Heat pump type air curtain system

Abstract

The utility model provides a heat pump type air curtain system which comprises an outdoor unit and a plurality of indoor air curtain machines. The outdoor unit comprises a first shell, a first heat exchanger and a compressor, the first heat exchanger and the compressor are arranged in the first shell, and the compressor is connected with the first heat exchanger; the indoor air curtain machine comprises a second shell, a second heat exchanger and an indoor fan, an air duct is arranged in the second shell, the second heat exchanger and the fan are arranged in the air duct, and the second heat exchanger is connected with the compressor and the first heat exchanger. Compared with the prior art, the heat pump type air curtain system has the advantages that the heat pump technology is adopted, a hot air curtain or a cold air curtain is blown out through the indoor air curtain machines, energy consumption can be reduced, the indoor air curtain machines can be heated or refrigerated through the single outdoor unit, cost is saved, and the safety is higher than that of an electric heating mode.

Description

Technical Field

[0001] The utility model relates to air conditioning in the technical field, in particular to a heat pump type air curtain system. Background Art

[0002] The air curtain machine can separate the indoor and outdoor air, which makes it convenient to enter and exit, and prevents the exchange of hot and cold air between indoor and outdoor. At the same time, it has the effect of dust and pollution prevention. It is widely used in electronics, instrumentation, commerce and other industries.

[0003] In extremely cold regions, the exterior doors of buildings generally use air curtains with heating functions to blow out hot air curtains to reduce the infiltration of cold wind in winter. This is especially true for factory and office buildings where the flow of people entering and exiting the exterior doors is relatively large and frequent, and for industrial buildings where vehicles frequently pass through for loading and unloading. If hot air curtains are not designed, a large amount of cold air will infiltrate, which can easily cause a sudden drop in indoor temperature. However, current air curtains usually use electric heating, which consumes a lot of energy. Especially when there are multiple doors in the same building, multiple air curtains need to be installed at the same time. If each air curtain uses electric heating, the operating cost will be high. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and provide a heat pump type air curtain system.

[0005] One embodiment of the utility model provides a heat pump type air curtain system, comprising: an outdoor unit and a plurality of indoor air curtain units;

[0006] The outdoor unit comprises a first shell, a first heat exchanger and a compressor, wherein the first heat exchanger and the compressor are arranged in the first shell, and the compressor is connected to the first heat exchanger;

[0007] The indoor air curtain includes a second shell, a second heat exchanger and an indoor fan. An air duct is arranged in the second shell. The second heat exchanger and the fan are arranged in the air duct. The second heat exchanger is connected to the compressor and the first heat exchanger respectively.

[0008] In some optional embodiments, the outdoor unit also includes an outdoor fan, a heat exchange cavity is provided in the first shell, an air outlet is provided on one side of the heat exchange cavity, the first heat exchanger is provided in the heat exchange cavity, and the outdoor fan is provided at the air outlet.

[0009] In some optional implementations, the outdoor unit further includes an electric control box, which is disposed on one side of the first shell and is signal-connected to the compressor.

[0010] In some optional embodiments, a cover plate is detachably provided on the side of the electric control box.

[0011] In some optional embodiments, a plurality of drying filters are connected between the first heat exchanger and the second heat exchanger.

[0012] In some optional embodiments, an electronic expansion valve is connected between the first heat exchanger and the second heat exchanger.

[0013] In some optional embodiments, the first heat exchanger is connected to a plurality of the second heat exchangers via a branch pipe.

[0014] In some optional embodiments, the compressor is connected to a gas-liquid separator.

[0015] In some optional embodiments, the indoor air curtain further includes a water receiving tray, which is disposed in the second shell and arranged below the second heat exchanger.

[0016] Compared with the prior art, the heat pump air curtain system of the utility model adopts heat pump technology. After the air is converted into hot and cold by the first heat exchanger of the outdoor unit, the heat exchange medium is transported to the second heat exchanger of each indoor air curtain machine. The second heat exchanger realizes heat exchange with the air in the air duct to complete the heating or cooling of the air, thereby making the indoor air curtain machine blow out hot air or cold air, which is beneficial to reduce energy consumption. Moreover, a single outdoor unit can be used to heat or cool multiple indoor air curtain machines, saving costs. Moreover, it is safer than electric heating.

