Deicing device, heat pump unit, deicing control method of heat pump unit and electronic equipment

Abstract

The invention relates to the technical field of heat pump unit equipment, in particular to a deicing device, a heat pump unit, a deicing control method of the heat pump unit and electronic equipment. The deicing device comprises a deicing pipeline and a storage assembly, the deicing pipeline is wound on the circulating pipeline; the storage assembly comprises a first storage piece and a second storage piece which have opening and closing functions, the first storage piece is used for containing a deicing medium, and the second storage piece is used for containing an anti-freezing medium; the deicing device has a deicing mode, when icing exists in the circulating pipeline, the deicing device is switched to the deicing mode, the deicing medium flows out of the first storage piece and replaces the anti-freezing medium in the deicing pipeline, and deicing treatment is conducted on the circulating pipeline through the deicing pipeline; and the replaced anti-freezing medium flows into the second storage piece. According to the invention, the deicing program of the deicing device can be used for carrying out timely and effective deicing treatment on the circulation pipeline which is blocked due to icing, so that the smoothness of the circulation pipeline is ensured, and the use experience feeling of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump unit equipment, and in particular to a defrosting device, a heat pump unit and a defrosting control method thereof, and electronic equipment. Background Art

[0002] More and more families in the north are starting to use heat pump units for heating in winter because of their energy-saving, environmental protection, and high operational safety factors. When a water-fluorine heat exchanger is used, it can be used for indoor heating and can also provide hot water for users.

[0003] In severe weather such as the cold winter, the outdoor circulation pipeline may be blocked due to pipe freezing, causing the entire heat pump unit to shut down, seriously affecting the user experience. Summary of the invention

[0004] In view of this, the present invention provides a defrosting device, a heat pump unit and a defrosting control method thereof, and an electronic device, which solve the problem in the prior art that the circulation pipeline in the heat pump unit is blocked due to freezing, thereby reducing the user experience.

[0005] A first aspect of an embodiment of the present invention provides an ice-melting device for thawing a circulation pipeline blocked by ice. The ice-melting device comprises: an ice-melting pipeline and a storage assembly;

[0006] The de-icing pipeline is arranged around the circulation pipeline;

[0007] The storage assembly comprises a first storage member and a second storage member both having an opening and closing function, the first storage member is used to accommodate a de-icing medium, and the second storage member is used to accommodate an anti-freezing medium;

[0008] The defrosting device has a defrosting mode. When ice is formed in the circulation pipeline, the defrosting device switches to the defrosting mode, the defrosting medium flows out of the first storage element and replaces the antifreeze medium in the defrosting pipeline, and defrosts the circulation pipeline through the defrosting pipeline; wherein the replaced antifreeze medium flows into the second storage element.

[0009] In some embodiments, the ice-melting device further includes an anti-freeze mode;

[0010] When there is no icing in the circulation pipeline, the antifreeze medium in the second storage element flows out and drives the defrosting medium in the defrosting pipeline to flow, so that the defrosting medium in the defrosting pipeline flows into the first storage element.

[0011] In some embodiments, the deicing medium defrosts the frozen locations in the circulation pipeline in the form of heating.

[0012] In some embodiments, both ends of the ice-melting pipeline are connected to the circulation pipeline;

[0013] The defrosting device further includes a driving member, which is disposed in the defrosting pipeline or the circulation pipeline, and is configured to drive the antifreeze medium to flow from the defrosting pipeline to the second storage member, and to drive the defrosting medium to flow from the first storage member to the defrosting pipeline.

[0014] In some embodiments, the driving member includes at least a circulating water pump with forward and reverse rotation functions.

[0015] In some embodiments, a first controlled switch is provided on the pipeline between the first storage element and the ice-melting pipeline;

[0016] A second controlled switch is provided on the pipeline between the second storage element and the ice-melting pipeline, and the first storage element is connected to the top of the second storage element;

[0017] A third controlled switch is provided on the ice-melting pipeline between the first storage element and the second storage element;

[0018] A fourth controlled switch is provided at a connection position between the defrosting pipeline and the circulation pipeline, and the fourth controlled switch is located on the defrosting pipeline.

[0019] In some embodiments, the first controlled switch, the second controlled switch, the third controlled switch, and the fourth controlled switch are all controlled solenoid valves;

[0020] Wherein, the controlled solenoid valve is opened based on a control signal when in a power-on state; and the controlled solenoid valve is automatically closed when in a power-off state.

[0021] In some embodiments, the de-icing medium includes at least circulating water;

[0022] The antifreeze medium at least includes antifreeze liquid.

[0023] A second aspect of the present invention provides a heat pump unit, the heat pump unit comprising a heat exchanger, a water supply pipeline, a water return pipeline and the deicing device as described in the first aspect;

[0024] The outlet end of the heat exchanger is communicated with the inlet end of the water supply pipeline, and the inlet end of the heat exchanger is communicated with the outlet end of the water return pipeline;

[0025] The outlet of the water supply pipeline is connected to the inlet of the water return pipeline to form a heat exchange pipeline, wherein the heat exchange pipeline located in the outdoor part forms a circulation pipeline;

[0026] The ice-melting pipeline in the ice-melting device is arranged around the circulation pipeline, and one end of the ice-melting pipeline is communicated with the water supply pipeline, and the other end of the ice-melting pipeline is communicated with the water return pipeline.

