CN114719506B - Refrigerator and control method thereof - Google Patents

Refrigerator and control method thereof Download PDF

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Publication number
CN114719506B
CN114719506B CN202210207015.XA CN202210207015A CN114719506B CN 114719506 B CN114719506 B CN 114719506B CN 202210207015 A CN202210207015 A CN 202210207015A CN 114719506 B CN114719506 B CN 114719506B
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China
Prior art keywords
outlet
gating mechanism
inlet
state
condenser
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CN202210207015.XA
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Chinese (zh)
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CN114719506A (en
Inventor
冷川
张云峰
轩福臣
陈君
牛愉涛
张庆男
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Qingdao Haier Biomedical Co Ltd
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Qingdao Haier Biomedical Co Ltd
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Priority to CN202210207015.XA priority Critical patent/CN114719506B/en
Publication of CN114719506A publication Critical patent/CN114719506A/en
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Publication of CN114719506B publication Critical patent/CN114719506B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a refrigerator, which comprises a condenser and a dew removing pipe, and further comprises: the first gating mechanism is characterized in that an inlet is connected with a refrigerant inflow port, a first outlet is connected with an inlet of the condenser, and a second outlet is connected with an inlet of the dew removing pipe; the second gating mechanism is characterized in that an inlet is connected with an outlet of the condenser, a first outlet is connected with a refrigerant outflow port, and a second outlet is connected with an inlet of the dew removing pipe; and the inlet of the third gating mechanism is connected with the outlet of the dew removing pipe, the first outlet is connected with the refrigerant outflow port, and the second outlet is connected with the inlet of the condenser. Because the state of each gating mechanism is set according to the ambient humidity, the heat released by the dew removing pipe is based on the ambient humidity, so that the dew removing effect of the refrigerator is improved under different ambient humidities. The application also discloses a control method of the refrigerator.

Description

Refrigerator and control method thereof
Technical Field
The application relates to the technical field of refrigeration equipment, in particular to a refrigerator and a control method thereof.
Background
At present, in order to conveniently check medicines in a medical refrigerator, the refrigerator is usually provided with a transparent glass refrigerator door. Under the high-temperature and high-humidity environment, the condensation problem often occurs at the opening and closing positions of the refrigerator body and the refrigerator door.
The refrigerator with the condensation removing function in the related art comprises a compressor, a condensation component, a condensation removing pipe, a capillary tube and an evaporator which are sequentially connected, wherein the condensation component comprises a condensation pipe and a switching element; the condensing tube comprises a main condensing tube and an auxiliary condensing tube, and the switch element is connected with the auxiliary condensing tube in parallel; when the switching element is turned on, the sub-condenser is in a short-circuit state; when the switch element is turned off, the main condenser pipe and the auxiliary condenser pipe are connected in series.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the technology can solve the problem of condensation of the refrigerator. However, the dew removing tube is located after the condensing unit, and the dew removing effect is poor in the case where the ambient humidity is high.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a refrigerator and a control method thereof, so as to improve the dew removing effect of the refrigerator under different environmental humidity.
In some embodiments, the refrigerator includes a condenser and a dew removing tube, further comprising: the first gating mechanism is characterized in that an inlet is connected with a refrigerant inflow port, a first outlet is connected with an inlet of the condenser, and a second outlet is connected with an inlet of the dew removing pipe; the second gating mechanism is characterized in that an inlet is connected with an outlet of the condenser, a first outlet is connected with a refrigerant outflow port, and a second outlet is connected with an inlet of the dew removing pipe; the third gating mechanism is characterized in that an inlet is connected with an outlet of the dew removing pipe, a first outlet is connected with a refrigerant outflow port, and a second outlet is connected with an inlet of the condenser; the refrigerant flows through the condenser under the condition that the first gating mechanism and the second gating mechanism are set to be in a first state; the refrigerant sequentially flows through the condenser and the dew removing pipe under the condition that the first gating mechanism, the second gating mechanism and the third gating mechanism are set to be in a second state; and under the condition that the first gating mechanism, the second gating mechanism and the third gating mechanism are set to be in a third state, the refrigerant sequentially flows through the dew removing pipe and the condenser.
Optionally, the first gating mechanism includes: the first one-way valve, the inlet is connected with refrigerant inflow port, the outlet is connected with inlet of the condenser; the second one-way valve, the inlet is connected with coolant inflow port, the outlet is connected with the inlet of the dew removing pipe; when the first gating mechanism is set to be in a first state, the first one-way valve is opened, and the second one-way valve is closed; when the first gating mechanism is set to be in the second state, the first one-way valve is opened, and the second one-way valve is closed; when the first gating mechanism is set to the third state, the first check valve is closed and the second check valve is opened.
Optionally, the first gating mechanism includes: the first electromagnetic valve is characterized in that the inlet is connected with the refrigerant inflow port, the first outlet is connected with the inlet of the condenser, and the second outlet is connected with the inlet of the dew removing pipe; when the first gating mechanism is set to a first state, a first outlet of the first electromagnetic valve is opened, and a second outlet of the first electromagnetic valve is closed; when the first gating mechanism is set to a second state, a first outlet of the first electromagnetic valve is opened, and a second outlet of the first electromagnetic valve is closed; when the first gating mechanism is set to the third state, the first outlet of the first solenoid valve is closed, and the second outlet is opened.
