JP2008011955A - Warming cabinet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warming cabinet for circulating air heated by a heating means and warming an object, especially capable of deodorizing circulated air by a deodorization filter and preventing discharge of odor components again from the deodorization filter even under a high temperature condition. <P>SOLUTION: In a food service cart 1, when a cross flow fan 57 is driven and a warming switch 34 is turned on, by the drive of a flow path switching motor 67, a flow path switching member 63 closes an opening 66 for deodorization. In this case, the air inside a warming chamber 46 does not pass through the deodorization filter 60 and is circulated through an opening 65 for hot air. On the other hand, when the warming switch 34 is turned off, the flow path switching member 63 closes the opening 65 for the hot air. In this case, the air inside the warming chamber 46 is circulated inside the warming chamber 46 by a route passing through the deodorization filter 60 through the opening 66 for the deodorization. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a warm storage that warms an object by circulating air heated by a warming means, and more particularly to a warm storage that can deodorize the circulating air.

At present, a warm storage room for storing food as an object is used in various usage environments. In these warm storage rooms, the air inside the warm storage room is heated and the heated air is circulated. That is, in these warm storages, the warmed air is circulated to keep the temperature of the warm storage uniform and high, and the stored items such as foods are kept warm.
Since the inside of the hot storage can be made uniform and high temperature in this way, the hot storage is used in a use environment (for example, a banquet hall of a hospital or a hotel) where it is necessary to provide hot food for a large number of people. Are often used.

  Here, in such a warm storage, an object that emits a strong odor is often stored. For example, in a warm storage room for storing food as described above, foods that emit a very strong odor such as curry and kimchi may be stored. In this case, the storage unit cannot be opened due to the storage of the object, and the strong odor fills the storage unit. As a result, even after an object (such as curry) that emits a strong odor is taken out of the storage unit, the strong odor remains in the storage unit. The odor remaining in the storage section is not easily removed even if the storage section is carefully cleaned, and the next time the warmer is used, it gives the operator an unpleasant odor and creates a new warmth. It will have an adverse effect such as odor remaining on the object stored in the warehouse. For this reason, it was necessary to deodorize the air in the hot storage.

Here, what was described in patent document 1 is known as invention regarding the deodorization of air. The invention described in Patent Document 1 is a warm air / deodorizing device applied to a toilet, and when the air outside the device is sucked and blown out again, the odor component in the air is removed by the deodorizing filter. In this way, deodorization is performed.
JP-A-8-173519

  However, when the invention described in Patent Document 1 is used for deodorizing the air in the warm storage, the odor component contained in the air in the warm storage is not sufficiently removed. End up. The reason will be described. The deodorizing apparatus described in Patent Document 1 is configured such that air passes through the deodorizing filter even during warm air operation (see FIG. 3 of Patent Document 1). Therefore, when the deodorizing apparatus described in Patent Document 1 is used for the warm storage, air heated to a high temperature passes through the deodorizing filter.

In this regard, in the case of the deodorizing method using the deodorizing filter as in Patent Document 1, when the deodorizing filter is used under a high temperature condition, the odor component once adsorbed and removed is again released into the air. The phenomenon of re-release occurs. In this regard, when used in a place where air does not need to be heated as in Patent Document 1, re-release of this odor component is not a big problem, but deodorization is performed in a high temperature environment like a warm storage. When using an apparatus, it becomes a big problem.
That is, when the deodorizing device of Patent Document 1 is applied to a warm storage, it is necessary to increase the temperature in the warm storage, so that the odor component is re-released and the deodorizing device is provided. Odor will remain in the hot storage. That is, even if the deodorizing apparatus described in Patent Document 1 is used in the warm storage, the problem caused by the odor remaining in the warm storage cannot be solved.

  The present invention has been made in order to solve the above-mentioned conventional problems, and particularly relates to a warm storage that warms an object by circulating air heated by a warming means, and is particularly circulated. The purpose of the present invention is to provide a warm storage that deodorizes air with a deodorizing filter and that does not cause re-release of odor components from the deodorizing filter even under high temperature conditions.

  In order to achieve the above object, the warm storage according to claim 1 includes a storage unit capable of storing an object, a heating means for heating the air in the storage unit, and an air circulation for circulating the air in the storage unit. Means, a first flow path comprising a deodorizing filter that removes odor components present in the air when the air circulated by the air circulation means passes, and the air circulated by the air circulation means passes A second flow path, and a flow path closing member that is disposed in the circulation flow path and blocks the inflow of air to either the first flow path or the second flow path, A flow path switching means for switching a flow path in which the inflow of air is blocked by the flow path closing member to either the first flow path or the second flow path according to the temperature state of the air in the storage section. It is characterized by.

  The warm storage according to claim 2 is the warm storage according to claim 1, wherein the flow path switching means is configured to supply air to the first flow path when the warming means is driven. The inflow is blocked, and when the heating means is not driven, the inflow of air to the second flow path is blocked.

  And the warm storage which concerns on Claim 3 is a warm storage of Claim 1, Comprising: The temperature measurement means which measures the temperature of the air in the said accommodating part is provided, The said flow-path switching means is the said temperature measurement means If the measurement result is greater than or equal to a predetermined value, the flow of air into the first flow path is blocked, and if the measurement result of the temperature measurement means is less than the predetermined value, the flow of air into the second flow path It is characterized by blocking.