[0027] In some embodiments, the heat pump unit further includes a fifth controlled switch, a sixth controlled switch, and a seventh controlled switch;

[0028] The fifth controlled switch is arranged on the water supply pipeline between the heat exchanger and the driving member in the ice-melting device, wherein the driving member is arranged on the water supply pipeline between the heat exchanger and the connection position between the ice-melting pipeline and the water supply pipeline;

[0029] The sixth controlled switch is arranged on the water supply pipeline located in the indoor part;

[0030] The seventh controlled switch is arranged on the water return pipe located in the indoor part;

[0031] Wherein, when the heat pump unit is in a power-off state, the circulating water in the heat exchange pipeline is discharged through the seventh controlled switch.

[0032] In some embodiments, the fifth controlled switch, the sixth controlled switch, and the seventh controlled switch are all controlled solenoid valves;

[0033] Wherein, when the fifth controlled switch and the seventh controlled switch are in a power-on state, they are turned on based on a control signal, and when the fifth controlled switch and the seventh controlled switch are in a power-off state, they are automatically turned on;

[0034] The sixth controlled switch is opened based on a control signal when it is in a power-on state, and is automatically closed when it is in a power-off state.

[0035] In some embodiments, the sixth controlled switch and the seventh controlled switch are located at the lowest point of the heat pump unit.

[0036] A third aspect of an embodiment of the present invention provides a deicing control method for a heat pump unit, the deicing control method being applied to the heat pump unit as described in the second aspect, the deicing control method comprising:

[0037] When ice formation is detected in the circulation pipeline of the heat pump unit, the heat pump unit switches to a de-icing mode;

[0038] Based on the compressor in the heat pump unit, the circulating medium in the heat exchanger is heated, and when the temperature of the circulating medium is higher than a set value, the fourth controlled switch, the first controlled switch and the second controlled switch are controlled to be in an open state;

[0039] Controlling the driving member to reverse at a low speed to drive the antifreeze medium in the ice-melting pipeline into the second storage member;

[0040] Acquiring a liquid level value of the antifreeze medium in the second storage element;

[0041] When the liquid level value is higher than the first water level value, the third controlled switch is controlled to be turned on while the first controlled switch is turned off, and then the second controlled switch is controlled to be turned off. In this state, the heated circulating medium and the ice-melting medium fill part of the circulating pipeline and the entire ice-melting pipeline;

[0042] After a predetermined time, the fourth controlled switch is controlled to be closed, and it is determined whether the circulation pipeline has finished defrosting.

[0043] In some embodiments, determining whether the circulation pipeline has finished defrosting includes:

[0044] If the driving member stops rotating, the fourth controlled switch is controlled to be turned on, and the circulation pipeline is continued to be defrosted;

[0045] If the driving member continues to rotate at a low speed, this state is maintained, and the compressor is controlled to continue heating. Then, the speed of the driving member is controlled to increase slowly until the speed of the driving member is equal to the set speed. After stably running for a set time, the driving member is controlled to stop rotating and then rotate forward, the first controlled switch and the second controlled switch are controlled to be turned on, and the third controlled switch is closed to drive the antifreeze medium from the second storage member to the thawing pipeline through the driving member, until the liquid level value of the defrosting medium in the first storage member is equal to or greater than the second water level value, the fourth controlled switch, the first controlled switch and the second controlled switch are controlled to be turned off, and the defrosting mode is ended.

[0046] In some embodiments, the de-icing control method of the heat pump unit further includes:

[0047] When the heat pump unit is powered off, the fifth controlled switch and the seventh controlled switch are automatically turned on, and the sixth controlled switch is automatically turned off, so as to discharge all the circulating medium in the circulating pipeline;

[0048] After the heat pump unit is powered on again, the seventh controlled switch is automatically closed, and the fifth controlled switch and the sixth controlled switch are controlled to be turned on, so as to replenish the circulating medium into the circulating pipeline;

[0049] After the circulation pipeline is filled with the circulation medium, the sixth controlled switch and the fifth controlled switch are controlled to be closed, and then normal operation begins.

[0050] A fourth aspect of an embodiment of the present invention provides an electronic device, the electronic device comprising

[0051] a memory for storing one or more computer executable instructions;

[0052] A processor is used to call and execute computer executable instructions in the memory, thereby implementing the method described in the third aspect.

[0053] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0054] In the defrosting device, heat pump unit and defrosting control method and electronic device of the present invention, the defrosting device is used to defrost a circulation pipeline blocked by ice. The defrosting device includes a defrosting pipeline and a storage component. The defrosting pipeline is arranged around the circulation pipeline. The storage component includes a first storage component and a second storage component both of which have opening and closing functions. The first storage component stores a defrosting medium, and the second storage component stores an antifreeze medium. When ice is present in the circulation pipeline, the defrosting device switches to a defrosting mode, wherein the defrosting medium in the first storage component flows out and replaces the antifreeze medium in the defrosting management, so as to defrost the circulation pipeline through the defrosting pipeline, and the antifreeze medium in the defrosting pipeline is transported to the second storage component. Through the above technical scheme, when the circulation inside the circulation pipeline is smooth, the antifreeze medium in the defrosting pipeline can prevent the defrosting device from freezing in severe weather such as severe cold. When ice is present inside the circulation pipeline, the defrosting device switches to the defrosting mode, and the defrosting medium can be used to defrost the frozen positions in the circulation pipeline, so as to ensure the smoothness of the circulation pipeline during use and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0056] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0057] Figure 1 is a structural schematic diagram of a heat pump unit according to an embodiment of the present invention;

[0058] Figure 2 The present invention is a flowchart of a method for controlling the defrosting of a heat pump unit according to an embodiment of the present invention.

