CN107560313B - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
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- CN107560313B CN107560313B CN201710915407.0A CN201710915407A CN107560313B CN 107560313 B CN107560313 B CN 107560313B CN 201710915407 A CN201710915407 A CN 201710915407A CN 107560313 B CN107560313 B CN 107560313B
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Abstract
The invention discloses a refrigerator and a control method thereof, wherein the refrigerator comprises: the hot water pipeline is communicated with the water inlet pipeline and is provided with a hot water valve and a heating unit, when the hot water valve is opened, water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline; the cold water pipeline is communicated with the water inlet pipeline and is provided with a cold water valve and a cold water tank, and water in the water inlet pipeline flows into the cold water tank through the cold water pipeline when the cold water valve is opened; the water outlet pipeline is respectively communicated with the hot water pipeline and the cold water pipeline and is provided with a water outlet valve; a pressure detection unit detecting an externally applied pressure to generate a detection pressure; the control unit controls the hot water valve and the water outlet valve to be opened and the cold water valve to be closed when the detected pressure is greater than the preset pressure, controls the heating unit to heat, controls the water outlet valve to be opened and controls the hot water valve and the cold water valve to be closed when the detected pressure is less than or equal to the preset pressure, and accordingly carries out instant heating on water flowing into a hot water pipeline through the heating unit to obtain hot water.
Description
Technical Field
The invention relates to the field of electric appliances, in particular to a refrigerator, a control method of the refrigerator and a non-transitory computer readable storage medium.
Background
In the related art, a refrigerator can provide cold or hot drinking water. However, the related art has problems that the refrigerator provides hot drinking water, which is generally heated by heat released from a condenser in a refrigeration system of the refrigerator, and the heating speed is slow; after the hot drinking water is prepared, a separate hot water tank is usually required for storing and keeping the hot drinking water warm, so that additional storage space is required. In addition, most refrigerators provide hot drinking water with a temperature that is not adjustable, and a user can only select cold drinking water or hot drinking water.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a refrigerator capable of adjusting the temperature of the outlet water according to the user's needs and increasing the heating speed of the hot water.
Another object of the present invention is to provide a control method of a refrigerator.
It is yet another object of the invention to provide a non-transitory computer readable storage medium.
In order to achieve the above object, an embodiment of the present invention provides a refrigerator, including: a water inlet pipeline; the hot water pipeline is communicated with the water inlet pipeline, a hot water valve and a heating unit are arranged on the hot water pipeline, when the hot water valve is opened, water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline; the cold water pipeline is communicated with the water inlet pipeline, and is provided with a cold water valve and a cold water tank, wherein when the cold water valve is opened, water in the water inlet pipeline flows into the cold water tank through the cold water pipeline, and the cold water tank cools the inflowing water and stores cold water; the water outlet pipeline is communicated with the hot water pipeline, the water outlet pipeline is communicated with the cold water pipeline, and a water outlet valve is arranged on the water outlet pipeline; a pressure detection unit for detecting an externally applied pressure to generate a detection pressure; the control unit is respectively connected with the pressure detection unit, the heating unit, the hot water valve, the cold water valve and the water outlet valve, and is used for controlling the hot water valve and the water outlet valve to be opened and controlling the cold water valve to be closed when the detection pressure is greater than the preset pressure, controlling the heating unit to heat so as to provide hot water through the water outlet pipeline, and controlling the water outlet valve to be opened and controlling the hot water valve and the cold water valve to be closed when the detection pressure is less than or equal to the preset pressure so as to provide the cold water through the water outlet pipeline.
According to the refrigerator provided by the embodiment of the invention, a hot water pipeline is communicated with a water inlet pipeline, a hot water valve and a heating unit are arranged on the hot water pipeline, water in the water inlet pipeline flows into the hot water pipeline when the hot water valve is opened, the heating unit heats the water flowing into the hot water pipeline, a cold water pipeline is communicated with the water inlet pipeline, a cold water valve and a cold water tank are arranged on the cold water pipeline, the water in the water inlet pipeline flows into the cold water tank through the cold water pipeline when the cold water valve is opened, the cold water tank cools the inflowing water and stores cold water, a water outlet pipeline is communicated with the hot water pipeline, the water outlet pipeline is communicated with the cold water pipeline, a water outlet valve is arranged on the water outlet pipeline, the externally applied pressure is detected through a pressure detection unit to generate detection pressure, and a control unit controls the hot water valve and the water outlet valve to be opened and controls, the hot water is provided through the water outlet pipeline, and when the detected pressure is less than or equal to the preset pressure, the water control valve is opened, and the hot water valve and the cold water valve are controlled to be closed, so that cold water is provided through the water outlet pipeline. Therefore, the refrigerator provided by the embodiment of the invention can provide cold water and hot water, when hot water is provided, the water flowing into the hot water pipeline is subjected to instant heating through the heating unit, the hot water heating speed is increased, the hot water is rapidly provided, a hot water supply water tank is not required to be provided for storing hot water, the space is effectively saved, and the heating energy consumption is reduced. In addition, the pressure sensor is used for judging whether the user selects cold water or hot water, so that the structure is simple and the operation is convenient.
According to an embodiment of the present invention, when the detected pressure is greater than a preset pressure, the control unit may be further configured to obtain a target outlet water temperature according to the detected pressure, and control the heating power of the heating unit according to the target outlet water temperature.
According to an embodiment of the present invention, the refrigerator may further include: a first temperature detection unit for detecting a water temperature at an inlet of the water inlet pipe to generate a first water temperature; the second temperature detection unit is used for detecting the water temperature of the water outlet pipeline to generate a second water temperature; the control unit is further configured to calculate an initial heating power of the heating unit according to the target outlet water temperature and the first water temperature, and adjust the heating power of the heating unit according to the second water temperature and the target outlet water temperature after controlling the heating unit to heat according to the initial heating power.
