A dual-source heat pump

Abstract

This utility model discloses a dual-source heat pump, belonging to the technical field of dual-source heat pumps. A dual-source heat pump includes fins fixed to both sides of the dual-source heat pump unit and two fans installed on the upper surface of the unit. The top of the dual-source heat pump unit forms a cavity through the two fins and side walls. The sealing assembly includes multiple guide vanes rotating at the top of the cavity via connecting shafts, which seal the fan ventilation holes. This utility model uses a solenoid valve to introduce a portion of the high-temperature gas about to enter the condenser into the air duct. Multiple hoses then allow the high-temperature gas to be ejected through the outlet pipe, heating the fins and evaporating the frost on the fin surface. Simultaneously, the sealing assembly seals the fan ventilation holes, preventing heat dissipation and concentrating heat inside the cavity to continuously heat the fins and prevent re-frost formation.

Description

Technical Field

[0001] This utility model relates to the field of dual-source heat pump technology, and in particular to a dual-source heat pump. Background Technology

[0002] A heat pump unit is a device that transfers heat energy from a low-temperature heat source to a high-temperature heat source. Heat pump technology is a relatively mature technology, and the "source" is the key to its success. Commonly used sources include air, water (groundwater, surface water, rivers, lakes, etc.), and soil; another type is heat discharged from domestic and industrial processes, which has a higher temperature, such as exhaust gas and wastewater. Heat pump technology utilizes these energy sources. Based on the heat source type, heat pumps can be classified as: air source heat pumps, ground source heat pumps, water source heat pumps, and wastewater source heat pumps.

[0003] When the air-source heating mode is activated, the finned tube heat exchanger of the outdoor unit acts as an evaporator. The low-temperature, low-pressure liquid refrigerant inside evaporates and absorbs heat from the air, causing the fin temperature to drop below zero degrees Celsius. Moisture in the air easily frosts on the fin surface, forming an insulation layer that severely hinders heat transfer between the air and the heat exchanger. Furthermore, the frost layer blocks the channels between the fins, resulting in a decrease in airflow and further deterioration of the heat exchange capacity.

[0004] Existing defrosting methods are mostly reverse cycle defrosting, which uses a four-way valve to switch the outdoor unit into a condenser, allowing the high-temperature refrigerant to melt the frost layer. However, this method stops heating the indoor unit during defrosting, causing the indoor temperature to drop. Therefore, this application proposes a dual-source heat pump that uses part of the heat from the water source to defrost the fins, thus avoiding the phenomenon of stopping indoor heating. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the prior art by proposing a dual-source heat pump.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dual-source heat pump includes fins fixed on both sides of the dual-source heat pump unit and two fans installed on the upper surface of the dual-source heat pump unit. The top of the dual-source heat pump unit forms a cavity through the two fins and the side wall. A defrosting assembly for defrosting the two sets of fins is provided inside the cavity. A sealing assembly for sealing the fan vents is provided at the top of the cavity. The sealing assembly includes multiple air guide vanes that rotate at the top of the cavity through a connecting shaft. The air guide vanes are used to seal the fan vents.

[0008] In some embodiments, the defrosting assembly includes a plurality of air outlet pipes disposed inside the fins and an air duct connected to the air inlet of the condenser. The plurality of air outlet pipes are respectively connected to the air duct via flexible hoses. The plurality of air outlet pipes rotate inside the cavity and swing synchronously via a swing assembly.

[0009] In some embodiments, the swing assembly includes a support frame fixed to the bottom of the cavity and swing frames symmetrically arranged on both sides of the support frame, and a plurality of air outlet pipes located in the middle are respectively fixed with swing rods that cooperate with the swing frames.

[0010] In some embodiments, the swing frame is provided with multiple grooves in the direction of the air outlet duct, and the swing rod is T-shaped and slides inside the grooves.

[0011] In some embodiments, two guide vanes passing through the surface of the connecting shaft form a group, and the two guide vanes respectively seal the ventilation holes of the two fans. Multiple groups of guide vanes are evenly spaced and arranged in a cluster. Two clusters of guide vanes are symmetrically arranged at the top of the cavity, and one cluster of guide vanes seals half of the fan ventilation hole.