Optionally, the second gating mechanism includes: the inlet of the third one-way valve is connected with the outlet of the condenser, and the outlet of the third one-way valve is connected with the refrigerant outflow port; the inlet of the fourth one-way valve is connected with the outlet of the condenser, and the outlet of the fourth one-way valve is connected with the inlet of the dew removing pipe; when the second gating mechanism is set to be in the first state, the third one-way valve is opened, and the fourth one-way valve is closed; when the second gating mechanism is set to a second state, the third one-way valve is closed, and the fourth one-way valve is opened; when the second gating mechanism is set to the third state, the third check valve is opened and the fourth check valve is closed.
Optionally, the second gating mechanism includes: the inlet of the second electromagnetic valve is connected with the outlet of the condenser, the first outlet is connected with the refrigerant outflow port, and the second outlet is connected with the inlet of the dew removing pipe; the first outlet of the second electromagnetic valve is opened and the second outlet is closed under the condition that the second gating mechanism is set to be in the first state; the first outlet of the second electromagnetic valve is closed and the second outlet is opened under the condition that the second gating mechanism is set to be in the second state; in the case where the second gating mechanism is set to the third state, the first outlet of the second solenoid valve is opened and the second outlet is closed.
Optionally, the third gating mechanism includes: a fifth one-way valve, wherein the inlet is connected with the outlet of the dew removing pipe, and the outlet is connected with the refrigerant outflow port; a sixth one-way valve, wherein the inlet is connected with the outlet of the dew removing pipe, and the outlet is connected with the inlet of the condenser; when the third gating mechanism is set to be in the second state, the fifth one-way valve is opened, and the sixth one-way valve is closed; when the third gating mechanism is set to the third state, the fifth check valve is closed and the sixth check valve is opened.
Optionally, the third gating mechanism includes: the inlet of the third electromagnetic valve is connected with the outlet of the dew removing pipe, the first outlet is connected with the refrigerant outflow port, and the second outlet is connected with the inlet of the condenser; when the third gating mechanism is set to a second state, the first outlet of the third electromagnetic valve is opened, and the second outlet is closed; when the third gating mechanism is set to the third state, the first outlet of the third solenoid valve is closed and the second outlet is opened.
Optionally, the method further comprises: the air outlet is used as a refrigerant inflow port and is connected with the inlet of the first gating mechanism; the outlet of the evaporator is connected with the air inlet of the compressor; the outlet of the capillary tube is connected with the inlet of the evaporator; the inlet of the filter is used as a refrigerant outflow port and is connected with the first outlets of the second gating mechanism and the third gating mechanism, and the outlet of the filter is connected with the inlet of the capillary tube.
Optionally, the method further comprises: the condenser, the dew removing pipe, the first gating mechanism, the second gating mechanism, the third gating mechanism, the compressor, the evaporator, the capillary tube and the filter are arranged in the box body; and the box door is connected with the box body and used for opening or closing the box body.
In some embodiments, the control method is used for the refrigerator, and includes: detecting the ambient humidity; setting the first gating mechanism and the second gating mechanism to a first state under the condition that the ambient humidity is less than or equal to a first set humidity; setting the first gating mechanism, the second gating mechanism and the third gating mechanism to a second state in the case that the ambient humidity is greater than the first set humidity and less than or equal to the second set humidity; and setting the first gating mechanism, the second gating mechanism and the third gating mechanism to a third state when the ambient humidity is greater than the second set humidity.
The refrigerator and the control method thereof provided by the embodiment of the disclosure can realize the following technical effects:
the heat required for dew removal is different under different environmental humidity. The states of the first gating mechanism, the second gating mechanism and the third gating mechanism are set, so that the connection mode of the dew removing pipe is changed, and the refrigerant only flows through the condenser, sequentially flows through the condenser and the dew removing pipe or sequentially flows through the dew removing pipe and the condenser. The temperature of the refrigerant in the dew removing pipe is changed by changing the sequence of the refrigerant flowing through each part, and the heat released by the dew removing pipe is adjusted. Because the state of each gating mechanism is set according to the ambient humidity, the heat released by the dew removing pipe is based on the ambient humidity, so that the dew removing effect of the refrigerator is improved under different ambient humidities. Meanwhile, the dew removing pipe releases heat when the refrigerant flows through the dew removing pipe, and certain influence is generated on medicines in the refrigerator. The change of the temperature in the box can be reduced and the storage effect of the medicine can be improved by adjusting the heat released during the operation of the dew removing pipe.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic view of a refrigerator according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of another refrigerator provided in an embodiment of the present disclosure;
FIG. 3 is a schematic view of another refrigerator provided in an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a method of controlling a refrigerator according to an embodiment of the present disclosure;
FIG. 5 is a schematic illustration of another method of controlling a refrigerator according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of another method of controlling a refrigerator according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of another method of controlling a refrigerator according to an embodiment of the present disclosure.
Reference numerals:
11: a condenser; 12: a dew removing pipe; 13: a first gating mechanism; 14: a second gating mechanism; 15: a third gating mechanism; 16: a compressor; 17: an evaporator; 18: a capillary tube; 19: a filter; 131: a first one-way valve; 132: a second one-way valve; 133: a first electromagnetic valve; 141: a third one-way valve; 142: a fourth one-way valve; 143: a second electromagnetic valve; 151: a fifth check valve; 152: a sixth one-way valve; 153: and a third solenoid valve.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.
