CN219346786U

CN219346786U - Hot water unit for inhibiting frosting

Info

Publication number: CN219346786U
Application number: CN202223604463.8U
Authority: CN
Inventors: 淳郊林; 张凯君; 吕锋; 刘帮; 袁晓军
Original assignee: Zhejiang Zhongguang Electric Appliance Group Co Ltd
Current assignee: Zhejiang Zhongguang Electric Appliance Group Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-14
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a hot water unit for inhibiting frosting, which comprises a machine shell, wherein a working cavity and a heat exchange cavity are arranged in the machine shell, a compressor, a flash tank and an electric control element for controlling the operation of the unit are all arranged in the working cavity, an evaporator is arranged in the heat exchange cavity, the rear wall of the evaporator can be directly contacted with the external environment, an air duct is also arranged in the machine shell, an air inlet of the air duct is communicated with the working cavity, an air outlet of the air duct is communicated with the heat exchange cavity, and the air duct can extract heat generated by the compressor, the flash tank and the electric control element of the working cavity during operation and can send the heat to the surface of the evaporator for inhibiting the frosting of the evaporator, so that the heat absorption efficiency of the evaporator is improved or the evaporator can be directly sent to the external environment to avoid overheat of the evaporator.

Description

Hot water unit for inhibiting frosting

Technical Field

The utility model relates to the field of water heaters, in particular to a water heater unit for inhibiting frosting.

Background

The unit is below 12 ℃ of the outer ring, the evaporator can be frosted gradually, the heat exchange effect of the heat pump water heater can be affected during and after frosting, when a certain time and a certain temperature are reached, the system is used for achieving the defrosting purpose through a four-way valve cutting valve, the temperature of the evaporator is increased, the normal defrosting time is generally about 3-5 minutes, refrigeration water can be generated in the process, the energy efficiency of the unit can be reduced, and the time consumption of hot water generation is increased.

The patent document with the publication number of CN210861862U discloses a high-efficiency chassis icing-resistant fin heat exchanger, which comprises fins, a fin temperature-sensitive tube, a variable resistance heating belt, an antifreezing working medium tube and a cold and hot migration heat tube, wherein one end of the bottom of the fin exchanger is provided with the fin temperature-sensitive tube, and a temperature-sensitive probe is arranged in the fin temperature-sensitive tube. The inside of fin coils has the working medium pipe that prevents frostbite, the one end of the working medium main pipe that prevents frostbite of fin side is working medium pipe import, and the other end is working medium pipe export that prevents frostbite. And a variable resistance heating belt is arranged on one side of the bottom of the fin, and a cold-hot migration heat pipe is arranged on the other side of the bottom of the fin. When the ambient temperature is more than 4 ℃ and less than or equal to 8 ℃, the fin heat exchanger realizes an antifreezing function through working media in the antifreezing working media pipe; when the ambient temperature is continuously reduced to minus 2 ℃ which is less than or equal to T0 and the humidity is increased, the evaporation temperature of the fin heat exchanger is gradually reduced, the heat generating capacity of the fin heat exchanger is reduced, the heat demand of a user side is not reduced and increased, the high humidity enables the fin surface of the fin heat exchanger to be frosted, the evaporation heat absorption end of the cold-hot migration heat pipe absorbs the heat in the air, the evaporated refrigerant working medium is transferred to the fin heat exchanger after being upwards migrated to the condensation heat dissipation end, and the frosting phenomenon is effectively inhibited while the capacity transfer is realized.

In the prior art, the heating source or the antifreezing medium is covered on the evaporator to achieve the effect of preventing frosting, but the method not only can increase the cost and control difficulty of the unit, but also can reduce the heat exchange efficiency of the unit and increase the energy consumption of the unit.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model aims to provide a hot water unit capable of inhibiting frosting, which can extract heat generated by a compressor, a flash tank and an electric control element during operation, and can also send the heat to the surface of an evaporator for inhibiting frosting of the evaporator to improve the heat absorption efficiency of the evaporator or directly send the heat to the external environment, so that frosting can be inhibited, and unit components can be prevented from being stopped at a high temperature, and the operation of the unit is more stable.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a restrain hot water unit of frosting, includes casing, compressor, heat exchanger, flash tank, evaporimeter and water tank, compressor, heat exchanger, flash tank and evaporimeter pass through the main line and connect into endless return circuit, be provided with working chamber and heat transfer chamber in the casing, compressor, flash tank and the automatically controlled component that is used for controlling the unit operation are all installed in the working chamber, and the evaporimeter is installed in the heat transfer chamber and the evaporimeter back wall can direct contact with external environment, the heat exchanger sets up in the water tank, still be provided with the wind channel in the casing, the air intake and the working chamber UNICOM of wind channel, the air outlet and the heat transfer chamber UNICOM of wind channel, install the axial fan subassembly that is used for extracting the air in the working chamber in the wind channel, the exit in wind channel is installed and can be opened or confined aviation baffle, thereby the motor that links to each other with the rotation angle control aviation baffle is still installed on the casing, thereby the air in the control wind channel blows to the back wall of evaporimeter.