According to an embodiment of the present invention, the control unit may calculate the initial heating power of the heating unit according to the following formula:
Q1＝C*M*(K2*(n-N)-t1)/K1
wherein Q1 is the initial heating power of the heating unit, C is the specific heat capacity of water, M is the mass flow rate of water in the hot water pipeline, N is the detection pressure, N is the preset pressure, K2 pressure-water temperature conversion coefficient, t1 is the first water temperature, and K1 is the thermal conversion efficiency of the heating unit.
According to an embodiment of the present invention, when the second water temperature is greater than the sum of the target outlet water temperature and a preset water temperature, the control unit controls the heating power of the heating unit to decrease; when the second water temperature is smaller than the difference between the target outlet water temperature and a preset water temperature, the control unit controls the heating power of the heating unit to be increased; and when the second water temperature is greater than or equal to the difference between the target outlet water temperature and the preset water temperature and is less than or equal to the sum of the target outlet water temperature and the preset water temperature, the control unit controls the heating power of the heating unit to be kept unchanged.
According to an embodiment of the present invention, the control unit may be further configured to control the outlet valve and the hot water valve to be closed when the supply of the hot water is stopped, and control the heating unit to stop heating.
According to an embodiment of the present invention, the control unit may be further configured to control the outlet valve to be closed when the supply of the cold water is stopped, and to control the cold water valve to be opened after a delay of a preset time, and to control the cold water valve to be closed when the water level of the cold water tank reaches a preset water level.
In order to achieve the above object, a control method for a refrigerator according to another embodiment of the present invention includes a water inlet pipeline, a hot water pipeline, a cold water pipeline, and a water outlet pipeline, where the hot water pipeline is communicated with the water inlet pipeline, the hot water pipeline is provided with a hot water valve and a heating unit, the cold water pipeline is communicated with the water inlet pipeline, the cold water pipeline is provided with a cold water valve and a cold water tank, the water outlet pipeline is communicated with the hot water pipeline, the water outlet pipeline is communicated with the cold water pipeline, and the water outlet pipeline is provided with a water outlet valve, and the method includes the following steps: detecting an externally applied pressure to generate a detected pressure; when the detected pressure is higher than a preset pressure, controlling the hot water valve and the water outlet valve to be opened and controlling the cold water valve to be closed, and controlling the heating unit to heat so as to provide hot water through the water outlet pipeline, wherein when the hot water valve is opened, water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline; and when the detected pressure is less than or equal to the preset pressure, controlling the water outlet valve to be opened and controlling the hot water valve and the cold water valve to be closed so as to provide cold water through the water outlet pipeline, wherein when the cold water valve is opened, water in the water inlet pipeline flows into the cold water tank through the cold water pipeline, and the cold water tank cools the inflowing water and stores the cold water.
According to the control method of the refrigerator provided by the embodiment of the invention, the detection pressure is generated by detecting the externally applied pressure, when the detection pressure is greater than the preset pressure, the hot water valve and the water outlet valve are controlled to be opened, the cold water valve is controlled to be closed, the heating unit is controlled to heat, so that hot water is provided through the water outlet pipeline, when the hot water valve is opened, water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline; when the detected pressure is less than or equal to the preset pressure, the water outlet valve is controlled to be opened, and the hot water valve and the cold water valve are controlled to be closed, so that cold water is provided through the water outlet pipeline, when the cold water valve is opened, water in the water inlet pipeline flows into the cold water tank through the cold water pipeline, and the cold water tank cools the inflowing water and stores the cold water. Therefore, the control method of the refrigerator provided by the embodiment of the invention can provide cold water and hot water, when the hot water is provided, the water flowing into the hot water pipeline is subjected to instant heating to obtain the hot water, the heating speed is high, a hot water supply water tank is not required to be provided for storing the hot water, the space is effectively saved, and the heating energy consumption is reduced.
According to an embodiment of the present invention, when the detected pressure is greater than a preset pressure, the method may further include: and acquiring a target outlet water temperature according to the detection pressure, and controlling the heating power of the heating unit according to the target outlet water temperature.
According to an embodiment of the present invention, the control method of the refrigerator may further include: detecting a water temperature at an inlet of the water inlet line to generate a first water temperature; detecting the water temperature of a water outlet of the water outlet pipeline to generate a second water temperature; calculating the initial heating power of the heating unit according to the target outlet water temperature and the first water temperature; and after controlling the heating unit to heat according to the initial heating power, adjusting the heating power of the heating unit according to the second water temperature and the target outlet water temperature.
According to an embodiment of the present invention, the initial heating power of the heating unit may be calculated according to the following formula:
Q1＝C*M*(K2*(n-N)-t1)/K1
wherein Q1 is the initial heating power of the heating unit, C is the specific heat capacity of water, M is the mass flow rate of water in the hot water pipeline, N is the detection pressure, N is the preset pressure, K2 pressure-water temperature conversion coefficient, t1 is the first water temperature, and K1 is the thermal conversion efficiency of the heating unit.
According to an embodiment of the invention, the control method of the refrigerator controls the heating power of the heating unit to be reduced when the second water temperature is greater than the sum of the target outlet water temperature and a preset water temperature; when the second water temperature is smaller than the difference between the target outlet water temperature and a preset water temperature, controlling the heating power of the heating unit to be increased; and when the second water temperature is greater than or equal to the difference between the target outlet water temperature and the preset water temperature and is less than or equal to the sum of the target outlet water temperature and the preset water temperature, controlling the heating power of the heating unit to be kept unchanged.
According to an embodiment of the present invention, the control method of the refrigerator may further include: and when the hot water supply is stopped, controlling the water outlet valve and the hot water valve to be closed, and controlling the heating unit to stop heating.
According to an embodiment of the present invention, the control method of the refrigerator may further include: and controlling the water outlet valve to be closed when the cold water supply is stopped, controlling the cold water valve to be opened after delaying preset time, and controlling the cold water valve to be closed when the water level of the cold water tank reaches a preset water level.
To achieve the above object, a non-transitory computer-readable storage medium according to another embodiment of the present invention stores thereon a computer program, which when executed by a processor, implements the control method of the refrigerator.
