Auxiliary heating device and heat pump apparatus

Abstract

The application discloses an auxiliary heating device and a heat pump device. The auxiliary heating device comprises water pipes and heating bodies. The water pipes are suitable for water flow. The heating bodies are suitable for heating the water flowing through the water pipes. The number of the water pipes is multiple. The multiple water pipes are arranged in parallel. In the technical scheme of the application, the multiple water pipes are arranged in parallel, the flow rate of the water flowing through the water pipes can be appropriately slowed down, the heating effect of the heating bodies on the water is improved, compared with the single water path formed in the auxiliary heating device, the multiple parallel water pipes can reduce the water resistance generated, and are suitable for the large-flow working condition of the heat pump device.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation and air conditioning technology, and in particular to an auxiliary heating device and a heat pump equipment. Background Technology

[0002] In ultra-low ambient temperatures, the ability of the compressor to absorb heat from the environment in heat pump equipment will decrease. In order to ensure the capacity of the heat pump equipment, an auxiliary heating device is required to provide auxiliary heating for the flowing water. However, the current auxiliary heating devices cannot be well adapted to the high flow rate conditions of heat pumps. Summary of the Invention

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, this application proposes an auxiliary heating device.

[0004] To achieve the above objectives, this application discloses an auxiliary heating device, which includes a water supply pipe and a heating element. The water supply pipe is adapted to supply water, and the heating element is adapted to heat the water flowing through the water supply pipe. The number of water supply pipes is multiple, and the multiple water supply pipes are arranged in parallel.

[0005] In some embodiments of this application, the heating element is located outside the water supply pipe.

[0006] In some embodiments of this application, the heating element surrounds the water supply pipe circumferentially; And / or, the heating element is a thick film heater and is sintered on the outer wall of the water pipe.

[0007] In some embodiments of this application, the auxiliary heating device includes a water inlet manifold, and the inlet ends of a plurality of water supply pipes are respectively connected to the water inlet manifold so that the plurality of water supply pipes are respectively connected to the water inlet manifold, and the water inlet manifold is provided with a water inlet connector.

[0008] In some embodiments of this application, the auxiliary heating device includes a water outlet manifold, and the outlet ends of a plurality of water supply pipes are respectively connected to the water outlet manifold, so that the plurality of water supply pipes are respectively connected to the water outlet manifold, and the water outlet manifold is provided with a water outlet connector.

[0009] In some embodiments of this application, the inlet manifold and the outlet manifold extend along a first direction, the water supply pipe extends between the inlet manifold and the outlet manifold, and a plurality of the water supply pipes are arranged along the first direction.

[0010] In some embodiments of this application, the water inlet connector is located at one end of the water inlet manifold, and the other end of the water inlet manifold is a first sealing end; The water outlet connector is located at one end of the water outlet manifold, and the other end of the water outlet manifold is the second sealing end; The direction from the inlet connector to the first plug end is opposite to the direction from the outlet connector to the second plug end.

[0011] In some embodiments of this application, a plurality of the water supply pipes are arranged at equal intervals along the first direction; And / or, the water inlet connector is coaxially arranged with the water inlet manifold; And / or, the water outlet connector is coaxially arranged with the water outlet manifold; And / or, the orientation of the inlet connector is opposite to the orientation of the outlet connector.

[0012] In some embodiments of this application, the auxiliary heating device includes a housing that encloses the water pipe, and the heating element is disposed outside the water pipe and located inside the housing.

[0013] In some embodiments of this application, the housing encloses a plurality of the water pipes; And / or, the housing is adapted for heat shrinking deformation; And / or, the auxiliary heating device includes a heat insulation layer disposed between the housing and the heating element.

[0014] In some embodiments of this application, the auxiliary heating device includes an inlet connector and an outlet connector, a plurality of water supply pipes extend between the inlet connector and the outlet connector and are arranged around a central axis, and the inlet ends of the plurality of water supply pipes are respectively connected to the inlet connector, and the outlet ends of the plurality of water supply pipes are respectively connected to the outlet connector.

[0015] In some embodiments of this application, multiple water pipes are arranged at equal intervals around the same center on a circle of the same radius.

[0016] In some embodiments of this application, the water inlet connector includes a water inlet and a plurality of water inlet outlets respectively connected to the water inlet. The plurality of water inlet outlets are connected to the water inlet ends of the plurality of water supply pipes in a one-to-one correspondence. The plurality of water inlet outlets are arranged equidistantly on a circle of the same radius around the same center, and the center of the circle around the plurality of water inlet outlets is coaxial with the center of the circle around the plurality of water supply pipes. The water outlet connector includes a water outlet and multiple water inlets respectively connected to the water outlet. The multiple water inlets are connected to the water outlet ends of the multiple water supply pipes one by one. The multiple water inlets are arranged equidistantly on a circle with the same radius around the same center, and the center of the circle around which the multiple water inlets are arranged is coaxial with the center of the circle around which the multiple water supply pipes are arranged.

[0017] In some embodiments of this application, the water inlet connector includes a water inlet and a plurality of first water passages, each of which corresponds to a plurality of water supply pipes. One end of each first water passage forms a first water outlet communicating with the water inlet, and the other end forms a water outlet communicating with the water inlet end of the water supply pipe. The water inlet connector is provided with a first baffle, which separates the plurality of first water outlets from each other.

