Ice melting device, heat pump unit and ice melting control method thereof, and electronic device

Abstract

The present application relates to heat pump unit equipment technical field, especially to a kind of ice melting device, heat pump unit and ice melting control method, electronic equipment thereof.The ice melting device includes: ice melting pipeline and storage component;Ice melting pipeline is arranged on circulating pipeline;Storage component includes first storage and second storage, and first storage is used to accommodate ice melting medium, and second storage is used to accommodate anti-freezing medium;Ice melting device has ice melting mode, when ice formation exists in circulating pipeline, ice melting device switches to ice melting mode, ice melting medium flows out from first storage and replaces anti-freezing medium in ice melting pipeline, and ice melting pipeline is used to carry out ice melting treatment to circulating pipeline;The replaced anti-freezing medium flows into second storage.In the present application, ice melting program of ice melting device can carry out timely and effective ice melting treatment to the circulating pipeline blocked by ice formation, so as to ensure the smoothness of circulating pipeline and improve the user's experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pump unit equipment, in particular to an ice melting device, a heat pump unit, an ice melting control method of the heat pump unit and electronic equipment. BACKGROUND

[0002] The heat pump unit has the advantages of energy saving, environmental protection, safe operation and the like, and more and more northern families begin to use the heat pump unit for heating in winter. 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 winter cold, the circulating pipeline on the outdoor side may be blocked due to icing of the pipeline, causing the heat pump unit to stop, and seriously affecting the user experience. SUMMARY

[0004] In view of this, the present application provides an ice melting device, a heat pump unit, an ice melting control method of the heat pump unit and electronic equipment, which solves the problem of pipeline blockage due to icing of the circulating pipeline in the heat pump unit in the prior art, and reduces the user experience.

[0005] The first aspect of the embodiment of the present application provides an ice melting device for ice melting treatment of a circulating pipeline blocked due to icing, which comprises an ice melting pipeline and a storage assembly.

[0006] The ice melting pipeline is arranged on the circulating 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 for containing ice melting medium, and the second storage member is used for containing anti-freezing medium.

[0008] The ice melting device has an ice melting mode, when there is icing in the circulating pipeline, the ice melting device switches to the ice melting mode, the ice melting medium flows out of the first storage member and replaces the anti-freezing medium in the ice melting pipeline, and the ice melting pipeline is used for ice melting treatment of the circulating pipeline; wherein the replaced anti-freezing medium flows into the second storage member.

[0009] In some embodiments, the ice melting device further comprises an anti-freezing mode.

[0010] When there is no icing in the circulating pipeline, the anti-freezing medium in the second storage member flows out and drives the ice melting medium in the ice melting pipeline to flow, so that the ice melting medium in the ice melting pipeline flows into the first storage member.

[0011] In some embodiments, the anti-icing medium is in a heated form to de-ice the icing position in the circulation pipeline.

[0012] In some embodiments, both ends of the de-icing pipeline are in communication with the circulation pipeline.

[0013] The de-icing device further comprises a driving member disposed in the de-icing pipeline or the circulation pipeline, the driving member being configured to drive the anti-icing medium to flow from the de-icing pipeline into the second storage member and to drive the de-icing medium to flow from the first storage member into the de-icing pipeline.

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

[0015] In some embodiments, a first controlled switch is disposed on a pipeline between the first storage member and the de-icing pipeline.

[0016] A second controlled switch is disposed on a pipeline between the second storage member and the de-icing pipeline, and the first storage member is in communication with the top of the second storage member.

[0017] A third controlled switch is disposed on the de-icing pipeline between the first storage member and the second storage member.

[0018] A fourth controlled switch is disposed at a connection position of the de-icing pipeline and the circulation pipeline, and the fourth controlled switch is located on the de-icing 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 electromagnetic valves.

[0020] In some embodiments, the controlled electromagnetic valve is opened based on a control signal when in an energized state, and is automatically closed when in a de-energized state.

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

[0022] The anti-icing medium at least comprises anti-icing fluid.

[0023] A second aspect of the embodiment of the present application provides a heat pump unit, the heat pump unit comprising a heat exchanger, a water supply pipeline, a return water pipeline, and the de-icing device according to the first aspect.

[0024] An outlet end of the heat exchanger is in communication with an inlet of the water supply pipeline, and an inlet end of the heat exchanger is in communication with an outlet of the return water pipeline.