According to the non-transitory computer-readable storage medium provided by the embodiment of the invention, the control method of the refrigerator is realized, the water flowing into the hot water pipeline is subjected to instant heating to obtain the hot water, the heating speed is high, a hot water supply water tank is not required to be provided for storing the hot water, the space is effectively saved, and the heating energy consumption is reduced.
Drawings
Fig. 1 is a block schematic view of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a refrigerator according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of a refrigerator according to an embodiment of the present invention;
fig. 4 is a flowchart of a control method of a refrigerator according to one embodiment of the present invention;
fig. 5 is a flowchart of a control method of a refrigerator according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A refrigerator and a control method of the refrigerator according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a block schematic view of a refrigerator according to an embodiment of the present invention. As shown in fig. 1 and 2, a refrigerator according to an embodiment of the present invention includes: a water inlet pipeline 10, a hot water pipeline 20, a cold water pipeline 30, a water outlet pipeline 40, a pressure detection unit 50 and a control unit 60.
Wherein, the hot water pipeline 20 is communicated with the water inlet pipeline 10, and the hot water pipeline 20 is provided with a hot water valve 21 and a heating unit 22, wherein, when the hot water valve 21 is opened, the water in the water inlet pipeline 10 flows into the hot water pipeline 20, and the heating unit 22 heats the water flowing into the hot water pipeline 20. According to one embodiment of the present invention, the heating unit 22 may be a tankless heater, and the water inlet line 10 may be a normal temperature water.
The cold water pipeline 30 is communicated with the water inlet pipeline 10, and the cold water pipeline 30 is provided with a cold water valve 31 and a cold water tank 32, wherein when the cold water valve 31 is opened, water in the water inlet pipeline 10 flows into the cold water tank 32 through the cold water pipeline 30, and the cold water tank 32 cools the inflowing water and stores cold water. The water outlet pipeline 40 is communicated with the hot water pipeline 20, the water outlet pipeline 40 is communicated with the cold water pipeline 30, and the water outlet pipeline 40 is provided with a water outlet valve 41. Wherein the cold water tank 32 may be provided in a non-freezing chamber of the refrigerator.
The pressure detecting unit 50 serves to detect an externally applied pressure to generate a detection pressure. Wherein, a user can receive water from the water outlet of the water outlet pipeline 40, and the pressure detecting unit 50 can be disposed at the water outlet of the water outlet pipeline 40, so that the user can apply pressure when receiving water. Specifically, a pressure receiving assembly for receiving pressure applied by a user may be disposed outside the refrigerator and near the water outlet of the water outlet pipeline 40, and the pressure detecting unit 50 may detect the pressure applied on the pressure receiving assembly to generate a detection pressure.
The control unit 60 is respectively connected to the pressure detection unit 50, the heating unit 22, the hot water valve 21, the cold water valve 31 and the water outlet valve 41, and the control unit 60 is configured to control the hot water valve 21 and the water outlet valve 41 to be opened and the cold water valve 31 to be closed when the detected pressure is greater than the preset pressure, control the heating unit 22 to heat water to provide hot water through the water outlet pipeline 40, and control the water outlet valve 41 to be opened and the hot water valve 21 and the cold water valve 31 to be closed when the detected pressure is less than or equal to the preset pressure, so that cold water is provided through the water outlet pipeline 40.
According to an embodiment of the present invention, the control unit 60 judges that the user has a water demand when the pressure detection unit 50 detects the externally applied pressure.
It should be noted that the outlet line 40 is respectively connected to the hot water line 20 and the cold water line 30, the outlet valve 41 can be disposed on the outlet line 40, when the outlet valve 41 is opened and both the hot water valve 21 and the cold water valve 31 are closed, the cold water flows out from the cold water tank 32 to provide the cold water through the outlet line 40, and when the outlet valve 41 and the hot water valve 21 are opened and the cold water valve 31 is closed, the cold water and the hot water respectively flow out from the cold water line 30 and the hot water line 20 to provide the hot water through the outlet line 40 (i.e., the mixed water of the cold water line 20 and the hot water line 30). In some embodiments of the present invention, the hot water is water with a temperature higher than that of the cold water, and the normal temperature water is water with a temperature equal to that of the external environment.
Specifically, when the detected pressure is greater than the preset pressure, it is determined that the user needs hot water, the control unit 60 controls the hot water valve 21 and the water outlet valve 41 to be opened and the cold water valve 31 to be closed, and controls the heating unit 22 to heat the normal-temperature water flowing through the hot water pipeline 20, at this time, the hot water pipeline 20 and the cold water pipeline 30 simultaneously supply water to the water outlet pipeline 40, the heated water flowing out of the hot water pipeline 20 and the cold water flowing out of the cold water pipeline 30 are mixed in the water outlet pipeline 40 to obtain the hot water needed by the user, and therefore the hot water can flow out through the water outlet pipeline 40; when the detected pressure is lower than the preset pressure, it is determined that the user needs cold water, the control unit 60 controls the outlet valve 41 to open, and at this time, the cold water stored in the cold water tank 32 flows into the outlet pipeline 40, so that the cold water can be provided through the outlet pipeline 40.
That is, when the pressure detection unit 50 obtains a detection pressure signal and sends the detection pressure signal to the control unit 60, the control unit 60 determines the user's requirement for useful water according to the received detection pressure signal, and determines whether the detection pressure is greater than a preset pressure, if the detection pressure is greater than the preset pressure, the control unit 60 sends a first signal to the hot water valve 21 and the water outlet valve 41 to open the hot water valve 21 and the water outlet valve 41, and sends a second signal to the cold water valve 31 to close the cold water valve 31, and at the same time, the control unit 60 sends a power control signal to the heating unit 22 to start the heating unit 22; if the detected pressure is less than the preset pressure, the control unit 60 sends a first signal to the outlet valve 41 to open the outlet valve 41, and sends a second signal to the hot water valve 21 and the cold water valve 31 to close the hot water valve 21 and the cold water valve 31.
According to an embodiment of the present invention, the control unit 60 is further configured to control the cold water valve 41 to be closed when the supply of the cold water is stopped, control the cold water valve 31 to be opened after delaying a preset time, and control the cold water valve 31 to be closed when the water level of the cold water tank 32 reaches a preset water level.
