A multi-purpose air source heat pump system

Abstract

This invention relates to the field of air source heat pump technology, specifically a multi-purpose air source heat pump system. The system includes a heat pump body, within which a heat exchange box and a finned heat exchanger are located. The system also includes two sets of heating components movably disposed within the heat exchange box and located on the air inlet side of the finned heat exchanger. These two sets of heating components can move within the heat exchange box, switching between parallel stacked, parallel distributed, and relatively staggered states. By placing heating components on the air inlet side of the finned heat exchanger and utilizing heating wires on these components to heat the air blown towards the finned heat exchanger, this invention enables the device to absorb sufficient heat from the air even when the outside temperature is low, thus meeting indoor heating needs and avoiding impacting heating efficiency and capacity in winter.

Description

Technical Field

[0001] This invention relates to the field of air source heat pump technology, specifically to a multi-purpose air source heat pump system. Background Technology

[0002] With the growth of energy demand and the increasing requirements for environmental protection, air source heat pumps are being used more and more widely in heating, cooling and other fields due to their high efficiency, energy saving and environmental friendliness.

[0003] Currently, air source heat pump systems generally consist of multiple components such as a compressor, heat exchange box, and expansion valve. Among them, the heat exchange box, as the core carrier for heat exchange between the refrigerant and the air, ensures the cooling and heating modes of the heat pump. The heat exchange box typically contains a finned heat exchanger and a fan. The fan draws outside air into the heat exchange box, and after passing through the finned heat exchanger, the refrigerant inside absorbs heat from the air, completing the process of the refrigerant changing from a liquid to a gas.

[0004] However, due to the low air temperature in winter, especially in regions like Northeast China where temperatures can reach -30°C, the refrigerant absorbs less heat after the cold air is drawn into the heat exchange box and passes through the finned heat exchanger, resulting in reduced heat absorption efficiency. This leads to a significant decrease in the heat pump's heating capacity, failing to meet indoor heating demands. Furthermore, prolonged high-load operation of the compressor increases energy consumption and equipment wear, reducing the overall reliability and lifespan of the system. Therefore, this invention proposes a multi-purpose air source heat pump system to effectively address these shortcomings. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-purpose air source heat pump system to solve the problems mentioned in the background art.

[0006] This invention is achieved through the following technical solution: a multi-purpose air source heat pump system, comprising a heat pump body, wherein the heat pump body is internally provided with a finned heat exchanger, a compressor, a four-way reversing valve and a first heat exchanger, and further comprising a second heat exchanger and a third heat exchanger, wherein the condensate inlet and outlet of the second heat exchanger are respectively connected to the condensate outlet of the first heat exchanger and the input end of the finned heat exchanger, and the condensate inlet and outlet of the third heat exchanger are respectively connected to the compressor and the four-way reversing valve, and a first electronic expansion valve and a second electronic expansion valve are respectively provided on the condensate inlet pipe and the outlet pipe of the second heat exchanger;

[0007] A fan is provided on the leeward side of the finned heat exchanger. The heat pump system also includes a heat exchange box and heating components located inside the heat pump body. Both the finned heat exchanger and the fan are located inside the heat exchange box. There are two sets of heating components, which are movably arranged inside the heat exchange box and located on the air inlet side of the finned heat exchanger.

[0008] When both sets of heating components are located directly opposite the finned heat exchanger, the two sets of heating components are in a parallel stacked state, and both sets of heating components are in working state.

[0009] When one part of the two sets of heating components is located directly opposite the finned heat exchanger and the other part is located not directly opposite the finned heat exchanger, the parts of the two sets of heating components located directly opposite the finned heat exchanger are in a parallel distribution state, and the parts of the two sets of heating components located directly opposite the finned heat exchanger are in a working state, while the parts of the two sets of heating components located not directly opposite the finned heat exchanger are in a non-working state.

[0010] When both sets of heating components are located at positions not directly opposite the finned heat exchanger, the two sets of heating components are in a relatively misaligned state, and both sets of heating components are in a non-operating state.

[0011] Optionally, the heating assembly includes a first heating plate and a second heating plate, which are connected by a movable plate. The two sides of the movable plate are respectively hinged to the first heating plate and the second heating plate.