[0025] The outlet of the water supply pipeline is communicated with 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 on the circulation pipeline, 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 comprises 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 a driving member in the ice melting device, wherein the driving member is arranged on the water supply pipeline between the heat exchanger and the connecting position of 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 pipeline located in the indoor part;

[0031] 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 electromagnetic valves;

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

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

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

[0036] The third aspect of the embodiment of the present application provides an ice melting control method of a heat pump unit, which is applied to the heat pump unit as described in the second aspect, and the ice melting control method comprises the following steps of:

[0037] When it is detected that ice formation occurs in the circulation pipeline in the heat pump unit, the heat pump unit is switched to an ice melting mode;

[0038] The compressor in the heat pump unit heats the circulating medium in the heat exchanger, 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] The driving member is controlled to be reversely rotated at a low speed to drive the anti-freezing medium in the ice melting pipeline into the second storage member;

[0040] The liquid level value of the anti-freezing medium in the second storage member is obtained;

[0041] When the liquid level value is higher than a first water level value, the third controlled switch is controlled to be opened while the first controlled switch is controlled to be closed, and then the second controlled switch is controlled to be closed, in this state, the heated circulating medium and the ice melting medium fill part of the circulating pipeline and the whole ice melting pipeline;

[0042] After a predetermined time, the fourth controlled switch is controlled to be closed, and it is judged whether the ice melting of the circulating pipeline is completed.

[0043] In some embodiments, the judgment whether the ice melting of the circulating pipeline is completed comprises:

[0044] If the driving member stops rotating, the fourth controlled switch is controlled to be opened, and the ice melting treatment of the circulating pipeline is continued;

[0045] If the driving member continues to rotate at a low speed, this state is maintained, the compressor continues to heat, and then the rotating speed of the driving member is continuously increased slowly until the rotating speed of the driving member is equal to a set rotating speed, after a set time of stable operation, the driving member is controlled to stop rotating and then rotate in a forward direction, the first controlled switch and the second controlled switch are controlled to be opened, and the third controlled switch is controlled to be closed, so that the anti-freezing medium is driven from the second storage member to the ice melting pipeline by the driving member, and when the liquid level value of the ice melting medium in the first storage member is equal to or greater than a second water level value, the fourth controlled switch, the first controlled switch and the second controlled switch are controlled to be closed, and the ice melting mode is ended.

[0046] In some embodiments, the ice melting control method of the heat pump unit further comprises:

[0047] When the heat pump unit is powered off, the fifth controlled switch and the seventh controlled switch are automatically opened, and the sixth controlled switch is automatically closed, so that the circulating medium in the circulating pipeline is completely discharged;

[0048] After the heat pump unit is re-powered, the seventh controlled switch is automatically closed, the fifth controlled switch and the sixth controlled switch are controlled to be opened, so that the circulating medium is supplemented into the circulating pipeline;

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

[0050] A fourth aspect of the embodiment of the application provides an electronic device, which comprises

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

[0052] a processor for invoking and executing the computer executable instructions in the memory, so as to implement the method according to the third aspect.

[0053] Compared with the prior art, the application has the following beneficial effects:

[0054] The ice melting device, the heat pump unit, the ice melting control method and the electronic device, wherein the ice melting device is used for ice melting treatment of the circulating pipeline blocked by ice, the ice melting device comprises an ice melting pipeline and a storage assembly, the ice melting pipeline is arranged on the circulating pipeline, the storage assembly comprises a first storage member and a second storage member, both of which have opening and closing functions, the first storage member stores ice melting medium, and the second storage member stores anti-freezing medium, when there is ice in the circulating pipeline, the ice melting device is switched to an ice melting mode, wherein the ice melting medium in the first storage member flows out and replaces the anti-freezing medium in the ice melting pipeline, so as to perform ice melting treatment on the circulating pipeline through the ice melting pipeline, and the anti-freezing medium in the ice melting pipeline is transported into the second storage member. Through the above technical solution, when the circulating pipeline flows smoothly, the anti-freezing medium in the ice melting pipeline can avoid icing of the ice melting device in severe weather such as cold weather, and when there is ice in the circulating pipeline, the ice melting device is switched to the ice melting mode, so that the ice melting medium can perform ice melting treatment on the ice position in the circulating pipeline, so as to ensure the smoothness of the circulating pipeline in use and improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creative labor.

