JP2017003239A - Ice-making machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ice-making machine in which the possibility of generating a clogged state of ice in a compression head is reduced and ice of high quality is made.SOLUTION: When a low level float switch 421 detects a low water level state, number of times measuring means 43 records the number of times in which the low level float switch 421 detects the low water level state as one time. When the number of times measuring means 43 records that the number of times in which a high level float switch 420 detects a high water level state and the number of times in which the low level float switch 421 detects the low water level state are both one time, it is assumed that after starting an ice-making operation of an auger type ice-making machine 1, the ice-making operation is carried out until a water level of ice-making water at a water supply tank 40 changes from the high water level state to the low water level state, operation of a heater heats ice scraped out by a compression head to melt the surface of the ice in the compression head and cause the ice in the compression head to be easily discharged out during the ice-making operation.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ice making machine, and more particularly to an ice making machine provided with a heater for heating a compression head.

  An auger type ice making machine that is an ice making machine having an auger provided with an ice cutting blade is generally known. The auger type ice making machine includes an ice making mechanism. The ice making mechanism is wound around an outer surface of a cylindrical refrigeration casing (hereinafter referred to as “cylinder”) with an evaporation pipe through which a cooling refrigerant flows, and is coaxial with the longitudinal axis of the cylinder and is rotatable inside the cylinder. An auger is provided. On the other hand, the ice making water supplied into the cylinder from the water supply pipe at the bottom of the cylinder is cooled by the refrigerant and freezes in layers on the cylinder inner surface. When the auger provided with the spiral blade is rotated by the geared motor, the frozen ice is scraped off like a sherbet and conveyed above the cylinder. The conveyed ice is compressed by a compression head provided at the upper part of the cylinder, and is crushed by a cutter to produce suitable granular ice.

  In such an auger type ice making machine, the ice making capacity, which is the amount of ice making per predetermined time, varies depending on the ambient temperature and the temperature of the ice making water. Therefore, if the ice making capacity is excessive, ice clogging may occur in the compression head. Further, since the compressed ice remains in the compression head after the start of the ice making operation, air and water may be formed in the ice making water without discharging bubbles contained in the ice making water from above the cylinder at the time of water supply. In this case, the ice conveyed upward by the spiral blade may be idled by the air layer, and may be jammed in the cylinder without being conveyed above the air layer.

  A conventional auger type ice making machine is described in Patent Document 1. This auger type ice making machine is provided with a heater so as to surround the outer periphery of the compression head. Since the ice in the compression head is heated by the heater to melt the ice surface in the compression head, the ice in the compression head is easily released.

Japanese Utility Model Publication No. 7-41362

However, in the invention described in Patent Document 1, for a while after the start of the ice making operation, the ice is easily melted by the compression head because the heater is heated even when the state of the cylinder is unstable and the amount of ice to be made is small. There is a problem that ice that is not sufficiently compressed and has a high water content and is soft and poor in quality is produced.

  The present invention has been made to solve such problems, and an object thereof is to provide an ice making machine that reduces the possibility of ice clogging in a compression head and produces high-quality ice.

  The ice making machine according to the present invention is expanded by the compressor that compresses the refrigerant, the condenser that condenses the refrigerant compressed by the compressor, the expansion valve that expands the refrigerant condensed in the condenser, and the expansion valve. Rotating the evaporating pipe through which the refrigerant circulates, the cylinder in which the ice making water is frozen by the heat exchange between the refrigerant flowing through the evaporating pipe and the ice making water, and the auger provided inside the cylinder A geared motor, a water supply tank that stores ice-making water supplied to the inside of the cylinder, a compression head that compresses the ice made inside the cylinder after slicing with an auger, a heater that heats the compression head, and a water supply tank And a float switch for detecting a high water level in which the ice making water level in the water supply tank is a predetermined high water level and a low water level state in which the predetermined low water level is detected. The ice making machine is equipped with measuring means for measuring information related to the ice making capacity of the ice making machine, and before starting the ice making operation by operating the compressor, the geared motor is operated and the heater is operated, and then When the preset time has elapsed, the ice making operation is started. After the ice making operation is started, the information measured by the measuring means is compared with the preset condition for the information, and the information satisfies the preset condition. Based on whether or not, the heater is switched between operation and stop.

