CN219037083U - Heat pump water heater with heat exchange of inner and outer double coils - Google Patents
Heat pump water heater with heat exchange of inner and outer double coils Download PDFInfo
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- CN219037083U CN219037083U CN202223582150.7U CN202223582150U CN219037083U CN 219037083 U CN219037083 U CN 219037083U CN 202223582150 U CN202223582150 U CN 202223582150U CN 219037083 U CN219037083 U CN 219037083U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model belongs to the technical field of water heaters, in particular to a heat pump water heater with heat exchange of an inner coil and an outer coil, wherein the outer coil is arranged on the periphery of an inner container, the inner coil is arranged on the inner side of the inner container, two ends of the outer coil are respectively connected to an electric reversing valve II and an electric reversing valve III through refrigerant pipelines, the other two ends of the electric reversing valve II are respectively connected to a tee joint and the inner coil through refrigerant pipelines, the other two ends of the electric reversing valve III are respectively connected to a filter and the tee joint through refrigerant pipelines, the other one end of the tee joint is connected to the electric reversing valve I through refrigerant pipelines, the other two ends of the electric reversing valve I are respectively connected to the inner coil and a compressor through refrigerant pipelines, and the other end of the filter is sequentially connected with a throttle expansion valve, an evaporator and the compressor. When the two coils are used simultaneously, the heating efficiency can be maximized, and the heating efficiency is higher by only using the operable coil according to different working conditions or under the condition that one coil is damaged.
Description
Technical Field
The utility model belongs to the technical field of water heaters, and particularly relates to a heat pump water heater with heat exchange of inner and outer double coils.
Background
In the existing equipment for preparing domestic hot water, although some air-source heat pump products exist, the condenser coil of the equipment is an outer coil or an inner coil at present, and the two types of equipment have different advantages and disadvantages;
the coil pipe in the existing heat pump water heater product is immersed in water and bears high pressure for a long time, particularly when the heat pump water heater is used in an environment with high water quality hardness, scaling is easy, heat exchange resistance is increased after scaling, the heat pump water heater is easy to corrode, once refrigerant leakage is caused, the whole unit cannot operate, the use safety is seriously affected, and the leakage of the inner plate heat pump water heater is difficult to repair, so that the service cycle cost of the product is increased;
the heat exchange efficiency of the outer disc heat pump water heater is lower, and the energy conservation is poorer. Mainly because outer coil pipe condenser just can exchange heat with water owing to heat needs pass coil pipe wall, heat conduction silicone grease and water tank inner bag, and the heat transfer process includes three conduction heat transfer, four surface heat transfer, greatly influences the heat exchange, and this just requires the increase outer coil pipe, increases refrigerant flow, needs the compressor to maintain and carries out work at great high low pressure operating mode, leads to COP value (i.e. the ratio of heating capacity and power consumption) relatively lower, has to be against the clear development theory of heat pump water heater high efficiency.
Disclosure of Invention
The utility model provides a heat pump water heater with heat exchange by an inner coil pipe and an outer coil pipe, which solves the technical problems in the background technology and achieves the purpose of improving the use safety performance and the heat exchange efficiency.
The heat pump water heater with heat exchange between the inner coil and the outer coil is characterized by comprising a heat pump part and an inner container part; the shell is internally provided with an inner container, the periphery of the inner container is provided with an outer coil, the inner side of the inner container is provided with an inner coil, the lower side of the inner container is provided with a cold water inlet, and the upper side of the inner container is provided with a hot water outlet;
two ends of the outer coil pipe are respectively connected to the electric reversing valve II and the electric reversing valve III through refrigerant pipelines, the other two ends of the electric reversing valve II are respectively connected to the tee joint and the inner coil pipe through refrigerant pipelines, the other two ends of the electric reversing valve III are respectively connected to the filter and the tee joint through refrigerant pipelines, the other end of the tee joint is connected to the electric reversing valve I through refrigerant pipelines, the other two ends of the electric reversing valve I are respectively connected to the inner coil pipe and the compressor through refrigerant pipelines,
the other end of the filter is sequentially connected with a throttle expansion valve, an evaporator and a compressor.
Further, a water inlet pipe connected with the cold water inlet is bent downwards to extend to the bottom of the water tank liner.
Further, the water outlet pipe connected with the hot water outlet is bent upwards and extends to the top of the water tank liner.
Further, an insulating layer is filled between the shell and the inner container of the water heater.
Further, the heat pump water heater with heat exchange of the inner and outer double coils is divided into four types, which are respectively: vertical all-in-one, vertical split machine, horizontal all-in-one and horizontal split machine.