[0056] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

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

[0058] Figure 2 This is a flowchart illustrating the steps of a de-icing control method for a heat pump unit according to an embodiment of the present invention.

[0059] Marker explanation:

[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. De-icing pipeline; 310. Fourth controlled switch;

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

[0064] 500. Drive components. Detailed Implementation

[0065] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “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 merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0068] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0069] The 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 intended 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 a de-icing device for de-icing a circulation pipe 200 that is blocked by ice. The de-icing device includes a de-icing pipe 300 and a storage component 400.

[0071] The circulation pipe 200 can be used in the heat pump unit 100, which includes a heat exchanger 110, a water supply pipe 210, and a return water pipe 220. The heat exchanger 110 may include, but is not limited to, a water-refrigerant heat exchanger. The inlet end of the water supply pipe 210 is connected to the outlet end of the heat exchanger 110, and the outlet end of the water supply pipe 210 is connected to the return end of the return water pipe 220. It should be noted that the water supply pipe 210 located indoors is equipped with branch pipes (not shown in the figure), which have several outlets, allowing indoor users to obtain hot water from the water supply pipe 210 through any outlet. Simultaneously, the branch pipes can also be used for indoor heating.

[0072] The outlet of the return water pipe 220 is connected to the inlet 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 supply water pipe 210.

[0073] It should be noted that the water supply pipe 210 and the return pipe 220 form a circulation pipe 200. The section of the circulation pipe 200 located indoors can be used for indoor heating or to provide hot water to users.

[0074] The de-icing pipe 300 is wound around the circulation pipe 200 in a coiled manner. Specifically, the de-icing pipe 300 is wound around the circulation pipe 200 located in the outdoor section, or the de-icing pipe 300 can also be wound around the circulation pipe 200 in the outdoor section and the circulation pipe 200 in the indoor section that is prone to freezing.

[0075] In this projection, using a plane parallel to the horizontal plane as the projection plane, the distance between two adjacent de-icing pipes 300 located above the central axis of the circulation pipe 200 is 0.5 to 3 times the diameter of the de-icing pipe 300, to ensure the efficiency of the de-icing process performed by the de-icing pipe 300. It should be noted that the central axis of the circulation pipe 200 is parallel to the projection plane.

[0076] The storage component 400 includes a first storage element 410 and a second storage element 420. Both the first storage element 410 and the second storage element 420 have opening and closing functions, such as control valves installed at the outlet positions of the first storage element 410 and the second storage element 420. The first storage element 410 is used to contain the de-icing medium, while the second storage element 420 is used to store the antifreeze medium.

[0077] In one example, the de-icing medium includes, but is not limited to, circulating water, while the antifreeze medium includes, but is not limited to, antifreeze.

[0078] The de-icing device has a de-icing mode. When the control system of the heat pump unit 100 determines that there is ice in the circulation pipe 200, the control system controls the de-icing device to switch to the de-icing mode. At this time, the de-icing medium can be extracted from the first storage unit 410 and transported to the de-icing pipe 300 through a driving structure such as a circulation pump, so as to replace the original antifreeze medium in the de-icing pipe 300. That is, the antifreeze medium in the de-icing pipe 300 is transported to the second storage unit 420, so that the de-icing pipe 300 is filled with de-icing medium, thereby using the de-icing medium to de-ic the ice in the circulation pipe 200.

[0079] It should be noted that the control system of the heat pump unit 100 can adopt the control system in the existing technology, as long as the control system can control the various start-up functions of the heat pump unit 100. The specific structure and control logic of the control system will not be described in detail here.

[0080] In some embodiments, a circulation pump can be installed in the de-icing pipeline 300, and an electric heating element can be installed in the first storage unit 410. The electric heating element is used to quickly heat the circulating water in the first storage unit 410. Then, driven by the circulation pump, the antifreeze medium in the de-icing pipeline 300 is transported to the second storage unit 420, and the heated circulating water is transported to the de-icing pipeline 300. The heated circulating water is used to de-ic the frozen areas in the circulation pipeline 200 to ensure the smooth flow of the circulation pipeline 200.

