifth preset temperature, wherein the sixth preset temperature is less than the fifth preset temperature; taking a sixth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the sixth preset temperature, wherein the sixth temperature threshold is greater than or equal to the fifth temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a seventh preset temperature if the absolute value of the temperature difference is less than the sixth preset temperature, wherein the seventh preset temperature is less than the sixth preset temperature; taking a seventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the seventh preset temperature, wherein the seventh temperature threshold is greater than or equal to the sixth temperature threshold; taking the indoor temperature as the target value if the absolute value of the temperature difference is less than the seventh preset temperature.
According to another embodiment of the present disclosure, when the heat pump air conditioning unit is operating in a heating mode, the adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference includes: judging whether the absolute value of the temperature difference is greater than or equal to an eighth preset temperature; taking an eighth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eighth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a ninth preset temperature if the absolute value of the temperature difference is less than the eighth preset temperature, wherein the ninth preset temperature is less than the eighth preset temperature; taking a ninth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the ninth preset temperature, wherein the ninth temperature threshold is less than or equal to the eighth temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a tenth preset temperature if the absolute value of the temperature difference is less than the ninth preset temperature, wherein the tenth preset temperature is less than the ninth preset temperature; taking a tenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the tenth preset temperature, wherein the tenth temperature threshold is less than or equal to the ninth temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to an eleventh preset temperature if the absolute value of the temperature difference is less than the tenth preset temperature, wherein the eleventh preset temperature is less than the tenth preset temperature; taking an eleventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eleventh preset temperature, wherein the eleventh temperature threshold is less than or equal to the tenth temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a twelfth preset temperature if the absolute value of the temperature difference is less than the eleventh preset temperature, wherein the twelfth preset temperature is less than the eleventh preset temperature; taking a twelfth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the twelfth preset temperature, wherein the twelfth temperature threshold is less than or equal to the eleventh temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a thirteenth preset temperature if the absolute value of the temperature difference is less than the twelfth preset temperature, wherein the thirteenth preset temperature is less than the twelfth preset temperature; taking a thirteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the thirteenth preset temperature, wherein the thirteenth temperature threshold is less than or equal to the twelfth temperature threshold; further judging whether the absolute value of the temperature difference is greater than or equal to a fourteenth preset temperature if the absolute value of the temperature difference is less than the thirteenth preset temperature, wherein the fourteenth preset temperature is less than the thirteenth preset temperature; taking a fourteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourteenth preset temperature, wherein the fourteenth temperature threshold is less than or equal to the thirteenth temperature threshold; taking the indoor temperature as the target value if the absolute value of the temperature difference is less than the fourteenth preset temperature.
To achieve above purposes, an embodiment of a second aspect of the present disclosure provides a non-transitory computer readable storage medium having stored therein a computer program that, when executed by a processor, causes the processor to perform above energy saving control method for heat pump air conditioning unit.
The non-transitory computer readable storage medium of the embodiment of the present disclosure, through performing above energy saving control method for heat pump air conditioning unit, may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
To achieve above purposes, an embodiment of a third aspect of the present disclosure provides an energy saving control device for a heat pump air conditioning unit. The device includes: an obtaining module, configured to obtain an indoor temperature; a judging module, configured to judge the indoor temperature; and a control module, configured to adjust a target value corresponding to an average coil temperature of an indoor heat exchanger according to a judging result to adjust an output of an outdoor unit.
According to the energy saving control device for a heat pump air conditioning unit in an embodiment of the present disclosure, an indoor temperature is obtained by the obtaining module, the indoor temperature is judged by the judging module, and a target value corresponding to an average coil temperature of an indoor heat exchanger is adjusted according to a judging result by the control module to adjust an output of an outdoor unit. Thus, the device may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
In addition, the energy saving control device for a heat pump air conditioning unit provided according to the above embodiment of the present disclosure may also have the following additional technical features:
According to an embodiment of the present disclosure, when judging the indoor temperature, the judging module is further configured to judge whether an absolute value of a temperature difference between the indoor temperature and a set temperature is less than or equal to a preset threshold; the control module is further configured to adjust a target value corresponding to an average coil temperature of an indoor heat exchanger according to the absolute value of the temperature difference, when the absolute value of the temperature difference is less than or equal to the preset threshold.
According to an embodiment of the present disclosure, the absolute value of the temperature difference is divided into a plurality of temperature intervals, and each of the temperature intervals corresponds to a target value, wherein when adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference, the control module is further configured to judge a temperature interval in which the absolute value of the temperature difference is located, and obtain a corresponding target value according to the temperature interval in which the absolute value of the temperature difference is located.
