Chassis assembly and heat pump device

Abstract

The utility model discloses a bottom pan assembly and heat pump equipment belong to household appliance technical field, and bottom pan assembly includes bottom pan body, water level detector and heater, and bottom pan body is equipped with water receiving groove, is equipped with drain and overflow port in water receiving groove, and the height of overflow port is greater than drain and is less than or equal to the height of water receiving groove, through water level detector detection water receiving groove's water level, when the water level that water level detector detects is higher than overflow port, indicates that drain or external drain pipeline possibly exists because freezing jam situation, opens heater to heat water receiving groove at this moment, and the ice melting is accelerated, effectively solve because freezing jam drain problem, reduce because water level is too high and lead to the risk of overflowing from the periphery of bottom pan body.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a chassis assembly and a heat pump device. Background Technology

[0002] Because heat pump water heaters constantly exchange heat with the external environment, the drain holes in the chassis are prone to clogging due to ice buildup, especially in extremely low temperatures. While some technologies address this by creating multiple overflow holes in the chassis structure to drain water when the drain holes become blocked, this doesn't completely solve the problem of ice buildup and still carries the risk of excessive water levels causing overflow from around the chassis. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a chassis assembly that can effectively solve the problem of drainage outlets being blocked by ice, reducing the risk of water overflowing from all sides.

[0004] This utility model also proposes a heat pump device that includes the above-mentioned chassis components.

[0005] According to a first aspect of the present invention, a chassis assembly includes a chassis body, a water level detector, and a heater. The chassis body is provided with a water receiving trough, and the water receiving trough is provided with a drain outlet and an overflow outlet. The height of the overflow outlet is greater than that of the drain outlet and less than or equal to the height of the water receiving trough. The water level detector is disposed on the chassis body and is used to detect the water level in the water receiving trough. The heater is disposed in the water receiving trough and is configured to activate the heating function when the water level detected by the water level detector is higher than that of the overflow outlet.

[0006] The chassis assembly according to the embodiments of the present utility model has at least the following beneficial effects:

[0007] A water receiving trough is installed on the chassis body, with a drain outlet and an overflow outlet inside. The height of the overflow outlet is greater than the drain outlet and less than or equal to the height of the water receiving trough. The drain outlet is used to drain the water in the water receiving trough. When the water level in the water receiving trough rises to the overflow outlet position, the water can be discharged from the overflow outlet. A heater is installed in the water receiving trough. The water level in the water receiving trough is detected by a water level detector. When the water level detected by the water level detector is higher than the overflow outlet, it indicates that the drain outlet or external drainage pipe may be blocked by ice. At this time, the heater is turned on to heat the water receiving trough, accelerate the melting of ice, effectively solve the problem of drain outlet blockage caused by ice, and reduce the risk of overflow from all sides of the chassis body due to excessive water level. This is suitable for heat pump equipment.

[0008] According to some embodiments of the present invention, the bottom wall of the water receiving tank is provided with a through hole, a partition plate and a baffle. The partition plate is disposed in the through hole and extends along the height direction of the chassis body to divide the through hole into a first drain outlet and a second drain outlet. The top of the partition plate is higher than the through hole. The baffle is connected to the partition plate to form an overflow channel. The overflow outlet is formed at the top of the overflow channel. The lower end of the overflow channel is connected to the second drain outlet.

[0009] According to some embodiments of the present invention, the chassis assembly further includes a safety valve and a drain pipe connected together. The safety valve is connected to the chassis body. A fixing part for fixing the drain pipe is provided in the overflow channel. The drain pipe passes through the overflow port into the overflow channel and is connected to the fixing part. The outlet of the drain pipe is connected to the second drain port. The safety valve is used to connect to the water circuit assembly. The safety valve is configured to open when the water pressure of the water circuit assembly exceeds the set threshold of the safety valve to drain water into the drain pipe.

[0010] According to some embodiments of the present invention, the fixing part is a sleeve formed on the inner wall of the overflow channel, the drain pipe is inserted into the sleeve, and the bottom end of the sleeve is provided with a limiting part that abuts against the drain pipe.

[0011] According to some embodiments of the present invention, the bottom wall of the water receiving tank is provided with a concave surface, the through hole is opened in the bottom wall of the concave surface, the bottom wall of the concave surface is provided with a water guiding slope inclined towards the through hole, the water guiding slope is arranged around the periphery of the through hole, and the top of the overflow channel is higher than the highest point of the concave surface.

[0012] According to some embodiments of the present invention, the bottom of the chassis body is provided with a drain connector communicating with the through hole, the drain connector is used to connect a drain pipe, and the partition plate extends along the through hole toward the drain connector.

[0013] According to some embodiments of the present invention, the first drain outlet and the second drain outlet have semi-circular cross-sections along the height direction perpendicular to the chassis body.

[0014] According to some embodiments of the present invention, the water level detector is a water level switch, the chassis body is provided with a bracket for fixing the water level switch, the water level switch has a first detection point and a second detection point, the water level detected at the first detection point is at the same height as the overflow port, and the water level detected at the second detection point is higher than the water level detected at the first detection point.

[0015] According to some embodiments of the present invention, the outer periphery of the chassis body is provided with a rim, the rim is arranged along the circumference of the chassis body, and the detection water level at the second detection point is lower than the minimum height of the rim.

[0016] A heat pump device according to a second aspect of the present invention includes a heat exchanger and a chassis assembly as described in the first aspect of the present invention, wherein the heat exchanger is connected to the chassis body and is located at the water receiving tank.