In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.
At present, a transparent glass box door is often adopted for a medical refrigerator so as to facilitate checking of the condition of medicines in the refrigerator. Because the temperature of preserving the medicine in the box is low, ambient temperature is high, the problem of condensation often appears in the department that opens and shuts of box and chamber door.
As shown in connection with fig. 1, an embodiment of the present disclosure provides a refrigerator including a condenser 11, a dew removing tube 12, a first gating mechanism 13, a second gating mechanism 14, and a third gating mechanism 15. The inlet of the first gating mechanism 13 is connected with the refrigerant inflow port, the first outlet is connected with the inlet of the condenser 11, and the second outlet is connected with the inlet of the dew removing pipe 12. The inlet of the second gating mechanism 14 is connected with the outlet of the condenser 11, the first outlet is connected with the refrigerant outflow port, and the second outlet is connected with the inlet of the dew removing tube 12. The third gating mechanism 15 has an inlet connected to the outlet of the dew removing tube 12, a first outlet connected to the refrigerant outflow port, and a second outlet connected to the inlet of the condenser 11. In the case where the first gating mechanism 13 and the second gating mechanism 14 are set to the first state, the refrigerant flows through the condenser 11. When the first gating mechanism 13, the second gating mechanism 14, and the third gating mechanism 15 are set to the second state, the refrigerant flows through the condenser 11 and the dew removing tube 12 in this order. When the first gating mechanism 13, the second gating mechanism 14, and the third gating mechanism 15 are set to the third state, the refrigerant flows through the dew removing tube 12 and the condenser 11 in this order.
By adopting the refrigerator provided by the embodiment of the disclosure, the heat required for removing dew is different under different environmental humidity. The states of the first gating mechanism, the second gating mechanism and the third gating mechanism are set, so that the connection mode of the dew removing pipe is changed, and the refrigerant only flows through the condenser, sequentially flows through the condenser and the dew removing pipe or sequentially flows through the dew removing pipe and the condenser. The temperature of the refrigerant in the dew removing pipe is changed by changing the sequence of the refrigerant flowing through each part, and the heat released by the dew removing pipe is adjusted. Because the state of each gating mechanism is set according to the ambient humidity, the heat released by the dew removing pipe is based on the ambient humidity, so that the dew removing effect of the refrigerator is improved under different ambient humidities. Meanwhile, the dew removing pipe releases heat when the refrigerant flows through the dew removing pipe, and certain influence is generated on medicines in the refrigerator. The change of the temperature in the box can be reduced and the storage effect of the medicine can be improved by adjusting the heat released during the operation of the dew removing pipe.
As shown in conjunction with fig. 2 and 3, the first gating mechanism 13 optionally includes a first check valve 131 and a second check valve 132. The inlet of the first check valve 131 is connected to the refrigerant inflow port, and the outlet is connected to the inlet of the condenser 11. The inlet of the second check valve 132 is connected to the refrigerant inflow port, and the outlet is connected to the inlet of the dew removing tube 12. In the case where the first gating mechanism 13 is set to the first state, the first check valve 131 is opened and the second check valve 132 is closed. In the case where the first gating mechanism 13 is set to the second state, the first check valve 131 is opened and the second check valve 132 is closed. In the case where the first gating mechanism 13 is set to the third state, the first check valve 131 is closed and the second check valve 132 is opened. Therefore, the combination of the two one-way valves is adopted to select the part into which the refrigerant flows for the first time, so that the refrigerant can be prevented from flowing back in the condenser and the dew removing pipe, and the dew removing effect of the refrigerator is improved.
Alternatively, the first gating mechanism 13 includes a first solenoid valve 133. An inlet of the first solenoid valve 133 is connected to the refrigerant inflow port, a first outlet is connected to an inlet of the condenser 11, and a second outlet is connected to an inlet of the dew removing tube 12. In the case where the first gating mechanism 13 is set to the first state, the first outlet of the first solenoid valve 133 is opened and the second outlet is closed. In the case where the first gating mechanism 13 is set to the second state, the first outlet of the first solenoid valve 133 is opened and the second outlet is closed. In the case where the first gating mechanism 13 is set to the third state, the first outlet of the first solenoid valve 133 is closed and the second outlet is opened. Therefore, a solenoid valve is adopted to select a part into which the refrigerant flows for the first time, and the first gating mechanism has simple structure and connection mode and low cost. When the state of the first gating mechanism is changed, only the outlet of one valve is required to be controlled, and the mode of changing the flow direction of the refrigerant is simple.
Optionally, the second gating mechanism 14 includes a third check valve 141 and a fourth check valve 142. The inlet of the third check valve 141 is connected to the outlet of the condenser 11, and the outlet is connected to the refrigerant outflow port. The inlet of the fourth check valve 142 is connected to the outlet of the condenser 11, and the outlet is connected to the inlet of the dew removing tube 12. In the case where the second gating mechanism 14 is set to the first state, the third check valve 141 is opened and the fourth check valve 142 is closed. In the case where the second gating mechanism 14 is set to the second state, the third check valve 141 is closed and the fourth check valve 142 is opened. In the case where the second gating mechanism 14 is set to the third state, the third check valve 141 is opened and the fourth check valve 142 is closed. Therefore, the combination of the two check valves is adopted to select the part in which the refrigerant secondarily flows in, so that the backflow of the refrigerant in the refrigerant outflow port and the dew removing pipe can be prevented, and the dew removing effect of the refrigerator can be improved.