[0018] In some embodiments of this application, at least a portion of the first baffle is located upstream of the first water outlet; And / or, a water inlet confluence channel is formed between the first baffle and the water inlet.

[0019] In some embodiments of this application, the water outlet connector includes a water outlet and a plurality of second water passages, each of which corresponds to a plurality of water supply pipes. One end of each second water passage forms a water inlet that communicates with the water outlet of the water supply pipe, and the other end forms a second water outlet that communicates with the water outlet. The water outlet connector is provided with a second baffle, which separates the plurality of second water outlets from each other.

[0020] In some embodiments of this application, at least a portion of the second baffle is located downstream of the second water outlet; And / or, a water flow channel is formed between the second baffle and the water outlet.

[0021] In some embodiments of this application, the auxiliary heating device includes a housing that encloses a plurality of water pipes, and the heating element is disposed outside the water pipes and located inside the housing.

[0022] In some embodiments of this application, one end of the housing is connected to the water inlet connector, and the other end of the housing is connected to the water outlet connector.

[0023] In some embodiments of this application, one of the water inlet connector and the water outlet connector is integrally formed with the housing.

[0024] In some embodiments of this application, the auxiliary heating device includes a heat insulation layer disposed between the housing and the heating element.

[0025] A second aspect of this application discloses a heat pump device, which includes the aforementioned auxiliary heating device.

[0026] In this technical solution, multiple water pipes are connected in parallel, which can appropriately slow down the flow rate of water through the water pipes and improve the heating effect of the heating element on the water. Compared with the formation of a single water path in the auxiliary heating device, multiple parallel water pipes can reduce the water resistance generated, which is suitable for the high flow rate of heat pump equipment.

[0027] Other advantages of this application 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 this application. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort, wherein: Figure 1 Schematic diagrams of auxiliary heating devices in some embodiments; Figure 2 for Figure 1 The auxiliary heating device shown is a front view. Figure 3 for Figure 1 Side view of the auxiliary heating device shown; Figure 4 for Figure 3 Sectional view of AA; Figure 5 for Figure 4 The diagram shows the interaction between the auxiliary heating device and the outer shell and insulation layer. Figure 6 This is another schematic diagram of the auxiliary heating device in some embodiments; Figure 7 for Figure 6 The auxiliary heating device shown is a front view. Figure 8 for Figure 7 BB section view; Figure 9 for Figure 7 CC section view; Figure 10 for Figure 7 The diagram shows the interaction between the auxiliary heating device and the insulation layer. Figure 11 for Figure 6 A schematic diagram of the water inlet connector of the auxiliary heating device shown. Figure 12 for Figure 11 A schematic diagram of the water inlet connector viewed along its axial direction; Figure 13 for Figure 12 DD section view; Figure 14 for Figure 6 A schematic diagram of the water outlet connector of the auxiliary heating device shown. Figure 15 for Figure 14A schematic diagram of the water outlet connector viewed along its axial direction. Figure 16 for Figure 15 EE section view.

[0029] Figure label: Water supply pipe 100, heating element 200, inlet manifold 300, first sealing end 310, outlet manifold 400, second sealing end 410, inlet connector 500, inlet 510, first water passage 520, first water passage 521, inlet outlet 522, inlet manifold channel 530, first baffle 540, outlet connector 600, outlet 610, second water passage 620, second water passage 621, outlet inlet 622, outlet manifold channel 630, second baffle 640, shell 710, insulation layer 720, central shaft 800.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The embodiments of this application 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 application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] The first aspect of this application discloses an auxiliary heating device, which, in some embodiments, is combined with... Figures 1 to 4 As shown, the auxiliary heating device includes a water supply pipe 100 and a heating element 200. The water supply pipe 100 is suitable for supplying water, and the heating element 200 is suitable for heating the water flowing through the water supply pipe 100. There are multiple water supply pipes 100, and the multiple water supply pipes 100 are connected in parallel.

[0035] Using a heat pump device as an example, a heat pump device can absorb heat from the environment to heat water. When the ambient temperature is extremely low, the heat pump device's ability to absorb heat from the environment will decrease. In order to ensure that the heat pump device can heat the water, the heat pump device includes an auxiliary heating device, which is an electric heating device. The heat pump device absorbs heat from the environment and heats the water. The heated water is then passed into the auxiliary heating device and electrically heated to obtain water at the set temperature. However, the current auxiliary heating device cannot well adapt to the high flow rate conditions of the heat pump. Therefore, this application makes an improvement and proposes a new auxiliary heating device.

[0036] The auxiliary heating device includes a water supply pipe 100 and a heating element 200. The water supply pipe 100 is used to supply water, that is, one end of the water supply pipe 100 is connected to the water supply circuit of the heat pump equipment, and the other end of the water supply pipe 100 is connected to the water outlet circuit of the heat pump equipment. Water flows into the water supply pipe 100 from the water supply circuit of the heat pump equipment and flows out of the water supply pipe 100 towards the water outlet circuit. The heating element 200 is an electrically heated component. During the process of water flowing through the water supply pipe 100, the heating element 200 heats the water flowing through the water supply pipe 100 based on the principle of electric heating.