[0017] The heat pump device according to the embodiments of this utility model has at least the following beneficial effects:

[0018] The heat pump equipment uses the chassis assembly of the first aspect embodiment. The water level in the water tank is detected by the water level detector. When the water level detected by the water level detector is higher than the overflow port, it indicates that the drain port or external drain pipe may be blocked by ice. At this time, the heater is turned on to heat the water tank, accelerate the melting of ice, effectively solve the problem of the drain port being blocked by ice, and reduce the risk of overflow from all sides of the chassis body due to excessive water level.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the assembly of the chassis assembly, evaporator, and compressor according to an embodiment of the present invention;

[0022] Figure 2 This is a top view of the chassis assembly, evaporator, and compressor according to an embodiment of the present invention;

[0023] Figure 3 for Figure 1 Enlarged structural diagram at point A;

[0024] Figure 4 This is a schematic diagram of the chassis body according to an embodiment of the present invention;

[0025] Figure 5 This is a top view of the chassis body according to an embodiment of the present utility model;

[0026] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0027] Figure 7 This is an exploded structural diagram of the chassis body according to an embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram of the assembly of a water level detector and a bracket according to an embodiment of the present invention;

[0029] Figure 9 This is a cross-sectional schematic diagram of a water level detector according to an embodiment of the present invention;

[0030] Figure 10 This is a flowchart of a control method for a heat pump device according to an embodiment of the present invention;

[0031] Figure 11 This is a flowchart of a control method for a heat pump device according to another embodiment of the present invention;

[0032] Figure 12 This is a flowchart of a control method for a heat pump device according to another embodiment of the present invention;

[0033] Figure 13 This is a detailed flowchart of the control method of a heat pump device according to another embodiment of the present invention;

[0034] Figure 14 A flowchart illustrating a specific example of a control method for a heat pump device according to an embodiment of this utility model.

[0035] Icon labels:

[0036] Chassis body 100; water receiving tray 101; first perforation 1011; insulation layer 102; second perforation 1021; support plate 103; water receiving trough 110; concave surface 111; water guiding slope 112; through hole 113; drain outlet 120; first drain outlet 121; second drain outlet 122; overflow outlet 130; overflow channel 140; partition plate 141; baffle 142; pipe sleeve 150; protrusion 151; edging 160; first edging 161; second edging 162;

[0037] Water level detector 200; main body 210; float 220; guide rod 230; first detection point 231; second detection point 232;

[0038] Safety valve 300; drain pipe 310;

[0039] Bracket 400;

[0040] 500mm water inlet pipe;

[0041] Water outlet pipe 600;

[0042] Chassis components 1000;

[0043] Evaporator 2000;

[0044] Compressor 3000. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, left, right, etc., indicating the directional or positional relationship, are based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0048] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0049] This utility model proposes a chassis assembly 1000, which includes a chassis body 100 and is applied to a heat pump device. For ease of understanding, an embodiment of the heat pump device of this utility model is first described.

[0050] The heat pump device of this utility model embodiment includes a housing, a heat pump assembly, a water circuit assembly, and an air duct assembly. The housing has an inner cavity, and the heat pump assembly, water circuit assembly, and air duct assembly are installed in the inner cavity. The housing includes a chassis body 100, side plates, and a top cover. The chassis body 100 and the top cover are respectively connected to the upper and lower ends of the side plates. The chassis body 100 serves as the supporting structure of the housing.

[0051] The heat pump assembly includes a compressor 3000, a first heat exchanger, a second heat exchanger, and a throttling component. The first heat exchanger is located in the middle of the housing and is arranged vertically along the height of the housing. The first heat exchanger divides the inner cavity of the housing into an air inlet cavity and an air outlet cavity. The compressor 3000, the second heat exchanger, the throttling component, and the water circuit assembly are located in the air inlet cavity, and the air duct assembly is located in the air outlet cavity.

[0052] In some embodiments, the first heat exchanger is an evaporator 2000, and the second heat exchanger is a plate heat exchanger. The plate heat exchanger includes a refrigerant flow path and a water flow path. The evaporator 2000, the refrigerant flow path of the plate heat exchanger, the throttling device, and the compressor 3000 are connected to form a refrigerant circulation loop for refrigerant circulation. The water circuit assembly includes a water pump, an inlet pipe 500, an outlet pipe 600, and a valve body. The inlet pipe 500 and the outlet pipe 600 are respectively connected to the water flow path. The water pump can be installed on either the inlet pipe 500 or the outlet pipe 600 to form a water supply line. The air duct assembly includes a fan for drawing outdoor air into the air intake chamber and blowing it towards the evaporator 2000.

[0053] During operation, the refrigerant output from compressor 3000 passes through the plate heat exchanger, where it exchanges heat with water via the refrigerant flow path. After throttling, it enters evaporator 2000, where it exchanges heat with outdoor air before returning to compressor 3000 for the next cycle. A water pump drives chilled water into the water flow path of the plate heat exchanger, allowing the water to exchange heat with the refrigerant. Using the outdoor air as a heat source, heat is extracted through the heat exchange process to produce hot water.

[0054] The heat pump device of this utility model embodiment can provide hot water through the outlet pipe 600 for supplying domestic hot water and heating hot water. Alternatively, the outlet pipe 600 can be connected to a water tank to store the hot water for user use. The inlet of the inlet pipe 500 and the outlet of the outlet pipe 600 are both located on the chassis body 100 of the unit, avoiding their placement in the visible front or side areas and thus preserving the structural appearance.