[0012] Optionally, the heat exchange box is fixedly provided with a number of guide rail assemblies that correspond one-to-one with the two sets of heating components, and the number of guide rail assemblies are respectively used for sliding connection of the two sets of heating components.

[0013] Optionally, the guide rail assembly includes a horizontal rail and a vertical rail. The horizontal rail and the vertical rail are fixedly connected by an arc-shaped rail to form an L-shaped structure. The horizontal rail is located directly opposite the finned heat exchanger and is distributed along the width direction of the heat exchange box. The vertical rail is located at a position not directly opposite the finned heat exchanger and is distributed along the length direction of the heat exchange box.

[0014] Optionally, sliders are formed by downward protrusions on the bottom left and right sides of the first heating plate and the bottom left and right sides of the second heating plate. A plurality of sliders are slidably located on the guide rail assembly. The sliders can move from the horizontal rail to the vertical rail via the arc rail.

[0015] When all of the sliders are on the horizontal rail, both sets of the heating components are located directly opposite the finned heat exchanger.

[0016] When the slider on the second heating plate moves to the vertical rail and the slider on the first heating plate is on the horizontal rail, the first heating plate is located directly opposite the finned heat exchanger and the second heating plate is located not directly opposite the finned heat exchanger.

[0017] When all of the sliders have moved onto the vertical rail, both sets of heating components are located at positions not directly opposite the finned heat exchanger.

[0018] Optionally, the slider is cylindrical, and a linear drive mechanism is fixedly provided inside the heat exchange box. The linear drive mechanism is used to drive the slider to move along the width direction of the heat exchange box so that the heating component moves on the guide rail assembly. The drive end of the linear drive mechanism is fixedly inserted into the guide rail assembly and is fixedly provided with a drive sleeve. The drive sleeve is rotatably sleeved on the slider on the side of the first heating plate away from the second heating plate.

[0019] Optionally, a plurality of first heating wires are fixedly provided on the first heating plate, and a plurality of second heating wires are fixedly provided on the second heating plate; both the first heating wires and the second heating wires can be used to heat the air blown toward the finned heat exchanger.

[0020] Optionally, a plurality of first heating wires are arranged in parallel without intersecting each other, and a plurality of second heating wires are interlaced to form a mesh structure. A rotating ring is rotatably connected to the side of the first heating plate, and a plurality of third heating wires are fixedly arranged on the inner ring surface of the rotating ring. The plurality of third heating wires correspond one-to-one with the plurality of first heating wires.

[0021] When both the first heating plate and the second heating plate are located on the horizontal rail, a plurality of the third heating wires and a plurality of the first heating wires are staggered and form a mesh structure.

[0022] When the second heating plate is located on the vertical rail and the first heating plate is located on the horizontal rail, the third heating wires and the first heating wires are aligned and distributed.

[0023] Optionally, a toothed ring is fixedly fitted on the outer ring surface of the rotating ring, and a rack is fixedly provided on the guide rail assembly. The rack is used to drive the toothed ring to rotate so that a plurality of third heating wires and a plurality of first heating wires are aligned or staggered.

[0024] Optionally, the rack is fixedly connected to the side of the horizontal rail near the arc-shaped rail; when the first heating plate moves from the horizontal rail to the vertical rail, the gear ring gradually approaches the rack and eventually meshes with the rack.

[0025] Compared with the prior art, the present invention provides a multi-purpose air source heat pump system with the following advantages:

[0026] 1. This invention provides a heating component on the air inlet side of a finned heat exchanger. The heating component uses heating wires to heat the air blown towards the finned heat exchanger, enabling the device to absorb sufficient heat from the air even when the outside temperature is low, in order to meet the indoor heating demand and avoid affecting the heating efficiency and capacity in winter.

[0027] 2. This invention features two sets of heating components, controlled by a linear drive mechanism to move on an L-shaped guide rail. This allows the two heating plates within the heating components to be in different positions and states. By switching the states of the two sets of heating components, the device can operate in three modes: multiple heating, single heating, and no heating. This enables the device to select different modes to process air according to different ambient temperatures, thereby improving its adaptability to various environmental requirements. Attached Figure Description

[0028] Figure 1 This is a flowchart illustrating the operation of the heat pump system of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of the present invention.