[0037] Furthermore, there are multiple water supply pipes 100, where multiple means two or more. These multiple water supply pipes 100 are connected in parallel and are respectively connected to the water circuit of the heat pump equipment. That is, one end (inlet end) of each of the multiple water supply pipes 100 is connected to the water supply circuit of the heat pump equipment, and the other end (outlet end) of each of the multiple water supply pipes 100 is connected to the water outlet circuit of the heat pump equipment. Water enters each water supply pipe 100 from the water supply circuit of the heat pump equipment and flows out from each water supply pipe 100 to enter the water outlet circuit of the heat pump equipment. Compared with the auxiliary heating device, which has a single water circuit, multiple water supply pipes 100 are connected in parallel to form a parallel water circuit. The parallel water circuit has multiple branch water circuits, which can reduce the flow rate of water through each water supply pipe 100, thereby increasing the heating time of the water and thus improving the heating effect of the water.

[0038] For example, let's compare Option 1 and Option 2: Scheme 1 includes a first water pipe to form a single water path. The cross-sectional area of ​​the first water pipe is a. The total cross-sectional area of ​​Scheme 1 is A1. Since it is a single water path, A1 = a. The total flow rate of Scheme 1 is Q1. The flow velocity in the first water pipe is V1 = Q1 / A1 = Q1 / a.

[0039] Scheme 2 includes three first water pipes connected in parallel. The cross-sectional area of ​​the first water pipe is a. The total cross-sectional area of ​​Scheme 2 is A2=3a. The total flow rate of Scheme 2 is Q2. The flow velocity in the second water pipe is V2=Q2 / A2=Q2 / 3a.

[0040] When the total flow rate remains constant, i.e., Q1=Q2, then V2=V1 / 3, and the water delivery speed of the second water pipe is one-third of the water delivery speed of the first water pipe.

[0041] Therefore, it can be seen that by setting multiple water supply pipes in parallel, under the premise of constant total flow, compared with a single water circuit, the water flow velocity of each water supply pipe 100 can be reduced by setting multiple water supply pipes 100. Since water resistance is proportional to the square of flow velocity, the lower the flow velocity, the lower the water resistance and the lower the pressure drop loss. Compared with a long single water circuit for auxiliary heating device, the multiple parallel water supply pipes 100 in this embodiment can effectively reduce water resistance and adapt to the high flow conditions of heat pump equipment.

[0042] It is understandable that the so-called water pipe 100 is not limited to being a tubular structure; it can also be a box structure. As long as it can form a water conveyance space, it can be regarded as a water pipe 100.

[0043] There are several ways to heat the water flowing through the water pipe 100 using the heating element 200. For example, the heating element 200 can be placed inside the water pipe 100, that is, placed in the water delivery space of the water pipe 100. However, in this way, the heating element 200 will be in direct contact with the water, posing a safety hazard. Moreover, the heating element 200 is easily corroded by water, resulting in a shortened service life. Therefore, in some embodiments, combined with... Figure 1 As shown, the heating element 200 is located outside the water supply pipe 100.

[0044] When the heating element 200 is working, the heat generated by the heating element 200 is transferred to the water supply pipe 100, and then transferred from the water supply pipe 100 to the water flowing through the water supply pipe 100, thus heating the water. By placing the heating element 200 outside the water supply pipe 100, the heating element 200 is isolated from the water, and the water and electricity do not come into contact, which improves safety. In addition, the heating element 200 is not easily corroded by water, which increases its service life. Furthermore, placing the heating element 200 outside the water supply pipe 100 can also reduce water resistance.

[0045] In some embodiments, the heating element 200 surrounds the water pipe 100 circumferentially. With this arrangement, the heat emitted by the heating element 200 can be evenly transferred to the water pipe 100, thereby achieving uniform heating of the water flowing through the water pipe 100. For example, each water pipe 100 can be surrounded by the heating element 200, and each water pipe 100 can be heated individually.

[0046] In some embodiments, the heating element 200 is a thick film heater and is sintered on the outer wall of the water pipe 100. By setting it in this way, the heat transfer path between the heating element 200 and the water pipe 100 is greatly shortened, heat loss is reduced, and energy conversion efficiency is improved. Under the same heating effect, the thick film heater can reduce the consumption of electrical energy and save electricity costs.

[0047] To facilitate water entry into each water pipe 100, in some embodiments, combined with Figures 1 to 4 As shown, the auxiliary heating device includes an inlet manifold 300, and the inlet ends of multiple water pipes 100 are respectively connected to the inlet manifold 300 so that the multiple water pipes 100 are respectively connected to the inlet manifold 300. The inlet manifold 300 is provided with an inlet connector 500.

[0048] The inlet connector 500 connects to the water supply circuit of the heat pump equipment. Water enters the inlet manifold 300 through the inlet connector 500 and then flows to each water delivery pipe 100. Optionally, the inlet manifold 300 can be provided with multiple first interfaces. The inlet end of the water delivery pipe 100 is connected to the first interface to realize the connection between the inlet manifold 300 and the water delivery pipe 100. The inlet manifold 300 and the water delivery pipe 100 can be connected together by welding, crimping, etc. to achieve a seal. Of course, other connection methods such as plug-in connection can also be used to achieve the connection. A sealing ring can be provided between the inlet manifold 300 and the water delivery pipe 100 to achieve a seal.