The warm storage according to claim 1 warms the inside of the storage unit by circulating the air in the storage unit heated by the heating unit through the circulation channel using the air circulation unit. Here, the circulation channel is formed with a first channel in which a deodorizing filter is disposed, and a second channel through which air in the storage unit passes. And according to the temperature state of the air in the storage part, the flow path closing member is switched by the flow path switching means, whereby the circulation of the air in the storage part is made to circulate through the first flow path and the second flow path. To the circulating flow passing through. When the air in the storage section passes through the first flow path, it passes through the deodorizing filter, so that the odor component contained in the air can be removed. On the other hand, when the air in the storage section passes through the second flow path, the warmed air circulates, so that the storage section can be heated.
Here, since the first flow path and the second flow path can be selectively switched depending on the temperature state of the air in the storage unit, the deodorizing filter can be prevented from becoming unnecessarily high. Therefore, the re-release of the odor component adsorbed and removed by the deodorizing filter can be prevented.

  Further, in the warm storage according to claim 2, in the warm storage according to claim 1, when the heating means is driven, the flow path switching means is configured to supply air to the first flow path. When the inflow is blocked and the heating means is not driven, the inflow of air to the second flow path is blocked. That is, when the heating means is driven, the air in the storage portion becomes a circulating flow that passes through the second flow path. In this case, the air heated by the heating means circulates in the storage unit without passing through the deodorization filter, so that the inside of the storage unit is heated without causing odor components to be re-released from the deodorization filter. can do. On the other hand, when the heating means is not driven, the air in the storage portion becomes a circulating flow passing through the first flow path. At this time, since the heating means is not driven, the air in the storage section does not reach a high temperature, and even if it passes through the deodorizing filter, the deodorizing filter is not heated to a high temperature. That is, in this case, the odor component contained in the air in the storage portion can be adsorbed and removed by the deodorizing filter, and the odor component that has already been adsorbed and removed is not re-released. That is, the warm storage can warm and deodorize the storage unit, and prevent re-release of odor components from the deodorizing filter.

In the warm storage according to claim 3, the flow path switching unit is configured to determine whether the air temperature in the storage unit measured by the temperature measurement unit is equal to or higher than a predetermined value. Change the circulation path.
When the measurement result of the temperature measuring means is equal to or greater than a predetermined value, the inflow of air into the first flow path is blocked, so that the air in the storage portion becomes a circulating flow that passes through the second flow path. At this time, the air heated to a predetermined value or more circulates in the storage unit without passing through the deodorization filter, so that the inside of the storage unit can be heated and the odor component from the deodorization filter Can be prevented from being released again.
When the measurement result of the temperature measuring means is less than the predetermined value, the inflow of air into the second flow path is blocked, so that the air in the storage portion becomes a circulating flow passing through the first flow path. At this time, since the air in the storage section passes through the deodorizing filter, the odor component in the air can be adsorbed and removed. Since the air passing through the deodorizing filter is less than the predetermined value, the deodorizing filter is not heated to a high temperature, and re-release of odor components can be prevented. Therefore, in the said warm storage, while being able to warm and deodorize a storage part, the re-release | release of the odor component from a deodorizing filter can be prevented reliably.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment in which a food storage according to the present invention is capable of storing and refrigeration of foods, and which is specific to a distribution vehicle used for food distribution will be described in detail with reference to the drawings.

(First embodiment)
First, a schematic configuration of a layout vehicle according to the present embodiment will be described in detail with reference to the drawings.
As shown in FIGS. 1 and 2, the distribution vehicle 1 is a main body of a heat insulating structure having a rectangular box shape as a whole with both left and right side surfaces (in FIG. 3, the respective outer side surfaces in the up and down direction) intersecting the traveling direction being opened. 2 is provided.
As shown in FIG. 2, a storage portion 9 capable of storing a tray for food on which food is placed is formed inside the main body 2, and the storage portion 9 is partitioned into four chambers in the front-rear direction. ing. That is, the storage unit 9 is formed with four chambers: a first refrigerator compartment 46A, a first refrigerator compartment 45A, a second refrigerator compartment 45B, and a second refrigerator compartment 46B (see FIG. 2). And on the open surface (namely, opening surface with respect to the accommodating part 9) of the main body 2, with respect to each room | chamber of 1st refrigerator compartment 46A, 1st refrigerator compartment 45A, 2nd refrigerator compartment 45B, and 2nd refrigerator compartment 46B. Each door 3 is provided so as to be openable and closable (see FIG. 1). Therefore, the food tray can be taken in and out of the storage portion 9 by opening and closing the door 3.
In addition, since the structure in the accommodating part 9 is demonstrated in detail later, description here is abbreviate | omitted.

And on the bottom surface of the main body 2, each of the free wheels 5 configured to be freely changeable in the direction of the left and right corners on the rear side in the running direction and the front end edge in the running direction can be freely rotated. It is arranged. Further, a pedal lock 6 that brakes the movement of the distribution vehicle 1 is disposed between the pair of universal wheels 5 disposed on the operation side on the rear side in the traveling direction.
In addition, a pair of fixed wheels 7 are rotatably disposed at the center position in the running direction of the bottom surface of the main body 2 so as to be spaced apart from the respective left and right edge portions. Each fixed wheel 7 is provided with a known braking device (see JP 2002-264818 A).

  On the other hand, cylindrical handles 8 bent in a U-shape for pulling and pushing the main body 2 are attached to the front and rear sides of the main body 2 so as to be rotatable in the vertical direction. Here, a brake lever (not shown) is attached to the handle 8 disposed on the rear side surface of the main body 2. That is, by operating the brake lever, it is possible to apply a braking force to each fixed wheel 7, and thus it is possible to brake the layout vehicle 1.

In the upper part of the main body 2, a machine room 25 is formed in which various units required for temperature control and the like of the distribution vehicle 1 are disposed. Various units such as the cooling unit 11 and the air blowing unit 21 are disposed in the machine room 25.
And as shown in FIG. 1, the operation panel 31 is arrange | positioned at the machine room 25 side surface. The operation panel 31 is provided with a refrigeration switch 32, a warm switch 34, and a fan switch 36. The refrigeration switch 32 is a switch for turning on / off driving of the refrigeration unit 13 and the like. The warm switch 34 is a switch for turning on / off driving of a heater or the like disposed in a heater panel 43 described later. The fan switch 36 is a switch for turning on / off the driving of the blower unit 21.
Further, as shown in FIG. 1, a plurality of intake holes 26 are formed on the right side of the operation panel 31. This intake hole 26 allows the outside air to be sucked into the machine room 25. A plurality of exhaust holes are formed in the upper surface of the machine room 25.

