JP4076407B2 - Refrigeration apparatus, its cooler, and method for suppressing humidity rise in cold air duct - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a temperature refrigeration apparatus, in particular after use.Suppresses humidity increase in cooler and cool air ductFor technology.
[0002]
[Prior art]
  As an example of this type of temperature refrigeration apparatus, a temperature and temperature distribution vehicle used in a hospital or the like is known, and the overall structure thereof will be described with reference to FIG. 14 (see, for example, Patent Document 1). ). In this case, the inside of a main body 1 comprising a heat insulating box having a wheel 2 on the bottom surface and an open front surface is divided into left and right by an intermediate wall 3, and each is further partitioned by a heat insulating partition wall 4. Two refrigerator compartments 6 are formed in the center, and two pairs of left and right refrigerator compartments 5 and refrigerator compartments 6 are provided as a pair. A tray 7 that can be accommodated across a pair of the warming room 5 and the cold room 6 is provided, and the hot and cold foods are separately placed on the tray 7, and both trays 7 are placed while penetrating the partition wall 4. By accommodating the chambers 5 and 6, the hot food can be stored in the warm room 5 and the cold food can be stored in the cold room 6.
[0003]
  The intermediate wall 3 forms a duct for circulating cold air, and a group of ventilation holes are formed on both the left and right sides. In the machine room 8, a refrigeration apparatus including a compressor, a cooler, and the like and a cooling fan are installed, and the cool air generated in the vicinity of the cooler is blown into the duct by the cooling fan, and the ventilation port A circulating flow is generated in which the air is blown out to the left and right refrigerator compartments 6 through the group and then guided to the cooler from the ceiling side of one of the refrigerator compartments 6 so that the left and right refrigerator compartments 6 are cooled.
  On the other hand, a heating panel 1 a is stretched on the side surface of the warm room 5 opposite to the partition wall 4. The panel 1a is formed with a vent, and on the back side thereof, a cord heater drawn from the warming unit provided in the machine room 8 is wired over the entire surface, and the air heated by the cord heater is provided. Is circulated by a heating fan so that the inside of the warm room 5 is heated by the radiant heat from the panel 1a and the warm air blown out from the vent.
  With the above configuration, the hot food placed on the tray 7 can be stored in a heat-retaining state, and the cold food can be stored in a cold-retaining state.
[0004]
[Patent Document 1]
          Japanese Patent Laid-Open No. 2000-97559 (term 2, FIG. 18)
[0005]
[Problems to be solved by the invention]
  By the way, the power is turned off after the use of the hot and cold distribution vehicle (for example, after the arrangement is completed), but immediately after the power is turned off, the refrigerator compartment 6 is still in a low temperature state compared to the outside air. As the outside air enters the space 9, dew condensation can occur in the refrigerator compartment 6. Moreover, the frost adhering to the cooler starts to melt after a certain period of time. Therefore, if left as it is, there has been a problem that the humidity in the refrigerator compartment 6 is increased due to condensation or frost melting, and mold and the like are easily generated. Of course, it is possible to suppress the increase in humidity in the refrigerator compartment 6 to some extent by wiping off water droplets and frost attached in the refrigerator compartment 6 in advance. Frost is hard to wipe offThere was a problem.
[0006]
  The present invention has been made in view of the above circumstances, and its purpose is that after use.Of cooler and cold air ductIt is in place to suppress the humidity rise.
[0007]
[Means for Solving the Problems]
  In order to achieve the above-described object, a temperature refrigeration apparatus according to the invention of claim 1 is provided.Control of humidity rise in coolers and cool air ductsIn the method, a main body composed of a heat insulating box is formed with a cold storage room and a cold storage room on both sides of the partition wall, and the tray can be accommodated over both chambers through the partition wall. Is kept warm by a heating device, and the refrigerator is a freezerCoolerThe cool air generated inThrough the cold air ductIn a temperature refrigeration apparatus adapted to be kept cold by being circulated,Suppresses humidity rise in cooler and cold air ductIn this method, the warming room and the refrigerating room are communicated, and the heating device is driven on the warming room side, while only the cooling air blowing means is driven while the refrigerating device is stopped on the cold room side. It has the characteristics.