[0059] Marking Description:

[0060] 100, heat pump unit; 110, heat exchanger; 120, fifth controlled switch; 130, sixth controlled switch; 140, seventh controlled switch;

[0061] 200, circulation pipeline; 210, water supply pipeline; 220, return pipeline;

[0062] 300, ice-melting pipeline; 310, fourth controlled switch;

[0063] 400, storage component; 410, first storage element; 411, first controlled switch; 420, second storage element; 421, second controlled switch; 430, third controlled switch;

[0064] 500. Driving parts. DETAILED DESCRIPTION

[0065] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0067] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0068] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0069] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0070] like Figure 1 As shown, an exemplary embodiment of the present invention provides an ice-melting device, which is used to melt ice on a circulation pipeline 200 blocked by ice. The ice-melting device includes an ice-melting pipeline 300 and a storage assembly 400.

[0071] The circulation pipeline 200 can be applied to the heat pump unit 100, and the heat pump unit 100 includes a heat exchanger 110, a water supply pipeline 210 and a return pipeline 220. The heat exchanger 110 may include but is not limited to a water-fluorine heat exchanger. Among them, the water inlet end of the water supply pipeline 210 is connected to the water outlet end of the heat exchanger 110, and the water outlet end of the water supply pipeline 210 is connected to the return end of the return pipeline 220. It should be noted that a branch pipeline (not shown in the figure) is provided on the water supply pipeline 210 located in the indoor part, and a plurality of outlets are provided on the branch pipeline, so that indoor users can obtain hot water in the water supply pipeline 210 through any outlet, and at the same time, the branch pipeline can also be used for indoor heating.

[0072] The water outlet end of the return water pipe 220 is connected to the water inlet end of the heat exchanger 110, thereby forming a complete hot water supply and heating cycle through the return water pipe 220, the heat exchanger 110 and the water supply pipe 210.

[0073] It should be noted that the water supply pipeline 210 and the water return pipeline 220 form a circulation pipeline 200. Among them, the pipeline of the circulation pipeline 200 located in the indoor part can be used for indoor heating, or provide hot water for users.

[0074] The defrosting pipeline 300 is wound around the circulation pipeline 200 in a coiled manner. Specifically, the defrosting pipeline 300 is wound around the circulation pipeline 200 located in the outdoor part, or the defrosting pipeline 300 can also be wound around the circulation pipeline 200 in the outdoor part and the circulation pipeline 200 located in the indoor part that is prone to ice formation.

[0075] Among them, taking the plane parallel to the horizontal plane as the projection plane, in the projection of the defrosting pipeline 300 located above the central axis plane of the circulation pipeline 200 on the projection plane, the distance between two adjacent defrosting pipelines 300 is 0.5 to 3 times the diameter of the defrosting pipeline 300, so as to ensure the efficiency of the defrosting process performed by the defrosting pipeline 300. It should be noted that the central axis plane of the circulation pipeline 200 is parallel to the projection plane.

[0076] The storage assembly 400 includes a first storage element 410 and a second storage element 420. The first storage element 410 and the second storage element 420 both have an opening and closing function, for example, a control valve is provided at the outlet position of the first storage element 410 and the second storage element 420. The first storage element 410 is used to accommodate a deicing medium, and the second storage element 420 is used to store an antifreeze medium.

[0077] In one example, the de-icing medium includes at least but is not limited to circulating water, and the anti-freezing medium includes at least but is not limited to anti-freeze liquid.

[0078] The defrosting device has a defrosting mode, wherein when the control system of the heat pump unit 100 determines that there is ice formation in the circulation pipeline 200, the control system controls the defrosting device to switch to the defrosting mode. At this time, the defrosting medium can be extracted from the first storage element 410 and transported to the defrosting pipeline 300 through a driving structure such as a circulation pump, so as to replace the original antifreeze medium in the defrosting pipeline 300, that is, the antifreeze medium in the defrosting pipeline 300 is transported to the second storage element 420, so that the defrosting pipeline 300 is filled with the defrosting medium, thereby utilizing the defrosting medium to defrost the frozen position in the circulation pipeline 200.

[0079] It should be noted that the control system of the heat pump unit 100 can adopt the control system in the prior art, as long as the control system can control various startup functions of the heat pump unit 100, and the specific structure type and specific control logic of the control system will not be repeated here.

[0080] In some embodiments, a circulation pump can be provided in the defrosting pipeline 300, and an electric heating element can be provided in the first storage element 410, and the circulating water in the first storage element 410 can be quickly heated by the electric heating element. Then, under the driving action of the circulation pump, on the one hand, the antifreeze medium in the defrosting pipeline 300 is transported to the second storage element 420, and on the other hand, the heated circulating water is transported to the defrosting pipeline 300, so that the heated circulating water is used to defrost the frozen positions in the circulating pipeline 200 to ensure the patency of the circulating pipeline 200.

[0081] In this embodiment, when the circulation inside the circulation pipeline 200 is smooth, the antifreeze medium in the defrosting pipeline 300 can prevent the defrosting device from freezing in severe weather such as severe cold. When ice is present inside the circulation pipeline 200, the defrosting device switches to the defrosting mode, so that the defrosting medium can be used to defrost the frozen positions in the circulation pipeline 200, thereby ensuring the patency of the circulation pipeline 200 during use and improving the user experience.

[0082] like Figure 1 As shown, in some embodiments, the ice-melting device also includes an antifreeze mode. When the control system of the heat pump unit 100 determines that there is no ice in the circulation pipeline 200, or after the ice-melting device melts the ice position in the circulation pipeline 200 and the circulation pipeline 200 is unobstructed, the antifreeze medium in the second storage element 420 is extracted and transported to the ice-melting pipeline 300 by using the circulation pump on the ice-melting pipeline 300. At the same time, under the action of the circulation pump, the antifreeze medium drives the ice-melting medium in the ice-melting pipeline 300 to flow, and pushes the ice-melting medium in the ice-melting pipeline 300 to the first storage element 410.

