Pneumatic-electric complementary heat pump

Abstract

The pneumatic-electric complementary heat pump comprises a machine body, a water pan is arranged in the machine body, and a plurality of drainage holes are formed in the bottom of the water pan; at least one first electric tracing band; the first electric tracing band is arranged in the water pan and surrounds the plurality of drainage holes; a second electric tracing band; the second electric tracing band is located in the drainage hole and attached to the inner wall of the drainage hole. The first electric tracing band is arranged on the peripheries of the multiple drainage holes, the phenomenon of freezing in the water receiving disc in the low-temperature cold environment is reduced in the mode that heating is conducted in the water receiving disc through the first electric tracing band, and condensate water in the water receiving disc can be smoothly drained out of the machine body. A second electric tracing band is arranged in the drainage hole, so that the drainage hole is directly heated; even if the water drainage hole is iced, ice in the water pan can be melted and discharged through cooperation of the second electric tracing band and the first electric tracing band.

Description

Technical Field

[0001] This application relates to the field of heat pump technology, and more particularly to a gas-electric complementary heat pump. Background Technology

[0002] Conventional air source heat pumps use a drip tray and water pipes below the evaporator fins to guide and drain defrosting condensate. However, in cold environments, a large amount of defrosting condensate flows through the drip tray and water pipes and quickly freezes, causing blockages in the pipes. The drip tray and water pipes then lose their function of guiding and draining condensate, and the condensate that cannot drain from the drip tray overflows. The overflowing condensate randomly intrudes into the main components below the unit and freezes, affecting the unit's operation.

[0003] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a gas-electric complementary heat pump that addresses the above-mentioned deficiencies of the prior art, aiming to solve the problem of water pan freezing in cold environments, which affects the normal operation of the heat pump.

[0005] The technical solution adopted by this application to solve the technical problem is as follows:

[0006] A gas-electric complementary heat pump includes a body, a water receiving tray inside the body, and multiple drain holes at the bottom of the water receiving tray. It also includes:

[0007] At least one first electric heating tape; the first electric heating tape is disposed in the water receiving tray and arranged around a plurality of drain holes;

[0008] The second electric heating cable is located inside the drain hole and is attached to the inner wall of the drain hole.

[0009] The gas-electric complementary heat pump, wherein the water receiving tray includes:

[0010] Base plate; the base plate is annular; the drainage hole is located on the base plate;

[0011] An inner sidewall is disposed on the inner side of the base plate and extends upward relative to the base plate; the inner sidewall is arranged in a closed loop around the base plate.

[0012] An outer wall is disposed on the outer side of the base plate and extends upward relative to the base plate; the outer wall is arranged in a closed loop around the base plate; the first electric heating tape is located between the inner wall and the outer wall and is in contact with the base plate.

[0013] In the gas-electric complementary heat pump, both the inner and outer sidewalls slope inward from top to bottom to form a funnel-shaped structure with the base plate.

[0014] The gas-electric complementary heat pump further includes:

[0015] A partition is installed inside the machine body and located above the water receiving tray;

[0016] The partition is provided with a plurality of drainage holes; the plurality of drainage holes are arranged sequentially along the perimeter of the partition and correspond to the bottom plate.

[0017] The gas-electric complementary heat pump further includes:

[0018] The water collection pipe is connected to all the drain holes; the water collection pipe is arranged at an angle, and the upper end of the water collection pipe is lower than the drain holes.

[0019] The gas-electric complementary heat pump further includes:

[0020] The third electric heating tape is installed on the water collection pipe.

[0021] The gas-electric complementary heat pump further includes:

[0022] The exhaust pipe is vertically installed at the top of the machine body; the outlet of the exhaust pipe is arranged upward and is higher than the fan at the top of the machine body.

[0023] In the gas-electric complementary heat pump, the height difference between the outlet of the exhaust pipe and the fan height at the top of the unit is greater than or equal to 500 mm.

[0024] The gas-electric complementary heat pump further includes:

[0025] A water supply pipe is connected to both the machine body and the user terminal to supply water to the user terminal through the machine body;

[0026] A return water pipe is connected to both the machine body and the user terminal, so that water can be supplied to the machine body through the user terminal;

[0027] The water supply pipe is connected at one end to the return water pipe and at the other end to an external water source.

[0028] A normally closed electric valve is installed on the water supply pipe.

[0029] The gas-electric complementary heat pump further includes:

[0030] The outlet pipe is connected at one end to the supply pipe;

[0031] A normally open electric valve is installed on the water outlet pipe.