According to an embodiment of the present disclosure, when the heat pump air conditioning unit is operating in a cooling mode, the control module is further configured to: judge whether the absolute value of the temperature difference is greater than or equal to a first preset temperature; take a first temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the first preset temperature; further judge whether the absolute value of the temperature difference is greater than or equal to a second preset temperature if the absolute value of the temperature difference is less than the first preset temperature, wherein the second preset temperature is less than the first preset temperature; take a second temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the second preset temperature, wherein the second temperature threshold is greater than or equal to the first temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a third preset temperature if the absolute value of the temperature difference is less than the second preset temperature, wherein the third preset temperature is less than the second preset temperature; take a third temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the third preset temperature, wherein the third temperature threshold is greater than or equal to the second temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a fourth preset temperature if the absolute value of the temperature difference is less than the third preset temperature, wherein the fourth preset temperature is less than the third preset temperature; take a fourth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourth preset temperature, wherein the fourth temperature threshold is greater than or equal to the third temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a fifth preset temperature if the absolute value of the temperature difference is less than the fourth preset temperature, wherein the fifth preset temperature is less than the fourth preset temperature; take a fifth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fifth preset temperature, wherein the fifth temperature threshold is greater than or equal to the fourth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a sixth preset temperature if the absolute value of the temperature difference is less than the fifth preset temperature, wherein the sixth preset temperature is less than the fifth preset temperature; take a sixth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the sixth preset temperature, wherein the sixth temperature threshold is greater than or equal to the fifth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a seventh preset temperature if the absolute value of the temperature difference is less than the sixth preset temperature, wherein the seventh preset temperature is less than the sixth preset temperature; take a seventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the seventh preset temperature, wherein the seventh temperature threshold is greater than or equal to the sixth temperature threshold; take the indoor temperature as the target value if the absolute value of the temperature difference is less than the seventh preset temperature.
According to another embodiment of the present disclosure, when the heat pump air conditioning unit is operating in a heating mode, the control module is further configured to: judge whether the absolute value of the temperature difference is greater than or equal to an eighth preset temperature; take an eighth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eighth preset temperature; further judge whether the absolute value of the temperature difference is greater than or equal to a ninth preset temperature if the absolute value of the temperature difference is less than the eighth preset temperature, wherein the ninth preset temperature is less than the eighth preset temperature; take a ninth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the ninth preset temperature, wherein the ninth temperature threshold is less than or equal to the eighth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a tenth preset temperature if the absolute value of the temperature difference is less than the ninth preset temperature, wherein the tenth preset temperature is less than the ninth preset temperature; take a tenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the tenth preset temperature, wherein the tenth temperature threshold is less than or equal to the ninth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to an eleventh preset temperature if the absolute value of the temperature difference is less than the tenth preset temperature, wherein the eleventh preset temperature is less than the tenth preset temperature; take an eleventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eleventh preset temperature, wherein the eleventh temperature threshold is less than or equal to the tenth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a twelfth preset temperature if the absolute value of the temperature difference is less than the eleventh preset temperature, wherein the twelfth preset temperature is less than the eleventh preset temperature; take a twelfth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the twelfth preset temperature, wherein the twelfth temperature threshold is less than or equal to the eleventh temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a thirteenth preset temperature if the absolute value of the temperature difference is less than the twelfth preset temperature, wherein the thirteenth preset temperature is less than the twelfth preset temperature; take a thirteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the thirteenth preset temperature, wherein the thirteenth temperature threshold is less than or equal to the twelfth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a fourteenth preset temperature if the absolute value of the temperature difference is less than the thirteenth preset temperature, wherein the fourteenth preset temperature is less than the thirteenth preset temperature; take a fourteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourteenth preset temperature, wherein the fourteenth temperature threshold is less than or equal to the thirteenth temperature threshold; take the indoor temperature as the target value if the absolute value of the temperature difference is less than the fourteenth preset temperature.
To achieve above purposes, an embodiment of a fourth aspect of the present disclosure provides a heat pump air conditioning unit including above energy saving control device for a heat pump air conditioning unit.
The heat pump air conditioning unit of the embodiment of the present disclosure, through above energy saving control device for a heat pump air conditioning unit, may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a flow chart of an energy saving control method for heat pump air conditioning unit according to embodiments of the present disclosure;
Fig. 2 is a flow chart of an energy saving control method for heat pump air conditioning unit according to an embodiment of the present disclosure;
Fig. 3 is a flow chart of an energy saving control method for heat pump air conditioning unit according to another embodiment of the present disclosure;
Fig. 4 is a structural diagram of an energy saving control device for heat pump air conditioning unit according to embodiments of the present disclosure.