[0083] That is to say, under normal conditions, or when the defrosting device is switched from the defrosting mode to the antifreeze mode, the defrosting pipeline 300 is filled with the antifreeze medium, so that the defrosting pipeline 300 will not freeze inside in severe weather such as severe cold, thereby ensuring the patency of the inside of the defrosting pipeline 300 when the defrosting pipeline 300 performs the next defrosting process.

[0084] like Figure 1 As shown, in some embodiments, the de-icing medium is heated to defrost the iced locations in the circulation pipeline 200 .

[0085] In one example, the circulation pipeline 200 is applied to the heat pump unit 100, and a water-fluorine heat exchanger is provided in the heat pump unit 100. Therefore, the water-fluorine heat exchanger can be used to heat the defrosting medium in the first storage element 410, and then, the heated defrosting medium is transported to the defrosting pipeline 300 under the action of the circulation pump. Finally, the defrosting medium exchanges heat with the ice at the frozen position in the circulation pipeline 200, and the ice at the frozen position in the circulation pipeline 200 is eliminated, thereby ensuring the patency of the circulation pipeline 200.

[0086] like Figure 1 As shown, in some embodiments, both ends of the defrosting pipeline 300 are respectively connected to the circulation pipeline 200. Specifically, one end of the defrosting pipeline 300 is connected to the water supply pipeline 210 in the circulation pipeline 200, and the other end of the defrosting pipeline 300 is connected to the return water pipeline 220 in the circulation pipeline 200. The defrosting pipeline 300 is arranged around the water supply pipeline 210 and the return water pipeline 220.

[0087] The ice-melting device further includes a driving member 500 . The driving member 500 is disposed on the ice-melting pipeline 300 , or the driving member 500 is disposed on the circulation pipeline 200 .

[0088] In a specific example, the driving member 500 may include but is not limited to a circulating water pump having a forward and reverse rotation function. The circulating water pump is arranged on the return water pipeline 220 of the circulating pipeline 200 and is adjacent to the connection position between the return water pipeline 220 and the ice-melting pipeline 300. Specifically, the circulating water pump is arranged on the return water pipeline 220 between the ice-melting pipeline 300 and the water-fluorine heat exchanger.

[0089] Among them, the driving component 500, i.e., the circulating water pump, is configured to, in the defrosting mode, drive the antifreeze medium to flow from the defrosting pipeline 300 to the second storage component 420, and drive the defrosting medium to flow from the first storage component 410 to the defrosting pipeline 300; and, in the antifreeze mode, drive the antifreeze medium to flow out of the second storage component 420 and flow into the defrosting pipeline 300, and at the same time, transport the defrosting medium in the defrosting pipeline 300 to the first storage component 410.

[0090] That is, when there is no ice in the circulation pipeline 200, the defrosting pipeline 300 is filled with antifreeze medium. When the control system of the heat pump unit 100 determines that there is ice in the circulation pipeline 200, the driving member 500 is used to fill the defrosting pipeline 300 with heated circulating water, wherein the circulating water can be heated by the water-fluorine heat exchanger, and then the heated circulating water is used to defrost the ice position in the circulation pipeline 200.

[0091] like Figure 1As shown, in some embodiments, a first controlled switch 411 is provided on the pipeline between the first storage element 410 and the ice-melting pipeline 300. The first controlled switch 411 is a controlled solenoid valve, wherein the controlled solenoid valve is opened based on a control signal when the power is on; and the controlled solenoid valve is automatically closed when the power is off. That is, when the power is on, the first controlled switch 411 is in a normally closed state, and the first controlled switch 411 will only be opened when an opening instruction is issued to the first controlled switch 411 through the control system. At this time, the ice-melting medium can be extracted from the first storage element 410 through the driving element 500 and transported to the ice-melting pipeline 300.

[0092] A second controlled switch 421 is provided on the pipeline between the second storage element 420 and the ice-melting pipeline 300. The second controlled switch 421 is a controlled electromagnetic valve, wherein the controlled electromagnetic valve is opened based on a control signal when the power is on; and the controlled electromagnetic valve is automatically closed when the power is off. That is, when the power is on, the second controlled switch 421 is in a normally closed state. When an opening instruction is sent to the second controlled switch 421 through the control system, the second controlled switch 421 will be opened. At this time, the antifreeze medium can be extracted from the second storage element 420 through the driving element 500 and transported to the ice-melting pipeline 300.

[0093] In order to improve the sealing performance of the first storage element 410 and the second storage element 420, and ensure that the ice-melting medium and the antifreeze medium therein are not contaminated by external impurities, the tops of the first storage element 410 and the second storage element 420 are connected. It should be noted that when the ice-melting pipeline 300 is full of the antifreeze medium, the highest water level of the ice-melting medium in the first storage element 410 is lower than the position of the top, that is, the ice-melting medium will not flow from the first storage element 410 to the second storage element 420. When the ice-melting pipeline 300 is full of the ice-melting medium, the highest water level of the antifreeze medium in the second storage element 420 is also lower than the position of the top, that is, the antifreeze medium will not flow from the second storage element 420 to the first storage element 410.

[0094] A third controlled switch 430 is provided on the ice-melting pipeline 300 between the first storage element 410 and the second storage element 420. The third controlled switch 430 is a controlled electromagnetic valve, wherein the controlled electromagnetic valve is opened based on a control signal when it is powered on; and the controlled electromagnetic valve is automatically closed when it is powered off. That is, when powered on, the third controlled switch 430 is in a normally closed state.

