Air source heat pump

Abstract

The embodiment of the invention provides an air source heat pump, belongs to the technical field of heat pumps, and aims to solve the technical problems of frequent defrosting and increased heat loss caused by the fact that defrosting water is randomly discharged to increase air humidity in the prior art. The air source heat pump comprises a compressor; a plurality of heat exchangers; the water pan is correspondingly arranged at the bottom of the heat exchanger; the defrosting water collecting assembly comprises a water box, and the water box is communicated with the water receiving disc; the water box is configured in the mode that when the volume of the defrosting water in the water box is larger than the water pumping volume, the water box can discharge at least part of the defrosting water. And the defrosting water storage part is communicated with the water outlet end of the water box. According to the air source heat pump, the defrosting water received by the water receiving disc can be collected and stored to avoid freezing, and the problems that the environment humidity is increased and equipment frosting is accelerated due to the fact that the defrosting water is discharged at will are solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of heat pumps, and in particular to an air source heat pump. Background Art

[0002] In the application of air source heat pump heating technology, the heat pump unit will frost in a low temperature environment, affecting the heating efficiency, so defrosting operation is required. During the defrosting process, the heat pump unit will produce a large amount of defrosting water. The random discharge of this defrosting water in the station will increase the air humidity, prompting the unit to defrost frequently, resulting in increased heat loss. Summary of the invention

[0003] The embodiments of the present application provide an air source heat pump, which can solve the technical problems that defrost water freezes at low temperatures, affecting heating efficiency, and that random discharge increases air humidity, leading to frequent defrosting and increased heat loss.

[0004] In a first aspect, an embodiment of the present application provides an air source heat pump, comprising:

[0005] compressor;

[0006] A plurality of heat exchangers are connected to the compressor, at least some of the heat exchangers can absorb heat through the refrigerant from the compressor; at least some of the heat exchangers can release heat through the refrigerant from the compressor;

[0007] A water receiving tray, the water receiving tray is correspondingly arranged at the bottom of the heat exchanger, and the water receiving tray is used to receive defrost water on the surface of the heat exchanger;

[0008] The defrost water collection component includes:

[0009] a water box, the water box being in communication with the water receiving tray, the water box being used to receive and store the defrost water received by the water receiving tray; the water box being configured such that when the volume of the defrost water in the water box is greater than the pumping volume, the water box can discharge at least part of the defrost water;

[0010] A defrost water storage component is communicated with the water outlet end of the water box.

[0011] The air source heat pump of the embodiment of the present application can effectively collect and process defrost water, avoiding the problem of defrost water being discharged randomly around the equipment, leading to ice formation and increased ambient humidity, thereby helping to improve the operating efficiency and reliability of the heat pump, extend the service life of the equipment, and reduce energy consumption.

[0012] The compressor can compress the refrigerant gas into high-temperature and high-pressure gas, so that the air source heat pump can absorb and release heat in different heat exchangers, thereby achieving the function of heating or cooling. The heat exchanger is used for heat exchange between the refrigerant and the air.

[0013] Part of the heat exchanger is used to absorb heat, and part of the heat exchanger is used to release heat, which enables the air source heat pump to flexibly switch between heating and defrosting modes. In heating mode, the refrigerant releases heat in the heat exchanger to heat the room; in defrosting mode, the refrigerant absorbs heat in the heat exchanger to melt the frost layer.

[0014] The water receiving tray is arranged at the bottom of the heat exchanger, and the defrost water on the surface of the heat exchanger can drip into the water receiving tray, thereby realizing the effective collection of the defrost water and preventing the defrost water from dripping onto the ground.

[0015] The water box is connected to the water tray, which can collect the defrost water received by the water tray in time to prevent the defrost water from staying in the water tray or the bottom of the fin heat exchanger for a long time and causing ice. The defrost water in the water box is discharged when the water volume reaches a certain level, which can avoid overflow of the water box and accumulation of defrost water around the equipment.

[0016] The defrost water storage component can centrally store the defrost water discharged from the water box, thereby avoiding the problems of increased ambient humidity and accelerated frosting of equipment caused by random discharge of defrost water.

[0017] In some embodiments of the present application, the defrost water collecting assembly further includes:

[0018] a first water pump, wherein a water inlet of the first water pump is communicated with the water box, and a water outlet of the first water pump is communicated with the defrost water storage component;

[0019] A liquid level sensor, the liquid level sensor is at least used to obtain the volume of defrost water in the water box, and the liquid level sensor can be electrically connected to the control device to control the first water pump through the control device.

[0020] With this arrangement, the first water pump can actively pump water out of the water box and transport it to the defrost water storage member when the defrost water reaches a certain liquid level. This design avoids the risk of defrost water overflowing due to excessive accumulation in the water box, while ensuring centralized processing of the defrost water.

[0021] The liquid level sensor can monitor the water level in the water box in real time. When the water level reaches the preset value, the liquid level sensor sends a signal to the control device to trigger the start of the first water pump, thereby realizing the automated water transfer process and improving the operating efficiency and reliability of the system.

[0022] In some embodiments of the present application, there are multiple liquid level sensors, and the multiple liquid level sensors include:

[0023] A first liquid level sensor is disposed at a first position of the water box, and the first liquid level sensor is configured such that when the volume of defrost water in the water box is greater than the pumping volume, the first liquid level sensor sends a first signal to the control device, and the control device controls the first water pump to pump water from the water box;

[0024] The second liquid level sensor is arranged at a second position of the water box, and the height of the second position is lower than the height of the first position. The second liquid level sensor is configured as follows: when the volume of defrost water in the water box is lower than the stop volume, the second liquid level sensor sends a second signal to the control device, and the control device controls the first water pump to stop pumping water from the water box.

[0025] By setting the first liquid level sensor, it can be ensured that the first signal is sent in time when the water volume reaches a certain height, so that the first water pump can pump water to prevent the water in the water box from overflowing. By setting the second liquid level sensor, it can be ensured that the second signal is sent in time when the water volume drops to a safe level, so that the first water pump stops pumping water to prevent the first water pump from running idle. Such a setting helps to accurately monitor and manage the defrost water level in the water box, ensure the timely treatment of defrost water and the safe operation of the equipment, and improve the reliability and energy efficiency of the air source heat pump.

[0026] In some embodiments of the present application, the ratio of the pumping volume to the stop volume is 2-4.

[0027] By setting the ratio of the pumping volume to the stop volume to 2-4, when the amount of water in the water box reaches 2 to 4 times the stop volume, the first water pump starts pumping water.

[0028] With this arrangement, the first water pump can start pumping water when the defrost water in the water box reaches a certain amount, and stop pumping water when the water volume decreases to a certain level. This ratio design ensures that the operation cycle of the first water pump is moderate, avoiding energy consumption and equipment wear caused by frequent startup and shutdown, while preventing the risk of overflow of the water box, and improving the operating efficiency and reliability of the system.

[0029] In some embodiments of the present application, the water receiving tray is provided with a collection tube, a water inlet end of the collection tube is connected to the water receiving tray, and a water outlet end of the collection tube is connected to the water box.

[0030] The water inlet of the collection pipe is connected to the water receiving tray, so that the defrost water can flow directly from the water receiving tray into the collection pipe. The water outlet is connected to the water box to ensure that the defrost water can smoothly enter the water box for storage. By setting up the collection pipe, the defrost water can be quickly discharged from the water receiving tray to prevent excessive water accumulation in the water receiving tray, thereby avoiding overflow or freezing caused by water accumulation. This arrangement improves the efficiency of defrost water treatment and ensures the normal operation of the equipment and environmental safety.

[0031] In some embodiments of the present application, the water receiving tray is provided with a first heating element, and the first heating element is used to defrost the water receiving tray;

[0032] And / or, a second heating element is provided in the collection tube, and the second heating element is used for defrosting the collection tube.

[0033] In low temperature environments, the defrosted water in the water tray and collection pipe may refreeze, resulting in poor water flow.

[0034] By setting the first heating element, the water receiving tray can be heated to prevent the defrosted water from freezing in the water receiving tray, ensuring that the defrosted water in the water receiving tray can flow smoothly into the collection pipe to avoid blockage caused by freezing. By setting the second heating element, the collection pipe can be heated to keep its internal temperature above the freezing point, thereby preventing the defrosted water from freezing.

[0035] Such a setting can effectively prevent the defrost water from freezing in key parts such as the water receiving tray and the collection pipe, ensuring that the defrost water can flow smoothly from the water receiving tray into the collection pipe and finally be transported to the water box, thereby improving the operating reliability of the system, preventing blockages and failures caused by ice, and ensuring the high efficiency of defrost water treatment and the stable operation of the system.