[0017] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the connection between an outdoor unit and a plurality of indoor air curtain units according to an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the structure of an outdoor unit according to an embodiment of the utility model;

[0020] Figure 3 This is an exploded view of an outdoor unit of an embodiment of the utility model when part of the structure is hidden;

[0021] Figure 4 This is an exploded view of an indoor unit according to an embodiment of the utility model;

[0022] Figure 5 A piping diagram of an outdoor unit and an indoor air curtain unit designed with a heating mode for one embodiment of the utility model;

[0023] Figure 6The outdoor unit and the indoor air curtain unit of one embodiment of the utility model are designed with a piping diagram of a cooling mode.

[0024] Description of reference numerals:

[0025] 10. Outdoor unit; 11. First shell; 111. Heat exchange cavity; 12. First heat exchanger; 13. Compressor; 131. Four-way valve; 14. Outdoor fan; 15. Electric control box; 151. Cover plate; 16. Dry filter; 17. Electronic expansion valve; 18. Branch pipe; 19. Gas-liquid separator; 20. Indoor air curtain; 21. Second shell; 22. Second heat exchanger; 23. Indoor fan; 24. Water tray; 25. Front shell; 26. Rear shell; 27. Side panel. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. In the description of the utility model, unless otherwise specified, "multiple" means 2 or more, and "several" means 1 or more. In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the description of the present utility model, the description with reference to the terms "one embodiment", "some optional implementations" or "some optional embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0030] Air source heat pump technology is an energy-saving and environmentally friendly heating technology based on the reverse Carnot cycle principle. It not only has energy-saving and environmental benefits, but more importantly, it can recycle part of the heat during the heating process, and can establish a heat pump air conditioning system characterized by closed-loop energy recycling.

[0031] See also Figure 1 An embodiment of the utility model provides a heat pump type air curtain system, including: an outdoor unit 10 and a plurality of indoor air curtain units 20.

[0032] See also Figure 2 and Figure 3 The outdoor unit 10 includes a first housing 11, a first heat exchanger 12 and a compressor 13. The first heat exchanger 12 and the compressor 13 are arranged in the first housing 11, and the compressor 13 is connected to the first heat exchanger 12;

[0033] See also Figure 4 The indoor air curtain 20 includes a second shell 21, a second heat exchanger 22 and an indoor fan 23. An air duct is arranged in the second shell 21. The second heat exchanger 22 and the fan are arranged in the air duct. The second heat exchanger 22 is connected to the compressor 13 and the first heat exchanger 12 respectively.

[0034] See also Figure 5In cold areas, it is necessary to heat the room. The heat pump type air curtain system is designed with a heating mode. The first heat exchanger 12 uses an evaporator, and the second heat exchanger 22 uses a condenser. The output end of the first heat exchanger 12, the compressor 13, the input end of the second heat exchanger 22, the output end of the second heat exchanger 22 and the input end of the first heat exchanger 12 are connected in sequence through pipelines, so as to realize the circulation of the heat exchange medium in the overall system. After the heat exchange medium in the first heat exchanger 12 enters the compressor 13, it becomes a high-temperature heat exchange medium, and then is input into the second heat exchanger 22. The second heat exchanger 22 performs convection heat exchange with the air in the air duct, and then the heat exchange medium in the second heat exchanger 22 returns to a normal temperature heat exchange medium, and the air in the air duct is heated and blown out from the air duct to form a hot air curtain, and the normal temperature heat exchange medium returns to the first heat exchanger 12, and then the first heat exchanger 12 performs convection heat exchange with the outdoor air, and the heat exchange medium absorbs heat and becomes gaseous, and then the heat exchange medium is transported to the compressor 13 to realize circulation.