[0095] A fourth controlled switch 310 is provided at the connection position between the defrosting pipeline 300 and the circulation pipeline 200. The fourth controlled switch 310 is a controlled electromagnetic valve, wherein the controlled electromagnetic valve is opened based on a control signal when it is powered on; and the controlled electromagnetic valve is automatically closed when it is powered off. That is, when powered on, the fourth controlled switch 310 is in a normally closed state.

[0096] In the above example, when the control system detects that ice has formed at a certain position in the circulation pipeline 200 , the control system controls the ice-melting device to switch from the antifreeze mode to the ice-melting mode.

[0097] At this time, the compressor in the water-fluorine heat exchanger is used to heat the water in the heat exchange tube inside it. When the water temperature reaches a certain temperature, the fourth controlled switch 310, the first controlled switch 411 and the second controlled switch 421 are turned on. At this time, the third controlled switch 430 is in the closed state.

[0098] The driving member 500, i.e., the circulating water pump, rotates in reverse at a low speed to push the antifreeze medium in the ice-melting pipeline 300 into the second storage member 420. When the liquid level in the second storage member 420 is higher than the first water level value, it indicates that the ice-melting pipeline 300 is full of hot water. The first water level value can be measured by a detection device such as a water level sensor provided inside the second storage member 420.

[0099] When the liquid level in the second storage element 420 is higher than the first water level value, the control system controls the third controlled switch 430 to open, and the first controlled switch 411 is closed at the same time, and then the second controlled switch 421 is closed to ensure that each position in the entire defrosting pipeline 300 is always filled with hot water. Finally, the hot water is used to defrost the frozen positions in the circulation pipeline 200.

[0100] After running for a period of time, the fourth controlled switch 310 is closed. If the driving member 500, i.e., the circulating water pump, stops rotating due to pipeline blockage, it indicates that the ice position in the circulating pipeline 200 has not been connected. Then, the fourth controlled switch 310 is controlled and opened to continue the ice-melting process. Among them, if the driving member 500 can rotate at a low speed at this time, it indicates that the ice position in the circulating pipeline 200 has been connected. Keeping this state, the compressor is controlled to continue to work and heat, and the speed of the driving member 500 increases slowly until the speed of the driving member 500 increases to the maximum. After a period of stable operation, the ice-melting process can be completed.

[0101] Finally, the driving member 500 is controlled to stop and then start to rotate forward, and the control system controls and opens the first controlled switch 411 and the second controlled switch 421, and closes the third controlled switch 310, so as to extract the antifreeze medium from the second storage member 420 through the driving member 500 and push it into the ice-melting pipeline 300. When the liquid level of the ice-melting medium in the first storage member 410 is higher than the second water level value, it indicates that the ice-melting pipeline 300 is full of the antifreeze medium. At this time, the first controlled switch 411, the second controlled switch 421 and the fourth controlled switch 310 are controlled and closed, and the ice-melting mode is exited.

[0102] The second water level value may be measured by a detection device such as a water level sensor disposed inside the first storage element 410 .

[0103] It should be noted that when the defrosting mode is activated or deactivated, a small amount of antifreeze medium (ie, antifreeze liquid) will enter the circulation pipeline 200 , but this portion of antifreeze medium will not affect the wet cooling effect of the circulation pipeline 200 .

[0104] like Figure 1 As shown, an exemplary embodiment of the present invention provides a heat pump unit 100. The heat pump unit 100 includes a heat exchanger 110, a water supply pipeline 210 and a water return pipeline 220. The heat exchanger 110 may include but is not limited to a water-fluorine heat exchanger.

[0105] The outlet of the heat exchanger 110 is connected to the inlet of the water supply pipeline 210, and the inlet of the heat exchanger 110 is connected to the outlet of the water return pipeline 220. The outlet of the water supply pipeline 210 is connected to the inlet of the water return pipeline 220 to form a heat exchange pipeline. Among them, the heat exchange pipeline located in the outdoor part forms a circulation pipeline 200.

[0106] It should be noted that a branch pipeline (not shown in the figure) is provided on the water supply pipeline 210 located in the indoor part, and several outlets are provided on the branch pipeline to facilitate indoor users to obtain hot water in the water supply pipeline 210 through any outlet. At the same time, the branch pipeline can also be used for indoor heating.

[0107] The defrosting pipeline 300 in the defrosting device is wound around the circulation pipeline 200 , and one end of the defrosting pipeline 300 is communicated with the water supply pipeline 210 , and the other end of the defrosting pipeline 300 is communicated with the water return pipeline 220 .

[0108] Likewise, the storage assembly 400 in the ice-melting device includes a first storage element 410 and a second storage element 420, and the driving element 500 in the ice-melting device is disposed on the return water pipeline 220 between the ice-melting pipeline 300 and the water-fluorine heat exchanger.

[0109] A first controlled switch 411 is provided on the pipeline between the first storage element 410 and the ice-melting pipeline 300. A second controlled switch 421 is provided on the pipeline between the second storage element 420 and the ice-melting pipeline 300. A third controlled switch 430 is provided on the ice-melting pipeline 300 between the first storage element 410 and the second storage element 420. A fourth controlled switch 310 is provided at the connection position between the ice-melting pipeline 300 and the circulation pipeline 200.

[0110] The first controlled switch 411, the second controlled switch 421, the third controlled switch 430 and the fourth controlled switch 310 are all controlled electromagnetic valves. When the controlled electromagnetic valves are powered on, they are opened based on the control signal; and when the controlled electromagnetic valves are powered off, they are automatically closed. That is, when powered on, the first controlled switch 411, the second controlled switch 421, the third controlled switch 430 and the fourth controlled switch 310 are all in a normally closed state.