[0036] In some embodiments of the present application, the defrost water collecting assembly further includes:

[0037] A second water pump, wherein a water inlet of the second water pump is communicated with the defrost water storage component, and a water outlet of the second water pump is communicated with a water circulation pipeline.

[0038] With such an arrangement, the water stored in the defrost water storage element can be transported to the water circulation pipeline to achieve effective reuse of the defrost water, which not only reduces dependence on external water sources, but also can reduce operating costs to a certain extent and improve the energy efficiency of the overall system.

[0039] In a second aspect, an embodiment of the present application provides an air source heat pump, comprising:

[0040] compressor;

[0041] A plurality of heat exchangers are connected to the compressor, at least some of the heat exchangers can absorb heat through the refrigerant from the compressor; at least some of the heat exchangers can release heat through the refrigerant from the compressor;

[0042] A water receiving tray, the water receiving tray is correspondingly arranged at the bottom of the heat exchanger, and the water receiving tray is used to receive defrost water on the surface of the heat exchanger;

[0043] The defrost water collection component includes:

[0044] A water box, the water box is connected with the defrost water collecting component and the water receiving tray, and the water box defrost water collecting component is used to collect, receive and store the defrost water received by the water receiving tray;

[0045] A defrost water storage component, wherein a water inlet end of the defrost water storage component is connected to a water outlet end of the water box of the defrost water collecting assembly;

[0046] a first water pump, wherein a water inlet of the first water pump is communicated with the water box, and a water outlet of the first water pump is communicated with the defrost water storage component;

[0047] A control device, wherein the control device is configured as follows:

[0048] Controlling the heat exchanger to be in a defrosting mode, so that defrosting water is formed on the surface of the heat exchanger;

[0049] Obtaining defrost water from the heat exchanger through the water receiving tray, and allowing the defrost water to flow into the water box through the water receiving tray;

[0050] Obtaining the current volume of the defrost water in the water box;

[0051] If the current volume of the defrost water is greater than or equal to the preset volume, the first water pump is controlled to pump water from the water box and discharge the defrost water to the defrost water storage component.

[0052] The air source heat pump of the embodiment of the present application can effectively collect and process defrost water, avoiding the problem of defrost water being discharged around the equipment at will, causing ice formation and increased ambient humidity, thereby helping to improve the operating efficiency and reliability of the heat pump, extend the service life of the equipment, and reduce energy consumption.

[0053] The water box is connected to the water receiving tray, and can collect the defrost water received by the water receiving tray in time to prevent the defrost water from staying in the water receiving tray or the bottom of the fin heat exchanger for a long time and causing ice. By setting a first water pump, when the defrost water reaches a certain liquid level, water can be actively pumped out of the water box and transported to the defrost water storage component.

[0054] This design avoids the risk of defrost water accumulating too much in the water box and causing overflow and the risk of defrost water accumulating around the device, while ensuring the centralized treatment of the defrost water.

[0055] The defrost water storage component can centrally store the defrost water discharged from the water box, thereby avoiding the problems of increased ambient humidity and accelerated frosting of equipment caused by random discharge of defrost water.

[0056] In some embodiments of the present application, including:

[0057] A first heating element, disposed on the water receiving tray and used to defrost the water receiving tray;

[0058] a second heating element, which is arranged on the collection pipe of the water receiving tray and is used to defrost the collection pipe, wherein the water inlet end of the collection pipe is connected to the water receiving tray, and the water outlet end of the collection pipe is connected to the water box;

[0059] The control device is configured as follows:

[0060] Obtaining the ambient temperature and humidity of the air source heat pump;

[0061] When the ambient temperature is greater than or equal to 0°C, the first heating element and the second heating element are controlled to be turned off;

[0062] When the ambient temperature is greater than or equal to -8°C and less than 0°C, and the ambient humidity is less than or equal to 70%, the heat exchanger is controlled to be in defrosting mode, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube;

[0063] When the defrost mode starts to be turned off, keeping the first heating element and the second heating element in an on state;

[0064] When the defrost mode is in the off state for a time period greater than a first set time period, controlling the first heating element and the second heating element to be off;

[0065] When the ambient temperature is greater than or equal to -8°C and less than 0°C, and the ambient humidity is greater than 70% and less than or equal to 90%, the compressor and the heat exchanger are controlled to operate, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube;

[0066] When one of the compressors starts to shut down, keeping the first heating element and the second heating element in an on state;

[0067] When the compressor is in the off state for a time period greater than a first set time period, controlling the first heating element and the second heating element corresponding to the heat exchanger connected to the compressor to be turned off;

[0068] When the ambient temperature is less than -8°C and the ambient humidity is less than or equal to 70%, the heat exchanger is controlled to be in defrosting mode, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube;

[0069] When the defrost mode starts to be turned off, keeping the first heating element and the second heating element in an on state;

[0070] When the defrost mode is in the off state for a time period greater than a second set time period, controlling the first heating element and the second heating element to be off;

[0071] When the ambient temperature is less than -8°C and the ambient humidity is greater than 70% and less than or equal to 90%, the compressor and the heat exchanger are controlled to operate, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube;

[0072] When one of the compressors starts to shut down, keeping the first heating element and the second heating element in an on state;

[0073] When the compressor is in the off state for a time period greater than a second set time period, controlling the first heating element and the second heating element corresponding to the heat exchanger connected to the compressor to be turned off;

[0074] When the ambient temperature is less than 0° C. and the ambient humidity is greater than 90%, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube.

[0075] The first heating element can heat the water receiving tray, and the second heating element can heat the collection pipe to prevent the defrost water from freezing in these parts, ensuring that the defrost water can flow smoothly and avoiding blockage due to freezing.

[0076] Among them, when the ambient temperature is greater than or equal to 0°C, turning off the first heating element and the second heating element can save energy. When the ambient temperature is greater than or equal to -8°C and less than 0°C, and the ambient humidity is less than or equal to 70%, turning on the first heating element and the second heating element can ensure that the defrost water does not freeze. When the defrost mode is turned off, delaying the shutdown of the heating element can ensure thorough defrosting. When the ambient humidity is greater than 70% and less than or equal to 90%, turning on the first heating element and the second heating element can ensure prevention of ice formation under high humidity. When the humidity is greater than 90%, turning on the first heating element and the second heating element for continuous heating can prevent the risk of ice formation caused by high humidity.

[0077] With such a configuration, the control device can obtain ambient temperature and humidity data in real time to determine the start and stop status of the first heating element and the second heating element. It can effectively prevent the defrost water from freezing under various environmental conditions, ensure the reliability and efficiency of the system under low temperature and high humidity conditions, and not only help to improve the automation level of the system, but also help to optimize energy consumption and operating costs, ensuring the stability and long life of the equipment.

[0078] In some embodiments of the present application, including:

[0079] a second water pump, wherein a water inlet end of the second water pump is connected to the storage element, and a water outlet end of the second water pump is connected to the water circulation pipeline;

[0080] The control device is configured as follows:

[0081] Get the current water volume in the water circulation pipeline;

[0082] If the current water volume is less than 60% of the rated capacity, controlling the second water pump to pump water from the storage element;

[0083] When the pumping time of the second water pump is equal to the set pumping time, controlling the second water pump to stop;

[0084] When the second water pump stops, the water volume after replenishment in the water circulation pipeline is obtained. If the water volume after replenishment is less than 60%, the second water pump is controlled to pump water from the storage element, and the pumping time of the second water pump is equal to the set pumping time;

[0085] If the water volume after the water replenishment is lower than 60% for three consecutive times, the control alarm component will issue a water leakage alarm.

[0086] With this arrangement, the second water pump can draw defrost water from the storage element and deliver it to the water circulation pipe to replenish the water volume of the water circulation system. This can ensure that the water volume in the water circulation pipe is maintained at a reasonable level, avoiding system operation problems caused by insufficient water. At the same time, it also realizes the recycling of defrost water and reduces dependence on external water sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0088] Figure 1 A schematic diagram of the structure of an air source heat pump provided in an embodiment of the present application;

[0089] Figure 2 for Figure 1 Schematic diagram of the connection structure between the medium water box and the first water pump;

[0090] Figure 3 for Figure 2 Schematic diagram of the structure of the grey water box;

[0091] Figure 4 for Figure 1 Schematic diagram of the connection structure between the defrost water storage component and the second water pump;

[0092] Figure 5 A schematic diagram of a process for collecting defrost water by an air source heat pump provided in an embodiment of the present application;

[0093] Figure 6 Schematic diagram of the defrosting process of the air source heat pump provided in the embodiment of the present application Figure 1 ;

[0094] Figure 7Schematic diagram of the defrosting process of the air source heat pump provided in the embodiment of the present application Figure 2 ;

[0095] Figure 8 Schematic diagram of the defrosting process of the air source heat pump provided in the embodiment of the present application Figure 3 ;

[0096] Fig. 9 Schematic diagram of the defrosting process of the air source heat pump provided in the embodiment of the present application Figure 4 ;

[0097] Fig.10 Schematic diagram of the defrosting process of the air source heat pump provided in the embodiment of the present application Figure 5 ;

[0098] Fig.11 A schematic diagram of the process of recycling air source heat pump defrost water provided in an embodiment of the present application.