[0030] Figure 3 This is a schematic diagram of the heat exchanger structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the heat exchanger box of the present invention;

[0032] Figure 5 This is a top sectional view of the heat exchanger box of the present invention;

[0033] Figure 6 This is a schematic diagram of the heating component of the present invention in its first state.

[0034] Figure 7 This is a schematic diagram of the second state structure of the heating component of the present invention;

[0035] Figure 8 This is a schematic diagram of the heating component in the third state of the present invention;

[0036] Figure 9 This is a top sectional view of the guide rail assembly of the present invention;

[0037] Figure 10 for Figure 6 Enlarged structural diagram at point A in the middle;

[0038] Figure 11 for Figure 9 Enlarged structural diagram at point B.

[0039] In the diagram: 1. Heat pump body; 101. Finned heat exchanger; 102. Compressor; 103. Four-way reversing valve; 104. First heat exchanger; 105. Second heat exchanger; 106. Third heat exchanger; 107. First electronic expansion valve; 108. Second electronic expansion valve; 109. Fan; 110. Check valve; 111. Water temperature control valve; 2. Heat exchange box; 3. Heating assembly; 301. First heating plate; 3011. First heating wire; 302. Second heating plate; 3021. Second heating wire; 303. Movable plate; 304. Slider; 305. Rotating ring; 3051. Third heating wire; 3052. Gear ring; 4. Guide rail assembly; 401. Horizontal rail; 402. Vertical rail; 403. Arc rail; 5. Linear drive mechanism; 501. Drive sleeve; 6. Rack. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1 - Figure 11 A multi-purpose air source heat pump system includes a heat pump body 1, wherein the heat pump body 1 is provided with a finned heat exchanger 101, a compressor 102, a four-way reversing valve 103 and a first heat exchanger 104.

[0042] The heat pump system in this embodiment also includes a second heat exchanger 105 and a third heat exchanger 106. The refrigerant inlet and outlet of the second heat exchanger 105 are respectively connected to the refrigerant outlet of the first heat exchanger 104 and the input end of the finned heat exchanger 101. The refrigerant inlet and outlet of the third heat exchanger 106 are respectively connected to the compressor 102 and the four-way reversing valve 103. A first electronic expansion valve 107 and a second electronic expansion valve 108 are respectively provided on the refrigerant inlet and outlet pipes of the second heat exchanger 105.

[0043] In the air source heat pump system provided by this invention, a heat exchange mechanism is added to the traditional heat pump system, such as... Figure 1As shown in the diagram, the inlet and outlet of the second heat exchanger 105 and the third heat exchanger 106 are connected in series, and a one-way valve 110 is installed on the pipeline between them. The outlet of the second heat exchanger 105 is also connected to the outlet of the third heat exchanger 106, and a water temperature control valve 111 is also installed on the outlet pipeline of the third heat exchanger 106. The function of the second heat exchanger 105 is to pre-treat the cold or hot water on the inlet side, and at the same time, to further subcool or superheat the refrigerant after heat exchange in the first heat exchanger 104 or the refrigerant after heat exchange in the heat exchanger. The function of the water temperature control valve 111 is to mix the low-temperature hot water in the second heat exchanger 105 with the high-temperature hot water in the third heat exchanger 106, or to close the water circuit on the third heat exchanger 106 side when cooling water, thereby obtaining the water temperature required by the user.

[0044] This heat exchange mechanism enables the heat pump system to simultaneously provide hot water and heating, hot water and air conditioning, cold water and air conditioning, or cold water and heating from a single main unit.

[0045] Specifically, when users have both heating and hot water needs in winter, the first electronic expansion valve 107 in the system is fully open; the target subcooling and superheating are mainly controlled by the second electronic expansion valve 108 through throttling. At this time, the low-temperature cold water exchanges heat with the refrigerant before the valve in the second heat exchanger 105, so as to preheat the low-temperature cold water entering the second heat exchanger 105. This can avoid the situation where the exhaust temperature drops sharply during the peak hot water usage period due to the large heat exchange temperature difference in the third heat exchanger 106, and can also achieve the purpose of subcooling the refrigerant after heat exchange in the first heat exchanger 104.

[0046] When a user has a demand for cooling and hot water, the second electronic expansion valve 108 in the system is in a fully open state; the target supercooling and superheating are controlled by the first electronic expansion valve 107.