The measuring means measures as information that the water level in the water supply tank has dropped due to ice making operation after the float switch detects a high water level condition and has detected a low water level condition. Ice making water is supplied until the water condition is reached, the float switch detects the high water level, and then the heater is stopped when the ice making operation is started.After the ice making operation is started, the water level in the water supply tank is lowered by the ice making operation and the water level is low. The heater may be operated when the state is detected.
The measuring means is a timer for measuring the operation time of the compressor as information, stops the heater when the ice making operation starts, and operates the heater when the operation time of the compressor is equal to or more than a preset operation time threshold. May be.
It is equipped with a water supply valve that closes when the float switch detects a high water level and stops supplying water to the water tank, and opens when the float switch detects a low water level to supply water to the water tank. The means is an open / close interval measuring means for measuring the open / close interval of the water supply valve, stops the heater when the ice making operation starts, and then turns on the heater when the open / close interval of the water supply valve is less than a preset open / close interval threshold. After the operation, the heater may be stopped when the open / close interval of the water supply valve is equal to or greater than a preset open / close interval threshold.
The measuring means is an outside air temperature sensor that measures the outside air temperature as information, and stops the heater when the outside air temperature immediately after the start of the ice making operation is equal to or more than a preset outside air temperature threshold, after which the outside air temperature is preliminarily set in advance. When it becomes less than the set outside air temperature threshold, the heater may be operated.
The measuring means is an ice making water temperature sensor that measures the ice making water temperature of the ice making water, and when the ice making water temperature immediately after the start of the ice making operation is equal to or higher than a preset ice making water temperature threshold, the heater is stopped, Thereafter, when the ice making water temperature becomes lower than a preset ice making water temperature threshold, the heater may be operated.
The measuring means is a condenser temperature sensor that measures the condenser central temperature of the condenser, stops the heater when the ice making operation starts, and then the condenser central temperature becomes less than the preset condenser central temperature threshold. In some cases, the heater may be operated.
The measuring means is an evaporation tube temperature sensor for measuring the evaporation tube outlet temperature of the evaporation tube, stops the heater when the ice making operation starts, and then the evaporation tube outlet temperature becomes less than a preset evaporation tube outlet temperature threshold. In the case of failure, the heater may be operated.
It is equipped with a water supply valve that closes when the float switch detects a high water level and stops supplying water to the water tank, and opens when the float switch detects a low water level to supply water to the water tank. The means is an opening / closing interval measuring means for measuring the opening / closing interval of the water supply valve and an ice making water temperature sensor for measuring the ice making water temperature of the ice making water. The heater is stopped at the start of ice making operation, and then the opening / closing interval of the water supply valve is The heater may be operated when the temperature is not less than a preset opening / closing interval threshold and the temperature of the ice making water is lower than the preset ice making water temperature threshold.
It is equipped with a water supply valve that closes when the float switch detects a high water level and stops supplying water to the water tank, and opens when the float switch detects a low water level to supply water to the water tank. The means is an open / close interval measuring means for measuring the open / close interval of the water supply valve and a condenser temperature sensor for measuring the condenser central temperature of the condenser, and stops the heater when the ice making operation starts, and then the open / close interval of the water supply valve Is less than a preset opening / closing interval threshold value, and the heater may be operated when the condenser center temperature is less than a preset condenser center temperature threshold value.
It is equipped with a water supply valve that closes when the float switch detects a high water level and stops supplying water to the water tank, and opens when the float switch detects a low water level to supply water to the water tank. The means is an open / close interval measuring means for measuring the open / close interval of the water supply valve, and an evaporating pipe temperature sensor for measuring the evaporating pipe outlet temperature of the evaporating pipe, and stops the heater when the ice making operation starts, and then the open / close interval of the water supply valve May be operated when is equal to or greater than a preset opening / closing interval threshold and the evaporator outlet temperature is less than a preset evaporator outlet temperature threshold.
The measuring means is an ice-making water temperature sensor that measures the ice-making water temperature of the ice-making water and a condenser temperature sensor that measures the condenser center temperature of the condenser, and stops the heater when the ice-making operation starts, and then the ice-making water temperature Is less than a preset ice-making water temperature threshold, and the heater may be operated when the condenser center temperature is less than a preset condenser center temperature threshold.
The measuring means is an ice making water temperature sensor for measuring the ice making water temperature and an evaporating pipe temperature sensor for measuring the evaporating pipe outlet temperature of the evaporating pipe. The heater may be operated when the temperature is less than a preset ice-making water temperature threshold and the evaporator tube outlet temperature is less than a preset evaporator tube outlet temperature threshold.
The measuring means is an ice-making water temperature sensor for measuring the condenser central temperature of the condenser and an evaporator-pipe temperature sensor for measuring the outlet temperature of the evaporator pipe. The heater is stopped when the ice-making operation starts, and then the condenser The heater may be activated when the median temperature is less than a preset condenser median temperature threshold and the evaporator tube outlet temperature is less than a preset evaporator tube outlet temperature threshold.
It is equipped with a water supply valve that closes when the float switch detects a high water level and stops supplying water to the water tank, and opens when the float switch detects a low water level to supply water to the water tank. The means is an ice making water temperature sensor for measuring the ice making water temperature, a condenser temperature sensor for measuring the condenser central temperature of the condenser, and an opening / closing interval measuring means for measuring the opening / closing interval of the water supply valve. The heater is stopped with the start, and then the opening / closing interval of the water supply valve is greater than or equal to a preset opening / closing interval threshold, the temperature of the ice making water is less than the preset ice making water temperature threshold, and the condenser central temperature is preset. The heater may be activated if it is below the condenser center temperature threshold.
The measuring means is an ice making water temperature sensor for measuring the ice making water temperature of the ice making water, a condenser temperature sensor for measuring the condenser central temperature of the condenser, and an evaporator tube temperature sensor for measuring the outlet temperature of the evaporator tube. When the ice making operation is started, the heater is stopped, the temperature of the ice making water is equal to or higher than a preset ice making water temperature threshold, the condenser central temperature is lower than the preset condenser central temperature threshold, and the evaporator outlet temperature is The heater may be operated when the temperature is lower than the preset evaporation tube outlet temperature threshold.
It is equipped with a water supply valve that closes when the float switch detects a high water level and stops supplying water to the water tank, and opens when the float switch detects a low water level to supply water to the water tank. Means include an ice making water temperature sensor for measuring the ice making water temperature of the ice making water, a condenser temperature sensor for measuring the condenser central temperature of the condenser, an evaporating pipe temperature sensor for measuring the evaporating pipe outlet temperature, and a water supply valve. An opening / closing interval measuring means for measuring an opening / closing interval, wherein the heater is stopped when the ice making operation is started, and then the opening / closing interval of the water supply valve measured by the opening / closing interval measuring means is equal to or greater than a preset opening / closing interval threshold value and ice making water The evaporating pipe outlet temperature is lower than the preset ice making water temperature threshold, the condenser central temperature is lower than the preset condenser central temperature threshold, and the evaporator outlet temperature is preset. It may operate a heater is less than the outlet temperature threshold value.

  According to the present invention, the compression head is provided with a heater, provided with a measuring means for measuring information related to the ice making operation in the ice making machine, measured by the measuring means after starting the ice making operation by operating the compressor. Since the heater is switched on and off depending on whether the information satisfies a preset condition by comparing the information with a preset condition for the information, there is a possibility that ice clogging may occur in the compression head. An object of the present invention is to provide an ice making machine that reduces and makes high-quality ice.

1 is a schematic view of an auger type ice making machine according to Embodiment 1 of the present invention. It is the schematic of the ice making mechanism part of the auger type ice making machine which concerns on Embodiment 1 of this invention. It is the schematic of the auger type ice making machine which concerns on Embodiment 2 of this invention. It is the schematic of the auger type ice making machine which concerns on Embodiment 3 of this invention. It is the schematic of the auger type ice making machine which concerns on Embodiment 4 of this invention. It is the schematic of the auger type ice making machine which concerns on Embodiment 5 of this invention. It is the schematic of the auger type ice making machine which concerns on Embodiment 6 of this invention. It is the schematic of the auger type ice making machine which concerns on Embodiment 7 of this invention.

Embodiment 1 of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 shows an outline of an ice making machine according to an embodiment of the present invention. The auger type ice making machine 1 includes a refrigeration cycle 2, a fan unit 3 and an ice making water flow path 4.

  The refrigeration cycle 2 is configured such that the compressor 20, the dryer 21, the condenser 22, the expansion valve 23, and the evaporation pipe 240 provided in the ice making mechanism unit 24 are sequentially connected and communicated via the refrigerant pipe 25. .

  The ice making mechanism portion 24 is an ice making mechanism portion of a known auger type ice making machine, and includes a cylinder 241 as a refrigeration casing and an evaporation tube 240 wound around the outer surface of the cylinder 241.

  The fan unit 3 includes fans 30a and 30b, fan motors 31a and 31b for driving the fans 30a and 30b, and fan motor control means 32. The fans 30a and 30b are provided in the vicinity of the condenser 22, and the fans 22a and 30b rotate to blow air to the condenser 22, whereby the condenser 22 is cooled. The rotation shafts of the fans 30a and 30b are connected to fan motors 31a and 31b for driving the fans 30a and 30b, respectively. The fan motors 31a and 31b are connected to the fan motor control means 32, respectively. The fan motor control means 32 includes a microcomputer and a motor drive circuit for controlling the fan motors 31a and 31b, respectively.

The ice making water flow path 4 includes a water supply tank 40, a water supply valve 41, a float switch 42 provided inside the water supply tank 40 and interlocked with the water supply valve 41, a frequency measuring means 43, a water supply pipe 44, a drain pipe 45 and a drain valve 46. include. Inside the water supply tank 40, ice making water used for ice making is stored. The float switch 42 includes a high level float switch 420 and a low level float switch 421. When the water level of the ice making water in the water supply tank 40 is a high water level state that is a predetermined high water level, the water supply valve 41 is closed by the high level float switch 420 detecting the water level of the ice making water. On the contrary, when the ice making water level is a low water level that is a predetermined low water level, the low level float switch 421 detects the water level of the ice making water to open the water supply valve 41. Further, the number measuring means 43 which is a measuring means for measuring the number of times the high level float switch 420 and the low level float switch 421 have measured the water level is connected to the high level float switch 420 and the low level float switch 421. .

The water supply valve 41 is connected to a water pipe (not shown) outside the auger type ice making machine 1. When the water supply valve 41 is opened, ice making water is supplied from the water pipe to the water supply tank 40. The water supply valve 41 can be arbitrarily opened and closed by a water supply valve control means (not shown).