[0049] Similarly, the outlet ends of each water pipe 100 can also be connected using a similar scheme. In some embodiments, combined with Figures 1 to 4 As shown, the auxiliary heating device includes a water outlet manifold 400, and the outlet ends of multiple water supply pipes 100 are respectively connected to the water outlet manifold 400 so that the multiple water supply pipes 100 are respectively connected to the water outlet manifold 400. The water outlet manifold 400 is provided with a water outlet connector 600.

[0050] Water flows from each water supply pipe 100 to the outlet manifold 400, and then exits from the outlet connector 600, which connects to the outlet water circuit of the heat pump equipment. Optionally, the outlet manifold 400 may be provided with multiple second interfaces, and the outlet end of the water supply pipe 100 is connected to the second interface to achieve the connection between the water supply pipe 100 and the outlet manifold 400. The water supply pipe 100 and the outlet manifold 400 can be connected together by welding, crimping, or other methods to achieve a seal. Of course, other connection methods such as plug-in connection can also be used, and a sealing ring can be provided between the water supply pipe 100 and the outlet manifold 400 to achieve a seal.

[0051] In some embodiments, combined with Figure 4 As shown, the inlet manifold 300 and the outlet manifold 400 extend along the first direction, and the water supply pipe 100 extends between the inlet manifold 300 and the outlet manifold 400, and multiple water supply pipes 100 are arranged along the first direction.

[0052] The inlet manifold 300 and the outlet manifold 400 extend along the first direction respectively (see the first direction). Figure 4 (in the left and right direction), so that the inlet manifold 300 and the outlet manifold 400 are basically parallel. Based on this, the water supply pipe 100 is extended between the inlet manifold 300 and the outlet manifold 400, which can avoid excessive twisting of the water supply pipe 100, simplify the structure of the auxiliary heating device, and make the auxiliary heating device easier to manufacture.

[0053] Because water needs to first enter the inlet manifold 300 and then be distributed to each water delivery pipe 100, and after flowing out of each water delivery pipe 100, the water needs to re-recognize in the outlet manifold 400, in order to reduce the uneven distribution of water in each water delivery pipe 100, in some embodiments, combined with Figure 4 As shown, the inlet connector 500 is located at one end of the inlet manifold 300, and the other end of the inlet manifold 300 is the first sealing end 310; the outlet connector 600 is located at one end of the outlet manifold 400, and the other end of the outlet manifold 400 is the second sealing end 410; the direction from the inlet connector 500 to the first sealing end 310 is opposite to the direction from the outlet connector 600 to the second sealing end 410.

[0054] See Figure 4 As shown in the diagram, the first direction is left-right. The inlet connector 500 is located at the right end of the inlet manifold 300, and the left end of the inlet manifold 300 forms the first sealing end 310. The outlet connector 600 is located at the left end of the outlet manifold 400, and the right end of the outlet manifold 400 forms the second sealing end 410. Thus, the direction from the inlet connector 500 to the first sealing end 310 is from right to left, and the direction from the outlet connector 600 to the second sealing end 410 is from left to right. When water enters from the inlet connector 500 and finally exits from the outlet connector 600, the flow path of the water flowing through each water pipe 100 is basically the same. This can prevent uneven water distribution to a certain extent, making the water heat more evenly and avoiding dry burning of the heating element 200.

[0055] Optionally, multiple water pipes 100 are arranged at equal intervals along the first direction, so that the water is more evenly distributed in each water pipe 100.

[0056] The water inlet connector 500 is located at one end of the water inlet manifold 300. The axial direction of the water inlet connector 500 relative to the water inlet manifold 300 can be arbitrary, as long as water can enter the water inlet manifold 300 from the water inlet connector 500. For example, the axial direction of the water inlet connector 500 can be designed to intersect with the extending direction of the water inlet manifold 300. However, in this case, water needs to bend when entering the water inlet manifold 300 from the water inlet connector 500, increasing resistance and generating noise. In some embodiments, combined with... Figure 4 As shown, the water inlet connector 500 and the water inlet manifold 300 are coaxially arranged, so that the axial direction of the water inlet connector 500 is in the same direction as the extension direction of the water inlet manifold 300. Water can enter the water inlet manifold 300 from the water inlet connector 500 without turning, reducing resistance and noise.

[0057] Similarly, in some embodiments, combined with Figure 4As shown, the water outlet connector 600 and the water outlet manifold 400 are coaxially arranged, so that the axial direction of the water outlet connector 600 is in the same direction as the extension direction of the water outlet manifold 400. Water can enter the water outlet connector 600 from the water outlet manifold 400 without turning, reducing resistance and noise.

[0058] Based on the fact that the inlet connector 500 and the inlet manifold 300 are coaxially arranged, and the outlet connector 600 and the outlet manifold 400 are coaxially arranged, in some embodiments, combined with Figure 4 As shown, the orientation of the inlet connector 500 is opposite to that of the outlet connector 600. This helps to simplify the design of the water circuit, reduce structural complexity, and facilitate the uniform distribution of water in each water pipe 100.