The utility model has the beneficial effects that:
the heat pump water heater with the heat exchange of the inner coil and the outer coil is provided with the inner coil and the outer coil, when the two coils are used simultaneously, the heating efficiency can be maximized, and only the operable coil can be used according to different working conditions or under the condition that one coil is damaged, so that the use mode of the condenser is changed to change the heating quantity; the reliability of the whole water heater is better, and the heating efficiency is higher;
in particular, the compressor of the utility model can also use a variable frequency compressor. In the prior art, in cold weather, when a user prepares hot water, high frequency operation of a compressor is required, and the high frequency operation causes high pressure to be excessively high when the compressor is exhausted. In the utility model, the inner coil and the outer coil can be used simultaneously, so that the heat dissipation area of the condenser is increased, the exhaust gas is high in pressure drop and low in operation efficiency; the user can be guaranteed to produce hot water at a higher speed; when the energy-saving type solar energy storage battery is used in warm weather, low frequency is used, and energy is saved.
Drawings
FIG. 1 is a schematic view of a vertical integrated machine according to embodiment 1 of the present utility model;
FIG. 2 is a schematic diagram of embodiment 1 of the present utility model;
FIG. 3 is a schematic diagram of embodiment 2 of the present utility model;
FIG. 4 is a schematic diagram of embodiment 3 of the present utility model;
FIG. 5 is a schematic view of a vertical split machine according to the present utility model;
FIG. 6 is a schematic structural view of a horizontal all-in-one machine according to the present utility model;
FIG. 7 is a schematic view of a horizontal split machine according to the present utility model;
in the figure: a. a heat pump section; b. a liner portion; 1. a housing; 2. an inner container; 3. an evaporator; 4. a compressor; 5. an outer coil; 6. an inner coil; 7. a cold water inlet; 8. a hot water outlet; 9. an electric reversing valve II; 10. an electric reversing valve III; 11. a tee joint; 12. a filter; 13. an electric reversing valve I; 14. a throttle expansion valve; 15. and a heat preservation layer.
Detailed Description
The technical scheme of the utility model is further explained by the specific embodiments.
Example 1
Referring to the attached drawings, the heat pump water heater with heat exchange of the inner coil and the outer coil is characterized by comprising a heat pump part a and a liner part b; the inner container part b is transversely arranged to be of a horizontal structure; the liner part b is longitudinally arranged in a vertical structure; the heat pump part a and the liner part b are arranged in the same shell and are an integrated machine; the heat pump part a and the liner part b are split machines when in different shells.
In the utility model, the structure is divided into a vertical type integrated machine, see fig. 1, a vertical type split machine, see fig. 5, a horizontal type integrated machine, see fig. 6 and a horizontal type split machine, see fig. 7, and the four types are all used.
The heat pump water heater with heat exchange by the inner and outer double coils comprises a shell, wherein the shell is internally provided with an inner container 2, an evaporator 3 and a compressor 4, and a heat preservation layer 15 is filled between the shell and the inner container 2 of the water heater;
the periphery of the inner container 2 is provided with an outer coil 5, the installation mode of the outer coil 5 on the periphery of the inner container 2 is the same as that of the prior art, only the outer coil is installed in the water heater, the inner side of the inner container 2 is provided with an inner coil 6, the installation mode of the inner coil 6 on the inner side of the inner container 2 is the same as that of the prior art, only the inner coil is installed in the water heater, the lower side of the inner container 2 is provided with a cold water inlet 7, and the upper side of the inner container is provided with a hot water outlet 8; the water inlet pipe 7 is bent downwards to extend to the bottom of the water tank liner 2; the water outlet pipe 8 is bent upwards and extends to the top of the water tank liner 2.
The two ends of the outer coil pipe 5 are respectively connected to an electric reversing valve II 9 and an electric reversing valve III 10 through refrigerant pipelines, the other two ends of the electric reversing valve II 9 are respectively connected to a tee joint 11 and an inner coil pipe 6 through refrigerant pipelines, the other two ends of the electric reversing valve III 10 are respectively connected to a filter 12 and the tee joint 11 through refrigerant pipelines, the other one end of the tee joint 11 is connected to an electric reversing valve I13 through refrigerant pipelines, and the other two ends of the electric reversing valve I13 are respectively connected to the inner coil pipe 6 and a compressor 4 through refrigerant pipelines;
the other end of the filter 12 is sequentially connected with a throttle expansion valve 14, an evaporator 3 and a compressor 4.