DETAILED DESCRIPTION

Below is detailed description of embodiments of the present disclosure, which are shown in the drawings. Throughout the drawings, same or similar reference signs identify same or similar elements or elements having same or similar functions. The embodiments described below in conjunction with the drawings are illustrative, i.e., the embodiments are intended to illustrate the present disclosure, but not to limit the present disclosure.
The energy saving control method for a heat pump air conditioning unit, the energy saving control device for a heat pump air conditioning unit, and the heat pump air conditioning unit with the control device provided according to the embodiments of the present disclosure are described with combination of the accompanying drawings.
Fig. 1 is a flow chart of an energy saving control method for heat pump air conditioning unit according to embodiments of the present disclosure.
As shown in Fig. 1, an energy saving control method for heat pump air conditioning unit of embodiments of the present disclosure may include steps of:

S1, obtaining an indoor temperature, and judging the indoor temperature; and
S2, adjusting, according to a judging result, a target value corresponding to an average coil temperature of an indoor heat exchanger, so as to adjust an output of an outdoor unit.

According to an embodiment of the present disclosure, the judging the indoor temperature may include: obtaining an absolute value of a temperature difference between the indoor temperature and a set temperature; and judging whether the absolute value of the temperature difference is less than or equal to a preset threshold, and adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference, when the absolute value of the temperature difference is less than or equal to a preset threshold. Among them, the set temperature may be calibrated according to the actual situation. For example, the user may set the temperature according to different seasons and different environments. The indoor temperature may be obtained by a temperature sensor placed on the heat pump air conditioning unit. The preset threshold may be calibrated according to the actual situation.
According to an embodiment of the present disclosure, the absolute value of the temperature difference may be divided into a plurality of temperature intervals, and each of the temperature intervals corresponds to a target value, wherein the adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference includes: judging a temperature interval in which the absolute value of the temperature difference is located, and obtaining a corresponding target value according to the temperature interval in which the absolute value of the temperature difference is located.
Specifically, during the operation of the heat pump air conditioning unit, an indoor temperature T1 is obtained in real time, and a set temperature T2 is obtained (the set temperature is a target temperature set according to the actual situation); a difference between the indoor temperature T1 and the set temperature T2 is calculated, and an absolute value of the difference is judged. If the absolute value of the temperature difference is less than or equal to the preset threshold, a temperature interval in which the absolute value of the temperature difference is located is judged, and a corresponding target value according to the temperature interval in which the absolute value of the temperature difference is located is obtained, so as to adjust an output of an outdoor unit according to the target value. For example, when the difference between the absolute values of the temperature differences is small, a target value corresponding to an average coil temperature of an indoor heat exchanger may be adjusted to be close to the indoor temperature, so as to adjust the output of the outdoor unit; when the difference between the absolute values of the temperature differences is large, a target value corresponding to an average coil temperature of an indoor heat exchanger may be adjusted to be larger or smaller (specifically, it may be adjusted according to the operation mode of the heat pump air conditioning unit). Therefore, this solves the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
In addition, in an embodiment of the present disclosure, the judging the indoor temperature may further include: obtaining an indoor temperature of each indoor unit that is turned on, and calculating an average temperature of the indoor unit that is turned on; and judging the average temperature, and adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to a judging result, so as to adjust the output of the outdoor unit. For example, when the difference between the average temperature of the indoor unit and the set value is not large, a target value corresponding to an average coil temperature of an indoor heat exchanger may be adjusted to be close to the indoor temperature, so as to adjust the output of the outdoor unit; when the difference between the average temperature of the indoor unit and the set value is large, a target value corresponding to an average coil temperature of an indoor heat exchanger may be adjusted to be larger or smaller (specifically, it may be adjusted according to the operation mode of the heat pump air conditioning unit).
The following is a detailed description of how to adjust the target value of the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference in different operating modes of the heat pump air conditioning unit.
According to an embodiment of the present disclosure, when the heat pump air conditioning unit is operating in a cooling mode, the adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference includes: judging whether the absolute value of the temperature difference is greater than or equal to a first preset temperature; taking a first temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the first preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a second preset temperature if the absolute value of the temperature difference is less than the first preset temperature; taking a second temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the second preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a third preset temperature if the absolute value of the temperature difference is less than the second preset temperature; taking a third temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the third preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a fourth preset temperature if the absolute value of the temperature difference is less than the third preset temperature; taking a fourth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a fifth preset temperature if the absolute value of the temperature difference is less than the fourth preset temperature; taking a fifth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fifth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a sixth preset temperature if the absolute value of the temperature difference is less than the fifth preset temperature; taking a sixth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the sixth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a seventh preset temperature if the absolute value of the temperature difference is less than the sixth preset temperature; taking a seventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the seventh preset temperature; taking an indoor temperature as the target value if the absolute value of the temperature difference is less than the seventh preset temperature.
Among them, the second preset temperature is less than the first preset temperature, the third preset temperature is less than the second preset temperature, the fourth preset temperature is less than the third preset temperature, the fifth preset temperature is less than the fourth preset temperature, the sixth preset temperature is less than the fifth preset temperature, and the seventh preset temperature is less than the sixth preset temperature, wherein the calibration may be performed according to actual conditions, for example, the first preset temperature is a ° C (constant), the second preset temperature is (a-0.5) ° C, the third preset temperature is (a-1) ° C, the fourth preset temperature is (a-1.5) ° C, the fifth preset temperature is (a-2) ° C, the sixth preset temperature is (a - 2.5) ° C, and the seventh preset temperature is (a-3) °C.
The second temperature threshold is greater than or equal to the first temperature threshold, the third temperature threshold is greater than or equal to the second temperature threshold, the fourth temperature threshold is greater than or equal to the third temperature threshold, the fifth temperature threshold is greater than or equal to the fourth temperature threshold, the sixth temperature threshold is greater than or equal to the fifth temperature threshold, and the seventh temperature threshold is greater than or equal to the sixth temperature threshold, and the calibration may be performed according to actual conditions.
It should be noted that the first preset temperature through the seventh preset temperature are positive values.
Specifically, as shown in Fig. 2, when the heat pump air conditioning unit is operating in a cooling mode, the adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference may include steps of:

S101, the heat pump air conditioning unit operating in a cooling mode;
S102, obtaining a difference T between an indoor temperature T1 and a set temperature T2, T=|T1-T2|;
S103, judging whether T ≥ the first preset temperature (e.g., the first preset temperature may be a) is established; if so, performing S104; if not, performing step S105;
S104, taking a first temperature threshold N1 as the target value;
S105, judging whether T ≥ the second preset temperature (e.g., the second preset temperature may be a-0.5) is established; if so, performing S106; if not, performing step S107;
S106, taking a second temperature threshold N2 as the target value;
S107, judging whether T ≥ the third preset temperature (e.g., the third preset temperature may be a-1) is established; if so, performing S108; if not, performing step S109;
S108, taking a third temperature threshold N3 as the target value;
S109, judging whether T ≥ the fourth preset temperature (e.g., the fourth preset temperature may be a-1.5) is established; if so, performing S110; if not, performing step Sill;
S110, taking a fourth temperature threshold N4 as the target value;
S111, judging whether T ≥ the fifth preset temperature (e.g., the fifth preset temperature may be a-2) is established; if so, performing S112; if not, performing step S113;
S112, taking a fifth temperature threshold N5 as the target value;
S113, judging whether T ≥ the sixth preset temperature (e.g., the sixth preset temperature may be a-2.5) is established; if so, performing S114; if not, performing step S115;
S114, taking a sixth temperature threshold N6 as the target value;
S115, judging whether T ≥ the seventh preset temperature (e.g., the seventh preset temperature may be a-3) is established; if so, performing S116; if not, performing step S117;
S116, taking a seventh temperature threshold N7 as the target value;
S117, taking the indoor temperature T1 as the target value.

