JP2005299997A - Beverage cooling and pouring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beverage cooling and pouring device capable of continuous cooling operation wherein a compressor protective device is not activated even under a high load condition during an initial pull down. <P>SOLUTION: The beverage cooling and pouring device comprises an overload detecting means for detecting that a compressor 5 is in an overloaded state, an overload determining means for judging that the compressor 5 is in the overloaded state by the overload detecting means, and an agitation motor control means for lowering rotation of an agitation motor 11 when there is an overloaded state. Control is carried out for suppressing a flow velocity of cooling water 1 when the compressor 5 is in the overloaded state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a beverage cooling and dispensing apparatus for instantly cooling and dispensing a beverage such as beer.

  Conventionally, this type of beverage cooling and dispensing apparatus is installed in restaurants and the like as a beer server that instantaneously cools beverages such as beer (see, for example, Patent Document 1).

FIG. 2 is a configuration diagram of the conventional beverage cooling and dispensing apparatus described in Patent Document 1 as seen from the side. As shown in FIG. 2, a beverage cooling / pouring device 4 is composed of a water tank 2 for storing cooling water 1 and a cooling unit 3. The cooling unit 3 is a refrigeration cycle in which a compressor 5, a condenser 6, a decompressor 7, and an evaporator 8 are sequentially connected by piping. A part of the cooling water 1 is frozen by the evaporator 8 to form ice. The beverage pipe 9 allows the beverage 10 to pass from the outside of the aquarium 2 into the aquarium 1 so that heat is exchanged between the beverage 10 and the cooling water 1 to cool the beverage 10 and then pour out to the outside. . Further, by stirring the cooling water 1 by rotating the stirring blade 12 by the stirring motor 11, the temperature of the cooling water 1 is made uniform, and the temperature of the cooling water 1 does not rise partially or temporarily. It is to make.
JP 2000-88425 A

  However, in the above conventional configuration, when the initial pull-down is performed, particularly when an overload condition such as a high water temperature, a low voltage, and a high ambient temperature has passed for a certain period of time, the low pressure of the compressor increases excessively. As a result, the operating current and the shell temperature rise excessively, and the compressor protection device becomes easier to operate. Therefore, it has the subject that it becomes impossible to cool a water tank by the abnormal stop of a compressor.

  This invention solves the said conventional subject, and it aims at providing the drink cooling extraction apparatus which can carry out continuous cooling operation, without a compressor protection apparatus operating even under high load conditions at the time of initial pull-down. .

  In order to solve the above-described conventional problems, the beverage cooling / pouring device of the present invention includes a water tank for storing cooling water, a compressor, a condenser, a decompressor, and an evaporator, which are sequentially connected to each other by the evaporator. A cooling unit that freezes a part of the cooling water to form ice, and a beverage supplied from outside the water tank is allowed to pass through and heat exchange is performed between the beverage and the cooling water to cool the beverage. An overload detection means for detecting that the compressor is in an overload state, comprising a beverage pipe to be poured out to the outside, a stirring blade for stirring the cooling water, and a stirring motor for rotating the stirring blade; The overload detection means for determining that the compressor is overloaded by the overload detection means, and the agitation motor control means for reducing the rotation of the agitation motor in the overload state. It is.

  As a result, when the overload state of the compressor is detected, the evaporation capacity can be suppressed and the low pressure can be lowered by controlling the flow rate of the cooling water. Therefore, even in an overload state, since the operating current and the shell temperature do not rise to the current / temperature level at which the compressor protection device operates, a stable cooling operation can be provided without the protection device operating.

  The beverage cooling and dispensing apparatus according to the present invention further includes an overload detection unit that detects an evaporation temperature, and an overload determination unit that determines that the compressor is in an overload state when the evaporation temperature exceeds a predetermined temperature. It is provided.

  Accordingly, it is possible to detect the overload state of the compressor using a temperature sensor that is cheaper than the pressure sensor.

  The beverage cooling and dispensing apparatus according to the present invention includes an overload detection unit that detects an operating current of the compressor and a shell temperature of the compressor, and a calculation value including the operating current and the shell temperature exceeds a predetermined value. And an overload determining means for determining that the compressor is in an overload state.

  Thereby, since the operating current and the shell temperature of the compressor, which are the characteristics of the compressor protection device, are directly detected, it is possible to accurately detect whether or not it is in an overload state.

  The beverage cooling and dispensing apparatus of the present invention includes an overload detection unit that detects a water temperature in the aquarium, and an overload determination unit that determines that the compressor is in an overload state when the water temperature exceeds a predetermined value. Is provided.

  As a result, the water temperature detection means of the present invention and the temperature detection means for water temperature management and water supply can be shared, resulting in cost reduction.

  The beverage cooling and dispensing apparatus according to the present invention is capable of stable cooling operation without operation of the protective device by controlling the flow rate of the cooling water when the overload state of the compressor is detected. A device can be provided to customers.