[0081] In this embodiment, when the circulation pipe 200 flows smoothly, the antifreeze medium in the de-icing pipe 300 can prevent the de-icing device from freezing in severe weather conditions such as extreme cold. When there is ice inside the circulation pipe 200, the de-icing device switches to de-icing mode to use the de-icing medium to de-ic the iced areas in the circulation pipe 200, thereby ensuring the smooth flow of the circulation pipe 200 during use and improving the user experience.

[0082] like Figure 1 As shown, in some embodiments, the de-icing 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 pipe 200, or after the de-icing device has de-iced the iced areas in the circulation pipe 200 and the circulation pipe 200 is unobstructed, the circulation pump on the de-icing pipe 300 extracts the antifreeze medium from the second storage unit 420 and delivers it to the de-icing pipe 300. At the same time, under the action of the circulation pump, the antifreeze medium drives the de-icing medium in the de-icing pipe 300 to flow, pushing the de-icing medium in the de-icing pipe 300 into the first storage unit 410.

[0083] In other words, under normal conditions, or when the de-icing device switches from de-icing mode to antifreeze mode, the de-icing pipeline 300 is filled with antifreeze medium. This antifreeze medium prevents the de-icing pipeline 300 from freezing inside in severe weather conditions, thus ensuring the unobstructed flow of the de-icing pipeline 300 during the next de-icing process.

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

[0085] In one example, the circulation pipe 200 is used in the heat pump unit 100, which is equipped with a water-fluorine heat exchanger. Therefore, the water-fluorine heat exchanger can be used to heat the de-icing medium in the first storage unit 410. Then, the heated de-icing medium is transported to the de-icing pipe 300 by the circulation pump. Finally, the de-icing medium exchanges heat with the ice at the freezing point in the circulation pipe 200 to remove the ice at the freezing point in the circulation pipe 200, thereby ensuring the smooth flow of the circulation pipe 200.

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

[0087] The de-icing device also includes a drive unit 500. The drive unit 500 is disposed on the de-icing pipeline 300, or the drive unit 500 is disposed on the circulation pipeline 200.

[0088] In one specific example, the drive unit 500 may include, but is not limited to, a circulating water pump with forward and reverse rotation capabilities. The circulating water pump is installed on the return water line 220 of the circulating line 200, and near the connection between the return water line 220 and the de-icing line 300. Specifically, the circulating water pump is installed on the return water line 220 between the de-icing line 300 and the water-fluoride heat exchanger.

[0089] The driving component 500, i.e., the circulating water pump, is configured to, in the de-icing mode, drive the antifreeze medium to flow from the de-icing pipe 300 to the second storage unit 420, and drive the de-icing medium to flow from the first storage unit 410 to the de-icing pipe 300; and, in the antifreeze mode, drive the antifreeze medium to flow out of the second storage unit 420 and into the de-icing pipe 300, while simultaneously transporting the de-icing medium in the de-icing pipe 300 to the first storage unit 410.

[0090] In other words, when there is no ice in the circulation pipe 200, the de-icing pipe 300 is filled with antifreeze. When the control system of the heat pump unit 100 determines that there is ice in the circulation pipe 200, the drive component 500 fills the de-icing pipe 300 with heated circulating water. The circulating water can be heated by a water-fluorine heat exchanger, and then the heated circulating water is used to de-ice the ice in the circulation pipe 200.

[0091] like Figure 1As shown, in some embodiments, a first controlled switch 411 is provided on the pipeline between the first storage unit 410 and the de-icing pipeline 300. This first controlled switch 411 is a controlled solenoid valve, which is opened based on a control signal when energized and automatically closed when de-energized. That is, the first controlled switch 411 is normally closed when energized, and only opens when an opening command is issued to it by the control system. At this time, the de-icing medium can be extracted from the first storage unit 410 and transported to the de-icing pipeline 300 via the drive unit 500.

[0092] A second controlled switch 421 is installed on the pipeline between the second storage unit 420 and the de-icing pipeline 300. This second controlled switch 421 is a controlled solenoid valve, which is opened based on a control signal when energized and automatically closed when de-energized. That is, the second controlled switch 421 is normally closed when energized, and only opens when an opening command is issued to the second controlled switch 421 by the control system. At this time, the antifreeze medium can be extracted from the second storage unit 420 and delivered to the de-icing pipeline 300 by the drive unit 500.