[0059] In some embodiments, combined with Figure 5 As shown, the auxiliary heating device includes a housing 710, which encloses the water pipe 100, and the heating element 200 is located outside the water pipe 100 and inside the housing 710.

[0060] In addition to heating, heat pump equipment also has a cooling function. When the heat pump is in cooling mode, cold water also needs to flow through the auxiliary heating device. That is, cold water needs to flow from the inlet connector 500 into the inlet manifold 300, then be distributed to each water delivery pipe 100, and then flow out from each water delivery pipe 100 into the outlet manifold 400, and finally be discharged through the outlet connector 600. During this process, the heating element 200 does not work. When the heat pump is in cooling mode, the temperature outside the water delivery pipe 100 is low, and external water vapor easily condenses into condensate at low temperatures. If the condensate comes into contact with live components, such as the heating element 200 located outside the water delivery pipe 100 as mentioned above, there will be a safety hazard. This could cause the heating element 200 to connect to the ground when it is working, resulting in the heat pump tripping.

[0061] Therefore, in this embodiment, the auxiliary heating device includes a housing 710 that encloses the water supply pipe 100, and a heating element 200 is disposed between the housing 710 and the water supply pipe 100. The housing 710 creates a sealed space between the housing 710 and the water supply pipe 100, making it difficult for external moisture to enter the space between them, thus reducing condensation. This effectively reduces the risk of frequent tripping accidents caused by condensation contacting the heating element 200 or other live components. Optionally, one end of the housing 710 can be connected to the inlet manifold 300 for sealing, and the other end can be connected to the outlet manifold 400 for sealing, thus enclosing the water supply pipe 100.

[0062] Furthermore, the auxiliary heating device includes a heat insulation layer 720, which is disposed between the housing 710 and the heating element 200. The heat insulation layer 720 has a certain heat isolation capability. The heat insulation layer 720 can be a composite silicate material, asbestos, etc. Located between the housing 710 and the heating element 200, the heat insulation layer 720 can prevent heat transfer to the housing 710 and subsequent dissipation to the outside, which is more conducive to heating the water flowing through the water pipe 100 and helps improve energy efficiency. In addition, the heat insulation layer 720 also occupies space between the housing 710 and the water pipe 100, thus reducing the air content between them and further reducing the formation of condensate.

[0063] For multiple water pipes 100, there can be multiple housings 710, with each housing 710 corresponding to one of the multiple water pipes 100. Alternatively, the housings 710 can enclose the multiple water pipes 100, simplifying the structure.

[0064] In some embodiments, the housing 710 is adapted for heat shrinkage deformation, i.e., the housing 710 is made of a heat-shrinkable material, such as a polymer material. Thus, before the auxiliary heating device is assembled, the housing 710 can be slightly larger to facilitate fitting onto the water pipe 100. The housing 710 is then heat-treated to shrink, causing it to fit tightly against the insulation layer 720. Furthermore, the housing 710 undergoes initial melting during heat treatment, facilitating material and chemical bonding with the inlet manifold 300 and the outlet manifold 400, thus aiding in achieving a seal.

[0065] In some embodiments, combined with Figures 6 to 9 As shown, the auxiliary heating device includes an inlet connector 500 and an outlet connector 600. Multiple water pipes 100 extend between the inlet connector 500 and the outlet connector 600 and are arranged around a central axis 800. The inlet ends of the multiple water pipes 100 are connected to the inlet connector 500, and the outlet ends of the multiple water pipes 100 are connected to the outlet connector 600.

[0066] The inlet connector 500 is connected to the water supply circuit of the heat pump equipment. Water flows through the inlet connector 500 to each water pipe 100 and then flows out from the outlet connector 600. In this embodiment, multiple water pipes 100 extend between the inlet connector 500 and the outlet connector 600 and are arranged around a central axis 800. The central axis 800 can be a virtual axis defined by an individual. This makes the arrangement of multiple water pipes 100 more compact and helps to reduce the space occupied in the radial direction (the extension direction of the water pipe 100 can be regarded as the axial direction, and the radial direction is perpendicular to the axial direction). Especially when there are many water pipes 100, multiple water pipes 100 can be arranged equidistantly around the same center on the same radius circle (the center of the circle around which multiple water pipes 100 are located on the central axis 800), which is more conducive to reducing the space occupied and can lay the foundation for water diversion.

[0067] For example, the water inlet connector 500 includes a water inlet 510 and a plurality of water inlet outlets 522 respectively connected to the water inlet 510. The plurality of water inlet outlets 522 are connected to the water inlet ends of the plurality of water supply pipes 100 one by one. The plurality of water inlet outlets 522 are arranged equidistantly around the same center on the same radius circle, and the center of the circle around which the plurality of water inlet outlets 522 are arranged is coaxial with the center of the circle around which the plurality of water supply pipes 100 are arranged. The water outlet connector 600 includes a water outlet 610 and a plurality of water outlet inlets 622 respectively connected to the water outlet 610. The plurality of water outlet inlets 622 are connected to the water outlet ends of the plurality of water supply pipes 100 one by one. The plurality of water outlet inlets 622 are arranged equidistantly around the same center on the same radius circle, and the center of the circle around which the plurality of water outlet inlets 622 are arranged is coaxial with the center of the circle around which the plurality of water supply pipes 100 are arranged.