Specifically, in the process of supplying cold water to a user by the refrigerator, when the control unit 60 receives a signal of stopping supplying cold water, a second signal is sent to the water outlet valve 41 to close the water outlet valve 41, the timer starts to time, when the time counted by the timer reaches a preset time, a first signal is sent to the cold water valve 31 to open the cold water valve 31, and when the water level of the cold water tank 32 reaches the preset water level, a second signal is sent to the cold water valve 31 to close the cold water valve 31, so that the water temperature in the cold water tank is prevented from rising again after the cold water tank is filled with normal-temperature water, and the cold water temperature is insufficient when secondary water is discharged in a short time.
According to an embodiment of the present invention, the control unit 60 is further configured to close the water control valve 41 and the hot water valve 21 when the supply of hot water is stopped, and control the heating unit 22 to stop heating, thereby saving electric power.
Specifically, when the control unit 60 receives a hot water supply stop signal during the supply of hot water from the refrigerator to the user, it sends a second signal to the outlet valve 41 and the hot water valve 21 to close the outlet valve 41 and the hot water valve 21, and sends a heating stop signal to the heating unit 22 to stop heating of the heating unit 22.
Therefore, the refrigerator provided by the embodiment of the invention can provide cold water and hot water, when hot water is provided, the water flowing into the hot water pipeline is subjected to instant heating through the heating unit to obtain hot water, the hot water heating speed is improved, the hot water is quickly provided, a hot water supply water tank is not required to be provided for storing hot water, the space is effectively saved, and the heating energy consumption is reduced. In addition, a wide temperature selection range can be provided through cold and hot water mixing, and the user experience is improved.
According to an embodiment of the present invention, when the detected pressure is greater than the preset pressure, the control unit 60 is further configured to obtain the target outlet water temperature t3 according to the detected pressure n, and control the heating power of the heating unit 22 according to the target outlet water temperature t 3.
That is, when the detected pressure N is greater than the preset pressure N, i.e., N > N, the different pressure values correspond to different target outlet water temperatures t3, and specifically, the target outlet water temperature t3 may be calculated according to the formula t3 — K2 (N-N) and the preset pressure N, where K2 is a pressure-water temperature conversion coefficient.
Specifically, when the detected pressure N is less than or equal to the preset pressure N, the control unit 60 determines that the user demands cold water, and when the detected pressure N is greater than the preset pressure N, the water temperature demanded by the user is directly proportional to the detected pressure, that is, the larger the detected pressure N is, the higher the water temperature demanded by the user is.
Therefore, the water outlet device can determine the target water outlet temperature through the pressure applied by the user, and is simple in structure and easy to operate.
According to an embodiment of the present invention, the refrigerator further includes: the water temperature control system comprises a first temperature detection unit and a second temperature detection unit, wherein the first temperature detection unit can be arranged at the water inlet of the water inlet pipeline 10 and used for detecting the water temperature at the water inlet of the water inlet pipeline 10 to generate a first water temperature t1, the second temperature detection unit can be arranged at the water outlet of the water outlet pipeline 40 and used for detecting the water temperature at the water outlet of the water outlet pipeline 40 to generate a second water temperature t2, the control unit 60 is further used for calculating the initial heating power Q1 of the heating unit 22 according to the target water outlet water temperature t3 and the first water temperature t1, and after the heating unit 22 is heated according to the initial heating power Q1, the heating power of the heating unit 22 is adjusted according to the second water temperature t2 and the target water outlet water temperature t 3.
Specifically, the control unit 60 calculates the initial heating power Q1 of the heating unit 22 according to the following formula:
Q1＝C*M*(K2*(n-N)-t1)/K1
wherein Q1 is the initial heating power of the heating unit, C is the specific heat capacity of water, M is the mass flow of water in the hot water pipeline, N is the detection pressure, N is the preset pressure, K2 is the pressure-water temperature conversion coefficient, t1 is the first water temperature, and K1 is the heat conversion efficiency of the heating unit.
Specifically, the target outlet water temperature t3, i.e., t3 ═ K2 (N-N), may be calculated from the detected pressure N, the preset pressure N, and the pressure-water temperature conversion coefficient K2, and the amount of heat required to heat the water from the first temperature t1 to the target outlet water temperature t3 is Q2, Q2 ═ C × (t3-t1), which is provided by the heating unit 22, and Q2 ═ Q1K 1, so that the initial heating power Q1 of the heating unit 22 is equal to C ═ M (K2 (N-N) -t 1)/K1.
Further, according to an embodiment of the present invention, when the second water temperature t2 is greater than the sum of the target outlet water temperature t3 and the preset water temperature δ t, i.e., t2 > t3+ δ t, the control unit 60 controls the heating power of the heating unit 22 to be decreased, thereby decreasing the second water temperature t2 so that the second water temperature t2 approaches the target outlet water temperature t 3; when the second water temperature t2 is less than the difference between the target outlet water temperature t3 and the preset water temperature δ t, i.e. t2 is less than t3- δ t, the control unit 60 controls the heating power of the heating unit 22 to be increased, so as to increase the second water temperature t2, and make the second water temperature t2 approach the target outlet water temperature t 3; when the second water temperature t2 is greater than or equal to the difference between the target outlet water temperature t3 and the preset water temperature δ t and is less than or equal to the sum of the target outlet water temperature t3 and the preset water temperature δ t, i.e. t3- δ t is less than or equal to t2 and less than or equal to t3+ δ t, the control unit 60 controls the heating power of the heating unit 22 to be kept unchanged.
The preset water temperature δ t is an allowable deviation between the target outlet water temperature t3 and the second temperature t2, and the smaller the absolute value of the preset water temperature δ t is, the closer the actual outlet water temperature is to the target outlet water temperature t 3.