Optionally, the second gating mechanism 14 includes a second solenoid valve 143. An inlet of the second solenoid valve 143 is connected to an outlet of the condenser 11, a first outlet is connected to the refrigerant outflow port, and a second outlet is connected to an inlet of the dew removing tube 12. In the case where the second gating mechanism 14 is set to the first state, the first outlet of the second solenoid valve 143 is opened and the second outlet is closed. In the case where the second gating mechanism 14 is set to the second state, the first outlet of the second solenoid valve 143 is closed and the second outlet is opened. In the case where the second gating mechanism 14 is set to the third state, the first outlet of the second solenoid valve 143 is opened and the second outlet is closed. Therefore, a solenoid valve is adopted to select a part for secondary inflow of the refrigerant, and the second gating mechanism has simple structure and connection mode and low cost. When the state of the second gating mechanism is changed, only the outlet of one valve is required to be controlled, and the mode of changing the flow direction of the refrigerant is simple.
Optionally, the third gating mechanism 15 includes a fifth check valve 151 and a sixth check valve 152. The fifth check valve 151 has an inlet connected to the outlet of the dew removing tube 12 and an outlet connected to the refrigerant outflow port. The sixth check valve 152 has an inlet connected to the outlet of the dew removing tube 12 and an outlet connected to the inlet of the condenser 11. In the case where the third gating mechanism 15 is set to the second state, the fifth check valve 151 is opened and the sixth check valve 152 is closed. In the case where the third gating mechanism 15 is set to the third state, the fifth check valve 151 is closed and the sixth check valve 152 is opened. Therefore, the combination of the two check valves is adopted to select the part in which the refrigerant secondarily flows in, so that the backflow of the refrigerant in the refrigerant outflow port and the condenser can be prevented, and the dew removing effect of the refrigerator can be improved.
Optionally, the third gating mechanism 15 includes a third solenoid valve 153. An inlet of the third electromagnetic valve 153 is connected to an outlet of the dew removing tube 12, a first outlet is connected to the refrigerant outflow port, and a second outlet is connected to an inlet of the condenser 11. In the case where the third gating mechanism 15 is set to the second state, the first outlet of the third electromagnetic valve 153 is opened and the second outlet is closed. In the case where the third gating mechanism 15 is set to the third state, the first outlet of the third electromagnetic valve 153 is closed and the second outlet is opened. Therefore, a solenoid valve is adopted to select a part for secondary inflow of the refrigerant, and the third gating mechanism has simple structure and connection mode and low cost. When the state of the third gating mechanism is changed, only the outlet of one valve is required to be controlled, and the mode of changing the flow direction of the refrigerant is simple.
The first gating mechanism 13, the second gating mechanism 14 and the third gating mechanism 15 are not limited to the combination of the plurality of check valves or the single solenoid valve described above, but may be other valves or valve combinations capable of achieving the same or similar functions.
Optionally, the cooler also includes a compressor 16, an evaporator 17, a capillary tube 18, and a filter 19. The discharge port of the compressor 16 is connected to the inlet of the first gating mechanism 13 as a refrigerant inflow port for compressing the refrigerant. The outlet of the evaporator 17 is connected to the inlet of the compressor 16 for reducing the temperature in the refrigerator. The outlet of the capillary tube 18 is connected to the inlet of the evaporator 17 for throttling and depressurizing. The inlet of the filter 19 is connected as a refrigerant outflow port to the first outlets of the second gating mechanism 14 and the third gating mechanism 15, and the outlet is connected to the inlet of the capillary tube 18 for filtering impurities. Therefore, the compressor, the evaporator, the capillary tube and the condenser can be mutually matched, so that the effect of reducing the temperature in the refrigerator is achieved, and the medicine refrigeration is realized. The filter can filter impurities and prevent the refrigerant from being blocked in the pipeline.
Optionally, the refrigerator further comprises a box body and a box door. The condenser 11, the dew removing pipe 12, the first gating mechanism 13, the second gating mechanism 14, the third gating mechanism 15, the compressor 16, the evaporator 17, the capillary tube 18 and the filter 19 are provided in a tank. The box door is connected with the box body and used for opening or closing the box body. Wherein the dew removing pipe 12 is positioned at the opening and closing position of the box body and the box door. Therefore, the dew removing pipe is positioned at the dew generating position, and the heat released during working is mainly used for removing dew, so that the dew removing effect is improved. Meanwhile, the change of the temperature in the box can be reduced, and the storage effect of the medicine is improved.