[0032] Beneficial effects: In this application, the first electric heating tape is arranged around the periphery of the multiple drainage holes. By heating the water collection tray through the first electric heating tape, the phenomenon of ice formation in the water collection tray under low-temperature and cold environments is reduced, allowing the condensate in the water collection tray to be smoothly discharged to the outside of the machine. The second electric heating tape is installed inside the drainage holes, which directly heats the drainage holes; even if ice has formed at the drainage holes, the cooperation between the second and first electric heating tapes can melt the ice in the water collection tray and drain it. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the gas-electric complementary heat pump described in this application;

[0034] Figure 2 This is a schematic diagram of the distribution structure of the water receiving tray and the partition plate described in this application;

[0035] Figure 3 This is an exploded structural diagram of the partition and the water receiving tray described in this application;

[0036] Figure 4 This is a schematic diagram of the structure of the machine body described in this application connected to the water collection pipe via the drain pipe;

[0037] Figure 5 This is a first view of the assembly structure of the heat pump unit and the water collection pipe in this application;

[0038] Figure 6 This is a second view of the assembly structure of the heat pump unit and the water collection pipe in this application;

[0039] Figure 7 This is a schematic diagram of the assembly structure of the exhaust pipe and the body described in this application;

[0040] Figure 8 This is a schematic diagram of the water circulation loop structure formed between the water supply pipe and the return pipe described in this application between the machine body and the user end. Detailed Implementation

[0041] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0042] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0043] This application provides a gas-electric complementary heat pump, such as Figure 1 and Figure 3 As shown, the gas-electric complementary heat pump includes: a body 1, a water receiving tray 2, at least one first electric heating tape 3, and a second electric heating tape; the water receiving tray 2 is disposed inside the body 1, and a plurality of drain holes 5 are disposed at the bottom of the water receiving tray 2; the first electric heating tape 3 is disposed inside the water receiving tray 2 and arranged around the plurality of drain holes 5; the second electric heating tape is located inside the drain holes 5 and is in contact with the inner wall of the drain holes 5.

[0044] Specifically, the water receiving tray 2 is installed inside the body 1, and a plurality of the drain holes 5 are located at the bottom of the water receiving tray 2 and are connected to the outside through the drain pipe 8, thereby draining the condensate collected in the water receiving tray 2 to the outside of the body 1.

[0045] The condensate collected in the water receiving tray 2 is discharged outward from the drain hole 5. When the drain hole 5 freezes, it will cause the drain pipe 8 to become blocked. Therefore, in this application, the first electric heating tape 3 is arranged around the multiple drain holes 5. By heating the water receiving tray 2 through the first electric heating tape 3, the phenomenon of freezing in the water receiving tray 2 in low-temperature and cold environments is reduced, so that the condensate in the water receiving tray 2 can be smoothly discharged to the outside of the body 1.

[0046] The second electric heating tape is installed inside the drain hole 5, which directly heats the drain hole 5. Even if ice has formed in the drain hole 5, the ice in the water receiving tray 2 can be melted and discharged through the cooperation of the second electric heating tape and the first electric heating tape 3.

[0047] It is understood that the first electric heating cable 3 and the second electric heating cable can be turned on before the room temperature or temperature drops; or even if cold weather has arrived, they can be turned on before the condensate in the drip tray 2 freezes, thereby effectively preventing the condensate from freezing and causing leakage. The first electric heating cable 3 and the second electric heating cable can be selectively turned on according to actual needs, either by turning on only one or both.

[0048] One embodiment of this application, such as Figure 3 As shown, the water receiving tray 2 includes a base plate 21, an inner side wall 22, and an outer side wall 23; the base plate 21 is annular, and the drain hole 5 is located on the base plate 21; the inner side wall 22 is disposed on the inner side of the base plate 21 and extends upward relative to the base plate 21; the inner side wall 22 is arranged in a closed loop around the base plate 21; the outer side wall 23 is disposed on the outer side of the base plate 21 and extends upward relative to the base plate 21; the outer side wall 23 is arranged in a closed loop around the base plate 21; the first electric heating tape is located between the inner side wall 22 and the outer side wall 23 and is in contact with the base plate 21.

[0049] Specifically, the water receiving tray 2 is provided with the drainage hole 5 through the base plate 21, and the inner side wall 22 and the outer side wall 23 are arranged around the inner and outer sides of the base plate 21 to block and increase the height of the outer perimeter of the base plate 21, so that the water receiving tray 2 has a certain water storage function and will not leak condensate at any time.

[0050] There are multiple first electric heating cables 3, which are arranged in multiple rings within the water receiving tray 2, all along the same plane. The first electric heating cables 3 are in contact with the base plate 21, thereby better transferring heat to the base plate 21 and improving the efficiency of dissolving the drain hole 5.