[0093] To improve the sealing performance of the first storage unit 410 and the second storage unit 420, and to ensure that the de-icing medium and antifreeze medium inside are not contaminated by external impurities, the tops of the first storage unit 410 and the second storage unit 420 are connected. It should be noted that when the de-icing pipe 300 is filled with antifreeze medium, the highest water level of the de-icing medium in the first storage unit 410 must be lower than its top position, meaning that the de-icing medium will not flow from the first storage unit 410 into the second storage unit 420. Similarly, when the de-icing pipe 300 is filled with de-icing medium, the highest water level of the antifreeze medium in the second storage unit 420 must also be lower than its top position, meaning that the antifreeze medium will not flow from the second storage unit 420 into the first storage unit 410.

[0094] A third controlled switch 430 is provided on the de-icing pipeline 300 between the first storage unit 410 and the second storage unit 420. This third controlled switch 430 is a controlled solenoid valve, which is opened based on a control signal when energized and automatically closed when de-energized. In other words, the third controlled switch 430 is normally closed when energized.

[0095] A fourth controlled switch 310 is installed at the connection point between the de-icing pipeline 300 and the circulation pipeline 200. This fourth controlled switch 310 is a controlled solenoid valve, which is opened based on a control signal when energized and automatically closed when de-energized. In other words, the fourth controlled switch 310 is normally closed when energized.

[0096] In the example above, when the control system detects that ice has formed at a certain location in the circulation pipeline 200, the control system switches the de-icing device from anti-freeze mode to de-icing mode.

[0097] At this time, the compressor in the water-fluorine heat exchanger heats the water in the heat exchange tubes. 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 component 500, i.e., the circulating water pump, reverses at low speed, pushing the antifreeze medium in the de-icing pipeline 300 into the second storage unit 420. When the liquid level in the second storage unit 420 is higher than the first water level value, it indicates that the de-icing pipeline 300 is full of hot water. The first water level value can be detected by a water level sensor or other detection device installed inside the second storage unit 420.

[0099] When the liquid level in the second storage device 420 is higher than the first water level, the control system controls the third controlled switch 430 to open and the first controlled switch 411 to close. Then, the second controlled switch 421 is closed to ensure that all positions in the entire de-icing pipeline 300 are always filled with hot water. Finally, the hot water is used to de-ic the frozen positions in the circulation pipeline 200.

[0100] After running for a period of time, turn off the fourth controlled switch 310. If the drive unit 500, i.e., the circulating water pump, stops due to pipe blockage, it indicates that the ice-covered area in the circulating pipe 200 is not yet open. Then, control and turn on the fourth controlled switch 310 to continue the de-icing process. If the drive unit 500 can rotate at a low speed at this time, it indicates that the ice-covered area in the circulating pipe 200 has been opened. Maintain this state, control the compressor to continue working to heat, and slowly increase the speed of the drive unit 500 until the speed of the drive unit 500 reaches its maximum. After running stably for a period of time, the de-icing process will be completed.

[0101] Finally, after the drive unit 500 stops rotating, it starts rotating 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 drawn from the second storage unit 420 through the drive unit 500 and pushed into the de-icing pipeline 300. When the liquid level of the de-icing medium in the first storage unit 410 is higher than the second water level value, it indicates that the de-icing pipeline 300 is full of 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 de-icing mode is exited.

[0102] The second water level value can be determined by a detection device such as a water level sensor installed inside the first storage device 410.

[0103] It should be noted that when the defrosting mode is activated or deactivated, a small amount of antifreeze (i.e., antifreeze) will enter the circulation pipe 200, but this portion of antifreeze will not affect the wet cooling effect of the circulation pipe 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 line 210, and a return line 220. The heat exchanger 110 may include, but is not limited to, a water-fluoride heat exchanger.

[0105] The outlet of heat exchanger 110 is connected to the inlet of water supply pipe 210, and the inlet of heat exchanger 110 is connected to the outlet of return water pipe 220. The outlet of water supply pipe 210 and the inlet of return water pipe 220 are connected to form a heat exchange pipe. The heat exchange pipe located outdoors forms a circulation pipe 200.

[0106] It should be noted that the water supply pipe 210 located indoors is equipped with branch pipes (not shown in the figure), and several outlets are provided on the branch pipes so that indoor users can obtain hot water from the water supply pipe 210 through any outlet. At the same time, the branch pipes can also be used for indoor heating.