[0099] Description of reference numerals:

[0100] 100-heat exchanger;

[0101] 200-water tray;

[0102] 210-first heating element;

[0103] 310-water box; 311-first position; 312-second position; 313-first heating rod;

[0104] 320-defrost water storage component; 321-second heating rod;

[0105] 330 - first water pump; 331 - filter; 332 - first check valve;

[0106] 340-liquid level sensor; 341-first liquid level sensor; 342-second liquid level sensor;

[0107] 350 - collection tube; 351 - second heating element;

[0108] 360-collecting pipe;

[0109] 370 - second water pump; 371 - second check valve;

[0110] 380-drain pipe;

[0111] 390-Water supply pipe. DETAILED DESCRIPTION

[0112] As described in the background technology, in the related art, the heat pump unit will frost in a low temperature environment. Frosting is caused by the condensation of water vapor in the air on the surface of the low-temperature fin heat exchanger and freezing into ice crystals. This layer of ice will gradually thicken, hindering the effective transfer of heat, resulting in a significant decrease in the heating efficiency of the heat pump. In order to maintain the normal operation and heating performance of the system, defrosting operations must be performed regularly.

[0113] The defrosting process is usually achieved by changing the working mode of the heat pump, such as temporarily switching to cooling mode to increase the temperature of the fin heat exchanger and melt the frost on the surface. However, a large amount of defrosting water will be generated in this process. If the defrosting water is not collected and handled in a timely and proper manner, especially in cold winter, it will quickly freeze around the unit, especially the water tray and the bottom of the fin heat exchanger. Once these key parts are covered with ice, the effective heat exchange area will be further reduced, the heating effect will be deteriorated, and it may even cause unit failure.

[0114] In addition, the randomly discharged defrost water will also increase the air humidity in the station. The high humidity environment will accelerate the speed of re-frost on the surface of the heat pump unit, resulting in a shorter defrost cycle and more frequent defrost operations. This not only increases energy consumption, but also further aggravates heat loss due to frequent start and stop and temperature fluctuations, reducing the energy efficiency of the entire heating system.

[0115] In order to solve the above-mentioned technical problems, the technical solution of the present application provides an air source heat pump, including a water receiving tray, which is arranged at the bottom of the heat exchanger to receive defrost water on the surface of the heat exchanger.

[0116] In order to collect the defrost water in time to prevent the defrost water from freezing at the bottom of the water receiving tray and the fin heat exchanger, and to avoid the random discharge of the defrost water, the air source heat pump provided in the embodiment of the present application is also provided with a defrost water collection component.

[0117] The defrost water collection assembly includes a water box and a defrost water storage member. The water box is connected to the water receiving tray and is used to receive and store the defrost water received by the water receiving tray. The water outlet of the water box is connected to the defrost water storage member. When the volume of the defrost water in the water box is greater than the pumping volume, the water box can discharge at least part of the defrost water.

[0118] The water box can collect the defrost water received by the water tray in time to prevent the defrost water from staying in the water tray or the bottom of the fin heat exchanger for a long time and causing ice. The defrost water in the water box is discharged when the water volume reaches a certain level, which can avoid overflow of the water box and accumulation of defrost water around the equipment.

[0119] The defrost water storage component can centrally store the defrost water discharged from the water box, avoiding the problem of increased ambient humidity and accelerated frosting of equipment caused by random discharge of defrost water.

[0120] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0121] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and common meanings.

[0122] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0123] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0124] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0125] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0126] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0127] Combination Figure 1 As shown, an embodiment of the present application provides an air source heat pump.

[0128] In some embodiments, the air source heat pump includes a compressor that can compress the refrigerant to increase the pressure and temperature of the refrigerant, so that the refrigerant can perform heat exchange in the heat exchanger 100 .

[0129] In some embodiments, the air source heat pump includes a plurality of heat exchangers 100. At least some of the heat exchangers 100 can absorb heat through the refrigerant from the compressor; at least some of the heat exchangers 100 can release heat through the refrigerant from the compressor.

[0130] In some embodiments, the heat exchanger 100 may include a condenser and a fin heat exchanger, both of which are connected to the compressor. The condenser may be provided in the outdoor unit, and the fin heat exchanger may be provided in the indoor unit.

[0131] During the heating process, the fin heat exchanger can absorb heat from the outdoor air, evaporating the refrigerant into gas, so that when the refrigerant enters the condenser, the refrigerant temperature is higher than the ambient temperature, so the refrigerant will release heat to the surrounding environment (i.e. indoor air). This process usually conducts heat through the metal material of the condenser tube wall, thereby transferring heat to the indoor air or water circulation pipe for heating.

[0132] In the defrost mode, the refrigerant flows in reverse, and the high-temperature and high-pressure gaseous refrigerant flows to the fin heat exchanger, and its heat is used to increase the heat around the fin heat exchanger to achieve defrosting.

[0133] In some embodiments, the air source heat pump may include a water receiving tray 200. The water receiving tray 200 may be arranged in a one-to-one correspondence with the heat exchanger 100, and the water receiving tray 200 may be arranged at the bottom of the heat exchanger 100. The water receiving tray 200 may receive the defrosting water melted on the surface of the heat exchanger 100 to prevent the defrosting water from dripping on the ground and freezing, thereby affecting the operation and safety of the equipment.

[0134] In some embodiments, the air source heat pump may include a defrost water collection component. By providing the defrost water collection component, the defrost water can be collected and processed to avoid the problem of defrost water freezing around the device and the increase of ambient humidity.

[0135] In some embodiments, the defrost water collection assembly may include a water box 310. The water box 310 is in communication with the water receiving tray 200, and the water box 310 is used to receive and store the defrost water received by the water receiving tray 200.

[0136] The water box 310 allows the defrost water to be discharged from the water receiving tray 200 in time and stored temporarily, which helps to prevent the defrost water from staying in the water receiving tray 200 or the bottom of the fin heat exchanger for a long time and causing freezing, and also helps to avoid the random discharge of the defrost water.

[0137] In some embodiments, the water box 310 can be configured to discharge at least part of the defrost water when the volume of the defrost water in the water box 310 is greater than the pumping volume. The defrost water in the water box 310 is discharged when the water volume reaches a certain level, thereby avoiding overflow of the water box 310 and accumulation of defrost water around the device.

[0138] In some embodiments, a temperature sensor may be provided in the water box 310. The temperature sensor is used to monitor the water temperature in the water box 310 in real time. By monitoring the water temperature, the system can respond to temperature changes in a timely manner to ensure that the water temperature is maintained within an appropriate range to prevent freezing.

[0139] In some embodiments, a first heating rod 313 may be provided in the water box 310. The first heating rod 313 may be activated to heat when the water temperature is too low to prevent the defrosting water in the water box 310 from freezing; and the heating may be stopped when the water temperature reaches a set value to save energy.

[0140] For example, when the temperature sensor detects that the water temperature in the water box 310 is less than or equal to 2° C., a signal can be sent to the control device, and the control device can control the first heating rod 313 to start to heat the water in the water box 310 to prevent freezing.

[0141] When the temperature sensor detects that the water temperature in the water box 310 is greater than or equal to 10° C., a signal can be sent to the control device, and the control device can control the first heating rod 313 to stop running to stop heating and avoid unnecessary energy consumption.

[0142] In some embodiments, a heat preservation layer may be provided on the outside of the water box 310. The heat preservation layer can reduce the heat exchange between the inside and outside of the water box 310, reduce the influence of the ambient temperature on the water temperature in the water box 310, keep the water temperature stable, and reduce the working frequency and energy consumption of the heating rod.

[0143] In some embodiments, the defrost water collecting assembly may include a defrost water storage member 320 , and the defrost water storage member 320 is communicated with the water outlet end of the water box 310 .

[0144] The defrost water storage part 320 is used to further store the defrost water discharged from the water box 310 to ensure that the defrost water is properly processed. Through the defrost water storage part 320, the defrost water can be centrally stored, avoiding the problem of increased environmental humidity and accelerated frosting of the equipment caused by the random discharge of defrost water.

[0145] In some embodiments, the volume of the defrost water storage member 320 may be greater than 8 times the volume of the water box 310. The larger volume of the defrost water storage member 320 may provide more sufficient space to store defrost water, reducing the need for frequent emptying or handling.