[0008]
  According to a second aspect of the present invention, there is provided a temperature refrigeration apparatus comprising a partition wall in which a plurality of unit partition walls each having a movable member capable of moving up and down are provided in a main body formed of a heat insulating box. The chamber and the refrigerator compartment are insulated from each other, the tray moves between the upper and lower unit partition walls by moving the movable member, and can be accommodated over both chambers, and the refrigerator compartment is kept warm by a heating device. Refrigerator is a freezerCoolerThe cool air generated inThrough the cold air ductIn the refrigerating apparatus that is kept cold by being circulated, the communication means that allows the refrigerating room and the refrigerating room to communicate with each other, and the cooling blower means that drives the heating apparatus while stopping the refrigerating apparatus DriveControl meansIt has the feature in having.
[0009]
  According to a third aspect of the present invention, in the temperature-refrigeration apparatus according to the second aspect, the communication means includes a holding means capable of holding the movable member in a moved state so that a gap is formed between the upper and lower unit partition walls. It is characterized by its construction.
  According to a fourth aspect of the present invention, in the temperature refrigeration apparatus according to the second or third aspect of the present invention, the warming room is kept warm by circulating the warm air generated by the heating apparatus using the heating air blowing means. It is equipped with an air volume adjusting means that can change the air volume of the air blowing means for heating,Control meansIs characterized in that it has a function of driving the air blowing means for heating so that the air blowing amount is larger than that during the normal heat retaining operation.
  The invention of claim 5 is the heating and refrigeration apparatus according to any one of claims 2 to 4, wherein the heating device isControl meansWhen performing the above, it is characterized in that it is driven at a set temperature higher than the set temperature in the normal heat retaining operation.
[0010]
[Action and effect of the invention]
  <Invention of Claims 1 and 2>
  Immediately after the use of the temperature refrigeration apparatus, the temperature in the refrigeration room is lower than the outside air, and humidity can rise due to condensation. Therefore, according to the configuration of the present invention, the warming room and the refrigerating room are made to communicate with each other, and the heating device is driven to keep the warming room warm, while the refrigerating room only drives the cooling air blowing means. Let Then, the air in the vicinity of the portion of the refrigeration room that communicates with the warming room is warmed, and the warmed air passes through the cooler of the refrigeration apparatus, the cold air duct, and the like by the cooling air blowing means and circulates in the cold room. It becomes like this. AndSuppresses humidity rise in coolers and cool air ductsbe able to.
  In this way, the warm room and the cold room are communicated and the heat from the warm room is used.Suppresses humidity increase in cooler and cool air ductBecause it was configuredControl of humidity rise in coolers and cool air ductsCompared to a separate equipment, the temperature and refrigeration equipment avoids an increase in cost, the number of parts, and an increase in equipment size.Control of humidity riseCan have a function. Moreover, has the cooling air blower been driven to circulate the air in the refrigeration room also in the cooler and the cold air duct?WipeAbout coolers that are difficult to scrapeSuppresses humidity increaseTherefore, it is possible to reliably prevent mold and the like from being generated due to being left at high humidity.
[0011]
  <Invention of Claim 3>
  The warming room and the refrigerating room are communicated with each other by holding means that holds the movable member in a state of being moved so that a gap is formed between the upper and lower unit partition walls. Therefore, the communication means can be easily configured by mainly using the existing configuration only by providing the holding means.
[0012]
  <Invention of Claim 4>
  In the structure in which the air heated by the heating device is circulated by being sent into the warming room by the heating air blowing means, for example, when the food is stored and the normal heat retaining operation is performed, the food is dried. In order to prevent this, it is necessary to adjust the air blowing amount of the heating air blowing means so that the air in the warming room is circulated with a light breeze. Therefore, according to this configuration, the air blowing amount of the heating air blowing means is variable,Control meansAt the time of execution, the heating air blowing means is driven so that the amount of air blown is larger than that during the normal heat retaining operation. ThisControl meansAt the time of execution, the air in the warm room can be circulated more quickly to increase the amount of heat transferred to the cold room. That is, more heat is transmitted to the refrigerator compartment side to quickly increase the temperature of the air circulating in the refrigerator compartment side,Necessary to suppress humidity riseTime can be shortened.