[0047] When users have a demand for air conditioning and chilled water, the first electronic expansion valve 107 in the system is fully open; the second electronic expansion valve 108 controls the target subcooling and superheating, and both the second heat exchanger 105 and the third heat exchanger 106 are in use. At this time, the water temperature control valve 111 closes the water outlet pipe on the side of the third heat exchanger 106 to prevent the chilled water from the second heat exchanger 105 and the hot water from the third heat exchanger 106 from mixing, which would prevent the purpose of producing chilled water from being achieved.

[0048] When users have both cold and heating needs, the first electronic expansion valve 107 in the system is fully open. The second electronic expansion valve 108 controls the target subcooling and superheating levels, at which point the four-way reversing valve 103 switches to heating mode. The first heat exchanger 104 is used as a condenser. Low-temperature heating water enters the first heat exchanger 104 from the inlet end and exchanges heat with the medium-temperature refrigerant that has undergone prior heat exchange. After being heated, it is output from the outlet end to provide heating for the room. At the same time, room-temperature domestic water enters the second heat exchanger 105 and exchanges heat with the low-temperature refrigerant before the valve to achieve initial cooling. It then flows to the water temperature control valve 111. At this time, the water temperature control valve 111 closes the outlet pipe on the side of the third heat exchanger 106, and the one-way valve 110 closes simultaneously to prevent any residual high-temperature water in the third heat exchanger 106 from mixing with the initially cooled water flowing out of the second heat exchanger 105. This ensures that the domestic water continues to undergo deep cooling in the second heat exchanger 105, and finally outputs domestic cold water that meets the user's needs.

[0049] Furthermore, a fan 109 is provided on the leeward side of the finned heat exchanger 101. The heat pump system also includes a heat exchange box 2 and a heating assembly 3 located inside the heat pump body 1. Both the finned heat exchanger 101 and the fan 109 are located inside the heat exchange box 2 to draw air from outside the heat exchange box 2 into the heat exchange box 2, and after heat exchange through the finned heat exchanger 101, the air is blown out from the air outlet.

[0050] The heating components 3 are arranged in two sets, which are movably installed in the heat exchange box 2 and located on the air inlet side of the finned heat exchanger 101. This allows the air blown toward the finned heat exchanger 101 to pass through the heating components 3 first, be heated, and then blown toward the finned heat exchanger 101. This enables the device to improve the heat exchange efficiency of the finned heat exchanger 101 when the ambient temperature is low, thereby improving the heating capacity of the heat pump to meet indoor heating needs.

[0051] Specifically, when both sets of heating components 3 are positioned directly opposite the finned heat exchanger 101, they are stacked in parallel and both are in operation. In this case, the air is heated twice before being blown onto the finned heat exchanger 101, making it suitable for ambient temperatures below -10°C.

[0052] When one part of the two sets of heating elements 3 is positioned directly opposite the finned heat exchanger 101, and the other part is positioned indirectly opposite the finned heat exchanger 101, the portions of the two sets of heating elements 3 positioned directly opposite the finned heat exchanger 101 are parallel to each other. The portions of the two sets of heating elements 3 positioned directly opposite the finned heat exchanger 101 are in operation, while the portions of the two sets of heating elements 3 positioned indirectly opposite the finned heat exchanger 101 are inactive. In this case, air passing through the portion of one set of heating elements 3 directly opposite the finned heat exchanger 101 will be directly blown towards the finned heat exchanger 101 without being further heated by the other set of heating elements 3. This allows the air to be heated only once before being blown towards the finned heat exchanger 101, making it suitable for ambient temperatures ranging from -10℃ to 0℃.

[0053] When both sets of heating elements 3 are located in positions not directly opposite the finned heat exchanger 101, they are in a relatively staggered state and both are in a non-operating state. At this time, neither set of heating elements 3 will block the air from blowing towards the finned heat exchanger 101, allowing the air to blow directly towards the finned heat exchanger 101 without being heated, which is suitable for situations where the ambient temperature is higher than 0℃.

[0054] Furthermore, the heating assembly 3 includes a first heating plate 301 and a second heating plate 302, which are connected by a movable plate 303. The two sides of the movable plate 303 are respectively hinged to the first heating plate 301 and the second heating plate 302. The first heating plate 301 and the second heating plate 302 are rotatably connected to the two sides of the movable plate 303 via two hinge shafts, which are distributed along the height direction of the heat exchange box 2. Therefore, the first heating plate 301 and the second heating plate 302 can rotate left and right around the corresponding hinge shafts to change the state of the heating assembly 3 according to different heating modes.