As shown in FIG. 3, the cooler chamber 12 is disposed in the center of the machine chamber 25. The cooler chamber 12 houses a cooling unit 11 for supplying cool air into the main body 2 (see FIG. 2). The cooling unit 11 includes an internal fan 71, a cooler 73, and the like.
A refrigeration inlet 53 and a refrigeration outlet 54 communicating with the refrigeration chamber 45 are opened on the bottom surface of the cooler chamber 12 (see FIG. 2). Therefore, by driving the internal fan 71, the air in the refrigerator compartment 45 can be sucked through the refrigerator inlet 53 and blown out from the refrigerator outlet 54, and the air in the refrigerator compartment 45 can be circulated. It becomes possible.

In the machine room 25, the refrigeration unit 13 is disposed on the side of the cooler room 12. The refrigeration unit 13 is disposed on the condenser 15 disposed on the side edge of the upper surface of the main body 2, the fan motor 16 disposed on the leeward side of the condenser 15, and further disposed on the leeward side of the fan motor 16. The compressor 17 and the filter 15 are arranged on the air inlet side of the front surface of the condenser 15. The refrigeration unit 13 is connected to the cooling unit 11 by a refrigerant pipe.
Since the cooling unit 11 and the refrigeration unit 13 disposed in the machine room 25 can cool the air in the first refrigeration chamber 45A and the second refrigeration chamber 45B and blow into the respective refrigeration chambers, the first refrigeration chamber It becomes possible to refrigerate the food accommodated in 45A and the 2nd refrigerator compartment 45B.

  On the other hand, the blower units 21 that circulate the air in the first and second warming chambers 46A and 46B are disposed at the front end and the rear end of the machine room 25, respectively.

Here, a warm storage inlet 51 and a warm storage outlet 52 are formed on the bottom surface of the machine room 25 in the vicinity of the blower unit 21 (see FIG. 2). The warm storage inlet 51 and the warm storage outlet 52 communicate with the warm chamber 46 (first warm chamber 46A and second warm chamber 46B), respectively. Here, the warm storage inlet 51 is formed at a position corresponding to a substantially central portion of the ceiling surface of the warm room 46, and the warm air outlet 52 is a position corresponding to an end of the warm room 46 (described later). (In the vicinity of the inner wall surface 2A) (see FIG. 2).
As a result, the air blowing unit 21 can suck the air in the warming chamber 46 from the warming inlet 51 and blow out the sucked air into the warming chamber 46 through the warming outlet 52. it can. At this time, since the air in the warming chamber 46 is warmed by the heater panel 43 described later, the air in the first warming chamber 46A and the second warming chamber 46B is circulated by the blower unit 21 to warm the warming chamber. The inside of the chamber 46 can be heated uniformly, so that the food stored in the first and second storage chambers 46A and 46B can be stored.

Next, a schematic configuration of the storage unit 9 will be described with reference to FIG.
As shown in FIG. 2, an intermediate wall 41 is erected in the center of the storage portion 9. The intermediate wall 41 communicates with the cooler chamber 12 via the refrigeration outlet 54 and also functions as a cool air distribution duct.
And the storage part 9 divided into the two chambers by the intermediate wall 41 becomes a first storage chamber 10A and a second storage chamber 10B, respectively, in which a tray for food is stored.

  Here, each of the first storage chamber 10A and the second storage chamber 10B is provided with a known heat insulating partition wall 42 (see JP 2001-28634 A). Accordingly, the storage walls (first storage chamber 10A and second storage chamber 10B) are divided into two chambers by the partition wall 42. That is, in each storage chamber (the first storage chamber 10A and the second storage chamber 10B), the refrigerator compartment 45 (the first refrigerator compartment 45A and the second refrigerator compartment 45B) is provided between the intermediate wall 41 and the partition wall 42. It is formed. In the refrigerator compartment 45, the cooled air is blown from the cooling unit 11 through the intermediate wall 41, so that the room temperature is maintained at 5 to 7 ° C.

And in the storage part 9, two chambers located outside the refrigerator compartment 45 (1st refrigerator compartment 45A, 2nd refrigerator compartment 45B) are the 1st refrigerator compartment 46A and the 2nd refrigerator compartment, respectively.
In each warming chamber 46, a heater panel 43 is disposed at a predetermined interval from the storage unit inner wall surface 2A. The heater panel 43 has a size that substantially covers the inner wall surface 2 </ b> A of the storage unit, and includes a heater that heats the heater panel 43. And the upper end part of the said heater panel 43 is arrange | positioned so that it may contact | abut to storage part ceiling surface 2B (The warming blower outlet 52 opening edge vicinity).

Here, since the upper end portion of the heater panel 43 is in contact with the storage unit ceiling surface 2 </ b> B, the air blown by the blower unit 21 passes between the storage unit inner wall surface 2 </ b> A and the heater panel 43 through the warming outlet 52. Is blown out. That is, the inner wall surface 2 </ b> A of the storage section and the heater panel 43 constitute a duct section 48 through which air in the warming chamber 46 passes.
Here, since the lower end of the heater panel 43 is located slightly above the bottom surface of the storage portion 9 and forms a gap of a predetermined size, the air that has passed through the duct portion 48 enters the warming chamber 46 from the gap. Blown out.
Further, a plurality of through-holes are formed in the edge portions on both sides of the heater panel 43 at positions corresponding to the trays for food stored in the storage chamber. Accordingly, the air blown to the duct portion 48 is also blown out from the through hole.

