CN212902093U - Heat pump set - Google Patents
Heat pump set Download PDFInfo
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- CN212902093U CN212902093U CN202021712655.9U CN202021712655U CN212902093U CN 212902093 U CN212902093 U CN 212902093U CN 202021712655 U CN202021712655 U CN 202021712655U CN 212902093 U CN212902093 U CN 212902093U
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Abstract
The utility model provides a heat pump set improves the radiating effect to its electric cabinet, guarantees that automatically controlled components and parts work at the temperature range of allowwing, improves unit operational reliability, extension unit operating range. The heat pump unit comprises a shell, a water pan, a heat exchanger, a fan, an electric cabinet and a drainage air channel, wherein the water pan divides the interior of the shell into an upper installation cavity and a lower installation cavity; the induced draft wind channel is communicated with the electric cabinet and the upper installation cavity. The inner space of the electric cabinet is communicated with the inner space of the upper mounting cavity by arranging the induced air duct, so that air in the electric cabinet flows through the induced air duct when the fan works, heat is transmitted to the upper mounting cavity from the induced air duct and is discharged from the air outlet, heat dissipation of the electric control components is realized, the electric control components are guaranteed to work within an allowable temperature range, the reliability of a unit is increased, and the operation range of the whole machine is expanded.
Description
Technical Field
The utility model belongs to the technical field of the heat pump.
Background
The heat pump absorbs heat from a low temperature heat source (e.g., ambient natural air, ground water, river water, sea water, sewage, etc.), and converts the heat to a higher temperature heat source to be released into a desired space (or other area). The device can be used as both heating and cooling equipment, so that the purpose of one machine for two purposes is achieved.
The energy conversion of the heat pump unit is to absorb lower temperature heat energy from the environment heat source (such as water and air) under the combined action of the compressor and the refrigerant circulating in the heat exchange system by consuming certain auxiliary energy (such as electric energy) under the action of the compressor, and then to convert the heat energy into higher temperature heat energy to be released to the circulating medium (such as water and air) to become a high temperature heat source for output.
For heat pump units with upper and lower layer structures, such as air source heat pump units, air-cooled cold water heat pump units, etc., the upper layer is usually a fan and a heat exchanger, the middle is a water pan, and the lower layer is a compressor, a pipeline, a valve, etc., system components and an electric cabinet. In order to guarantee the service life of the components inside the electric cabinet, the electric cabinet needs to be cooled so as to guarantee that the temperature rise of the components inside the electric cabinet does not exceed the allowable upper limit.
For the problem of heat dissipation of the electric control box of the unit, the following schemes are generally adopted in the prior art:
1. the electric cabinet cooling device has the advantages that a water pan is omitted, the upper heat exchanger is changed from a U shape to a V shape, wind around the electric cabinet can be directly sucked away by an upper fan, and accordingly the purpose of cooling the electric cabinet is achieved, the electric cabinet cooling device is not attractive in appearance compared with the U shape, condensed water and rainwater can easily flow onto lower parts directly after the water pan is omitted, and the risk of failure of the parts exists;
2. the running environment temperature of the unit is reduced, for example, the environment temperature is reduced to 43 ℃ from the highest 48 ℃, so that the running range of the whole unit is reduced, and once the actual use temperature of a user exceeds 43 ℃ (for example, the local temperature easily exceeds 43 ℃ due to intense sunlight on the roof in summer), the unit has no reliable cooling measures, the service life of components of an electric cabinet is influenced, and the failure rate of the whole unit is increased;
3. the electric cabinet is cooled by adding a small cooling fan on the side surface of the electric cabinet, so that the temperature requirement can be met, but the service life of the cooling fan is also prolonged, the operating life of the cooling fan is shortened along with the increase of the ambient temperature due to the characteristics of the fan, and risks such as dirty blockage and salt spray corrosion of the cooling fan are also caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a heat pump set improves the radiating effect to its electric cabinet, guarantees that automatically controlled components and parts work at the temperature range of allowwing, improves unit operational reliability, extension unit operating range.