[0111] The heat pump unit 100 further includes a fifth controlled switch 120 , a sixth controlled switch 130 and a seventh controlled switch 140 .

[0112] The fifth controlled switch 120 is disposed on the water supply pipeline 210 between the heat exchanger 110 and the driving member 500 in the ice-melting device, wherein the driving member 500 is disposed on the water supply pipeline 210 between the heat exchanger 110 and the connection position between the ice-melting pipeline 300 and the water supply pipeline 210 .

[0113] The sixth controlled switch 130 is arranged on the water supply pipeline 210 located in the indoor part. The seventh controlled switch 140 is arranged on the water return pipeline 220 located in the indoor part. When the heat pump unit 100 is in the power-off state, the circulating water in the heat exchange pipeline is discharged through the seventh controlled switch 140. That is, when the heat pump unit 100 is in the power-off state, in order to avoid the failure of the antifreeze protection function of the heat pump unit 100, the seventh controlled switch 140 is used to discharge all the circulating water in the heat exchange pipeline, thereby achieving the purpose of antifreeze.

[0114] In one example, the sixth controlled switch 130 and the seventh controlled switch 140 are both arranged at the lowest point of the heat pump unit 100. When the heat pump unit 100 is in a power-off state, the circulating water in the heat exchange pipeline can be completely discharged through the seventh controlled switch 140 by utilizing the effect of gravity.

[0115] like Figure 1As shown, in some embodiments, the fifth controlled switch 120, the sixth controlled switch 130, and the seventh controlled switch 140 are all controlled solenoid valves. When the fifth controlled switch 120 and the seventh controlled switch 140 are in the power-on state, they are opened based on the control signal, and when the fifth controlled switch 120 and the seventh controlled switch 140 are in the power-off state, they are automatically opened. When the sixth controlled switch 130 is in the power-on state, it is opened based on the control signal, and when the sixth controlled switch 130 is in the power-off state, it is automatically closed.

[0116] In this example, when the heat pump unit 100 is in a power-off state, the fifth controlled switch 120 and the seventh controlled switch 140 are automatically turned on to ensure the pressure balance in the heat exchange pipeline when the circulating water is discharged from the heat exchange pipeline, thereby ensuring that the circulating water can be quickly discharged from the heat exchange pipeline.

[0117] In the above example, when the heat pump unit 100 stops working due to an unexpected power outage or an emergency situation, the circulation pipeline 200 in the outdoor part of the heat pump unit 100 may freeze in a low temperature environment, and all controlled solenoid valves in the heat pump unit 100 lose control. Among them, the fifth controlled switch 120 and the seventh controlled switch 140 will automatically open in the power-off state, so that the circulating water can be quickly discharged from the heat exchange pipeline.

[0118] When the heat pump unit 100 is powered on, the control system controls the seventh controlled switch 140 to be closed, and then controls the sixth controlled switch 130 to be opened, so as to inject water into the water supply pipeline 210 through the sixth controlled switch 130. In order to ensure the smoothness of the water injection process, the control system controls the fifth controlled switch 120 to continue to be in the open state. When the water in the entire heat exchange pipeline is filled, the sixth controlled switch 130 is controlled to be closed, and the fifth controlled switch 120 is controlled to be closed.

[0119] like Figure 2 As shown, an exemplary embodiment of the present invention provides a defrosting control method for a heat pump unit, and the defrosting control method is applied to the heat pump unit 100 of any of the above embodiments.

[0120] The de-icing control method of the heat pump unit includes the following steps:

[0121] Step S100: When ice formation is detected in the circulation pipeline of the heat pump unit, the heat pump unit switches to a defrosting mode.

[0122] Step S200: heating the circulating medium in the heat exchanger based on the compressor in the heat pump unit, and when the temperature of the circulating medium is higher than the set value, controlling the fourth controlled switch, the first controlled switch and the second controlled switch to be in the on state.

[0123] Step S300: Control the driving member to reverse at a low speed to drive the antifreeze medium in the ice-melting pipeline into the second storage member.

[0124] Step S400: obtaining the liquid level value of the antifreeze medium in the second storage element.

[0125] Step S500: When the liquid level value is higher than the first water level value, the third controlled switch is controlled to be turned on while the first controlled switch is turned off, and then the second controlled switch is controlled to be turned off. In this state, the heated circulating medium and the ice-melting medium fill part of the circulating pipeline and the entire ice-melting pipeline.

[0126] Step S600: After a predetermined time, the fourth controlled switch is controlled to be closed, and it is determined whether the circulation pipeline has finished defrosting.

[0127] In step S100, after the control system of the heat pump unit 100 determines that ice has formed in the circulation pipeline 200 of the heat pump unit 100, the control system controls the heat pump unit 100 to switch to the de-icing mode.

[0128] In step S200, the control system controls the compressor in the heat pump unit 100 to work and heats the circulating medium in the heat exchanger 110. The circulating medium may include but is not limited to circulating water. When the temperature of the circulating medium is higher than the set value, the control system controls the fourth controlled switch 310, the first controlled switch 411 and the second controlled switch 421 to be turned on, and at this time, the third controlled switch 430 is in a closed state.

[0129] In one example, the set value may be any value between 50° C. and 90° C., wherein the set value may be flexibly set according to the environmental location or altitude of the heat pump unit 100 , and is not specifically limited here.

[0130] In step S300, the control system controls the driving member 500 to reverse at a low speed to push the antifreeze medium in the ice-melting pipeline 300 into the second storage member 420, and at the same time, the heated circulating water fills the ice-melting pipeline 300. When the driving member 500 is provided with high, medium and low gears, the driving member 500 can be controlled to reverse at a low gear.