[0107] The de-icing pipe 300 in the de-icing device is wound around the circulation pipe 200, and one end of the de-icing pipe 300 is connected to the water supply pipe 210, and the other end of the de-icing pipe 300 is connected to the return water pipe 220.

[0108] Similarly, the storage component 400 in the de-icing device includes a first storage component 410 and a second storage component 420, and the drive component 500 in the de-icing device is disposed on the return water pipe 220 between the de-icing pipe 300 and the water-fluoride heat exchanger.

[0109] A first controlled switch 411 is installed on the pipeline between the first storage unit 410 and the de-icing pipeline 300. A second controlled switch 421 is installed on the pipeline between the second storage unit 420 and the de-icing pipeline 300. A third controlled switch 430 is installed on the de-icing pipeline 300 between the first storage unit 410 and the second storage unit 420. A fourth controlled switch 310 is installed at the connection point between the de-icing 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 solenoid valves. When energized, the controlled solenoid valves are opened based on a control signal; and when de-energized, they automatically close. In other words, when energized, the first controlled switch 411, the second controlled switch 421, the third controlled switch 430, and the fourth controlled switch 310 are all normally closed.

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

[0112] The fifth controlled switch 120 is installed on the water supply pipe 210 between the heat exchanger 110 and the drive unit 500 in the de-icing device. The drive unit 500 is installed on the water supply pipe 210 between the heat exchanger 110 and the connection point between the de-icing pipe 300 and the water supply pipe 210.

[0113] The sixth controlled switch 130 is installed on the water supply pipe 210 located in the indoor section. The seventh controlled switch 140 is installed on the return water pipe 220 located in the indoor section. When the heat pump unit 100 is in a power-off state, the circulating water in the heat exchange pipe is discharged through the seventh controlled switch 140. That is to say, when the heat pump unit 100 is in a power-off state, in order to prevent the antifreeze protection function of the entire heat pump unit 100 from failing, the seventh controlled switch 140 is used to discharge all the circulating water in the heat exchange pipe, thereby achieving the purpose of antifreeze.

[0114] In one example, the sixth controlled switch 130 and the seventh controlled switch 140 are both located 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 by gravity through the seventh controlled switch 140.

[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. Specifically, the fifth controlled switch 120 and the seventh controlled switch 140 are opened based on a control signal when they are energized, and automatically opened when they are de-energized. The sixth controlled switch 130 is opened based on a control signal when it is energized, and automatically closed when it is de-energized.

[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 discharged from the heat exchange pipeline quickly.

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

[0118] When the heat pump unit 100 is powered on, the control system closes the seventh controlled switch 140 and then opens the sixth controlled switch 130 to inject water into the water supply pipeline 210. To ensure smooth water injection, the control system keeps the fifth controlled switch 120 open. Once the entire heat exchange pipeline is full of water, the control system closes both the sixth and fifth controlled switches.

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

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

[0121] Step S100: When icing is detected in the circulation pipes of the heat pump unit, the heat pump unit switches to de-icing mode.

[0122] Step S200: The compressor in the heat pump unit heats the circulating medium in the heat exchanger. When the temperature of the circulating medium is higher than the set value, the fourth controlled switch, the first controlled switch and the second controlled switch are controlled to be in the open state.

[0123] Step S300: Control the drive unit to reverse at low speed to drive the antifreeze medium in the de-icing pipeline into the second storage unit.

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

[0125] Step S500: When the liquid level is higher than the first water level, the third controlled switch is opened while the first controlled switch is closed. Then, the second controlled switch is closed. In this state, the heated circulating medium and the de-icing medium fill part of the circulating pipeline and the entire de-icing pipeline.

[0126] Step S600: After the predetermined time, control the fourth controlled switch to close and determine whether the de-icing of the circulation pipeline has ended.

[0127] In step S100, after the control system of the heat pump unit 100 determines that icing has occurred in the circulation pipe 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 operate and heat 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 open. At this time, the third controlled switch 430 is in the closed state.

[0129] In one example, the set value can be any value between 50°C and 90°C. The set value can be flexibly set according to the different environmental locations or altitudes of the heat pump unit 100, and no specific limitation is made here.