Optionally, the refrigerator further comprises a refrigerant temperature sensor, an ambient temperature sensor, a humidity sensor, a heating wire and a controller. The refrigerant temperature sensor is disposed at an inlet of the dew removing tube 12, and is used for detecting the temperature of the refrigerant flowing into the dew removing tube 12. The ambient temperature sensor is arranged on the box body and used for detecting the ambient temperature. The humidity sensor is arranged on the box body and used for detecting the ambient humidity. The heater strip sets up in the box, is located the department that opens and shuts of box and chamber door for supplementary dew that removes. The controller is connected to the first gating mechanism 13, the second gating mechanism 14, the third gating mechanism 15, the refrigerant temperature sensor, the ambient temperature sensor, the humidity sensor, and the heating wire, and is configured to set the first gating mechanism 13, the second gating mechanism 14, and the third gating mechanism 15 to a first state, a second state, or a third state according to the ambient humidity detected by the humidity sensor. And adjusting the power of the heating wire according to the refrigerant temperature detected by the refrigerant temperature sensor, the ambient temperature detected by the ambient temperature sensor and the ambient humidity detected by the humidity sensor. Therefore, the state of each gating mechanism can be controlled according to the ambient humidity, and the heat released by the dew removing pipe is based on the ambient humidity, so that the dew removing effect of the refrigerator is improved under different ambient humidities. Under the high-temperature and high-humidity environment, the quantity of the condensate is excessive, and the dew removing pipe is difficult to meet the dew removing requirement when working independently. The heating wire is used for assisting in removing dew so as to improve the dew removing effect of the refrigerator. By adjusting the power of the heating wire, the change of the temperature in the box is reduced, and the storage effect of the medicine is improved.
Referring to fig. 4, an embodiment of the present disclosure provides a control method of a refrigerator, including:
s210, the controller detects the ambient humidity.
S221, in the case where the ambient humidity is less than or equal to the first set humidity, the controller sets the first gating mechanism and the second gating mechanism to the first state.
S222, in the case where the ambient humidity is greater than the first set humidity and less than or equal to the second set humidity, the controller sets the first gating mechanism, the second gating mechanism, and the third gating mechanism to the second state.
S223, in case that the ambient humidity is greater than the second set humidity, the controller sets the first gating mechanism, the second gating mechanism, and the third gating mechanism to a third state.
By adopting the control method of the refrigerator provided by the embodiment of the disclosure, the heat required for removing dew is different under different environmental humidity. The states of the first gating mechanism, the second gating mechanism and the third gating mechanism are set, so that the connection mode of the dew removing pipe is changed, and the refrigerant only flows through the condenser, sequentially flows through the condenser and the dew removing pipe or sequentially flows through the dew removing pipe and the condenser. The temperature of the refrigerant in the dew removing pipe is changed by changing the sequence of the refrigerant flowing through each part, and the heat released by the dew removing pipe is adjusted. Because the state of each gating mechanism is set according to the ambient humidity, the heat released by the dew removing pipe is based on the ambient humidity, so that the dew removing effect of the refrigerator is improved under different ambient humidities. Meanwhile, the dew removing pipe releases heat when the refrigerant flows through the dew removing pipe, and certain influence is generated on medicines in the refrigerator. The change of the temperature in the box can be reduced and the storage effect of the medicine can be improved by adjusting the heat released during the operation of the dew removing pipe.
Optionally, the first set humidity has a value in the range of [20, 30]%, preferably the first set humidity has a value of 22%, 25% or 28%. The second set humidity is in the range of [50, 70], preferably 55%, 60% or 65%. Thus, the value of each set humidity is adapted to the heat released by the dew removing pipe under different humidity, and the dew removing effect of the refrigerator is improved and the temperature change in the refrigerator is reduced.
Referring to fig. 5, another method for controlling a refrigerator according to an embodiment of the present disclosure includes:
s210, the controller detects the ambient humidity.
S230, when the ambient humidity is less than or equal to the first set humidity, the controller controls the first outlet of the first gating mechanism to be opened and controls the second outlet to be closed.
S231, the controller controls the first outlet of the second gating mechanism to be opened and controls the second outlet to be closed.
S240, under the condition that the ambient humidity is greater than the first set humidity and less than or equal to the second set humidity, the controller controls the first outlet of the first gating mechanism to be opened and controls the second outlet to be closed.
S241, the controller controls the second outlet of the second gating mechanism to be opened and controls the first outlet to be closed.
S242, the controller controls the first outlet of the third gating mechanism to be opened and controls the second outlet to be closed.
S250, under the condition that the ambient humidity is greater than the second set humidity, the controller controls the second outlet of the first gating mechanism to be opened and controls the first outlet to be closed.
S251, the controller controls the first outlet of the second gating mechanism to be opened and controls the second outlet to be closed.
S252, the controller controls the second outlet of the third gating mechanism to be opened and controls the first outlet to be closed.
By adopting the control method of the refrigerator provided by the embodiment of the disclosure, when the ambient humidity is low, the state of each gating mechanism is set to enable the refrigerant to only flow through the condenser, and the dew removing pipe does not influence the temperature in the refrigerator. When the environment humidity is met, the state of each gating mechanism is set to enable the refrigerant to sequentially flow through the condenser and the dew removing pipe, and the influence of the temperature in the box is reduced when the dew removing requirement is met by the secondary high-temperature refrigerant with partial heat released in the condenser. When the ambient humidity is high, the state of each gating mechanism is set to enable the refrigerant to flow through the dew removing pipe and the condenser in sequence, and the high-temperature refrigerant discharged by the compressor flows into the dew removing pipe at first, so that the dew removing requirement is met.