[0051] The inventors of this application discovered that if the drip tray has a flat base and the drain hole is often located near the outer edge of the base, the condensate at the bottom of the drip tray does not easily flow to the drain hole. Instead, it accumulates to a certain height before overflowing smoothly. In this application, because the base 21 is annular, the drip tray 2 forms a hollow annular structure. This allows the condensate to be concentrated by the inner wall 22 and the outer wall 23 and brought closer to the drain hole 5, reducing the accumulation of condensate on the base 21 and thus improving drainage efficiency.

[0052] In one embodiment of this application, without excluding the external components of the water receiving pan 2, multiple electric heating tapes can be provided around the periphery of the side wall 22 to work in conjunction with the first electric heating tape 3 and the second electric heating tape when the water receiving pan 2 freezes, so as to melt the ice faster and further reduce the risk of ice overflow in the water receiving pan 2.

[0053] like Figure 3 As shown, both the inner wall 22 and the outer wall 23 are inclined inward from top to bottom to form a funnel-shaped structure with the bottom plate 21.

[0054] Specifically, the inner wall 22 and the base plate 21, and the outer wall 23 and the base plate 21 are not perpendicular, but rather inclined. The inner wall 22 slopes inward from top to bottom, and the outer wall 23 slopes inward from top to bottom as well. This results in the inner wall 22, the outer wall 23, and the base plate 21 forming a funnel-shaped structure. The water receiving tray 2 is wider at the top and narrower at the bottom. The inner wall 22 and the outer wall 23 guide the condensate downward, providing a certain flow guidance effect and further improving the drainage efficiency of the water receiving tray 2.

[0055] One embodiment of this application, such as Figure 2 and Figure 3 As shown, the gas-electric complementary heat pump also includes a partition plate 4, which is disposed inside the body 1 and located above the water receiving tray 2; the partition plate 4 is provided with a plurality of water leakage holes 41; the plurality of water leakage holes 41 are arranged sequentially along the perimeter of the partition plate 4 and correspond to the bottom plate 21.

[0056] Specifically, each of the drainage holes 41 is a square drainage hole, and the four corners of the drainage hole 41 are rounded. The partition plate 4 is placed above the water receiving tray 2, and the position of the drainage hole 41 corresponds exactly to the position of the bottom plate 21, so that the condensate drips onto the partition plate 4, flows down through the drainage hole 41, and falls into the funnel-shaped structure, and is then discharged from the drain hole 5.

[0057] In this embodiment, a baffle 4 is provided above the water receiving tray 2. The baffle 4 has a planar structure to first collect condensate. The baffle 4 can effectively prevent airflow or dust impurities inside the machine body from directly entering the water receiving tray 2, avoiding blockage of the drain hole 5 and ensuring smooth drainage. At the same time, condensate dripping directly onto the water receiving tray 2 may produce a "dripping sound" or impact noise, which is easily noticed, especially in quiet environments. The baffle 4 acts as a buffer, with water dripping onto the baffle 4 first and then flowing through the small drain hole 41 to the water receiving tray 2, which can greatly reduce this noise.

[0058] like Figure 4 As shown, the gas-electric complementary heat pump also includes a water collection pipe 7, which is connected to all drain holes 5; the water collection pipe 7 is arranged at an angle, and the high end of the water collection pipe 7 is lower than the drain holes 5.

[0059] Specifically, each of the drainage holes 5 is connected to a drainage pipe 8, and the water collection pipe 7 is connected to the corresponding drainage hole 5 through the drainage pipe 8. Furthermore, each drainage pipe 8 corresponding to the gas-electric complementary heat pump is connected to the water collection pipe 7, thereby achieving the connection between all the drainage holes 5 of the gas-electric complementary heat pump and the water collection pipe 7.

[0060] In this application, there are 6 drainage holes 5. The water collection pipe 7 is connected to each of the 6 drainage holes 5 in a one-to-one correspondence through 6 drainage pipes 8. The 6 drainage pipes 8 are arranged in pairs, with the lengths of adjacent pairs of drainage pipes 8 being unequal, and the lengths of the two drainage pipes 8 in the same pair being equal. Thus, the water collection pipe 7 is arranged at an angle and can be connected to all 6 drainage pipes 8.

[0061] Taking the six drainage holes 5 arranged in three groups along the length of the water receiving tray 2, and the water collection pipe 7 gradually sloping downwards from left to right as an example, the drainage pipes 8 connected to the two leftmost drainage holes 5 are of equal length and are the shortest; the drainage pipes 8 connected to the two rightmost drainage holes 5 are of equal length and are the longest.