[0055] Heat pump equipment can be installed indoors, specifically in basements, attics, garages, machine rooms, storage rooms, and other similar locations. This wide range of installation scenarios eliminates the need for outdoor installation, thus avoiding the high installation costs, long installation times, and high installation risks associated with outdoor unit installation.

[0056] Reference Figure 1 and Figure 2 As shown, the evaporator 2000 and compressor 3000 are fixedly mounted on the chassis body 100. The evaporator 2000 is located in the middle of the chassis body 100. The right side of the evaporator 2000 is the air inlet chamber, and the left side is the air outlet chamber. The compressor 3000 is located to the right of the evaporator 2000. Components such as the plate heat exchanger, throttling device, water pump, valve body, and air duct assembly are not shown in the attached drawings.

[0057] The upper surface of the chassis body 100 is recessed downwards to form a water receiving groove 110. The water receiving groove 110 is provided with a drain outlet 120 and an overflow outlet 130. The condensate generated during the operation of the heat pump equipment will flow into the water receiving groove 110 and be discharged through the drain outlet 120. A drain pipe can be installed at the bottom of the chassis body 100. The drain pipe is connected to the drain outlet 120 to drain the water away.

[0058] The overflow outlet 130 is higher than the drain outlet 120. If the drain outlet 120 or the drain pipe becomes blocked, the water level in the receiving tank 110 will rise to the overflow outlet 130, allowing water to drain out and preventing water from overflowing the receiving tank 110. The overflow outlet 130 can share the same drain pipe as the drain outlet 120, or it can have a separate drain pipe connected to the overflow outlet 130. In this embodiment, the height of the overflow outlet 130 is less than or equal to the height of the receiving tank 110, reducing the risk of water overflowing the receiving tank 110. The evaporator 2000 is installed in the receiving tank 110. The evaporator 2000 can be located above the receiving tank 110, or part of the evaporator 2000 can be located inside the receiving tank 110.

[0059] Considering that the evaporator 2000 needs to heat with the outdoor air, the water in the water tank 110 will freeze into ice when encountering a cold outdoor environment, which will block the drain outlet 120. When the water level rises to the overflow outlet 130, the ice will also block the overflow outlet 130, causing the water level to be too high and causing it to overflow from all sides of the chassis body 100, which poses a safety hazard.

[0060] Therefore, in this embodiment of the invention, a water level detector 200 and a heater (not shown in the attached drawings) are provided on the chassis body 100. The heater is located in the water receiving tank 110, and the water level in the water receiving tank 110 is detected by the water level detector 200. The heater and the water level detector 200 are configured to have the following operating modes: When the chassis assembly 1000 is draining normally, the water receiving tank 110 is in a low water level state, the water level detector 200 will not be triggered, and the heater will not work. When the water level detected by the water level detector 200 is higher than the overflow port 130, it indicates that the drain port 120 or the drain pipe may be blocked by ice. At this time, the heating function is activated, that is, the heater is turned on to heat the water. If ice causes the drain port 120 to be blocked, heating the water receiving tank 110 by the heater can accelerate the melting of the ice, thereby quickly draining the water in the water receiving tank 110 and lowering the water level to below the overflow port 130, effectively solving the problem of the drain port 120 being blocked by ice and reducing the risk of overflow from all sides of the chassis body 100 due to excessively high water levels.

[0061] Understandably, once the water level has dropped below the overflow outlet 130 after heating, the heater is shut off. In some embodiments, the heat pump device can control the heater via a controller. For example, when the water level detector 200 detects that the water level exceeds the overflow outlet 130, it sends a signal to the controller, which then activates the heater, heating the water tank 110 for at least 10 minutes to melt the ice. When the water level detector 200 detects that the water level has dropped below the overflow outlet 130, the controller shuts off the heater. This automatic heating mechanism based on water level detection can accurately identify ice blockages and respond quickly, enabling rapid drainage.

[0062] In some embodiments, the heater includes, but is not limited to, a heating wire, a heating tape, a heating film, a heating element, or a heating tube. Taking a heating tape as an example, the heating tape can be coiled inside the water receiving tank 110 by a fixing member, and the water receiving tank 110 is heated by the heating tape to increase the temperature inside the water receiving tank 110, thereby reducing the probability of condensate freezing and preventing condensate from freezing and blocking the drain outlet 120.

[0063] Reference Figure 4 and Figure 5 As shown, in some embodiments, the structure of the drain outlet 120 and the overflow outlet 130 is optimized so that the drain outlet 120 and the overflow outlet 130 can share the same drainage pipe.

[0064] Specifically, the bottom wall of the water receiving tank 110 is provided with a through hole 113, a partition plate 141 and a baffle 142. The through hole 113 is a circular hole. The partition plate 141 is disposed inside the through hole 113 and extends along the height direction of the chassis body 100. The upper end of the partition plate 141 is higher than the through hole 113, so that the partition plate 141 divides the through hole 113 into a first drain outlet 121 and a second drain outlet 122. The first drain outlet 121 and the second drain outlet 122 are respectively located on both sides of the partition plate 141. The two ends of the partition plate 141 are respectively connected to the inner wall of the through hole 113. The portion of the partition plate 141 protruding from the through hole 113 is connected to the baffle 142. The partition plate 141 and the baffle 142 surround each other to form an overflow channel 140. The opening at the top of the overflow channel 140 is an overflow port 130. The lower end of the overflow channel 140 is connected to the second drain port 122, so that the height of the overflow port 130 is greater than the height of the first drain port 121. The height of the overflow channel 140 does not exceed the height of the water receiving tank 110. The first drain port 121 is the drain port 120 of the above embodiment, so that the drain port 120 and the overflow port 130 share the same through hole 113 for drainage.