Preferably, a first partition plate is arranged in the shell, and the first partition plate divides the interior of the shell into a working cavity and a heat exchange cavity.

Preferably, the working cavity is internally and fixedly provided with a second baffle, part of the first baffle, the second baffle and part of the inner wall of the working cavity enclose the air channel, an air outlet of the air channel is formed in the first baffle, and an air inlet of the air channel is formed in the second baffle.

Preferably, the air outlet is located at the rear side of the evaporator.

Preferably, an auxiliary heating pipeline for heating air in the air duct is arranged in the air duct.

Preferably, the inlet of the auxiliary heating line is mounted on the line between the heat exchanger and the flash tank, and the outlet of the auxiliary heating line is mounted on the line between the flash tank and the evaporator.

Preferably, the outlet of the auxiliary heating line is connected to a flash tank.

Preferably, an auxiliary electronic expansion valve is arranged on the auxiliary heat pipe.

Preferably, the auxiliary circuit electronic expansion valve is arranged at the inlet of the auxiliary heating pipeline.

Preferably, a one-way valve is arranged at the outlet of the auxiliary heating pipeline.

The technical scheme of the utility model has the beneficial effects that: the unit can concentrate heat emitted by electric elements, a compressor, a flash evaporator, part of main pipelines and all parts arranged in the working cavity in the air duct, and then air with heat is uniformly blown onto the rear wall of the evaporator through the axial flow fan, so that the temperature of the environment where the evaporator is positioned can be increased, the frosting of the evaporator is inhibited, and water condensed on the surface of the evaporator can be taken away through the air flowing through the outer surface of the evaporator; the air deflector used for controlling the air flow direction is controlled by the motor, so that the motor can control the air deflector to seal the air duct and prevent external dust, insects and the like from entering the working cavity, and the motor can also control the rotating angle of the air deflector to enable air in the air duct to be directly discharged out of the shell or part of air to be blown to the rear wall of the evaporator, so that the heat blown to the evaporator can be flexibly controlled according to the environment where the unit is located, the unit can be restrained from frosting, the components in the working cavity can be cooled, and the smooth operation of the unit is ensured.

Drawings

FIG. 1 is a schematic diagram of a hot water unit according to the present utility model;

FIG. 2 is a schematic diagram of a hot water unit according to the present utility model;

FIG. 3 is a schematic diagram of a first air duct;

FIG. 4 is a second schematic structural view of the air duct;

fig. 5 is a schematic diagram III of the air duct.

Reference numerals: 1. a compressor; 11. a working chamber; 12. a heat exchange cavity; 14. A bottom plate; 15. a rear side plate; 16. a first separator; 17. a grid part; 2. a four-way valve; 3. a heat exchanger; 4. a flash tank; 5. an evaporator; 6. a water tank; 7. an auxiliary heating pipeline; 71. an electronic expansion valve; 72. a one-way valve; 73. a temperature sensing bag; 81. An air duct; 811. an air inlet; 812. an air outlet; 82. an axial flow fan assembly; 83. a motor; 84. an air deflector; 86. a second separator; 88. a first mounting plate; 89. a second mounting plate; 9. and a main pipeline.

Description of the embodiments

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Examples

The hot water unit capable of inhibiting frosting comprises a shell, a compressor 1, an evaporator 5, a flash tank, a heat exchanger 3 and a water tank 6, wherein the compressor 1, the heat exchanger 3, the flash tank 4 and the evaporator 5 are connected into a circulating loop through a main pipeline 9, a working cavity 11 and a heat exchange cavity 12 are arranged in the shell, the compressor 1, the flash tank 4 and an electric control element for controlling the operation of the unit are all arranged in the working cavity 11, the evaporator 5 is arranged in the heat exchange cavity 12, part of the rear wall of the evaporator 5 can be directly contacted with the external environment, the heat exchanger 3 is arranged in the water tank 6, an air channel 81 is further arranged in the shell, an inlet 811 of the air channel 81 is communicated with the working cavity 11, an outlet 812 of the air channel 81 is communicated with the external environment, an axial flow fan assembly 82 for extracting air in the working cavity is arranged in the air channel 81, an air deflector 84 capable of opening or closing the air channel 81 is arranged at the outlet 812 of the air channel 81, the air deflector 84 is rotationally connected with the shell, a motor 84 is further arranged on the shell, and the motor is connected with the motor 83 so that the air deflector 83 can be controlled to be discharged to the external environment in the air channel 84. Furthermore, the main pipeline is also provided with a four-way valve 2, and the compressor is connected with the heat exchanger or the evaporator through the four-way valve.