Specifically, after the control unit 60 receives the hot water outlet command, the control unit 60 may first calculate an initial power Q1 of the heating unit according to the detected pressure N and preset pressure N, and control the heating unit 22 to heat the water flowing into the hot water pipeline 20 according to the initial heating power Q1. After the heating unit 22 heats according to the initial heating power Q1, the control unit 60 detects a second water temperature t2 at the water outlet of the water outlet pipeline 40 through a second temperature detection unit, determines whether the second water temperature t2 is maintained at the target outlet water temperature t3, that is, t2 is t3, if the second water temperature t2 is greater than or equal to the difference between the target outlet water temperature t3 and the preset water temperature δ t and is less than or equal to the sum of the target outlet water temperature t3 and the preset water temperature δ t, determines that the second water temperature t2 is maintained at the target outlet water temperature t3, the control unit 60 controls the heating power of the heating unit 22 to be maintained unchanged, and if the second water temperature t2 is greater than the sum of the target outlet water temperature t3 and the preset water temperature δ t, determines that the second water temperature t2 is lower, and the control unit 60 controls the heating power of the heating unit 22 to be reduced to reduce the second water temperature t 2; if the second water temperature t2 is less than the difference between the target leaving water temperature t3 and the preset water temperature δ t, it is determined that the second water temperature t2 is higher, and the control unit 60 controls the heating power of the heating unit 22 to be increased to increase the second water temperature t 2.
In summary, according to the refrigerator provided by the embodiment of the present invention, the hot water pipeline is communicated with the water inlet pipeline, the hot water pipeline is provided with the hot water valve and the heating unit, when the hot water valve is opened, water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline to obtain hot water; the cold water pipeline is communicated with the water inlet pipeline, a cold water valve and a cold water tank are arranged on the cold water pipeline, when the cold water valve is opened, water in the water inlet pipeline flows into the cold water tank through the cold water pipeline, and the cold water tank cools the inflowing water and stores the cold water; a water outlet pipeline is communicated with a hot water pipeline, the water outlet pipeline is communicated with a cold water pipeline, and a water outlet valve is arranged on the water outlet pipeline; the pressure detection unit detects externally applied pressure to generate detection pressure, the control unit controls the hot water valve and the water outlet valve to be opened and controls the cold water valve to be closed when the detection pressure is larger than preset pressure, controls the heating unit to heat to supply hot water through the water outlet pipeline, and controls the water outlet valve to be opened and controls the hot water valve and the cold water valve to be closed when the detection pressure is smaller than or equal to the preset pressure, so that cold water is supplied through the water outlet pipeline. Therefore, the refrigerator provided by the embodiment of the invention can provide cold water and hot water, when hot water is provided, the water flowing into the hot water pipeline is subjected to instant heating through the heating unit to obtain hot water, the hot water heating speed is improved, the hot water is quickly provided, a hot water supply water tank is not required to be provided for storing hot water, the space is effectively saved, and the heating energy consumption is reduced. In addition, the pressure sensor is used for judging whether the user selects cold water or hot water, so that the structure is simple and the operation is convenient.
Fig. 3 is a flowchart of a control method of a refrigerator according to an embodiment of the present invention. The refrigerator comprises a water inlet pipeline, a hot water pipeline, a cold water pipeline and a water outlet pipeline, wherein the hot water pipeline is communicated with the water inlet pipeline, a hot water valve and a heating unit are arranged on the hot water pipeline, the cold water pipeline is communicated with the water inlet pipeline, a cold water valve and a cold water tank are arranged on the cold water pipeline, the water outlet pipeline is communicated with the hot water pipeline, the water outlet pipeline is communicated with the cold water pipeline, and a water outlet valve is arranged on the water outlet pipeline.
As shown in fig. 3, the method for controlling a refrigerator according to the embodiment of the present invention includes the following steps:
s1: an externally applied pressure is sensed to generate a sensed pressure. Wherein the externally applied pressure may be detected by the pressure detection unit to generate the detection pressure.
S2: when the detected pressure is higher than the preset pressure, the hot water valve and the water outlet valve are controlled to be opened, the cold water valve is controlled to be closed, the heating unit is controlled to heat, so that hot water is provided through the water outlet pipeline, when the hot water valve is opened, water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline to obtain hot water.
S3: and when the detected pressure is less than or equal to the preset pressure, controlling the water outlet valve to open and controlling the hot water valve and the cold water valve to close so as to supply cold water through the water outlet pipeline, wherein when the cold water valve is opened, water in the water inlet pipeline flows into the cold water tank through the cold water pipeline, and the cold water tank cools the inflowing water and stores the cold water.
It should be noted that the water outlet pipeline is respectively communicated with the hot water pipeline and the cold water pipeline, the water outlet valve can be disposed on the water outlet pipeline, when the water outlet valve is opened and both the hot water valve and the cold water valve are closed, the cold water flows out from the cold water tank to provide the cold water through the water outlet pipeline, and when the water outlet valve and the hot water valve are opened and the cold water valve is closed, the cold water and the hot water respectively flow out from the cold water pipeline and the hot water pipeline to provide the hot water through the water outlet pipeline (i.e., the mixed water of the cold water pipeline and the hot water pipeline). In some embodiments of the present invention, the hot water is water with a temperature higher than that of the cold water, and the normal temperature water is water with a temperature equal to that of the external environment.
Specifically, when the detected pressure is greater than the preset pressure, the fact that a user needs hot water is judged, the single-control hot water valve and the water outlet valve are controlled to be opened, the cold water valve is controlled to be closed, the heating unit is controlled to heat normal-temperature water flowing through the hot water pipeline, at the moment, the hot water pipeline and the cold water pipeline supply water to the water outlet pipeline simultaneously, heated water flowing out of the hot water pipeline and cold water flowing out of the cold water pipeline are mixed in the water outlet pipeline to obtain hot water needed by the user, and therefore the hot water can flow out of the water outlet pipeline; when the detected pressure is smaller than the preset pressure, the user needs cold water, the water outlet valve is controlled to be opened, and at the moment, the cold water stored in the cold water tank flows into the water outlet pipeline, so that the cold water can be provided through the water outlet pipeline.