[0012] In some embodiments, the two clusters of guide vanes rotate in opposite directions via a transmission assembly, which includes gears fixed to the middle of multiple connecting shafts and a rack that meshes synchronously with the multiple gears. The rack slides on the surface of multiple mounting blocks, and the multiple mounting blocks are fixed to the top of the cavity.

[0013] In some embodiments, there are two sets of racks that mesh with multiple gears respectively, the two racks are staggered, and the two racks slide synchronously in opposite directions through a reverse sliding assembly.

[0014] In some embodiments, the reverse sliding assembly includes a traction rod rotating at the top of the cavity and guide rods respectively fixed to opposite ends of two racks. The traction rod has two through slots symmetrically formed on its surface, and the two guide rods slide on the inner walls of the two through slots respectively.

[0015] Compared with the prior art, the present invention provides a dual-source heat pump with the following beneficial effects.

[0016] 1. In this utility model, a portion of the high-temperature gas that is about to enter the condenser is introduced into the air duct through the opening of the solenoid valve. The high-temperature gas is sprayed out through the air outlet pipe through multiple hoses, which heats the fins and causes the frost on the fin surface to evaporate. At the same time, the ventilation holes of the fan are sealed by the sealing component to prevent heat loss and to make the heat accumulate inside the cavity, continuously heating the fins and preventing frost from forming again.

[0017] 2. This utility model, by setting up a swing assembly, uses an electric push rod to drive the swing frame to slide up and down repeatedly, causing the swing frame to drive the swing rod to swing up and down, which in turn drives multiple air outlet pipes to rotate, thereby continuously adjusting the air outlet direction and uniformly delivering high-temperature air to the fins for defrosting.

[0018] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the axial structure of this utility model.

[0020] Figure 2 This is a side view sectional structural diagram of the present invention.

[0021] Figure 3 This is a schematic diagram of the swing component in this utility model.

[0022] Figure 4 This is a schematic diagram of the swing frame in this utility model.

[0023] Figure 5 This is a rear cross-sectional view of the present invention.

[0024] Figure 6 This is a bottom-view cross-sectional structural diagram of the present invention.

[0025] Figure 7 This is a bottom view of the transmission component in this utility model.

[0026] Figure 8 This is a side view of the transmission component in this utility model.

[0027] Figure 9 This utility model Figure 6 Enlarged structural diagram at point A in the middle.

[0028] In the picture:

[0029] 1. Dual-source heat pump unit; 101. Fins; 102. Fan; 103. Condenser; 2. Defrosting assembly; 201. Air outlet duct; 202. Air duct; 3. Swing assembly; 301. Support frame; 302. Swing frame; 3021. Groove; 3022. Clearance groove; 303. Swing rod; 304. Bidirectional telescopic rod; 305. Electric push rod; 306. Synchronization assembly; 3061. Synchronization pulley; 3062. Synchronization belt; 4. Enclosure assembly; 401. Connecting shaft; 402. Air guide vane; 5. Transmission assembly; 501. Gear; 502. Rack; 503. Mounting block; 504. Reverse sliding assembly; 5041. Traction rod; 5042. Guide rod; 5043. Drive motor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figure 1-9 A dual-source heat pump includes fins 101 fixed on both sides of a dual-source heat pump unit 1 and two fans 102 installed on the upper surface of the dual-source heat pump unit 1. The bottom of the dual-source heat pump unit 1 is equipped with a compressor, condenser 103, expansion valve, heat exchanger and other structures for dual-source heat exchange, which are existing technologies and will not be described in detail. The top of the dual-source heat pump unit 1 forms a cavity through the two fins 101 and the side wall. The fans 102 deliver air into the cavity, and the air flows out through the fins 101, so that the fins 101 are in full contact with the air for heat absorption. The dual-source heat pump unit 1 is equipped with a defrosting assembly 2 for defrosting the two sets of fins 101. The defrosting assembly 2 is located inside the cavity, and a sealing assembly 4 is provided at the top of the cavity for sealing the ventilation openings of the fans 102.