[0068] When water enters the inlet connector 500 through the inlet 510, it flows out through multiple inlet outlets 522, thus entering each water supply pipe 100. Then, it enters the outlet connector 600 through the corresponding outlet inlet 622 and is finally discharged. Since the multiple inlet outlets 522 are equidistantly arranged around the same center on the same radius circle, and the multiple outlet inlets 622 are equidistantly arranged around the same center on the same radius circle, the flow path of the water through each water supply pipe 100 is basically the same when the water enters from the inlet 510 and exits from the outlet 610. This can prevent uneven water distribution to a certain extent, making the water heat more evenly and avoiding the dry burning of the heating element 200.

[0069] In some embodiments, combined with Figures 6 to 16As shown, the water inlet connector 500 includes a water inlet 510 and a plurality of first water passages 520. The plurality of first water passages 520 correspond one-to-one with a plurality of water supply pipes 100. One end of the first water passage 520 forms a first water outlet 521 that communicates with the water inlet 510, and the other end forms a water outlet 522 that communicates with the water inlet end of the water supply pipe 100. The water inlet connector 500 is provided with a first baffle 540, which separates the plurality of first water outlets 521 from each other.

[0070] Water enters the inlet connector 500 through the inlet 510, then flows towards the first water passage 520. The water then enters the first water passage 520 through the first water outlet 521 and exits through the inlet outlet 522 into the water supply pipe 100. By providing a first baffle 540 within the inlet connector 500, the multiple first water outlets 521 are separated from each other. Thus, the first baffle 540 creates a certain flow diversion effect on the water entering the inlet connector 500, further reducing the flow rate difference between the various water supply pipes 100. Furthermore, the first baffle 540 also strengthens the structural strength of the inlet connector 500.

[0071] Based on the first baffle 540 separating the multiple first water outlets 521 from each other, optionally, combined with Figures 9 to 13 As shown, at least a portion of the first baffle 540 is located upstream of the first water outlet 521, meaning that the water first comes into contact with the first baffle 540 and is diverted by the first baffle 540 before flowing through the first water outlet 521, thus improving the water diversion effect.

[0072] In some embodiments, combined with Figures 11 to 13 As shown, an inlet confluence channel 530 is formed between the first baffle 540 and the inlet 510. The inlet connector 500 is used to connect to the water supply circuit of the heat pump equipment. When water enters the inlet connector 500 from the water supply circuit, the water delivery may fluctuate due to changes in the pipeline or other factors. By forming an inlet confluence channel 530 between the first baffle 540 and the inlet 510, the water can mix in the inlet confluence channel 530, achieving a stable flow effect and laying the foundation for uniform water distribution.

[0073] In some embodiments, combined with Figures 6 to 16 As shown, the water outlet connector 600 includes a water outlet 610 and a plurality of second water passages 620. The plurality of second water passages 620 correspond one-to-one with a plurality of water supply pipes 100. One end of the second water passage 620 forms a water outlet 622 that communicates with the water outlet end of the water supply pipe 100, and the other end forms a second water outlet 621 that communicates with the water outlet 610. The water outlet connector 600 is provided with a second baffle 640, which separates the plurality of second water outlets 621 from each other.

[0074] When water flows out of each water pipe 100, it enters the second water passage 620 through the corresponding water inlet 622, and then flows to the water outlet 610 through the second water outlet 621, finally being discharged into the water outlet circuit of the heat pump equipment. By setting a second baffle 640 in the water outlet connector 600, the second baffle 640 separates the multiple second water outlets 621 from each other. In this way, when water is discharged from each second water passage 620, it is diverted by the second baffle 640, avoiding mutual interference between the water discharged from each second water passage 620 and affecting the water flow in some water pipes 100. This helps to ensure uniform water flow in each water pipe 100. In addition, the setting of the second baffle 640 also strengthens the structural strength of the water outlet connector 600.

[0075] The second baffle 640 separates the multiple second water outlets 621 from each other. Optionally, in some embodiments, it is combined with... Figure 9 , Figure 10 as well as Figures 14 to 16 As shown, at least a portion of the second baffle 640 is located downstream of the second water outlet 621, meaning that the water remains separated by the second baffle 640 after leaving the second water outlet 621, further preventing mutual interference when the water flows out of the second water outlet 621.

[0076] In some embodiments, combined with Figures 14 to 16 As shown, a water outlet confluence channel 630 is formed between the second baffle 640 and the water outlet 610. The water outlet connector 600 is used to connect to the water outlet circuit of the heat pump equipment. By forming the water outlet confluence channel 630 between the second baffle 640 and the water outlet 610, water can mix in the water outlet confluence channel 630, which has a stabilizing effect and reduces the impact on the water outlet circuit of the heat pump equipment.

[0077] In some embodiments, combined with Figure 10 As shown, the auxiliary heating device includes a housing 710, which encloses a plurality of water pipes 100. The heating element 200 is located outside the water pipes 100 and inside the housing 710.