The device is arranged in a low-temperature environment, heat emitted by electric elements, a compressor, a flash evaporator, part of main pipelines and all parts arranged in a working cavity can be concentrated in an air duct, and then air with heat is uniformly blown onto the rear wall of the evaporator through an axial flow fan, so that the temperature of the environment where the evaporator is positioned can be increased, frosting of the evaporator is inhibited, and water condensed on the surface of the evaporator can be taken away through the air flowing through the outer surface of the evaporator; the air deflector used for controlling the air flow direction is controlled by the motor, so that the motor can control the air deflector to seal the air duct and prevent external dust, insects and the like from entering the working cavity, and the motor can also control the rotating angle of the air deflector to enable air in the air duct to be directly discharged out of the shell or part of air to be blown to the rear wall of the evaporator, so that the heat blown to the evaporator can be flexibly controlled according to the environment where the unit is located, the unit can be restrained from frosting, the components in the working cavity can be cooled, and the smooth operation of the unit is ensured.

In this embodiment, the casing includes a bottom plate 14, a top plate, a front side plate, a rear side plate 15, a left side plate and a right side plate, where the front side plate, the left side plate, the rear side plate 15 and the right side plate enclose a hollow structure, and the top plate and the bottom plate 14 seal the upper and lower ends of the hollow structure; the first partition plate 16 is fixedly installed in the casing, the first partition plate 16 is respectively connected with the top plate, the bottom plate 14, the rear side plate 15 and the front side plate, so that the inner space of the casing is divided into the working cavity 11 and the heat exchange cavity 12, a through-flow fan is arranged on the front side plate, the evaporator 5 is of an L-shaped structure, the right side plate is of a grid structure, the rear side plate 15 of the part positioned on the rear side of the evaporator 5 is of a grid-shaped grid part 17 structure, the rear side wall of the evaporator 5 can be directly contacted with the external environment, the evaporator 5 exchanges heat with the external environment, and therefore the position where frosting is most likely to occur is the rear wall of the evaporator 5.

In this embodiment, a second partition 86 is fixed in the casing, the second partition 86 is located in the working chamber 11, and the second partition 86 is respectively connected with the top plate, the bottom plate 14, the first partition 16 and the rear side plate 15, so that a part of the top plate, a part of the bottom plate 14, a part of the first partition 16, a part of the rear side plate 15 and the second partition 86 enclose an air duct 81, an air inlet 811 of the air duct 81 is a second opening formed in the second partition 86 and communicated with the working chamber 11 and the air duct 81, an air outlet 8112 of the air duct 81 is a first opening formed in the first partition 16 and communicated with the air duct 81 and the heat exchange chamber 12, the first opening is located between the evaporator 5 and the rear side plate 15, and the first opening can also be located between the rear side plate 15 and the evaporator 5 due to the grid-like structure of the part of the rear side plate 15 located behind the evaporator 5. In this way, the structure of the unit can be made more compact. Further, a first mounting plate 88 and a second mounting plate 89 are fixed in the air duct 81, the first mounting plate 88 is located above the second mounting plate 89, the upper end and the lower end of the air deflector 84 are respectively hinged to the first mounting plate 88 and the second mounting plate 89, the motor 83 is mounted on the first mounting plate 88, and the air inlet 811 and the air outlet 8112 are both located between the first mounting plate 88 and the second mounting plate 89. In this way, the first partition plate 16, the second partition plate 86, the first mounting plate 88 and the second mounting plate 89 enclose the air duct 81, so that the motor 83 in the axial flow fan assembly and the motor 83 connected with the air deflector 84 can be mounted on the first mounting plate 88 or the second mounting plate 89, the unit volume can not be increased, and the unit structure is more compact.

