Commercial coffee machine

Abstract

The utility model discloses a commercial coffee machine which comprises a brewing head, an extraction boiler and a heating core, an internal circulation water path is arranged between the brewing head and the extraction boiler, the heating core is arranged on the extraction boiler and used for heating water in the extraction boiler, and heated water flows in the internal circulation water path to achieve heat exchange of the extraction boiler. The system is characterized by further comprising a first water pump, and the first water pump is arranged on a water inlet pipeline of the internal circulation water path. The efficiency of internal circulation can be greatly accelerated by adding water pump forced circulation. And hot water in the boiler quickly exchanges heat with the brewing head. Therefore, the preheating time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to beverage preparation device technical field, especially in commercial coffee machine. BACKGROUND

[0002] At present, there are some machines on the market of commercial coffee machine that use the heat siphon principle to make coffee liquid. For example, the water heating device for American coffee machine disclosed in the Chinese utility model with the application number CN202122908970.X uses siphon effect as power to transport water, without using water pump, and has low cost. The heat siphon principle is adopted to achieve the effect of preheating the brewing head by heat exchanging and internal circulation of hot water in the extraction boiler and the brewing head. However, there are two shortcomings:

[0003] The efficiency of heat siphon is slow, and it usually takes 25-30 minutes for the heat in the extraction boiler to be transferred to the brewing head in the products on the market, which requires a long preheating time.

[0004] When continuously making coffee, the compensating water cannot be quickly heated, and the water temperature cannot be guaranteed to meet the setting. The specific reason is that the heat siphon and the compensating heat energy transfer of the brewing head are slow, and the temperature of the compensating water cannot be quickly raised to the setting temperature, so the water temperature will quickly decrease when continuously serving cups. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a commercial coffee machine that shortens the preheating time and has the advantage of fast heat compensation to overcome the shortcomings of the prior art.

[0006] In order to solve the above technical problems, the technical scheme of the utility model is as follows:

[0007] A commercial coffee machine, comprising a brewing head, an extraction boiler, and a heating core, an internal circulation waterway is arranged between the brewing head and the extraction boiler, the heating core is arranged on the extraction boiler for heating the water in the extraction boiler, the heated water flows in the internal circulation waterway to realize heat exchange of the extraction boiler, characterized in that: a first water pump is further arranged on the water inlet pipeline of the internal circulation waterway.

[0008] The first water pump is a direct-drive water pump, which comprises a direct-drive water pump impeller, a direct-drive water pump upper cover, a direct-drive water pump motor, and a direct-drive water pump base. The direct-drive water pump impeller is arranged in the flow channel of the direct-drive water pump base, and the direct-drive water pump motor drives the rotation.

[0009] The commercial coffee machine described above further comprises a direct-drive water pump mounting bracket, and the direct-drive water pump motor and / or the direct-drive water pump base are mounted on the direct-drive water pump mounting bracket.

[0010] The first water pump is a non-contact water pump, which comprises an impeller, an impeller magnet, an impeller rotating shaft, a water pump motor, a motor rotor magnet and a motor rotor.

[0011] The water pump base is provided with an impeller mounting cavity, the bottom of the impeller mounting cavity is provided with a first shaft seat, the top of the impeller mounting cavity is open, and a water pump upper cover is arranged on the top opening, the water pump upper cover is provided with a second shaft seat, and the impeller rotating shaft is mounted on the first shaft seat and the second shaft seat.

[0012] The first water pump is connected with the brewing head through an adapter assembly.

[0013] The above technical scheme has the following beneficial effects:

[0014] The water pump forced circulation can greatly accelerate the efficiency of the internal circulation.

[0015] The pipe diameter of the internal circulation is different, the inlet pipe diameter of the brewing head is larger than the outlet pipe diameter, so that the water flow has a flow rate difference. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0017] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0018] Figure 1 is a commercial coffee machine water system structure schematic diagram of the present application.

[0019] Figure 2 is the longitudinal and horizontal sectional view of the motor direct drive water pump of the water system of the utility model.

[0020] Figure 3 is the longitudinal and horizontal sectional view of the non-contact water pump of the water system of the utility model.