Here, the air in the warming chamber 46 is warmed by the heater disposed in the heater panel 43, and circulates in the warming chamber 46 through the warming chamber 46 and the duct portion 48 by the blower unit 21. That is, since warm air circulates in the warming chamber 46, the room temperature of the warming chamber 46 (the first warming chamber 46A and the second warming chamber 46B) is maintained at 60 to 80 ° C.
And the thermistor 69 which detects the temperature in the warming chamber 46 is arrange | positioned in 46 A of 1st warming chambers, and the 2nd warming chamber 46B, respectively (refer FIG. 6).

  The partition wall 42 is configured by stacking a plurality of unit partition walls in the vertical direction. By inserting a tray for eating between the unit partition walls, the plurality of trays for food can be vertically moved. It is configured to be supported and stored.

Next, the circulation of air in each of the refrigerator compartments 45 and each of the refrigerator compartments 46 will be described with reference to FIG.
First, the cold air circulation path in the refrigerator compartment 45 will be described.
As shown in FIG. 2, by driving the refrigeration unit 13 and the internal fan 71, the air in the refrigerator compartment 45 can be sucked from the refrigerator inlet 53. The air sucked into the cooler chamber 12 is cooled by the cooler 73 and enters the intermediate wall 41 that also serves as a duct for circulating cold air through the refrigeration outlet 54 based on the driving of the internal fan 71. It is sent.
Here, similarly to the heater panel 43, a plurality of through holes are formed in the intermediate wall 41 at positions corresponding to each food tray stored in each refrigerator 45 (not shown). Therefore, the cold air blown out to the intermediate wall 41 is blown out into the respective refrigerator compartments 45 from the through-holes, so that the temperature in the refrigerator compartment 45 can be lowered. Then, the cold air blown into the refrigerator compartment 45 rises in the refrigerator compartment 45 and is led to the cooling unit 11 from the refrigerator inlet 53 again.
As described above, in the allocation vehicle 1, the air in the refrigerator compartment 45 is circulated through the refrigerator compartment 45, the cooler compartment 12, and the intermediate wall 41, and the cold air cooled by the cooler 73 is circulated. The inside of the refrigerator compartment 45 is configured to be cooled.

Next, the warm air circulation path in the warm chamber 46 will be described.
By driving the cross flow fan 57 of each blower unit 21 together with the heater of the heater panel 43, the air in each warming chamber 46 is sucked into the blower unit 21 from the warm suction port 51 as shown in FIG. Then, it is blown out from the warm storage outlet 52 toward the duct portion 48. The air blown into the duct portion 48 descends the duct portion 48 while being warmed by the heater panel 43 that is heated as the heater generates heat. The warm air heated by the heater panel 43 is blown into the warming chamber 46 from the lower end of the duct portion 48 and a plurality of through holes formed in the heater panel 43. The warm air blown into the warming room 46 rises in the warming room 46 and is sucked into the blower unit 21 from the warming inlet 51 again.
As described above, in the warming chamber 46 of the distribution vehicle 1, a circulation flow that circulates through the warming chamber 46, the blower unit 21, and the duct portion 48 is generated, and the warm air heated by the heater panel 43 is circulated. The inside of the warm room 46 can be heated.

  Here, the configuration of the blower unit 21 will be described in detail with reference to the drawings. 4 and 5 are side sectional views showing the internal configuration of the blower unit 21. 4 and 5 show a side cross section of the blower unit 21 disposed on the second warming chamber 46B side. In this regard, the air blowing unit 21 disposed on the first warming chamber 46A side has the same configuration as the air blowing unit 21 on the second warming chamber 46B side, and therefore the description thereof is omitted.

As shown in FIGS. 4 and 5, the blower unit 21 according to the present embodiment includes a cross flow fan 57, a flow path switching member 63, and a deodorizing filter 60.
The cross flow fan 57 is rotatably provided above the hot air outlet 52 inside the air blowing unit 21. Then, by inputting the fan switch 36, the rotational drive control of the cross flow fan 57 is performed, and the air in the warming chamber 46 is sucked from the warming inlet 51 and from the warming outlet 52 to the duct part 48. And blow out.

A deodorizing filter 60 is disposed above the machine room bottom surface 25 </ b> A on the warm suction inlet 51 side of the cross flow fan 57. The deodorizing filter 60 is a filter member having a honeycomb structure, and adsorbs and removes odor components (for example, trimethylamine, methyl mercaptan, etc.) contained in the air by allowing the air to permeate.
Here, the deodorizing filter 60 carries an artificial enzyme (biomimetic enzyme) on its surface. And in the said deodorizing filter 60, by using an artificial enzyme as a catalyst under normal temperature conditions, the odor component adsorbed on the surface of the deodorizing filter 60 is decomposed by oxidation-reduction reaction. Therefore, under normal temperature conditions, the adsorbed odor component is hardly released again into the air, and the deodorized air can be supplied to the warming chamber 46.

  And under the deodorizing filter 60, the opening 65 for warm air opened by the predetermined dimension is formed between 25A of machine room bottom surfaces, and the storage part ceiling surface 2B. When the air in the warm storage chamber 46 is sucked from the warm storage inlet 51 by driving the cross flow fan 57, the sucked air is guided to the cross flow fan 57 through the hot air opening 65. The crossflow fan 57 is blown out to the warm storage outlet 52.

  Further, a deodorizing opening 66 is formed in the machine room bottom surface 25 </ b> A which is above the warm storage inlet 51. When the cross flow fan 57 is driven, the air in the warm storage chamber 46 reaches the deodorization filter 60 from the warm storage inlet 51 through the deodorization opening 66. And when the said air passes the deodorizing filter 60, the odor component in air is adsorbed and removed by the deodorizing filter. The deodorized air reaches the cross flow fan 57 and is blown out to the warm air outlet 52 by the cross flow fan 57.