In some embodiments herein, a heat pump unit is provided, comprising:
the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell;
the water receiving tray is arranged in the shell and divides the interior of the shell into an upper mounting cavity and a lower mounting cavity, and the air inlet and the air outlet are communicated with the upper mounting cavity;
a heat exchanger mounted in the upper mounting cavity;
the fan is arranged at the air outlet and at least used for driving outside airflow to enter the upper installation cavity from the air inlet, flow through the heat exchanger and then be discharged from the air outlet;
the electric control box is arranged in the lower installation cavity;
the heat pump unit further comprises an induced air duct, an opening at the lower end of the induced air duct is communicated with the inner space of the electric cabinet, and an opening at the upper end of the induced air duct penetrates through the water pan and is communicated with the upper mounting cavity. The inner space of the electric cabinet is communicated with the inner space of the upper installation cavity by arranging the induced air duct, so that when the fan works, on one hand, external air flow enters the upper installation cavity from the air inlet and is discharged from the air outlet after flowing through the heat exchanger for heat exchange, so that heat exchange is realized, on the other hand, the air in the electric cabinet flows through the induced air duct, heat is transferred to the upper installation cavity from the induced air duct and is discharged from the air outlet, so that heat dissipation of electric control components is realized, the electric control components are ensured to work within an allowable temperature range, and the reliability of a unit is improved; the electric cabinet heat dissipation is good, and then heat pump set can move under higher ambient temperature, has expanded the operating range of complete machine.
In some embodiments of the present application, an air volume adjusting component is disposed in the induced air duct and is used for changing the volume of air flowing through the induced air duct.
In some embodiments of the present application, the air volume adjusting component is an electric air valve, and a temperature sensor is disposed in the electric cabinet and is used for detecting a temperature in the electric cabinet in real time to control an opening degree of the electric air valve.
In some embodiments of the present application, the air volume adjusting component may also be a manual air valve to manually adjust the air volume flowing through the induced air duct.
In some embodiments in this application, the air intake is located on the side of casing, the air outlet is located on the top surface of casing, the fan is installed in the air outlet, the induced air wind channel is vertical wind channel, and its upper end opening is just right the fan.
In some embodiments of the present application, a lower end opening of the induced air duct extends into an internal space of the electric cabinet, and a circumferential side surface of the induced air duct is fixedly connected to a top surface of the electric cabinet.
In some embodiments in this application, the upper end opening upper cover in induced air wind channel is equipped with waterproof part, waterproof part with have between the upper end opening in induced air wind channel and make the upper end opening in induced air wind channel with the upper portion installation cavity keeps the space of intercommunication, on the basis of guaranteeing induced air wind channel and upper portion installation cavity to keep the intercommunication, waterproof part can prevent effectively that comdenstion water and sleet from getting into induced air wind channel with the electric cabinet.
In some embodiments in this application, the waterproof part includes the roof and is located the circumference curb plate of roof below, the roof is located the upper end opening in induced air wind channel the top and with the upper end opening interval certain distance in induced air wind channel, circumference curb plate with be equipped with ventilative dustproof part between the circumference lateral wall in induced air wind channel.
In some embodiments of the present application, the dust-proof component is a metal dust-proof net, and the metal dust-proof net is welded to the circumferential side plate and the circumferential side wall of the induced air duct.
In some embodiments of the present application, the heat exchanger is circumferentially arranged around the upper mounting cavity to improve heat exchange efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of a heat pump unit according to an embodiment;
FIG. 2 is a schematic view of an arrangement structure of an induced air duct of a heat pump unit according to an embodiment.