  One end of a water supply pipe 44 is connected to the water supply tank 40. The other end of the water supply pipe 44 opens to the inside of the cylinder 241 of the ice making mechanism 24, and supplies ice making water to the inside of the cylinder 241. In addition, one end of a drain pipe 45 is connected to the cylinder 241. By opening a drain valve 46 provided in the drain pipe 45 by a drain valve control means (not shown), ice making water inside the cylinder 241 is drained through the drain pipe 45. The water levels of the water supply tank 40 and the cylinder 241 are provided to be equal. Further, in order to smoothly drain ice-making water from the cylinder 241, the other end of the drain pipe 45 on the side that is not open to the cylinder 241 is connected to a drain pan (not shown) provided below the cylinder 241. It is placed in a position where the water that passes through it is discharged.

  FIG. 2 is a schematic view of the ice making mechanism 24. An evaporation pipe 240 is wound around the outer peripheral surface of the cylinder 241. The evaporation pipe 240 and the cylinder 241 are surrounded by a cylindrical heat insulator 242. An auger 243 is provided inside the cylinder 241 so as to be coaxial with the longitudinal axis of the cylinder 241 and to be rotatable. The auger 243 is rotated by a geared motor 244. Further, the auger 243 is provided with a spiral blade 245 for ice cutting. A compression head 246 for compressing ice cut by the blade 245 is provided on the upper portion of the cylinder 241. A heater 247 for heating the compression head 246 is provided on the outer periphery of the position of the cylinder 241 corresponding to the axial position where the compression head 246 is provided. The heater 247 is electrically connected to the number measuring means 43 (see FIG. 1). At the upper part of the compression head 246, a cutter 248 for pulverizing the compressed ice is provided. One end of a cylindrical ice discharge portion 249 is connected to the upper portion of the cylinder 241, and the ice discharge portion 249 extends in the horizontal direction so as to include a cutter 248 inside. The other end of the ice discharger 249 is connected to an ice storage tank (not shown).

Next, the operation of the ice making machine according to Embodiment 1 of the present invention will be described.
As shown in FIG. 1, when the auger type ice making machine 1 starts the ice making operation, the water supply valve 41 is opened by the water supply valve control means (not shown), and the drain valve 46 is closed by the water discharge valve control means (not shown). In the state, ice making water is supplied to the water supply tank 40 from an external water pipe (not shown). At this time, since the water level in the cylinder 241 and the water level in the water supply tank 40 are arranged to be equal to each other through the water supply pipe 44, ice-making water is supplied from the water supply tank 40 to the cylinder 241. When the water level of the ice making water in the water supply tank 40 rises and the high level float switch 420 detects the high water level state of the water supply tank 40, the water supply valve 41 is closed. The number-of-times measuring means 43 records the number of times that the high level float switch 420 has detected the high water level state as one time. By closing the water supply valve 41, the water supply is stopped in a state where the ice making water is supplied to the water supply tank 40 to a high water level state.

  At this time, if ice frozen in the previous ice making operation remains in the cylinder 241, the ice remaining in the ice making operation is not discharged, causing ice clogging in the compression head 246. there is a possibility. Therefore, as shown in FIG. 2, the geared motor 244 is driven to operate the heater 247. When the geared motor 244 is driven while the heater 247 is in operation, the ice remaining in the cylinder 241 is scraped to the upper part of the cylinder 241 by the blade 245 of the auger 243 before the ice making operation is started. The scraped ice is discharged from the compression head 246 while the surface of the ice is heated and melted by the heater 247 in the compression head 246. This reduces the possibility that the ice remaining in the cylinder 241 at the compression head 246 will be clogged during the ice making operation. The time for driving the geared motor 244 to scrape out the ice remaining in the cylinder 241 is appropriately set in advance as necessary at the design stage of the auger type ice making machine 1.

  After a preset time has elapsed since the geared motor 244 started driving, the compressor 20 is started to start the auger ice making machine 1 and the heater 247 is stopped. As shown in FIG. 1, when the compressor 20 is operated, the refrigerant circulates through the refrigeration cycle 2 and the ice making operation in the auger type ice making machine 1 is started. First, the refrigerant is sucked and compressed by the compressor 20 to become a high-temperature and high-pressure gas. Next, the refrigerant flows into the dryer 21 and moisture is removed. Next, the refrigerant flows into the condenser 22. The condenser 22 is cooled by blowing air from the fans 30a and 30b. The fans 30a and 30b are driven by fan motors 31a and 31b controlled by fan motor control means 32. The high-temperature and high-pressure gaseous refrigerant that has flowed into the condenser 22 is cooled in the condenser 22 to become a high-pressure liquid refrigerant.

  Next, the refrigerant flows into the expansion valve 23. The refrigerant is expanded by the expansion valve 23, the temperature and pressure are reduced, and the refrigerant becomes a low-temperature / low-pressure liquid refrigerant. Next, the refrigerant flows into the evaporation pipe 240 of the ice making mechanism 24. By exchanging heat with the ice making water inside the cylinder 241 in the evaporation pipe 240, the refrigerant takes the heat of the ice making water and evaporates, and the refrigerant becomes a low-temperature and low-pressure gas. Then, the refrigerant is sucked and compressed into the compressor 20 to become a high-temperature and high-pressure gas.

  The ice making water supplied to the inside of the cylinder 241 is cooled by removing heat from the refrigerant in the evaporation pipe 240 and freezes in layers on the inner surface of the cylinder 241. Then, the ice is scraped into a sherbet shape by the auger 243 rotated by the geared motor 244 and conveyed above the cylinder 241. The conveyed ice is compressed by a compression head 246 and crushed into suitable granular ice by a cutter 248. The crushed ice is discharged to the ice storage tank through the ice discharge unit 249.

  Immediately after the start of the ice making operation, the temperature of the cylinder 241 and the like is not stable, so that the ice making capacity in the ice making mechanism 24 is lowered and the amount of ice produced is small. In the first embodiment, since the heater 247 is stopped after the start of the ice making operation, the ice hardly melts in the compression head 246 as compared with the case where the heater 247 is operated. Therefore, even when the amount of ice made for a while after the start of the ice making operation is small, good quality ice having sufficient hardness is easily generated by the compression head 246.

  Further, when the ice making capability is low after the start of the ice making operation and the amount of ice to be made is small, there is little possibility of ice clogging in the compression head 246, and there is no need to heat the compression head 246 by the heater 247. Therefore, the power consumption of the auger type ice making machine 1 can be reduced by stopping the heater 247.

  When the ice making water in the cylinder 241 freezes and the ice is transported and discharged by the auger 243, the ice making water corresponding to the ice in the cylinder 241 decreases. When the ice making water in the cylinder 241 decreases, the ice making water is supplied from the water supply tank 40, so the water level of the water supply tank 40 decreases. When the water level of the water supply tank 40 is lowered to the low water level position where the low level float switch 421 is provided, the low level float switch 421 detects that the ice making water is in the low water level state.

When the low level float switch 421 detects the low water level state, the number measuring means 43 records the number of times the low level float switch 421 detects the low water level state as one time. If the frequency measuring means 43 records that the number of times the high level float switch 420 has detected a high water level and the number of times the low level float switch 421 has detected a low water level is one, then the auger type ice making machine 1 This means that the ice making operation was performed until the water level of the ice making water in the water supply tank 40 changed from the high water level state to the low water level state after the start of the ice making operation.

At this time, since the time from immediately after the start of the ice making operation until the water level of the ice making water in the water supply tank 40 changes from the high water level state to the low water level state, the state of the cylinder 241 is stable. Therefore, the ice making capacity in the cylinder 241 becomes higher than immediately after the start of the ice making operation. Therefore, by operating the heater 247, the ice scraped out by the compression head 246 is heated to melt the ice surface in the compression head 246, so that the ice in the compression head 246 is easily released during the ice making operation. The chance of ice clogging is reduced. In addition, the number of times that the high level float switch 420 has detected the high water level state and the number of times that the low level float switch 421 has detected the low water level state are one each, a preset condition for operating the heater 247 It is.