Here, a flow path switching member 63 is disposed below the deodorizing filter 60. The flow path switching member 63 is a plate-like member that is slightly larger than the opening areas of the hot air opening 65 and the deodorizing opening 66, and one end of the flow path switching member 63 is pivoted on the machine room bottom surface 25 </ b> A near the upper edge of the hot air opening 65. It is arrange | positioned so that rotation is possible. That is, by rotating the flow path switching member 63, the first state (see FIG. 4) in which the hot air opening 65 is closed by the flow path switching member 63, and the deodorizing opening 66 by the flow path switching member 63. The second state (see FIG. 5) to be closed can be switched.
The flow path switching member 63 is connected to a flow path switching motor 67 capable of forward and reverse rotation via a drive transmission mechanism (not shown). In other words, the flow path switching member 63 can be switched to the first state or the second state by driving and controlling the flow path switching motor 67.

Here, the air flow path in the blower unit 21 when the flow path switching member 63 is switched will be described.
First, the air flow when the flow path switching member 63 is switched to the first state will be described in detail with reference to FIG. As indicated by the dashed arrows in FIG. 4, when the driving of the cross flow fan 57 is started, the air in the warm chamber 46 is sucked into the blower unit 21 from the warm suction port 51. Here, the air sucked from the warm storage inlet 51 passes only through the deodorizing opening 66 without passing through the hot air opening 65 because the flow path switching member 63 is in the first state. Become. The air that has passed through the deodorizing opening 66 is deodorized by passing through the deodorizing filter 60, and is guided to the cross flow fan 57.
Thereafter, the deodorized air is blown out to the duct portion 48 through the warm air outlet 52 based on the driving of the cross flow fan 57.

  Next, the flow of air when the flow path switching member 63 is switched to the second state will be described. In FIG. 5, as indicated by a broken line arrow, when driving of the cross flow fan 57 is started, the air in the warm chamber 46 is sucked into the blower unit 21 through the warm suction port 51. At this time, the flow path switching member 63 is in the second state, and the deodorizing opening 66 is closed by the flow path switching member 63. Accordingly, the air sucked into the blower unit 21 passes only through the hot air opening 65 and is guided to the cross flow fan 57. Then, the air is blown out toward the hot air outlet 52 by driving the cross flow fan 57. At this time, since the cross flow fan 57 is driven, an air flow toward the hot air outlet 52 is generated, so that no air flows in the direction of the deodorizing filter 60.

Next, the configuration of a control system related to the temperature control and the like of the refrigerator compartment 45 and each of the refrigerator compartments 46 of the distribution vehicle 1 configured as described above will be described with reference to FIG.
As shown in FIG. 7, the control system related to the temperature control and the like of the refrigerator compartment 45 and the refrigerator compartment 46 is configured with a control unit 81 as a core. The control unit 81 includes a CPU 82, a ROM 83, a RAM 84, and the like. The CPU 82 is connected to a clock circuit 86 that outputs a predetermined clock signal.
The ROM 83 stores various programs necessary for controlling the distribution vehicle 1 such as a temperature control program of the refrigerator compartment 45 and each of the refrigerator compartments 46 and a flow path switching processing program described later. The CPU 82 performs various calculations based on various programs stored in the ROM 83. The RAM 84 is used as a temporary storage unit related to the arithmetic processing result of the CPU 82 and the like.
An operation panel 31 is connected to the control unit 81. As described above, the operation panel 31 includes the refrigeration switch 34 for turning on / off the refrigeration control drive of each refrigeration chamber 46, the refrigeration switch 32 for turning on / off the refrigeration control drive of each refrigeration chamber 45, and the cross flow. Since the fan switch 36 for turning ON / OFF the control drive of the fan 57 is provided, the input signals of the refrigeration switch 32, the refrigeration switch 34, and the fan switch 36 are transmitted to the control unit 81, and the control unit 81 Then, control based on the input signal is performed.

  A thermistor 69 is connected to the control unit 81. The thermistor 69 is disposed in the storage room 46 (that is, the first storage room 46A and the second storage room 46B), detects the temperature in each storage room 46, and controls the detection result. Transmit to unit 81. Therefore, the control unit 81 performs control such as temperature control in the warming chamber 46 based on the detection result of the thermistor 69.

Further, the control unit 81 is connected with a warm storage control circuit 88 to which the cross flow fan 57 and the heater panel 43 are connected. The warm storage control circuit 88 performs drive control of the cross flow fan 57 and the heater panel 43 in accordance with a command from the CPU 82.
Further, the control unit 81 is connected to a refrigeration control circuit 89 to which the compressor 17, the fan motor 16 and the internal fan 71 are connected. The refrigeration control circuit 89 controls the drive of the compressor 17, the fan motor 16, and the internal fan 71 in accordance with instructions from the CPU 82.

A flow path switching motor 67 is connected to the control unit 81 via a flow path switching mechanism drive circuit 68. The flow path switching mechanism drive circuit 68 controls the drive mode (forward rotation, reverse rotation) of the flow path switching motor 67 based on a command signal from the control unit 81. As described above, since the flow path switching motor 67 is connected to the flow path switching member 63 via the drive transmission mechanism, the flow path switching member 63 is controlled by driving the flow path switching motor 67. It is possible to switch between the first state and the second state.
Here, the command signal transmitted from the control unit 81 to the flow path switching mechanism drive circuit 68 is transmitted based on a flow path switching processing program described later. That is, the flow path switching member 63 can be switched between the first state and the second state by executing a flow path switching processing program described later.

  Next, the flow path switching process program related to the layout vehicle 1 will be described in detail with reference to the drawings. FIG. 7 is a flowchart of the flow path switching processing program according to the present embodiment.