[0021] In the figure: brewing head 1, adapter assembly 2, first water pump 3, water inlet pipeline 4, extraction boiler 5, heating core 6, water return pipe 7, direct drive water pump impeller 11, direct drive water pump upper cover 12, direct drive water pump O-shaped ring 13, direct drive water pump base 16, direct drive water pump mounting bracket 17, direct drive water pump motor 18, non-contact water pump impeller 21, non-contact water pump impeller magnet 22, non-contact water pump impeller rotating shaft 23, non-contact water pump upper cover 24, non-contact water pump motor 27, motor rotor magnet 28, motor rotor 29. DETAILED DESCRIPTION

[0022] The specific embodiments of the utility model will be further described below in combination with the drawings. It needs to be explained here that the description of these embodiments is used to help understand the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Referring to Figure 1 , the utility model discloses a kind of commercial coffee machine, including brewing head 1, first water pump 3, extraction boiler 5, heating core 6, inner circulation waterway is arranged between brewing head and extraction boiler, heating core is arranged on extraction boiler and is used to heat the water body in extraction boiler, heated water flow flows in inner circulation waterway to realize heat exchange to extraction boiler, first water pump 3 is arranged on the water inlet pipeline 4 of inner circulation waterway, hot water of extraction boiler 5 enters brewing head 1 through water inlet pipeline 4, brewing head is heated, then from water return pipe 7 back to extraction boiler 5.

[0024] First water pump can be direct drive water pump, or non-contact water pump, referring to Figure 2 , direct drive water pump includes direct drive water pump impeller 11, direct drive water pump upper cover 12, direct drive water pump O-shaped ring 13, direct drive water pump base 16, direct drive water pump mounting bracket 17, direct drive water pump motor 18. Direct drive water pump impeller is arranged in the flow passage of direct drive water pump base, and direct drive water pump motor 18 drives direct drive water pump impeller 11 to rotate. Direct drive water pump motor and / or direct drive water pump base are mounted on direct drive water pump mounting bracket.

[0025] Referring to Figure 3, the first water pump adopts a non-contact water pump, the non-contact water pump comprising a non-contact water pump impeller 21, a non-contact water pump impeller magnet 22, a non-contact water pump impeller rotating shaft 23, a non-contact water pump upper cover 24, a non-contact water pump motor 27, a motor rotor magnet 28, and a motor rotor 29. The non-contact water pump impeller magnet is fixed on the non-contact water pump impeller, and the non-contact water pump impeller magnet is inside the flow channel of the water pump base, while the non-contact water pump motor rotor magnet is outside the flow channel of the water pump base. The motor rotor 29 drives the motor rotor magnet 28 to rotate, and the motor rotor magnet 28 drives the impeller magnet to rotate. The water pump base is provided with an impeller mounting cavity, the bottom of the impeller mounting cavity is provided with a first shaft seat, the top of the impeller mounting cavity is open, and the water pump upper cover 24 is arranged on the top opening, the water pump upper cover is provided with a second shaft seat, and the non-contact water pump impeller rotating shaft 23 is mounted on the first shaft seat and the second shaft seat.

[0026] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A commercial coffee machine comprising a brewing head (1), an extraction boiler (5), a heating core (6), an internal circulation water circuit being provided between the brewing head (1) and the extraction boiler (5), the heating core being provided on the extraction boiler for heating the water contained in the extraction boiler, the heated water flowing in the internal circulation water circuit for heat exchange with the extraction boiler (5), characterized in that: The first water pump (3) is arranged on the water inlet pipeline of the inner circulation water channel.

2. The commercial coffee machine according to claim 1, characterized in that: The first water pump (3) is a direct-drive water pump, which comprises a direct-drive water pump impeller, a direct-drive water pump upper cover, a direct-drive water pump motor and a direct-drive water pump base. The direct-drive water pump impeller is arranged in the flow channel of the direct-drive water pump base. The direct-drive water pump motor drives the direct-drive water pump impeller to rotate.

3. The commercial coffee machine according to claim 2, characterized in that: The direct-drive water pump motor and / or the direct-drive water pump base are arranged on the direct-drive water pump mounting bracket.

4. The commercial coffee maker of claim 1, wherein: The first water pump (3) is a non-contact water pump, which comprises an impeller, an impeller magnet, an impeller rotating shaft, a water pump motor, a motor rotor magnet and a motor rotor. The impeller magnet is fixed on the impeller. The impeller magnet is arranged in the flow channel of the water pump base, and the motor rotor magnet is arranged outside the flow channel of the water pump base. The motor rotor drives the motor rotor magnet to rotate, and the motor rotor magnet drives the impeller magnet to rotate.

5. The commercial coffee machine according to claim 4, characterized in that: The water pump base is provided with an impeller mounting cavity. The bottom of the impeller mounting cavity is provided with a first shaft seat. The top of the impeller mounting cavity is open. A water pump upper cover is arranged on the top opening. The water pump upper cover is provided with a second shaft seat. The impeller rotating shaft is arranged on the first shaft seat and the second shaft seat.

6. The commercial coffee machine according to any one of claims 1 to 5, characterized in that: The first water pump (3) is connected with the brewing head (1) through the adapter assembly (2).

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