[0130] In step S300, the control system controls the drive unit 500 to reverse at a low speed to push the antifreeze medium in the de-icing pipeline 300 into the second storage unit 420, while simultaneously filling the de-icing pipeline 300 with heated circulating water. When the drive unit 500 is equipped with high, medium, and low speed settings, it can be controlled to reverse at the low speed.

[0131] In step S400, the liquid level value of the antifreeze medium inside the second storage unit 420 is obtained by a water level sensor or other detection device installed inside the second storage unit 420.

[0132] In step S500, when the liquid level is higher than the first water level, the control system controls the third controlled switch 430 to open while simultaneously closing the first controlled switch 411, and then controls the second controlled switch 421 to close. This state indicates that the heated circulating water and de-icing medium have filled part of the circulating pipe 200 and the entire de-icing pipe 300. The first water level can be any value between 60% and 80% of the height in the second storage container 420.

[0133] In step S400, after a predetermined time, the control system controls the fourth controlled switch 310 to close, and determines whether the de-icing of the circulation pipeline 200 is complete. The predetermined time can be flexibly set according to the environmental location or altitude of the heat pump unit 100, and is not specifically limited here.

[0134] In one example, if the drive unit 500, i.e., the circulating water pump, stops due to pipe blockage, it indicates that the ice-covered area in the circulating pipe 200 is not yet open. Then, the fourth controlled switch 310 is activated to continue the de-icing process. If the drive unit 500 can rotate at a low speed at this time, it indicates that the ice-covered area in the circulating pipe 200 has been opened. Maintaining this state, the compressor continues to operate for heating, and the speed of the drive unit 500 slowly increases until it reaches its maximum. After a period of stable operation, the de-icing process is complete.

[0135] Finally, after the drive unit 500 stops rotating, it begins 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 drawn from the second storage unit 420 and pushed into the de-icing pipeline 300 via the drive unit 500. When the level of the de-icing medium in the first storage unit 410 is higher than the second water level value, it indicates that the de-icing pipeline 300 is full of 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, exiting the de-icing mode. The second water level value can be any value between 60% and 80% of the height in the first storage unit 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, thereby discharging all the circulating medium, such as circulating water, in the circulation pipeline 200 through the seventh controlled switch 140.

[0137] After the heat pump unit 100 is powered on again, the seventh controlled switch 140 automatically closes, while the fifth controlled switch 120 remains open, 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] Once the circulating medium in the circulation pipeline 200 is fully replenished, the sixth controlled switch 130 and the fifth controlled switch 120 are closed, and normal operation begins.

[0139] In this example, when the heat pump unit 100 is in a power-off state, all the controlled solenoid valves lose control. In order to prevent the anti-freeze protection function of the entire heat pump unit 100 from failing, the seventh controlled switch 140 is used to drain all the circulating water in the heat exchange pipeline, thereby achieving the purpose of anti-freeze, 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 including a processor (not shown) and a memory (not shown) connected to the processor. The memory is used to store one or more computer-executable instructions. These computer-executable instructions can be invoked by the processor to execute the de-icing control method of the heat pump unit in any of the above embodiments.

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

[0142] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A de-icing device for de-icing circulating pipelines blocked by ice, characterized in that, The de-icing device includes: de-icing pipelines and a storage component; The de-icing pipeline is routed around the circulation pipeline; The storage component includes a first storage unit and a second storage unit, both of which have opening and closing functions. The first storage unit is used to contain the de-icing medium, and the second storage unit is used to contain the antifreeze medium. The de-icing device has a de-icing mode. When there is ice in the circulation pipeline, the de-icing device switches to the de-icing mode. The de-icing medium flows out from the first storage device and replaces the antifreeze medium in the de-icing pipeline, and the circulation pipeline is de-iced through the de-icing pipeline. The replaced antifreeze medium flows into the second storage device.

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

3. The de-icing device according to claim 1, characterized in that, The de-icing medium is heated to de-ice the frozen areas in the circulation pipeline.

4. The de-icing device according to claim 1, characterized in that, Both ends of the de-icing pipeline are connected to the circulation pipeline; The de-icing device further includes a driving component disposed in the de-icing pipeline or the circulation pipeline. The driving component is configured to drive the antifreeze medium to flow from the de-icing pipeline to the second storage container, and to drive the de-icing medium to flow from the first storage container to the de-icing pipeline.

5. The de-icing device according to claim 4, characterized in that, The driving component includes at least a circulating water pump with forward and reverse rotation functions.