[0032] The defrosting assembly 2 includes multiple air outlet pipes 201 disposed inside the fins 101 and an air duct 202 connected to the air inlet of the condenser 103. The multiple air outlet pipes 201 are arranged parallel to the fins 101. The multiple air outlet pipes 201 are connected to the air duct 202 through flexible hoses. The multiple air outlet pipes 201 rotate inside the cavity. The multiple air outlet pipes 201 swing synchronously through the swing assembly 3. A solenoid valve is provided at the lower end of the air duct 202.

[0033] Understandably, in the existing technology, when the air source mode is in heating mode, the surface of the fins 101 is prone to frost formation. In the water source heating mode, the high-temperature gas discharged from the compressor exhaust port passes through the high-pressure switch and enters the four-way valve port. Then, it is discharged from the four-way valve port and enters the interior of the condenser 103. The high-temperature and high-pressure liquid in the condenser 103 passes through the filter and the two-way sub-expansion valve. The solenoid valve is energized and turns it into a low-temperature and low-pressure liquid, which reaches the evaporator. The low-temperature and low-pressure gas flows out of the evaporator, passes through the one-way valve and enters the four-way valve port. Then, it is discharged from the four-way valve port and enters the interior of the gas-liquid separator. Then, it is discharged from the gas-liquid separator and passes through the low-pressure switch to enter the compressor suction port, thus completing the water source heating mode.

[0034] During defrosting, fan 102 is turned off and solenoid valve is opened, allowing some of the high-temperature gas that is about to enter condenser 103 to be introduced into the air duct 202. The high-temperature gas is then ejected through multiple hoses into the air outlet duct 201, heating the fins 101 and causing the frost on the surface of the fins 101 to evaporate. At the same time, the ventilation holes of fan 102 are sealed by sealing component 4 to prevent heat loss and allow heat to accumulate inside the cavity, continuously heating the fins 101 and preventing re-frost formation. In addition, after the heat accumulates inside the cavity, the fins 101 absorb heat, which can improve the heating effect of the air source.

[0035] Specifically, the swing assembly 3 includes a support frame 301 fixed to the bottom of the cavity and swing frames 302 symmetrically arranged on both sides of the support frame 301. Multiple air outlet pipes 201 located in the middle are respectively fixed with swing rods 303 that cooperate with the swing frames 302. The two swing frames 302 slide obliquely on both sides of the support frame 301. The sliding direction of the two swing frames 302 is parallel to the tilting direction of the fins 101. A bidirectional telescopic rod 304 is fixed between the two swing frames 302. An electric push rod 305 is fixed on the lower surface of the bidirectional telescopic rod 304. The electric push rod 305 is fixed on the upper surface of the support frame 301.

[0036] The swing frame 302 is provided with multiple grooves 3021 facing the air outlet duct 201. The swing rod 303 is T-shaped and slides inside the grooves 3021. The surface of the grooves 3021 is provided with avoidance grooves 3022 for avoiding the swing rod 303.

[0037] The uppermost air outlet duct 201 and the adjacent air outlet duct 201 rotate synchronously through the synchronization component 306. The lowermost air outlet duct 201 and the adjacent air outlet duct 201 rotate synchronously through the synchronization component 306. The synchronization component 306 includes a synchronization wheel 3061 fixed to one end of each of the two adjacent air outlet ducts 201. The two synchronization wheels 3061 are connected by a synchronization belt 3062.

[0038] It is understandable that the electric push rod 305 drives the bidirectional telescopic rod 304 and the two swing frames 302 to slide up and down repeatedly, causing the swing frames 302 to drive the swing rod 303 to swing up and down. The swing rod 303 generates adaptive displacement on the inner wall of the groove 3021 to avoid jamming, and causes the swing rod 303 to drive multiple air outlet pipes 201 to rotate, thereby continuously adjusting the air outlet direction and evenly delivering high-temperature air to the fins 101 for defrosting. Due to the bottom air outlet pipe 201 and the top air outlet pipe Since the air outlet pipes 201 are close to the bottom and top of the cavity, in order to avoid motion interference between the swing frame 302 and the inner wall of the cavity when it slides back and forth, a synchronization component 306 is set to make the top and bottom air outlet pipes 201 swing synchronously. When the multiple air outlet pipes 201 in the middle rotate, with the cooperation of the synchronization wheel 3061 and the synchronization belt 3062, the air outlet pipe 201 in the middle drives the top and bottom air outlet pipes 201 to swing synchronously, so as to uniformly heat the fins 101.