  Moreover, since the drink cooling and dispensing apparatus of the present invention can detect the overload state of the compressor using the temperature sensor, it becomes more inexpensive.

  In addition, the beverage cooling / pouring device of the present invention can detect the overload state of the compressor using the compressor operating current and the compressor shell temperature, so that it can accurately detect the limit of the compressor protection device. It is possible to prevent the cooling capacity from being lowered unnecessarily.

  Moreover, since the beverage cooling / pouring device of the present invention can detect the overload state by detecting the water temperature in the aquarium, it can be shared with the temperature detection means for water temperature management and water supply required as a beverage cooling / pouring device. Cost reduction.

  According to the first aspect of the present invention, a water tank for storing cooling water, a compressor, a condenser, a decompressor, and an evaporator are sequentially connected to each other, and a part of the cooling water is frozen by the evaporator to thereby form ice. A cooling unit to be formed, a beverage pipe that passes the beverage supplied from the outside of the aquarium and cools the beverage after allowing the beverage and the cooling water to exchange heat, and the beverage pipe, An agitation blade for agitating the cooling water and an agitation motor for rotating the agitation blade, the overload detection means for detecting that the compressor is in an overload state, and the compressor by the overload detection means An overload state of the compressor is constituted by an overload determination unit that determines that it is in an overload state, and an agitation motor control unit that reduces rotation of the agitation motor in the case of the overload state. To reduce the flow rate of cooling water Control, evaporative capacity can be suppressed and low pressure can be lowered, and it is not necessary to raise the operating current and shell temperature to the current and temperature level where the compressor protection device operates, so the protection device does not operate In addition, stable cooling operation is possible and reliable equipment can be provided to customers.

  According to a second aspect of the present invention, there is provided the beverage cooling and dispensing apparatus according to the first aspect of the present invention, wherein the overload detecting means for detecting the low pressure and the compressor is overloaded when the low pressure exceeds a predetermined pressure. The overload state can be grasped more specifically by adopting a configuration comprising overload determination means for determining that the state is the state.

  According to a third aspect of the present invention, there is provided the beverage cooling / pouring device according to the first aspect of the present invention, wherein the overload detecting means for detecting the evaporation temperature and the compressor is excessive when the evaporation temperature exceeds a predetermined temperature. By adopting a configuration comprising overload determination means for determining that the load is present, it is possible to detect the overload state of the compressor using a temperature sensor that is less expensive such as a pressure sensor.

  According to a fourth aspect of the present invention, there is provided the beverage cooling / pouring device according to the first aspect of the present invention, the overload detecting means for detecting the operating current of the compressor and the shell temperature of the compressor, the operating current and the By comprising an overload determining means for determining that the compressor is in an overload state when the calculated value consisting of the shell temperature exceeds a predetermined value, the operating current and the compression which are the characteristics of the compressor protection device Since the shell temperature of the machine is directly detected, it can be accurately detected whether or not it is overloaded.

  According to a fifth aspect of the present invention, there is provided the beverage cooling / pouring device according to the first aspect of the present invention, wherein the overload detecting means for detecting the water temperature in the aquarium and the compressor when the water temperature exceeds a predetermined value. By comprising an overload determination means that determines that the overload state is detected, the overload state can be determined by detecting the water temperature in the aquarium. This can be shared with the temperature detection means for water supply, which reduces costs.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a configuration diagram viewed from the side of a beverage cooling and dispensing apparatus according to Embodiment 1 of the present invention.

  In the invention of this embodiment, parts having the same configuration and operation as those of the background art are denoted by the same reference numerals, detailed description thereof is omitted, and different parts are mainly described.

  In FIG. 1, the first control device CN1 detects an overload detection unit that detects that the compressor 5 is in an overload state, and an overload detection unit that determines that the compressor 5 is in an overload state by the overload detection unit. The load determination means and the stirring motor control means for reducing the rotation of the stirring motor 11 in the overload state. The pressure sensor LP is an overload detection unit that detects a low pressure Ps that is a suction portion pressure of the compressor 5 (or an evaporation pressure Pe that is a pressure of the evaporator 16).

  The operation and action of the beverage cooling and dispensing apparatus configured as described above will be described below.

  During the cooling operation of the beverage cooling and dispensing apparatus 4, the low pressure Ps (or the evaporation pressure Pe) is sequentially detected by the pressure sensor LP which is an overload detection means. Next, when the detected low pressure Ps (or evaporation pressure Pe) exceeds the predetermined pressure P1 determined by the overload determination means, it is determined that the compressor 5 is in an overload state. . At this time, the rotation of the stirring motor 11 is reduced by the stirring motor control means.

  Thereby, by performing control which suppresses the flow rate of the cooling water 1 to the overload state of the compressor 5, the evaporation capability can be suppressed low, and as a result, the low pressure can be reduced. Therefore, since the operating current and the shell temperature are not increased to the current / temperature level at which the protection device of the compressor 5 operates, the protection device does not operate. Therefore, stable cooling operation is possible, and reliable equipment can be provided to customers.