[0055] It should be noted that the heat exchange box 2 is fixedly equipped with several guide rail assemblies 4 that correspond one-to-one with the two sets of heating components 3. The several guide rail assemblies 4 are used for sliding connection of the two sets of heating components 3.

[0056] Specifically, in this embodiment, there are four guide rail assemblies 4. The four guide rail assemblies 4 are symmetrically distributed in pairs on the inner top and bottom walls of the heat exchange box 2. That is, the four guide rail assemblies 4 are fixedly connected to the inner top or bottom wall of the heat pump body 1, and two guide rail assemblies 4 on the same vertical plane are located at the top and bottom of a group of heating components 3, respectively. The upper and lower sides of the heating components 3 are slidably connected to the corresponding guide rail assemblies 4, so that the heating components 3 can move stably between the corresponding two guide rail assemblies 4.

[0057] Specifically, the guide rail assembly 4 includes a horizontal rail 401 and a vertical rail 402. The horizontal rail 401 and the vertical rail 402 are fixedly connected by an arc-shaped rail 403 to form an L-shaped structure. The horizontal rail 401 is located directly opposite the finned heat exchanger 101 and is distributed along the width direction of the heat exchange box 2. The vertical rail 402 is located not directly opposite the finned heat exchanger 101 and is distributed along the length direction of the heat exchange box 2. This allows the heating component 3 to change its shape and thus its operating state when it moves to different positions on the guide rail assembly 4.

[0058] The length of the horizontal rail 401 is no greater than the width of the heat exchange box 2, and the length of the vertical rail 402 is no less than the length of the horizontal rail 401. The guide rail assemblies 4 corresponding to different heating components 3 are as follows: Figure 5 The state distribution shown is such that when the two sets of heating components 3 move on the corresponding guide rail components 4, they will move relative to each other, so that the movement process of the two sets of heating components 3 will not interfere with or hinder each other.

[0059] Furthermore, sliders 304 are formed on the top and bottom left and right sides of the first heating plate 301 and the top and bottom left and right sides of the second heating plate 302, protruding towards the guide rail assembly 4. Several sliders 304 are slidably located on the guide rail assembly 4. The sliders 304 can move from the horizontal rail 401 through the arc rail 403 towards the vertical rail 402.

[0060] In this embodiment, the guide rail assembly 4 has a groove on the side facing the heating assembly 3 for sliding connection of the slider 304. The shape of the groove is the same as the shape of the guide rail assembly 4, and the slider 304 is cylindrical, so that the slider 304 can move smoothly in the groove on the guide rail assembly 4. In particular, when the slider 304 moves to the junction of the horizontal rail 401 and the arc rail 403 and the junction of the arc rail 403 and the vertical rail 402, the cylindrical slider 304 can smoothly switch to different rails, thereby changing the state of the first heating plate 301 or the second heating plate 302.

[0061] In order to make the movement of the heating component 3 on the guide rail assembly 4 more convenient to be controlled, a linear drive mechanism 5 is fixedly provided in the heat exchange box 2 in this application. The linear drive mechanism 5 is used to drive the slider 304 to move along the width direction of the heat exchange box 2 so that the heating component 3 moves on the guide rail assembly 4. The drive end of the linear drive mechanism 5 is fixedly inserted into the guide rail assembly 4 and is fixedly provided with a drive sleeve 501. The drive sleeve 501 is rotatably sleeved on the slider 304 on the side of the first heating plate 301 away from the second heating plate 302.

[0062] In this embodiment, the linear drive mechanism 5 is a linear slide, and the drive end of the linear drive mechanism 5 is a slide block. Figure 9 and Figure 11As shown, an extension rod is fixedly connected to the side of the slide of the linear drive mechanism 5. The end of the extension rod extends into the groove on the guide rail assembly 4 and is fixedly connected to the drive sleeve 501. The drive sleeve 501 is rotatably sleeved on the outside of the slider 304 on the side of the first heating plate 301 away from the second heating plate 302. This allows the linear drive mechanism 5 to drive the slider 304 to move along the distribution direction of the horizontal rail 401. When the slider 304 on the side of the first heating plate 301 closer to the second heating plate 302 needs to move from the horizontal rail 401 to the arc rail 403 and the vertical rail 402, the slider 304 on the side of the first heating plate 301 away from the second heating plate 302 can rotate within the drive sleeve 501, preventing the drive sleeve 501 from obstructing the rotation of the first heating plate 301.