That is, determining the user's useful water demand according to the received detection pressure signal, and determining whether the detection pressure is greater than a preset pressure, if the detection pressure is greater than the preset pressure, sending a first signal to the hot water valve and the water outlet valve to open the hot water valve and the water outlet valve, and sending a second signal to the cold water valve to close the cold water valve, and sending a power control signal to the heating unit to start the heating unit; and if the detected pressure is smaller than the preset pressure, sending a first signal to the water outlet valve to enable the water outlet valve to be opened, and sending a second signal to the hot water valve and the cold water valve to enable the hot water valve and the cold water valve to be closed.
According to one embodiment of the present invention, the cold water outlet valve is controlled to be closed when the supply of cold water is stopped, and is controlled to be opened after a delay of a preset time, and the cold water outlet valve is controlled to be closed when the water level of the cold water tank reaches a preset water level.
Specifically, in the process of supplying cold water to a user by the refrigerator, when a signal of stopping supplying cold water is received, a second signal is sent to the water outlet valve to close the water outlet valve, timing is started through a timer, when the timing time of the timer reaches a preset time, a first signal is sent to the cold water valve to open the cold water valve, when the water level of the cold water tank reaches the preset water level, a second signal is sent to the cold water valve to close the cold water valve, and therefore the situation that the temperature of the cold water in the cold water tank rises after normal-temperature water is injected into the cold water tank is avoided, and the temperature of the cold water is insufficient when secondary water is discharged in a short time is avoided.
According to one embodiment of the invention, when the hot water supply is stopped, the water outlet valve and the hot water valve are controlled to be closed, and the heating unit is controlled to stop heating, so that the electric energy is saved.
Specifically, when receiving a hot water supply stop signal during the supply of hot water to a user by the refrigerator, a second signal is sent to the water outlet valve and the hot water valve to close the water outlet valve and the hot water valve, and a heating stop signal is sent to the heating unit to stop heating of the heating unit.
Therefore, the control method of the refrigerator provided by the embodiment of the invention can provide cold water and hot water, when the hot water is provided, the water flowing into the hot water pipeline is subjected to instant heating through the heating unit to obtain the hot water, the heating speed of the hot water is improved, the hot water is quickly provided, a hot water supply tank is not required to be provided for storing the hot water, the space is effectively saved, and the heating energy consumption is reduced. In addition, a wide temperature selection range can be provided through cold and hot water mixing, and the user experience is improved.
According to an embodiment of the present invention, when the detected pressure is greater than the preset pressure, the control method of the refrigerator may further include: and acquiring a target outlet water temperature t3 according to the detection pressure n, and controlling the heating power of the heating unit according to the target outlet water temperature t 3.
That is, when the detected pressure N is greater than the preset pressure N, that is, N > N, the different pressure values correspond to different target outlet water temperatures, and specifically, the target outlet water temperature t3 may be calculated according to the formula t3 — K2 (N-N) according to the detected pressure N and the preset pressure N, where K2 is a pressure-water temperature conversion coefficient.
Specifically, when the detection pressure N is smaller than or equal to the preset pressure N, cold water required by a user is judged, and when the detection pressure N is larger than the preset pressure N, the water temperature required by the user is in direct proportion to the detection pressure, namely, the larger the detection pressure N is, the higher the water temperature required by the user is.
Therefore, the water outlet device can determine the target water outlet temperature through the pressure applied by the user, and is simple in structure and easy to operate.
According to an embodiment of the present invention, as shown in fig. 4, the control method of the refrigerator may further include:
s101: the water temperature at the inlet of the water inlet line is sensed to generate a first water temperature t 1.
S102: the water temperature at the outlet of the water outlet pipeline is detected to generate a second water temperature t 2.
S103: an initial heating power Q1 of the heating unit is calculated from the target outlet water temperature t3 and the first water temperature t 1.
S104: after controlling the heating unit to heat according to the initial heating power Q1, adjusting the heating power of the heating unit according to the second water temperature t2 and the target outlet water temperature t 3.
Specifically, the initial heating power Q1 of the heating unit is calculated according to the following formula:
Q1＝C*M*(K2*(n-N)-t1)/K1
wherein Q1 is the initial heating power of the heating unit, C is the specific heat capacity of water, M is the mass flow of water in the hot water pipeline, N is the detection pressure, N is the preset pressure, K2 is the pressure-water temperature conversion coefficient, t1 is the first water temperature, and K1 is the heat conversion efficiency of the heating unit.
Specifically, the target outlet water temperature t3, i.e., t3 is K2 (N-N), may be calculated from the detected pressure N, the preset pressure N, and the pressure-water temperature conversion coefficient K2, the amount of heat required to heat the water from the first temperature t1 to the target outlet water temperature t3 is Q2, Q2 is C M (t3-t1), the amount of heat is provided by the heating unit, and Q2 is Q1K 1, so that the initial heating power Q1 of the heating unit 22 is C M (K2 (N-N) -t 1)/K1.
According to an embodiment of the present invention, when the second water temperature t2 is greater than the sum of the target outlet water temperature t3 and the preset water temperature δ t, i.e., t2 > t3+ δ t, the heating power of the heating unit is controlled to be decreased, thereby decreasing the second water temperature t2 so that the second water temperature t2 approaches the target outlet water temperature t 3; when the second water temperature t2 is smaller than the difference between the target outlet water temperature t3 and the preset water temperature δ t, namely t2 is smaller than t3- δ t, the heating power of the heating unit is controlled to be increased, so that the second water temperature t2 is increased, and the second water temperature t2 is close to the target outlet water temperature t 3; when the second water temperature t2 is greater than or equal to the difference between the target outlet water temperature t3 and the preset water temperature delta t and is less than or equal to the sum of the target outlet water temperature t3 and the preset water temperature delta t, namely t 3-delta t is less than or equal to t2 and less than or equal to t3+ delta t, the heating power of the heating unit is controlled to be kept unchanged.
The preset water temperature δ t is an allowable deviation between the target outlet water temperature t3 and the second temperature t2, and the smaller the absolute value of the preset water temperature δ t is, the closer the actual outlet water temperature is to the target outlet water temperature t 3.