It should be noted that when the indoor temperature is high (such as in summer), the heat pump air conditioning unit is operating in the cooling mode, that is, the indoor temperature T1 is greater than the set temperature T2, and the absolute value of the temperature difference between the indoor temperature T1 and the set temperature T2 is: T= T1-T2.
According to another embodiment of the present disclosure, when the heat pump air conditioning unit is operating in a heating mode, the adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference includes: judging whether the absolute value of the temperature difference is greater than or equal to an eighth preset temperature; taking a eighth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eighth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a ninth preset temperature if the absolute value of the temperature difference is less than the eighth preset temperature; taking a ninth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the ninth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a tenth preset temperature if the absolute value of the temperature difference is less than the ninth preset temperature; taking a tenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the tenth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to an eleventh preset temperature if the absolute value of the temperature difference is less than the tenth preset temperature; taking a eleventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eleventh preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a twelfth preset temperature if the absolute value of the temperature difference is less than the eleventh preset temperature; taking a twelfth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the twelfth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a thirteenth preset temperature if the absolute value of the temperature difference is less than the twelfth preset temperature; taking a thirteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the thirteenth preset temperature; further judging whether the absolute value of the temperature difference is greater than or equal to a fourteenth preset temperature if the absolute value of the temperature difference is less than the thirteenth preset temperature; taking a fourteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourteenth preset temperature; taking an indoor temperature as the target value if the absolute value of the temperature difference is less than the fourteenth preset temperature.
Among them, the ninth preset temperature is less than the eighth preset temperature, the tenth preset temperature is less than the ninth preset temperature, the eleventh preset temperature is less than the tenth preset temperature, the twelfth preset temperature is less than the eleventh preset temperature, the thirteenth preset temperature is less than the twelfth preset temperature, and the fourteenth preset temperature is less than the thirteenth preset temperature, wherein the calibration may be performed according to actual conditions, for example, the eighth preset temperature is b ° C (constant), the ninth preset temperature is (b-0.5) ° C, the tenth preset temperature is (b-1) ° C, the eleventh preset temperature is (b-1.5) ° C, the twelfth preset temperature is (b-2) ° C, the thirteenth preset temperature is (b-2.5) ° C, and the fourteenth preset temperature is (b-3) °C.
The ninth temperature threshold is less than or equal to the eighth temperature threshold, the tenth temperature threshold is less than or equal to the ninth temperature threshold, the eleventh temperature threshold is less than or equal to the tenth temperature threshold, the twelfth temperature threshold is less than or equal to the eleventh temperature threshold, the thirteenth temperature threshold is less than or equal to the twelfth temperature threshold, and the fourteenth temperature threshold is less than or equal to the thirteenth temperature threshold, and the calibration may be performed according to actual conditions.
It should be noted that the eighth preset temperature through the fourteenth preset temperature are all positive values; the values of the eighth preset temperature and the first preset temperature may be the same or different, and may be selected according to actual conditions, which is not limited herein.
Specifically, as shown in Fig. 3, when the heat pump air conditioning unit is operating in a heating mode, the adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference may include steps of:

S201, the heat pump air conditioning unit operating in a heating mode;
S202, obtaining a difference T0 between an indoor temperature T1 and a set temperature T2, T0=|T2-T1|;
S203, judging whether T0 ≥ the eighth preset temperature (e.g., the eighth preset temperature may be b) is established; if so, performing S204; if not, performing step S205;
S204, taking an eighth temperature threshold N8 as the target value;
S205, judging whether T0 ≥ the ninth preset temperature (e.g., the ninth preset temperature may be b-0.5) is established; if so, performing S206; if not, performing step S207;
S206, taking a ninth temperature threshold N9 as the target value;
S207, judging whether T0 ≥ the tenth preset temperature (e.g., the tenth preset temperature may be b-1) is established; if so, performing S208; if not, performing step S209;
S208, taking a tenth temperature threshold N10 as the target value;
S209, judging whether T0 ≥ the eleventh preset temperature (e.g., the eleventh preset temperature may be b-1.5) is established; if so, performing S210; if not, performing step S211;
S210, taking an eleventh temperature threshold N11 as the target value;
S211, judging whether T0 ≥ the twelfth preset temperature (e.g., the twelfth preset temperature may be b-2) is established; if so, performing S212; if not, performing step S213;
S212, taking a twelfth temperature threshold N12 as the target value;
S213, judging whether T0 ≥ the thirteenth preset temperature (e.g., the thirteenth preset temperature may be b-2.5) is established; if so, performing S214; if not, performing step S215;
S214, taking a thirteenth temperature threshold N13 as the target value;
S215, judging whether T0 ≥ the fourteenth preset temperature (e.g., the fourteenth preset temperature may be b-3) is established; if so, performing S216; if not, performing step S217;
S216, taking a fourteenth temperature threshold N14 as the target value;
S217, taking the indoor temperature T1 as the target value.