Description of the drawings: 10-shell, 11-air outlet, 12-upper installation cavity, 13-lower installation cavity, 14-lower shell, 20-water pan, 30-heat exchanger, 40-fan, 50-electric cabinet, 60-induced air duct, 61-lower end opening, 62-upper end opening, 70-air quantity regulating component, 80-temperature sensor, 90-waterproof component, 91-top plate, 92-circumferential side plate and 100-dustproof component.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "upper," "lower," "front," "back," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The energy conversion of the heat pump unit is to absorb lower temperature heat energy from the environment heat source (such as water and air) under the combined action of the compressor and the refrigerant circulating in the heat exchange system by consuming certain auxiliary energy (such as electric energy) under the action of the compressor, and then to convert the heat energy into higher temperature heat energy to be released to the circulating medium (such as water and air) to become a high temperature heat source for output.
For heat pump units with upper and lower layer structures, such as air source heat pump units, air-cooled cold water heat pump units, etc., the upper layer is usually a fan and a heat exchanger, the middle is a water pan, and the lower layer is a compressor, a pipeline, a valve, etc., system components and an electric cabinet. In order to guarantee the service life of the components inside the electric cabinet, the electric cabinet needs to be cooled so as to guarantee that the temperature rise of the components inside the electric cabinet does not exceed the allowable upper limit.
Referring to fig. 1 and 2, an exemplary heat pump unit is illustrated, which includes a housing 10, a water pan 20, a heat exchanger 30 (specifically, a use-side heat exchanger), a fan 40, an electric cabinet 50, and essential structural components of the heat pump unit, such as a compressor and a throttling device, where an air inlet (not shown) and an air outlet 11 are formed on the housing 10; the water pan 20 is installed in the casing 10 and divides the internal space of the casing 10 into an upper installation cavity 12 and a lower installation cavity 13, and the air inlet and the air outlet 11 are both communicated with the upper installation cavity 12; the heat exchanger 30 is installed in the upper installation cavity 12; the fan 40 is installed at the air outlet 11 and at least used for driving outside air flow to enter the upper installation cavity 12 from the air inlet, and the outside air flow is discharged from the air outlet 11 after flowing through the heat exchanger 30 for heat exchange; the electric control box 50 is arranged in the lower mounting cavity 13, and various electric control components needing heat dissipation are arranged in the electric control box; the heat pump unit in this embodiment further includes an induced air duct 60, a lower end opening 61 of which is communicated with the internal space of the electric cabinet 50, and an upper end opening 62 of which passes through the water pan 20 and is communicated with the upper installation cavity 12, so that the internal space of the electric cabinet 50 is communicated with the upper installation cavity 12 through the induced air duct 60.
By arranging the induced air duct 60, when the fan works, external air flow enters the upper mounting cavity 12 from the air inlet, flows through the heat exchanger 30 for heat exchange and is discharged from the air outlet 11 for heat exchange, the fan can drive air in the electric cabinet 50 to flow, heat in the electric cabinet 50 is transferred to the upper mounting cavity 12 from the induced air duct 60, and the induced air duct 60 discharges hot air flow in the electric cabinet 50 from the air outlet 11 in a flow guiding direction shown by an arrow in fig. 2, so that heat dissipation of electric control components is realized, the electric control components are ensured to work in an allowable temperature range, and the reliability of the unit is improved; the electric cabinet 50 is enabled to radiate well by arranging the induced air duct 60, so that the heat pump unit can operate at higher ambient temperature, the operation range of the whole machine is expanded, and the temperature inside the electric cabinet 50 can be ensured not to be too high even under some severe operation working conditions (such as the ambient temperature is up to about 48 ℃), so that the temperature rise of components inside the electric cabinet is not more than the allowable upper limit, and the operation life of the components is ensured.