[0035] See also Figure 6 In hot areas, indoor cooling is required. The heat pump type air curtain system is designed with a cooling mode. The first heat exchanger 12 uses a condenser, and the second heat exchanger 22 uses an evaporator. The output end of the first heat exchanger 12, the input end of the second heat exchanger 22, the output end of the second heat exchanger 22, the compressor 13 and the input end of the first heat exchanger 12 are connected in sequence through pipelines, thereby realizing the circulation of the heat exchange medium in the overall system. The gaseous heat exchange medium in the first heat exchanger 12 enters the second heat exchanger 22, and the second heat exchanger 22 performs convection heat exchange with the air in the air duct, and then the heat exchange medium in the second heat exchanger 22 is turned back into a liquid state, and the air in the air duct is cooled and blown out of the air duct to form a cold air curtain, and the liquid heat exchange medium returns to the compressor 13, and returns to the first heat exchanger 12 under the pressure of the compressor 13, and then the first heat exchanger 12 performs convection heat exchange with the outdoor air, and the heat exchange medium absorbs heat and becomes gaseous to realize circulation.

[0036] According to the heating or cooling requirements, the first heat exchanger 12 and the second heat exchanger 22 are designed accordingly, so that the heat pump type air curtain system can be used for cooling or heating. After the first heat exchanger 12 of the outdoor unit 10 converts the air into cold and hot, the heat exchange medium is transported to the second heat exchanger 22 of each indoor air curtain machine 20. The second heat exchanger 22 realizes heat exchange with the air in the air duct, and the heating or cooling of the air can be completed, so that the indoor air curtain machine 20 blows out hot air or cold air. The indoor and outdoor hot and cold air are exchanged by the convection heat exchange between the heat exchange medium and the air, and the heat transfer medium can be recycled, which is conducive to reducing energy consumption. A single outdoor unit 10 can be used to heat or cool multiple indoor air curtain machines 20, which is conducive to streamlining the overall structure and saving costs. In addition, compared with the electric heating form, the heating safety of the heat pump technology is higher.

[0037] In some optional embodiments, the outdoor unit 10 also includes an outdoor fan 14, a heat exchange cavity 111 is provided in the first shell 11, an air outlet is provided on one side of the heat exchange cavity 111, the first heat exchanger 12 is provided in the heat exchange cavity 111, and the outdoor fan 14 is provided at the air outlet. The outdoor fan 14 is used to drive the gas flow, thereby facilitating heat exchange between the first heat exchanger 12 and air convection.

[0038] In some optional embodiments, the outdoor unit 10 further includes an electric control box 15 , which is disposed on one side of the first housing 11 , and the electric control box 15 is signal-connected to the compressor 13 to facilitate electric control.

[0039] In some optional embodiments, a cover plate 151 is detachably provided on the side of the electric control box 15 to facilitate maintenance. The cover plate 151 can be detachably connected to the electric control box 15 through a threaded structure or a snap-fit ​​structure.

[0040] In some optional embodiments, a plurality of drying filters 16 are connected between the first heat exchanger 12 and the second heat exchanger 22. The drying filters 16 mainly play a role in filtering impurities from the heat exchange medium.

[0041] In some optional embodiments, an electronic expansion valve 17 is connected between the first heat exchanger 12 and the second heat exchanger 22. The electronic expansion valve 17 uses the electrical signal generated by the adjusted parameter to control the voltage or current applied to the expansion valve, thereby achieving the purpose of adjusting the flow rate of the heat exchange medium. In this embodiment, the electronic expansion valve 17 is connected to the electric control box 15 by signal.

[0042] In some optional embodiments, the first heat exchanger 12 is connected to the plurality of second heat exchangers 22 via a branch pipe 18. The branch pipe 18 is equivalent to the fork of a water pipe and is used to divert the heat exchange medium. The branch pipe 18 has a main pipe and a plurality of branch pipes. When the first heat exchanger 12 adopts an evaporator, the output ends of the plurality of second heat exchangers 22 are connected to the plurality of branch pipes of the branch pipe 18, and the main pipe is connected to the input end of the first heat exchanger 12. When the first heat exchanger 12 adopts a condenser, the input ends of the plurality of second heat exchangers 22 are connected to the plurality of branch pipes of the branch pipe 18, and the main pipe is connected to the output end of the first heat exchanger 12.