It should be noted that when the indoor temperature is low (such as in winter), the heat pump air conditioning unit is operating in the heating mode, that is, the indoor temperature T1 is less than the set temperature T2, and the absolute value of the temperature difference between the indoor temperature T1 and the set temperature T2 is: T0= T2-T1.
According to the above analysis, when the heat pump air conditioning unit is operating in the cooling mode, the larger the absolute value of the temperature difference, the smaller the target value, the smaller the absolute value of the temperature difference, and the larger the target value (close to the indoor temperature). When the heat pump air conditioning unit is operating in the heating mode, the larger the absolute value of the temperature difference, the larger the target value, the smaller the absolute value of the temperature difference, and the smaller the target value (close to the indoor temperature).
Therefore, the energy saving control method for heat pump air conditioning unit of embodiments of the present disclosure may adjust a target value corresponding to an average coil temperature of an indoor heat exchanger according to the indoor temperature for adjusting the output of the outdoor unit, which is simple and reliable with no need to increase costs, thereby not only solving the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature, but also being widely used in heat pump air conditioning units with adjustable capacity for realizing comprehensive energy-saving operation of the system so as to further save energy and reduce emissions.
In summary, according to the energy saving control method for a heat pump air conditioning unit in an embodiment of the present disclosure, an indoor temperature is obtained, the indoor temperature is judged, and a target value corresponding to an average coil temperature of an indoor heat exchanger is adjusted according to a judging result to adjust an output of an outdoor unit. Thus, the method may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
Fig. 4 is a structural diagram of an energy saving control device for heat pump air conditioning unit according to embodiments of the present disclosure. As shown in Fig. 4, an energy saving control device for heat pump air conditioning unit of embodiments of the present disclosure may include an obtaining module 10, a judging module 20 and a control module 30.
Among them, the obtaining module 10 is configured to obtain an indoor temperature; the judging module 20 is configured to judge the indoor temperature; and the control module 30 is configured to adjust a target value corresponding to an average coil temperature of an indoor heat exchanger according to a judging result to adjust an output of an outdoor unit.
According to an embodiment of the present disclosure, when judging the indoor temperature, the judging module 20 is further configured to judge whether an absolute value of a temperature difference between the indoor temperature and a set temperature is less than or equal to a preset threshold; the control module 30 is further configured to adjust a target value corresponding to an average coil temperature of an indoor heat exchanger according to the absolute value of the temperature difference, when the absolute value of the temperature difference is less than or equal to the preset threshold.
According to an embodiment of the present disclosure, the absolute value of the temperature difference is divided into a plurality of temperature intervals, and each of the temperature intervals corresponds to a target value, wherein when adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference, the control module 30 is further configured to judge a temperature interval in which the absolute value of the temperature difference is located, and obtain a corresponding target value according to the temperature interval in which the absolute value of the temperature difference is located.
According to an embodiment of the present disclosure, when the heat pump air conditioning unit is operating in a cooling mode, the control module 30 is further configured to: judge whether the absolute value of the temperature difference is greater than or equal to a first preset temperature; take a first temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the first preset temperature; further judge whether the absolute value of the temperature difference is greater than or equal to a second preset temperature if the absolute value of the temperature difference is less than the first preset temperature, wherein the second preset temperature is less than the first preset temperature; take a second temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the second preset temperature, wherein the second temperature threshold is greater than or equal to the first temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a third preset temperature if the absolute value of the temperature difference is less than the second preset temperature, wherein the third preset temperature is less than the second preset temperature; take a third temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the third preset temperature, wherein the third temperature threshold is greater than or equal to the second temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a fourth preset temperature if the absolute value of the temperature difference is less than the third preset temperature, wherein the fourth preset temperature is less than the third preset temperature; take a fourth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourth preset temperature, wherein the fourth temperature threshold is greater than or equal to the third temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a fifth preset temperature if the absolute value of the temperature difference is less than the fourth preset temperature, wherein the fifth preset temperature is less than the fourth preset temperature; take a fifth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fifth preset temperature, wherein the fifth temperature threshold is greater than or equal to the fourth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a sixth preset temperature if the absolute value of the temperature difference is less than the fifth preset temperature, wherein the sixth preset temperature is less than the fifth preset temperature; take a sixth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the sixth preset temperature, wherein the sixth temperature threshold is greater than or equal to the fifth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a seventh preset temperature if the absolute value of the temperature difference is less than the sixth preset temperature, wherein the seventh preset temperature is less than the sixth preset temperature; take a seventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the seventh preset temperature, wherein the seventh temperature threshold is greater than or equal to the sixth temperature threshold; take an indoor temperature as the target value if the absolute value of the temperature difference is less than the seventh preset temperature.
According to another embodiment of the present disclosure, when the heat pump air conditioning unit is operating in a heating mode, the control module 30 is further configured to: judge whether the absolute value of the temperature difference is greater than or equal to an eighth preset temperature; take an eighth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eighth preset temperature; further judge whether the absolute value of the temperature difference is greater than or equal to a ninth preset temperature if the absolute value of the temperature difference is less than the eighth preset temperature, wherein the ninth preset temperature is less than the eighth preset temperature; take a ninth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the ninth preset temperature, wherein the ninth temperature threshold is less than or equal to the eighth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a tenth preset temperature if the absolute value of the temperature difference is less than the ninth preset temperature, wherein the tenth preset temperature is less than the ninth preset temperature; take a tenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the tenth preset temperature, wherein the tenth temperature threshold is less than or equal to the ninth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to an eleventh preset temperature if the absolute value of the temperature difference is less than the tenth preset temperature, wherein the eleventh preset temperature is less than the tenth preset temperature; take an eleventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eleventh preset temperature, wherein the eleventh temperature threshold is less than or equal to the tenth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a twelfth preset temperature if the absolute value of the temperature difference is less than the eleventh preset temperature, wherein the twelfth preset temperature is less than the eleventh preset temperature; take a twelfth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the twelfth preset temperature, wherein the twelfth temperature threshold is less than or equal to the eleventh temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a thirteenth preset temperature if the absolute value of the temperature difference is less than the twelfth preset temperature, wherein the thirteenth preset temperature is less than the twelfth preset temperature; take a thirteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the thirteenth preset temperature, wherein the thirteenth temperature threshold is less than or equal to the twelfth temperature threshold; further judge whether the absolute value of the temperature difference is greater than or equal to a fourteenth preset temperature if the absolute value of the temperature difference is less than the thirteenth preset temperature, wherein the fourteenth preset temperature is less than the thirteenth preset temperature; take a fourteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourteenth preset temperature, wherein the fourteenth temperature threshold is less than or equal to the thirteenth temperature threshold; take an indoor temperature as the target value if the absolute value of the temperature difference is less than the fourteenth preset temperature.