In the technical scheme, the control system evaporator 3, the compressor 4, the electric reversing valve II 9, the electric reversing valve III 10, the electric reversing valve I13 and the throttle expansion valve 14 are all in signal connection with a controller. Five temperature sensors and two pressure sensors are arranged in the control system; the five temperature sensors are respectively a water temperature sensor, an ambient temperature sensor, an evaporator temperature sensor, a compressor suction temperature sensor and a compressor discharge temperature sensor; the two pressure sensors are respectively provided with a high pressure sensor at the exhaust pipeline of the compressor and a low pressure sensor at the suction pipeline of the compressor.
The water temperature sensor and the environment temperature sensor are arranged on the water heater in the prior art, and have the same function; the exhaust temperature sensor of the compressor is used for protecting the compressor, and when the exhaust temperature is too high, the exhaust temperature sensor plays a role in protection and transmits a signal to the controller so that the compressor stops running. The compressor suction temperature sensor cooperates with the evaporator temperature sensor to transmit a signal to cause the controller to control the opening of the throttle expansion valve 14.
The low pressure sensor feeds back signals when the temperature of the external environment is too low and exceeds a low pressure limit value, so that the unit stops running and is protected.
The high-pressure sensor can generate an excessively high pressure condition of the exhaust pipeline when the compressor frequency is too high or the compressor frequency is not high, but the external environment temperature is too high, and the exhaust pipeline is fed back to signal, so that the unit stops running and is protected when only one part of the external coil pipe or the internal coil pipe runs; when the two coils are operated simultaneously, the condition of overhigh high pressure cannot be generated, and the exhaust pressure can be reduced due to the increase of the heat dissipation area of the condenser.
In the case of operation using only the inner coil:
see fig. 2: the refrigerant pipeline from the first electric reversing valve 13 to the tee joint 11 is closed, the refrigerant pipeline from the second electric reversing valve 9 to the outer coil 5 is closed, and the refrigerant pipeline from the third electric reversing valve 10 to the outer coil is closed, namely, the AC of the first electric reversing valve 13 is communicated, the AC of the second electric reversing valve 9 is communicated, and the AC of the third electric reversing valve 10 is communicated, so that the water heater has the following working state:
the low-temperature low-pressure refrigerant in the evaporator 3 enters the compressor 4 through the suction inlet of the compressor 4, is compressed by the compressor 4, is changed into a high-temperature high-pressure refrigerant, is discharged from the exhaust outlet of the compressor 4 and enters the inner coil 6 through the first electric reversing valve 13, the heat of the refrigerant releases water in the water supply tank, meanwhile, the refrigerant is changed into liquid with supercooling degree under the pressure from high-temperature high-pressure gas, the supercooled liquid refrigerant leaves the inner coil 6 and passes through the second electric reversing valve 9, the tee joint 11, the third electric reversing valve 10, the filter 12 and the throttling expansion valve 14 to be suddenly reduced in pressure, the liquid refrigerant is saturated rapidly, flash evaporation occurs immediately, the temperature is rapidly reduced, the liquid refrigerant flows into the evaporator in a gas-liquid two-phase state, and is fully evaporated with the aid of an axial flow fan of the evaporator 3, a large amount of environmental heat is absorbed, the state of the refrigerant is changed into a gas state with superheat degree under the low pressure, and one-time circulation is completed.
Example 2
Referring to fig. 3, based on the embodiment 1 structure, in the case of operation using only the outer coil pipe:
the refrigerant pipeline from the first electric reversing valve 13 to the inner coil 6 is closed, the refrigerant pipeline from the second electric reversing valve 9 to the inner coil 6 is closed, the refrigerant pipeline from the third electric reversing valve 10 to the three-way valve 11 is closed, namely BC communication of the first electric reversing valve 13, BC communication of the second electric reversing valve 9 and BC communication of the third electric reversing valve 10 is realized, and under the condition that the water heater is in a working state:
the refrigerant with low temperature and low pressure in the evaporator 3 enters the compressor 4 from the suction inlet of the compressor, is compressed by the compressor 4, is changed into the refrigerant with high temperature and high pressure, is discharged from the exhaust outlet of the compressor, passes through the electric reversing valve I13, the tee joint 11 and the electric reversing valve II 9, and then enters the outer coil 5, the heat of the refrigerant is released by the outer coil 5, meanwhile, the refrigerant is changed into liquid with supercooling degree under the pressure from high temperature and high pressure gas, the supercooled liquid refrigerant passes through the electric reversing valve III 10, the filter 12 and the throttle expansion valve 14 after leaving the outer coil 5, the pressure suddenly drops, the liquid refrigerant is saturated rapidly, flash evaporation occurs immediately, the temperature drops rapidly, the refrigerant flows into the evaporator 3 in a gas-liquid two-phase state, is fully evaporated under the assistance of an axial flow fan of the evaporator 3, a large amount of environmental heat is absorbed, the refrigerant state is changed into a gas state with superheat degree under the low pressure, and one-time circulation is completed.