[0063] Specifically, when several sliders 304 are all located on the horizontal rail 401, the two sets of heating components 3 are in a straight line and are located directly opposite the finned heat exchanger 101. At this time, the two sets of heating components 3 heat the air twice.

[0064] When all the sliders 304 on the second heating plate 302 move to the vertical rail 402 and all the sliders 304 on the first heating plate 301 are on the horizontal rail 401, both sets of heating components 3 are L-shaped. The first heating plate 301 is located directly opposite the finned heat exchanger 101, and the second heating plate 302 is located not directly opposite the finned heat exchanger 101. The facing surfaces of the first heating plates 301 on the two sets of heating components 3 are flush, so that the two first heating plates 301 can be combined into a single heating structure, so that the air heated by any of the first heating plates 301 will be directly blown towards the finned heat exchanger 101.

[0065] When several sliders 304 on the second heating plate 302 move to the vertical rail 402, and sliders 304 on the side of the first heating plate 301 closest to the second heating plate 302 also move to the vertical rail 402, and sliders 304 on the side of the first heating plate 301 furthest from the second heating plate 302 are driven by the linear drive mechanism 5 to one end of the horizontal rail 401 close to the arc rail 403, both sets of heating components 3 are located at positions not directly opposite the finned heat exchanger 101. At this time, it is not necessary to heat the air, and the air flow will not be blocked by the heating components 3, thereby reducing air resistance and improving the heat exchange efficiency of the finned heat exchanger 101.

[0066] Furthermore, a plurality of first heating wires 3011 are fixedly mounted on the first heating plate 301, and a plurality of second heating wires 3021 are fixedly mounted on the second heating plate 302; both the first heating wires 3011 and the second heating wires 3021 can be used to heat the air blown toward the finned heat exchanger 101. The heating wires are connected to an external power source via corresponding power cables, circuit breakers, etc., to supply the necessary power for heating. A temperature sensing device and controller are also installed inside the heat exchange box 2 to control the operating status of the heating wires in different areas.

[0067] It should be noted that the first heating wires 3011 are arranged in parallel without intersecting each other, and the second heating wires 3021 are interlaced to form a mesh structure. A rotating ring 305 is rotatably connected to the side of the first heating plate 301. A number of third heating wires 3051 are fixedly arranged on the inner ring surface of the rotating ring 305. The number of third heating wires 3051 and the number of first heating wires 3011 correspond one-to-one.

[0068] The first heating plate 301 has a circular groove for mounting the first heating wire 3011. The rotating ring 305 is rotatably connected to the first heating plate 301 at the position opposite the circular groove. By rotating the rotating ring 305, the rotation of the third heating wire 3051 on the inner ring surface of the rotating ring 305 can be controlled, so that the third heating wire 3051 and the first heating wire 3011 are aligned or staggered.

[0069] The rotation process of the rotating ring 305 is described in detail below:

[0070] A gear ring 3052 is fixedly fitted onto the outer ring surface of the rotating ring 305, and a rack 6 is fixedly provided on the guide rail assembly 4. The rack 6 is used to drive the gear ring 3052 to rotate so that a plurality of third heating wires 3051 and a plurality of first heating wires 3011 are aligned or staggered. The rack 6 is fixedly connected to the side of the horizontal rail 401 near the arc-shaped rail 403; when the first heating plate 301 moves on the horizontal rail 401 toward the vertical rail 402, the gear ring 3052 gradually approaches the rack 6 and eventually meshes with the rack 6. Therefore, when the first heating plate 301 moves from the horizontal rail 401 to the vertical rail 402, the gear ring 3052 will not contact the rack 6 at first. At this time, the rotating ring 305 will not rotate, so that the third heating wire 3051 and the first heating wire 3011 are in an interleaved state. When the gear ring 3052 contacts the rack 6, it will mesh with the rack 6. As the first heating plate 301 continues to move, the rack 6 will drive the gear ring 3052 to rotate, so that the rotating ring 305 will drive the third heating wire 3051 to rotate at a certain angle. Finally, the rack 6 and the gear ring 3052 will separate, and the third heating wire 3051 will be aligned with the first heating wire 3011.