[0065] The partition plate 141 is a straight plate, and the baffle plate 142 is an arc-shaped plate. The bottom end of the baffle plate 142 is connected to the bottom wall of the water receiving tank 110. The baffle plate 142 is set along the periphery of the second drain outlet 122, so that the baffle plate 142 can be connected to the partition plate 141 and surround the second drain outlet 122. Since the drain outlet 120 and the overflow outlet 130 share the same through hole 113, a drainage pipe can be set at the bottom of the chassis body 100 to connect with the through hole 113, making the structure simpler and more reasonable, and easily adaptable to indoor and outdoor installation environments.

[0066] Reference Figure 5 and Figure 6 As shown, in some embodiments, the cross-sections of the first drain outlet 121 and the second drain outlet 122 are semi-circular along the height direction perpendicular to the chassis body 100. That is, the circular through hole 113 is divided into two semi-circular holes by the partition plate 141, which improves manufacturability, reduces processing costs, and facilitates matching with external drainage pipes. In the embodiments, the size requirements of the through hole 113 can be selected according to the drainage requirements of the drain outlet 120 and the overflow outlet 130 to ensure that the drain outlet 120 and the overflow outlet 130 can drain smoothly.

[0067] Of course, the shape of the through hole 113 is not limited to a circle; it can also be square or other polygonal shapes. For example, a square through hole 113 can be divided into two rectangular holes by a partition plate 141. In some embodiments, the cross-section of the overflow channel 140 is not limited to a semi-circular shape; it can also be selected as square, elliptical, etc., according to actual application requirements.

[0068] In some embodiments, the through hole 113, the partition plate 141, the baffle plate 142, and the chassis body 100 are manufactured using an integral molding process, resulting in a more reliable structure. Alternatively, the partition plate 141 and the baffle plate 142 can be integrally formed into a structural component, which is then installed onto the chassis body 100, thus both separating the through hole 113 and forming the overflow channel 140.

[0069] The bottom of the chassis body 100 is provided with a drain connector that communicates with the through hole 113. The drain connector is cylindrical and protrudes from the bottom surface of the chassis body 100. The drain pipe 310 sleeve 150 can be directly sleeved on the drain connector. The partition plate 141 extends along the through hole 113 toward the drain connector, so that the drain connector is divided into two flow channels. The two flow channels are respectively connected to the first drain port 121 and the second drain port 122, and both flow channels are connected to the drain pipe, ensuring that the condensate discharged from the first drain port 121 or the second drain port 122 can be discharged along the drain pipe, which also improves the sealing of the connection between the chassis body 100 and the drain pipe and reduces the risk of water leakage.

[0070] Under normal operating conditions, water from the receiving tank 110 drains through the first drain outlet 121. When the receiving tank 110 is at a low water level, the water level detector 200 is not triggered, and the heater does not operate. When ice forms in the receiving tank 110, blocking the first drain outlet 121, and the water level rises to the overflow outlet 130, water flows through the overflow outlet 130 into the overflow channel 140 and is finally discharged through the second drain outlet 122. At this point, the water level detector 200 is triggered, sending a signal to the controller, which then activates the heater to heat the receiving tank 110 to melt the ice. When ice blocks the drain pipe, heating the water in the receiving tank 110 allows hot water to enter the drain pipe, thus accelerating the melting of ice and effectively solving the problem of ice blocking the drain outlet 120 or external drain pipes.

[0071] The bottom wall of the water receiving tray 101 has a downwardly recessed surface 111, and a through hole 113 is located on the bottom wall of the concave surface 111. The bottom wall of the concave surface 111 also has a water-guiding slope 112 inclined towards the through hole 113. Water in the water receiving tank 110 can flow into the concave surface 111 and then along the water-guiding slope 112 to the first drain outlet 121. The concave surface 111 allows condensate to quickly and directionally converge, and in conjunction with the water-guiding slope 112, it improves drainage efficiency and reduces the risk of ice formation in the water receiving tank 110. The water-guiding slope 112 surrounds the periphery of the through hole 113. Since the overflow channel 140 surrounds the second drain outlet 122, part of the water-guiding slope 112 is inclined towards the outside of the overflow channel 140. When water flows along the guide slope to the outer periphery of the overflow channel 140, it flows along the outer periphery of the overflow channel 140 to the first drain outlet 121.

[0072] In some embodiments, the inclination angle of the guide slope 112 is 3°-10°, preferably 5°, to ensure that the water flow quickly converges along the guide slope 112 to the first drain outlet 121 and is then discharged through the drain pipe. It should be noted that the top of the overflow channel 140 is higher than the highest point of the concave surface 111, making the height difference between the overflow outlet 130 and the first drain outlet 121 more reasonable, and avoiding the overflow outlet 130 being too low, which could easily cause frequent start-ups of the heater.

[0073] Reference Figure 1 and Figure 2 As shown, the chassis assembly 1000 also includes a safety valve 300 and a drain pipe 310. The inlet pipe 500 and the outlet pipe 600 are connected to the chassis body 100. The safety valve 300 is connected to the inlet pipe 500. One end of the drain pipe 310 is connected to the drain end of the safety valve 300, and the other end is inserted into the overflow channel 140 through the overflow port 130.