Specifically, after receiving the hot water outlet instruction, the initial power Q1 of the heating unit may be calculated according to the detected pressure N and the preset pressure N, and the heating unit may be controlled to heat the water flowing into the hot water pipeline according to the initial heating power Q1. After the heating unit heats according to the initial heating power Q1, a second water temperature t2 of a water outlet of the water outlet pipeline is detected through a second temperature detection unit, the control unit judges whether the second water temperature t2 is maintained at a target outlet water temperature t3, namely t2 is t3, if the second water temperature t2 is larger than or equal to the difference between the target outlet water temperature t3 and a preset water temperature delta t and smaller than or equal to the sum of the target outlet water temperature t3 and the preset water temperature delta t, the second water temperature t2 is maintained at the target outlet water temperature t3, the heating power of the heating unit is controlled to be maintained unchanged, and if the second water temperature t2 is larger than the sum of the target outlet water temperature t3 and the preset water temperature delta t, and the second water temperature t2 is judged to be lower, the heating power of the heating unit is controlled to be reduced so as to reduce the second water temperature t 2; if the second water temperature t2 is less than the difference between the target outlet water temperature t3 and the preset water temperature deltat, and the second water temperature t2 is judged to be higher, the heating power of the heating unit is controlled to be increased to increase the second water temperature t 2.
According to an embodiment of the present invention, as shown in fig. 5, a control method of a refrigerator includes the steps of:
s201: and judging whether the water demand of the user is detected.
If yes, go to step S203; if not, executing the following steps: 202.
s202: the water supply system is stopped.
S203: an externally applied pressure is detected.
S204: it is determined whether the detected pressure n is greater than a predetermined pressure.
If yes, go to step S205; if not, step S210 is performed.
S205: and calculating the target outlet water temperature t3 according to the detection pressure n.
S206: and controlling the hot water valve, the heating unit and the water outlet valve to be opened.
S207: and judging that the second water temperature t2 at the water outlet of the water outlet pipeline is maintained at the target outlet water temperature t 3.
If the second water temperature t2 is maintained at the target outlet water temperature t3, that is, the second water temperature t2 is greater than or equal to the difference between the target outlet water temperature t3 and the preset water temperature δ t and is less than or equal to the sum of the target outlet water temperature t3 and the preset water temperature δ t, go to step S209;
if the second water temperature t2 is not maintained at the target outlet water temperature t3, i.e. the second water temperature t2 is greater than the sum of the target outlet water temperature t3 and the preset water temperature δ t or the second water temperature t2 is less than the difference between the target outlet water temperature t3 and the preset water temperature δ t, step S208 is executed.
S208: the heating power of the heating unit is adjusted.
S209: providing hot water to the user.
S210: providing cold water to the user.
In summary, according to the control method of the refrigerator provided by the embodiment of the present invention, the detection pressure is generated by detecting the pressure applied from the outside, when the detection pressure is greater than the preset pressure, the hot water valve and the water outlet valve are controlled to be opened and the cold water valve is controlled to be closed, and the heating unit is controlled to heat water to provide hot water through the water outlet pipeline, when the hot water valve is opened, the water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline to obtain hot water; when the detected pressure is less than or equal to the preset pressure, the water outlet valve is controlled to be opened, and the hot water valve and the cold water valve are controlled to be closed, so that cold water is provided through the water outlet pipeline, when the cold water valve is opened, water in the water inlet pipeline flows into the cold water tank through the cold water pipeline, and the cold water tank cools the inflowing water and stores the cold water. Therefore, the control method of the refrigerator provided by the embodiment of the invention can provide cold water and hot water, when the hot water is provided, the water flowing into the hot water pipeline is subjected to instant heating through the heating unit to obtain the hot water, the heating speed of the hot water is improved, the hot water is quickly provided, a hot water supply tank is not required to be provided for storing the hot water, the space is effectively saved, and the heating energy consumption is reduced. In addition, a wide temperature selection range can be provided through cold and hot water mixing, and the user experience is improved.
The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the control method of the refrigerator as described above.
According to the non-transitory computer-readable storage medium provided by the embodiment of the invention, through the control method of the refrigerator, when hot water is provided, the water flowing into the hot water pipeline is subjected to instant heating through the heating unit to obtain hot water, the heating speed of the hot water is improved, the hot water is quickly provided, a hot water supply water tank is not required to be provided for storing the hot water, the space is effectively saved, and the heating energy consumption is reduced.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (13)
1. A refrigerator, characterized by comprising:
a water inlet pipeline;
the hot water pipeline is communicated with the water inlet pipeline, a hot water valve and a heating unit are arranged on the hot water pipeline, when the hot water valve is opened, water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline;
the cold water pipeline is communicated with the water inlet pipeline, and is provided with a cold water valve and a cold water tank, wherein when the cold water valve is opened, water in the water inlet pipeline flows into the cold water tank through the cold water pipeline, and the cold water tank cools the inflowing water and stores cold water;
the water outlet pipeline is communicated with the hot water pipeline, the water outlet pipeline is communicated with the cold water pipeline, and a water outlet valve is arranged on the water outlet pipeline;
a pressure detection unit for detecting an externally applied pressure to generate a detection pressure;
the control unit is respectively connected with the pressure detection unit, the heating unit, the hot water valve, the cold water valve and the water outlet valve, and is used for controlling the hot water valve and the water outlet valve to be opened and the cold water valve to be closed when the detection pressure is greater than a preset pressure, controlling the heating unit to heat so as to provide hot water through the water outlet pipeline, and controlling the water outlet valve to be opened and the hot water valve and the cold water valve to be closed when the detection pressure is less than or equal to the preset pressure so as to provide cold water through the water outlet pipeline;
the control unit is also used for acquiring a target outlet water temperature according to the detection pressure and controlling the heating power of the heating unit according to the target outlet water temperature.
2. The refrigerator according to claim 1, further comprising:
a first temperature detection unit for detecting a water temperature at an inlet of the water inlet pipe to generate a first water temperature;
the second temperature detection unit is used for detecting the water temperature of the water outlet pipeline to generate a second water temperature;
the control unit is further configured to calculate an initial heating power of the heating unit according to the target outlet water temperature and the first water temperature, and adjust the heating power of the heating unit according to the second water temperature and the target outlet water temperature after controlling the heating unit to heat according to the initial heating power.