Further, when the low level float switch 421 detects a low water level state, the water supply valve 41 is opened. When the water supply valve 41 is opened, ice making water is supplied from the water pipe to the water supply tank 40. When the water level of the water supply tank 40 becomes a high water level state due to the water supply, the water supply valve 41 is closed and the water supply to the water supply tank is stopped. Thereafter, the float switch 42 detects whether the ice making water level in the water supply tank 40 is high or low, and the water supply valve 41 is opened and closed to open the ice making water in the water supply tank 40. Since water is supplied, ice making water is continuously supplied into the cylinder 241 and ice making is continuously performed.

Thus, before operating the compressor 20 and starting the ice making operation, the level of the ice making water in the water supply tank in the state where the geared motor 244 is driven and the heater 247 is operated and then the heater 247 is stopped. The ice making operation is performed until the water level changes from the high water level to the low water level, and the heater 247 is activated when the low level float switch 421 detects the low water level. The possibility of the occurrence of ice clogging can be reduced and high quality ice can be made.

Embodiment 2. FIG.
Next, an ice making machine according to Embodiment 2 of the present invention will be described. In the following embodiments, the same reference numerals as those in FIGS. 1 to 2 are the same or similar components, and thus detailed description thereof is omitted. In the ice making machine according to the second embodiment, the operation time from the start of the operation of the compressor 20 is changed from that of the first embodiment so as to be measured as a condition for operating and stopping the heater 247.

  FIG. 3 shows an auger type ice making machine 1 according to the second embodiment. The compressor 20 is provided with compressor measuring means 200 that is a timer for measuring the time from the start of operation of the compressor as a measuring device. The compressor measuring means 200 is electrically connected to the heater 247 shown in FIG. Other configurations are the same as those of the first embodiment.

Next, the operation of the ice making machine according to Embodiment 2 of the present invention will be described.
The operation from the start of operation of the geared motor 244 until the compressor 20 starts operating and the heater 247 stops after a certain time has elapsed is the same as that of the first embodiment. When the compressor 20 is operated, the refrigerant circulates in the refrigeration cycle 2 and the ice making operation in the auger type ice making machine 1 is started.

  At this time, the compressor measuring means 200 starts measuring the operation time from the start of operation of the compressor 20. After that, during the ice making operation, the heater 247 is operated when the operation time measured by the compressor measuring means 200 becomes equal to or more than the operation time threshold as a preset condition for the operation of the heater 247. Here, the operation time threshold is a time required for the state of the refrigeration cycle 2 and the cylinder 241 to be stabilized and the ice making capability of the ice making mechanism unit 24 to be improved as the operation time from the start of operation of the compressor 20 elapses. It is arbitrarily set according to the outside temperature of the auger type ice making machine 1, the temperature of the ice making water, and the like.

Immediately after the start of the ice making operation, the heater 247 is stopped, so that the compression head 246 easily generates good quality ice immediately after the start of the ice making operation. By operating the heater 247 in such a case, the ice in the compression head 246 is likely to be released when the ice making capacity increases after a lapse of time from the start of the ice making operation, and ice clogging in the compression head 246 is prevented. The possibility of occurrence is reduced.

  Thus, the compressor measuring means 200 is a timer for measuring the operation time of the compressor 20, and operates the heater 247 when the operation time of the compressor 20 is equal to or greater than a preset operation time threshold. As in the first embodiment, it is possible to reduce the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 and to make good quality ice.

Embodiment 3 FIG.
Next, an ice making machine according to Embodiment 3 of the present invention will be described. In the ice making machine according to the third embodiment, the interval between the float switch 42 being in the high water level state and the low water level state is measured as a condition for operating and stopping the heater 247 with respect to the first embodiment. Is.

FIG. 4 shows an auger type ice making machine 1 according to the third embodiment. An opening / closing interval measuring means 47, which is a measuring means for measuring the opening / closing interval of the water supply valve 41, is connected to the water supply valve 41. The opening / closing interval measuring means 47 is electrically connected to the heater 247 shown in FIG. Other configurations are the same as those of the first embodiment.

Next, the operation of the ice making machine according to Embodiment 3 of the present invention will be described.
The operation from the start of operation of the geared motor 244 until the compressor 20 starts operating and the heater 247 stops after a certain time has elapsed is the same as that of the first embodiment. When the compressor 20 is operated, the refrigerant circulates in the refrigeration cycle 2 and the ice making operation in the auger type ice making machine 1 is started.

  As described above, when the high level float switch 420 detects the high water level of the water supply tank 40 during the ice making operation of the auger type ice making machine 1, the water supply valve 41 is closed and the low level float switch 421 is set to the low level of the water supply tank 40. When the water level is detected, the water supply valve 41 is closed. The higher the ice making capacity in the ice making mechanism 24, the more ice making water freezes per predetermined time, and the ice making water level in the cylinder 241 and the water supply tank 40 decreases in a shorter time. As a result, the open / close interval of the water supply valve 41 is shortened in order to supply ice-making water into the water supply tank 40. For this reason, the ice making capacity in the ice making mechanism 24 corresponds to the opening / closing interval of the water supply valve 41.

  Further, in order to prevent ice clogging from occurring in the compression head 246, it is necessary to operate the heater 247 when the ice making capability in the ice making mechanism 24 is higher than a certain level. Therefore, the ice making capacity when the heater 247 needs to be operated is obtained in advance at the design stage. Then, an opening / closing interval threshold value of the water supply valve 41 as a preset condition corresponding to the ice making capacity when the heater 247 needs to be operated is set and recorded in the opening / closing interval measuring means 47.

  When the ice making operation is started, immediately after the ice making operation is started, the open / close interval of the water supply valve 41 during the ice making operation is still unknown, so the low level float switch 421 measures the low water level state of the water supply tank 40. The ice making operation is performed with the heater 247 stopped until the water supply valve 41 is opened. Thereafter, during the ice making operation, when the opening / closing interval measuring unit 47 determines that the opening / closing interval of the water supply valve 41 measured by the opening / closing interval measuring unit 47 is less than the opening / closing interval threshold, the heater 247 is operated. Further, when the opening / closing interval measuring unit 47 determines that the opening / closing interval of the water supply valve 41 measured by the opening / closing interval measuring unit 47 is equal to or greater than the opening / closing interval threshold, the heater 247 is stopped. Thereby, according to the ice making capability of the ice making mechanism part 24, operation | movement and a stop of the heater 247 can be switched.

  Thus, when the opening / closing interval of the water supply valve 41 measured by the opening / closing interval measuring means 47 is less than the preset opening / closing interval threshold, the heater 247 is operated, and then the water supply valve measured by the opening / closing interval measuring means 47 is measured. Since the heater 247 is stopped when the opening / closing interval 41 is equal to or greater than a preset opening / closing interval threshold, the ice is generated in the compression head 246 according to the ice making capability of the ice making mechanism 24 during the ice making operation of the auger type ice making machine 1. The possibility of clogging can be reduced and good quality ice can be made.

Embodiment 4 FIG.
Next, an ice making machine according to Embodiment 4 of the present invention will be described. In the ice making machine according to the fourth embodiment, the outside air temperature is changed to be measured as a condition for operating and stopping the heater 247 with respect to the first embodiment.