[0043] In this embodiment, when the first heat exchanger 12 adopts an evaporator, the output end of the first heat exchanger 12, the drying filter 16, the electronic expansion valve 17, the drying filter 16, the branch pipe 18 and the input end of the second heat exchanger 22 are connected; when the first heat exchanger 12 adopts a condenser, the input end of the first heat exchanger 12, the drying filter 16, the electronic expansion valve 17, the drying filter 16, the branch pipe 18 and the output end of the second heat exchanger 22 are connected.

[0044] In some optional embodiments, the compressor 13 is connected to a gas-liquid separator 19. The gas-liquid separator 19 adopts the principles of centrifugal separation and wire mesh filtration to achieve coarse filtration and remove part of the moisture in the gaseous heat exchange medium to reduce the workload of the drying device.

[0045] In this embodiment, the compressor 13 is connected to a four-way valve 131, and the compressor 13, the first port of the four-way valve 131, the second port of the four-way valve 131, the gas-liquid separator 19 and the compressor 13 are connected in sequence to form a cycle. When the first heat exchanger 12 adopts an evaporator, the output end of the first heat exchanger 12, the third port of the four-way valve 131, the first port of the four-way valve 131 and the compressor 13 are connected in sequence, and the compressor 13, the first port of the four-way valve 131, the fourth port of the four-way valve 131 and the input end of the second heat exchanger 22 are connected in sequence; when the first heat exchanger 12 adopts a condenser, the input end of the first heat exchanger 12, the third port of the four-way valve 131, the first port of the four-way valve 131 and the compressor 13 are connected in sequence, and the compressor 13, the first port of the four-way valve 131, the fourth port of the four-way valve 131 and the output end of the second heat exchanger 22 are connected in sequence.

[0046] In some optional embodiments, the indoor air curtain 20 further includes a water receiving tray 24 , which is disposed in the second shell 21 and arranged below the second heat exchanger 22 for receiving water condensed on the second heat exchanger 22 .

[0047] In this embodiment, the second housing 21 includes a front housing 25, a rear housing 26 and two side panels 27. The front housing 25 and the rear housing 26 are detachably connected by a threaded structure. The two side panels 27 are detachably arranged on both sides of the front housing 25 by a threaded structure. The front housing 25, the rear housing 26 and the two side panels 27 surround and form an air duct. An air inlet grille is arranged on the front housing 25.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat pump type air curtain system, characterized in that: include: Outdoor unit and multiple indoor air curtain units; The outdoor unit comprises a first shell, a first heat exchanger and a compressor, wherein the first heat exchanger and the compressor are arranged in the first shell, and the compressor is connected to the first heat exchanger; The indoor air curtain includes a second shell, a second heat exchanger and an indoor fan. An air duct is arranged in the second shell. The second heat exchanger and the fan are arranged in the air duct. The second heat exchanger is connected to the compressor and the first heat exchanger respectively.

2. A heat pump type air curtain system according to claim 1, characterized in that: The outdoor unit further includes an outdoor fan. A heat exchange cavity is provided in the first shell, an air outlet is provided on one side of the heat exchange cavity, the first heat exchanger is provided in the heat exchange cavity, and the outdoor fan is provided at the air outlet.

3. A heat pump type air curtain system according to claim 1, characterized in that: The outdoor unit further includes an electric control box, which is disposed on one side of the first shell and is connected to the compressor signal.

4. A heat pump type air curtain system according to claim 3, characterized in that: A cover plate is detachably provided on the side of the electric control box.

5. A heat pump type air curtain system according to claim 1, characterized in that: A plurality of drying filters are connected between the first heat exchanger and the second heat exchanger.

6. A heat pump type air curtain system according to claim 1, characterized in that: An electronic expansion valve is connected between the first heat exchanger and the second heat exchanger.

7. A heat pump type air curtain system according to claim 1, characterized in that: The first heat exchanger is connected to a plurality of the second heat exchangers via a branch pipe.

8. A heat pump type air curtain system according to claim 1, characterized in that: The compressor is connected with a gas-liquid separator.

9. A heat pump type air curtain system according to claim 1, characterized in that: The indoor air curtain machine further includes a water receiving pan, which is disposed in the second shell and below the second heat exchanger.

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