[0013]
  <Invention of Claim 5>
  For example, it is necessary to control the amount of heat generated by the heating device so that the temperature in the warming room becomes a set temperature (heat keeping temperature) suitable for keeping food in use when food is stored and normal warming operation is performed. the aboveControl of humidity riseDuring work, it may be higher than the heat retention temperature. So, according to this configuration,Control meansWhen performing the above, the amount of heat generated by the heating device is controlled so that the temperature in the warming chamber becomes higher than the normal temperature maintaining operation. This speeds up the temperature rise in the refrigerator compartment andHumidity It takes to suppress the riseTime can be shortened.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
  <First Embodiment>
  A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a hot and cold distribution vehicle is illustrated, and as shown in FIGS. 1 and 2, a storage chamber main body 10 (hereinafter simply referred to as a main body) having a rectangular box shape as a whole is provided. It is configured as a heat insulating box having a shape in which both front and rear surfaces are opened and a heat insulating material such as urethane foam is filled in the ceiling wall, the bottom wall, and the left and right side walls. A caster 11 is mounted on the bottom surface of the main body 10 so as to be movable, and a machine room 12 is provided on the top surface.
[0015]
  A vertical frame 13 is erected at the center in the width direction of the front and rear openings of the main body 10, and an intermediate wall 14 is provided in the center of the main body 10 in the width direction. It is divided into two rooms on the left and right. Further, in the two left and right chambers, a heat insulating partition wall 15 described later in detail is provided at a position slightly closer to the intermediate wall 14 side than the central portion in the width direction. Thus, two warm storage chambers 16 are formed outside the partition wall 15, and two cold storage chambers 17 each having a slightly narrower opening than the warm storage chamber 16 are formed inside the partition wall 15.
  In other words, two sets of adjacent storage rooms 16 and refrigeration rooms 17 are formed in the left-right direction, and further divided into front and rear to form a total of four sets of storage rooms 16 and refrigeration rooms 17. Yes. Each warm room 16 and refrigerating room 17 is provided with doors 18 and 18 in a double-spread type, and a magnet packing 19 is attached to the periphery of the back surface of each door 18 so that when the door 18 is closed, a magnet is provided. The packing 19 is configured to be in close contact with the front frame of the openings of the chambers 16 and 17.
[0016]
  The intermediate wall 14 is configured by arranging two front and rear ducts 20, 20 for circulating cold air at an interval, and the left and right sides of each duct 20 are divided into a plurality of regions and each has a vent hole. A group 21 is formed. In the machine room 12, a cooler room 22 is defined so as to cover both ducts 20, 20 and the opening of the ceiling surface of one of the refrigerating rooms 17, and a refrigerator 23, a condenser 24, and the like are refrigerated therein. A cooler 25 constituting the apparatus and a cooling fan 26 corresponding to a cooling air blowing means are installed.
[0017]
  On the other hand, a heating panel 27 is stretched on the side surface of the warm room 16 opposite to the partition wall 15. On the back side of the panel 27, as shown in FIG. 3, three ducts 28 are arranged in the front-rear direction, and these ducts 28 communicate with each other on the lower side. An opening 27a communicating with the warming chamber 16 is formed on the lower side of the duct (hereinafter referred to as “central duct 28a”). Further, vent holes 29 are formed in front of two ducts at both ends (hereinafter referred to as “both end ducts 28 b”), divided into a plurality of regions. In addition, a cord heater (not shown) drawn from the warming unit 30 provided in the machine room 12 is wired on the entire back surface of the three ducts 28. The warming unit 30 is provided with a warming fan 31 corresponding to warming air blowing means for sending warm air into the central duct 28a.
[0018]
  Next, the partition wall 15 is formed by stacking a plurality of unit partition walls 33 on a base 32 having heat insulation properties. A pair of support arms project from the left and right sides of the unit partition wall 33, and a pair of left and right tray receivers 34, 34 are provided at the protruding ends of both support arms to form a unit.
  As shown in FIG. 4, the unit partition wall 33 is roughly composed of a case 35, a pair of front and rear partitions 36, and a stopper body 37. The case 35 is formed by extrusion molding of a synthetic resin material or the like, and is formed in a hollow shape having a vertically long cross section with the upper end side sharpened in a mountain shape as shown in FIGS. Has a length comparable to.
[0019]
  Inside the case 35, two horizontal plates are stretched to form an upper accommodation chamber 38 that accommodates the partition body 36 and a lower accommodation chamber 39 that accommodates the stopper body 37. Each bottom wall of the upper storage chamber 38 and the lower storage chamber 39 is formed with a sliding guide groove having the same width over the entire length at the center in the width direction.