[0074] Safety valve 300 is a normally closed valve. Safety valve 300 has a set threshold. Under normal operating conditions, when the operating pressure of the water circuit component is less than the set threshold, safety valve 300 remains closed. Taking a set threshold of 0.5MPa as an example, when the operating pressure of the water circuit component is greater than or equal to 0.5MPa, safety valve 300 opens, and high-pressure water is introduced into overflow channel 140 through drain pipe 310 to achieve the purpose of pressure relief, thereby controlling the pressure of the water circuit component to not exceed the set threshold.

[0075] Considering that when the drainage pipe is severely frozen or blocked by foreign objects, heating it with a heater cannot quickly solve the blockage problem, this embodiment of the utility model uses a safety valve 300 to discharge high-pressure water. The high-pressure water impacts the second drain outlet 122 and the drainage pipe to break through the blockage and clear the drainage pipe.

[0076] Reference Figure 3 As shown, a fixing part for fixing the drain pipe 310 is provided in the overflow channel 140. After the drain pipe 310 passes through the overflow channel 140, it is connected to the fixing part, so that the outlet of the drain pipe 310 is opposite to the second drain outlet 122, ensuring that the sprayed high-pressure water can directly hit the second drain outlet 122, resulting in a better impact effect. By fixing the drain pipe 310 with the fixing part, it can be ensured that the safety valve 300 can be stably inserted into the overflow channel 140, preventing the drain pipe 310 from shifting due to excessive water pressure.

[0077] Reference Figure 6 As shown, in some embodiments, the drain pipe 310 is a flexible hose structure, and the fixing part can be a sleeve 150. The sleeve 150 can be formed on the inner wall of the overflow channel 140 by an integral molding process. The drain pipe 310 can be directly inserted into the sleeve 150 for fixing, and the fastening effect can be achieved by interference fit.

[0078] To prevent the drain pipe 310 from protruding from the sleeve, a limiting part is provided at the bottom end of the sleeve 150. This limiting part includes two protrusions 151, which are symmetrically formed on the inner wall of the sleeve. The protrusions 151 limit the drain pipe 310, ensuring that the drain pipe 310 can be accurately fixed in the overflow channel 140, and that the protrusions 151 do not affect the drainage of the drain pipe 310, ensuring that the high-pressure water sprayed from the safety valve 300 can be discharged smoothly. In some embodiments, the protrusions 151 can be formed into ribs along the circumference of the sleeve 150 to provide a more reliable limiting structure. The limiting part is not limited to the protrusions 151, but can also be a mesh, a baffle, or other structures.

[0079] This is just an example. The fixing part is not limited to the pipe sleeve 150. It can also be a pipe clamp or other fastener that can fix the drain pipe 310, so as to ensure that the drain pipe 310 can be fixed in the overflow channel 140.

[0080] Reference Figure 7 As shown, the chassis body 100 includes a water receiving tray 101, a support plate 103, and an insulation layer 102. The water receiving tray 101, the insulation layer 102, and the support plate 103 are arranged sequentially from top to bottom, that is, the water receiving tray 101 is located on the upper side of the support plate 103, and the insulation layer 102 is located between the water receiving tray 101 and the support plate 103. The through hole 113, the partition plate 141, and the baffle 142 are integrally formed with the support plate 103. The water receiving tray 101 is provided with a first through hole 1011, and the insulation layer 102 is provided with a second through hole 1021. Both the first through hole 1011 and the second through hole 1021 are connected to the through hole 113. The partition plate 141 and the baffle 142 pass through the second through hole 1021 and the first through hole 1011 sequentially from bottom to top, and the partition plate 141 and the baffle 142 protrude from the upper surface of the water receiving tray 101.

[0081] In some embodiments, the chassis assembly 1000 includes a plurality of bolts, which are used to fix the water receiving tray 101, the insulation layer 102 and the support plate 103, so that the water receiving tray 101 and the support plate 103 clamp the insulation layer 102.

[0082] The water receiving tray 101 is made of metal, the support plate 103 is made of plastic, and the insulation layer 102 is made of foam. Specifically, the water receiving trough 110 and the concave surface 111 are formed by an integral molding process. The upper surface of the insulation layer 102 is adapted to the lower end surface of the water receiving tray 101, and the lower surface of the insulation layer 102 is adapted to the upper end surface of the support plate 103. The insulation layer 102 separates the water receiving tray 101 from the support plate 103, which can prevent the transfer of heat between the water receiving tray 101 and the support plate 103 and reduce the generation of condensate.

[0083] Reference Figure 7 As shown, the outer periphery of the chassis body 100 is provided with a surrounding edge 160, specifically including a first surrounding edge 161 and a second surrounding edge 162. The outer periphery of the water receiving tray 101 is provided with the first surrounding edge 161, and the outer periphery of the support plate 103 is provided with the second surrounding edge 162. The second surrounding edge 162 and the upper surface of the support plate 103 define a receiving groove, and both the water receiving tray 101 and the insulation layer 102 are disposed in the receiving groove. The outer periphery of the insulation layer 102 is provided with a protruding edge, which can separate the first surrounding edge 161 and the second surrounding edge 162 to prevent the water receiving tray 101 from contacting the support plate 103. It should be noted that in this embodiment, both the first surrounding edge 161 and the second surrounding edge 162 are higher than the water receiving groove 110.

[0084] Reference Figure 8As shown, the water level detector 200 is a water level switch with a first detection point 231 and a second detection point 232. The water level detected at the first detection point 231 is at the same height as the overflow port 130, and the water level detected at the second detection point 232 is higher than the water level detected at the first detection point 231. In this embodiment, the chassis assembly 1000 also includes a bracket 400, which is used to fix the water level switch to the chassis body 100 to ensure that the installation structure of the water level switch is stable and reliable, and to ensure that the first detection point 231 and the second detection point 232 have high accuracy.