Because the air introduced into the upper installation cavity 12 by the induced air duct 60 does not undergo heat exchange by the heat exchanger 30, and the air after heat exchange are both discharged from the air outlet 11, the heat exchange efficiency of the heat exchanger 30 is reduced compared with the situation that the induced air duct 60 is not provided and the air sucked by the fan 40 completely flows through the heat exchanger 30. In order to make up for the defect, the switch of the induced air duct 60 in the embodiment is controllable, for example, when the ambient temperature is low, that is, the ambient temperature of the electric control box 50 is low, and the temperature of the electric control component is within the allowable temperature range, the induced air duct 60 can be closed, so that the efficiency loss of the unit is avoided; if the air volume flowing through the induced air duct 60 is adjusted according to different environment temperatures and the temperature of the electric cabinet 50, the air volume flowing from the electric cabinet 50 is minimum on the premise of meeting the cooling requirement of the electric cabinet 50, and the influence on the heat exchange efficiency of the whole machine is reduced. In order to achieve the above technical effects, in the present embodiment, an air volume adjusting component 70 is disposed in the induced air duct 60 for changing the air volume flowing through the induced air duct 60.
In some embodiments of the present application, the air volume adjusting part 70 is an electric air valve, and a temperature sensor 80 is disposed in the electric cabinet 50 and is used for detecting the temperature in the electric cabinet 50 in real time to control the opening of the electric air valve, so as to ensure the energy efficiency of the whole machine. Of course, the air volume adjusting member 70 may be a manual air valve to manually adjust the air volume flowing through the induced air duct 60. The electric air valve and the manual air valve can adopt the prior art, and the details are not repeated.
In this embodiment, the casing 10 is divided by the water receiving tray 20 into an upper casing enclosing an upper mounting cavity 12 and a lower casing 14 enclosing a lower mounting cavity 13, in this embodiment, the upper casing is a grid-shaped casing to form a circumferential air inlet, that is, the air inlet is located on a side surface of the casing 10, the air outlet 12 is located on a top surface of the casing 10, the fan 40 is installed in the air outlet 12, the induced air duct 60 is a vertical air duct, an upper end opening of the induced air duct is directly opposite to the fan 40, so that induced air is smooth, and a heat dissipation effect on the electric cabinet 50 is further improved. The lower housing 14 encloses the lower mounting cavity 13 to protect system components such as compressors, pipelines and valves in the lower mounting cavity 13 and the electric cabinet 500, and ensure the use safety. Meanwhile, in order to improve the heat exchange effect, the heat exchanger 30 surrounds a circle along the circumferential direction of the upper installation cavity 12, as shown in fig. 1, the heat exchanger 30 is formed by combining two U-shaped heat exchangers, so that the circumferential air inlet can be effectively exchanged, and the heat exchange effect is improved.
The induced air duct 60 may be fixed in the housing 10 by a connection structure such as a bracket structure, or may be fixedly provided in the housing 10 in another structure. In this embodiment, the induced air duct 60 is made of a rigid material, the lower end opening 61 of the induced air duct extends into the internal space of the electric cabinet 50, the circumferential side surface of the induced air duct 60 is fixedly connected with the top surface of the electric cabinet 50, for example, welded or screwed, and the upper end opening 62 of the induced air duct extends upward through the water pan 20 and is communicated with the upper installation cavity 12. If the induced air duct 60 is made of a deformable soft material, two ends of the induced air duct can be respectively and fixedly connected with the electric cabinet 50 and the water pan 20 through flange structures.
Because the upper end opening 62 of the induced air duct 60 is communicated with the upper installation cavity 12, in order to prevent condensed water, rain, snow and the like from entering the induced air duct 60 and the electric cabinet 50, in this embodiment, the waterproof component 90 is covered on the upper end opening 12 of the induced air duct 60, and a gap for keeping the upper end opening of the induced air duct 60 communicated with the upper installation cavity 12 is formed between the waterproof component 90 and the upper end opening of the induced air duct 60, so that on the basis of ensuring that the induced air duct 60 is communicated with the upper installation cavity 12, the waterproof component 90 effectively blocks the condensed water, rain, snow and the like, and the use safety of electric control components in the electric cabinet 50 is ensured.