[0062] For heat pump units, such as Figure 5 and Figure 6As shown, when the unit includes multiple units 1 arranged in an array, several units 1 located in the same row or column can all drain water through a single water collection pipe 7. Therefore, for multiple units 1 connected to the same water collection pipe 7, taking an arrangement of multiple units 1 from left to right and the water collection pipe 7 sloping downwards from left to right as an example, the drain pipe 8 corresponding to the leftmost unit 1 is the shortest, and the drain pipe 8 corresponding to the rightmost unit 1 is the longest. A water collection pool can be installed outside the heat pump unit, with the lowest end of the water collection pipe 7 extending into the water collection pool, thereby discharging the condensate drained from the water receiving pan 2 into the water collection pool.

[0063] The gas-electric complementary heat pump also includes a third electric heating tape, which is installed on the water collection pipe 7. The third electric heating tape is used to heat the water collection pipe 7 to prevent the water collection pipe 7 from freezing due to low temperature environment and thus being unable to drain.

[0064] like Figure 1 and Figure 7 As shown, the gas-electric complementary heat pump also includes a flue pipe 11, which is vertically installed on the top of the body 1; the outlet of the flue pipe 11 is arranged upward and is higher than the fan 10 at the top of the body 1.

[0065] Specifically, the top of the body 1 has a fan 10, and the exhaust pipe 11 is also located on the top of the body 1. The exhaust pipe 11 is arranged vertically, and its outlet is vertically upward. If the outlet of the exhaust pipe 11 is too low, close to the fins of the body 1 or the fan 10, the flue gas will be drawn into the fins. Since the sulfide gases in natural gas are emitted with the flue gas after combustion, the flue gas containing sulfides will corrode the fins when drawn into them, thus affecting the working performance of the gas-electric complementary heat pump. At the same time, since the flue gas contains a large amount of water vapor, the water vapor is prone to frost or ice formation after being drawn into the fins, which also has a negative impact on the working performance of the gas-electric complementary heat pump. Therefore, in this application, the outlet of the exhaust pipe 11 is arranged upward and higher than the fan 10 at the top of the body 1 to prevent the flue gas and water vapor discharged from the outlet of the exhaust pipe 11 from being drawn into the fins.

[0066] In one embodiment of this application, the height difference between the outlet of the exhaust pipe 11 and the top fan 10 of the gas-electric complementary heat pump is greater than or equal to 500mm. This ensures that the flue gas discharged from the outlet of the exhaust pipe 11 is not directly sucked in, thus avoiding waste gas backflow. At the same time, hot flue gas has a natural upward trend due to the buoyancy effect. If the outlet of the exhaust pipe 11 is too low, the hot flue gas may be around a vortex, affecting effective exhaust. The 500mm height difference ensures that the flue gas has enough space to rise and avoids gradients, ensuring more emissions.

[0067] like Figure 8 As shown ( Figure 8 (The middle arrow indicates the direction of water flow). The gas-electric complementary heat pump also includes: a water supply pipe 12, a water return pipe 13, a water replenishment pipe 14, and a normally closed electric valve 15; the water supply pipe 12 is connected to the machine body 1 and the user terminal 100 respectively, so as to supply water to the user terminal 100 through the machine body 1; the water return pipe 13 is connected to the machine body 1 and the user terminal 100 respectively, so as to return water to the machine body 1 through the user terminal 100; one end of the water replenishment pipe 14 is connected to the water return pipe 13, and the other end of the water replenishment pipe 14 is connected to an external water source; the normally closed electric valve 15 is installed on the water replenishment pipe 14.

[0068] Specifically, the machine body 1 and the user terminal 100 are connected by a water supply pipe 12 and a return water pipe 13. The machine body 1 supplies water to the user terminal 100 through the water supply pipe 12, and the user terminal 100 returns water to the machine body 1 through the return water pipe 13, thus forming a water circulation path between the machine body 1 and the user terminal 100. A water replenishment pipe 14 is also connected to the return water pipe 13. The proximal end of the water replenishment pipe 14 is connected to the return water pipe 13, and the distal end of the water replenishment pipe 14 is connected to an external water source, so that water can be replenished to the machine body 1 through the water replenishment pipe 14 when the return water is insufficient.

[0069] The normally closed electric valve 15 is installed on the water supply pipe 14. When the normally closed electric valve 15 is open, the water supply pipe 14 is connected to the return water pipe 13, and water is supplied to the machine body 1 through the return water pipe 13. When the normally closed electric valve 15 is closed, the connection between the water supply pipe 14 and the return water pipe 13 is cut off, and additional water cannot be supplied to the machine body 1 through an external water source. In the event of an unexpected power outage, the normally closed electric valve 15 will automatically close, thereby cutting off the connection between the external water source and the return water pipe 13, automatically cutting off the water supply, without requiring maintenance personnel to manually close the water supply valve.