[0146] Under extreme weather conditions (such as sustained low temperatures or high humidity), the defrost frequency and water volume may increase, and the larger storage capacity provides better buffering capacity to ensure the continuity and reliability of defrost water collection.

[0147] In some embodiments, a temperature sensor may be provided in the defrost water storage part 320. The temperature sensor is used to monitor the water temperature in the defrost water storage part 320 in real time. By monitoring the water temperature, the system can respond to temperature changes in a timely manner to ensure that the water temperature is maintained within an appropriate range to prevent freezing.

[0148] In some embodiments, a second heating rod 321 may be provided in the defrost water storage part 320. The second heating rod 321 may be activated to heat when the water temperature is too low to prevent the defrost water in the defrost water storage part 320 from freezing; and the heating may be stopped when the water temperature reaches a set value to save energy.

[0149] Exemplarily, when the temperature sensor detects that the water temperature in the defrost water storage part 320 is less than or equal to 2° C., a signal can be sent to the control device, and the control device can control the second heating rod 321 to start to heat the water in the defrost water storage part 320 to prevent freezing.

[0150] When the temperature sensor detects that the water temperature in the defrost water storage part 320 is greater than or equal to 10° C., a signal can be sent to the control device, and the control device can control the second heating rod 321 to stop running to stop heating and avoid unnecessary energy consumption.

[0151] In some embodiments, a heat preservation layer may be provided on the outside of the defrost water storage member 320. The heat preservation layer can reduce the heat exchange between the inside and outside of the defrost water storage member 320, reduce the influence of the ambient temperature on the water temperature in the defrost water storage member 320, keep the water temperature stable, and reduce the working frequency and energy consumption of the heating rod.

[0152] Specifically, the air source heat pump of the embodiment of the present application can effectively perform defrost operations, collect and process defrost water, avoid the problem of defrost water freezing around the equipment and increased ambient humidity, thereby helping to improve the operating efficiency and reliability of the heat pump, extend the service life of the equipment, and reduce energy consumption.

[0153] Combination Figures 1 to 3 As shown, in some embodiments, the defrost water collecting assembly may further include a first water pump 330 . The water inlet of the first water pump 330 is communicated with the water box 310 , and the water outlet of the first water pump 330 is communicated with the defrost water storage member 320 .

[0154] By providing the first water pump 330, the system can actively pump water out of the water box 310 and transport it to the defrost water storage part 320 when the defrost water reaches a certain liquid level. This active transport mechanism ensures that the defrost water can be transferred in time to prevent the water box 310 from overflowing, and also helps to realize the centralized treatment of the defrost water.

[0155] In some embodiments, the defrost water collecting assembly may further include a liquid level sensor 340 .

[0156] It can be understood that the liquid level sensor 340 can be used to detect the liquid level of the defrost water in the water box 310 to obtain the volume of the defrost water in the water box 310 .

[0157] The liquid level sensor 340 can be connected to the control device for communication. The liquid level sensor 340 can transmit the volume information of the defrosting water in the water box 310 to the control device. When the water level reaches a preset value, the liquid level sensor 340 sends a signal to the control device to trigger the start of the first water pump 330, thereby realizing an automated water transfer process. This automated control improves the operating efficiency and reliability of the system.

[0158] In some embodiments, the defrost water collecting assembly may further include a drain pipe 380. The water inlet end of the drain pipe 380 is communicated with the water box 310, and the water outlet end of the drain pipe 380 is communicated with the defrost water storage member 320. The first water pump 330 may be disposed on the drain pipe 380.

[0159] It can be understood that the drain pipe 380 can provide a dedicated water flow path so that the defrost water can be quickly transported from the water box 310 to the defrost water storage member 320 .

[0160] In some embodiments, a filter 331 may be provided at the water inlet of the first water pump 330 .

[0161] It is understandable that the filter 331 is used to remove impurities and particles in the defrost water, prevent impurities from entering the water pump, and reduce the risk of wear and blockage. In addition, by removing impurities, the filter 331 can also reduce the possibility of pipeline blockage and ensure that the defrost water can flow smoothly.

[0162] Exemplarily, the filter 331 may be a Y-type filter 331. The Y-type filter 331 has the characteristics of small resistance and convenient sewage discharge, and is widely used in the fields of air conditioning and refrigeration systems, central heating systems, and hot water boiler systems.

[0163] In some embodiments, a first check valve 332 may be provided at the water outlet of the first water pump 330 .

[0164] It can be understood that the first check valve 332 allows water to flow in one direction, ensuring that water can only flow from the first water pump 330 to the defrost water storage element 320, thereby preventing defrost water from flowing back to the water box 310 or other upstream components when the first water pump 330 stops.

[0165] In some embodiments, the air source heat pump may further include a control device, which may receive a signal from the liquid level sensor 340 and control the operation of the first water pump 330 according to a preset logic to ensure timely processing of defrost water.

[0166] The control device can enable the system to automatically control the start and stop of the first water pump 330 according to the real-time liquid level information, which not only helps to improve the efficiency of defrost water treatment, but also helps to reduce the need for manual intervention and reduce operating costs.

[0167] Specifically, the air source heat pump provided in the embodiment of the present application can realize the automatic management of defrost water. By providing the first water pump 330, when the defrost water reaches a certain volume, water can be actively pumped out from the water box 310 and transported to the defrost water storage part 320. This design avoids the risk of overflow caused by excessive accumulation of defrost water in the water box 310, while ensuring the centralized treatment of defrost water.

[0168] The installation of the liquid level sensor 340 enables the system to monitor the water level in the water box 310 in real time. When the water level reaches a preset value, the liquid level sensor 340 sends a signal to the control device to trigger the start of the first water pump 330, thereby realizing an automated water transfer process. This automated control improves the operating efficiency and reliability of the system.

[0169] Combination Figure 3 As shown, in some embodiments, there can be multiple liquid level sensors 340, and multiple liquid level sensors 340 can measure multiple liquid levels of defrost water, so that the system can respond accordingly under different water level conditions to ensure the timeliness and accuracy of defrost water processing.

[0170] In some embodiments, the plurality of liquid level sensors 340 may include a first liquid level sensor 341. The first liquid level sensor 341 may be disposed at the first position 311 of the water box 310. The first liquid level sensor 341 may detect that the defrosting water in the water box 310 reaches the first position 311, and send a signal to the control device to start the first water pump 330.

[0171] In some embodiments, the first liquid level sensor 341 can be configured as follows: when the defrost water volume in the water box 310 is greater than the pumping volume, the first liquid level sensor 341 sends a first signal to the control device, and the control device controls the first water pump 330 to pump water from the water box 310.

[0172] It can be understood that the first position 311 is located at a higher position in the water box 310. When the defrost water reaches the first position 311, it means that the defrost water volume in the water box 310 reaches the pumping volume. The amount of water in the water box 310 is sufficient and needs to be pumped out in time to prevent overflow.

[0173] After the first liquid level sensor 341 sends the first signal to the control device, the control device starts the first water pump 330 to transport water to the defrost water storage element 320 .

[0174] In some embodiments, the plurality of liquid level sensors 340 may include a second liquid level sensor 342. The second liquid level sensor 342 may be disposed at the second position 312 of the water box 310. The second liquid level sensor 342 may detect when the defrost water in the water box 310 reaches the second position 312, and send a signal to the control device to stop the first water pump 330.

[0175] In some embodiments, the second liquid level sensor 342 can be configured such that when the defrost water volume in the water box 310 is lower than the stop volume, the second liquid level sensor 342 sends a second signal to the control device, and the control device controls the first water pump 330 to stop pumping water from the water box 310 .

[0176] It can be understood that the first position 311 is located at a lower position in the water box 310, and the height of the second position 312 is lower than the height of the first position 311. When the defrost water reaches the second position 312, it means that the volume of the defrost water in the water box 310 has been reduced to the stop volume, the amount of water in the water box 310 is small, and the pumping can be stopped.

[0177] After the second liquid level sensor 342 sends the second signal to the control device, the control device stops the operation of the first water pump 330, which can prevent the first water pump 330 from idling due to excessive pumping.

[0178] Specifically, the air source heat pump provided in the embodiment of the present application improves the automation level and operation efficiency of the system through the multi-point monitoring and control mechanism of the first liquid level sensor 341 and the second liquid level sensor 342, so that the system can accurately monitor and manage the defrost water level in the water box 310, ensure the timely processing of the defrost water and the safe operation of the equipment, and improve the reliability and energy efficiency of the air source heat pump.

[0179] Exemplarily, the first liquid level sensor 341 and the second sensor may be float switches.