Here, as described above, in the deodorizing filter 60 under normal temperature conditions, the adsorbed and removed odor component is hardly released again into the air. However, under a high temperature condition such as the storage chamber 46 when food is stored, the deodorizing mechanism of the deodorizing filter 60 is difficult to function smoothly and is adsorbed on the surface of the deodorizing filter 60. Re-release of odorous components will occur. Therefore, in the allocation vehicle 1 according to the present embodiment, the odor component from the deodorizing filter 60 is regenerated by switching the flow path switching member 63 between the first state and the second state based on the flow path switching processing program. Prevent release.
Note that the main control processing program related to the distribution vehicle 1 is already known control processing, and thus detailed description thereof is omitted. In the main control processing program, various controls such as temperature control of the refrigerator compartment 45 and the warm compartment 46 are performed.

Here, the flow path switching process program is a program that is executed while interrupting the main control program.
When the execution of the flow path switching process program is started, first, the CPU 82 determines whether or not the fan switch 36 has been operated to ON. When the ON signal is received from the fan switch 36 (S1: YES), the CPU 82 starts driving the cross flow fan 57, and then shifts the process to S2. On the other hand, when an OFF signal is received from the fan switch 36 (S1: NO), the CPU 82 stops driving the cross flow fan 57 (S3), and ends the flow path switching processing program.
Even when the driving of the cross flow fan 57 is already stopped and the fan switch 36 is off, the process of S3 is performed and the flow path switching process program is terminated.

  After shifting to S2, the CPU 82 determines whether or not the warm switch 34 has been turned ON. When the ON signal is received from the warm switch 34 (S2: YES), the CPU 82 shifts the process to S5. On the other hand, when the off signal is received from the warm switch 34 (S2: NO), the CPU 82 shifts the process to S4.

  In S4, the CPU 82 transmits a command signal to the flow path switching mechanism drive circuit 68 to switch the flow path switching member 63 to the first state (see FIG. 4). That is, the drive mode of the flow path switching motor 67 is controlled via the flow path switching mechanism drive circuit 68 based on the command signal. Thereby, the flow path switching member 63 is in the first state in which the hot air opening 65 is closed. At this time, since the warm switch 34 is off (S2: NO), the air in the warm room 46 is not warmed to a high temperature. Then, based on the fan switch 36 being turned on, a circulating flow that circulates in the warm storage chamber 46 is generated.

That is, in S4, as shown in FIG. 4, the air in the warming chamber 46 circulates through the deodorizing filter 60, so that the odor components contained in the air in the warming chamber 46 are removed. can do. Since the warm switch 34 is off, the heater disposed in the heater panel 43 does not generate heat, and the air in the warm chamber 46 is not warmed to a high temperature. Odor components that have been removed by adsorption are not re-released.
That is, by performing the process of S4, the odor component can be removed from the air in the warming chamber 46 by the deodorization filter 60, and the re-release of the odor component from the deodorization filter 60 is prevented. Can do. As a result, the air inside the warm room 46 can be made clean.

On the other hand, when the warm switch 34 is turned on (S2: YES), and the process proceeds to S5, the CPU 82 transmits a command signal to the flow path switching mechanism drive circuit 68 to switch the flow path switching member 63. Switch to the second state (see FIG. 5). That is, the drive mode of the flow path switching motor 67 is controlled via the flow path switching mechanism drive circuit 68 based on the command signal. As a result, the flow path switching member 63 enters the second state in which the deodorizing opening 66 is closed.
At this time, since the warm switch 34 is on (S2: YES), the heater disposed in the heater panel 43 is driven via the warm control circuit 88. That is, the air in the warm room 46 is heated to a high temperature. Since the fan switch 36 is turned on (S1: YES), high-temperature air circulates in the warming chamber 46 based on the driving of the cross flow fan 57.

Here, in S5, since the flow path switching member 63 closes the deodorizing opening 66, the path of the air to the deodorizing filter 60 is blocked, so that the hot air is only in the hot air opening 65. And is guided to the cross flow fan 57. Then, the high-temperature air guided to the cross flow fan 57 is blown out to the duct portion 48 through the warm air outlet 52 based on the driving of the cross flow fan 57.
That is, the air heated to a high temperature does not pass through the deodorizing filter 60 and circulates in the warming chamber 46. As a result, the air warmed to a high temperature by the heater panel 43 circulates in the warming chamber 46, so that the warming chamber 46 can be warmed to a high temperature, and the food in the warming chamber 46 is warmed. It becomes possible.

In this regard, when the high-temperature air in the warming chamber 46 passes through the deodorizing filter 60, the deodorizing filter 60 itself is heated to a high temperature, so that the adsorbed odor components can be re-released.
Here, in the allocation vehicle 1 according to the present embodiment, the flow path switching motor 67 is set to the second state based on the ON operation of the storage switch 34 in which the air in the storage chamber 46 becomes high temperature. Air does not pass through the deodorizing filter 60. That is, since it is possible to prevent the deodorizing filter 60 from reaching a high temperature, it is possible to prevent the odor components removed by adsorption from being re-released from the deodorizing filter 60.

  When the processes of S4 and S5 are completed, the CPU 82 ends the flow path switching process program. In this regard, the CPU 82 executes the flow path switching process program while interrupting the main control process program again after a predetermined period.

  As described above, in the allocation vehicle 1 according to the present embodiment, when the warm switch 34 is turned on by the flow path switching processing program, the flow path switching member 63 is set to the second state, and the warm switch 1 When 34 is turned off, the flow path switching member 63 is set to the first state.