  The partition body 36 is also made of a synthetic resin, and is formed in a box shape having a width so as to be slidably fitted in the sliding guide groove of the upper housing chamber 38, and a pair of front and rear is provided at the lower end side of the unit partition wall 33. It comes to be installed. A leaf spring 40 is mounted between the partition body 36 and the ceiling surface of the upper housing chamber 38 of the unit partition wall 33, and the partition body 36 is always pressed and urged downward by the elasticity of the leaf spring 40. The hooking portions provided on the left and right side edges of the upper surface are locked to the groove edges of the sliding guide groove of the upper storage chamber 38 to restrict the downward movement, and the lower end protrudes from the lower surface of the unit partition wall 33 by a certain length. It is held in the state. Note that the protruding length of the lower end of the partition body 36 is a length approximately equal to the interval between the upper and lower unit partition walls 33 when the unit partition walls 33 are arranged in a stacked manner.
[0020]
  A stopper body 37 is mounted in the gap between the front and rear partition bodies 36, 36 so as to be movable up and down. The stopper body 37 is always urged downward by a pair of left and right auxiliary leaf springs 41 mounted between the ceiling surface of the lower housing chamber 39 and protrudes to a position flush with the lower surface of the partition body 36. In addition, it can rise to a position that is flush with the lower surface of the unit partition wall 33 against the elasticity of the auxiliary leaf spring 41. A magnetic metal plate that can be attracted to the magnet packing 19 of the door 18 is stretched on both end faces of the case 35.
[0021]
  The tray 42 is formed in a horizontally long rectangular shape with a synthetic resin or the like, and a boundary portion 42a is provided at a position slightly closer to one side than the central portion of the horizontal width, and the tray 42 is warm in a wide state sandwiching the boundary portion 42a. The food to be provided is placed in a cold state on the narrow side. The tray 42 has a boundary portion 42 a penetrating the partition wall 15, and a pair of tray receivers 34, 34 provided on the panel 27 side of the warming chamber 16 and the duct 20 side of the refrigerating chamber 17 at the lower surfaces of both ends thereof. It is pushed in while being received and is accommodated from both front and rear. That is, the warm and cold distribution vehicle according to the present embodiment is a so-called pass-through type that has the convenience that the tray 42 can be sequentially accommodated from only the front side of the main body 10 to the rear region and then the front region. Has become.
[0022]
  Now, a configuration corresponding to the communication means of the present invention will be described. In the present embodiment, as shown in FIG. 5, a spacer piece having a thickness that is a little less than the protruding length of the partition 36 of the unit partition wall 33 on the magnetic metal plate 45 that can be attracted to the magnet packing 19 of the door 18. A holder 48 formed by projecting 46 is provided. The metal plate 45 has a length comparable to the entire length of the partition wall 15, and the spacer pieces 46 are spaced in the length direction of the metal plate 45 with an interval corresponding to the height of the case 35 of the unit partition wall 33. Are arranged along. Further, each spacer piece 46 has a shape in which the upper surface is inclined so as to become thinner toward the tip end side, so that each partition member 36 is pushed up and can be easily inserted into the lower side thereof.
[0023]
  As shown in FIG. 7, the warm / cold distribution vehicle of the present embodiment has a warm / cold operation andControl of humidity riseAn operation control device 50 that controls the operation is provided. The operation control device 50 stores a microcomputer and the like, and is provided on the input side mainly on, for example, an operation panel on the surface of the machine room.Control of humidity riseA changeover switch 51 for switching to the operation and a thermistor 52 for detecting the temperature in the warming chamber 16 are connected. On the output side, the compressor 23, the cooling fan 26, the warming unit 30, and the heating are connected. A fan 31 is connected.