  Further, the overload state of the compressor 5 can also be detected by detecting the evaporation temperature Te using a temperature sensor as overload detection means. The overload determination means in this case determines that the compressor 5 is in an overload state when the evaporation temperature Te exceeds a predetermined temperature T1. Therefore, the cost is lower than when a pressure sensor is used as the overload detection means.

  Moreover, the overload state of the compressor 5 can also be detected by detecting the operating current I and the shell temperature TS of the compressor 5 as overload detection means. When the operating current I and the shell temperature TS exceed the predetermined operating current I1 and the shell temperature TS1, the overload determination unit determines that the compressor 5 is in an overload state. In this case, since the operating current and the shell temperature of the compressor, which are the operation parameters of the protective device of the compressor 5, can be directly detected, it is possible to accurately detect whether the compressor 5 is in an overload state. Therefore, the operation can be continued without reducing the cooling capacity up to the limit of the operation limit of the compressor protection device.

  Further, the overload state of the compressor 5 can also be detected by detecting the water temperature TW of the cooling water 1 as overload detection means. When the water temperature TW exceeds a predetermined water temperature TW1, the overload determination means determines that the compressor 5 is in an overload state. In this case, since the water temperature TW of the cooling water 1 is detected, the water temperature display necessary for the beverage cooling / pouring device and the means for determining the presence or absence of the cooling water can be shared, thereby reducing the cost.

  As described above, in the present embodiment, it is determined that the compressor 5 is overloaded by the overload detecting means for detecting that the compressor 5 is overloaded and the overload detecting means. Since the first control device CN1 including the overload determination unit and the agitation motor control unit that reduces the rotation of the agitation motor 11 when in an overload state is provided, the compressor 5 is in an overload state. When judged, the rotation of the agitation motor 11 is reduced by the agitation motor control means, and the flow rate of the cooling water 1 is suppressed to the overload state of the compressor 5. Therefore, the evaporation capacity can be kept low, and as a result, the low pressure can be lowered, and since the operating current and the shell temperature are not increased to the current / temperature level at which the protective device of the compressor 5 operates, the protective device operates. There is no. Therefore, stable cooling operation is possible, and reliable equipment can be provided to customers.

  In this embodiment, the rotation of the agitation motor 11 is reduced to suppress the flow rate of the cooling water 1. However, it goes without saying that the same effect can be obtained by completely stopping the rotation of the agitation motor 11.

  Further, in the present embodiment, a part of the cooling water 1 is frozen to form ice, but it goes without saying that a cool storage material other than the cooling water 1 has the same action.

  As described above, the beverage cooling and dispensing apparatus according to the present invention can provide a stable cooling operation even under severe conditions, and thus can be widely applied to uses such as refrigerators, showcases, and other cooling devices.

The block diagram seen from the side of the drink cooling and dispensing apparatus in Embodiment 1 of this invention Configuration diagram viewed from the side of a conventional beverage cooling and dispensing device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cooling water 2 Water tank 3 Cooling unit 4 Beverage cooling / pouring device 5 Compressor 6 Condenser 7 Depressurizer 8 Evaporator 9 Beverage pipe 10 Beverage 11 Stirring motor 12 Stirring blade LP Pressure sensor (overload detection means)

Claims (5)

  A water tank for storing cooling water, a cooling unit that sequentially connects a compressor, a condenser, a decompressor, and an evaporator and freezes a part of the cooling water by the evaporator to form ice; and A beverage pipe that passes the beverage supplied from the outside and performs heat exchange between the beverage and the cooling water to cool the beverage and then pours it outside; a stirring blade that stirs the cooling water; An overload detecting means for detecting that the compressor is in an overload state; and an overload detecting means for determining that the compressor is in an overload state by the overload detection means. A beverage cooling and dispensing apparatus comprising: a load determination unit; and a stirring motor control unit that reduces the rotation of the stirring motor in the overload state.   The beverage cooling and pouring device according to claim 1, further comprising an overload detecting means for detecting a low pressure and an overload determining means for determining that the compressor is in an overload state when the low pressure exceeds a predetermined pressure. .   The beverage cooling and pouring device according to claim 1, further comprising an overload detecting means for detecting an evaporation temperature and an overload determining means for determining that the compressor is in an overload state when the evaporation temperature exceeds a predetermined temperature. .   An overload detecting means for detecting an operating current of the compressor and a shell temperature of the compressor; and when a calculated value comprising the operating current and the shell temperature exceeds a predetermined value, the compressor is determined to be in an overload state. The beverage cooling / pouring device according to claim 1, further comprising overload determination means for performing the operation.   The beverage cooling and pouring according to claim 1, further comprising overload detection means for detecting a water temperature in the aquarium and overload determination means for determining that the compressor is in an overload state when the water temperature exceeds a predetermined value. apparatus.