It should be noted that for details not disclosed in the energy saving control device for a heat pump air conditioning unit according to the embodiment of the present disclosure, please refer to the details disclosed in the energy saving control method for a heat pump air conditioning unit according to the embodiment of the present disclosure, details are not described herein again.
According to the energy saving control device for a heat pump air conditioning unit in an embodiment of the present disclosure, an indoor temperature is obtained by the obtaining module, the indoor temperature is judged by the judging module, and a target value corresponding to an average coil temperature of an indoor heat exchanger is adjusted according to a judging result by the control module to adjust an output of an outdoor unit. Thus, the device may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
Further, the embodiment of the present disclosure also provides a non-transitory computer readable storage medium having stored therein a computer program that, when executed by a processor, causes the processor to perform above energy saving control method for heat pump air conditioning unit.
The non-transitory computer readable storage medium of the embodiment of the present disclosure, through performing above energy saving control method for heat pump air conditioning unit, may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
Furthermore, the embodiment of the present disclosure also provides a heat pump air conditioning unit including above energy saving control device for a heat pump air conditioning unit.
The heat pump air conditioning unit of the embodiment of the present disclosure, through above energy saving control device for a heat pump air conditioning unit, may effectively solve the problem of not saving energy caused by increase of energy consumption of the system due to a lager output of the outdoor unit for the heat pump air conditioning unit when the indoor temperature is close to the set temperature.
In the description of the present specification, the description with reference to the terms "an embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that specific features, structures, materials, or features described in connection with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or features described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined by those skilled in the art without contradicting each other.
Besides, the terms '1st', '2nd' are used only for description and shall not be interpreted as an indication or implication of relative importance or an implicit indication of the number of technical features. Thus, features defined with "first", "second" may include at least one such feature, either explicitly or implicitly. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.
Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code including one or more executable instructions for implementing the steps of a custom logic function or process, and the scope of the preferred embodiments of the present disclosure includes additional implementations in which functions may not be performed in the order shown or discussed, including in a substantially simultaneous manner or in reverse order depending on the functionality involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure pertain.
The logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer readable medium for use by or in connection with an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, apparatus, or device and execute instructions). For the purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with the instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer readable media include electrical connection (electronic device) having one or more wirings, portable computer disk cartridge (magnetic device), random access memory (RAM), read only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read-only memory (CDROM). Additionally, since a program can be obtained electronically, for example by optical scanning of paper or other medium, followed by editing, interpretation or, if necessary, processing in other suitable manner, and then storing it in computer memory, the computer readable medium can even be a paper or other suitable medium on which the program can be printed.
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware and in another embodiment, it can be implemented by any of the following techniques or combinations thereof well known in the art: discrete logic circuit with logic gates for implementing logic functions on data signals, ASIC with appropriate combinational logic gate, Programmable Gate Array (PGA), Field Programmable Gate Array (FPGA), etc..
It will be appreciated by those of ordinary skill in the art that all or part of the steps of implementing embodiments of the foregoing method may be performed by hardware related to the program instructions. The forgoing program may be stored in a computer readable storage medium, which, when executed, includes one or a combination of the steps of a method embodiment.
In addition, the functional units in the embodiments of the present disclosure can be integrated in one processing module or each unit may independently physically exist, or two or more units may be integrated into one module. The integrated modules can be implemented in the form of hardware, and can also be implemented in the form of a software functional module. If the integrated modules are implemented in the form of a software functional module and sold or used as an independent product, they can be stored in a computer-readable storage medium.
The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like. Although embodiments of the disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limiting the present disclosure. Changes, modifications, alterations and variations of the above-described embodiments may be made by those skilled in the art.
In the description of the present disclosure, it is to be noted that, a direction or a positional relationship indicated by terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on that shown in the accompanying drawings, is merely to describe the utility model and simplify the description and does not imply or suggest that the indicated apparatus or component must have a special direction or is constructed and operated in a special direction, and thus cannot be understood as a limit of the present disclosure.
In this disclosure, the terms 'install', 'interconnect', 'connect' and 'fix' should be understood from a broad extent. For instance, it may be connected in a fixed, removable or integrated manner; and it may be mechanically or electrically connected; and it may be directly or indirectly (via a media in between) connected; and it may be the inside of two elements in communication with each other or two elements interacting with each other. The ordinary artisans concerned may understand the specific meaning of terms in this disclosure according to specific circumstance.
In the present disclosure, the first feature "on" or "under" the second feature may be that the first feature may directly contact with the second feature, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. Moreover, the first feature is "above", "on" and "over" the second feature, which includes that the first feature is above or at an inclined top of the second feature, or only indicates that a horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "beneath" the second feature, which may be that the first feature is below and at an inclined bottom of the second feature, or only indicates that a horizontal height of the first feature is lower than that of the second feature.
Although embodiments of the disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limiting the present disclosure. Changes, modifications, alterations and variations of the above-described embodiments may be made by those skilled in the art.