[0024]
  When the hot / cold distribution vehicle accommodates the tray 42 on which hot food and cold food are placed and performs heat insulation and cold insulation (in use), the power is turned on and the temperature change operation is set by the changeover switch 51. To do. Then, the compressor 23, the cooling fan 26, the warming unit 30, and the heating fan 31 are driven by the operation control device 50. As a result, as shown in FIG. 8, on the refrigerator compartment 17 side, the cold air generated in the vicinity of the cooler 25 is blown into each duct 20 and blown out to the left and right refrigerator compartments 17 through the vent group 21. Thereafter, a circulation flow (solid line arrow in the figure) is introduced from the ceiling side of one of the refrigerating chambers 17 into the cooler chamber 22 so that the left and right refrigerating chambers 17 are cooled. On the other hand, on the warming chamber 16 side, warm air flows down along the central duct (hereinafter referred to as “central duct 28a”) by the heating fan 31 and is sent into the both end ducts 28b and 28b on the lower side. Ascending circulation flow (solid arrow in the figure) is generated, and part of the warm air is blown into the warming chamber 16 from the opening 27a of the central duct 28a and the vent holes 29 of both end ducts 28b and 28b. Thereby, the inside of the warm room 16 is heated by the radiant heat from the panel 27 and the warm air blown out from the opening 27a and the vent 29. At this time, the heat generation amount of the warming unit 30 is controlled by the operation control device 50 so that the detected temperature from the thermistor 52 becomes a predetermined heat retaining temperature.
[0025]
  Next, for example, when the arrangement is completed (after use), first, the paired doors 18 and 18 are opened, and the above-described operation is performed along the magnet packing 19 mounted on the back of the open end of one of the doors 18. The metal plate 45 of the holder 48 is adsorbed. Then, when the door 18 on the side where the holder 48 is adsorbed is closed and pushed inward, as shown in FIG. 6, the lower side of the partition 36 of each unit partition wall 33 where the tip of each spacer piece 46 opposes. The one end on the door 18 side of the partition 36 is lifted, and a gap S is formed between the lower unit partition wall 33 and the lower unit partition wall 33. Thereby, the warm storage room 16 and the refrigerator compartment 17 can be connected.
[0026]
  In the above configuration, the holder 48 is provided with the plurality of spacer pieces 46 integrally disposed on the metal plate 46. However, the present invention is not limited to this, and as shown in FIG. The spacer piece 47 may be inserted into the lower side of each unit partition wall 33. However, when the holder 48 is used, it is possible to insert a plurality of spacer pieces 46 at once by simply closing the door 18, and quicklyControl of humidity risePreparatory work for driving can be completed. Further, instead of the spacer piece 47, the tray 42 may be inserted below each unit partition wall 33 so that the warming room 16 and the refrigerating room 17 communicate with each other.
[0027]
  With the changeover switch 51 aboveControl of humidity riseWhen switching to the operation is set, the operation control device 50 of the present inventionControl meansFunction as. That is, while the warming room 16 side continues to drive the warming unit 30 and the heating fan 31, the compressor 23 is stopped and only the cooling fan 26 is driven for the cold room 17 side. As a result, the warming chamber 16 is kept warm, and heat is transferred from the gap S between the unit partition walls 33 formed by the spacer pieces 46 of the holder 48 to the refrigerating chamber 17 side (one point in FIG. 8). (Dashed arrow), the air in the vicinity of the gap S in the refrigerator compartment 17 is warmed. The warmed air is drawn into the ducts 20 through the cooler chambers 22 by the cooling fan 26 and blown out to the left and right refrigerator compartments 17 through the vent groups 21. A similar circulating flow is produced. And thisControl of humidity riseContinue driving for a specified timeAnd coolingInside the chamber 22 and the duct 20Suppresses the increase in humiditybe able to.
[0028]
  As described above, in the present embodiment, the spacer piece 46 is inserted below each unit partition wall 33 to allow the warming chamber 16 and the refrigerating chamber 17 to communicate with each other and the compressor 23 is stopped while the warming unit is stopped. 30, by driving the heating fan 31 and the cooling fan 26,Suppresses humidity increase in cooler chamber 22 and duct 20I am doing so. Therefore,Control of humidity riseEffective use of existing functions without installation of dedicated equipmentInside the cooler chamber 22 and inside the duct 20ofControl of humidity riseCan have a function. Moreover, on the side of the refrigerator compartment 17, only the cooling fan 26 is driven so that the air heated by the heat on the heater compartment 16 side is not only in the refrigerator compartment 17 but also in the cooler compartment 22 and the duct 20. Because it was fed in, inside the cooler 22 and the duct 20 where wiping work is particularly difficultSuppresses the increase in humidityCanKi ,MoldOccurrence can be prevented.
[0029]
  In this embodiment,Control of humidity riseThe following configuration has been added to increase efficiency.