[0078] In addition to heating, heat pump equipment also has a cooling function. When the heat pump is in cooling mode, cold water also needs to flow through the auxiliary heating device. That is, the cold water needs to flow in from the inlet connector 500, then be distributed to each water supply pipe 100, and then flow out from each water supply pipe 100 to be discharged through the outlet connector 600. During this process, the heating element 200 does not work. When the heat pump is in cooling mode, the temperature outside the water supply pipe 100 is low, and external water vapor easily condenses into condensate at low temperatures. If the condensate comes into contact with live components, such as the heating element 200 located outside the water supply pipe 100 as mentioned above, it will pose a safety hazard, causing the heating element 200 to connect to ground when it is working, resulting in the heat pump equipment tripping.

[0079] Therefore, in this embodiment, the auxiliary heating device includes a housing 710, which encloses multiple water pipes 100. A heating element 200 is disposed between the housing 710 and the water pipes 100. The housing 710 creates a sealed space between the housing 710 and the water pipes 100, making it difficult for external moisture to enter the space between them, thus reducing condensation. This effectively reduces the risk of frequent tripping accidents caused by condensation contacting the heating element 200 or other live components. Optionally, one end of the housing 710 can be connected to the inlet connector 500 for sealing, and the other end can be connected to the outlet connector 600 for sealing, thus enclosing the water pipes 100.

[0080] Furthermore, the auxiliary heating device includes a heat insulation layer 720, which is disposed between the housing 710 and the heating element 200. The heat insulation layer 720 has a certain heat isolation capability. The heat insulation layer 720 can be a composite silicate material, asbestos, etc. Located between the housing 710 and the heating element 200, the heat insulation layer 720 can prevent heat transfer to the housing 710 and subsequent dissipation to the outside, which is more conducive to heating the water flowing through the water pipe 100 and helps improve energy efficiency. In addition, the heat insulation layer 720 also occupies space between the housing 710 and the water pipe 100, thus reducing the air content between them and further reducing the formation of condensate.

[0081] In some embodiments, combined with Figure 9 As shown, one of the water inlet connector 500 and the water outlet connector 600 is integrally formed with the housing 710. For example, the water inlet connector 500 and the housing 710 can be integrally injection molded, while the water outlet connector 600 and the housing 710 are connected by screws, welding, or other methods. A sealing ring can be provided between the water outlet connector 600 and the housing 710. This arrangement improves the sealing performance between the water inlet connector 500 / 600 and the housing 710, reduces the number of parts, and facilitates assembly. Alternatively, the water outlet connector 600 and the housing 710 can be integrally formed, while the water inlet connector 500 and the housing 710 can be connected by screws, welding, or other methods, with a sealing ring provided between them.

[0082] The second aspect of this application discloses a heat pump device. In some embodiments, the heat pump device includes an auxiliary heating device, which includes a water supply pipe 100 and a heating element 200. The water supply pipe 100 is adapted to supply water, and the heating element 200 is adapted to heat the water flowing through the water supply pipe 100. The number of water supply pipes 100 is multiple, and the multiple water supply pipes 100 are arranged in parallel.

[0083] In this embodiment, multiple water pipes 100 are connected in parallel, which can appropriately slow down the flow rate of water through the water pipes 100 and improve the heating effect of the heating element 200 on the water. Compared with forming a single water path in the auxiliary heating device, multiple parallel water pipes 100 can reduce the water resistance generated, which is suitable for the high flow rate operation of the heat pump equipment. It is understood that the auxiliary heating device of the heat pump equipment in this embodiment adopts the technical solution of the above embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "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 this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0085] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An auxiliary heating device, characterized in that, The auxiliary heating device includes a water supply pipe (100) and a heating element (200). The water supply pipe (100) is adapted to supply water, and the heating element (200) is adapted to heat the water flowing through the water supply pipe (100). There are multiple water supply pipes (100), and multiple water supply pipes (100) are arranged in parallel.

2. The auxiliary heating device as described in claim 1, characterized in that, The heating element (200) is located outside the water pipe (100).

3. The auxiliary heating device as described in claim 2, characterized in that, The heating element (200) surrounds the water pipe (100) circumferentially; And / or, the heating element (200) is a thick film heater and is sintered on the outer wall of the water pipe (100).

4. The auxiliary heating device as described in claim 1, characterized in that, The auxiliary heating device includes an inlet manifold (300), and the inlet ends of a plurality of water supply pipes (100) are respectively connected to the inlet manifold (300) so that the plurality of water supply pipes (100) are respectively connected to the inlet manifold (300). The inlet manifold (300) is provided with an inlet connector (500).

5. The auxiliary heating device as described in claim 4, characterized in that, The auxiliary heating device includes a water outlet manifold (400), and the outlet ends of a plurality of water supply pipes (100) are respectively connected to the water outlet manifold (400) so that the plurality of water supply pipes (100) are respectively connected to the water outlet manifold (400). The water outlet manifold (400) is provided with a water outlet connector (600).

6. The auxiliary heating device as described in claim 5, characterized in that, The inlet manifold (300) and the outlet manifold (400) extend along a first direction, the water supply pipe (100) extends between the inlet manifold (300) and the outlet manifold (400), and a plurality of the water supply pipes (100) are arranged along the first direction.