In connection with the description of fig. 2, the control process of the refrigerator provided in the embodiment of the present disclosure will be described taking an example in which the first gating mechanism 13 includes the first check valve 131 and the second check valve 132, the second gating mechanism 14 includes the second solenoid valve 143, and the third gating mechanism 15 includes the third solenoid valve 153.
When the ambient humidity is lower than the first set humidity, the refrigerator is not required to be dehumidified. As the refrigerant flows through the dew removing tube 12, the temperature in the box body can be increased, which is unfavorable for the preservation of medicines. The controller opens the first check valve 131, closes the second check valve 132, controls the first outlet of the second solenoid valve 143 to be opened, and controls the second outlet to be closed. The flow direction of the refrigerant is as follows: the compressor 16 to the first check valve 131 to the condenser 11 to the second solenoid valve 143 to the filter 19 to the capillary tube 18 to the evaporator 17 to the compressor 16. At this time, the refrigerant flows only through the condenser 11, the dew removing tube 12 does not operate, and the dew removing tube 12 does not affect the temperature in the tank.
When the ambient humidity is greater than the first set humidity and less than or equal to the second set humidity, dewing is required. Because the environment with medium humidity has less condensation, excessive heat is not needed. The controller opens the first check valve 131, closes the second check valve 132, controls the second outlet of the second solenoid valve 143 to open and controls the first outlet to close, and controls the first outlet of the third solenoid valve 153 to open and controls the second outlet to close. The flow direction of the refrigerant is as follows: the compressor 16 to the first check valve 131 to the condenser 11 to the second solenoid valve 143 to the dewing pipe 12 to the third solenoid valve 153 to the filter 19 to the capillary tube 18 to the evaporator 17 to the compressor 16. At this time, the refrigerant flows through the dew removing tube 12 after flowing through the condenser 11, the heat dissipation of the condenser 11 reduces the temperature of the refrigerant, and the temperature of the refrigerant in the dew removing tube 12 is lower than the temperature of the refrigerant in the refrigerant inlet. Because the temperature of the refrigerant in the dew removing pipe 12 is low, the dew removing pipe 12 has little influence on the temperature in the box body, and can meet the dew removing requirement.
When the ambient humidity is greater than the second set humidity, a strong dew removal is required. Because the environment with high humidity is more condensed, higher heat is needed. The controller closes the first check valve 131, opens the second check valve 132, controls the first outlet of the second solenoid valve 143 to be opened and controls the second outlet to be closed, controls the second outlet of the third solenoid valve 153 to be opened and controls the first outlet to be closed. The flow direction of the refrigerant is as follows: the compressor 16 to the second check valve 132 to the dew removing pipe 12 to the third solenoid valve 153 to the condenser 11 to the second solenoid valve 143 to the filter 19 to the capillary tube 18 to the evaporator 17 to the compressor 16. At this time, the refrigerant flows through the condenser 11 after flowing through the dew removing tube 12, and the temperature of the refrigerant in the dew removing tube 12 is similar to the temperature of the refrigerant in the refrigerant inlet. The temperature of the refrigerant in the dew removing pipe 12 is high, so that the dew removing requirement can be met under the condition of high ambient humidity.
Referring to fig. 6, another method for controlling a refrigerator according to an embodiment of the present disclosure includes:
s210, the controller detects the ambient humidity.
S221, when the ambient humidity is less than or equal to the first set humidity, the controller sets the first gating mechanism and the second gating mechanism to be in a first state, and the control is ended.
S222, when the ambient humidity is greater than the first set humidity and less than or equal to the second set humidity, the controller sets the first gating mechanism, the second gating mechanism and the third gating mechanism to be in a second state, and the control is ended.
S223, in case that the ambient humidity is greater than the second set humidity, the controller sets the first gating mechanism, the second gating mechanism, and the third gating mechanism to a third state.
S260, the controller detects the temperature of the refrigerant.
S270, the controller determines the dew point temperature.
S280, the controller determines the difference between the dew point temperature and the refrigerant temperature.
And S290, the controller adjusts the power of the heating wire according to the temperature difference.
By adopting the control method of the refrigerator provided by the embodiment of the disclosure, the current condensation condition is determined according to the difference value of the refrigerant temperature and the dew point temperature. According to the different condensation conditions, the power of the heating wire is adjusted, the dew removing effect is improved, and meanwhile, the temperature change in the box is reduced.
The dew point temperature in step S270 is determined by calculation according to the formula in the prior art according to the ambient temperature and the ambient humidity, and will not be described in detail herein.
Referring to fig. 7, another method for controlling a refrigerator according to an embodiment of the present disclosure includes:
s210, the controller detects the ambient humidity.
S221, when the ambient humidity is less than or equal to the first set humidity, the controller sets the first gating mechanism and the second gating mechanism to be in a first state, and the control is ended.
S222, when the ambient humidity is greater than the first set humidity and less than or equal to the second set humidity, the controller sets the first gating mechanism, the second gating mechanism and the third gating mechanism to be in a second state, and the control is ended.
S223, in case that the ambient humidity is greater than the second set humidity, the controller sets the first gating mechanism, the second gating mechanism, and the third gating mechanism to a third state.
S260, the controller detects the temperature of the refrigerant.
S270, the controller determines the dew point temperature.