[0071] On the other hand, the rotating ring 305 and the first heating plate 301 are rotatably connected by a damping bearing so that the rotating ring 305 will not rotate when the gear ring 3052 is not subjected to external force, thus keeping the rotating ring 305 stable.

[0072] Detailed explanation with reference to the accompanying drawings:

[0073] like Figure 6 As shown, when the first heating plate 301 and the second heating plate 302 are both located on the horizontal rail 401, a number of third heating wires 3051 and a number of first heating wires 3011 are staggered and form a mesh structure. At this time, the first heating wires 3011, the second heating wires 3021 and the third heating wires 3051 are all in the energized working state. The mesh structure increases the contact area between the air and the heating wires when the air passes through the heating component 3, thereby improving the heating effect on the air.

[0074] like Figure 7 As shown, when the second heating plate 302 is located on the vertical rail 402 and the first heating plate 301 is located on the horizontal rail 401, several third heating wires 3051 and several first heating wires 3011 are aligned and distributed. At this time, the first heating wires 3011 are in the energized working state, while the second heating wires 3021 and the third heating wires 3051 are in the de-energized state. The first heating wires 3011 on the two sets of heating components 3 heat the air once, and the aligned distribution of the third heating wires 3051 and the first heating wires 3011 can reduce air resistance and make the air flow smoother.

[0075] like Figure 8 As shown, when the side of the first heating plate 301 away from the second heating plate 302 moves to the end of the horizontal rail 401 close to the arc rail 403, the first heating wire 3011, the second heating wire 3021, and the third heating wire 3051 are all in a non-energized state. The two sets of heating components 3 no longer block and heat the air, allowing the air to blow directly onto the finned heat exchanger 101.

[0076] The working principle and usage process of this invention are as follows: First, when the ambient temperature is below -10℃, the user can control the first heating wire 3011, the second heating wire 3021, and the third heating wire 3051 to be energized, so that the air entering the heat exchange box 2 will be heated twice by the two sets of heating components 3 before being sent to the finned heat exchanger 101.

[0077] When the ambient temperature is between -10℃ and 0℃, the user can control the heating component 3 to move from the horizontal rail 401 to the vertical rail 402 via the linear drive mechanism 5 until the second heating plate 302 is completely moved onto the vertical rail 402. At this time, the third heating wire 3051 will also rotate under the drive of the rack 6 to be aligned with the first heating wire 3011. At this time, the user can control only the first heating wire 3011 to be energized to heat the air once.

[0078] When the ambient temperature is above 0℃, the user can continue to control the first heating plate 301 to move towards the vertical rail 402 via the linear drive mechanism 5. Eventually, the side of the first heating plate 301 away from the second heating plate 302 moves to the end of the horizontal rail 401 near the arc rail 403. At this time, the first heating wire 3011, the second heating wire 3021, and the third heating wire 3051 are all de-energized, and the air is no longer heated. This allows the device to be used in environments with various temperatures.