[0039] Specifically, the sealing component 4 includes multiple air guide blades 402 that rotate at the top of the cavity via a connecting shaft 401. Two air guide blades 402 are mounted on the surface of the connecting shaft 401 as a group, and the two air guide blades 402 respectively seal the ventilation holes of the two fans 102. Multiple groups of air guide blades 402 are evenly spaced and arranged in clusters. Two clusters of air guide blades 402 are symmetrically arranged at the top of the cavity, and one cluster of air guide blades 402 seals half of the ventilation hole of the fan 102. Both clusters of air guide blades 402 rotate in opposite directions via a transmission component 5, which is located between the two fans 102.

[0040] Understandably, by driving the two clusters of air guide blades 402 to rotate horizontally in opposite directions via the transmission assembly 5, the ventilation holes of the fan 102 are sealed, thus preventing high-temperature air from dissipating from the ventilation holes of the fan 102. By driving the two clusters of air guide blades 402 to rotate vertically in opposite directions via the transmission assembly 5, the air volume delivered by the fan 102 enters the cavity and then flows to the outside through the fins 101, thereby allowing the fins 101 to fully absorb heat in the air source heating mode. By driving the two clusters of air guide blades 402 to rotate in opposite directions and tilt towards the two fins 101 via the transmission assembly 5, the air volume delivered by the fan 102 blows directly onto the fins 101, thereby improving the heat dissipation effect of the fins 101 in the air source cooling mode.

[0041] Specifically, the transmission assembly 5 includes gears 501 fixed to the middle of multiple connecting shafts 401 and racks 502 that mesh synchronously with the multiple gears 501. The racks 502 slide on the surface of multiple mounting blocks 503. The multiple mounting blocks 503 are fixed to the top of the cavity. The mounting blocks 503 are L-shaped. There are two sets of racks 502 that mesh with the multiple gears 501 respectively. The two racks 502 are staggered and slide synchronously in opposite directions through the reverse sliding assembly 504.

[0042] The reverse sliding assembly 504 includes a traction rod 5041 that rotates at the top of the cavity and guide rods 5042 that are respectively fixed to opposite ends of two racks 502. Two through slots are symmetrically opened on the surface of the traction rod 5041, and the two guide rods 5042 slide on the inner walls of the two through slots respectively. A drive motor 5043 for driving the traction rod 5041 to rotate is fixed on the upper surface of the dual-source heat pump unit 1. The drive motor 5043 is fixed between the two fans 102.

[0043] Understandably, the drive motor 5043 drives the traction rod 5041 to rotate. Under the traction of the through groove and the guide rod 5042, the two racks 502 slide synchronously in opposite directions. Under the meshing relationship of the gear 501 and the rack 502, the connecting shaft 401 and the guide vane 402 rotate, thereby adjusting the angle of the guide vane 402 to close or open the ventilation hole of the fan 102.