[0180] It is understandable that the float switch is a device that uses the change in the buoyancy of the float in the liquid to detect the liquid level. When the liquid level rises or falls, the float moves up and down accordingly. The float is usually equipped with a ring magnet, and one or more reed switches are installed in the sealed non-magnetic tube. The movement of the float drives the reed switch to produce an action of closing or disconnecting, thereby outputting a switch signal, which is transmitted to the first water pump 330.

[0181] By configuring the first liquid level sensor 341 and the second sensor as float switches, the device has the characteristics of simple structure, low cost and wide application range.

[0182] Exemplarily, the ratio of the pumping volume to the stop volume is 2-4.

[0183] It can be understood that by setting the ratio of the pumping volume and the stop volume, the system can start pumping when the defrost water in the water box 310 reaches a certain amount, and stop pumping when the water volume decreases to a certain level, ensuring efficient operation of the water pump and effective utilization of the water box 310.

[0184] For example, the ratio of the pumping volume to the stop volume can be set within any ratio range of 2-2.5, 2.5-3, 3-3.5, or 3.5-4, so that the operation cycle of the water pump is moderate, energy consumption and equipment wear caused by frequent startup and shutdown are avoided, and the risk of overflow of the water box 310 is prevented.

[0185] Combination Figure 1 As shown, in some embodiments, the water receiving tray 200 may be provided with a collection pipe 350. The water inlet end of the collection pipe 350 may be connected to the water receiving tray 200, so that the defrost water can flow directly from the water receiving tray 200 into the collection pipe 350. The water outlet end of the collection pipe 350 may be connected to the water box 310, ensuring that the defrost water can smoothly enter the water box 310 for storage.

[0186] Through the design of the collection tube 350, the defrost water can be quickly and promptly discharged from the water receiving tray 200, reducing the residence time of the defrost water in the water receiving tray 200, preventing excessive water accumulation in the water receiving tray 200, and thus avoiding overflow or freezing problems caused by accumulated water.

[0187] Exemplarily, each water tray 200 may be equipped with at least one collecting pipe 350. Each collecting pipe 350 may be connected to different positions of the water tray 200 to fully drain the defrost water in the water tray 200 and allow the defrost water to quickly enter the water box 310.

[0188] In some embodiments, a collecting pipe 360 ​​may be provided at the water outlet of the collecting pipe 350. The water inlet of the collecting pipe 360 ​​may be connected to the water outlet of each collecting pipe 350 of the water receiving tray 200, so that the defrost water from each collecting pipe 350 is collected into the collecting pipe 360. The water outlet of the collecting pipe 360 ​​may be connected to the water box 310, so that the defrost water collected by the collecting pipe 360 ​​can enter the water box 310 for storage.

[0189] By providing the collecting pipe 360, the defrost water in each collecting pipe 350 of the water receiving tray 200 can be easily merged and enter the water box 310 through the water outlet end of the collecting pipe 360. And it is only necessary to connect the water outlet end of the collecting pipe 360 ​​with the water box 310 and seal it, which reduces the difficulty of installation and maintenance, and reduces the potential risk of leakage.

[0190] In some embodiments, the height of the water inlet end of the manifold 360 can be higher than the height of the water outlet end of the manifold 360. With such a configuration, the height difference enables the defrost water to automatically flow to the water box 310 under the action of gravity, reducing the need for mechanical transportation, and reducing the operating cost and complexity of the system. In addition, gravity flow can ensure that the water flow direction is consistent, reducing the possibility of water stagnation in the pipe, thereby reducing the risk of blockage.

[0191] In some embodiments, a heat preservation layer may be provided on the surface of the manifold 360. The heat preservation layer reduces heat loss and keeps the temperature in the pipe above the freezing point, especially in a cold environment, and can prevent the defrosting water in the manifold 360 from freezing in a low temperature environment.

[0192] By preventing the formation of ice, the fluidity of the defrost water can be maintained, ensuring that the defrost water can be delivered to the water box 310 in time for storage and reuse, thereby avoiding additional maintenance and energy consumption caused by the formation of ice.

[0193] Combination Figure 1 As shown, in some embodiments, the water receiving tray 200 may be provided with a first heating element 210 , and the first heating element 210 is used to defrost the water receiving tray 200 .

[0194] It is understandable that the bottom of the heat exchanger 100 is close to the water tray, and the defrosted water will flow through the bottom of the heat exchanger 100 and drip into the water tray. In a low temperature environment, the defrosted water in the water tray 200 and the bottom of the heat exchanger 100 may refreeze, resulting in poor water flow and affecting the heat exchange area.

[0195] By setting a first heating element 210 on the water receiving tray 200, the water receiving tray 200 can be heated to keep its temperature above the freezing point, and at the same time, the temperature at the bottom of the heat exchanger 100 is also increased, thereby preventing the defrost water from freezing and ensuring the heat exchange area, so that the defrost water can smoothly flow into the collection pipe 350 and enter the water box 310 for collection.

[0196] For example, the first heating element 210 may be a waterproof electric heating tape, which has a waterproof effect and can avoid short circuits.

[0197] In some embodiments, the first heating element 210 can be disposed on the top of the water receiving tray 200. Top heating helps to quickly heat the defrosted water on the upper layer of the water receiving tray 200 to prevent the surface from freezing. In addition, top heating makes it easier to heat the bottom of the heat exchanger 100, which helps to prevent the defrosted water from freezing at the bottom of the heat exchanger 100.

[0198] In some embodiments, the first heating element 210 may be disposed at the bottom of the water tray 200. Bottom heating can increase the water temperature in the entire water tray by conduction, which helps to evenly heat the entire water tray 200 and prevent the defrosted water in the bottom and edge areas from freezing.

[0199] Combination Figure 1 As shown, in some embodiments, a second heating element 351 may be provided in the collection tube 350 , and the second heating element 351 is used to defrost the collection tube 350 .

[0200] It is understandable that in a low temperature environment, the defrosted water in the collection pipe 350 may refreeze, resulting in poor water flow. By arranging the second heating element 351 in the collection pipe 350, the collection pipe 350 can be heated to keep its temperature above the freezing point, thereby preventing the defrosted water from freezing and ensuring that the defrosted water can flow smoothly into the water box 310.

[0201] Exemplarily, the second heating element 351 may be a waterproof electric heating tape, which has a waterproof effect and can avoid short circuits.

[0202] In some embodiments, the second heating element 351 may also be disposed outside the collection tube 350. The second heating element 351 heats the collection tube 350, and can increase the water temperature in the entire collection tube 350 through conduction, which helps to evenly heat the entire collection tube 350 and prevent the defrosted water from freezing.

[0203] Combination Figure 1 and Figure 4 As shown, in some embodiments, the defrost water collection assembly may further include a second water pump 370. The water inlet of the second water pump 370 may be communicated with the defrost water storage member 320, and the water outlet of the second water pump 370 may be communicated with the water circulation pipeline.

[0204] The water stored in the defrost water storage member 320 can be delivered to the water circulation pipeline by the second water pump 370 for other purposes, such as replenishing the water source of the water circulation pipeline or for other heating needs. This reuse reduces the waste of water resources.

[0205] By connecting the water inlet of the second water pump 370 with the defrost water storage part 320, defrost water can be directly extracted from the defrost water storage part 320, ensuring the effective use of water resources. By connecting the water outlet of the second water pump 370 with the water circulation pipeline, defrost water can be transported to the water circulation pipeline, and water replenishment to the air heat source pump can be achieved, thereby realizing the reuse of defrost water.

[0206] In some embodiments, the defrost water collection assembly further includes a water supply pipe 390. The water inlet end of the water supply pipe 390 is connected to the defrost water storage element 320, and the water outlet end of the water supply pipe 390 is connected to the water circulation pipeline. The second water pump 370 can be disposed on the water supply pipe 390.

[0207] It can be understood that the drain pipe 380 can provide a dedicated water flow path so that the defrost water can be quickly transported from the defrost water storage member 320 to the water circulation pipeline.

[0208] In some embodiments, the water inlet end of the water supply pipe 390 can be arranged near the bottom of the defrost water storage part 320. The bottom water intake method can effectively extract the remaining defrost water when the water level of the defrost water storage part 320 is low, so as to maximize the use of storage capacity and reduce water waste.

[0209] In some embodiments, the water outlet of the second water pump 370 may be provided with a second check valve 371 .

[0210] It can be understood that the second check valve 371 allows water to flow in one direction, ensuring that water can only flow from the second water pump 370 to the water circulation pipeline, thereby preventing defrost water from flowing back to the defrost water storage element 320 or other upstream components when the water pump stops.

[0211] Combination Figure 1 As shown, an embodiment of the present application provides an air source heat pump.