S280, the controller determines the difference between the dew point temperature and the refrigerant temperature.
S291, the controller turns off the heating wire in case the difference in temperature is less than the first set difference.
S292, when the difference between the temperatures is greater than or equal to the first set difference and less than the second set difference, the controller adjusts the power of the heating wire to the first set power.
And S293, when the difference value of the temperatures is larger than or equal to the second set difference value and smaller than the third set difference value, the controller adjusts the power of the heating wire to the second set power.
S294, the controller adjusts the power of the heating wire to the third set power in case the difference in temperature is greater than or equal to the third set difference.
By adopting the control method of the refrigerator provided by the embodiment of the disclosure, under different condensation conditions, the heating wires work with different powers so as to release heat required by dew removal. By selecting the proper power of the heating wire under the difference of different temperatures, the dew removing effect is improved and the temperature change in the box is reduced.
Optionally, the first set power is smaller than the second set power, and the second set power is smaller than the third set power. When the heating wire is selected, the value of each set power is a percentage of the total power, which is related to the size of the refrigerator, the refrigerating temperature of the medicines, the temperature and humidity of the environment and the like. The range of the first set power is [16, 24], and preferably the first set power is 18%, 20% or 22%. The second set power is in the range of [56, 64]%, preferably 58%, 60% or 62%. The third set power is in the range of 92, 100%, preferably 94%, 96% or 98%. Therefore, the power of the heating wire is controlled in a percentage mode, so that the complexity of setting the power of the heating wire under different conditions is avoided, and the dew removing effect of the refrigerator is improved.
Optionally, the value of the first set difference is in the range of [0,0.4 ]. DEG C, and preferably, the value of the first set difference is 0.1 ℃, 0.2 ℃ or 0.3 ℃. The second set difference has a value in the range of [1.8,2.2], preferably the second set difference has a value of 1.9 ℃,2 ℃ or 2.1 ℃. The third set difference has a value in the range of [4.8,5.2], preferably, the third set difference has a value of 4.9 ℃,5 ℃ or 5.1 ℃. Thus, the respective set differences are selected in correspondence with the amount of condensation generated so that the heater adjusts the power to assist in removing the condensation.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A refrigerator comprising a condenser (11) and a dew-removing tube (12), characterized in that it further comprises:
the first gating mechanism (13) is characterized in that the inlet is connected with the refrigerant inflow port, the first outlet is connected with the inlet of the condenser (11), and the second outlet is connected with the inlet of the dew removing pipe (12);
the second gating mechanism (14) is provided with an inlet connected with the outlet of the condenser (11), a first outlet connected with the refrigerant outflow port and a second outlet connected with the inlet of the dew removing pipe (12);
the third gating mechanism (15) is provided with an inlet connected with the outlet of the dew removing pipe (12), a first outlet connected with the refrigerant outflow port and a second outlet connected with the inlet of the condenser (11);
when the first gating mechanism (13) and the second gating mechanism (14) are set to a first state, the refrigerant flows through the condenser (11); when the first gating mechanism (13), the second gating mechanism (14) and the third gating mechanism (15) are set to be in the second state, the refrigerant sequentially flows through the condenser (11) and the dew removing pipe (12); when the first gating mechanism (13), the second gating mechanism (14) and the third gating mechanism (15) are set to be in a third state, the refrigerant sequentially flows through the dew removing pipe (12) and the condenser (11);
setting states of the first gating mechanism (13), the second gating mechanism (14) and the third gating mechanism (15) according to the ambient humidity;
the power of the heating wire is adjusted according to the difference value between the dew point temperature and the temperature of the refrigerant flowing into the dew removing pipe (12); when the difference value of the temperatures is larger than or equal to the first set difference value and smaller than the second set difference value, adjusting the power of the heating wire to be the first set power; when the difference value of the temperatures is larger than or equal to the second set difference value and smaller than the third set difference value, adjusting the power of the heating wire to be the second set power; when the difference value of the temperatures is larger than or equal to the third set difference value, adjusting the power of the heating wire to be the third set power; the first set power is less than the second set power, and the second set power is less than the third set power.
2. -the refrigerator according to claim 1, characterized in that the first gating mechanism (13) comprises:
a first one-way valve (131), the inlet of which is connected with the refrigerant inflow port, and the outlet of which is connected with the inlet of the condenser (11);
a second one-way valve (132) with an inlet connected to the refrigerant inlet and an outlet connected to the inlet of the dew removing pipe (12);
when the first gating mechanism (13) is set to a first state, the first one-way valve (131) is opened, and the second one-way valve (132) is closed; when the first gating mechanism (13) is set to the second state, the first check valve (131) is opened, and the second check valve (132) is closed; when the first gating mechanism (13) is set to the third state, the first check valve (131) is closed, and the second check valve (132) is opened.
3. -the refrigerator according to claim 1, characterized in that the first gating mechanism (13) comprises:
the first electromagnetic valve (133) is provided with an inlet connected with the refrigerant inflow port, a first outlet connected with the inlet of the condenser (11), and a second outlet connected with the inlet of the dew removing pipe (12);
when the first gating mechanism (13) is set to a first state, a first outlet of the first solenoid valve (133) is opened, and a second outlet is closed; when the first gating mechanism (13) is set to the second state, a first outlet of the first solenoid valve (133) is opened, and a second outlet is closed; when the first gating mechanism (13) is set to the third state, the first outlet of the first solenoid valve (133) is closed, and the second outlet is opened.