FIG. 5 shows an auger type ice making machine 1 according to the fourth embodiment. The auger type ice making machine 1 is provided with an outside air temperature sensor 5 which is a measuring means for measuring the outside air temperature of the auger type ice making machine 1. The outside air temperature sensor 5 may be provided in a place where outside air can be introduced in the housing of the auger type ice making machine 1. The outside air temperature sensor 5 is electrically connected to a heater 247 shown in FIG. 2 via a heater control device (not shown). Other configurations are the same as those of the first embodiment.

Next, the operation of the ice making machine according to Embodiment 4 of the present invention will be described.
The operation until the geared motor 244 starts operation and the heater 247 is activated is the same as that in the first embodiment. After a certain period of time has elapsed since the geared motor 244 started operation, the compressor 20 operates, whereby the refrigerant circulates through the refrigeration cycle 2 and the ice making operation in the auger type ice making machine 1 is started.

  In general, the ice making capacity of the ice making mechanism 24 decreases as the outside air temperature of the auger type ice making machine 1 increases. Therefore, in order to make it easy to generate good quality ice having sufficient hardness in the compression head 246, the outside air temperature corresponding to the ice making capacity when the heater 247 needs to be stopped is set as the outside air temperature threshold, and the ice making is performed. It is obtained at the design stage based on the relationship between the ice making capability in the mechanism 24 and the outside air temperature.

  Immediately after the start of the ice making operation, the outside air temperature sensor 5 measures the outside air temperature of the auger type ice making machine 1. When the outside air temperature immediately after the start of the ice making operation measured by the outside air temperature sensor 5 is equal to or more than the outside air temperature threshold that is a preset condition for switching between the operation and stop of the heater 247, the heater control device performs the heater 247. To stop.

  When the heater 247 is stopped, immediately after the start of the ice making operation, ice is generated in the compression head 246 even if the ice making mechanism 24 is unstable and the outside air temperature is high and the ice making capability in the ice making mechanism 24 is reduced. Since a stable ice shape is formed quickly without being heated, good quality ice with sufficient hardness is easily generated in the compression head 246.

  After that, when the outside air temperature becomes less than the preset outside air temperature threshold, the ice making capability in the ice making mechanism 24 is improved, so the heater control device operates the heater 247. Further, even when the outside air temperature immediately after the start of the ice making operation is less than the preset outside air temperature threshold, the ice making mechanism 24 has a high ice making capacity, so the heater control device keeps the heater 247 in operation. Thereafter, the ice making operation continues with the heater 247 operating.

  As described above, the outside air temperature sensor 5 for measuring the outside air temperature is provided, and the heater 247 is stopped when the outside air temperature immediately after the start of the ice making operation is equal to or higher than the preset outside air temperature threshold, and the outside air temperature is preset. By driving the heater 247 when the temperature is lower than the outside air temperature threshold, a stable ice shape is quickly formed even when the outside air temperature is high and the ice making capacity in the ice making mechanism 24 is lowered. Ice can be made.

Embodiment 5. FIG.
Next, an ice making machine according to Embodiment 5 of the present invention will be described. In the ice making machine according to the fifth embodiment, the ice making water temperature of the ice making water is changed as a condition for operating and stopping the heater 247 with respect to the first embodiment.

FIG. 6 shows an auger type ice making machine 1 according to the fifth embodiment. In the water supply tank 40, an ice making water temperature sensor 48, which is a measuring means for measuring the ice making water temperature, which is the temperature of the ice making water, is provided. The ice making water temperature sensor 48 is electrically connected to the heater 247 shown in FIG. 2 via a heater control device (not shown). Other configurations are the same as those of the first embodiment.

Next, the operation of the ice making machine according to Embodiment 5 of the present invention will be described.
The operation until the geared motor 244 starts operation and the heater 247 is activated is the same as that in the first embodiment. After a certain period of time has elapsed since the geared motor 244 started operation, the compressor 20 operates, whereby the refrigerant circulates through the refrigeration cycle 2 and the ice making operation in the auger type ice making machine 1 is started.

  In general, the ice making capacity in the ice making mechanism section 24 decreases as the ice making water temperature in the water supply tank 40 increases. Therefore, in order to make it easy to generate good quality ice having sufficient hardness in the compression head 246, the ice making water temperature corresponding to the ice making capacity when the heater 247 needs to be stopped is set as the ice making water temperature threshold. Then, it is obtained at the design stage based on the relationship between the ice making capacity of the ice making mechanism 24 and the ice making water temperature.

  Immediately after the start of the ice making operation, the ice making water temperature sensor 48 measures the ice making water temperature in the water supply tank 40. When the ice making water temperature immediately after the start of the ice making operation measured by the ice making water temperature sensor 48 is equal to or higher than the ice making water temperature threshold which is a preset condition for switching between the operation and stop of the heater 247, the heater control device Stops the heater 247.

  When the heater 247 is stopped, the ice is heated in the compression head 246 even when the ice making mechanism 24 is unstable and the ice making water temperature is high and the ice making capacity in the ice making mechanism 24 is lowered after the ice making operation is started. However, since a stable ice shape is formed quickly, good quality ice having sufficient hardness is easily generated in the compression head 246.

  Thereafter, when the ice making water temperature becomes lower than the ice making water temperature threshold, the ice making capability in the ice making mechanism 24 is improved, and the heater control device operates the heater 247. Further, even when the ice making water temperature immediately after the start of the ice making operation is less than the ice making water temperature threshold, the ice making mechanism 24 has high ice making capability, so the heater control device keeps the heater 247 in operation. Thereafter, the ice making operation continues with the heater 247 operating.

  As described above, the ice making water temperature sensor 48 for measuring the ice making water temperature is provided, and when the ice making water temperature is equal to or higher than the preset ice making water temperature threshold, the heater 247 is stopped and the ice making water temperature is set in advance. When the temperature falls below the water temperature threshold, the heater 247 is driven, so that a stable ice shape is quickly formed even when the outside air temperature is high and the ice making capacity of the ice making mechanism 24 is low. Ice can be made.

Embodiment 6 FIG.
Next, an ice making machine according to Embodiment 6 of the present invention will be described. In the ice making machine according to the sixth embodiment, the condenser central temperature of the condenser 22 is changed to be measured as a condition for operating and stopping the heater 247 with respect to the first embodiment.

FIG. 7 shows an auger type ice making machine 1 according to the sixth embodiment. The condenser 22 is provided with a condenser temperature sensor 220 that is a measuring means for measuring the condenser center temperature, which is the temperature at the center of the condenser 22. The condenser temperature sensor 220 is provided in a U-bend of a copper pipe through which the refrigerant of the condenser 22 passes, and is electrically connected to a heater 247 shown in FIG. 2 via a heater control device (not shown). Other configurations are the same as those of the first embodiment.

Next, the operation of the ice making machine according to Embodiment 6 of the present invention will be described.
The operation until the geared motor 244 starts operation and the heater 247 is activated is the same as that in the first embodiment. After a certain period of time has elapsed since the geared motor 244 started operation, the compressor 20 operates, whereby the refrigerant circulates through the refrigeration cycle 2 and the ice making operation in the auger type ice making machine 1 is started.

  In general, the higher the condenser central temperature, the lower the ice making capacity in the ice making mechanism 24. Therefore, in order to make it easy to generate good quality ice having sufficient hardness in the compression head 246, the condenser central temperature corresponding to the ice making capacity when the heater 247 needs to be stopped is determined. The threshold value is obtained in the design stage based on the relationship between the ice making capability in the ice making mechanism 24 and the condenser center temperature.