In this embodiment, the auxiliary heating pipe 7 for heating the air in the air duct 81 is installed in the air duct 81, and the auxiliary heating pipe 7 is located in the air duct 81 and is installed on the second partition 86. In this way, the exhaust temperature of the duct 81 can be raised, so that a low-temperature environment can be handled. Further, the inlet of the auxiliary heat pipeline 7 is arranged on a pipeline between the heat exchanger 5 and the flash tank 4, and the outlet of the auxiliary heat pipeline 7 is arranged on a pipeline between the flash tank 4 and the evaporator 5, so that an external heat source is not needed, heat dissipated by a part of main pipelines after heat exchange is recovered, the heat exchange rate of the unit is higher, the frosting inhibition effect is better, and compared with the prior art of defrosting with the external heat source, the energy is saved. Further, an outlet of the auxiliary heat pipeline 7 is connected with the flash tank 4, and an auxiliary electronic expansion valve 71 is arranged at an inlet of the auxiliary heat pipeline 7. This can improve heat recovery efficiency, makes the operation of unit more stable. Further, a temperature sensing bulb 73 is installed on the auxiliary heat pipe 7 to detect the temperature of the auxiliary heat pipe 7, and also can detect the outlet water temperature of the heat exchanger 5. Further, a check valve 72 is installed at the outlet of the auxiliary pipeline 7 to prevent liquid return or liquid accumulation of the auxiliary pipeline, so as to ensure that the unit has enough refrigerant operation.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model.

Claims

1. The utility model provides a restrain hot water unit of frosting, includes casing, compressor (1), heat exchanger (3), flash tank (4), evaporimeter (5) and water tank (6), and compressor (1), heat exchanger (3), flash tank (4) and evaporimeter (5) pass through main line (9) and connect into the return circuit of circulation, its characterized in that: be provided with working chamber (11) and heat transfer chamber (12) in the casing, compressor (1), flash tank (4) and be used for controlling the automatically controlled component of unit operation all install in working chamber (11), and evaporator (5) are installed in heat transfer chamber (12) and evaporator (5) back wall can direct with external environment contact, heat exchanger (3) set up in water tank (6), still be provided with wind channel (81) in the casing, air intake (811) and working chamber (11) UNICOM of wind channel (81), air outlet (812) and heat transfer chamber (12) UNICOM of wind channel (81), install axial fan subassembly (82) that are used for extracting air in working chamber (11) in wind channel (81), the exit of wind channel (81) is installed can be with wind channel (81) open or confined aviation baffle (84), and casing are rotated and are connected, still install motor (83) that link to each other with aviation baffle (84) on the casing, thereby wind channel (81) back wall (81) of air controller of wind channel (81) can be controlled to wind channel (84).

2. A frost-inhibiting hot water unit as claimed in claim 1 wherein: a first partition plate (16) is arranged in the shell, and the first partition plate (16) divides the interior of the shell into a working cavity (11) and a heat exchange cavity (12).

3. A frost-inhibiting hot water unit as claimed in claim 2, wherein: the utility model discloses a working chamber (11) internal fixation has second baffle (86), and part first baffle (16), second baffle (86) and part working chamber (11) inner wall enclose into wind channel (81), air outlet (812) of wind channel (81) are seted up on first baffle (16), air intake (811) of wind channel (81) are seted up on second baffle (86).

4. A frost-inhibiting hot water unit as claimed in claim 1 wherein: the air outlet (812) is located at the rear side of the evaporator (5).

5. A frost-inhibiting hot water unit as claimed in claim 1 wherein: an auxiliary heating pipeline (7) for heating air in the air duct (81) is arranged in the air duct (81).

6. The frost suppressing hot water unit of claim 5, wherein: the inlet of the auxiliary pipeline (7) is arranged on a pipeline between the heat exchanger (3) and the flash tank (4), and the outlet of the auxiliary pipeline (7) is arranged on a pipeline between the flash tank (4) and the evaporator (5).

7. The frost-inhibiting water heater assembly of claim 6, wherein: the outlet of the auxiliary heat pipeline (7) is connected with the flash tank (4).

8. The frost suppressing hot water unit of claim 5, wherein: an electronic expansion valve (71) is arranged on the auxiliary heat pipeline (7).

9. The water heater assembly of claim 8, wherein the water heater assembly is configured to inhibit frost formation: an electronic expansion valve (71) is mounted at the inlet of the secondary heat pipe (7).

10. The water heater assembly of claim 8, wherein the water heater assembly is configured to inhibit frost formation: the outlet of the auxiliary heat pipeline (7) is provided with a one-way valve (72).