Specifically, in some embodiments of the present application, as shown in fig. 2, the waterproof member 90 includes a top plate 910 and a circumferential side plate 92 located below the top plate 91, the top plate 91 is located above the upper end opening 62 of the induced air duct 60 and is spaced from the upper end opening of the induced air duct 60 by a certain distance to form the above-mentioned gap for keeping the upper end opening of the induced air duct 60 in communication with the upper installation cavity 12, and a ventilation dustproof member 100 is provided between the circumferential side plate 92 and the circumferential side wall of the induced air duct 60 to prevent impurities and debris from entering the electric cabinet.
Specifically, the dust-proof component 100 may be a metal dust-proof net, which is welded to the circumferential side plate 92 of the waterproof component 90 and the circumferential side wall of the induced air duct 600, or a frame is connected between the circumferential side plate 92 of the waterproof component 90 and the circumferential side wall of the induced air duct 600, and a fabric dust-proof net is disposed on the frame.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. A heat pump unit comprising:
the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell;
the water receiving tray is arranged in the shell and divides the interior of the shell into an upper mounting cavity and a lower mounting cavity, and the air inlet and the air outlet are communicated with the upper mounting cavity;
a heat exchanger mounted in the upper mounting cavity;
the fan is arranged at the air outlet and at least used for driving outside airflow to enter the upper installation cavity from the air inlet, flow through the heat exchanger and then be discharged from the air outlet;
the electric control box is arranged in the lower installation cavity;
the heat pump unit is characterized by further comprising an induced air duct, wherein the lower end opening of the induced air duct is communicated with the inner space of the electric cabinet, and the upper end opening of the induced air duct penetrates through the water receiving tray to be communicated with the upper mounting cavity.
2. The heat pump unit of claim 1,
and an air quantity adjusting part is arranged in the induced air duct and is used for changing the air quantity flowing through the induced air duct.
3. The heat pump unit of claim 2,
the air quantity adjusting part is an electric air valve, and a temperature sensor is arranged in the electric cabinet.
4. The heat pump unit of claim 2,
the air quantity adjusting part is a manual air valve.
5. The heat pump unit of claim 1,
the air inlet is located on the side face of the shell, the air outlet is located on the top face of the shell, the fan is installed in the air outlet, the induced air duct is a vertical air duct, and the opening of the upper end of the induced air duct is right opposite to the fan.
6. A heat pump unit according to claim 5,
the lower end opening of the induced air duct extends into the internal space of the electric cabinet, and the circumferential side face of the induced air duct is fixedly connected with the top face of the electric cabinet.
7. The heat pump unit of claim 1,
and a waterproof part is covered on the upper end opening of the induced air duct, and a gap for communicating the upper end opening of the induced air duct with the upper mounting cavity is formed between the waterproof part and the upper end opening of the induced air duct.
8. A heat pump unit according to claim 7,
the waterproof part comprises a top plate and a circumferential side plate located below the top plate, the top plate is located above an upper end opening of the induced air duct and is spaced from the upper end opening of the induced air duct by a certain distance, and a breathable dustproof part is arranged between the circumferential side plate and a circumferential side wall of the induced air duct.
9. A heat pump unit according to claim 8,
the dustproof part is a metal dustproof net and is connected with the circumferential side plate and the circumferential side wall of the induced air duct in a welding mode.
10. The heat pump unit of claim 1,
the heat exchanger surrounds a circle along the circumferential direction of the upper installation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021712655.9U CN212902093U (en) | 2020-08-17 | 2020-08-17 | Heat pump set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021712655.9U CN212902093U (en) | 2020-08-17 | 2020-08-17 | Heat pump set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212902093U true CN212902093U (en) | 2021-04-06 |
Family
ID=75242537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021712655.9U Active CN212902093U (en) | 2020-08-17 | 2020-08-17 | Heat pump set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212902093U (en) |
-
2020
- 2020-08-17 CN CN202021712655.9U patent/CN212902093U/en active Active
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