  Immediately after the start of the ice making operation, the temperature of the condenser 22 is high and the ice making capacity in the ice making mechanism 24 is low. Therefore, the heater 247 is stopped when the ice making operation is started. The condenser temperature sensor 220 measures the condenser center temperature. When the condenser center temperature measured by the condenser temperature sensor 220 is less than the condenser center temperature threshold, which is a preset condition for switching between operation and stop of the heater 247, the heater control device controls the heater 247. Leave it stopped.

If the heater 247 is kept stopped, the ice making mechanism 24 after the ice making operation is started in an unstable state, the condenser central temperature is high, and the ice making ability in the ice making mechanism 24 is reduced. Since ice is not heated in the compression head 246 and a stable ice shape is formed quickly, good quality ice having sufficient hardness is easily generated in the compression head 246.

  Thereafter, when the condenser center temperature becomes lower than the preset condenser center temperature threshold, the ice making capability is improved, and the heater control device operates the heater 247. Thereafter, the ice making operation continues with the heater 247 operating.

  In this way, the condenser temperature sensor 220 for measuring the condenser center temperature is provided, the heater 247 is stopped when the ice making operation is started, and when the condenser center temperature is equal to or higher than the preset condenser center temperature threshold, the heater 247 is provided. When the condenser central temperature becomes lower than the condenser central temperature threshold, the heater 247 is driven, so that even when the condenser central temperature is high and the ice making capability in the ice making mechanism section 24 is reduced. Since a stable ice shape is formed quickly, good quality ice can be made.

Embodiment 7 FIG.
Next, an ice making machine according to Embodiment 7 of the present invention will be described. In the ice making machine according to the seventh embodiment, the evaporator outlet temperature of the evaporator tube 240 is changed to be measured as a condition for operating and stopping the heater 247 with respect to the first embodiment.

FIG. 8 shows an auger type ice making machine 1 according to the seventh embodiment. An evaporation tube temperature sensor 26 as a measuring means for measuring the evaporation tube outlet temperature is provided. The evaporation pipe temperature sensor 26 is provided at the outlet of the evaporation pipe 240 and is electrically connected to the heater 247 shown in FIG. 2 via a heater control device (not shown). Other configurations are the same as those of the first embodiment.

Next, the operation of the ice making machine according to Embodiment 7 of the present invention will be described.
The operation until the geared motor 244 starts operation and the heater 247 is activated is the same as that in the first embodiment. After a certain period of time has elapsed since the geared motor 244 started operation, the compressor 20 operates, whereby the refrigerant circulates through the refrigeration cycle 2 and the ice making operation in the auger type ice making machine 1 is started.

  Generally, the higher the evaporator outlet temperature, the lower the ice making capacity in the ice making mechanism 24. Therefore, in order to make it easy to produce good quality ice having sufficient hardness in the compression head 246, the evaporator outlet temperature corresponding to the ice making capacity when the heater 247 needs to be stopped is set as the evaporator outlet temperature. The threshold value is obtained at the design stage based on the relationship between the ice making capability in the ice making mechanism 24 and the evaporator outlet temperature.

  Immediately after the start of the ice making operation, the evaporator outlet temperature is high and the ice making capacity in the ice making mechanism 24 is low. Therefore, the heater 247 is stopped when the ice making operation is started. Then, the evaporator tube temperature sensor 26 measures the evaporator tube outlet temperature. When the evaporator tube outlet temperature measured by the evaporator tube temperature sensor 26 is equal to or higher than a preset evaporator tube outlet temperature threshold, which is a preset condition for switching between operation and stop of the heater 247, the heater control device Keeps heater 247 stopped.

  If the heater 247 is left stopped, the ice making mechanism 24 is in an unstable state immediately after the start of the ice making operation, and even if the evaporating tube outlet temperature is high and the ice making capability in the ice making mechanism 24 is lowered, the compression is performed. Since ice is not heated in the head 246 and a stable ice shape is quickly formed, good quality ice having sufficient hardness is easily generated in the compression head 246.

  Thereafter, when the evaporating tube outlet temperature becomes lower than the preset evaporating tube outlet temperature threshold, the ice making capability is improved, and the heater control device operates the heater 247. Thereafter, the ice making operation continues with the heater 247 operating.

  In this way, the evaporator tube temperature sensor 26 for measuring the evaporator tube outlet temperature is provided, the heater 247 is stopped at the start of the ice making operation, and when the evaporator tube outlet temperature is equal to or higher than the preset evaporator tube outlet temperature threshold value, the heater 247 is provided. Is stopped and the heater outlet 247 is driven when the evaporator outlet temperature is lower than the preset evaporator outlet temperature threshold, so that the evaporator outlet temperature is high and the ice making capacity of the ice making mechanism 24 is reduced. Even if it is, a stable ice shape is formed quickly, so that high quality ice can be made.

  The conditions for operating and stopping the heater 247 in Embodiments 3 to 7 can be used in appropriate combination.

  For example, the opening / closing interval of the water supply valve 41 measured by the opening / closing interval measuring means 47 and the ice making water temperature measured by the ice making water temperature sensor 48 may be used as conditions for operating the heater 247. Specifically, the heater 247 is stopped simultaneously with the start of the ice making operation, and then the opening / closing interval of the water supply valve 41 is equal to or greater than a preset opening / closing interval threshold value and the ice making water temperature is less than the preset ice making water temperature threshold value. If the heater 247 is activated, the heater 247 is operated. Thus, the ice making capacity in the ice making mechanism 24 is measured based on both the opening / closing interval of the water supply valve 41 and the ice making water temperature. When the ice making capacity is low after the start of the ice making operation, the heater 247 is stopped, and then the ice making capacity is reached. Since the heater 247 is operated when the temperature is improved, the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and high quality ice can be made.

  Further, for example, the measurement interval of the water supply valve 41 measured by the opening / closing interval measuring means 47 and the condenser center temperature measured by the condenser temperature sensor 220 may be used as conditions for operating the heater 247. Specifically, the heater 247 is stopped simultaneously with the start of the ice making operation, and then the opening / closing interval of the water supply valve 41 becomes equal to or greater than a preset opening / closing interval threshold value and the condenser central temperature is less than the preset condenser central temperature threshold value. When the temperature becomes, the heater 247 is operated. As a result, the ice making capacity in the ice making mechanism 24 is measured based on both the opening / closing interval of the water supply valve 41 and the condenser center temperature, and the heater 247 is stopped when the ice making capacity is low after the ice making operation is started. Since the heater 247 is operated when the capacity is improved, the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and high quality ice can be made.

  Further, for example, the measurement interval of the water supply valve 41 measured by the opening / closing interval measuring means 47 and the evaporation pipe outlet temperature measured by the evaporation pipe temperature sensor 26 may be used as conditions for operating the heater 247. Specifically, the heater 247 is stopped at the same time as the ice making operation is started, and then the opening / closing interval of the water supply valve 41 becomes equal to or greater than a preset opening / closing interval threshold value and the evaporation tube temperature becomes less than the preset evaporation tube temperature threshold value. If the heater 247 is activated, the heater 247 is operated. As a result, the ice making capacity in the ice making mechanism 24 is measured based on both the opening / closing interval of the water supply valve 41 and the outlet temperature of the evaporator tube, and the heater 247 is stopped when the ice making capacity is low after the ice making operation is started. Since the heater 247 is operated when the temperature is improved, the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and high quality ice can be made.