[0079] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-purpose air source heat pump system, comprising a heat pump body, wherein the heat pump body internally houses a finned heat exchanger, a compressor, a four-way reversing valve, and a first heat exchanger, characterized in that: It also includes a second heat exchanger and a third heat exchanger. The condensate inlet and outlet of the second heat exchanger are connected to the condensate outlet of the first heat exchanger and the input end of the finned heat exchanger, respectively. The condensate inlet and outlet of the third heat exchanger are connected to the compressor and the four-way reversing valve, respectively. A first electronic expansion valve and a second electronic expansion valve are respectively installed on the condensate inlet pipe and the outlet pipe of the second heat exchanger. A fan is provided on the leeward side of the finned heat exchanger. The heat pump system also includes a heat exchange box and heating components located inside the heat pump body. Both the finned heat exchanger and the fan are located inside the heat exchange box. There are two sets of heating components, which are movably arranged inside the heat exchange box and located on the air inlet side of the finned heat exchanger. When both sets of heating components are located directly opposite the finned heat exchanger, the two sets of heating components are in a parallel stacked state, and both sets of heating components are in working state. When one part of the two sets of heating components is located directly opposite the finned heat exchanger and the other part is located not directly opposite the finned heat exchanger, the parts of the two sets of heating components located directly opposite the finned heat exchanger are in a parallel distribution state, and the parts of the two sets of heating components located directly opposite the finned heat exchanger are in a working state, while the parts of the two sets of heating components located not directly opposite the finned heat exchanger are in a non-working state. When both sets of heating components are located at positions not directly opposite the finned heat exchanger, the two sets of heating components are in a relatively staggered state, and both sets of heating components are in a non-working state. The heating assembly includes a first heating plate and a second heating plate, which are connected by a movable plate. The two sides of the movable plate are respectively hinged to the first heating plate and the second heating plate. The heat exchange box is fixedly provided with a plurality of guide rail assemblies corresponding one-to-one with the two sets of heating assemblies. The plurality of guide rail assemblies are used for sliding connection of the two sets of heating assemblies. The guide rail assembly includes a horizontal rail and a vertical rail. The horizontal rail and the vertical rail are fixedly connected by an arc-shaped rail to form an L-shaped structure. The horizontal rail is located directly opposite the finned heat exchanger and is distributed along the width direction of the heat exchange box. The vertical rail is located not directly opposite the finned heat exchanger and is distributed along the length direction of the heat exchange box.

2. The multi-purpose air source heat pump system according to claim 1, characterized in that: The bottom left and right sides of the first heating plate and the bottom left and right sides of the second heating plate both protrude downward to form sliders. A plurality of the sliders are slidably located on the guide rail assembly. The sliders can move from the horizontal rail through the arc rail to the vertical rail. When all of the sliders are on the horizontal rail, both sets of the heating components are located directly opposite the finned heat exchanger. When the slider on the second heating plate moves to the vertical rail and the slider on the first heating plate is on the horizontal rail, the first heating plate is located directly opposite the finned heat exchanger and the second heating plate is located not directly opposite the finned heat exchanger. When all of the sliders have moved onto the vertical rail, both sets of heating components are located at positions not directly opposite the finned heat exchanger.

3. A multi-purpose air source heat pump system according to claim 2, characterized in that: The slider is cylindrical, and a linear drive mechanism is fixedly installed inside the heat exchange box. The linear drive mechanism is used to drive the slider to move along the width direction of the heat exchange box so that the heating component moves on the guide rail assembly. The drive end of the linear drive mechanism is fixedly inserted into the guide rail assembly and is fixedly provided with a drive sleeve. The drive sleeve is rotatably sleeved on the slider on the side of the first heating plate away from the second heating plate.

4. A multi-purpose air source heat pump system according to claim 3, characterized in that: A plurality of first heating wires are fixedly provided on the first heating plate, and a plurality of second heating wires are fixedly provided on the second heating plate; both the first heating wires and the second heating wires can be used to heat the air blown toward the finned heat exchanger.

5. A multi-purpose air source heat pump system according to claim 4, characterized in that: A plurality of first heating wires are arranged in parallel without intersecting each other, and a plurality of second heating wires are interlaced to form a mesh structure. A rotating ring is rotatably connected to the side of the first heating plate. A plurality of third heating wires are fixed on the inner ring surface of the rotating ring, and the plurality of third heating wires correspond one-to-one with the plurality of first heating wires. When both the first heating plate and the second heating plate are located on the horizontal rail, a plurality of the third heating wires and a plurality of the first heating wires are staggered and form a mesh structure. When the second heating plate is located on the vertical rail and the first heating plate is located on the horizontal rail, the third heating wires and the first heating wires are aligned and distributed.

6. A multi-purpose air source heat pump system according to claim 5, characterized in that: A toothed ring is fixedly fitted on the outer ring surface of the rotating ring, and a rack is fixedly provided on the guide rail assembly. The rack is used to drive the toothed ring to rotate so that a plurality of third heating wires and a plurality of first heating wires are aligned or staggered.

7. A multi-purpose air source heat pump system according to claim 6, characterized in that: The rack is fixedly connected to the side of the horizontal rail near the arc-shaped rail; when the first heating plate moves from the horizontal rail to the vertical rail, the gear ring gradually approaches the rack and eventually meshes with the rack.

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