Claims

An energy saving control method for heat pump air conditioning unit, comprising steps of:
obtaining an indoor temperature, and judging the indoor temperature; and

adjusting a target value corresponding to an average coil temperature of an indoor heat exchanger according to a judging result, so as to adjust an output of an outdoor unit.
The energy saving control method for heat pump air conditioning unit according to claim 1, wherein the step of judging the indoor temperature comprises:
obtaining an absolute value of a temperature difference between the indoor temperature and a set temperature; and

judging whether the absolute value of the temperature difference is less than or equal to a preset threshold, and adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference, when the absolute value of the temperature difference is less than or equal to the preset threshold.
The energy saving control method for heat pump air conditioning unit according to claim 2, wherein the absolute value of the temperature difference is divided into a plurality of temperature intervals, and each of the temperature intervals corresponds to a target value, wherein the step of adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference comprises:
judging a temperature interval in which the absolute value of the temperature difference is located; and

obtaining a corresponding target value according to the temperature interval in which the absolute value of the temperature difference is located.
The energy saving control method for heat pump air conditioning unit according to claim 2 or 3, wherein when the heat pump air conditioning unit is operating in a cooling mode, the step of adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference comprises:
judging whether the absolute value of the temperature difference is greater than or equal to a first preset temperature;

taking a first temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the first preset temperature;

further judging whether the absolute value of the temperature difference is greater than or equal to a second preset temperature if the absolute value of the temperature difference is less than the first preset temperature, wherein the second preset temperature is less than the first preset temperature;

taking a second temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the second preset temperature, wherein the second temperature threshold is greater than or equal to the first temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a third preset temperature if the absolute value of the temperature difference is less than the second preset temperature, wherein the third preset temperature is less than the second preset temperature;

taking a third temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the third preset temperature, wherein the third temperature threshold is greater than or equal to the second temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a fourth preset temperature if the absolute value of the temperature difference is less than the third preset temperature, wherein the fourth preset temperature is less than the third preset temperature;

taking a fourth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourth preset temperature, wherein the fourth temperature threshold is greater than or equal to the third temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a fifth preset temperature if the absolute value of the temperature difference is less than the fourth preset temperature, wherein the fifth preset temperature is less than the fourth preset temperature;

taking a fifth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fifth preset temperature, wherein the fifth temperature threshold is greater than or equal to the fourth temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a sixth preset temperature if the absolute value of the temperature difference is less than the fifth preset temperature, wherein the sixth preset temperature is less than the fifth preset temperature;

taking a sixth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the sixth preset temperature, wherein the sixth temperature threshold is greater than or equal to the fifth temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a seventh preset temperature if the absolute value of the temperature difference is less than the sixth preset temperature, wherein the seventh preset temperature is less than the sixth preset temperature;

taking a seventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the seventh preset temperature, wherein the seventh temperature threshold is greater than or equal to the sixth temperature threshold;

taking the indoor temperature as the target value if the absolute value of the temperature difference is less than the seventh preset temperature.
The energy saving control method for heat pump air conditioning unit according to claim 2 or 3, wherein when the heat pump air conditioning unit is operating in a heating mode, the step of adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference comprises:
judging whether the absolute value of the temperature difference is greater than or equal to a eighth preset temperature;

taking an eighth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eighth preset temperature;

further judging whether the absolute value of the temperature difference is greater than or equal to a ninth preset temperature if the absolute value of the temperature difference is less than the eighth preset temperature, wherein the ninth preset temperature is less than the eighth preset temperature;

taking a ninth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the ninth preset temperature, wherein the ninth temperature threshold is less than or equal to the eighth temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a tenth preset temperature if the absolute value of the temperature difference is less than the ninth preset temperature, wherein the tenth preset temperature is less than the ninth preset temperature;

taking a tenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the tenth preset temperature, wherein the tenth temperature threshold is less than or equal to the ninth temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to an eleventh preset temperature if the absolute value of the temperature difference is less than the tenth preset temperature, wherein the eleventh preset temperature is less than the tenth preset temperature;

taking an eleventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eleventh preset temperature, wherein the eleventh temperature threshold is less than or equal to the tenth temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a twelfth preset temperature if the absolute value of the temperature difference is less than the eleventh preset temperature, wherein the twelfth preset temperature is less than the eleventh preset temperature;

taking a twelfth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the twelfth preset temperature, wherein the twelfth temperature threshold is less than or equal to the eleventh temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a thirteenth preset temperature if the absolute value of the temperature difference is less than the twelfth preset temperature, wherein the thirteenth preset temperature is less than the twelfth preset temperature;

taking a thirteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the thirteenth preset temperature, wherein the thirteenth temperature threshold is less than or equal to the twelfth temperature threshold;

further judging whether the absolute value of the temperature difference is greater than or equal to a fourteenth preset temperature if the absolute value of the temperature difference is less than the thirteenth preset temperature, wherein the fourteenth preset temperature is less than the thirteenth preset temperature;

taking a fourteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourteenth preset temperature, wherein the fourteenth temperature threshold is less than or equal to the thirteenth temperature threshold;

taking the indoor temperature as the target value if the absolute value of the temperature difference is less than the fourteenth preset temperature.
A non-transitory computer readable storage medium having stored therein a computer program that, when executed by a processor, causes the processor to perform an energy saving control method for heat pump air conditioning unit according to any one of claims 1 to 5.
An energy saving control device for heat pump air conditioning unit, comprising:
an obtaining module, configured to obtain an indoor temperature;