  Further, for example, the ice making water temperature measured by the ice making water temperature sensor 48 and the condenser center temperature measured by the condenser temperature sensor 220 may be used as conditions for operating the heater 247. Specifically, the heater 247 is stopped simultaneously with the start of the ice making operation, and then the ice making water temperature becomes lower than the preset ice making water temperature threshold and the condenser central temperature becomes lower than the preset condenser central temperature threshold. If the heater 247 is activated, the heater 247 is operated. Thus, the ice making capacity in the ice making mechanism 24 is measured based on both the ice making water temperature and the condenser center temperature, and the heater 247 is stopped when the ice making capacity is low immediately after the start of the ice making operation. Since the heater 247 is operated when improved, the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and high quality ice can be made.

  Further, for example, the ice making water temperature measured by the ice making water temperature sensor 48 and the evaporating pipe outlet temperature measured by the evaporating pipe temperature sensor 26 may be used as conditions for operating the heater 247. Specifically, the heater 247 is stopped at the same time as the ice making operation is started, and then the ice making water temperature becomes lower than a preset ice making water temperature threshold and the evaporation pipe outlet temperature becomes lower than the preset evaporation pipe outlet temperature threshold. In this case, the heater 247 is operated. As a result, the ice making capability in the ice making mechanism 24 is measured based on both the ice making water temperature and the evaporator tube outlet temperature, and the heater 247 is stopped when the ice making capability is low immediately after the start of the ice making operation. Since the heater 247 is operated when improved, the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and high quality ice can be made.

  Further, for example, the condenser center temperature measured by the condenser temperature sensor 220 and the evaporator outlet temperature measured by the evaporator temperature sensor 26 may be used as conditions for operating the heater 247. Specifically, the heater 247 is stopped simultaneously with the start of the ice making operation, and then the condenser center temperature becomes less than the preset condenser center temperature threshold and the evaporator tube outlet temperature becomes less than the preset evaporator tube outlet temperature threshold. When this happens, the heater 247 is operated. As a result, the ice making capacity in the ice making mechanism 24 is measured based on both the condenser center temperature and the evaporator outlet temperature, and the heater 247 is stopped when the ice making capacity is low immediately after the start of the ice making operation. Since the heater 247 is operated when the temperature is improved, the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and high quality ice can be made.

  Further, for example, the measurement interval of the water supply valve 41 measured by the opening / closing interval measuring means 47, the ice-making water temperature measured by the ice-making water temperature sensor 48, and the evaporation pipe outlet temperature measured by the evaporation pipe temperature sensor 26 are used to operate the heater 247. It may be used as a condition for Specifically, the heater 247 is stopped simultaneously with the start of the ice making operation, and then the opening / closing interval of the water supply valve 41 is equal to or greater than a preset opening / closing interval threshold value, and the ice making water temperature is less than the preset ice making water temperature threshold value. At the same time, the heater 247 is operated when the evaporator tube temperature becomes lower than a preset evaporator tube temperature threshold. Thereby, the ice making capacity in the ice making mechanism 24 is measured based on the opening / closing interval of the water supply valve 41, the ice making water temperature, and the evaporation pipe outlet temperature, and when the ice making capacity after the start of the ice making operation is low, the heater 247 is stopped, Thereafter, when the ice making capacity is improved, the heater 247 is operated, so that the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and high quality ice can be made. it can.

  Further, for example, the ice making water temperature measured by the ice making water temperature sensor 48, the condenser central temperature measured by the condenser temperature sensor 220, and the evaporator outlet temperature measured by the evaporator temperature sensor 26 are used for operating the heater 247. You may use as conditions of. Specifically, the heater 247 is stopped when the ice making operation is started, and then the ice making water temperature is lower than a preset ice making water temperature threshold and the condenser central temperature is lower than the preset condenser central temperature threshold. At the same time, the heater 247 is operated when the evaporator tube temperature becomes lower than a preset evaporator tube temperature threshold. Accordingly, the ice making capacity in the ice making mechanism 24 is measured based on the ice making water temperature, the condenser center temperature, and the outlet temperature of the evaporator tube. When the ice making capacity is low immediately after the start of the ice making operation, the heater 247 is stopped, Since the heater 247 is operated when the ice making capability is improved, the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and high quality ice can be made. .

  Further, for example, the measurement interval of the water supply valve 41 measured by the opening / closing interval measuring means 47, the ice making water temperature measured by the ice making water temperature sensor 48, the condenser center temperature and the evaporation pipe temperature sensor measured by the condenser temperature sensor 220 The evaporator tube outlet temperature measured at 26 may be used as a condition for operating the heater 247. Specifically, the heater 247 is stopped simultaneously with the start of the ice making operation, and then the opening / closing interval of the water supply valve 41 is equal to or greater than a preset opening / closing interval threshold value, and the ice making water temperature is less than the preset ice making water temperature threshold value. The heater 247 is operated when the condenser center temperature is less than the preset condenser center temperature threshold and the evaporator tube temperature is less than the preset evaporator temperature threshold. As a result, the ice making capability in the ice making mechanism 24 is measured based on the opening / closing interval of the water supply valve 41, the ice making water temperature, the condenser center temperature, and the evaporator outlet temperature, and the ice making capability immediately after the start of the ice making operation is low. Since the heater 247 is stopped and then the heater 247 is operated when the ice making capability is improved, the possibility of ice clogging in the compression head 246 during the ice making operation of the auger type ice making machine 1 can be reduced and the quality can be improved. Ice can be made.

  1 auger type ice making machine (ice making machine), 5 outside air temperature sensor, 20 compressor, 22 condenser, 26 evaporating pipe temperature sensor (measuring means), 40 water supply tank, 41 water supply valve, 42 float switch, 43 times measuring means ( Measuring means), 47 open / close interval measuring means (measuring means), 48 ice making water temperature sensor (measuring means), 200 compressor measuring means (measuring means), 220 condenser temperature sensor (measuring means), 240 evaporating pipe, 241 cylinder 243 auger, 244 geared motor, 246 compression head, 247 heater, 420 high level float switch, 421 low level float switch.

Claims (17)