[0212] The air source heat pump includes a compressor that can compress the refrigerant to increase the pressure and temperature of the refrigerant, so that the refrigerant can effectively exchange heat in the heat exchanger 100 .

[0213] The air source heat pump includes a plurality of heat exchangers 100, and the heat exchangers 100 may include a condenser and a fin heat exchanger, and both the condenser and the fin heat exchanger are connected to the compressor. The condenser is arranged in the outdoor unit, and the fin heat exchanger is arranged in the indoor unit.

[0214] During the heating process, the fin heat exchanger can absorb heat from the outdoor air, evaporating the refrigerant into gas, so that when the refrigerant enters the condenser, the refrigerant temperature is higher than the ambient temperature, so the refrigerant will release heat to the surrounding environment (i.e. indoor air). This process usually conducts heat through the metal material of the condenser tube wall, thereby transferring heat to the indoor air or water circulation pipe for heating.

[0215] In some embodiments, at least a portion of the heat exchanger 100 can absorb heat through the refrigerant from the compressor; at least a portion of the heat exchanger 100 can release heat through the refrigerant from the compressor.

[0216] In the heating mode, the refrigerant releases heat in the heat exchanger 100 to provide heating to the room; in the defrosting mode, the refrigerant can absorb heat in the heat exchanger 100 to melt the frost layer.

[0217] In some embodiments, the air source heat pump may include a water receiving tray 200. The water receiving tray 200 may be arranged in a one-to-one correspondence with the heat exchanger 100, and the water receiving tray 200 may be arranged at the bottom of the heat exchanger 100. The water receiving tray 200 may receive the defrosting water melted on the surface of the heat exchanger 100 to prevent the defrosting water from dripping on the ground and freezing, thereby affecting the operation and safety of the equipment.

[0218] In some embodiments, the air source heat pump may include a defrost water collection component. By providing the defrost water collection component, the defrost water can be collected and processed to avoid the problem of defrost water freezing around the device and the increase of ambient humidity.

[0219] In some embodiments, the defrost water collection assembly may include a water box 310. The water box 310 is in communication with the water receiving tray 200, and the water box 310 is used to receive and store the defrost water received by the water receiving tray 200.

[0220] The design of the water box 310 ensures that the defrost water can be discharged from the water receiving tray 200 in a timely manner and temporarily stored, which helps to prevent the defrost water from staying in the water receiving tray 200 or the bottom of the fin heat exchanger for a long time and causing freezing, and also helps to avoid the random discharge of the defrost water.

[0221] In some embodiments, the defrost water collecting assembly may include a defrost water storage member 320 , and the defrost water storage member 320 is communicated with the water outlet end of the water box 310 .

[0222] The defrost water storage part 320 is used to further store the defrost water discharged from the water box 310 to ensure that the defrost water is properly processed. Through the defrost water storage part 320, the defrost water can be centrally stored, avoiding the problem of increased environmental humidity and accelerated frosting of the equipment caused by the random discharge of defrost water.

[0223] In some embodiments, the defrost water collecting assembly may further include a first water pump 330 . A water inlet of the first water pump 330 is communicated with the water box 310 , and a water outlet of the first water pump 330 is communicated with the defrost water storage member 320 .

[0224] By providing the first water pump 330, the system can actively pump water out of the water box 310 and transport it to the defrost water storage part 320 when the defrost water reaches a certain liquid level. This active transport mechanism ensures that the defrost water can be transferred in time to prevent the water box 310 from overflowing, and also helps to realize the centralized treatment of the defrost water.

[0225] In some embodiments, the air source heat pump may further include a control device, which may obtain the current volume of the defrost water and control the operation of the first water pump 330 according to a preset logic, so as to actively pump water out of the water box 310 and transport it to the defrost water storage member 320 when the defrost water reaches a certain volume.

[0226] Combination Figure 5 As shown, in some embodiments, the control device may perform the following steps of collecting defrost water:

[0227] S101, controlling the heat exchanger 100 to be in a defrosting mode, and forming defrosting water on the surface of the heat exchanger 100;

[0228] S102, obtaining defrost water from the heat exchanger 100 through the water receiving tray 200, and allowing the defrost water to flow into the water box 310 through the water receiving tray 200;

[0229] S103, obtaining the current volume of defrost water in the water box 310;

[0230] S104 , if the current volume of the defrost water is greater than or equal to the preset volume, control the first water pump 330 to pump water from the water box 310 and discharge the defrost water to the defrost water storage element 320 .

[0231] It can be understood that in the defrost mode, the refrigerant flows in reverse, and the high-temperature and high-pressure gaseous refrigerant flows to the fin heat exchanger, and its heat is used to increase the heat around the fin heat exchanger to perform defrosting.

[0232] In some embodiments, the control device can obtain the defrost water volume in the water box 310 through the liquid level sensor 340. When the water level reaches a preset value, the liquid level sensor 340 sends a signal to the control device to trigger the start of the first water pump 330, thereby realizing an automated water transfer process.

[0233] Specifically, the water box 310 can collect and store the defrost water received by the water receiving tray 200 in a timely manner, which helps to prevent the defrost water from gathering in the water receiving tray 200 and causing freezing. In addition, by monitoring the volume of the defrost water in the water box 310 and intelligently controlling the start and stop of the water pump, it is possible to ensure that the water level in the water box 310 remains within a safe range, and to respond to changes in the water volume in a timely manner, thereby avoiding overflow of the water box 310 or waste of water resources, and at the same time optimizing the operating efficiency of the water pump and reducing energy consumption. The air source heat pump of the embodiment of the present application can effectively perform defrosting operations, collect and process defrost water, avoid the problem of defrost water freezing around the device and increased environmental humidity, thereby helping to improve the operating efficiency and reliability of the heat pump.

[0234] In some embodiments, the air source heat pump may further include a first heating element 210. The first heating element 210 may be disposed on the water receiving tray 200, and the first heating element 210 is used to defrost the water receiving tray 200.

[0235] Understandably, in a low temperature environment, the defrosted water in the water receiving tray 200 may refreeze, resulting in poor water flow. By providing the first heating element 210 in the water receiving tray 200, the water receiving tray 200 can be heated to keep its temperature above the freezing point, thereby preventing the defrosted water from freezing and ensuring that the defrosted water can flow smoothly into the collection pipe 350.

[0236] In some embodiments, the water receiving tray 200 may be provided with a collection tube 350. The water inlet end of the collection tube 350 may be connected to the water receiving tray 200, so that the defrost water can flow directly from the water receiving tray 200 into the collection tube 350. The water outlet end of the collection tube 350 may be connected to the water box 310, ensuring that the defrost water can smoothly enter the water box 310 for storage.

[0237] In some embodiments, the air source heat pump may further include a second heating element 351. The second heating element 351 may be disposed on the collection pipe 350, and the second heating element 351 is used to defrost the collection pipe 350.

[0238] By arranging the second heating element 351 in the collecting tube 350 , the collecting tube 350 can be heated to keep its temperature above the freezing point, thereby preventing the defrost water from freezing and ensuring that the defrost water can flow smoothly into the water box 310 .

[0239] Combination Figure 6 As shown, in some embodiments, the control device can perform the following steps to connect the water tray 200 and the collection tube 350 to defrost:

[0240] S201, obtaining the ambient temperature and humidity of the air source heat pump;

[0241] S202a, when the ambient temperature is greater than or equal to 0°C, controlling the first heating element 210 and the second heating element 351 to be turned off;

[0242] S202b, when the ambient temperature is less than 0°C and the ambient humidity is greater than 90%, control the first heating element 210 to defrost the water tray 200, and control the second heating element 351 to defrost the collection tube 350.

[0243] It should be noted that the ambient temperature and ambient humidity of the air source heat pump are the ambient temperature and ambient humidity around the fin heat exchanger arranged outdoors.

[0244] It can be understood that when the ambient temperature is greater than or equal to 0° C., turning off the first heating element 210 and the second heating element 351 can save energy.

[0245] When the ambient temperature is less than 0° C. and the ambient humidity is greater than 90%, controlling the first heating element 210 and the second heating element 351 to continue heating can prevent the risk of icing caused by high humidity.

[0246] Combination Figure 7 As shown, in some embodiments, the control device can perform the following steps to connect the water tray 200 and the collection tube 350 to defrost:

[0247] S201, obtaining the ambient temperature and humidity of the air source heat pump;

[0248] S202c, when the ambient temperature is greater than or equal to -8°C and less than 0°C, and the ambient humidity is less than or equal to 70%, the heat exchanger 100 is controlled to be in defrosting mode, the first heating element 210 is controlled to be connected to the water tray 200 for defrosting, and the second heating element 351 is controlled to be connected to the collection tube 350 for defrosting;

[0249] S203c, when the defrost mode starts to be turned off, keeping the first heating element 210 and the second heating element 351 in the turned-on state;

[0250] S204c, when the time when the defrost mode is in the off state is greater than the first set time, control the first heating element 210 and the second heating element 351 to be off.