[0131] In step S400 , the liquid level value of the antifreeze medium in the second storage element 420 is obtained by a detection device such as a water level sensor disposed inside the second storage element 420 .

[0132] In step S500, when the liquid level value is higher than the first water level value, the control system controls the third controlled switch 430 to be turned on and the first controlled switch 411 to be turned off, and then controls the second controlled switch 421 to be turned off. In this state, it indicates that the circulating water and the ice-melting medium have filled part of the circulating pipeline 200 and the entire ice-melting pipeline 300 after heating. The first water level value can be any value between 60% and 80% of the height in the second storage element 420.

[0133] In step S400, after a predetermined time, the control system controls the fourth controlled switch 310 to close, and determines whether the circulation pipeline 200 has finished thawing through the control system. The predetermined time can be flexibly set according to the different environmental locations or altitudes of the heat pump unit 100, and is not specifically limited here.

[0134] In one example, if the driving member 500, i.e., the circulating water pump, stops rotating due to pipeline blockage, it indicates that the ice position in the circulating pipeline 200 has not been connected, and then the fourth controlled switch 310 is controlled and turned on to continue the ice-melting process. If the driving member 500 can rotate at a low speed at this time, it indicates that the ice position in the circulating pipeline 200 has been connected, and this state is maintained, and the compressor is controlled to continue to work and heat, and the speed of the driving member 500 increases slowly until the speed of the driving member 500 increases to the maximum. After a period of stable operation, the ice-melting process can be completed.

[0135] Finally, the driving member 500 is controlled to stop and then start to rotate forward. The control system controls and opens the first controlled switch 411 and the second controlled switch 421, and closes the third controlled switch 310, so that the antifreeze medium is extracted from the second storage member 420 through the driving member 500 and pushed into the ice-melting pipeline 300. When the liquid level of the ice-melting medium in the first storage member 410 is higher than the second water level value, it indicates that the ice-melting pipeline 300 is full of the antifreeze medium. At this time, the first controlled switch 411, the second controlled switch 421 and the fourth controlled switch 310 are controlled and closed to exit the ice-melting mode. Among them, the second water level value can be any value between 60% and 80% of the height in the first storage member 410.

[0136] In some embodiments, when the heat pump unit 100 is powered off, the fifth controlled switch 120 and the seventh controlled switch 140 are automatically turned on, and the sixth controlled switch 130 is automatically turned off, so that the circulating medium in the circulation pipeline 200, such as circulating water, is completely discharged through the seventh controlled switch 140.

[0137] After the heat pump unit 100 is powered on again, the seventh controlled switch 140 is automatically closed, and at the same time, the fifth controlled switch 120 is controlled to continue to be in the on state, and the sixth controlled switch 130 is opened to replenish the circulating medium into the circulation pipeline 200 through the sixth controlled switch 130.

[0138] After the circulating medium in the circulating pipeline 200 is fully replenished, the sixth controlled switch 130 and the fifth controlled switch 120 are controlled to be closed, and normal operation begins.

[0139] In this example, when the heat pump unit 100 is in a power-off state, all controlled solenoid valves lose control. In order to avoid the failure of the antifreeze protection function of the entire heat pump unit 100, the seventh controlled switch 140 is used to discharge all the circulating water in the heat exchange pipeline, thereby achieving the purpose of antifreeze and improving the service life of the heat pump unit 100 and the user's experience.

[0140] An exemplary embodiment of the present invention provides an electronic device, which includes a processor (not shown in the figure) and a memory (not shown in the figure) connected to the processor. The memory is used to store one or more computer executable instructions. The computer executable instructions can be called by the processor and execute the deicing control method of the heat pump unit in any of the above embodiments.

[0141] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0142] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A deicing device for deicing a circulation pipeline blocked by ice, characterized in that: The de-icing device comprises: a de-icing pipeline and a storage component; The de-icing pipeline is arranged around the circulation pipeline; The storage assembly comprises a first storage element and a second storage element both having an opening and closing function, the first storage element is used to accommodate a de-icing medium, and the second storage element is used to accommodate an anti-freezing medium; The defrosting device has a defrosting mode. When ice is formed in the circulation pipeline, the defrosting device switches to the defrosting mode, the defrosting medium flows out of the first storage element and replaces the antifreeze medium in the defrosting pipeline, and defrosts the circulation pipeline through the defrosting pipeline; wherein the replaced antifreeze medium flows into the second storage element.

2. The ice-melting device according to claim 1, characterized in that: The de-icing device also includes an anti-freeze mode; When there is no icing in the circulation pipeline, the antifreeze medium in the second storage element flows out and drives the defrosting medium in the defrosting pipeline to flow, so that the defrosting medium in the defrosting pipeline flows into the first storage element.

3. The ice-melting device according to claim 1, characterized in that: The deicing medium defrosts the frozen positions in the circulation pipeline in the form of heating.

4. The ice-melting device according to claim 1, characterized in that: Both ends of the ice-melting pipeline are connected to the circulation pipeline; The defrosting device further includes a driving member, which is disposed in the defrosting pipeline or the circulation pipeline, and is configured to drive the antifreeze medium to flow from the defrosting pipeline to the second storage member, and to drive the defrosting medium to flow from the first storage member to the defrosting pipeline.

5. The ice-melting device according to claim 4, characterized in that: The driving member at least comprises a circulating water pump with forward and reverse rotation functions.

6. The ice-melting device according to claim 4, characterized in that: A first controlled switch is provided on the pipeline between the first storage element and the ice-melting pipeline; A second controlled switch is provided on the pipeline between the second storage element and the ice-melting pipeline, and the first storage element is connected to the top of the second storage element; A third controlled switch is provided on the ice-melting pipeline between the first storage element and the second storage element; A fourth controlled switch is provided at a connection position between the defrosting pipeline and the circulation pipeline, and the fourth controlled switch is located on the defrosting pipeline.