A compressor for compressing the refrigerant;
A condenser for condensing the refrigerant compressed by the compressor;
An expansion valve for expanding the refrigerant condensed in the condenser;
An evaporation pipe through which the refrigerant expanded by the expansion valve flows;
A cylinder in which the ice making water freezes in the interior by heat exchange between the refrigerant flowing through the evaporation pipe and the ice making water; and
A geared motor for rotating an auger provided in the cylinder;
A water supply tank for storing the ice making water supplied to the inside of the cylinder;
A compression head that compresses the ice produced inside the cylinder after shaving the ice with the auger;
A heater for heating the compression head;
An ice making machine provided in the water supply tank and provided with a float switch that detects a high water level state in which the water level of the ice making water in the water supply tank is a predetermined high water level and a low water level state in which the water level is a predetermined low water level Because
Measuring means for measuring information related to the ice making capacity of the ice making machine;
Before operating the compressor and starting the ice making operation, drive the geared motor and operate the heater, and then start the ice making operation after a preset time,
After the start of the ice making operation, the information measured by the measuring means is compared with a preset condition for the information, and based on whether the information satisfies the preset condition, An ice making machine characterized in that the heater is switched between on and off. The measuring means measures, as the information, that the water level in the water supply tank is lowered and the low water level state is detected by the ice making operation after the float switch detects the high water level state,
Before the start of the ice making operation, the ice making water is supplied to the water tank until the high water level state is reached, the float switch detects the high water level state, and then the heater is stopped together with the start of the ice making operation. 2. The ice making machine according to claim 1, wherein after the ice making operation is started, the heater is operated when a water level in the water supply tank is lowered and the low water level state is detected by the ice making operation. The measuring means is a timer for measuring the operation time of the compressor as the information,
2. The ice making machine according to claim 1, wherein the heater is stopped when the ice making operation is started, and the heater is operated when an operation time of the compressor is equal to or more than a preset operation time threshold. When the float switch detects the high water level state, it closes to stop water supply to the water supply tank, and when the float switch detects the low water level state, it opens to supply water to the water supply tank. With a water supply valve,
The measuring means is an open / close interval measuring means for measuring an open / close interval of the water supply valve,
The heater is stopped when the ice making operation is started, and then the heater is operated when the opening / closing interval of the water supply valve is less than a preset opening / closing interval threshold, and then the opening / closing interval of the water supply valve is set in advance. The ice making machine according to claim 1, wherein the heater is stopped when the opening / closing interval threshold value is exceeded. The measuring means is an outside air temperature sensor that measures outside air temperature as the information,
When the outside air temperature immediately after the start of the ice making operation is equal to or higher than a preset outside air temperature threshold, the heater is stopped, and then the outside air temperature becomes less than the preset outside air temperature threshold, The ice maker according to claim 1, wherein the heater is operated. The measuring means is an ice making water temperature sensor for measuring an ice making water temperature of the ice making water,
When the ice making water temperature immediately after the start of the ice making operation is equal to or higher than a preset ice making water temperature threshold, the heater is stopped, and then the ice making water temperature is lower than the preset ice making water temperature threshold. The ice maker according to claim 1, wherein the heater is operated when it becomes. The measuring means is a condenser temperature sensor for measuring a condenser central temperature of the condenser;
2. The heater according to claim 1, wherein when the ice making operation is started, the heater is stopped, and then the heater is operated when the condenser center temperature becomes lower than a preset condenser center temperature threshold. Ice machine. The measuring means is an evaporation tube temperature sensor for measuring an evaporation tube outlet temperature of the evaporation tube,
The heater is stopped when the ice making operation is started, and then the heater is operated when the evaporation tube outlet temperature becomes lower than a preset evaporation tube outlet temperature threshold value. Ice machine. When the float switch detects the high water level state, it closes to stop water supply to the water supply tank, and when the float switch detects the low water level state, it opens to supply water to the water supply tank. With a water supply valve,
The measuring means is an open / close interval measuring means for measuring an open / close interval of the water supply valve and an ice making water temperature sensor for measuring an ice making water temperature of the ice making water,
When the ice making operation is started, the heater is stopped, and then the opening / closing interval of the water supply valve is equal to or greater than a preset opening / closing interval threshold, and the temperature of the ice making water is less than a preset ice making water temperature threshold. The ice maker according to claim 1, wherein the heater is operated. When the float switch detects the high water level state, it closes to stop water supply to the water supply tank, and when the float switch detects the low water level state, it opens to supply water to the water supply tank. With a water supply valve,
The measuring means is an open / close interval measuring means for measuring an open / close interval of the water supply valve and a condenser temperature sensor for measuring a condenser central temperature of the condenser,
The heater is stopped when the ice making operation is started, and then the opening / closing interval of the water supply valve is less than a preset opening / closing interval threshold and the condenser central temperature is less than a preset condenser central temperature threshold The ice maker according to claim 1, wherein the heater is operated. When the float switch detects the high water level state, it closes to stop water supply to the water supply tank, and when the float switch detects the low water level state, it opens to supply water to the water supply tank. With a water supply valve,
The measuring means is an opening / closing interval measuring means for measuring an opening / closing interval of the water supply valve and an evaporation pipe temperature sensor for measuring an evaporation pipe outlet temperature of the evaporation pipe,
When the ice making operation is started and the heater is stopped, and then the opening / closing interval of the water supply valve is equal to or greater than a preset opening / closing interval threshold and the evaporator tube outlet temperature is lower than a preset evaporator tube outlet temperature threshold The ice maker according to claim 1, wherein the heater is operated. The measuring means is an ice making water temperature sensor for measuring an ice making water temperature of the ice making water and a condenser temperature sensor for measuring a condenser central temperature of the condenser,
The heater is stopped when the ice making operation is started, and then the ice making water temperature is lower than the preset ice making water temperature threshold and the condenser central temperature is lower than the preset condenser central temperature threshold. The ice maker according to claim 1, wherein the heater is operated. The measuring means is an ice-making water temperature sensor for measuring an ice-making water temperature of the ice-making water, and an evaporator tube temperature sensor for measuring an evaporator tube outlet temperature of the evaporator tube,
When the heater is stopped at the same time as the ice making operation starts, and then the temperature of the ice making water is less than a preset ice making water temperature threshold and the evaporator tube outlet temperature is less than a preset evaporator tube outlet temperature threshold The ice maker according to claim 1, wherein the heater is operated. The measuring means is an ice-making water temperature sensor for measuring a condenser central temperature of the condenser and an evaporator tube temperature sensor for measuring an evaporator tube outlet temperature of the evaporator tube,
The heater is stopped when the ice making operation starts, and then the condenser center temperature is less than a preset condenser center temperature threshold and the evaporator tube outlet temperature is less than a preset evaporator tube outlet temperature threshold. The ice maker according to claim 1, wherein the heater is operated. When the float switch detects the high water level state, it closes to stop water supply to the water supply tank, and when the float switch detects the low water level state, it opens to supply water to the water supply tank. The water supply valve is provided, and the measuring means measures an ice making water temperature sensor for measuring an ice making water temperature of the ice making water, a condenser temperature sensor for measuring a condenser central temperature of the condenser, and an opening / closing interval of the water supply valve. Open / close interval measuring means,
The heater is stopped at the start of the ice making operation, and then the opening / closing interval of the water supply valve is equal to or greater than a preset opening / closing interval threshold, and the temperature of the ice making water is less than a preset ice making water temperature threshold. The ice making machine according to claim 1, wherein the heater is operated when a condenser center temperature is lower than a preset condenser center temperature threshold. The measuring means includes an ice making water temperature sensor for measuring an ice making water temperature of the ice making water, a condenser temperature sensor for measuring a condenser central temperature of the condenser, and an evaporator tube temperature for measuring an evaporator tube outlet temperature of the evaporator tube. A sensor,
The heater is stopped at the start of the ice making operation, the temperature of the ice making water is equal to or higher than a preset ice making water temperature threshold, the condenser central temperature is less than a preset condenser central temperature threshold, and the evaporation is performed. The ice making machine according to claim 1, wherein the heater is operated when a tube outlet temperature is lower than a preset evaporation tube outlet temperature threshold. When the float switch detects the high water level state, it closes to stop water supply to the water supply tank, and when the float switch detects the low water level state, it opens to supply water to the water supply tank. With a water supply valve,
The measuring means includes an ice making water temperature sensor for measuring an ice making water temperature of the ice making water, a condenser temperature sensor for measuring a condenser central temperature of the condenser, and an evaporator tube temperature for measuring an evaporator tube outlet temperature of the evaporator tube. Opening / closing interval measuring means for measuring an opening / closing interval of the sensor and the water supply valve,
When the ice making operation is started, the heater is stopped, and then the opening / closing interval of the water supply valve measured by the opening / closing interval measuring means is not less than a preset opening / closing interval threshold and the temperature of the ice making water is preset. The heater is activated when the temperature is below a water temperature threshold, the condenser center temperature is below a preset condenser center temperature threshold, and the evaporator outlet temperature is below a preset evaporator outlet temperature threshold. The ice making machine according to claim 1, wherein:

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