[0251] It can be understood that when the defrost mode is turned off, delaying the first set time before turning off the first heating element 210 and the second heating element 351 can ensure thorough defrosting of the water tray 200 and the collection tube 350 to prevent the water tray 200 and the collection tube 350 from freezing and affecting the smooth collection of defrost water.

[0252] For example, the first set time can be set within any range of 3 minutes to 4 minutes, 4 minutes to 5 minutes, 5 minutes to 6 minutes, and 6 minutes to 7 minutes, so that heat can continue to be provided after the defrost mode is turned off to ensure that residual ice crystals or moisture in the water receiving tray 200 and the collection tube 350 are removed to prevent freezing.

[0253] Combination Figure 8 As shown, in some embodiments, the control device can perform the following steps to connect the water tray 200 and the collection tube 350 to defrost:

[0254] S201, obtaining the ambient temperature and humidity of the air source heat pump;

[0255] S202d, when the ambient temperature is greater than or equal to -8°C and less than 0°C, and the ambient humidity is greater than 70% and less than or equal to 90%, control the compressor and the heat exchanger 100 to operate, control the first heating element 210 to connect to the water tray 200 to defrost, and control the second heating element 351 to defrost the collection pipe 350;

[0256] S203d, when a compressor starts to shut down, keeping the first heating element 210 and the second heating element 351 in an on state;

[0257] S204d: When the compressor is in the off state for a time period greater than a first set time period, the first heating element 210 and the second heating element 351 corresponding to the heat exchanger 100 connected to the compressor are controlled to be off.

[0258] It is understandable that the operation of the compressor and the heat exchanger 100 can heat the indoor environment. During the heating process, the system will intermittently operate the defrosting mode, that is, temporarily stop the heating function, and remove the frost layer on the surface of the outdoor heat exchanger 100 by reversing the roles of the indoor and outdoor heat exchangers 100.

[0259] When a compressor is turned off, the heat exchanger 100 connected to the compressor no longer receives heat from the compressor, so its defrosting ability will be affected. In order to prevent the defrosted water from freezing on the water receiving tray 200 and the collection pipe 350, the first heating element 210 and the second heating element 351 corresponding to the heat exchanger 100 connected to the compressor can be turned off after a first set time, which helps to ensure that the water in the water receiving tray 200 and the collection pipe 350 has enough time to be discharged, thereby avoiding the occurrence of freezing problems.

[0260] For example, the first set time can be set within any range of 3 minutes to 4 minutes, 4 minutes to 5 minutes, 5 minutes to 6 minutes, and 6 minutes to 7 minutes, so that after a compressor is turned off, the first heating element 210 and the second heating element 351 can continue to provide heat to ensure that residual ice crystals or moisture in the water receiving tray 200 and the collection tube 350 are removed to prevent freezing and ensure smooth collection of defrost water.

[0261] Combination Fig. 9 As shown, in some embodiments, the control device can perform the following steps to connect the water tray 200 and the collection tube 350 to defrost:

[0262] S201, obtaining the ambient temperature and humidity of the air source heat pump;

[0263] S202e, when the ambient temperature is less than -8°C and the ambient humidity is less than or equal to 70%, the heat exchanger 100 is controlled to be in defrosting mode, the first heating element 210 is controlled to connect to the water tray 200 for defrosting, and the second heating element 351 is controlled to defrost the collection tube 350;

[0264] S203e, when the defrost mode starts to be turned off, keeping the first heating element 210 and the second heating element 351 in the turned-on state;

[0265] S204e: When the time when the defrost mode is in the off state is greater than the second set time, the first heating element 210 and the second heating element 351 are controlled to be off.

[0266] It is understandable that when the defrost mode is turned off, due to the low ambient temperature, the defrosted water on the water receiving tray 200 and the collection pipe 350 is more likely to freeze. By delaying the second set time and then turning off the first heating element 210 and the second heating element 351, it is possible to ensure that the water receiving tray 200 and the collection pipe 350 are thoroughly defrosted, so as to prevent the water receiving tray 200 and the collection pipe 350 from freezing and affecting the smooth collection of defrosted water.

[0267] For example, the second set time can be set within any range of 9 minutes to 12 minutes, 12 minutes to 15 minutes, 15 minutes to 18 minutes, or 18 minutes to 21 minutes, so that heat can continue to be provided after the defrost mode is turned off, ensuring that residual ice crystals or moisture in the water receiving tray 200 and the collection tube 350 are removed to prevent freezing.

[0268] Combination Fig.10 As shown, in some embodiments, the control device can perform the following steps to connect the water tray 200 and the collection tube 350 to defrost:

[0269] S201, obtaining the ambient temperature and humidity of the air source heat pump;

[0270] S202f, when the ambient temperature is less than -8°C and the ambient humidity is greater than 70% and less than or equal to 90%, the compressor and the heat exchanger 100 are controlled to operate, the first heating element 210 is controlled to connect to the water tray 200 for defrosting, and the second heating element 351 is controlled to defrost the collection pipe 350;

[0271] S203f, when a compressor starts to shut down, keeping the first heating element 210 and the second heating element 351 in the turned-on state;

[0272] S204f, when the time when the compressor is in the off state is greater than the second set time, the first heating element 210 and the second heating element 351 corresponding to the heat exchanger 100 connected to the compressor are controlled to be turned off.

[0273] It is understandable that the operation of the compressor and the heat exchanger 100 can heat the indoor environment. During the heating process, the system will intermittently operate the defrost mode, that is, temporarily stop the heating function, and remove the frost layer on the surface of the outdoor heat exchanger 100 by reversing the roles of the indoor and outdoor heat exchangers 100. When a compressor is turned off, the heat exchanger 100 connected to the compressor no longer receives heat from the compressor, so its defrosting ability will be affected.

[0274] Due to the low ambient temperature, the defrosted water on the water receiving pan 200 and the collection pipe 350 is more likely to freeze. In order to ensure that the defrosted water on the water receiving pan 200 and the collection pipe 350 can be completely removed, the first heating element 210 and the second heating element 351 corresponding to the heat exchanger 100 connected to the compressor can be turned off after a second set time, which helps to ensure that the water in the water receiving pan 200 and the collection pipe 350 has enough time to be discharged, thereby avoiding the occurrence of freezing problems.

[0275] For example, the second set time can be set within any range of 9 minutes to 12 minutes, 12 minutes to 15 minutes, 15 minutes to 18 minutes, and 18 minutes to 21 minutes, so that after a compressor is turned off, the first heating element 210 and the second heating element 351 can continue to provide heat to ensure that residual ice crystals or moisture in the water receiving tray 200 and the collection tube 350 are removed to prevent freezing and ensure smooth collection of defrost water.

[0276] It can be seen that the air heat source pump provided in the embodiment of the present application controls the automatic frost and ice-melting of the first heating element 210 and the second heating element 351 through the control device, which can prevent the water receiving tray 200 and the bottom of the fin heat exchanger from freezing after the heat pump unit is defrosted (or in rainy and snowy weather), resulting in poor heat exchange effect of the unit. It also solves the problem of arbitrary discharge of defrost water in the heat pump station, resulting in serious safety hazards such as freezing of the ground in the heat pump station, and can also prevent defrost water from increasing the air humidity in the heat pump station.

[0277] In some embodiments, the air source heat pump may further include a second water pump 370. The water inlet of the second water pump 370 is communicated with the storage element, and the water outlet of the second water pump 370 is communicated with the water circulation pipeline.

[0278] The water stored in the defrost water storage member 320 can be delivered to the water circulation pipeline by the second water pump 370 to supplement the water source of the water circulation pipeline or be used for other heating needs. Such reuse can reduce the waste of water resources.

[0279] By connecting the water inlet of the second water pump 370 with the defrost water storage element 320, the system can directly extract defrost water from the storage element to ensure the effective use of water resources. By connecting the water outlet of the second water pump 370 with the water circulation pipeline, the system can transport the defrost water to where it is needed, realizing the effective reuse of the defrost water.

[0280] In some embodiments, the air source heat pump may further include an alarm element, which may be communicatively connected to the control device. The alarm element may be used to sound an alarm when a possible water leakage is detected, reminding the user to check the system so as to take timely measures to prevent greater losses caused by the water leakage.