  <Configuration 1>
  In a type in which warm air is blown into the warming chamber 16 from the vent 29 of the panel 27 as in the warm / cold distribution vehicle according to this embodiment, the food on the tray 42 is not dried during the warm / cold operation. In addition, it is necessary to adjust the rotational speed of the heating fan 31, that is, the air flow rate so that the air in the warming chamber 16 is circulated by the light wind. on the other hand,Control of humidity riseThere is no need to take this into consideration when driving. Therefore, in the present embodiment, the heating fan 31 is driven by the above-described operation control device 50 at a rotational speed that allows a gentle breeze to circulate in the same manner as the conventional one during the heating and cooling operation.Control of humidity riseAt the time of operation, it is controlled so as to be driven at a higher rotational speed during the temperature-cooling operation. That is, in this case, the operation control device 50 also functions as the air flow rate adjusting means of the present invention.
  With this configuration,Control of humidity riseDuring operation, the amount of heat transferred to the refrigerator compartment 17 can be increased by circulating the air in the refrigerator compartment 16 faster. That is, the heat in the warm room 16 is transmitted more to the cold room 17 side, and the temperature of the air circulating in the cold room 17 side is quickly raised.Necessary to suppress humidity riseTime can be shortened.
[0030]
  <Configuration 2>
  During the heating / cooling operation, it is necessary to control the amount of heat generated by the cord heater so that the temperature in the storage room 16 becomes a temperature suitable for keeping food warm.Control of humidity riseDuring operation, the temperature may exceed the heat retention temperature. Therefore, in the present embodiment, the amount of heat generated by the coat heater is controlled based on the temperature detected by the thermistor 52 by the operation control device 50 so that the temperature in the warming chamber 16 becomes the above-mentioned heat retention temperature during the temperature-cooling operation. AndControl of humidity riseDuring operation, the temperature is controlled to exceed the heat retention temperature. This speeds up the temperature rise on the refrigerator compartment 17 side, andNecessary to suppress humidity riseTime can be shortened.
[0031]
  Second Embodiment
  The difference between this embodiment and the first embodiment lies in the back surface structure of the heating panel, and the other points are the same as in the first embodiment. Therefore, the description which overlaps with 1st Embodiment is abbreviate | omitted, and only a different part is demonstrated below.
  FIG. 10 is a perspective view showing the back surface structure of the heating panel 60 according to the present embodiment. As shown in the figure, on the back surface of the panel 60, three ducts 61 are formed by dividing a region excluding a predetermined width portion on both front and rear side edges into approximately three equal parts in the front-rear direction. A reinforcing member 62 that prevents the panel 60 from warping is attached at a position between the ducts 28. The reinforcing member 62 is made of a channel material and is mounted from the lower end of the panel 60 to the vicinity of the upper end portion. Moreover, the lower end of the panel 60 is cut | disconnected and the blower outlet 63 opened to the warming chamber 16 side is formed.
[0032]
  In addition, a guide plate 65 having an introduction portion 64 provided on the upper edge is provided on the front and rear side edges of the back surface of the panel 60 with a gap between the guide plate 65 and the side plate 60a, whereby a downward flow passage 66 is formed. A plurality of outlets 66a are formed on the surface of the flow passage 66 at intervals in the height direction.
[0033]
  Then, when the warming unit 30 and the warming fan 31 are driven, warm air flows down the ducts 61 by the warming fan 31 from the air outlet 63 formed at the lower end to the warming chamber 16 side. It comes to be blown out. At the same time, warm air is also sent to the introduction section 64 side by the heating fan 31 and is blown out from the outlets 66a to the warming chamber 16 side while flowing down the circulation pipe 66. Thereby, the inside of the warm storage chamber 16 is heated by the radiant heat from the panel 60 and the warm air blown from the outlets 63 and 66a. Unlike the configuration of the first embodiment in which the cord heater drawn from the warming unit 30 is arranged on the back surface of the three ducts 61, a configuration in which the cord heater is arranged in each duct 61 may be used. .
[0034]
  <Related technologies>
  The following improvements have been proposed for the hot / cold distribution vehicle according to the present embodiment, which will be described below together with the problems (FIGS. 11 to 13).
  FIG. 11 shows a circuit diagram of the refrigeration apparatus. The compressor 23 compresses a gas refrigerant such as chlorofluorocarbon, the condenser 22 cools and liquefies the refrigerant compressed by the compressor 23, and the cooler 25 evaporates the liquid refrigerant to cause a cooling action and expands. The valve 53 is between the condenser 22 and the cooler 25 to ensure a pressure difference.