That is, when the warm switch 34 is turned on so that the air in the warm room 46 becomes hot, the deodorizing opening 66 is closed by the flow path switching member 63 and only the warm air opening 65 is closed. The air in the warm room 46 is circulated through. Since the air warmed to a high temperature circulates in the storage room 46, the inside of the storage room 46 can be brought to a high temperature state, and the food stored in the storage room 46 is surely heated. Can be arranged as
Further, since the deodorizing opening 66 is blocked by the flow path switching member 63, the air heated to a high temperature does not pass through the deodorizing filter 60. Therefore, the deodorizing filter 60 does not become high temperature due to the air warmed to a high temperature, and the re-release of the odor components removed by adsorption can be prevented.

On the other hand, when the warming switch 34 is turned off, the heater disposed in the heater panel 43 stops driving, and the temperature of the air in the warming chamber 46 decreases. At this time, since the flow path switching member 63 is in the second state in which the hot air opening 65 is closed, the air in the warm chamber 46 circulates in the warm chamber 46 through a circulation path that passes through the deodorizing filter 60. To do.
Since the air in the warm chamber 46 passes through the deodorizing filter 60, the odor component contained in the air is adsorbed and removed by the deodorizing filter 60. That is, since the odor component of the air in the warm room 46 can be removed, the warm room 46 can be made clean. Moreover, since the heating of the air by the heater panel 43 is stopped based on the turning-off operation of the warm switch 34, the high-temperature air does not pass through the deodorizing filter 60. That is, even if air passes through the deodorizing filter 60, the deodorizing filter 60 itself does not become high temperature, and odor components are not released again.

  As described above, in the distribution vehicle 1 according to the present embodiment, the air warmed by the heater panel 43 is circulated so that the inside of the warm room 46 can be brought into a high temperature state, and the odor component by the deodorizing filter 60 is obtained. Is also possible. Furthermore, by changing the state of the flow path switching member 63 based on the flow path switching processing program, the odor component from the deodorizing filter 60 even when high-temperature air circulates in the warming chamber 46. Can be prevented from being released again.

(Second Embodiment)
Next, a second embodiment that is different from the first embodiment described above will be described. The arrangement vehicle 1 according to the second embodiment has the same basic configuration as the arrangement vehicle according to the first embodiment described above, and only the flow path switching process program is different. Therefore, the flow path switching process program according to the second embodiment will be described in detail with reference to the drawings.
In addition, in the layout vehicle 1 which concerns on 2nd Embodiment, the structure same as the layout vehicle 1 which concerns on the said 1st Embodiment is demonstrated with the same code | symbol. Further, the flow path switching process program shown in FIG. 8 is executed while interrupting the main control program of the layout vehicle 1 as in the first embodiment.

  When the execution of the flow path switching process program is started, the CPU 82 determines whether or not the fan switch 36 has been turned ON (S11). When the ON signal is received from the fan switch 36 (S11: YES), the CPU 82 starts driving the cross flow fan 57, and then proceeds to S12. On the other hand, when an OFF signal is received from the fan switch 36 (S11: NO), the CPU 82 stops driving the cross flow fan 57 (S13) and ends the flow path switching processing program.

  After shifting to S12, the CPU 82 determines whether or not the warm switch 34 has been turned ON. When the ON signal is received from the warm switch 34 (S12: YES), the CPU 82 starts driving the heater panel 43 (S14), and then proceeds to S15. On the other hand, when the off signal is received from the warm switch 34 (S12: NO), the CPU 82 proceeds to S15 as it is.

In S <b> 15, the CPU 82 determines whether or not the temperature in the warm room 46 detected by the thermistor 69 is equal to or higher than a predetermined temperature. Here, the predetermined temperature is a temperature equal to or lower than the lowest temperature at which the adsorbed odor component can be re-released in the deodorizing filter 60 disposed in the distribution vehicle 1.
When the temperature in the warm room 46 is equal to or higher than the predetermined temperature (S15: YES), the CPU 82 shifts the process to S17. On the other hand, when the temperature in the warm room 46 is lower than the predetermined temperature (S15: NO), the CPU 82 shifts the process to S16.

In S <b> 16 where the temperature in the warming chamber 46 is lower than the predetermined temperature (S <b> 15: NO), the CPU 82 transmits a command signal to the flow path switching mechanism drive circuit 68, and the flow path switching member 63. Is switched to the first state (see FIG. 4). As a result, the hot air opening 65 is blocked by the flow path switching member 63, so that the air in the warm chamber 46 is guided to the deodorizing filter 60.
Here, the temperature in the warming chamber 46 is detected by the thermistor 69, and the temperature in the warming chamber 46 is lower than a predetermined temperature at which re-release of the odor component from the deodorizing filter 60 can occur. Since it is judged (S15: NO), even if the air in the warming chamber 46 passes through the deodorizing filter 60, the deodorizing filter 60 itself is not heated to a temperature at which odor components are re-released. Absent. That is, the odor component is not re-released from the deodorizing filter 60, and the odor component contained in the air in the warm storage chamber 46 that has passed can be removed by adsorption. That is, the air after passing through the deodorizing filter 60 contains almost no odor component, and thus the inside of the warm storage chamber 46 can be made clean.

On the other hand, when it is determined that the temperature in the warm room 46 is equal to or higher than the predetermined temperature (S15: YES), the CPU 82 transmits a command signal to the flow path switching mechanism drive circuit 68. Then, the flow path switching member 63 is switched to the second state (see FIG. 5). Thereby, the flow path switching member 63 is changed to the second state in which the deodorizing opening 66 is closed and the hot air opening 65 is opened. Therefore, the air in the warming chamber 46 that has been heated to a predetermined temperature or higher circulates in the warming chamber 46 without passing through the deodorizing filter 60.
Here, the air having a predetermined temperature or higher circulates in the warming chamber 46 without passing through the deodorizing filter 60, so that the deodorizing filter 60 is not heated to a predetermined temperature or higher. That is, even when the inside of the warming chamber 46 is warmed, the odor component is not re-released from the deodorizing filter 60, and the warming chamber 46 can be warmed while maintaining the current clean state. it can.
When the processes of S16 and S17 are completed, the CPU 82 ends the flow path switching process program. In this regard, the CPU 82 executes the flow path switching process program while interrupting the main control process program again after a predetermined period.