[0085] Reference Figure 9 As shown, the water level switch in this embodiment is specifically a float-type water level switch. The water level switch includes a main body 210 and a float 220. The float 220 is provided with a guide rod 230 connected to the main body 210. The guide rod 230 is provided with a first detection point 231 and a second detection point 232. Since the float 220 can float up and down with the water level, it drives the guide rod 230 to move relative to the main body 210. The higher the water level, the greater the rise of the float 220. The second detection point 232 is located close to the float 220, and the first detection point 231 is located above the second detection point 232. Therefore, during the rise of the float 220, the first detection point 231 and the second detection point 232 will be triggered sequentially.

[0086] Both the first detection point 231 and the second detection point 232 are induction magnetic coils. The main body 210 is provided with a magnetic sensing element. The magnetic sensing element detects the induction magnetic coils to determine whether the first detection point 231 and the second detection point 232 have been reached. In some embodiments, the detection water level at the second detection point 232 is lower than the minimum height of the first enclosure 161 or the second enclosure 162. The detection water level at the second detection point 232 can be understood as the warning water level of the entire machine. The warning water level can be higher than the water receiving tank 110 and lower than the smaller of the heights of the first enclosure 161 and the second enclosure 162.

[0087] When the water level rises, the float 220 floats due to buoyancy and is driven by the guide rod 230. When the water level reaches the overflow port 130, the magnetic element senses the first detection point 231, triggering the first water level signal. This indicates that the drain port 120 or the external drainage pipe is blocked, and the heater can be turned on to heat and defrost. When the water level exceeds the overflow port 130 and reaches the warning water level, the magnetic element senses the second detection point 232, triggering the second water level signal. This indicates that the drain port 120, the overflow port 130, or the external drainage pipe is blocked, posing a safety hazard to the internal components of the machine. At this time, the safety valve 300 needs to be opened to spray high-pressure water to clear the blockage. This effectively reduces the risk of water being discharged from the sides of the chassis body 100, easily handling indoor and outdoor installation environments and reducing the safety hazards of heat pump equipment.

[0088] Combination Figure 1 and Figure 2 It is understood that the chassis body 100 is provided with a bracket 400 for fixing the water level switch. The bottom of the bracket 400 is fixedly connected to the upper surface of the chassis body 100 and near the water receiving tank 110, specifically by bolts, rivets or other fasteners. The upper end of the water level switch is connected to the bracket 400, and the float 220 is located in the water receiving tank 110, ensuring that the float 220 can move up and down with the water level in the water receiving tank 110.

[0089] This utility model embodiment also provides a control method for a heat pump device, applicable to the heat pump device of the above embodiments. The specific solution of the heat pump device can refer to the structure shown in the foregoing embodiments. The control method of the heat pump device is described below with specific examples.

[0090] Reference Figure 10 As shown, the control method of the heat pump equipment in this embodiment of the present invention includes, but is not limited to, the following steps:

[0091] Step S100: Obtain the water level detected by the water level detector 200;

[0092] Step S200: When the water level detected by the water level detector 200 is higher than the overflow outlet 130, the heater is turned on to heat the water.

[0093] Combination Figure 1 It is understood that the condensate produced when the heat pump equipment is working will collect in the water collection tank 110 of the chassis body 100 and be drained away through the drain outlet 120. When the water collection tank 110 or the drain pipe freezes and the condensate cannot be drained, the water level in the water collection tank 110 will rise.

[0094] In step S100, the water level in the water receiving tank 110 is monitored in real time using the water level detector 200, such as... Figure 8 and Figure 9 As shown, the water level detector 200 is specifically a water level switch. The water level switch has a first detection point 231 and a second detection point 232. The water level detected at the first detection point 231 is at the same height as the overflow port 130. The water level detected at the second detection point 232 is higher than the water level detected at the first detection point 231. The water level detected at the second detection point 232 is the warning water level of the heat pump equipment. When the water level exceeds the warning water level, the water flow may overflow the chassis body 100 or affect the normal operation of the functional components of the heat pump equipment.

[0095] In step S200, when the water level is higher than the overflow port 130, the water level detector 200 triggers the first detection point 231, and sends a first water level signal to the controller. The controller determines that the drain port 120 or the external drainage pipe is blocked based on the first water level signal, and controls the heater to be turned on to heat up, so as to achieve the effect of de-icing, thereby restoring the drainage of the water tank 110, effectively solving the problem of the drain port 120 being blocked by ice, and reducing the risk of overflow from all sides of the chassis body 100 due to excessively high water level.

[0096] Of course, when the water level does not reach the overflow port 130, or when the water level drops below the overflow port 130, the chassis assembly 1000 returns to the normal drainage state. At this time, the water tank 110 is in a low water level state, the water level detector 200 does not trigger the first detection point 231, and the heater does not work.

[0097] It should be noted that since the heating process takes a certain amount of time to achieve the desired melting effect, after controlling the heater to start heating, it is necessary to check again whether the water level is still higher than the overflow outlet 130 after a preset time. If the water level is still higher than the overflow outlet 130 after heating, it indicates that the drainage pipe is severely frozen or blocked by foreign objects. In this case, turning on the heater will not quickly solve the blockage problem, and the water level will continue to rise.