[0070] like Figure 8 As shown, the gas-electric complementary heat pump also includes a water outlet pipe 16 and a normally open electric valve 17; one end of the water outlet pipe 16 is connected to the water supply pipe 12, and the other end is connected to the outside; the normally open electric valve 17 is installed on the water outlet pipe 16.

[0071] Specifically, the outlet pipe 16 is used to connect the water supply pipe 12 to the outside, so that drainage and antifreeze can be performed through the outlet pipe 16 during power outages. The normally open electric valve 17 is used to control the opening and closing of the outlet pipe 16, and when the power is off, the normally open electric valve 17 will automatically open, thereby opening the connection between the water supply pipe 12 and the outside for drainage and antifreeze, without the need for maintenance personnel to manually open it.

[0072] In summary, this application provides a gas-electric complementary heat pump, comprising a body, a water receiving tray disposed within the body, and multiple drain holes at the bottom of the water receiving tray; at least one first electric heating tape; the first electric heating tape is disposed within the water receiving tray and arranged around the multiple drain holes; and a second electric heating tape; the second electric heating tape is located within the drain holes and is in contact with the inner wall of the drain holes. In this application, the first electric heating tape is arranged around the multiple drain holes. By heating the water receiving tray through the first electric heating tape, the phenomenon of ice formation in the water receiving tray under low-temperature and cold environments is reduced, allowing the condensate in the water receiving tray to be smoothly discharged to the outside of the body. The second electric heating tape is disposed within the drain holes, directly heating the drain holes; even if ice has formed at the drain holes, the cooperation of the second and first electric heating tapes can melt and drain the ice from the water receiving tray.

[0073] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A gas-electric complementary heat pump, comprising a body, wherein a water receiving tray is disposed within the body, and a plurality of drain holes are disposed at the bottom of the water receiving tray, characterized in that, It also includes: At least one first electric heating tape; the first electric heating tape is disposed in the water receiving tray and arranged around a plurality of drain holes; The second electric heating cable is located inside the drain hole and is attached to the inner wall of the drain hole.

2. The electro-gas hybrid heat pump according to claim 1, wherein, The water receiving tray includes: Base plate; the base plate is annular; the drainage hole is located on the base plate; An inner sidewall is disposed on the inner side of the base plate and extends upward relative to the base plate; the inner sidewall is arranged in a closed loop around the base plate. An outer wall is disposed on the outer side of the base plate and extends upward relative to the base plate; the outer wall is arranged in a closed loop around the base plate; the first electric heating tape is located between the inner wall and the outer wall and is in contact with the base plate.

3. The electro-gas hybrid heat pump according to claim 2, wherein, Both the inner and outer sidewalls slope inward from top to bottom to form a funnel-shaped structure when they are enclosed by the base plate.

4. The electro-gas hybrid heat pump according to claim 2, wherein, It also includes: A partition is installed inside the machine body and located above the water receiving tray; The partition is provided with a plurality of drainage holes; the plurality of drainage holes are arranged sequentially along the perimeter of the partition and correspond to the bottom plate.

5. The electro-gas hybrid heat pump of claim 1, wherein, It also includes: The water collection pipe is connected to all the drain holes; the water collection pipe is arranged at an angle, and the upper end of the water collection pipe is lower than the drain holes.

6. The electro-gas hybrid heat pump according to claim 5, wherein, It also includes: The third electric heating tape is installed on the water collection pipe.

7. The electro-gas hybrid heat pump of claim 1, wherein, It also includes: The exhaust pipe is vertically installed at the top of the machine body; the outlet of the exhaust pipe is arranged upward and is higher than the fan at the top of the machine body.

8. The electro-gas hybrid heat pump according to claim 7, wherein, The height difference between the outlet of the exhaust pipe and the fan at the top of the machine body is greater than or equal to 500mm.

9. The electro-gas hybrid heat pump of claim 1, wherein, It also includes: A water supply pipe is connected to both the machine body and the user terminal to supply water to the user terminal through the machine body; A return water pipe is connected to both the machine body and the user terminal to return water to the machine body through the user terminal; The water supply pipe is connected at one end to the return water pipe and at the other end to an external water source. A normally closed electric valve is installed on the water supply pipe.

10. The electro-gas hybrid heat pump of claim 9, wherein, It also includes: The outlet pipe is connected at one end to the supply pipe; A normally open electric valve is installed on the water outlet pipe.

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