Example 3
Referring to fig. 4, on the basis of the structure of embodiment 1, under the condition that the inner coil 6 and the outer coil 5 are used to work simultaneously, the refrigerant pipeline from the first electric reversing valve 13 to the tee joint 11 is closed, the refrigerant pipeline from the second electric reversing valve 9 to the tee joint 11 is closed, the refrigerant pipeline from the third electric reversing valve 10 to the tee joint 11 is closed, namely, the AC of the first electric reversing valve 13 is communicated, the AB of the second electric reversing valve 9 is communicated, and the BC of the third electric reversing valve 10 is communicated, wherein the water heater has the following working states:
the low-temperature low-pressure refrigerant in the evaporator 3 enters the compressor 4 through the compressor suction inlet, is compressed through the compressor 4, is changed into high-temperature high-pressure refrigerant, is discharged through the compressor exhaust outlet and enters the inner coil 6 through the refrigerant pipeline and the electric reversing valve I13, the heat exchanger releases the heat of the refrigerant into water in the water supply tank, the refrigerant leaves the inner coil 6 and enters the outer coil 5 through the electric reversing valve II 9 to be changed into liquid with supercooling degree under the pressure, the liquid refrigerant is quickly saturated after passing through the electric reversing valve III 10, the filter 12 and the throttling expansion valve 14, flash evaporation occurs immediately, the temperature is quickly reduced, the liquid refrigerant flows into the evaporator 3 in a gas-liquid two-phase state, and is fully evaporated with the aid of an axial flow fan of the evaporator 3, a large amount of environmental heat is absorbed, the refrigerant state is changed into a gas state with superheat degree under the low pressure, and one-time circulation is completed.
Claims (5)
1. The heat pump water heater with heat exchange between the inner coil and the outer coil is characterized by comprising a heat pump part and an inner container part; an inner container is arranged in the shell, an outer coil pipe is arranged at the periphery of the inner container, an inner coil pipe is arranged at the inner side of the inner container, a cold water inlet is arranged at the lower side of the inner container, a hot water outlet is arranged at the upper side of the inner container,
two ends of the outer coil pipe are respectively connected to the electric reversing valve II and the electric reversing valve III through refrigerant pipelines, the other two ends of the electric reversing valve II are respectively connected to the tee joint and the inner coil pipe through refrigerant pipelines, the other two ends of the electric reversing valve III are respectively connected to the filter and the tee joint through refrigerant pipelines, the other end of the tee joint is connected to the electric reversing valve I through refrigerant pipelines, the other two ends of the electric reversing valve I are respectively connected to the inner coil pipe and the compressor through refrigerant pipelines,
the other end of the filter is sequentially connected with a throttle expansion valve, an evaporator and a compressor.
2. The heat pump water heater with heat exchange by inner and outer double coils according to claim 1, wherein the water inlet pipe connected with the cold water inlet is bent downwards to extend to the bottom of the water tank liner.
3. The heat pump water heater with heat exchange by inner and outer double coils according to claim 1, wherein the water outlet pipe connected with the hot water outlet is bent upwards and extends to the top of the water tank liner.
4. The heat pump water heater with heat exchange by inner and outer double coils according to claim 1, wherein an insulation layer is filled between the shell and the water heater liner.
5. The heat pump water heater with heat exchange by inner and outer double coils according to claim 1, wherein the heat pump water heater with heat exchange by inner and outer double coils is divided into four types, which are respectively: vertical all-in-one, vertical split machine, horizontal all-in-one and horizontal split machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223582150.7U CN219037083U (en) | 2022-12-31 | 2022-12-31 | Heat pump water heater with heat exchange of inner and outer double coils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223582150.7U CN219037083U (en) | 2022-12-31 | 2022-12-31 | Heat pump water heater with heat exchange of inner and outer double coils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219037083U true CN219037083U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223582150.7U Active CN219037083U (en) | 2022-12-31 | 2022-12-31 | Heat pump water heater with heat exchange of inner and outer double coils |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219037083U (en) |
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2022
- 2022-12-31 CN CN202223582150.7U patent/CN219037083U/en active Active
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