3. The refrigerator of claim 2, wherein the control unit calculates the initial heating power of the heating unit according to the following formula:
Q1＝C*M*(K2*(n-N)-t1)/K1
wherein Q1 is the initial heating power of the heating unit, C is the specific heat capacity of water, M is the mass flow rate of water in the hot water pipeline, N is the detection pressure, N is the preset pressure, K2 pressure-water temperature conversion coefficient, t1 is the first water temperature, and K1 is the thermal conversion efficiency of the heating unit.
4. The refrigerator according to claim 2,
when the second water temperature is larger than the sum of the target outlet water temperature and a preset water temperature, the control unit controls the heating power of the heating unit to be reduced;
when the second water temperature is smaller than the difference between the target outlet water temperature and a preset water temperature, the control unit controls the heating power of the heating unit to be increased;
and when the second water temperature is greater than or equal to the difference between the target outlet water temperature and the preset water temperature and is less than or equal to the sum of the target outlet water temperature and the preset water temperature, the control unit controls the heating power of the heating unit to be kept unchanged.
5. The refrigerator according to claim 1, wherein the control unit is further configured to control the outlet valve and the hot water valve to be closed when the supply of the hot water is stopped, and to control the heating unit to stop heating.
6. The refrigerator of claim 1, wherein the control unit is further configured to control the outlet valve to be closed when the supply of the cold water is stopped, and to control the cold water valve to be opened after a delay of a preset time, and to control the cold water valve to be closed when the water level of the cold water tank reaches a preset water level.
7. The control method of the refrigerator is characterized in that the refrigerator comprises a water inlet pipeline, a hot water pipeline, a cold water pipeline and a water outlet pipeline, the hot water pipeline is communicated with the water inlet pipeline, a hot water valve and a heating unit are arranged on the hot water pipeline, the cold water pipeline is communicated with the water inlet pipeline, a cold water valve and a cold water tank are arranged on the cold water pipeline, the water outlet pipeline is communicated with the hot water pipeline, the water outlet pipeline is communicated with the cold water pipeline, and a water outlet valve is arranged on the water outlet pipeline, and the method comprises the following steps:
detecting an externally applied pressure to generate a detected pressure;
when the detected pressure is higher than a preset pressure, controlling the hot water valve and the water outlet valve to be opened and controlling the cold water valve to be closed, and controlling the heating unit to heat so as to provide hot water through the water outlet pipeline, wherein when the hot water valve is opened, water in the water inlet pipeline flows into the hot water pipeline, and the heating unit heats the water flowing into the hot water pipeline;
when the detected pressure is less than or equal to the preset pressure, controlling the water outlet valve to be opened and controlling the hot water valve and the cold water valve to be closed so as to provide cold water through the water outlet pipeline, wherein when the cold water valve is opened, water in the water inlet pipeline flows into the cold water tank through the cold water pipeline, and the cold water tank cools the inflowing water and stores the cold water;
when the detection pressure is greater than a preset pressure, the method further comprises: and acquiring a target outlet water temperature according to the detection pressure, and controlling the heating power of the heating unit according to the target outlet water temperature.
8. The method of controlling a refrigerator according to claim 7, further comprising:
detecting a water temperature at an inlet of the water inlet line to generate a first water temperature;
detecting the water temperature of a water outlet of the water outlet pipeline to generate a second water temperature;
calculating the initial heating power of the heating unit according to the target outlet water temperature and the first water temperature;
and after controlling the heating unit to heat according to the initial heating power, adjusting the heating power of the heating unit according to the second water temperature and the target outlet water temperature.
9. The control method of a refrigerator according to claim 8, wherein the initial heating power of the heating unit is calculated according to the following formula:
Q1＝C*M*(K2*(n-N)-t1)/K1
wherein Q1 is the initial heating power of the heating unit, C is the specific heat capacity of water, M is the mass flow rate of water in the hot water pipeline, N is the detection pressure, N is the preset pressure, K2 pressure-water temperature conversion coefficient, t1 is the first water temperature, and K1 is the thermal conversion efficiency of the heating unit.
10. The control method of a refrigerator according to claim 8,
when the second water temperature is larger than the sum of the target outlet water temperature and a preset water temperature, controlling the heating power of the heating unit to be reduced;
when the second water temperature is smaller than the difference between the target outlet water temperature and a preset water temperature, controlling the heating power of the heating unit to be increased;
and when the second water temperature is greater than or equal to the difference between the target outlet water temperature and the preset water temperature and is less than or equal to the sum of the target outlet water temperature and the preset water temperature, controlling the heating power of the heating unit to be kept unchanged.
11. The method of controlling a refrigerator according to claim 7, further comprising:
and when the hot water supply is stopped, controlling the water outlet valve and the hot water valve to be closed, and controlling the heating unit to stop heating.
12. The method of controlling a refrigerator according to claim 7, further comprising:
and controlling the water outlet valve to be closed when the cold water supply is stopped, controlling the cold water valve to be opened after delaying preset time, and controlling the cold water valve to be closed when the water level of the cold water tank reaches a preset water level.
13. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that the program, when executed by a processor, implements the control method of the refrigerator according to any one of claims 7-12.
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| CN201710915407.0A CN107560313B (en) | 2017-09-30 | 2017-09-30 | Refrigerator and control method thereof |
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| CN107560313B true CN107560313B (en) | 2020-02-07 |
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| US5095941A (en) * | 1990-06-27 | 1992-03-17 | Betz John J | Method and apparatus for actuating a faucet |
| KR200171171Y1 (en) * | 1999-09-30 | 2000-03-15 | 차승식 | Cold and hot water possess both a refrigerator |
| CN1548888A (en) * | 2003-05-16 | 2004-11-24 | 乐金电子(天津)电器有限公司 | Refrigerator with warm water dispenser |
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| CN107560313A (en) | 2018-01-09 |
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