[0098] Reference Figure 11 As shown, based on this, the control method for heat pump control in this embodiment of the present invention further includes the following steps:

[0099] Step S110: Obtain the water level detected by the water level detector 200;

[0100] Step S210: When the water level detected by the water level detector 200 is higher than the first detection point 231, the heater is turned on to heat the water.

[0101] In step S300, when the water level detected by the water level detector 200 is higher than the second detection point 232, the water pressure of the water circuit component is increased to exceed the set threshold of the safety valve 300, so that the safety valve 300 opens and drains water through the drain pipe 310.

[0102] It is understandable that after the water tank 110 has been heated for a preset time, the current water level is repeatedly detected to determine whether the current water level exceeds the first detection point 231. The preset time can be 5 minutes, 8 minutes, 10 minutes, etc.

[0103] When the water level exceeds the overflow outlet 130 and reaches the warning level, the water level detector 200 triggers the second detection point 232, sending a second water level signal to the controller. The controller determines, based on the second water level signal, that the drain outlet 120, overflow outlet 130, or external drainage pipe is blocked, and controls the increase of water pressure in the water circuit components. When the water pressure in the water circuit components exceeds the set threshold of the safety valve 300, the safety valve 300 automatically opens and sprays high-pressure water. The high-pressure water is introduced into the overflow channel 140 through the drain pipe 310, thereby flushing the second drain outlet 122 and the drainage pipe with high-pressure water, which can remove foreign objects or quickly defrost, effectively solving the problem of blockage in the drain outlet 120 or external drainage pipe.

[0104] In other words, the de-icing method of this utility model embodiment includes electric heating and high-pressure water discharge through safety valve 300, and the method for removing foreign objects from the blockage is high-pressure water discharge through safety valve 300.

[0105] It should be noted that when the water level exceeds the first detection point 231 but has not reached the second detection point 232, the controller keeps the heater in heating mode and issues a warning to the user. Specifically, the heat pump equipment also includes a wired controller, which can issue warning messages to make the heat pump equipment display an alarm status, reminding the user to perform maintenance.

[0106] Reference Figure 12 As shown, in some embodiments, step S300 specifically includes the following steps:

[0107] In step S310, when the water level detected by the water level detector 200 is higher than the second detection point 232, the compressor 3000 and the fan are stopped, the valve body is closed, and the water pump is kept running so that the water pressure of the water circuit components exceeds the set threshold of the safety valve 300.

[0108] Under normal operation, the valve body is open, and under the drive of the water pump, cold water enters the water flow pipeline of the plate heat exchanger through the inlet pipe 500, allowing heat exchange between the water and the refrigerant. Hot water is discharged through the outlet pipe 600, thus producing hot water. Since a water level exceeding the warning level indicates a safety hazard in the heat pump operation, when the water level is higher than the second detection point 232, the heat pump is controlled to stop producing hot water; that is, the compressor 3000 and the fan stop working.

[0109] In order for the safety valve 300 to spray high-pressure water, the water pump runs continuously, and the outlet is closed through the valve body, which increases the water pressure of the water circuit components, so that the water pressure exceeds the set threshold of the safety valve 300. At this time, high-pressure water is sprayed out from the drain pipe 310 of the safety valve 300, directly impacting the second drain port 122 and the drain pipe.

[0110] Reference Figure 13As shown, in some embodiments, the control method for the heat pump device further includes the following steps:

[0111] Step S400: When the water level detected by the water level detector 200 is higher than the second detection point 232, the compressor 3000 and the fan are repeatedly stopped, the valve body is closed, and the water pump is controlled to run continuously until the water level is lower than the first detection point 231. Otherwise, after the preset time is reached, the heat pump equipment is controlled to be powered off and stopped.

[0112] In step S500, when the water level detected by the water level detector 200 drops from the second detection point 232 to below the first detection point 231, the heater is shut down, the compressor 3000 and the fan are started, and the normal working state of the valve body and the water pump is restored.

[0113] In step S600, when the water level detected by the water level detector 200 is lower than the second detection point 232 and higher than the first detection point 231, the heat pump equipment is controlled to issue a warning.

[0114] Reference Figure 14 As shown, the logic of the control method is explained below with a specific example. When the water level switch triggers the first detection point 231, it indicates that the water level exceeds the overflow port 130, meaning that the drain port 120 or the external drainage pipe is blocked, or the water tank 110 is frozen or blocked by foreign objects. At this time, the controller turns on the heater to heat and enters the defrosting mode. After heating for 5 minutes, it checks again whether the water level exceeds the overflow port 130. If the water level does not exceed the overflow port 130, the controller turns off the heater and enters the normal state. If the first detection point 231 is still in the triggered state, the controller will enter the judgment state of the second detection point 232, that is, to judge whether the water level exceeds the warning water level. If the second detection point 232 is not in the triggered state, the machine will display an alarm state, prompting the user to perform maintenance, and at the same time, it will re-enter the trigger detection of the first detection point 231 to judge whether the water level exceeds the overflow port 130.

[0115] If the second detection point 232 is in the triggered state, it means that the water level exceeds the warning level, which means that the drain outlet 120, overflow outlet 130 or external drainage pipe is blocked. At this time, the fan and compressor 3000 will shut down, while the water pump will continue to run. By controlling the valve body to close the outlet, the pressure of the water circuit components will increase, thereby exceeding the set threshold of the safety valve 300. At this time, high-pressure water will spray out from the drain pipe 310 of the safety valve 300, directly impacting the drainage pipe. This process needs to be repeated 5 times or more to break the blockage.