[0044] In this invention, when defrosting is required, the fan 102 is turned off, the solenoid valve is opened, and part of the high-temperature gas that is about to enter the condenser 103 is introduced into the air duct 202. Through multiple hoses, the high-temperature gas is ejected from the air outlet 201, heating the fins 101 and causing the frost on the surface of the fins 101 to evaporate. The drive motor 5043 drives the traction rod 5041 to rotate. Under the traction of the through groove and guide rod 5042, the two racks 502 slide synchronously in opposite directions. Under the meshing relationship of the gears 501 and racks 502, the two clusters of guide vanes 402 rotate in opposite directions to a horizontal position, thereby sealing the ventilation holes of the fan 102 and preventing high-temperature air from escaping from the ventilation holes. During defrosting, the electric push rod 305 drives the bidirectional telescopic rod 304 and the two swing frames 302 to slide up and down repeatedly, causing the swing frames 302 to drive the swing rod 303 to swing up and down. 303 drives multiple air outlet pipes 201 to swing, thereby continuously adjusting the air outlet direction and evenly delivering high-temperature air to the fins 101. After defrosting the fins 101, the solenoid valve reduces the amount of high-temperature air entering the cavity, continuously heating the fins 101 and preventing re-frost formation. At the same time, the heat accumulated inside the cavity allows the fins 101 to absorb heat, improving the heating effect of the air source. When the outside temperature is insufficient to cause frost formation on the fins 101, in the air source heating mode, the transmission component 5 drives two clusters of air guide blades 402 to rotate in opposite directions to a vertical position, allowing the airflow delivered by the fan 102 to enter the cavity and then circulate to the outside through the fins 101, thus enabling the fins 101 to fully absorb heat. In the air source cooling mode, the transmission component 5 drives two clusters of air guide blades 402 to rotate in opposite directions to be tilted towards the two fins 101, allowing the airflow delivered by the fan 102 to blow directly onto the fins 101, improving the heat dissipation effect of the fins 101.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples; although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A dual-source heat pump, characterized in that, The dual-source heat pump unit (1) includes fins (101) fixed on both sides and two fans (102) installed on the upper surface of the dual-source heat pump unit (1). The top of the dual-source heat pump unit (1) forms a cavity through the two fins (101) and the side wall. The cavity is provided with a defrosting assembly (2) for defrosting the two sets of fins (101). The top of the cavity is provided with a sealing assembly (4) for sealing the ventilation opening of the fan (102). The sealing assembly (4) includes multiple air guide blades (402) that rotate on the top of the cavity through a connecting shaft (401). The air guide blades (402) are used to seal the ventilation opening of the fan (102).

2. A dual-source heat pump according to claim 1, characterized in that, The defrosting assembly (2) includes multiple air outlet pipes (201) disposed inside the fins (101) and an air duct (202) connected to the air inlet of the condenser (103). The multiple air outlet pipes (201) are connected to the air duct (202) through flexible hoses. The multiple air outlet pipes (201) rotate inside the cavity. The multiple air outlet pipes (201) swing synchronously through the swing assembly (3).

3. A dual-source heat pump according to claim 2, characterized in that, The swing assembly (3) includes a support frame (301) fixed at the bottom of the cavity and swing frames (302) symmetrically arranged on both sides of the support frame (301). The surfaces of the multiple air outlet pipes (201) located in the middle are respectively fixed with swing rods (303) that cooperate with the swing frames (302).

4. A dual-source heat pump according to claim 3, characterized in that, The swing frame (302) has multiple grooves (3021) facing the air outlet pipe (201), and the swing rod (303) is T-shaped and slides inside the grooves (3021).

5. A dual-source heat pump according to claim 1, characterized in that, Two guide vanes (402) are mounted on the surface of the connecting shaft (401) as a group. The two guide vanes (402) respectively seal the ventilation holes of the two fans (102). Multiple groups of guide vanes (402) are evenly spaced and arranged as a cluster. Two clusters of guide vanes (402) are symmetrically arranged at the top of the cavity. One cluster of guide vanes (402) seals half of the ventilation hole of the fan (102).

6. A dual-source heat pump according to claim 5, characterized in that, Both clusters of the air guide blades (402) rotate in opposite directions via a transmission assembly (5). The transmission assembly (5) includes gears (501) fixed in the middle of multiple connecting shafts (401) and racks (502) that mesh synchronously with the multiple gears (501). The racks (502) slide on the surface of multiple mounting blocks (503), and the multiple mounting blocks (503) are fixed at the top of the cavity.

7. A dual-source heat pump according to claim 6, characterized in that, There are two sets of racks (502), which mesh with multiple gears (501) respectively. The two racks (502) are staggered and slide synchronously in opposite directions through the reverse sliding assembly (504).

8. A dual-source heat pump according to claim 7, characterized in that, The reverse sliding assembly (504) includes a traction rod (5041) that rotates at the top of the cavity and guide rods (5042) that are respectively fixed at opposite ends of two racks (502). The traction rod (5041) has two through slots symmetrically opened on its surface, and the two guide rods (5042) slide on the inner walls of the two through slots respectively.

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