[0035]
  By the way, this refrigeration apparatus is provided with a protection function for avoiding a situation in which, for example, a pipe is ruptured due to an increase in pressure on the high pressure side. With respect to this protection function, conventionally, a pressure switch 55 that outputs an off signal at a predetermined operating pressure or higher and outputs an on signal when a predetermined return pressure or lower is provided on the high pressure side of the refrigeration apparatus. The compressor 23 is stopped when the pressure on the high pressure side exceeds the operating pressure, and then the compressor 23 is restarted when the pressure decreases to the return pressure.
  However, in the conventional configuration in which the compressor 23 is driven and controlled simply based on the ON / OFF signal of the pressure switch 55, the stop time of the compressor 23 changes according to a change in ambient temperature or the like. For example, if the stop time of the compressor 23 becomes too long, the temperature of the refrigerator compartment 17 rises due to the heat from the refrigerator compartment 16, and before the compressor 23 is restarted, the temperature of the refrigerator compartment 17 is not lowered sufficiently. Then, the pressure on the high-pressure side rises again and the compressor 23 is stopped, and there is a problem that the temperature in the refrigerator compartment 17 gradually increases as shown in FIG. 13 (B).
[0036]
  This related technology is for coping with such problems. Specifically, as shown in FIG. 11, the high pressure side of the refrigeration apparatus outputs an off signal above a predetermined operating pressure and operates to output an on signal when the pressure falls below a predetermined return pressure. The compressor 23 is driven and controlled by a control device (not shown) based on an on / off signal from the pressure switch 55. That is, when the power supply of the hot / cold distribution vehicle is turned on to drive the refrigeration apparatus, the pressure on the high pressure side of the refrigeration apparatus gradually increases.
  At this time, as shown in FIG. 12, the control device is in a standby state waiting for an OFF signal from the pressure switch 55 (step S1). When the high-pressure side pressure of the refrigeration system rises to the operating pressure, the pressure switch 55 operates and the control device receives an off signal (“Y” in step S1), shuts off the power supply to the compressor 23 and stops. Let Here, in this embodiment, a predetermined standby time (for example, 5 minutes) is counted in step S2, and the signal level from the pressure switch 55 is detected after the standby time has elapsed. When the ON signal is received from the pressure switch 55, the power supply to the compressor 23 is restored and restarted ("Y" in step S3), and the ON signal is received only when the OFF signal is still received. It waits until it becomes, and it operate | moves so that the compressor 23 may be restarted (step S4).
  In this embodiment, the return pressure of the pressure switch 55 is set higher than that of the conventional one, and normally, the pressure switch 55 is adjusted to return and output an ON signal before the standby time has elapsed. It should be noted that the pressure machine 23 is restarted after receiving the ON signal in steps S3 and S4 when the high-pressure side pressure does not drop to the return pressure even after the waiting time elapses depending on the ambient temperature or the like. This is to avoid the situation of restarting the compressor 23 in such a high pressure state and to protect the refrigeration apparatus.
[0037]
  According to such a configuration, as shown in FIG. 13A, the stop time of the compressor 23 can be set to a predetermined standby time (5 minutes) without being affected by changes in the ambient temperature or the like. That is, the compressor 23 is restarted after a predetermined waiting time regardless of whether or not the pressure switch 55 is restored, so that the stop time of the compressor 23 can be kept constant even when the ambient temperature changes. Thus, the inside of the refrigerator compartment 17 can be cooled according to the set temperature. In this embodiment, the standby time is set to a time according to the type of the refrigeration apparatus, the arrangement environment, and the like, but at least the temperature in the refrigeration chamber 17 when the compressor 23 is stopped affects the influence of the refrigeration chamber 16. Even if it is received, it is necessary to set the time within such a time that the compressor 23 is restarted before reaching the set temperature (5 ° C. to 15 ° C.) or higher of the refrigerator compartment.
[0038]
  <Other embodiments>
  The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.
  (1) As the communication means, for example, all or a part of the unit partition wall 33 is configured to be detachable from the main body 10,Control of humidity riseDuring operation, the unit partition wall 33 may be removed so that the warm room 16 and the cold room 17 communicate with each other.