4. -the cooler according to claim 1, characterized in that the second gating mechanism (14) comprises:
a third one-way valve (141), the inlet of which is connected with the outlet of the condenser (11), and the outlet of which is connected with the refrigerant outflow port;
the inlet of the fourth one-way valve (142) is connected with the outlet of the condenser (11), and the outlet is connected with the inlet of the dew removing pipe (12);
when the second gating mechanism (14) is set to the first state, the third check valve (141) is opened, and the fourth check valve (142) is closed; when the second gating mechanism (14) is set to the second state, the third check valve (141) is closed, and the fourth check valve (142) is opened; when the second gating mechanism (14) is set to the third state, the third check valve (141) is opened, and the fourth check valve (142) is closed.
5. -the cooler according to claim 1, characterized in that the second gating mechanism (14) comprises:
the inlet of the second electromagnetic valve (143) is connected with the outlet of the condenser (11), the first outlet is connected with the refrigerant outflow port, and the second outlet is connected with the inlet of the dew removing pipe (12);
when the second gating mechanism (14) is set to the first state, a first outlet of the second electromagnetic valve (143) is opened, and a second outlet is closed; when the second gating mechanism (14) is set to the second state, the first outlet of the second solenoid valve (143) is closed and the second outlet is opened; when the second gating mechanism (14) is set to the third state, the first outlet of the second solenoid valve (143) is opened and the second outlet is closed.
6. -the cooler according to claim 1, characterised in that the third gating means (15) comprise:
a fifth one-way valve (151), the inlet of which is connected with the outlet of the dew removing pipe (12), and the outlet of which is connected with the refrigerant outflow port;
a sixth one-way valve (152), the inlet of which is connected with the outlet of the dew removing pipe (12), and the outlet of which is connected with the inlet of the condenser (11);
when the third gating mechanism (15) is set to the second state, the fifth check valve (151) is opened, and the sixth check valve (152) is closed; when the third gating mechanism (15) is set to the third state, the fifth check valve (151) is closed, and the sixth check valve (152) is opened.
7. -the cooler according to claim 1, characterised in that the third gating means (15) comprise:
the inlet of the third electromagnetic valve (153) is connected with the outlet of the dew removing pipe (12), the first outlet is connected with the refrigerant outflow port, and the second outlet is connected with the inlet of the condenser (11);
when the third gating mechanism (15) is set to the second state, the first outlet of the third electromagnetic valve (153) is opened, and the second outlet is closed; when the third gating mechanism (15) is set to the third state, the first outlet of the third solenoid valve (153) is closed and the second outlet is opened.
8. The refrigerator as claimed in any one of claims 1 to 7, further comprising:
a compressor (16), wherein the exhaust port is connected with the inlet of the first gating mechanism (13) as a refrigerant inflow port;
an evaporator (17) with an outlet connected to an inlet of the compressor (16);
a capillary tube (18), the outlet of which is connected with the inlet of the evaporator (17);
and the inlet of the filter (19) is used as a refrigerant outflow port and is connected with the first outlets of the second gating mechanism (14) and the third gating mechanism (15), and the outlet of the filter is connected with the inlet of the capillary tube (18).
9. The cooler of claim 8, further comprising:
the condenser (11), the dew removing pipe (12), the first gating mechanism (13), the second gating mechanism (14), the third gating mechanism (15), the compressor (16), the evaporator (17), the capillary tube (18) and the filter (19) are arranged in the box;
and the box door is connected with the box body and used for opening or closing the box body.
10. A control method of a refrigerator, for a refrigerator according to any one of claims 1 to 9, comprising:
detecting the ambient humidity;
setting the first gating mechanism and the second gating mechanism to a first state under the condition that the ambient humidity is less than or equal to a first set humidity;
setting the first gating mechanism, the second gating mechanism and the third gating mechanism to a second state in the case that the ambient humidity is greater than the first set humidity and less than or equal to the second set humidity;
setting the first gating mechanism, the second gating mechanism and the third gating mechanism to a third state under the condition that the ambient humidity is greater than the second set humidity;
determining a difference between the dew point temperature and the temperature of the refrigerant flowing into the dew removing pipe;
when the difference value of the temperatures is larger than or equal to the first set difference value and smaller than the second set difference value, adjusting the power of the heating wire to be the first set power;
when the difference value of the temperatures is larger than or equal to the second set difference value and smaller than the third set difference value, adjusting the power of the heating wire to be the second set power;
when the difference value of the temperatures is larger than or equal to the third set difference value, adjusting the power of the heating wire to be the third set power;
the first set power is less than the second set power, and the second set power is less than the third set power.
CN202210207015.XA 2022-03-03 2022-03-03 Refrigerator and control method thereof Active CN114719506B (en)

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CN112240648A (en) * 2019-07-16 2021-01-19 博西华电器（江苏）有限公司 Refrigeration device
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JPH04366343A (en) * 1991-06-12 1992-12-18 Hitachi Ltd Controlling system for dew preventing heater in air conditioner
CN101832692A (en) * 2009-03-13 2010-09-15 海尔集团公司 Device and method for removing dew on glass
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