[0281] Combination Fig.11 As shown, in some embodiments, the control device can perform the following steps of water recycling:

[0282] S301, obtaining the current water volume of the water circulation pipeline;

[0283] S302, if the current water volume is less than 60% of the rated capacity, control the second water pump 370 to pump water from the storage element;

[0284] S303, when the pumping time of the second water pump 370 is equal to the set pumping time, control the second water pump 370 to stop;

[0285] S304, when the second water pump 370 stops, the water volume after replenishment in the water circulation pipeline is obtained. If the water volume after replenishment is less than 60%, the second water pump 370 is controlled to pump water from the storage element, and the pumping time of the second water pump 370 is equal to the set pumping time;

[0286] S305: If the water volume after water replenishment is lower than 60% for three consecutive times, the control alarm component will issue a water leakage alarm.

[0287] It can be understood that the control device improves the safety and reliability of the system by real-time monitoring of water volume, intelligently controlling the water replenishment process, and issuing alarms under abnormal conditions. It can efficiently manage the reuse of defrost water and ensure the normal operation of the water circulation system.

[0288] In some embodiments, the water inlet of the water circulation pipe may also be provided with a filter element to filter the water entering the water circulation pipe to prevent foreign matter from entering the water circulation pipe.

[0289] For example, the set pumping time can be set within any range of 3 minutes to 4 minutes, 4 minutes to 5 minutes, 5 minutes to 6 minutes, or 6 minutes to 7 minutes, so that within the set pumping time, the second water pump 370 can transfer enough water to approach or reach the required water level.

[0290] It can be understood that by adopting the defrost water collection component, the defrost water can be effectively collected and added to the water circulation pipeline for reuse, which can not only reduce unnecessary heat loss but also replenish water for the water circulation pipeline.

[0291] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0292] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air source heat pump, characterized in that: include: compressor; A plurality of heat exchangers are connected to the compressor, at least some of the heat exchangers can absorb heat through the refrigerant from the compressor; at least some of the heat exchangers can release heat through the refrigerant from the compressor; A water receiving tray, the water receiving tray is correspondingly arranged at the bottom of the heat exchanger, and the water receiving tray is used to receive defrost water on the surface of the heat exchanger; The defrost water collection component includes: a water box, the water box being in communication with the water receiving tray, the water box being used to receive and store the defrost water received by the water receiving tray; the water box being configured such that when the volume of the defrost water in the water box is greater than the pumping volume, the water box can discharge at least part of the defrost water; A defrost water storage component is communicated with the water outlet end of the water box.

2. The air source heat pump according to claim 1, characterized in that: The defrost water collecting assembly also includes: a first water pump, wherein a water inlet of the first water pump is communicated with the water box, and a water outlet of the first water pump is communicated with the defrost water storage component; A liquid level sensor, the liquid level sensor is at least used to obtain the volume of defrost water in the water box, and the liquid level sensor can be electrically connected to the control device to control the first water pump through the control device.

3. The air source heat pump according to claim 2, characterized in that: The number of the liquid level sensors is multiple, and the multiple liquid level sensors include: A first liquid level sensor is disposed at a first position of the water box, and the first liquid level sensor is configured such that when the volume of defrost water in the water box is greater than the pumping volume, the first liquid level sensor sends a first signal to the control device, and the control device controls the first water pump to pump water from the water box; The second liquid level sensor is arranged at a second position of the water box, and the height of the second position is lower than the height of the first position. The second liquid level sensor is configured as follows: when the volume of defrost water in the water box is lower than the stop volume, the second liquid level sensor sends a second signal to the control device, and the control device controls the first water pump to stop pumping water from the water box.

4. The air source heat pump according to claim 3, characterized in that: The ratio of the pumping volume to the stop volume is 2-4.

5. The air source heat pump according to claim 1, characterized in that: The water receiving tray is provided with a collection pipe, the water inlet end of the collection pipe is communicated with the water receiving tray, and the water outlet end of the collection pipe is communicated with the water box.

6. The air source heat pump according to claim 5, characterized in that: The water receiving tray is provided with a first heating element, and the first heating element is used to defrost the water receiving tray; And / or, a second heating element is provided in the collection tube, and the second heating element is used for defrosting the collection tube.

7. The air source heat pump according to any one of claims 1 to 6, characterized in that: The defrost water collecting assembly also includes: A second water pump, wherein a water inlet of the second water pump is communicated with the defrost water storage component, and a water outlet of the second water pump is communicated with a water circulation pipeline.

8. An air source heat pump, characterized in that: include: compressor; A plurality of heat exchangers are connected to the compressor, at least some of the heat exchangers can absorb heat through the refrigerant from the compressor; at least some of the heat exchangers can release heat through the refrigerant from the compressor; A water receiving tray, the water receiving tray is correspondingly arranged at the bottom of the heat exchanger, and the water receiving tray is used to receive defrost water on the surface of the heat exchanger; The defrost water collection component includes: A water box, the water box is connected with the defrost water collecting component and the water receiving tray, and the water box defrost water collecting component is used to collect, receive and store the defrost water received by the water receiving tray; A defrost water storage component, wherein a water inlet end of the defrost water storage component is connected to a water outlet end of the water box of the defrost water collecting assembly; a first water pump, wherein a water inlet of the first water pump is communicated with the water box, and a water outlet of the first water pump is communicated with the defrost water storage component; A control device, wherein the control device is configured as follows: Controlling the heat exchanger to be in a defrosting mode, so that defrosting water is formed on the surface of the heat exchanger; Obtaining defrost water from the heat exchanger through the water receiving tray, and allowing the defrost water to flow into the water box through the water receiving tray; Obtaining the current volume of the defrost water in the water box; If the current volume of the defrost water is greater than or equal to the preset volume, the first water pump is controlled to pump water from the water box and discharge the defrost water to the defrost water storage component.

9. The air source heat pump according to claim 8, characterized in that: include: A first heating element, disposed on the water receiving tray and used to defrost the water receiving tray; a second heating element, which is arranged on the collection pipe of the water receiving tray and is used to defrost the collection pipe, wherein the water inlet end of the collection pipe is connected to the water receiving tray, and the water outlet end of the collection pipe is connected to the water box; The control device is configured as follows: Obtaining the ambient temperature and humidity of the air source heat pump; When the ambient temperature is greater than or equal to 0°C, the first heating element and the second heating element are controlled to be turned off; When the ambient temperature is greater than or equal to -8°C and less than 0°C, and the ambient humidity is less than or equal to 70%, the heat exchanger is controlled to be in defrosting mode, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube; When the defrost mode starts to be turned off, keeping the first heating element and the second heating element in an on state; When the defrost mode is in the off state for a time period greater than a first set time period, controlling the first heating element and the second heating element to be off; When the ambient temperature is greater than or equal to -8°C and less than 0°C, and the ambient humidity is greater than 70% and less than or equal to 90%, the compressor and the heat exchanger are controlled to operate, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube; When one of the compressors starts to shut down, keeping the first heating element and the second heating element in an on state; When the compressor is in the off state for a time period greater than a first set time period, controlling the first heating element and the second heating element corresponding to the heat exchanger connected to the compressor to be turned off; When the ambient temperature is less than -8°C and the ambient humidity is less than or equal to 70%, the heat exchanger is controlled to be in defrosting mode, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube; When the defrost mode starts to be turned off, keeping the first heating element and the second heating element in an on state; When the defrost mode is in the off state for a time period greater than a second set time period, controlling the first heating element and the second heating element to be off; When the ambient temperature is less than -8°C and the ambient humidity is greater than 70% and less than or equal to 90%, the compressor and the heat exchanger are controlled to operate, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube; When one of the compressors starts to shut down, keeping the first heating element and the second heating element in an on state; When the compressor is in the off state for a time period greater than a second set time period, controlling the first heating element and the second heating element corresponding to the heat exchanger connected to the compressor to be turned off; When the ambient temperature is less than 0° C. and the ambient humidity is greater than 90%, the first heating element is controlled to defrost the water receiving tray, and the second heating element is controlled to defrost the collection tube.

10. The air source heat pump according to claim 9, characterized in that: include: a second water pump, wherein a water inlet end of the second water pump is connected to the storage element, and a water outlet end of the second water pump is connected to the water circulation pipeline; The control device is configured as follows: Get the current water volume in the water circulation pipeline; If the current water volume is less than 60% of the rated capacity, controlling the second water pump to pump water from the storage element; When the pumping time of the second water pump is equal to the set pumping time, controlling the second water pump to stop; When the second water pump stops, the water volume after replenishment in the water circulation pipeline is obtained. If the water volume after replenishment is less than 60%, the second water pump is controlled to pump water from the storage element, and the pumping time of the second water pump is equal to the set pumping time; If the water volume after the water replenishment is lower than 60% for three consecutive times, the control alarm component will issue a water leakage alarm.

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