  (2) In each of the above embodiments, the spacer pieces 46 and 47 are inserted into the lower side of the unit partition wall 33 as the holding means. However, the present invention is not limited to this. For example, the partition body 36 may be a lower unit partition wall. A lock mechanism including a lock piece and an engagement portion that are engaged with each other at a position separated from the position 33 and accommodated in the case 35, and a release mechanism that releases the engagement state are provided between the partition 36 and the case 35. It may be a configuration. Note that the locking mechanism and the release mechanism may be provided between the stopper body 37 and the case 35.
  (3) In each of the above embodiments, a pass-through type arrangement vehicle has been exemplified. However, the present invention is also applicable to a standard type arrangement vehicle in which the tray can be pulled out only from the insertion direction.
  (4) The present invention can be widely applied to all the temperature and refrigeration apparatuses provided with a temperature storage room and a refrigerator room on both sides of the partition wall.
[Brief description of the drawings]
FIG. 1 is a front view of a hot and cold distribution vehicle according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing the internal structure of a heating / cooling distribution vehicle.
FIG. 3 is a perspective view of a duct portion arranged on a heating panel.
[Fig. 4] Side view of partition wall
FIG. 5 is a side view of a partition wall before inserting a spacer piece and a cross-sectional view of a holder.
FIG. 6 is a side view of a partition wall after inserting a spacer piece and a sectional view of a holder.
FIG. 7 is a block diagram of an operation control mechanism.
FIG. 8 is a front view showing the air flow in the body.
FIG. 9 is a side view of the partition wall after inserting a separate spacer piece.
FIG. 10 is a perspective view of a duct portion arranged in the heating panel according to the second embodiment.
FIG. 11 is a circuit diagram of a related-art refrigeration apparatus.
FIG. 12 is a flowchart of compressor control.
FIG. 13 Time chart of compressor control
FIG. 14 is a front view of a conventional hot and cold distribution car.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 10 ... Main body 15 ... Partition wall 16 ... Warm room 17 ... Refrigerator room 25 ... Cooler 26 ... Cooling fan (cooling ventilation means) 30 ... Warm storage unit 31 ... Warming fan (heating air blowing means) 33 ... Unit partition wall 36 ... Partition body 37 ... Stopper body 42 ... Tray 46,47 ... Spacer piece 50 ... Operation control device 51 ... Changeover switch S ... Gap

Claims (5)

In the main body composed of a heat insulating box, a warm room and a cold room are formed on both sides of the partition wall, and a tray can be accommodated across the both chambers through the partition wall. is kept warm by the heating device, the temperature refrigeration apparatus that the refrigerating chamber is cold by cool air generated by the cooler of the refrigeration system is circulated through the cold air duct in the cooling blower means, said cooling a vessel and a method for suppressing the increase in humidity of the cold air duct,
The warm room and the cold room are communicated, and the heating device is driven on the warm room side, while only the cooling air blower is driven on the cold room side with the freezer being stopped. A cooler for a temperature refrigeration apparatus and a method for suppressing humidity rise in a cold air duct . In the main body consisting of a heat insulating box, a partition wall is provided by stacking a plurality of unit partition walls having movable members that can move up and down, so that a warm room and a cold room are insulated on both sides of the partition wall, A tray moves between the upper and lower unit partition walls by moving the movable member and can be accommodated across the two chambers. The warming chamber is kept warm by a heating device, and the refrigerating chamber is cooled by a freezer. In the hot and cold refrigeration apparatus in which the cold air generated in the cooler is kept cold by being circulated through the cold air duct by the cooling air blowing means,
Communication means for enabling communication between the warm room and the cold room;
A heating and refrigeration apparatus comprising: a control unit that drives the cooling unit while driving the heating unit while stopping the refrigeration unit.   3. The temperature according to claim 2, wherein the communication means includes a holding means capable of holding the movable member in a state where the movable member is moved so that a gap is formed between the upper and lower unit partition walls. Refrigerator. The warming room is adapted to keep the warm air generated by the heating device circulated by the warming air blowing means, and the air blowing amount capable of changing the air blowing amount of the warming air blowing means. The air flow rate adjusting unit includes a function of driving the heating air blowing unit so that the air blowing amount is larger than that during a normal heat retaining operation when the control unit is executed. The temperature refrigeration apparatus according to claim 2 or 3. 5. The heating / cooling apparatus according to claim 2, wherein the heating device is driven at a set temperature higher than a set temperature during a normal heat-retaining operation when the control means is executed. .

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