7. The auxiliary heating device as described in claim 6, characterized in that, The water inlet connector (500) is located at one end of the water inlet manifold (300), and the other end of the water inlet manifold (300) is the first sealing end (310); The water outlet connector (600) is located at one end of the water outlet manifold (400), and the other end of the water outlet manifold (400) is the second sealing end (410); The direction from the inlet connector (500) to the first sealing end (310) is opposite to the direction from the outlet connector (600) to the second sealing end (410).

8. The auxiliary heating device as described in claim 7, characterized in that, The plurality of water pipes (100) are arranged at equal intervals along the first direction; And / or, the water inlet connector (500) is coaxially arranged with the water inlet manifold (300); And / or, the water outlet connector (600) is coaxially arranged with the water outlet manifold (400); And / or, the orientation of the inlet connector (500) is opposite to the orientation of the outlet connector (600).

9. The auxiliary heating device as described in claim 4, characterized in that, The auxiliary heating device includes a housing (710) that encloses the water pipe (100), and the heating element (200) is located outside the water pipe (100) and inside the housing (710).

10. The auxiliary heating device as described in claim 9, characterized in that, The housing (710) encloses a plurality of the water pipes (100); And / or, the housing (710) is adapted for heat shrinking deformation; And / or, the auxiliary heating device includes a heat insulation layer (720) disposed between the housing (710) and the heating element (200).

11. The auxiliary heating device as described in claim 1, characterized in that, The auxiliary heating device includes an inlet connector (500) and an outlet connector (600). A plurality of water supply pipes (100) extend between the inlet connector (500) and the outlet connector (600) and are arranged around a central axis (800). The inlet ends of the plurality of water supply pipes (100) are respectively connected to the inlet connector (500), and the outlet ends of the plurality of water supply pipes (100) are respectively connected to the outlet connector (600).

12. The auxiliary heating device as described in claim 11, characterized in that, Multiple water pipes (100) are arranged at equal intervals around the same center on a circle of the same radius.

13. The auxiliary heating device as described in claim 12, characterized in that, The water inlet connector (500) includes a water inlet (510) and a plurality of water inlet outlets (522) respectively connected to the water inlet (510). The plurality of water inlet outlets (522) are connected to the water inlet ends of the plurality of water supply pipes (100) in a one-to-one correspondence. The plurality of water inlet outlets (522) are arranged equidistantly on a circle of the same radius around the same center, and the center of the circle around the plurality of water inlet outlets (522) is coaxial with the center of the circle around the plurality of water supply pipes (100). The water outlet connector (600) includes a water outlet (610) and a plurality of water inlets (622) respectively connected to the water outlet (610). The plurality of water inlets (622) are connected to the water outlet ends of the plurality of water supply pipes (100) in a one-to-one correspondence. The plurality of water inlets (622) are arranged equidistantly on a circle of the same radius around the same center, and the center of the circle around which the plurality of water inlets (622) are arranged is coaxial with the center of the circle around which the plurality of water supply pipes (100) are arranged.

14. The auxiliary heating device as described in claim 11, characterized in that, The water inlet connector (500) includes a water inlet (510) and a plurality of first water passages (520). The plurality of first water passages (520) correspond one-to-one with the plurality of water supply pipes (100). One end of the first water passage (520) is formed with a first water outlet (521) communicating with the water inlet (510), and the other end is formed with a water outlet (522) communicating with the water inlet end of the water supply pipe (100). The water inlet connector (500) is provided with a first baffle (540), which separates the plurality of first water outlets (521) from each other.

15. The auxiliary heating device as described in claim 14, characterized in that, At least a portion of the first baffle (540) is located upstream of the first water outlet (521); And / or, the first baffle (540) and the water inlet (510) form a water inlet confluence channel (530).

16. The auxiliary heating device as described in claim 11, characterized in that, The water outlet connector (600) includes a water outlet (610) and a plurality of second water passages (620). The plurality of second water passages (620) correspond one-to-one with the plurality of water supply pipes (100). One end of the second water passage (620) is formed with a water inlet (622) that communicates with the water outlet end of the water supply pipe (100), and the other end is formed with a second water outlet (621) that communicates with the water outlet (610). The water outlet connector (600) is provided with a second baffle (640), which separates the plurality of second water outlets (621) from each other.

17. The auxiliary heating device as described in claim 16, characterized in that, At least a portion of the second baffle (640) is located downstream of the second water outlet (621); And / or, the second baffle (640) and the outlet (610) form an outlet confluence channel (630).

18. The auxiliary heating device as described in claim 11, characterized in that, The auxiliary heating device includes a housing (710) that encloses a plurality of water pipes (100), and the heating element (200) is located outside the water pipes (100) and inside the housing (710).

19. The auxiliary heating device as described in claim 18, characterized in that, One end of the housing (710) is connected to the water inlet connector (500), and the other end of the housing (710) is connected to the water outlet connector (600).

20. The auxiliary heating device as described in claim 19, characterized in that, One of the water inlet connector (500) and the water outlet connector (600) is integrally formed with the housing (710).

21. The auxiliary heating device as described in claim 18, characterized in that, The auxiliary heating device includes a heat insulation layer (720) disposed between the housing (710) and the heating element (200).

22. A heat pump device, characterized in that, The heat pump device includes the auxiliary heating device as described in any one of claims 1 to 21.

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