As described above, in the allocation vehicle 1 according to the second embodiment, by executing the flow path switching processing program, the inside of the blower unit 21 is changed according to the temperature in the warming chamber 46 detected by the thermistor 69. The flow path switching member 63 can be switched between the first state and the second state.
That is, when the temperature in the storage chamber 46 becomes equal to or higher than the predetermined temperature and the flow path switching member 63 is switched to the second state based on the execution of the flow path switching processing program, as in the first embodiment described above, The air in the warm room 46 does not pass through the deodorizing filter 60 and circulates in the warm room 46 only through the hot air opening 65. That is, since the air heated to a predetermined temperature or higher circulates in the warming chamber 46, the warming chamber 46 can be warmed. As a result, the food stored in the warm room 46 can be surely served as a hot meal.
Further, similarly to the first embodiment, in the second embodiment, when the flow path switching member 63 is in the second state, the deodorizing opening 66 is closed by the flow path switching member 63, so Air heated to a temperature higher than the temperature does not pass through the deodorizing filter 60. That is, when the air heated to a predetermined temperature or more passes, the deodorizing filter 60 does not reach a high temperature, and it is possible to prevent the odor components removed by adsorption and removal.

On the other hand, when the temperature in the warm storage chamber 46 is lower than the predetermined temperature, the flow path switching member 63 is switched to the first state in which the hot air opening 65 is closed by the flow path switching processing program.
In this first state, as shown in FIG. 4, the air in the warming chamber 46 circulates in the warming chamber 46 through a circulation path that passes through the deodorizing filter 60. That is, since the air in the warm chamber 46 passes through the deodorizing filter 60, the odor component contained in the air is adsorbed and removed by the deodorizing filter 60. As a result, the odor component of the air in the warm room 46 can be removed, and the warm room 46 can be made clean.
At this time, since the air passing through the deodorizing filter 60 is air having a temperature lower than the predetermined temperature, the deodorizing filter 60 is not heated above the predetermined temperature. Therefore, even if air passes through the deodorizing filter 60, the deodorizing filter 60 itself does not reach a predetermined temperature, and the odor component is not re-released.

  As described above, in the distribution vehicle 1 according to the second embodiment, by circulating the air heated by the heater panel 43, the inside of the warm room 46 can be brought into a high temperature state, and the odor by the deodorizing filter 60 can be obtained. It is also possible to remove components. Furthermore, by executing the flow path switching processing program and changing the state of the flow path switching member 63 based on the temperature in the warming chamber 46, the odor component from the deodorizing filter 60 is reliably prevented from being released again. be able to.

In addition, this invention is not limited to the said embodiment, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention.
For example, in the above-described embodiment, the description is given with the ration wheel 1 provided with the warm room 46 and the cold room 45, but the present invention is applicable as long as it has a warm function that warms the room by circulating air. Can be applied. That is, the present invention can also be applied to a distribution vehicle having only a warming function (so-called hot wagon).

  Moreover, in the above-mentioned embodiment, although it demonstrated concretely with the movable allocation vehicle 1 which arrange | positioned the free wheel 5 and the fixed wheel 7 on the bottom face, it is not limited to this aspect. That is, it is also possible to apply to a warm storage that is installed at a predetermined position and does not move.

It is a side view of the distribution vehicle which concerns on this embodiment. It is a side view which shows the internal structure and air flow of the layout vehicle which concerns on this embodiment. It is explanatory drawing which shows the internal structure of the machine room of the layout vehicle which concerns on this embodiment. It is explanatory drawing which shows the ventilation unit inside in a 1st state. It is explanatory drawing which shows the inside of the ventilation unit in a 2nd state. It is a block diagram which shows the control system of the layout vehicle which concerns on this embodiment. It is a flowchart of the lock mechanism drive processing program in the allocation vehicle which concerns on 1st Embodiment. It is a flowchart of the lock mechanism drive processing program in the layout vehicle which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheel arrangement 21 Blow unit 34 Warm switch 43 Heater panel 46 Warm room 48 Duct part 51 Warm suction port 52 Warm blower outlet 57 Cross flow fan 60 Deodorizing filter 63 Channel switching member 65 Warm air opening 66 Extinction Odor opening 67 Flow path switching motor 68 Flow path switching mechanism drive circuit 69 Thermistor 82 CPU
83 ROM

Claims (3)

A storage unit capable of storing an object;
Heating means for heating the air in the storage unit;
An air circulating means for circulating the air in the storage section;
A first flow path including a deodorizing filter that removes odorous components present in the air when the air circulated by the air circulation means passes, and a second passage through which the air circulated by the air circulation means passes. A circulation channel comprising a channel,
A channel closing member disposed in the circulation channel and blocking air inflow to either the first channel or the second channel;
A flow path switching means for switching a flow path, in which air flow is blocked by the flow path closing member, to either the first flow path or the second flow path in accordance with the temperature state of the air in the storage section. A warm storage room characterized by that. In the warm warehouse of Claim 1,
The flow path switching means is
When the heating means is driven, the air flow into the first flow path is blocked,
When the heating means is not driven, an inflow of air to the second flow path is blocked. In the warm warehouse of Claim 1,
Comprising temperature measuring means for measuring the temperature of the air in the storage part,
The flow path switching means is
If the measurement result of the temperature measuring means is equal to or greater than a predetermined value, shut off the inflow of air to the first flow path,
When the measurement result of the temperature measuring means is less than a predetermined value, the inflow of air to the second flow path is blocked.

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