6. The de-icing device according to claim 4, characterized in that, A first controlled switch is installed on the pipeline between the first storage device and the de-icing pipeline; A second controlled switch is provided on the pipeline between the second storage unit and the de-icing pipeline, and the tops of the first storage unit and the second storage unit are connected; A third controlled switch is provided on the de-icing pipeline between the first storage unit and the second storage unit; A fourth controlled switch is provided at the connection point between the de-icing pipeline and the circulation pipeline, and the fourth controlled switch is located on the de-icing pipeline.

7. The de-icing 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; The controlled solenoid valve is opened based on a control signal when energized; and it automatically closes when de-energized.

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

9. A heat pump unit, characterized in that, The heat pump unit includes a heat exchanger, a water supply pipeline, a water return pipeline, and an ice-melting device as described in any one of claims 1 to 8; The outlet end of the heat exchanger is connected to the inlet of the water supply pipeline, and the inlet end of the heat exchanger is connected to the outlet of the return water pipeline. The outlet of the water supply pipeline is connected to the inlet of the return water pipeline to form a heat exchange pipeline, wherein the heat exchange pipeline located outdoors forms a circulation pipeline. The de-icing device has a de-icing pipe that is wound around the circulation pipe, with one end of the de-icing pipe connected to the water supply pipe and the other end connected to the return water pipe.

10. The heat pump unit according to claim 9, characterized in that, The heat pump unit also includes a fifth controlled switch, a sixth controlled switch, and a seventh controlled switch; The fifth controlled switch is disposed on the water supply pipeline between the heat exchanger and the driving component in the de-icing device, wherein the driving component is disposed on the water supply pipeline between the heat exchanger and the connection position of the de-icing pipeline and the water supply pipeline; The sixth controlled switch is installed on the water supply pipe located in the indoor section; The seventh controlled switch is installed on the return water pipe located in the indoor section; 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, sixth, and seventh controlled switches are all controlled solenoid valves; Specifically, the fifth controlled switch and the seventh controlled switch are turned on based on a control signal when they are in a powered-on state, and are automatically turned on when they are in a powered-off state; When the sixth controlled switch is in the energized state, it is turned on based on a control signal; and when the sixth controlled switch is in the de-energized state, it is automatically turned off.

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

13. A de-icing control method for a heat pump unit, applied to the heat pump unit as described in any one of claims 9 to 11, characterized in that, The method includes: When icing is detected in the circulation pipes of the heat pump unit, the heat pump unit switches to de-icing mode. The compressor in the heat pump unit heats the circulating medium in the heat exchanger. When the temperature of the circulating medium is higher than the set value, the fourth controlled switch, the first controlled switch and the second controlled switch are controlled to be in the open state. The control drive reverses at low speed to drive the antifreeze medium in the de-icing pipeline into the second storage unit; Obtain the liquid level value of the antifreeze medium in the second storage device; When the liquid level is higher than the first water level, the third controlled switch is opened while the first controlled switch is closed. Then, the second controlled switch is closed. In this state, the heated circulating medium and the de-icing medium fill part of the circulating pipeline and the entire de-icing pipeline. After the predetermined time, the fourth controlled switch is closed, and it is determined whether the de-icing of the circulation pipeline has ended.

14. The de-icing control method for a heat pump unit according to claim 13, characterized in that, The determination of whether the de-icing of the circulation pipeline has ended includes: If the drive component stops rotating, the fourth controlled switch is turned on, and the de-icing process of the circulation pipeline continues. If the drive unit continues to rotate at a low speed, maintain this state, and control the compressor to continue heating, then control the speed of the drive unit to increase slowly until the speed of the drive unit equals the set speed. After stabilizing for a set time, control the drive unit to stop rotating and then rotate in the forward direction. Control the first and second controlled switches to open and the third controlled switch to close, so that the antifreeze medium is driven from the second storage unit to the defrosting pipeline through the drive unit until the liquid level of the defrosting medium in the first storage unit is equal to or greater than the second water level. Then control the fourth controlled switch, the first controlled switch, and the second controlled switch to close, ending the defrosting mode.

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

16. An electronic device, characterized in that, include: Memory is used to store one or more computer-executable instructions; A processor for invoking and executing computer-executable instructions in the memory to implement the method as claimed in any one of claims 13 to 15.

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