a judging module, configured to judge the indoor temperature; and

a control module, configured to adjust a target value corresponding to an average coil temperature of an indoor heat exchanger according to a judging result, so as to adjust an output of an outdoor unit.
The energy saving control device for heat pump air conditioning unit according to claim 7, wherein when judging the indoor temperature, the judging module is further configured to
judge whether an absolute value of a temperature difference between the indoor temperature and a set temperature is less than or equal to a preset threshold;
the control module is further configured to adjust the target value corresponding to an average coil temperature of an indoor heat exchanger according to the absolute value of the temperature difference, when the absolute value of the temperature difference is less than or equal to the preset threshold.
The energy saving control device for heat pump air conditioning unit according to claim 8, wherein the absolute value of the temperature difference is divided into a plurality of temperature intervals, and each of the temperature intervals corresponds to a target value, wherein when adjusting the target value corresponding to the average coil temperature of the indoor heat exchanger according to the absolute value of the temperature difference, the control module is further configured to judge a temperature interval in which the absolute value of the temperature difference is located, and obtain a corresponding target value according to the temperature interval in which the absolute value of the temperature difference is located.
The energy saving control device for heat pump air conditioning unit according to claim 8 or 9, wherein when the heat pump air conditioning unit is operating in a cooling mode, the control module is further configured to
judge whether the absolute value of the temperature difference is greater than or equal to a first preset temperature;
take a first temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the first preset temperature;
further judge whether the absolute value of the temperature difference is greater than or equal to a second preset temperature if the absolute value of the temperature difference is less than the first preset temperature, wherein the second preset temperature is less than the first preset temperature;
take a second temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the second preset temperature, wherein the second temperature threshold is greater than or equal to the first temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a third preset temperature if the absolute value of the temperature difference is less than the second preset temperature, wherein the third preset temperature is less than the second preset temperature;
take a third temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the third preset temperature, wherein the third temperature threshold is greater than or equal to the second temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a fourth preset temperature if the absolute value of the temperature difference is less than the third preset temperature, wherein the fourth preset temperature is less than the third preset temperature;
take a fourth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourth preset temperature, wherein the fourth temperature threshold is greater than or equal to the third temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a fifth preset temperature if the absolute value of the temperature difference is less than the fourth preset temperature, wherein the fifth preset temperature is less than the fourth preset temperature;
take a fifth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fifth preset temperature, wherein the fifth temperature threshold is greater than or equal to the fourth temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a sixth preset temperature if the absolute value of the temperature difference is less than the fifth preset temperature, wherein the sixth preset temperature is less than the fifth preset temperature;
take a sixth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the sixth preset temperature, wherein the sixth temperature threshold is greater than or equal to the fifth temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a seventh preset temperature if the absolute value of the temperature difference is less than the sixth preset temperature, wherein the seventh preset temperature is less than the sixth preset temperature;
take a seventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the seventh preset temperature, wherein the seventh temperature threshold is greater than or equal to the sixth temperature threshold;
take the indoor temperature as the target value if the absolute value of the temperature difference is less than the seventh preset temperature.
The energy saving control device for heat pump air conditioning unit according to claim 8 or 9, wherein when the heat pump air conditioning unit is operating in a heating mode, the control module is further configured to
judge whether the absolute value of the temperature difference is greater than or equal to an eighth preset temperature;
take an eighth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eighth preset temperature;
further judge whether the absolute value of the temperature difference is greater than or equal to a ninth preset temperature if the absolute value of the temperature difference is less than the eighth preset temperature, wherein the ninth preset temperature is less than the eighth preset temperature;
take a ninth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the ninth preset temperature, wherein the ninth temperature threshold is less than or equal to the eighth temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a tenth preset temperature if the absolute value of the temperature difference is less than the ninth preset temperature, wherein the tenth preset temperature is less than the ninth preset temperature;
take a tenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the tenth preset temperature, wherein the tenth temperature threshold is less than or equal to the ninth temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to an eleventh preset temperature if the absolute value of the temperature difference is less than the tenth preset temperature, wherein the eleventh preset temperature is less than the tenth preset temperature;
take an eleventh temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the eleventh preset temperature, wherein the eleventh temperature threshold is less than or equal to the tenth temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a twelfth preset temperature if the absolute value of the temperature difference is less than the eleventh preset temperature, wherein the twelfth preset temperature is less than the eleventh preset temperature;
take a twelfth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the twelfth preset temperature, wherein the twelfth temperature threshold is less than or equal to the eleventh temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a thirteenth preset temperature if the absolute value of the temperature difference is less than the twelfth preset temperature, wherein the thirteenth preset temperature is less than the twelfth preset temperature;
take a thirteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the thirteenth preset temperature, wherein the thirteenth temperature threshold is less than or equal to the twelfth temperature threshold;
further judge whether the absolute value of the temperature difference is greater than or equal to a fourteenth preset temperature if the absolute value of the temperature difference is less than the thirteenth preset temperature, wherein the fourteenth preset temperature is less than the thirteenth preset temperature;
take a fourteenth temperature threshold as the target value if the absolute value of the temperature difference is greater than or equal to the fourteenth preset temperature, wherein the fourteenth temperature threshold is less than or equal to the thirteenth temperature threshold;
take the indoor temperature as the target value if the absolute value of the temperature difference is less than the fourteenth preset temperature.
A heat pump air conditioning unit, comprising an energy saving control device for heat pump air conditioning unit according to any one of claims 7 to 11.