[0116] The machine then checks again whether the water level exceeds the overflow outlet 130. If it does not exceed the overflow outlet 130, the heater is shut off, and the machine continues to operate normally. If the water level exceeds the overflow outlet 130, the machine enters the judgment state of the second detection point 232. If the water level does not exceed the warning level, the machine will display an alarm and simultaneously enter the trigger detection of the first detection point 231. If the second detection point 232 is in the trigger state, it means that the water level exceeds the warning level, the drain outlet 120, the overflow outlet 130, or the external drainage pipe is blocked, and the situation has not improved. At this time, the fan and compressor 3000 will shut down, and the water pump will continue to run for a period of time. Afterward, the machine enters the judgment state of the second detection point 232. If the second detection point 232 is not in the trigger state, the machine will display an alarm and simultaneously enter the trigger detection of the first detection point 231. If the second detection point 232 is still in the trigger state, the machine will power off and stop, and will continuously issue an alarm, indicating to the user that the machine is blocked and that a repairman needs to be notified for emergency on-site repair.

[0117] In addition, this utility model embodiment also provides a controller, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the control method of the heat pump device as described in the above embodiment.

[0118] Taking the example of a controller where the control processor and memory can be connected via a bus, the memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include memory remotely located relative to the control processor, and these remote memories can be connected to the controller via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0119] The non-transient software program and instructions required to implement the control method of the above embodiments are stored in memory. When executed by a processor, the control method described above is executed, for example, the control method described above is executed. Figure 10 Method steps S100 to S200 Figure 11 Method steps S110 to S300, Figure 12 Method steps S110 to S310, Figure 13 The method steps S400 to S600, etc.

[0120] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0121] Furthermore, this utility model embodiment includes the controller described in the above embodiment, and the controller executes the control method of the heat pump device described in the above embodiment.

[0122] Furthermore, this embodiment of the invention also provides a computer-readable storage medium storing computer-executable instructions for executing the control method of the heat pump device described above. For example, the instructions can be executed by a processor, causing one or more processors to execute the control method described in the above method embodiment, for example, to perform the above-described control method. Figure 10 Method steps S100 to S200 Figure 11 Method steps S110 to S300, Figure 12 Method steps S110 to S310, Figure 13 The method steps S400 to S600, etc.

[0123] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network nodes. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0124] Those skilled in the art will understand that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer-readable storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer-readable storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0125] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A chassis assembly, characterized in that, include: The chassis body is provided with a water receiving trough, and the water receiving trough is provided with a drain outlet and an overflow outlet. The height of the overflow outlet is greater than that of the drain outlet and less than or equal to the height of the water receiving trough. A water level detector is installed on the chassis body, and the water level detector is used to detect the water level in the water receiving tank. A heater is provided in the water receiving tank, and the heater is configured to activate the heating function when the water level detected by the water level detector is higher than the overflow port.

2. The chassis assembly according to claim 1, characterized in that, The bottom wall of the water receiving tank is provided with a through hole, a partition plate and a baffle. The partition plate is disposed in the through hole and extends along the height direction of the chassis body to divide the through hole into a first drain outlet and a second drain outlet. The top of the partition plate is higher than the through hole. The baffle is connected to the partition plate to form an overflow channel. The overflow outlet is formed at the top of the overflow channel. The lower end of the overflow channel is connected to the second drain outlet.

3. The chassis assembly according to claim 2, characterized in that, The chassis assembly also includes a safety valve and a drain pipe connected to each other. The safety valve is connected to the chassis body. The overflow channel is provided with a fixing part for fixing the drain pipe. The drain pipe passes through the overflow port into the overflow channel and is connected to the fixing part. The outlet of the drain pipe is connected to the second drain port. The safety valve is used to connect to the water circuit assembly. The safety valve is configured to open when the water pressure of the water circuit assembly exceeds the set threshold of the safety valve to drain water into the drain pipe.

4. The chassis assembly according to claim 3, characterized in that, The fixing part is a sleeve formed on the inner wall of the overflow channel, the drain pipe is inserted into the sleeve, and the bottom end of the sleeve is provided with a limiting part that abuts against the drain pipe.

5. The chassis assembly according to claim 2, characterized in that, The bottom wall of the water receiving tank has a concave surface, and the through hole is opened in the bottom wall of the concave surface. The bottom wall of the concave surface has a water guiding slope that is inclined toward the through hole. The water guiding slope is arranged around the periphery of the through hole, and the top of the overflow channel is higher than the highest point of the concave surface.

6. The chassis assembly according to claim 2, characterized in that, The bottom of the chassis body is provided with a drain connector that communicates with the through hole. The drain connector is used to connect a drain pipe. The partition plate extends along the through hole toward the drain connector.

7. The chassis assembly according to claim 2, characterized in that, The first drain outlet and the second drain outlet have semi-circular cross-sections along the height direction perpendicular to the chassis body.

8. The chassis assembly according to claim 1, characterized in that, The water level detector is a water level switch. The chassis body is provided with a bracket for fixing the water level switch. The water level switch has a first detection point and a second detection point. The water level detected at the first detection point is at the same height as the overflow port, and the water level detected at the second detection point is higher than the water level detected at the first detection point.

9. The chassis assembly according to claim 8, characterized in that, The chassis body has a surrounding edge along its outer periphery, and the surrounding edge is arranged circumferentially along the chassis body. The detection water level at the second detection point is lower than the minimum height of the surrounding edge.

10. A heat pump device, characterized in that, It includes a heat exchanger and a chassis assembly as described in any one of claims 1 to 9, wherein the heat exchanger is connected to the chassis body and located at the water inlet.

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