7. The ice-melting device according to claim 6, characterized in that: The first controlled switch, the second controlled switch, the third controlled switch and the fourth controlled switch are all controlled solenoid valves; Wherein, the controlled solenoid valve is opened based on a control signal when in a power-on state; and the controlled solenoid valve is automatically closed when in a power-off state.

8. The ice-melting device according to any one of claims 1 to 7, characterized in that: The de-icing medium at least includes circulating water; The antifreeze medium at least includes antifreeze liquid.

9. A heat pump unit, characterized in that: The heat pump unit comprises a heat exchanger, a water supply pipeline, a water return pipeline and the ice-melting device according to any one of claims 1 to 8; The outlet end of the heat exchanger is communicated with the inlet end of the water supply pipeline, and the inlet end of the heat exchanger is communicated with the outlet end of the water return pipeline; The outlet of the water supply pipeline is connected to the inlet of the water return pipeline to form a heat exchange pipeline, wherein the heat exchange pipeline located in the outdoor part forms a circulation pipeline; The ice-melting pipeline in the ice-melting device is arranged around the circulation pipeline, and one end of the ice-melting pipeline is communicated with the water supply pipeline, and the other end of the ice-melting pipeline is communicated with the water return pipeline.

10. The heat pump unit according to claim 9, characterized in that: The heat pump unit further comprises a fifth controlled switch, a sixth controlled switch and a seventh controlled switch; The fifth controlled switch is arranged on the water supply pipeline between the heat exchanger and the driving member in the ice-melting device, wherein the driving member is arranged on the water supply pipeline between the heat exchanger and the connection position between the ice-melting pipeline and the water supply pipeline; The sixth controlled switch is arranged on the water supply pipeline located in the indoor part; The seventh controlled switch is arranged on the water return pipe located in the indoor part; Wherein, when the heat pump unit is in a power-off state, the circulating water in the heat exchange pipeline is discharged through the seventh controlled switch.

11. The heat pump unit according to claim 10, characterized in that: The fifth controlled switch, the sixth controlled switch and the seventh controlled switch are all controlled solenoid valves; Wherein, when the fifth controlled switch and the seventh controlled switch are in a power-on state, they are turned on based on a control signal, and when the fifth controlled switch and the seventh controlled switch are in a power-off state, they are automatically turned on; The sixth controlled switch is opened based on a control signal when it is in a power-on state, and is automatically closed when it is in a power-off state.

12. The heat pump unit according to any one of claims 10 or 11, characterized in that: The sixth controlled switch and the seventh controlled switch are located at the lowest point of the heat pump unit.

13. A method for controlling ice-melting of a heat pump unit, applied to the heat pump unit according to any one of claims 9 to 11, characterized in that: The method comprises: When ice formation is detected in the circulation pipeline of the heat pump unit, the heat pump unit switches to a de-icing mode; Based on the compressor in the heat pump unit, the circulating medium in the heat exchanger is heated, and when the temperature of the circulating medium is higher than a set value, the fourth controlled switch, the first controlled switch and the second controlled switch are controlled to be in an open state; Controlling the driving member to reverse at a low speed to drive the antifreeze medium in the ice-melting pipeline into the second storage member; Acquiring a liquid level value of the antifreeze medium in the second storage element; When the liquid level value is higher than the first water level value, the third controlled switch is controlled to be turned on while the first controlled switch is turned off, and then the second controlled switch is controlled to be turned off. In this state, the heated circulating medium and the ice-melting medium fill part of the circulating pipeline and the entire ice-melting pipeline; After a predetermined time, the fourth controlled switch is controlled to be closed, and it is determined whether the circulation pipeline has finished defrosting.

14. The de-icing control method of a heat pump unit according to claim 13, characterized in that: The step of judging whether the circulation pipeline has finished defrosting comprises: If the driving member stops rotating, the fourth controlled switch is controlled to be turned on, and the circulation pipeline is continued to be defrosted; If the driving member continues to rotate at a low speed, this state is maintained, and the compressor is controlled to continue heating. Then, the speed of the driving member is controlled to increase slowly until the speed of the driving member is equal to the set speed. After stably running for a set time, the driving member is controlled to stop rotating and then rotate forward, the first controlled switch and the second controlled switch are controlled to be turned on, and the third controlled switch is closed to drive the antifreeze medium from the second storage member to the thawing pipeline through the driving member, until the liquid level value of the defrosting medium in the first storage member is equal to or greater than the second water level value, the fourth controlled switch, the first controlled switch and the second controlled switch are controlled to be turned off, and the defrosting mode is ended.

15. The de-icing control method of a heat pump unit according to claim 13, characterized in that: The de-icing control method of the heat pump unit also includes: When the heat pump unit is powered off, the fifth controlled switch and the seventh controlled switch are automatically turned on, and the sixth controlled switch is automatically turned off, so as to discharge all the circulating medium in the circulating pipeline; After the heat pump unit is powered on again, the seventh controlled switch is automatically closed, and the fifth controlled switch and the sixth controlled switch are controlled to be turned on, so as to replenish the circulating medium into the circulating pipeline; After the circulation pipeline is filled with the circulation medium, the sixth controlled switch and the fifth controlled switch are controlled to be closed, and then normal operation begins.

16. An electronic device, characterized in that: include: a memory for storing one or more computer executable instructions; A processor, configured to call and execute computer executable instructions in the memory, thereby implementing the method according to any one of claims 13 to 15.

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